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Gust response of an elasto-flexible morphing wing using fluid–structure interaction simulations

Chinese Journal of Aeronautics 2024年第2期37卷 45-57页

作者： jonathan PFLÜGER Christian BREITSAMTER Department of Mechanical Engineering Technical University of MunichGarching 85748Germany

Small and micro unmanned aircraft are the focus of scientific interest due to their wide range of *** often operate in a highly unstable flight environment where the application of new morphing wing technologies offers the opportunity to improve flight *** investigated concept comprises port and starboard adjustable wings,and an adaptive elastoflexible membrane serves as the lifting *** focus is on the benefits of the deforming membrane during the impact of a one-minus-cosine type *** a low Reynolds number of Re=264000,the morphing wing model is investigated numerically by unsteady fluid-structure interaction ***,the numerical results are validated by experimental data from force and moment,flow field,and deformation ***,with the rigid wing as the baseline,the flexible case is investigated,focusing on the advantages of the elastic *** all configurations studied,the maximum amplitude of the lift coefficient under gust load shows good agreement between the experimental and numerical *** the decay of the gust,they differ more the higher the aspect ratio of the *** considering the flow field,the main differences are due to the separation behavior on the upper side of the *** flow reattaches earlier in the experiments than in the simulations,which explains the higher lift values observed in the *** at one intermediate configuration does the lift amplitude of the rigid configuration exceeds that of the flexible by about 12%,with the elastic membrane resulting in a smaller and more uniform peak load,which is also evident in the wing loading and hence in the root bending moment.

关键词： Membrane wing Morphing wing Flexible wing surface Computational fluid dynam-ics Fluid-structure interaction Unsteady inflow condition Gust response

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NLRP3 inflammasome plays a vital role in the pathogenesis of age-related diseases in the eye and brain

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Neural Regeneration Research 2024年第7期19卷 1425-1426页

作者： Jack jonathan Maran Odunayo Omolola Mugisho Buchanan Ocular Therapeutics Unit Department of OphthalmologyNew Zealand National Eye CentreUniversity of AucklandAucklandNew Zealand

Key points:With aging,there is increased nucleotide-binding oligomerization domain-(NOD-)like receptor(NLR) protein-3(NLRP3) activation in neural and ocular *** of the NLRP3 inflammasome appears to be a common denominator in the pathogenesis of age-related diseases of the eye and *** inhibition of the NLRP3 inflammasome may be a potent therapy for preventing the development and progression of age-related eye and brain diseases.

关键词： NLRP3 pathogenesis inflam

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Treatment of Helicobacter pylori with potassium competitive acid blockers:A systematic review and meta-analysis

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World Journal of Gastroenterology 2024年第9期30卷 1213-1223页

作者： Joseph Edwin Kanu jonathan Soldera Post Graduate Program at Acute Medicine and Gastroenterology University of South WalesCardiff CF371DLUnited Kingdom

BACKGROUND Helicobacter pylori(***)infects over half the global population,causing gastrointestinal diseases like dyspepsia,gastritis,duodenitis,peptic ulcers,GMALT lymphoma,and gastric *** *** is crucial for treating and preventing these *** conventional proton pump inhibitor(PPI)-based triple therapy is effective,there’s growing interest in longer acid suppression *** competitive acid blocker(P-CAB)triple and dual therapy are new regimens for *** *** used in Asian populations,vonoprazan(VPZ)has been recently Food and Drug Administration-approved for *** *** To assess the efficacy of regimens containing P-CABs in eradicating *** *** This study,following PRISMA 2020 guidelines,conducted a systematic review and meta-analysis by searching MEDLINE and Scopus libraries for randomized clinical trials(RCTs)or observational studies with the following command:[("Helicobacter pylori"OR"H pylori")AND("Treatment"OR"Therapy"OR"Eradication")AND("Vonaprazan"OR"Potassium-Competitive Acid Blocker"OR"P-CAB"OR"PCAB"OR"Revaprazan"OR"Linaprazan"OR"Soraprazan"OR"Tegoprazan")].Studies comparing the efficacy of P-CABs-based treatment to classical PPIs in eradicating *** were *** criteria included case reports,case series,unpublished trials,or conference *** variables encompassed age,diagnosis method,sample sizes,study duration,intervention and control,and *** eradication method were gathered by two independent ***-analysis was performed in R software,and forest plots were *** A total of 256 references were initially retrieved through the search ***,fifteen studies(7 RCTs,7 retrospective observational studies,and 1 comparative unique study)were included,comparing P-CAB triple therapy to PPI triple *** intention-to-treat analysis involved 8049 patients,with 4471 in the P-CAB intervention g

关键词： Helicobacter pylori infection Potassium competitive acid blockers Proton pump inhibitors Vonoprazan Amoxicillin

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On the calibration of a shear stress criterion for rock joints to represent the full stress-strain profile

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 379-392页

作者： Akram Deiminiat jonathan D.Aubertin Yannic Ethier Department of Construction Engineering École de Technologie Supérieure(ÉTS)MontréalCanada

