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  • Cytometry.Background Chronic rhinosinusitis with or without nasal polyps (CRSwNP/CRSsNP) seriously impairs health-related quality of life (HRQoL). This analysis describes the impact of the exhalation delivery system with fluticasone (EDS-FLU) on HRQoL, assessed by the 36-item Short-Form Health Survey version 2 (SF-36v2), and on utilities, assessed via the Short-Form 6-Dimension (SF-6D), in patients with CRSwNP. Methods Post hoc analysis of pooled randomized clinical trial data (NAVIGATE I and II; N = 643) to examine change from baseline in SF-36v2 and SF-6D at end-of-double-blind (EODB 16 weeks) and end-of-open-label (EOOL 24 weeks; following 8 weeks of open-label treatment) for EDS-FLU vs placebo (EDS-PBO). Baseline characteristics predictive of change in SF-36 and SF-6D scores were assessed. Results Mean baseline SF-36v2 scores were below population norms. At EODB, mean improvement was greater for all SF-36v2 domain and component scores with EDS-FLU (range 2.9 [physical functioning] to 5.11 [bodily pain BP]) vs EDS-PBO (range 0.81 [mental health] to 2.87 [BP]) (each comparison p less then 0.01); physical and mental component score improvements within the EDS-FLU group exceeded the minimal clinically important difference (MCID). Clinically meaningful and statistically significant improvements in SF-6D utility scores were seen in EDS-FLU-treated patients compared to EDS-PBO-treated patients (0.058 vs 0.023, respectively, p less then 0.001). At EOOL, SF-36v2 and SF-6D mean scores were at or above population norms, with clinically meaningful and statistically significant improvements from baseline. Conclusion In this pooled analysis of 2 large pivotal EDS-FLU trials, health domain and health utilities improvements were significantly greater with EDS-FLU than EDS-PBO and were comparable to population norms.The novel coronavirus, now termed SARS-CoV-2, has caused a significant global impact in the space of 4 months. Almost all elective cardiac surgical operations have been postponed with only urgent and emergency operations being considered in order to maximise resource utilisation. We present a case of a 69-year old lady with an infected prosthetic aortic valve for consideration of urgent inpatient surgery. Despite being asymptomatic and testing negative initially for COVID-19 RT-PCR swab, further investigations with CT revealed suspicious findings. She subsequently tested positive on a repeat swab and unfortunately deteriorated rapidly with complications including gastro-intestinal and intracerebral haemorrhage.Schinzel-Giedion syndrome (SGS; OMIM 269150) is an ultra-rare genetic disorder associated with a distinctive facial gestalt, congenital malformations, severe intellectual disability, and a progressive neurological course. The prognosis for SGS is poor, with survival beyond the first decade rare. Germline, de novo heterozygous variants in the SETBP1 gene cause SGS with the pathogenic variants associated with the SGS phenotype missense and confined to exon 4 of the gene, clustered in a four amino acid (12 bp) hotspot in the SKI homologous region of the SETBP1 protein. We report a patient with a de novo I871S variant within the SKI homologous region, which has been associated with the severe phenotype previously; but our patient has fewer features of SGS and a milder course. This is the first report of a forme-fruste phenotype in a patient with a pathogenic variant within the SGS hotspot on the SETBP1 gene and it highlights the importance of considering atypical clinical presentations in the context of severe ultra-rare genetic disorders.Background Circular RNAs (circRNAs) have been demonstrated to act as key regulators in the chemoresistance of human cancers, including breast cancer (**). Here, we aimed to explore the role of circ-RNF111 in paclitaxel (PTX) resistance of **. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) was employed to determine the expression of circ-RNF111, microRNA-140-5p (miR-140-5p) and E2F transcription factor 3 (E2F3) mRNA. The half maximal inhibitory concentration (IC50 ) of PTX, cell viability, colony formation and cell invasion were assessed by cell counting kit-8 (CCK-8) assay, colony formation assay and transwell assay, respectively. https://www.selleckchem.com/products/sonrotoclax.html Glucose consumption and lactate production were determined by specific kits. A murine xenograft model was established to investigate the role of circ-RNF111 in PTX resistance of ** in vivo. Dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were performed to verify the relationship between miR-140-5p and circ-RNF111 or E2F3. Western blot assay was conducted to examine the protein level of E2F3. Results Circ-RNF111 was upregulated in PTX-resistant ** tissues and cells. Circ-RNF111 knockdown restrained IC50 of PTX, cell viability, colony numbers, cell invasion and glycolysis in PTX-resistant ** cells in vitro and enhanced PTX sensitivity in vivo. MiR-140-5p was a target of circ-RNF111 and miR-140-5p expression was negatively correlated with circ-RNF111 expression in ** tissues. The effect of circ-RNF111 knockdown on PTX resistance was rescued by miR-140-5p deletion. Additionally, miR-140-5p could interact with E2F3 and negatively regulate E2F3 expression. Moreover, miR-140-5p suppressed IC50 of PTX, cell viability, colony numbers, cell invasion and glycolysis by targeting E2F3. Conclusions Circ-RNF111 improved PTX resistance of ** by upregulating E2F3 via sponging miR-140-5p.Phenotyping mouse model systems of human disease has proven to be a difficult task, with frequent poor inter- and intra-laboratory replicability, particularly in behavioral domains such as social and cognitive function. However, establishing robust animal model systems with strong construct validity is of fundamental importance as they are central tools for understanding disease pathophysiology and developing therapeutics. To complete our studies of mouse model systems relevant to autism spectrum disorder (ASD), we present a replication of the main findings from our two published studies of five genetic mouse model systems of ASD. To assess the intra-laboratory robustness of previous results, we chose the two model systems that showed the greatest phenotypic differences, the Shank3/F and Cntnap2, and repeated assessments of general health, activity, and social behavior. We additionally explored all five model systems in the same framework, comparing all results obtained in this three-yearlong effort using informatics techniques to assess commonalities and differences.
    Cytometry.Background Chronic rhinosinusitis with or without nasal polyps (CRSwNP/CRSsNP) seriously impairs health-related quality of life (HRQoL). This analysis describes the impact of the exhalation delivery system with fluticasone (EDS-FLU) on HRQoL, assessed by the 36-item Short-Form Health Survey version 2 (SF-36v2), and on utilities, assessed via the Short-Form 6-Dimension (SF-6D), in patients with CRSwNP. Methods Post hoc analysis of pooled randomized clinical trial data (NAVIGATE I and II; N = 643) to examine change from baseline in SF-36v2 and SF-6D at end-of-double-blind (EODB 16 weeks) and end-of-open-label (EOOL 24 weeks; following 8 weeks of open-label treatment) for EDS-FLU vs placebo (EDS-PBO). Baseline characteristics predictive of change in SF-36 and SF-6D scores were assessed. Results Mean baseline SF-36v2 scores were below population norms. At EODB, mean improvement was greater for all SF-36v2 domain and component scores with EDS-FLU (range 2.9 [physical functioning] to 5.11 [bodily pain BP]) vs EDS-PBO (range 0.81 [mental health] to 2.87 [BP]) (each comparison p less then 0.01); physical and mental component score improvements within the EDS-FLU group exceeded the minimal clinically important difference (MCID). Clinically meaningful and statistically significant improvements in SF-6D utility scores were seen in EDS-FLU-treated patients compared to EDS-PBO-treated patients (0.058 vs 0.023, respectively, p less then 0.001). At EOOL, SF-36v2 and SF-6D mean scores were at or above population norms, with clinically meaningful and statistically significant improvements from baseline. Conclusion In this pooled analysis of 2 large pivotal EDS-FLU trials, health domain and health utilities improvements were significantly greater with EDS-FLU than EDS-PBO and were comparable to population norms.The novel coronavirus, now termed SARS-CoV-2, has caused a significant global impact in the space of 4 months. Almost all elective cardiac surgical operations have been postponed with only urgent and emergency operations being considered in order to maximise resource utilisation. We present a case of a 69-year old lady with an infected prosthetic aortic valve for consideration of urgent inpatient surgery. Despite being asymptomatic and testing negative initially for COVID-19 RT-PCR swab, further investigations with CT revealed suspicious findings. She subsequently tested positive on a repeat swab and unfortunately deteriorated rapidly with complications including gastro-intestinal and intracerebral haemorrhage.Schinzel-Giedion syndrome (SGS; OMIM 269150) is an ultra-rare genetic disorder associated with a distinctive facial gestalt, congenital malformations, severe intellectual disability, and a progressive neurological course. The prognosis for SGS is poor, with survival beyond the first decade rare. Germline, de novo heterozygous variants in the SETBP1 gene cause SGS with the pathogenic variants associated with the SGS phenotype missense and confined to exon 4 of the gene, clustered in a four amino acid (12 bp) hotspot in the SKI homologous region of the SETBP1 protein. We report a patient with a de novo I871S variant within the SKI homologous region, which has been associated with the severe phenotype previously; but our patient has fewer features of SGS and a milder course. This is the first report of a forme-fruste phenotype in a patient with a pathogenic variant within the SGS hotspot on the SETBP1 gene and it highlights the importance of considering atypical clinical presentations in the context of severe ultra-rare genetic disorders.Background Circular RNAs (circRNAs) have been demonstrated to act as key regulators in the chemoresistance of human cancers, including breast cancer (BC). Here, we aimed to explore the role of circ-RNF111 in paclitaxel (PTX) resistance of BC. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) was employed to determine the expression of circ-RNF111, microRNA-140-5p (miR-140-5p) and E2F transcription factor 3 (E2F3) mRNA. The half maximal inhibitory concentration (IC50 ) of PTX, cell viability, colony formation and cell invasion were assessed by cell counting kit-8 (CCK-8) assay, colony formation assay and transwell assay, respectively. https://www.selleckchem.com/products/sonrotoclax.html Glucose consumption and lactate production were determined by specific kits. A murine xenograft model was established to investigate the role of circ-RNF111 in PTX resistance of BC in vivo. Dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were performed to verify the relationship between miR-140-5p and circ-RNF111 or E2F3. Western blot assay was conducted to examine the protein level of E2F3. Results Circ-RNF111 was upregulated in PTX-resistant BC tissues and cells. Circ-RNF111 knockdown restrained IC50 of PTX, cell viability, colony numbers, cell invasion and glycolysis in PTX-resistant BC cells in vitro and enhanced PTX sensitivity in vivo. MiR-140-5p was a target of circ-RNF111 and miR-140-5p expression was negatively correlated with circ-RNF111 expression in BC tissues. The effect of circ-RNF111 knockdown on PTX resistance was rescued by miR-140-5p deletion. Additionally, miR-140-5p could interact with E2F3 and negatively regulate E2F3 expression. Moreover, miR-140-5p suppressed IC50 of PTX, cell viability, colony numbers, cell invasion and glycolysis by targeting E2F3. Conclusions Circ-RNF111 improved PTX resistance of BC by upregulating E2F3 via sponging miR-140-5p.Phenotyping mouse model systems of human disease has proven to be a difficult task, with frequent poor inter- and intra-laboratory replicability, particularly in behavioral domains such as social and cognitive function. However, establishing robust animal model systems with strong construct validity is of fundamental importance as they are central tools for understanding disease pathophysiology and developing therapeutics. To complete our studies of mouse model systems relevant to autism spectrum disorder (ASD), we present a replication of the main findings from our two published studies of five genetic mouse model systems of ASD. To assess the intra-laboratory robustness of previous results, we chose the two model systems that showed the greatest phenotypic differences, the Shank3/F and Cntnap2, and repeated assessments of general health, activity, and social behavior. We additionally explored all five model systems in the same framework, comparing all results obtained in this three-yearlong effort using informatics techniques to assess commonalities and differences.
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  • In vivo whole-brain 3D T1ρ maps acquired with tailored VFA scheduling had superior SNR efficiency than is achievable with MAPSS, and the SNR efficiency improved with a greater number of views per segment. CONCLUSIONS Tailored VFA scheduling is an SNR-efficient GRE technique for 3D T1ρ mapping of the brain that provides increased flexibility in choice of imaging parameters compared with MAPSS, which may benefit a variety of applications. © 2020 International Society for Magnetic Resonance in Medicine.With high morbidity and mortality worldwide, injuries to the central nervous system (CNS) usually result in devastating consequences. However, the underlying mechanisms have not been fully understood and current therapies are still limited. Circular RNA (circRNA) is a novel type of endogenous noncoding RNAs, characterized by covalently closed annular structure. It is gradually recognized that circRNAs are involved in multiple biological processes, such as acting as microRNA sponges or scaffolds during the assembly of protein complex and modulating the transcription of certain genes. Interestingly, circRNAs have been found to be highly expressed in the CNS, which indicates their neurospecificity. Several circRNAs have already been discovered to be associated with multiple pathophysiological processes following neurological diseases. Currently, the molecular roles of circRNAs in CNS injuries have gained increasing attention, leading to uninterrupted relevant researches. Herein, we presented a review of current studies on the role of circRNAs in CNS injuries. The therapeutic potency of circRNAs in CNS injuries was also analyzed. © 2020 Wiley Periodicals, Inc.NEW FINDINGS What is the central question of this study? Using human adductor pollicis muscle, we studied how contraction-induced reductions in twitch duration, without changes in twitch force, affects summation of twitch pairs into higher force contractions. What is the main finding and its importance? Abbreviating twitch duration with a brief contraction resulted in enhanced summation of fully fused twitch pairs, but impaired summation in partially-fused twitch pairs even after accounting for the differences in relaxation of the first twitch. An inherent mechanism which enhances relaxation without sacrificing force generation in forceful contractions would benefit cyclic muscle activities, such as locomotion. ABSTRACT During electrically-evoked contractions of skeletal muscle, the interplay between twitch duration and the time between electrical stimuli (inter-pulse interval, IPI) determines how effectively twitch forces summate into high force contractions. https://www.selleckchem.com/products/hrs-4642.html A brief muscle contraction can impair summation bPost at IPIs of 50-83 ms or 500-5000 ms. Intriguingly, summation effectiveness was higher at Post than at Pre at IPIs of 10-25 ms. In summary, a brief contraction has complex effects on the relationship between inter-pulse interval and summation effectiveness. Future experiments are needed to reveal the mechanisms behind this novel observation. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.PURPOSE The thalamus is an important brain structure and neurosurgical target, but its constituting nuclei are challenging to image non-invasively. Recently, susceptibility-weighted imaging (SWI) at ultra-high field has shown promising capabilities for thalamic nuclei mapping. In this work, several methodological improvements were explored to enhance SWI quality and contrast, and specifically its ability for thalamic imaging. METHODS High-resolution SWI was performed at 7T in healthy participants, and the following techniques were applied (a) monitoring and retrospective correction of head motion and B0 perturbations using integrated MR navigators, (b) segmentation and removal of venous vessels on the SWI data using vessel enhancement filtering, and (c) contrast enhancement by tuning the parameters of the SWI phase-magnitude combination. The resulting improvements were evaluated with quantitative metrics of image quality, and by comparison to anatomo-histological thalamic atlases. RESULTS Even with sub-millimeter motion and natural breathing, motion and field correction produced clear improvements in both magnitude and phase data quality (76% and 41%, respectively). The improvements were stronger in cases of larger motion/field deviations, mitigating the dependence of image quality on subject performance. Optimizing the SWI phase-magnitude combination yielded substantial improvements in image contrast, particularly in the thalamus, well beyond previously reported SWI results. The atlas comparisons provided compelling evidence of anatomical correspondence between SWI features and several thalamic nuclei, for example, the ventral intermediate nucleus. Vein detection performed favorably inside the thalamus, and vein removal further improved visualization. CONCLUSION Altogether, the proposed developments substantially improve high-resolution SWI, particularly for thalamic nuclei imaging. © 2020 International Society for Magnetic Resonance in Medicine.PURPOSE Subjective quality assessment of displayed magnetic resonance (MR) images plays a key role in diagnosis and the resultant treatment. Therefore, this study aims to introduce a new no-reference (NR) image quality assessment (IQA) method for the objective, automatic evaluation of MR images and compare its judgments with those of similar techniques. METHODS A novel NR-IQA method was developed. The method uses a sequence of scaled images filtered to enhance high-frequency components and preserve low-frequency parts. Since the human visual system (HVS) is sensitive to local image variations and local features often mimic the attraction of the HVS to high-frequency image regions, they were detected in the filtered images and described. Then, the statistics of obtained descriptors were used to build a quality model via the Support Vector Regression method. RESULTS The method was compared with 21 state-of-the-art techniques for NR-IQA on a new dataset of 70 distorted MR images assessed by 31 experienced radiologists, using typical evaluation criteria for the comparison of NR measures.
    In vivo whole-brain 3D T1ρ maps acquired with tailored VFA scheduling had superior SNR efficiency than is achievable with MAPSS, and the SNR efficiency improved with a greater number of views per segment. CONCLUSIONS Tailored VFA scheduling is an SNR-efficient GRE technique for 3D T1ρ mapping of the brain that provides increased flexibility in choice of imaging parameters compared with MAPSS, which may benefit a variety of applications. © 2020 International Society for Magnetic Resonance in Medicine.With high morbidity and mortality worldwide, injuries to the central nervous system (CNS) usually result in devastating consequences. However, the underlying mechanisms have not been fully understood and current therapies are still limited. Circular RNA (circRNA) is a novel type of endogenous noncoding RNAs, characterized by covalently closed annular structure. It is gradually recognized that circRNAs are involved in multiple biological processes, such as acting as microRNA sponges or scaffolds during the assembly of protein complex and modulating the transcription of certain genes. Interestingly, circRNAs have been found to be highly expressed in the CNS, which indicates their neurospecificity. Several circRNAs have already been discovered to be associated with multiple pathophysiological processes following neurological diseases. Currently, the molecular roles of circRNAs in CNS injuries have gained increasing attention, leading to uninterrupted relevant researches. Herein, we presented a review of current studies on the role of circRNAs in CNS injuries. The therapeutic potency of circRNAs in CNS injuries was also analyzed. © 2020 Wiley Periodicals, Inc.NEW FINDINGS What is the central question of this study? Using human adductor pollicis muscle, we studied how contraction-induced reductions in twitch duration, without changes in twitch force, affects summation of twitch pairs into higher force contractions. What is the main finding and its importance? Abbreviating twitch duration with a brief contraction resulted in enhanced summation of fully fused twitch pairs, but impaired summation in partially-fused twitch pairs even after accounting for the differences in relaxation of the first twitch. An inherent mechanism which enhances relaxation without sacrificing force generation in forceful contractions would benefit cyclic muscle activities, such as locomotion. ABSTRACT During electrically-evoked contractions of skeletal muscle, the interplay between twitch duration and the time between electrical stimuli (inter-pulse interval, IPI) determines how effectively twitch forces summate into high force contractions. https://www.selleckchem.com/products/hrs-4642.html A brief muscle contraction can impair summation bPost at IPIs of 50-83 ms or 500-5000 ms. Intriguingly, summation effectiveness was higher at Post than at Pre at IPIs of 10-25 ms. In summary, a brief contraction has complex effects on the relationship between inter-pulse interval and summation effectiveness. Future experiments are needed to reveal the mechanisms behind this novel observation. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.PURPOSE The thalamus is an important brain structure and neurosurgical target, but its constituting nuclei are challenging to image non-invasively. Recently, susceptibility-weighted imaging (SWI) at ultra-high field has shown promising capabilities for thalamic nuclei mapping. In this work, several methodological improvements were explored to enhance SWI quality and contrast, and specifically its ability for thalamic imaging. METHODS High-resolution SWI was performed at 7T in healthy participants, and the following techniques were applied (a) monitoring and retrospective correction of head motion and B0 perturbations using integrated MR navigators, (b) segmentation and removal of venous vessels on the SWI data using vessel enhancement filtering, and (c) contrast enhancement by tuning the parameters of the SWI phase-magnitude combination. The resulting improvements were evaluated with quantitative metrics of image quality, and by comparison to anatomo-histological thalamic atlases. RESULTS Even with sub-millimeter motion and natural breathing, motion and field correction produced clear improvements in both magnitude and phase data quality (76% and 41%, respectively). The improvements were stronger in cases of larger motion/field deviations, mitigating the dependence of image quality on subject performance. Optimizing the SWI phase-magnitude combination yielded substantial improvements in image contrast, particularly in the thalamus, well beyond previously reported SWI results. The atlas comparisons provided compelling evidence of anatomical correspondence between SWI features and several thalamic nuclei, for example, the ventral intermediate nucleus. Vein detection performed favorably inside the thalamus, and vein removal further improved visualization. CONCLUSION Altogether, the proposed developments substantially improve high-resolution SWI, particularly for thalamic nuclei imaging. © 2020 International Society for Magnetic Resonance in Medicine.PURPOSE Subjective quality assessment of displayed magnetic resonance (MR) images plays a key role in diagnosis and the resultant treatment. Therefore, this study aims to introduce a new no-reference (NR) image quality assessment (IQA) method for the objective, automatic evaluation of MR images and compare its judgments with those of similar techniques. METHODS A novel NR-IQA method was developed. The method uses a sequence of scaled images filtered to enhance high-frequency components and preserve low-frequency parts. Since the human visual system (HVS) is sensitive to local image variations and local features often mimic the attraction of the HVS to high-frequency image regions, they were detected in the filtered images and described. Then, the statistics of obtained descriptors were used to build a quality model via the Support Vector Regression method. RESULTS The method was compared with 21 state-of-the-art techniques for NR-IQA on a new dataset of 70 distorted MR images assessed by 31 experienced radiologists, using typical evaluation criteria for the comparison of NR measures.