Conventional numerical solutions developed to describe the geomechanical behavior of rock interfaces subjected to differential load emphasize peak and residual shear *** detailed analysis of preand post-peak shear stress-displacement behavior is central to various time-dependent and dynamic rock mechanic problems such as rockbursts and structural instabilities in highly stressed *** complete stress-displacement surface(CSDS)model was developed to describe analytically the pre-and post-peak behavior of rock interfaces under differential *** formulations of the CSDS model required extensive curve-fitting iterations which limited its practical applicability and transparent integration into engineering *** present work proposes modifications to the CSDS model aimed at developing a comprehensive and modern calibration protocol to describe the complete shear stressdisplacement behavior of rock interfaces under differential *** proposed update to the CSDS model incorporates the concept of mobilized shear strength to enhance the post-peak ***’s concepts of joint roughness coefficient(JRC)and joint compressive strength(JCS)are incorporated to facilitate empirical estimations for peak shear stress and normal closure ***/uniaxial compression test and direct shear test results are used to validate the updated model and exemplify the proposed calibration *** results illustrate that the revised model successfully predicts the post-peak and complete axial stressestrain and shear stressedisplacement curves for rock joints.

关键词： Full shear profile Post-peak shear behavior Rock joint Joint roughness coefficient(JRC) Axial stress-strain curve

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Formadinium Cation Doping Stabilized Ultra-deep-blue Lead Halide Perovskite Nanocrystal Light-emitting Diodes

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Chemical Research in Chinese Universities 2024年第3期40卷 556-560页

作者： Pui Kei KO jonathan E.HALPERT Department of Chemistry The Hong Kong University of Science and TechnologyKowloonHong Kong 999077P.R.China

The halide migration effect in mixed-halide lead-based perovskite is a serious problem hindering the development of its display *** this study,we have successfully addressed this issue by reporting formadinium(FA)doped mixed-halide perovskite nanocrystals(NCs)with ultra-deep-blue emission of 450 nm,narrow bandwidth of 16 nm,and a high photoluminescence quantum yield(PLQY)of 66%.The perovskite nanocrystal light-emitting diodes(NC-LEDs)using this nanocrystal as an active layer achieved a maximum external quantum efficiency(EQE)of 0.32%,30-fold improved compared to that of pristine and stable electroluminescence(EL)spectra at 450 nm under a 4.9–8.0 V *** findings demonstrate the potential of our approach in developing stable and efficient deep blue perovskite NC-LEDs.

关键词： Halide perovskite Light-emitting diode Deep-blue

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人脑正在想什么

人脑正在想什么

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第二十四届全国心理学学术会议

作者：徐婷 Hao-Ting Wang Bronte Mckeown Daniel Gutierrez-Barragan Bo-yong Park Karl-Heinz Nenning Robert Leech Elizabeth Jefferies Daniel Margulies Alessandro Gozzi Michael Milham jonathan smallwood University of York Istituto Italiano di Tecnologia Department of Data Science Inha Unversity King's College London Centre National de la Recherche Scientifque (CNRS) and Universite de Paris Queen's University

越来越多的证据表明,在很多灵长类动物中,清醒状态下脑功能通常在多个状态之间动态转换。一般认为,大脑的神经调节系统可以促使行为适应环境并改变脑的认知状态。本研究考察了人类清醒状态下大脑动态的神经调节作用,识别大脑哪些动态系... 详细信息

越来越多的证据表明,在很多灵长类动物中,清醒状态下脑功能通常在多个状态之间动态转换。一般认为,大脑的神经调节系统可以促使行为适应环境并改变脑的认知状态。本研究考察了人类清醒状态下大脑动态的神经调节作用,识别大脑哪些动态系统与人正在进行的持续思考有关。我们使用的公开的NKI-Rockland样本(年龄:18-50岁,31.78±10.34,n=337,152名男性)中静息状态功能磁共振数据集,并采用"共激活模式分析"方法确定了自然静息态下的脑动态连接。我们分析了这些不同的脑状态与神经递质图谱的关联,以及这些关联是否影响大脑神经动态、与认知问卷测量的静息态下的持续性认知。我们识别出成对的不同连接状态,并计算了其持续时间、发生率和状态间的转换矩阵。最后,我们将脑功能动态连接与多个神经递质的图谱做了关联分析,并使用元分析框架在大尺度功能空间中对脑动态进行解码。我们的研究结果表明,神经调节剂,如多巴胺和5-羟基色氨酸,对清醒脑的神经动态和持续思维模式都有重要贡献。此外,我们的研究强调了神经递质在认知功能动态变化中的重要作用,以及脑高级网络(包括额叶和默认模式网络)在其中的重要作用。

关键词：静息态功能磁共振动态认知神经调控

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Insights into skullcap herb-induced liver injury

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World Journal of Hepatology 2024年第2期16卷 120-122页

作者： jonathan Soldera Post Graduate Program at Acute Medicine and Gastroenterology University of South WalesCardiff CF371DLUnited Kingdom

This editorial addresses the growing concern of herb-induced liver injury(HILI),focusing on a unique case of Skullcap-induced HILI *** editorial underscore the significant mortality rate linked to Skullcap-induced HILI,emphasizing the importance of vigilant monitoring and *** herbal supplement usage rises,collaboration among clinicians and researchers is crucial to comprehend and address the complexities of HILI,particularly those involving Skullcap.