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  • 559 and 0.789, respectively. Adjustment for independent prognostic factors yielded partial correlation coefficients which were 0.433 and 0.697, respectively. Furthermore, OS was found to be associated with TTUP (P = 0.003; hazard ratio 0.253; 95% confidence interval 0.10-0.63) but not with TTP. Conclusion Untreatable progression is more representative of clinical progression in patients with HCC who underwent TACE. In the current study, TTUP is a more appropriate surrogate endpoint for OS than TTP. Future studies should explore whether untreatable progression is a valuable endpoint event in clinical trials or an indicator of the need for second-line therapy.Objective To compare the overall survival (OS), disease-free survival (DFS) and liver-cancer-specific survival (LCSS) of elderly (≥65 years) and younger patients ( less then 65 years) with early-stage hepatocellular carcinoma (HCC) using ultrasound-guided percutaneous microwave ablation (US-PMMA). Materials and methods From January 2002 to December 2017, 510 elderly and 1053 younger patients were diagnosed with early-stage HCC according to the Milan criteria. All of these patients were treatment-naïve to US-PMMA. Baseline characteristics were collected to identify any risk factors to determine the survival outcomes. OS, DFS, and LCSS probabilities were calculated with the Kaplan-Meier method and compared using the Log-rank test. Results Complete ablation was achieved in all patients. Elderly patients were more likely to be, hepatitis C virus infection, comorbidities, cirrhosis, larger tumors, poor liver functional reservation, more ablation points, longer ablation time, longer hospital stays, and higher hospitalization costs (P less then 0.05). Over the follow-up period (12-156 months), no significant differences were detected in OS, DFS, and LCSS between the two groups ( P = 0.092, 0.318, and 0.183). r-GT, ALB and ablation session were significant factors for OS, r-GT and ALB for LCSS, and cirrhosis, tumor number, AFP and ablation points for RFS in the multivariate analysis, respectively. No treatment-related deaths occurred in the two groups. Any complications were treated as appropriate. Conclusions Although advanced age and comorbidities are intrinsic factors in elderly HCC patients, similar survival outcomes were obtained in elderly and younger HCC patients treated by US-PMWA, despite elderly patients having more comorbidities.Aim Self.expandable metallic stent (SEMS) placement has been considered as the preferred treatment to relieve jaundice in nonsurgical patients. However, 50% of stents become stenosed within 3.6 months due to tumor ingrowth and epithelial hyperplasia. This study aims to evaluate the feasibility and efficacy of a newly designed brachytherapy biliary drainage catheter (BBDC) loaded with 125I seeds for palliation of malignant biliary obstruction (MBO). Methods In this prospective study, patients with unresectable MBO underwent BBDC placement after SEMS placement at our center from September 2017 to April 2019. Results A total of 21 patients with MBO were enrolled. The technical and clinical success rates were 100%. Total bilirubin, direct bilirubin, alanine aminotransferase, alkaline phosphatase, cancer antigen 19.9, and carcinoembryonic antigen levels significantly decreased during the 1.month follow.up (P less then 0.05). Four patients (19%) had minor complications. During the median follow.up of 299 days, 13 patients (61.9%) developed stent occlusion. The 6.month stent patency and survival rates were 73.5% and 79.2%, respectively. The median stent patency and survival were 279 and 454 days, respectively. Conclusion The use of BBDC loaded with 125I seeds is a feasible and effective method to prolong biliary stent patency in patients with MBO.Context The safety and efficacy of irreversible electroporation (IRE) for locally advanced pancreatic carcinoma (LAPC) are well established. However, whether adjuvant chemoradiotherapy after IRE increases, the survival rate remains unknown. Therefore, this study evaluated the effect of chemoradiotherapy combined with IRE in patients with LAPC. Subjects and methods We retrospectively analyzed 42 patients with LAPC between July 2015 and December 2016 at PLA General Hospital treated with IRE or IRE combined with radiation and/or chemotherapy. These patients were divided into the IRE group and the combined-therapy group. All patients underwent computed tomography (CT), magnetic resonance imaging, and positron-emission tomography-CT and no signs of metastases were found. The prognosis of these patients was observed. Results The times after operation and after diagnosis in the combined-therapy group (304.20 ± 118.54) and (334.40 ± 114.07) days, respectively, were better those than in the IRE group (214.36 ± 95.68) and (244.68 ± 110.61) days, respectively. Moreover, patients in the combined-therapy group had a significantly better survival rate than the IRE group (80 vs. 45.45%, P less then 0.05). Conclusions IRE combined with radiotherapy or chemotherapy was superior to IRE alone for the treatment of LAPC, as it prolonged the survival time and improved the survival rate, making it worthy of wide dissemination and clinical application.Purpose To study the arterial distribution of embosphere microsphere (EM) and polyvinyl alcohol (PVA) particles in rabbit mesenteric artery using in vivo microscopy.To study the arterial distribution of embosphere microsphere (EM) and polyvinyl alcohol (PVA) particles in rabbit mesenteric artery using in vivo microscopy. Methods Sixteen New Zealand rabbits were divided into four groups, namely large PVA (560-710 μm), small PVA (150-350 μm), large EM (500-700 μm), and small EM (100-300 μm). The mesenteric arteries of the experimental animals were embolized under fluoroscopic guidance and visualized using in vivo microscopy. The embolized vessel diameter and arterial distribution of embolic agents were compared. Results The diameters of occluded vessels in large PVA, small PVA, large EM, and small EM groups were 430.60 ± 67.30, 200.95 ± 70.54, 387.79 ± 92.51, and 143.81 ± 39.65 μm, respectively. https://www.selleckchem.com/products/neo2734.html PVA occluded significantly larger vessels than EM when the particle size was similar (P less then 0.001). The proportion of EM at the bifurcation of the artery was significantly higher than that of PVA particles (large PVA less then large EM, χ2 = 4.
    559 and 0.789, respectively. Adjustment for independent prognostic factors yielded partial correlation coefficients which were 0.433 and 0.697, respectively. Furthermore, OS was found to be associated with TTUP (P = 0.003; hazard ratio 0.253; 95% confidence interval 0.10-0.63) but not with TTP. Conclusion Untreatable progression is more representative of clinical progression in patients with HCC who underwent TACE. In the current study, TTUP is a more appropriate surrogate endpoint for OS than TTP. Future studies should explore whether untreatable progression is a valuable endpoint event in clinical trials or an indicator of the need for second-line therapy.Objective To compare the overall survival (OS), disease-free survival (DFS) and liver-cancer-specific survival (LCSS) of elderly (≥65 years) and younger patients ( less then 65 years) with early-stage hepatocellular carcinoma (HCC) using ultrasound-guided percutaneous microwave ablation (US-PMMA). Materials and methods From January 2002 to December 2017, 510 elderly and 1053 younger patients were diagnosed with early-stage HCC according to the Milan criteria. All of these patients were treatment-naïve to US-PMMA. Baseline characteristics were collected to identify any risk factors to determine the survival outcomes. OS, DFS, and LCSS probabilities were calculated with the Kaplan-Meier method and compared using the Log-rank test. Results Complete ablation was achieved in all patients. Elderly patients were more likely to be, hepatitis C virus infection, comorbidities, cirrhosis, larger tumors, poor liver functional reservation, more ablation points, longer ablation time, longer hospital stays, and higher hospitalization costs (P less then 0.05). Over the follow-up period (12-156 months), no significant differences were detected in OS, DFS, and LCSS between the two groups ( P = 0.092, 0.318, and 0.183). r-GT, ALB and ablation session were significant factors for OS, r-GT and ALB for LCSS, and cirrhosis, tumor number, AFP and ablation points for RFS in the multivariate analysis, respectively. No treatment-related deaths occurred in the two groups. Any complications were treated as appropriate. Conclusions Although advanced age and comorbidities are intrinsic factors in elderly HCC patients, similar survival outcomes were obtained in elderly and younger HCC patients treated by US-PMWA, despite elderly patients having more comorbidities.Aim Self.expandable metallic stent (SEMS) placement has been considered as the preferred treatment to relieve jaundice in nonsurgical patients. However, 50% of stents become stenosed within 3.6 months due to tumor ingrowth and epithelial hyperplasia. This study aims to evaluate the feasibility and efficacy of a newly designed brachytherapy biliary drainage catheter (BBDC) loaded with 125I seeds for palliation of malignant biliary obstruction (MBO). Methods In this prospective study, patients with unresectable MBO underwent BBDC placement after SEMS placement at our center from September 2017 to April 2019. Results A total of 21 patients with MBO were enrolled. The technical and clinical success rates were 100%. Total bilirubin, direct bilirubin, alanine aminotransferase, alkaline phosphatase, cancer antigen 19.9, and carcinoembryonic antigen levels significantly decreased during the 1.month follow.up (P less then 0.05). Four patients (19%) had minor complications. During the median follow.up of 299 days, 13 patients (61.9%) developed stent occlusion. The 6.month stent patency and survival rates were 73.5% and 79.2%, respectively. The median stent patency and survival were 279 and 454 days, respectively. Conclusion The use of BBDC loaded with 125I seeds is a feasible and effective method to prolong biliary stent patency in patients with MBO.Context The safety and efficacy of irreversible electroporation (IRE) for locally advanced pancreatic carcinoma (LAPC) are well established. However, whether adjuvant chemoradiotherapy after IRE increases, the survival rate remains unknown. Therefore, this study evaluated the effect of chemoradiotherapy combined with IRE in patients with LAPC. Subjects and methods We retrospectively analyzed 42 patients with LAPC between July 2015 and December 2016 at PLA General Hospital treated with IRE or IRE combined with radiation and/or chemotherapy. These patients were divided into the IRE group and the combined-therapy group. All patients underwent computed tomography (CT), magnetic resonance imaging, and positron-emission tomography-CT and no signs of metastases were found. The prognosis of these patients was observed. Results The times after operation and after diagnosis in the combined-therapy group (304.20 ± 118.54) and (334.40 ± 114.07) days, respectively, were better those than in the IRE group (214.36 ± 95.68) and (244.68 ± 110.61) days, respectively. Moreover, patients in the combined-therapy group had a significantly better survival rate than the IRE group (80 vs. 45.45%, P less then 0.05). Conclusions IRE combined with radiotherapy or chemotherapy was superior to IRE alone for the treatment of LAPC, as it prolonged the survival time and improved the survival rate, making it worthy of wide dissemination and clinical application.Purpose To study the arterial distribution of embosphere microsphere (EM) and polyvinyl alcohol (PVA) particles in rabbit mesenteric artery using in vivo microscopy.To study the arterial distribution of embosphere microsphere (EM) and polyvinyl alcohol (PVA) particles in rabbit mesenteric artery using in vivo microscopy. Methods Sixteen New Zealand rabbits were divided into four groups, namely large PVA (560-710 μm), small PVA (150-350 μm), large EM (500-700 μm), and small EM (100-300 μm). The mesenteric arteries of the experimental animals were embolized under fluoroscopic guidance and visualized using in vivo microscopy. The embolized vessel diameter and arterial distribution of embolic agents were compared. Results The diameters of occluded vessels in large PVA, small PVA, large EM, and small EM groups were 430.60 ± 67.30, 200.95 ± 70.54, 387.79 ± 92.51, and 143.81 ± 39.65 μm, respectively. https://www.selleckchem.com/products/neo2734.html PVA occluded significantly larger vessels than EM when the particle size was similar (P less then 0.001). The proportion of EM at the bifurcation of the artery was significantly higher than that of PVA particles (large PVA less then large EM, χ2 = 4.
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  • Results A total of 19 English language studies were eligible for inclusion. Of the 19 studies that assessed musculoskeletal pain, 9 reported statistically significant reductions following digital intervention. In all, 16 studies investigated functional disability; 10 studies showed a statistically significant improvement. Significant improvements were also found in a range of additional outcomes. Due to the heterogeneity of the results, a meta-analysis was not feasible. Conclusions This review has demonstrated that digital health interventions have some clinical benefits in the management of musculoskeletal conditions for pain and functional disability. Digital health interventions have the potential to contribute positively toward reducing the multifaceted burden of musculoskeletal conditions to the individual, economy, and society. Trial registration PROSPERO CRD42018093343; https//www.crd.york.ac.uk/prospero/display_record.php?RecordID=93343.Background Primary care is a major access point for the initial treatment of depression, but the management of these patients is far from optimal. The lack of time in primary care is one of the major difficulties for the delivery of evidence-based psychotherapy. During the last decade, research has focused on the development of brief psychotherapy and cost-effective internet-based interventions mostly based on cognitive behavioral therapy (CBT). Very little research has focused on alternative methods of treatment for depression using CBT. Thus, there is a need for research into other therapeutic approaches. Objective This study aimed to assess the effectiveness of 3 low-intensity, internet-based psychological interventions (healthy lifestyle psychoeducational program [HLP], focused program on positive affect promotion [PAPP], and brief intervention based on mindfulness [MP]) compared with a control condition (improved treatment as usual [iTAU]). Methods A multicenter, 4-arm, parallel randomized controlled triegistry ISRCTN82388279; http//www.isrctn.com/ISRCTN82388279. International registered report identifier (irrid) RR2-10.1186/s12888-015-0475-0.Background The use of digital technologies is increasing in health care. However, studies evaluating digital health technologies can be characterized by selective nonparticipation of older people, although older people represent one of the main user groups of health care. Objective We examined whether and how participation in an exergame intervention study was associated with age, gender, and heart failure (HF) symptom severity. Methods A subset of data from the HF-Wii study was used. The data came from patients with HF in institutional settings in Germany, Italy, the Netherlands, and Sweden. Selective nonparticipation was examined as resulting from two processes (non)recruitment and self-selection. Baseline information on age, gender, and New York Heart Association Functional Classification of 1632 patients with HF were the predictor variables. These patients were screened for HF-Wii study participation. Reasons for nonparticipation were evaluated. Results Of the 1632 screened patients, 71% did not participate. The nonrecruitment rate was 21%, and based on the eligible sample, the refusal rate was 61%. Higher age was associated with lower probability of participation; it increased both the probabilities of not being recruited and declining to participate. More severe symptoms increased the likelihood of nonrecruitment. Gender had no effect. The most common reasons for nonrecruitment and self-selection were related to physical limitations and lack of time, respectively. Conclusions Results indicate that selective nonparticipation takes place in digital health research and that it is associated with age and symptom severity. Gender effects cannot be proven. Such systematic selection can lead to biased research results that inappropriately inform research, policy, and practice. Trial registration ClinicalTrial.gov NCT01785121, https//clinicaltrials.gov/ct2/show/NCT01785121.Background Facebook's advertising platform reaches most US households and has been used for health-related research recruitment. The platform allows for advertising segmentation by age, gender, and location; however, it does not explicitly allow for targeting by race or ethnicity to facilitate a diverse participant pool. Objective This study looked at the efficacy of zip code targeting in Facebook advertising to reach blacks/African Americans and Hispanics/Latinos who smoke daily for a quit-smoking web-based social media study. Methods We ran a general market campaign for 61 weeks using all continental US zip codes as a baseline. Concurrently, we ran 2 campaigns to reach black/African American and Hispanic-/Latino-identified adults, targeting zip codes ranked first by the percentage of households of the racial or ethnic group of interest and then by cigarette expenditure per household. We also ran a Spanish language campaign for 13 weeks, targeting all continental US zip codes but utilizing Facebook's Spanishtrials.gov/ct2/show/NCT02823028.Background Advances in technology engender the investigation of technological solutions to opioid use disorder (OUD). However, in comparison to chronic disease management, the application of mobile health (mHealth) to OUD has been limited. https://www.selleckchem.com/products/tradipitant.html Objective The overarching aim of our research was to design OUD management technologies that utilize wearable sensors to provide continuous monitoring capabilities. The objectives of this study were to (1) document the currently available opioid-related mHealth apps, (2) review past and existing technology solutions that address OUD, and (3) discuss opportunities for technological withdrawal management solutions. Methods We used a two-phase parallel search approach (1) an app search to determine the availability of opioid-related mHealth apps and (2) a scoping review of relevant literature to identify relevant technologies and mHealth apps used to address OUD. Results The app search revealed a steady rise in app development, with most apps being clinician-facing. Most of the apps were designed to aid in opioid dose conversion. Despite the availability of these apps, the scoping review found no study that investigated the efficacy of mHealth apps to address OUD. Conclusions Our findings highlight a general gap in technological solutions of OUD management and the potential for mHealth apps and wearable sensors to address OUD.
    Results A total of 19 English language studies were eligible for inclusion. Of the 19 studies that assessed musculoskeletal pain, 9 reported statistically significant reductions following digital intervention. In all, 16 studies investigated functional disability; 10 studies showed a statistically significant improvement. Significant improvements were also found in a range of additional outcomes. Due to the heterogeneity of the results, a meta-analysis was not feasible. Conclusions This review has demonstrated that digital health interventions have some clinical benefits in the management of musculoskeletal conditions for pain and functional disability. Digital health interventions have the potential to contribute positively toward reducing the multifaceted burden of musculoskeletal conditions to the individual, economy, and society. Trial registration PROSPERO CRD42018093343; https//www.crd.york.ac.uk/prospero/display_record.php?RecordID=93343.Background Primary care is a major access point for the initial treatment of depression, but the management of these patients is far from optimal. The lack of time in primary care is one of the major difficulties for the delivery of evidence-based psychotherapy. During the last decade, research has focused on the development of brief psychotherapy and cost-effective internet-based interventions mostly based on cognitive behavioral therapy (CBT). Very little research has focused on alternative methods of treatment for depression using CBT. Thus, there is a need for research into other therapeutic approaches. Objective This study aimed to assess the effectiveness of 3 low-intensity, internet-based psychological interventions (healthy lifestyle psychoeducational program [HLP], focused program on positive affect promotion [PAPP], and brief intervention based on mindfulness [MP]) compared with a control condition (improved treatment as usual [iTAU]). Methods A multicenter, 4-arm, parallel randomized controlled triegistry ISRCTN82388279; http//www.isrctn.com/ISRCTN82388279. International registered report identifier (irrid) RR2-10.1186/s12888-015-0475-0.Background The use of digital technologies is increasing in health care. However, studies evaluating digital health technologies can be characterized by selective nonparticipation of older people, although older people represent one of the main user groups of health care. Objective We examined whether and how participation in an exergame intervention study was associated with age, gender, and heart failure (HF) symptom severity. Methods A subset of data from the HF-Wii study was used. The data came from patients with HF in institutional settings in Germany, Italy, the Netherlands, and Sweden. Selective nonparticipation was examined as resulting from two processes (non)recruitment and self-selection. Baseline information on age, gender, and New York Heart Association Functional Classification of 1632 patients with HF were the predictor variables. These patients were screened for HF-Wii study participation. Reasons for nonparticipation were evaluated. Results Of the 1632 screened patients, 71% did not participate. The nonrecruitment rate was 21%, and based on the eligible sample, the refusal rate was 61%. Higher age was associated with lower probability of participation; it increased both the probabilities of not being recruited and declining to participate. More severe symptoms increased the likelihood of nonrecruitment. Gender had no effect. The most common reasons for nonrecruitment and self-selection were related to physical limitations and lack of time, respectively. Conclusions Results indicate that selective nonparticipation takes place in digital health research and that it is associated with age and symptom severity. Gender effects cannot be proven. Such systematic selection can lead to biased research results that inappropriately inform research, policy, and practice. Trial registration ClinicalTrial.gov NCT01785121, https//clinicaltrials.gov/ct2/show/NCT01785121.Background Facebook's advertising platform reaches most US households and has been used for health-related research recruitment. The platform allows for advertising segmentation by age, gender, and location; however, it does not explicitly allow for targeting by race or ethnicity to facilitate a diverse participant pool. Objective This study looked at the efficacy of zip code targeting in Facebook advertising to reach blacks/African Americans and Hispanics/Latinos who smoke daily for a quit-smoking web-based social media study. Methods We ran a general market campaign for 61 weeks using all continental US zip codes as a baseline. Concurrently, we ran 2 campaigns to reach black/African American and Hispanic-/Latino-identified adults, targeting zip codes ranked first by the percentage of households of the racial or ethnic group of interest and then by cigarette expenditure per household. We also ran a Spanish language campaign for 13 weeks, targeting all continental US zip codes but utilizing Facebook's Spanishtrials.gov/ct2/show/NCT02823028.Background Advances in technology engender the investigation of technological solutions to opioid use disorder (OUD). However, in comparison to chronic disease management, the application of mobile health (mHealth) to OUD has been limited. https://www.selleckchem.com/products/tradipitant.html Objective The overarching aim of our research was to design OUD management technologies that utilize wearable sensors to provide continuous monitoring capabilities. The objectives of this study were to (1) document the currently available opioid-related mHealth apps, (2) review past and existing technology solutions that address OUD, and (3) discuss opportunities for technological withdrawal management solutions. Methods We used a two-phase parallel search approach (1) an app search to determine the availability of opioid-related mHealth apps and (2) a scoping review of relevant literature to identify relevant technologies and mHealth apps used to address OUD. Results The app search revealed a steady rise in app development, with most apps being clinician-facing. Most of the apps were designed to aid in opioid dose conversion. Despite the availability of these apps, the scoping review found no study that investigated the efficacy of mHealth apps to address OUD. Conclusions Our findings highlight a general gap in technological solutions of OUD management and the potential for mHealth apps and wearable sensors to address OUD.