关键词： Herb-induced liver injury Drug induced liver injury Dietary supplements Herbal hepatotoxicity Liver transplantation

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DNA G-Quadruplexes as Targets for Natural Product Drug Discovery

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Engineering 2024年第7期38卷 39-51页

作者： Kai-Bo Wang Yingying Wang jonathan Dickerhoff Danzhou Yang Borch Department of Medicinal Chemistry and Molecular Pharmacology College of PharmacyPurdue UniversityWest LafayetteIN 47907USA Purdue Center for Cancer Research Purdue UniversityWest LafayetteIN 47907USA Department of Chemistry Purdue UniversityWest LafayetteIN 47907USA Purdue Institute for Drug Discovery Purdue UniversityWest LafayetteIN 47907USA Jiangsu Key Laboratory of Bioactive Natural Product Research&State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 210009China

DNA guanine(G)-quadruplexes(G4s)are unique secondary structures formed by two or more stacked Gtetrads in G-rich DNA *** structures have been found to play a crucial role in highly transcribed genes,especially in cancer-related oncogenes,making them attractive targets for cancer ***,targeting oncogene promoter G4 structures has emerged as a promising strategy to address the challenge of undruggable and drug-resistant proteins,such as MYC,BCL2,KRAS,and *** products have long been an important source of drug discovery,particularly in the fields of cancer and infectious *** progress has recently been made in the discovery of naturally occurring DNA G4-targeting *** DNA G4s,such as MYC-G4,BCL2-G4,KRAS-G4,PDGFR-b-G4,VEGF-G4,and telomeric-G4,have been identified as potential targets of natural products,including berberine,telomestatin,quindoline,sanguinarine,isaindigotone,and many ***,we summarize and evaluate recent advancements in natural and nature-derived DNA G4 binders,focusing on understanding the structural recognition of DNA G4s by small molecules derived from *** also discuss the challenges and opportunities associated with developing drugs that target DNA G4s.

关键词： G-quadruplex Natural products Alkaloids Cancer Promoter

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Use of machine learning models for the prognostication of liver transplantation: A systematic review

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World Journal of Transplantation 2024年第1期14卷 164-188页

作者： Gidion Chongo jonathan Soldera Department of Gastroenterology University of South WalesCardiff CF371DLUnited Kingdom

BACKGROUND Liver transplantation(LT)is a life-saving intervention for patients with end-stage liver ***,the equitable allocation of scarce donor organs remains a formidable *** tools are pivotal in identifying the most suitable transplant ***,scoring systems like the model for end-stage liver disease have been instrumental in this ***,the landscape of prognostication is undergoing a transformation with the integration of machine learning(ML)and artificial intelligence *** To assess the utility of ML models in prognostication for LT,comparing their performance and reliability to established traditional scoring *** Following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines,we conducted a thorough and standardized literature search using the PubMed/MEDLINE *** search imposed no restrictions on publication year,age,or *** criteria encompassed non-English studies,review articles,case reports,conference papers,studies with missing data,or those exhibiting evident methodological *** Our search yielded a total of 64 articles,with 23 meeting the inclusion *** the selected studies,60.8%originated from the United States and China *** one pediatric study met the ***,91%of the studies were published within the past five *** models consistently demonstrated satisfactory to excellent area under the receiver operating characteristic curve values(ranging from 0.6 to 1)across all studies,surpassing the performance of traditional scoring *** forest exhibited superior predictive capabilities for 90-d mortality following LT,sepsis,and acute kidney injury(AKI).In contrast,gradient boosting excelled in predicting the risk of graft-versus-host disease,pneumonia,and *** This study underscores the potential of ML models in guiding decisions related to allograft allocation and LT,mark

关键词： Liver transplantation Machine learning models Prognostication Allograft allocation Artificial intelligence

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Toward less invasive coloproctology: The future is out there

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World Journal of Gastroenterology 2024年第3期30卷 199-203页

作者： Sameh Hany Emile jonathan Ragheb Department of Colorectal Surgery Cleveland Clinic FloridaWestonFL 33331United States Department of Gastroenterology and Hepatology Cleveland Clinic FloridaWestonFL 33331United States

Medical care has undergone remarkable improvements over the past few *** of the most important innovative breakthroughs in modern medicine is the advent of minimally and less invasive *** trend towards employing less invasive treatment has been vividly shown in the field of gastroenterology,particularly *** to foregut interventions,colorectal surgery has shifted towards a minimally invasive ***,including both medical and surgical management of colorectal diseases,has undergone a remarkable paradigm *** treatment of both benign and malignant colorectal conditions has gradually transitioned towards more conservative and less inva-sive *** interesting paradigm shift was the trend to avoid the need for radical resection of rectal cancer altogether in patients who showed complete response to neoadjuvant *** trend of adopting less invasive appro-aches to treat various colorectal conditions does not seem to be stopping soon as further research on novel,more effective and safer methods is ongoing.

关键词： Toward Less invasive Minimally invasive Coloproctology Future Colorectal surgery

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