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  • Multiview learning has received substantial attention over the past decade due to its powerful capacity in integrating various types of information. Conventional unsupervised multiview dimension reduction (UMDR) methods are usually conducted in an offline manner and may fail in many real-world applications, where data arrive sequentially and the data distribution changes periodically. Moreover, satisfying the requirements of high memory consumption and expensive retraining of the time cost in large-scale scenarios are difficult. To remedy these drawbacks, we propose an online UMDR (OUMDR) framework. OUMDR aims to seek a low-dimensional and informative consensus representation for streaming multiview data. View-specific weights are also learned in this article to reflect the contributions of different views to the final consensus presentation. A specific model called OUMDR-E is developed by introducing the exclusive group LASSO (EG-LASSO) to explore the intraview and interview correlations. Then, we develop an efficient iterative algorithm with limited memory and time cost requirements for optimization, where the convergence of each update is theoretically guaranteed. We evaluate the proposed approach in video-based expression recognition applications. The experimental results demonstrate the superiority of our approach in terms of both effectiveness and efficiency.This article is to tackle the event-based state-feedback control problem for interval type-2 (IT2) fuzzy systems subject to the fading channel. For saving communication resources, a dynamic event-triggered (ET) mechanism is utilized to decide the data transmission from sensors to the controller. A time-varying random process is employed to characterize the fading phenomenon in the unpredictable communication network. By considering the effect of channel fading, a nonparallel distribution compensation (non-PDC) IT2 fuzzy controller is synthesized and its number of rules and membership functions (MFs) can be freely selected. As a consequence, the closed-loop fuzzy system possesses imperfectly matched MFs. By taking the global membership boundary information into stability analysis, the membership-function-dependent analysis method is employed to handle these imperfectly matched MFs and to obtain relaxed criteria. Besides, sufficient criteria are obtained so that the resulting closed-loop IT2 fuzzy system can achieve stochastic stability despite fading measurements. The effectiveness of the proposed method is illustrated by a mass-spring-damper system and a numerical example.Link weight prediction is an important subject in network science and machine learning. Its applications to social network analysis, network modeling, and bioinformatics are ubiquitous. Although this subject has attracted considerable attention recently, the performance and interpretability of existing prediction models have not been well balanced. This article focuses on an unsupervised mixed strategy for link weight prediction. Here, the target attribute is the link weight, which represents the correlation or strength of the interaction between a pair of nodes. The input of the model is the weighted adjacency matrix without any preprocessing, as widely adopted in the existing models. Extensive observations on a large number of networks show that the new scheme is competitive to the state-of-the-art algorithms concerning both root-mean-square error and Pearson correlation coefficient metrics. Analytic and simulation results suggest that combining the weight consistency of the network and the link weight-associated latent factors of the nodes is a very effective way to solve the link weight prediction problem.Unsupervised domain adaptation (DA) aims to perform classification tasks on the target domain by leveraging rich labeled data in the existing source domain. The key insight of DA is to reduce domain divergence by learning domain-invariant features or transferable instances. Despite its rapid development, there still exist several challenges to explore. At the feature level, aligning both domains only in a single way (i.e., geometrical or statistical) has limited ability to reduce the domain divergence. https://www.selleckchem.com/products/incb28060.html At the instance level, interfering instances often obstruct learning a discriminant subspace when performing the geometrical alignment. At the classifier level, only minimizing the empirical risk on the source domain may result in a negative transfer. To tackle these challenges, this article proposes a novel DA method, called discriminant geometrical and statistical alignment (DGSA). DGSA first aligns the geometrical structure of both domains by projecting original space into a Grassmann manifold, then matches the statistical distributions of both domains by minimizing their maximum mean discrepancy on the manifold. In the former step, DGSA only selects the density peaks to learn the Grassmann manifold and so to reduce the influences of interfering instances. In addition, DGSA exploits the high-confidence soft labels of target landmarks to learn a more discriminant manifold. In the latter step, a structural risk minimization (SRM) classifier is learned to match the distributions (both marginal and conditional) and predict the target labels at the same time. Extensive experiments on objection recognition and human activity recognition tasks demonstrate that DGSA can achieve better performance than the comparison methods.Typical image aesthetics assessment (IAA) is modeled for the generic aesthetics perceived by an ``average'' user. However, such generic aesthetics models neglect the fact that users' aesthetic preferences vary significantly depending on their unique preferences. Therefore, it is essential to tackle the issue for personalized IAA (PIAA). Since PIAA is a typical small sample learning (SSL) problem, existing PIAA models are usually built by fine-tuning the well-established generic IAA (GIAA) models, which are regarded as prior knowledge. Nevertheless, this kind of prior knowledge based on ``average aesthetics'' fails to incarnate the aesthetic diversity of different people. In order to learn the shared prior knowledge when different people judge aesthetics, that is, learn how people judge image aesthetics, we propose a PIAA method based on meta-learning with bilevel gradient optimization (BLG-PIAA), which is trained using individual aesthetic data directly and generalizes to unknown users quickly. The proposed approach consists of two phases 1) meta-training and 2) meta-testing.
    Multiview learning has received substantial attention over the past decade due to its powerful capacity in integrating various types of information. Conventional unsupervised multiview dimension reduction (UMDR) methods are usually conducted in an offline manner and may fail in many real-world applications, where data arrive sequentially and the data distribution changes periodically. Moreover, satisfying the requirements of high memory consumption and expensive retraining of the time cost in large-scale scenarios are difficult. To remedy these drawbacks, we propose an online UMDR (OUMDR) framework. OUMDR aims to seek a low-dimensional and informative consensus representation for streaming multiview data. View-specific weights are also learned in this article to reflect the contributions of different views to the final consensus presentation. A specific model called OUMDR-E is developed by introducing the exclusive group LASSO (EG-LASSO) to explore the intraview and interview correlations. Then, we develop an efficient iterative algorithm with limited memory and time cost requirements for optimization, where the convergence of each update is theoretically guaranteed. We evaluate the proposed approach in video-based expression recognition applications. The experimental results demonstrate the superiority of our approach in terms of both effectiveness and efficiency.This article is to tackle the event-based state-feedback control problem for interval type-2 (IT2) fuzzy systems subject to the fading channel. For saving communication resources, a dynamic event-triggered (ET) mechanism is utilized to decide the data transmission from sensors to the controller. A time-varying random process is employed to characterize the fading phenomenon in the unpredictable communication network. By considering the effect of channel fading, a nonparallel distribution compensation (non-PDC) IT2 fuzzy controller is synthesized and its number of rules and membership functions (MFs) can be freely selected. As a consequence, the closed-loop fuzzy system possesses imperfectly matched MFs. By taking the global membership boundary information into stability analysis, the membership-function-dependent analysis method is employed to handle these imperfectly matched MFs and to obtain relaxed criteria. Besides, sufficient criteria are obtained so that the resulting closed-loop IT2 fuzzy system can achieve stochastic stability despite fading measurements. The effectiveness of the proposed method is illustrated by a mass-spring-damper system and a numerical example.Link weight prediction is an important subject in network science and machine learning. Its applications to social network analysis, network modeling, and bioinformatics are ubiquitous. Although this subject has attracted considerable attention recently, the performance and interpretability of existing prediction models have not been well balanced. This article focuses on an unsupervised mixed strategy for link weight prediction. Here, the target attribute is the link weight, which represents the correlation or strength of the interaction between a pair of nodes. The input of the model is the weighted adjacency matrix without any preprocessing, as widely adopted in the existing models. Extensive observations on a large number of networks show that the new scheme is competitive to the state-of-the-art algorithms concerning both root-mean-square error and Pearson correlation coefficient metrics. Analytic and simulation results suggest that combining the weight consistency of the network and the link weight-associated latent factors of the nodes is a very effective way to solve the link weight prediction problem.Unsupervised domain adaptation (DA) aims to perform classification tasks on the target domain by leveraging rich labeled data in the existing source domain. The key insight of DA is to reduce domain divergence by learning domain-invariant features or transferable instances. Despite its rapid development, there still exist several challenges to explore. At the feature level, aligning both domains only in a single way (i.e., geometrical or statistical) has limited ability to reduce the domain divergence. https://www.selleckchem.com/products/incb28060.html At the instance level, interfering instances often obstruct learning a discriminant subspace when performing the geometrical alignment. At the classifier level, only minimizing the empirical risk on the source domain may result in a negative transfer. To tackle these challenges, this article proposes a novel DA method, called discriminant geometrical and statistical alignment (DGSA). DGSA first aligns the geometrical structure of both domains by projecting original space into a Grassmann manifold, then matches the statistical distributions of both domains by minimizing their maximum mean discrepancy on the manifold. In the former step, DGSA only selects the density peaks to learn the Grassmann manifold and so to reduce the influences of interfering instances. In addition, DGSA exploits the high-confidence soft labels of target landmarks to learn a more discriminant manifold. In the latter step, a structural risk minimization (SRM) classifier is learned to match the distributions (both marginal and conditional) and predict the target labels at the same time. Extensive experiments on objection recognition and human activity recognition tasks demonstrate that DGSA can achieve better performance than the comparison methods.Typical image aesthetics assessment (IAA) is modeled for the generic aesthetics perceived by an ``average'' user. However, such generic aesthetics models neglect the fact that users' aesthetic preferences vary significantly depending on their unique preferences. Therefore, it is essential to tackle the issue for personalized IAA (PIAA). Since PIAA is a typical small sample learning (SSL) problem, existing PIAA models are usually built by fine-tuning the well-established generic IAA (GIAA) models, which are regarded as prior knowledge. Nevertheless, this kind of prior knowledge based on ``average aesthetics'' fails to incarnate the aesthetic diversity of different people. In order to learn the shared prior knowledge when different people judge aesthetics, that is, learn how people judge image aesthetics, we propose a PIAA method based on meta-learning with bilevel gradient optimization (BLG-PIAA), which is trained using individual aesthetic data directly and generalizes to unknown users quickly. The proposed approach consists of two phases 1) meta-training and 2) meta-testing.
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  • Background Advances in the health sciences rely on sharing research and data through publication. As information professionals are often asked to contribute their knowledge to assist clinicians and researchers in selecting journals for publication, the authors recognized an opportunity to build a decision support tool, SPI-Hub Scholarly Publishing Information Hub™, to capture the team's collective publishing industry knowledge, while carefully retaining the quality of service. Case Presentation SPI-Hub's decision support functionality relies on a data framework that describes journal publication policies and practices through a newly designed metadata structure, the Knowledge Management Journal Record™. Metadata fields are populated through a semi-automated process that uses custom programming to access content from multiple sources. Each record includes 25 metadata fields representing best publishing practices. Currently, the database includes more than 24,000 health sciences journal records. To correctly capture the resources needed for both completion and future maintenance of the project, the team conducted an internal study to assess time requirements for completing records through different stages of automation. Conclusions The journal decision support tool, SPI-Hub, provides an opportunity to assess publication practices by compiling data from a variety of sources in a single location. Automated and semi-automated approaches have effectively reduced the time needed for data collection. Through a comprehensive knowledge management framework and the incorporation of multiple quality points specific to each journal, SPI-Hub provides prospective users with both recommendations for publication and holistic assessment of the trustworthiness of journals in which to publish research and acquire trusted knowledge. Copyright © 2020, Authors.Background Health care continuing education conferences are important educational events that present opportunities for structured learning, interactive sharing, and professional networking. Conference presenters frequently cite published literature, such as clinical trials, to supply an evidence-based foundation, with presenters' slides often shared with conference attendees. By using social media, these conferences can have greater impact, assist in supporting evidence-based clinical practice, and increase stakeholder engagement. Case Presentation The authors present a case of embedding a health sciences librarian into the Annual Johns Hopkins Critical Care Rehabilitation Conference. The librarian served multiple roles, including social media ambassador, conference exhibitor, and presenter. We explore how these roles contributed to the field of early rehabilitation research through information dissemination and education. We also address best practices for librarian support of the conference, with a discussion of tools, platforms, and work flows that were beneficial. Conclusions Librarian integration facilitated education about bibliographic literature database content, database searching, critical appraisal, and reporting of search methodology. Additionally, the librarian contributed to real-time distribution of scholarly literature through proficiency with web platforms, citation management programs, and social media. Librarians' expertise in information organization and dissemination, as well as various technology platforms, make them a valuable addition to health care conferences. Copyright © 2020, Authors.Objective This article describes the evaluation of the experiences and needs of users of the Drug Information Resources (DIR) website. The DIR website attracts traffic and use from around the world, with the highest number of users in Canada and the United States. Methods An online questionnaire was developed through use of a literature review and Google Analytics data. Face validity testing and test-retest reliability were completed prior to releasing the questionnaire. Results Although the Google Analytics data showed that the site is used internationally, most respondents were Canadian students. They used the site for academic and clinical purposes and reported it was easy to use, was well organized, and included required resources, and they would recommend it to others. Conclusion The DIR website was found to be a valuable resource for educational and clinical use. Future studies will aim to obtain input from international users. Copyright © 2020, Authors.Objective As access to information grows in tandem with the growth of the Internet, access to grey literature also increases. Because little is known about the use of grey literature in nursing journals, the authors investigated the prevalence and types of grey literature citations in top nursing journals. Methods We analyzed all citations (n=52,116) from articles published in 2011 in 6 top nursing journals selected from the Medical Library Association's Nursing and Allied Health Resource Section's 2012 "Selected List of Nursing Journals." Grey literature citations were identified and categorized by type. https://www.selleckchem.com/products/rp-6685.html Results Grey literature accounted for 10.4% of citations across all 6 journals. Publications from governments (54.3%) and corporate organizations (26.8%) were the most common types of grey literature. Conclusion The substantial citation of grey literature in nursing journals shows that nursing scholars seek and use this category of information. These findings have implications for teaching and learning among nursing researchers and the information professionals who serve the nursing research community. Copyright © 2020, Authors.Objective In recent years, individuals and small organizations have developed new online learning and information resources that are often marketed directly to students. In this study, these nontraditional online resources are defined as apps or other online resources that are not available through large and well-known publishers. The purposes of this study are to determine if academic health sciences libraries are licensing nontraditional online resources and to provide a snapshot of current collections practices in this area. Methods An online survey was designed and distributed to the email lists of the Collection Development Section of the Medical Library Association and Association of Academic Health Sciences Libraries directors. Follow-up phone interviews were conducted with survey participants who volunteered to be contacted. Results Of the 58 survey respondents, 21 (36.2%) reported that their libraries currently licensed at least 1 nontraditional online resource, and 45 (77.6%) reported receiving requests for these types of resources.
    Background Advances in the health sciences rely on sharing research and data through publication. As information professionals are often asked to contribute their knowledge to assist clinicians and researchers in selecting journals for publication, the authors recognized an opportunity to build a decision support tool, SPI-Hub Scholarly Publishing Information Hub™, to capture the team's collective publishing industry knowledge, while carefully retaining the quality of service. Case Presentation SPI-Hub's decision support functionality relies on a data framework that describes journal publication policies and practices through a newly designed metadata structure, the Knowledge Management Journal Record™. Metadata fields are populated through a semi-automated process that uses custom programming to access content from multiple sources. Each record includes 25 metadata fields representing best publishing practices. Currently, the database includes more than 24,000 health sciences journal records. To correctly capture the resources needed for both completion and future maintenance of the project, the team conducted an internal study to assess time requirements for completing records through different stages of automation. Conclusions The journal decision support tool, SPI-Hub, provides an opportunity to assess publication practices by compiling data from a variety of sources in a single location. Automated and semi-automated approaches have effectively reduced the time needed for data collection. Through a comprehensive knowledge management framework and the incorporation of multiple quality points specific to each journal, SPI-Hub provides prospective users with both recommendations for publication and holistic assessment of the trustworthiness of journals in which to publish research and acquire trusted knowledge. Copyright © 2020, Authors.Background Health care continuing education conferences are important educational events that present opportunities for structured learning, interactive sharing, and professional networking. Conference presenters frequently cite published literature, such as clinical trials, to supply an evidence-based foundation, with presenters' slides often shared with conference attendees. By using social media, these conferences can have greater impact, assist in supporting evidence-based clinical practice, and increase stakeholder engagement. Case Presentation The authors present a case of embedding a health sciences librarian into the Annual Johns Hopkins Critical Care Rehabilitation Conference. The librarian served multiple roles, including social media ambassador, conference exhibitor, and presenter. We explore how these roles contributed to the field of early rehabilitation research through information dissemination and education. We also address best practices for librarian support of the conference, with a discussion of tools, platforms, and work flows that were beneficial. Conclusions Librarian integration facilitated education about bibliographic literature database content, database searching, critical appraisal, and reporting of search methodology. Additionally, the librarian contributed to real-time distribution of scholarly literature through proficiency with web platforms, citation management programs, and social media. Librarians' expertise in information organization and dissemination, as well as various technology platforms, make them a valuable addition to health care conferences. Copyright © 2020, Authors.Objective This article describes the evaluation of the experiences and needs of users of the Drug Information Resources (DIR) website. The DIR website attracts traffic and use from around the world, with the highest number of users in Canada and the United States. Methods An online questionnaire was developed through use of a literature review and Google Analytics data. Face validity testing and test-retest reliability were completed prior to releasing the questionnaire. Results Although the Google Analytics data showed that the site is used internationally, most respondents were Canadian students. They used the site for academic and clinical purposes and reported it was easy to use, was well organized, and included required resources, and they would recommend it to others. Conclusion The DIR website was found to be a valuable resource for educational and clinical use. Future studies will aim to obtain input from international users. Copyright © 2020, Authors.Objective As access to information grows in tandem with the growth of the Internet, access to grey literature also increases. Because little is known about the use of grey literature in nursing journals, the authors investigated the prevalence and types of grey literature citations in top nursing journals. Methods We analyzed all citations (n=52,116) from articles published in 2011 in 6 top nursing journals selected from the Medical Library Association's Nursing and Allied Health Resource Section's 2012 "Selected List of Nursing Journals." Grey literature citations were identified and categorized by type. https://www.selleckchem.com/products/rp-6685.html Results Grey literature accounted for 10.4% of citations across all 6 journals. Publications from governments (54.3%) and corporate organizations (26.8%) were the most common types of grey literature. Conclusion The substantial citation of grey literature in nursing journals shows that nursing scholars seek and use this category of information. These findings have implications for teaching and learning among nursing researchers and the information professionals who serve the nursing research community. Copyright © 2020, Authors.Objective In recent years, individuals and small organizations have developed new online learning and information resources that are often marketed directly to students. In this study, these nontraditional online resources are defined as apps or other online resources that are not available through large and well-known publishers. The purposes of this study are to determine if academic health sciences libraries are licensing nontraditional online resources and to provide a snapshot of current collections practices in this area. Methods An online survey was designed and distributed to the email lists of the Collection Development Section of the Medical Library Association and Association of Academic Health Sciences Libraries directors. Follow-up phone interviews were conducted with survey participants who volunteered to be contacted. Results Of the 58 survey respondents, 21 (36.2%) reported that their libraries currently licensed at least 1 nontraditional online resource, and 45 (77.6%) reported receiving requests for these types of resources.
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  • PURPOSE With the COVID-19 crisis, recommendations for personal protective equipment (PPE) are necessary for protection in orthopaedics and traumatology. The primary purpose of this study is to review and present current evidence and recommendations for personal protective equipment and safety recommendations for orthopaedic surgeons and trauma surgeons. METHODS A systematic review of the available literature was performed using the keyword terms "COVID-19", "Coronavirus", "surgeon", "health-care workers", "protection", "masks", "gloves", "gowns", "helmets", and "aerosol" in several combinations. The following databases were assessed Pubmed, Cochrane Reviews, Google Scholar. Due to the paucity of available data, it was decided to present it in a narrative manner. In addition, participating doctors were asked to provide their guidelines for PPE in their countries (Austria, Luxembourg, Switzerland, Germany, UK) for consideration in the presented practice recommendations. RESULTS World Health Organization guidancsolution due to a permeable top for air intake. During the current COVID-19 crisis, it appeared that telemedicine can be considered as an electronic personal protective equipment by reducing the number of physical contacts and risk contamination. CONCLUSION Orthopaedic and trauma surgery using power tools, pulsatile lavage and electrocautery are surgical aerosol-generating procedures and all body fluids contain virus particles. Raising awareness of these issues will help avoid occupational transmission of COVID-19 to the surgical team by aerosolization of blood or other body fluids and hence adequate PPE should be available and used during orthopaedic surgery. In addition, efforts have to be made to improve the current evidence in this regard. LEVEL OF EVIDENCE IV.The vermiform appendix is considered the most mobile organ in the human body. Due to its various positions in the abdomen and pelvis, it may result in confusion in diagnosis to the surgeons when it becomes inflamed. Atypical locations of the appendix have been reported previously in the literature. https://www.selleckchem.com/products/iclepertin.html We report an unusual location of the vermiform appendix in the right retro-psoas muscle space that was incidentally discovered in a male patient who was involved in a road traffic accident.A selective 5-HT2A receptor antagonist ketanserin has been used preclinically to improve renal blood flow because of its beneficial effect on autoregulation in various chronic kidney disease models. Ketanserin might be able to turn down adriamycin-induced chronic kidney disease, which is characterized by renal fibrosis, inflammation and structural and functional changes in glomeruli. In the present study, we investigated whether ketanserin suppresses these renal alterations or not. Wistar rats were administered with a single dose of adriamycin (6 mg/kg/i.v), which leads to development of severe tubulointerstitial fibrosis with altered renal function. Subsequent ketanserin treatment (5 mg/kg/p.o) for 4 weeks shown significant change in oxidative stress, serum and urine parameters in adriamycin-induced chronic kidney disease rats. Additionally, results showed that mRNA expression of TGF-β and collagen IV, which are known to promote fibrosis via various signaling pathways involved in the progression of renal disease, was suppressed by ketanserin treatment. Furthermore, expression levels of 5-HT2A and pro-inflammatory marker IL-6 have also been reduced significantly after ketanserin administration in adriamycin-treated animals. Moreover, histopathological studies also reveal the considerable structural changes after ketanserin treatment, and these results are further supported via data obtained from the percentage of glomeruli size changes. In conclusion, ketanserin reduces renal fibrosis and inflammation in adriamycin-induced chronic kidney disease by suppressing 5-HT2A, IL-6, TGF-β and collagen IV expression in renal tissue.Malva parviflora is used as food in the gastronomy of some regions of Mexico and, also, in Mexican traditional medicine for inflammation-related conditions like rheumatoid arthritis. The objective of this work was to evaluate its antiarthritic activity in a **** model. In ICR, female **** were tested the dichloromethane extract (MpD) and fractions MpF4 (extracted with a dichoromethanemethanol system) and MpFphy (a precipitate by acetonemethanol) by using the mono-arthritis with kaolin/carrageenan model. During the treatment, joint inflammation was measured daily, and hyperalgesia was measured using the hot plate test. The treatments diminished both joint inflammation and pain. At the end of the evaluation, the left joint and spleen were extracted for determination of pro- and anti-inflammatory cytokines. The results showed that the MpD, MpF4, and MpFphy treatments modulated the concentration of these proteins. Specifically, MpFphy at 1.0 mg/kg increased IL-4 and IL-10 and decreased IL-17, IL-1β, and TNF-α. GC-MS analysis showed that MpF4 contained a mixture of a total of nine compounds, three of them newly reported for the species. The studies confirmed the presence of five sterols in the MpFphy fraction, including stigmasterol and β-sitosterol. These results confirm the anti-rheumatoid and anti-inflammatory activities of a fraction rich in sterols from Malva parviflora. Graphical abstract.The influence of peripheral blood stem cell (PBSC) graft cell contents after transplant with post-transplant cyclophosphamide (PTCY) remains unclear. Here, we retrospectively report on a cohort of 77 adults who received a Baltimore-based reduced-intensity conditioning regimen either with fludarabine (n = 40) or clofarabine (n = 37) and PTCY. With a median follow-up of 29.2 months, [2-]year overall (OS), disease-free (DFS), and GVHD/relapse-free survival (GRFS) rates were 62.8%, 51%, and 36.7%, respectively. The incidence of grades [2-]4 acute GVHD was significantly higher in patients transplanted with a haplodonor (n = 56), at 57.1% vs 19% (p = 0.006). PBSC graft cell contents (CD45+, CD34+, and CD3+ cells) had no impact on any outcome. Considering immune reconstitution until 1 year, only monocytes were above the normal range (as early as day + 30) during the first year post-transplant. In multivariate analysis, an older donor (> 45 years) and a high/very high disease risk index were independently associated with lower OS.
    PURPOSE With the COVID-19 crisis, recommendations for personal protective equipment (PPE) are necessary for protection in orthopaedics and traumatology. The primary purpose of this study is to review and present current evidence and recommendations for personal protective equipment and safety recommendations for orthopaedic surgeons and trauma surgeons. METHODS A systematic review of the available literature was performed using the keyword terms "COVID-19", "Coronavirus", "surgeon", "health-care workers", "protection", "masks", "gloves", "gowns", "helmets", and "aerosol" in several combinations. The following databases were assessed Pubmed, Cochrane Reviews, Google Scholar. Due to the paucity of available data, it was decided to present it in a narrative manner. In addition, participating doctors were asked to provide their guidelines for PPE in their countries (Austria, Luxembourg, Switzerland, Germany, UK) for consideration in the presented practice recommendations. RESULTS World Health Organization guidancsolution due to a permeable top for air intake. During the current COVID-19 crisis, it appeared that telemedicine can be considered as an electronic personal protective equipment by reducing the number of physical contacts and risk contamination. CONCLUSION Orthopaedic and trauma surgery using power tools, pulsatile lavage and electrocautery are surgical aerosol-generating procedures and all body fluids contain virus particles. Raising awareness of these issues will help avoid occupational transmission of COVID-19 to the surgical team by aerosolization of blood or other body fluids and hence adequate PPE should be available and used during orthopaedic surgery. In addition, efforts have to be made to improve the current evidence in this regard. LEVEL OF EVIDENCE IV.The vermiform appendix is considered the most mobile organ in the human body. Due to its various positions in the abdomen and pelvis, it may result in confusion in diagnosis to the surgeons when it becomes inflamed. Atypical locations of the appendix have been reported previously in the literature. https://www.selleckchem.com/products/iclepertin.html We report an unusual location of the vermiform appendix in the right retro-psoas muscle space that was incidentally discovered in a male patient who was involved in a road traffic accident.A selective 5-HT2A receptor antagonist ketanserin has been used preclinically to improve renal blood flow because of its beneficial effect on autoregulation in various chronic kidney disease models. Ketanserin might be able to turn down adriamycin-induced chronic kidney disease, which is characterized by renal fibrosis, inflammation and structural and functional changes in glomeruli. In the present study, we investigated whether ketanserin suppresses these renal alterations or not. Wistar rats were administered with a single dose of adriamycin (6 mg/kg/i.v), which leads to development of severe tubulointerstitial fibrosis with altered renal function. Subsequent ketanserin treatment (5 mg/kg/p.o) for 4 weeks shown significant change in oxidative stress, serum and urine parameters in adriamycin-induced chronic kidney disease rats. Additionally, results showed that mRNA expression of TGF-β and collagen IV, which are known to promote fibrosis via various signaling pathways involved in the progression of renal disease, was suppressed by ketanserin treatment. Furthermore, expression levels of 5-HT2A and pro-inflammatory marker IL-6 have also been reduced significantly after ketanserin administration in adriamycin-treated animals. Moreover, histopathological studies also reveal the considerable structural changes after ketanserin treatment, and these results are further supported via data obtained from the percentage of glomeruli size changes. In conclusion, ketanserin reduces renal fibrosis and inflammation in adriamycin-induced chronic kidney disease by suppressing 5-HT2A, IL-6, TGF-β and collagen IV expression in renal tissue.Malva parviflora is used as food in the gastronomy of some regions of Mexico and, also, in Mexican traditional medicine for inflammation-related conditions like rheumatoid arthritis. The objective of this work was to evaluate its antiarthritic activity in a mice model. In ICR, female mice were tested the dichloromethane extract (MpD) and fractions MpF4 (extracted with a dichoromethanemethanol system) and MpFphy (a precipitate by acetonemethanol) by using the mono-arthritis with kaolin/carrageenan model. During the treatment, joint inflammation was measured daily, and hyperalgesia was measured using the hot plate test. The treatments diminished both joint inflammation and pain. At the end of the evaluation, the left joint and spleen were extracted for determination of pro- and anti-inflammatory cytokines. The results showed that the MpD, MpF4, and MpFphy treatments modulated the concentration of these proteins. Specifically, MpFphy at 1.0 mg/kg increased IL-4 and IL-10 and decreased IL-17, IL-1β, and TNF-α. GC-MS analysis showed that MpF4 contained a mixture of a total of nine compounds, three of them newly reported for the species. The studies confirmed the presence of five sterols in the MpFphy fraction, including stigmasterol and β-sitosterol. These results confirm the anti-rheumatoid and anti-inflammatory activities of a fraction rich in sterols from Malva parviflora. Graphical abstract.The influence of peripheral blood stem cell (PBSC) graft cell contents after transplant with post-transplant cyclophosphamide (PTCY) remains unclear. Here, we retrospectively report on a cohort of 77 adults who received a Baltimore-based reduced-intensity conditioning regimen either with fludarabine (n = 40) or clofarabine (n = 37) and PTCY. With a median follow-up of 29.2 months, [2-]year overall (OS), disease-free (DFS), and GVHD/relapse-free survival (GRFS) rates were 62.8%, 51%, and 36.7%, respectively. The incidence of grades [2-]4 acute GVHD was significantly higher in patients transplanted with a haplodonor (n = 56), at 57.1% vs 19% (p = 0.006). PBSC graft cell contents (CD45+, CD34+, and CD3+ cells) had no impact on any outcome. Considering immune reconstitution until 1 year, only monocytes were above the normal range (as early as day + 30) during the first year post-transplant. In multivariate analysis, an older donor (> 45 years) and a high/very high disease risk index were independently associated with lower OS.
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  • Airfoil selection procedure, wind tunnel testing and an implementation of 6-DOF model on flying wing micro aerial vehicle (FWMAV) has been proposed in this research. The selection procedure of airfoil has been developed by considering parameters related to aerodynamic efficiency and flight stability. Airfoil aerodynamic parameters have been calculated using a potential flow solver for ten candidate airfoils. Eppler-387 proved to be the most efficient reflexed airfoil and therefore was selected for fabrication and further flight testing of vehicle. https://www.selleckchem.com/products/baxdrostat.html Elevon control surfaces have been designed and evaluated for longitudinal and lateral control. The vehicle was fabricated using hot wire machine with EPP styrofoam of density 50 Kg/ m 3 . Static aerodynamic coefficients were evaluated using wind tunnel tests conducted at cruise velocity of 20 m/s for varying angles of attack. Rate derivatives and elevon control derivatives have also been calculated. Equations of motion for FWMAV have been written in a body axis system yielding a 6-DOF model. It was found during flight tests that vehicle conducted coordinated turns with no appreciable adverse yaw. Since FWMAV was not designed with a vertical stabilizer and rudder control surface, directional stability was therefore augmented through winglets and high wing leading edge sweep. Major problems encountered during flight tests were related to left rolling tendency. The left roll tendency was found inherent to clockwise rotating propeller as 'P' factor, gyroscopic precession, torque effect and spiraling slipstream. To achieve successful flights, many actions were required including removal of excessive play from elevon control rods, active actuation of control surfaces, enhanced launch speed during take off, and increased throttle control during initial phase of flight. FWMAV flew many successful stable flights in which intended mission profile was accomplished, thereby validating the proposed airfoil selection procedure, modeling technique and proposed design.Deformation behavior and precipitation features of an Al-Cu alloy are investigated using uniaxial tensile tests at intermediate temperatures. It is found that the true stress drops with the decreased strain rate or the increased deformation temperature. The number of substructures and the degree of grain elongation decrease with the raised temperature or the decreased strain rate. At high temperatures or low strain rates, some dynamic recrystallized grains can be found. The type of precipitates is influenced by the heating process before hot tensile deformation. The content and size of precipitates increase during tensile deformation at intermediate temperatures. As the temperature increases over 200 °C, the precipitation process (Guinier Preston zone (G.P. zones)→θ'' phase→θ' phase) is enhanced, resulting in increased contents of θ'' and θ' phases. However, θ'' and θ' phases prefer to precipitate along the 020Al direction, resulting in an uneven distribution of phases. Considering the flow softening degree and the excessive heterogeneous precipitation of θ'' and θ' phases during hot deformation, the reasonable strain rate and temperature are about 0.0003 s-1 and 150 °C, respectively.The diversity and biotechnological potentialities of bacterial isolates from brines of three Antarctic lakes of the Northern Victoria Land (namely Boulder Clay and Tarn Flat areas) were first explored. Cultivable bacterial communities were analysed mainly in terms of bacterial response to contaminants (i.e., antibiotics and heavy metals) and oxidation of contaminants (i.e., aliphatic and aromatic hydrocarbons and polychlorobiphenyls). Moreover, the biosynthesis of biomolecules (antibiotics, extracellular polymeric substances and enzymes) with applications for human health and environmental protection was assayed. A total of 74 and 141 isolates were retrieved from Boulder Clay and Tarn Flat brines, respectively. Based on 16S rRNA gene sequence similarities, bacterial isolates represented three phyla, namely Proteobacteria (i.e., Gamma- and Alphaproteobacteria), Bacteroidetes and Actinobacteria, with differences encountered among brines. At genus level, Rhodobacter, Pseudomonas, Psychrobacter and Leifsonia members were dominant. Results obtained from this study on the physiological and enzymatic features of cold-adapted isolates from Antarctic lake brines provide interesting prospects for possible applications in the biotechnological field through future targeted surveys. Finally, findings on contaminant occurrence and bacterial response suggest that bacteria might be used as bioindicators for tracking human footprints in these remote polar areas.Leishmania protozoa are the etiological agents of visceral, cutaneous and mucocutaneous leishmaniasis. In specific geographical regions, such as Latin America, several Leishmania species are endemic and simultaneously present; therefore, a diagnostic method for species discrimination is warranted. In this attempt, many qPCR-based assays have been developed. Recently, we have shown that L. (L.) infantum and L. (L.) amazonensis can be distinguished through the comparison of the Cq values from two qPCR assays (qPCR-ML and qPCR-ama), designed to amplify kDNA minicircle subclasses more represented in L. (L.) infantum and L. (L.) amazonensis, respectively. This paper describes the application of this approach to L. (L.) mexicana and introduces a new qPCR-ITS1 assay followed by high-resolution melt (HRM) analysis to differentiate this species from L. (L.) amazonensis. We show that L. (L.) mexicana can be distinguished from L. (L.) infantum using the same approach we had previously validated for L. (L.) amazonensis. Moreover, it was also possible to reliably discriminate L. (L.) mexicana from L. (L.) amazonensis by using qPCR-ITS1 followed by an HRM analysis. Therefore, a diagnostic algorithm based on sequential qPCR assays coupled with HRM analysis was established to identify/differentiate L. (L.) infantum, L. (L.) amazonensis, L. (L.) mexicana and Viannia subgenus. These findings update and extend previous data published by our research group, providing an additional diagnostic tool in endemic areas with co-existing species.
    Airfoil selection procedure, wind tunnel testing and an implementation of 6-DOF model on flying wing micro aerial vehicle (FWMAV) has been proposed in this research. The selection procedure of airfoil has been developed by considering parameters related to aerodynamic efficiency and flight stability. Airfoil aerodynamic parameters have been calculated using a potential flow solver for ten candidate airfoils. Eppler-387 proved to be the most efficient reflexed airfoil and therefore was selected for fabrication and further flight testing of vehicle. https://www.selleckchem.com/products/baxdrostat.html Elevon control surfaces have been designed and evaluated for longitudinal and lateral control. The vehicle was fabricated using hot wire machine with EPP styrofoam of density 50 Kg/ m 3 . Static aerodynamic coefficients were evaluated using wind tunnel tests conducted at cruise velocity of 20 m/s for varying angles of attack. Rate derivatives and elevon control derivatives have also been calculated. Equations of motion for FWMAV have been written in a body axis system yielding a 6-DOF model. It was found during flight tests that vehicle conducted coordinated turns with no appreciable adverse yaw. Since FWMAV was not designed with a vertical stabilizer and rudder control surface, directional stability was therefore augmented through winglets and high wing leading edge sweep. Major problems encountered during flight tests were related to left rolling tendency. The left roll tendency was found inherent to clockwise rotating propeller as 'P' factor, gyroscopic precession, torque effect and spiraling slipstream. To achieve successful flights, many actions were required including removal of excessive play from elevon control rods, active actuation of control surfaces, enhanced launch speed during take off, and increased throttle control during initial phase of flight. FWMAV flew many successful stable flights in which intended mission profile was accomplished, thereby validating the proposed airfoil selection procedure, modeling technique and proposed design.Deformation behavior and precipitation features of an Al-Cu alloy are investigated using uniaxial tensile tests at intermediate temperatures. It is found that the true stress drops with the decreased strain rate or the increased deformation temperature. The number of substructures and the degree of grain elongation decrease with the raised temperature or the decreased strain rate. At high temperatures or low strain rates, some dynamic recrystallized grains can be found. The type of precipitates is influenced by the heating process before hot tensile deformation. The content and size of precipitates increase during tensile deformation at intermediate temperatures. As the temperature increases over 200 °C, the precipitation process (Guinier Preston zone (G.P. zones)→θ'' phase→θ' phase) is enhanced, resulting in increased contents of θ'' and θ' phases. However, θ'' and θ' phases prefer to precipitate along the 020Al direction, resulting in an uneven distribution of phases. Considering the flow softening degree and the excessive heterogeneous precipitation of θ'' and θ' phases during hot deformation, the reasonable strain rate and temperature are about 0.0003 s-1 and 150 °C, respectively.The diversity and biotechnological potentialities of bacterial isolates from brines of three Antarctic lakes of the Northern Victoria Land (namely Boulder Clay and Tarn Flat areas) were first explored. Cultivable bacterial communities were analysed mainly in terms of bacterial response to contaminants (i.e., antibiotics and heavy metals) and oxidation of contaminants (i.e., aliphatic and aromatic hydrocarbons and polychlorobiphenyls). Moreover, the biosynthesis of biomolecules (antibiotics, extracellular polymeric substances and enzymes) with applications for human health and environmental protection was assayed. A total of 74 and 141 isolates were retrieved from Boulder Clay and Tarn Flat brines, respectively. Based on 16S rRNA gene sequence similarities, bacterial isolates represented three phyla, namely Proteobacteria (i.e., Gamma- and Alphaproteobacteria), Bacteroidetes and Actinobacteria, with differences encountered among brines. At genus level, Rhodobacter, Pseudomonas, Psychrobacter and Leifsonia members were dominant. Results obtained from this study on the physiological and enzymatic features of cold-adapted isolates from Antarctic lake brines provide interesting prospects for possible applications in the biotechnological field through future targeted surveys. Finally, findings on contaminant occurrence and bacterial response suggest that bacteria might be used as bioindicators for tracking human footprints in these remote polar areas.Leishmania protozoa are the etiological agents of visceral, cutaneous and mucocutaneous leishmaniasis. In specific geographical regions, such as Latin America, several Leishmania species are endemic and simultaneously present; therefore, a diagnostic method for species discrimination is warranted. In this attempt, many qPCR-based assays have been developed. Recently, we have shown that L. (L.) infantum and L. (L.) amazonensis can be distinguished through the comparison of the Cq values from two qPCR assays (qPCR-ML and qPCR-ama), designed to amplify kDNA minicircle subclasses more represented in L. (L.) infantum and L. (L.) amazonensis, respectively. This paper describes the application of this approach to L. (L.) mexicana and introduces a new qPCR-ITS1 assay followed by high-resolution melt (HRM) analysis to differentiate this species from L. (L.) amazonensis. We show that L. (L.) mexicana can be distinguished from L. (L.) infantum using the same approach we had previously validated for L. (L.) amazonensis. Moreover, it was also possible to reliably discriminate L. (L.) mexicana from L. (L.) amazonensis by using qPCR-ITS1 followed by an HRM analysis. Therefore, a diagnostic algorithm based on sequential qPCR assays coupled with HRM analysis was established to identify/differentiate L. (L.) infantum, L. (L.) amazonensis, L. (L.) mexicana and Viannia subgenus. These findings update and extend previous data published by our research group, providing an additional diagnostic tool in endemic areas with co-existing species.
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