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Simulation of the deformable lateral boundaries in biaxial test using DEM

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Particuology 2024年第5期88卷 161-175页

作者： Ali Momeni Barry clarke Yong Sheng Ali Hassanpour WSP 3 Wellington PlaceLeedsLS1 4APUK Hull University HullHU6 7RXUK School of Civil Engineering University of LeedsLeedsLS2 9JTUK School of Computer Science University of HullHullHU6 7RXUK School of Chemical and Process Engineering University of LeedsLeedsLS2 9JTUK

Applying the discrete element method(DEM)in soil mechanics can provide abundant information at the particle-scale and facilitates illustration of the macro-mechanical behaviour of soils based on the inter-particle *** triaxial test is one of the most common laboratory methods to study the macro-mechanical behaviour of particulate materials such as ***,many problems in geotechnical design can be assumed and simplified as a plane strain *** a biaxial test can be conducted to reproduce the macro-mechanical behaviour of soil,where the sample is enclosed by two horizontal rigid platens and a vertical latex membrane,which is a deformable continuous element and allows the enclosed specimen to deform freely while maintaining confining stress during *** paper presents an algorithm to represent physical and mechanical characteristics of latex membrane in the 2D DEM simulation of biaxial test using the PFC^(2D) *** investigate the impact of the lateral boundary conditions on the micro-macro mechanical behaviours of soil samples,two sets of DEM biaxial tests are conducted,*** rigid and deformable lateral boundary *** DEM modeling results indicate that the lateral boundary conditions have a significant effect on the micro-scale fabric properties,thickness and inclination of the shear *** comparison between these two simulations also demonstrates that the lateral boundary conditions play a major role in the peak and post-peak stress-strain behaviours as well as the dilation and critical state behaviours of granular soils.

关键词： Discrete element method Biaxial test Deformable boundaries Shear band Critical state Fabric anisotropy Geometrical stability index

国际眼光,世界故事——访泰科电子有限公司副总裁Alan clarke

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智能建筑与城市信息 2006年第4期 121-122页

作者：赵晶宜 Alan clarke 泰科电子有限公司

泰科电子有限公司在2006年1月正式对外发布,分拆成三家独立的上市公司,这对泰科电子的综合布线部门是否产生影响?在2006年泰科电子的发展重点在哪里……带着这些问题,本刊记者采访了泰科电子有限公司副总裁AlanClark先生。

关键词：泰科电子有限公司 Alan 总裁国际故事世界上市公司综合布线记者采访

Effectiveness of ivermectin mass drug administration in the control of soil-transmitted helminth infections in endemic populations: a systematic review and meta-analysis

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Infectious Diseases of Poverty 2024年第1期13卷 1-15页

作者： Brandon Le Naomi E.clarke Nicolas Legrand Susana Vaz Nery The Kirby Institute University of New South WalesLevel 6Wallace Wurth BuildingSydneyNSW2052Australia

Background Current soil-transmitted helminth(STH)control guidelines endorse the use of albendazole or meben-dazole for school-based targeted preventive chemotherapy(PC),yet their reduced efficacy against Strongyloides sterc-oralis and Trichuris trichiura presents significant *** evidence indicates that community-wide PC[or mass drug administration(MDA)]using ivermectin,commonly used in other neglected tropical disease(NTD)control programs,may play an important role in controlling these *** conducted a systematic review and meta-analysis to evaluate the effectiveness of ivermectin PC in reducing STH prevalence in endemic *** We searched Pubmed,EMBASE,and Web of Science on February 14,2023,for studies that investigated the effectiveness of ivermectin PC,either alone or in combination with other anthelmintic drugs,on STH infec-tions,and provided a measure of STH prevalence before and after *** calculated pooled prevalence reductions for each STH using random-effects *** protocol is available on PROSPERO(registration number CRD42023401219).Results A total of 21 were eligible for the systematic review,of which 15 were eligible for *** studies delivered ivermectin through *** pooled prevalence reduction of *** following MDA with ivermec-tin alone was 84.49%(95%CI:54.96-94.66)across five studies and 81.37%(95% CI:61.62-90.96)across seven studies with or without *** prevalence reduction of *** was 49.93%(95%CI:18.23-69.34)across five studies with ivermectin alone,and 89.40%(95%CI:73.66-95.73)across three studies with the addition of *** was high heterogeneity for all syntheses(I^(2)>65%).Conclusions This study underscores the key role of ivermectin-based MDA in addressing limitations in current global STH guidelines in terms of limited efficacy against *** and *** on these findings,revising inter-national STH guidelines to include i

关键词： Soil-transmitted helminths Ivermectin Albendazole Mass drug administration Preventive chemotherapy

Use of Patient-Specific “4D” Tele-Education to Enhance Actual and Perceived Knowledge in Congenital Heart Disease (CHD) Patients

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Congenital Heart Disease 2024年第1期19卷 5-17页

作者： Molly clarke Karin Hamann Nancy Klein Laura Olivieri Yue-Hin Loke Department of Inpatient Cardiology Boston Children’s HospitalBoston02115USA Department of Cardiology Children’s National HospitalWashington20001USA Department of Cardiology Noninvasive Cardiac ImagingUniversity of Pittsburgh Medical Center Children’s Hospital of PittsburghPittsburgh15224USA

Background:Patients with congenital heart disease(CHD)will transition to lifelong adult congenital cardiac ***,their structural heart disease is challenging to convey via two-dimensional *** study utilized a tele-educational environment,with personalized three-dimensional(3D)modeling and health Details(3D+Details=“4D”),to improve actual and perceived knowledge,both important components of transition readiness in CHD ***:Participants aged≥13 years with a history of CHD and cardiac magnetic resonance imaging(MRI)studies were *** MRI datasets were then used to segment and create 3D heart models(using Mimics,Materialize Inc.).Participantsﬁrst completed the MyHeart Questionnaire,a validated survey of actual knowledge.A tele-educational session was then scheduled,during which participants were shown a 3D model of a normal heart,followed by their personal 3D heart model and speciﬁc health *** then repeated the actual knowledge survey,in addition to questionnaires assessing perceived knowledge pre-and post-session,as well as a satisfaction ***:Twenty-two patients were *** knowledge increased from 75%±15%to 89%±20%(p=0.00043)and perceived knowledge increased inﬁve of seven *** knowledge correlated with perceived knowledge(r=0.608,p<0.0001).Ninety-one percent of participants ranked the 3D model as“very satisfactory”and ninety-ﬁve percent ranked the educational session as“very help-ful”or“extremely helpful.”Conclusions:The use of“4D”tele-education increased both actual and perceived knowledge and may help improve transition readiness in CHD patients.

关键词： Congenital heart disease tele-education transition

Protocol for the development and validation of a clinical measurement tool for fear of disease progression and recurrence in cardiac patients

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Chronic Diseases and Translational Medicine 2024年第3期10卷 195-204页

作者： Sarah T.clarke Michael Le Grande Barbara M.Murphy Robert Hester Alun C.Jackson Melbourne School of Psychological Sciences University of MelbourneParkvilleVictoriaAustralia Australian Centre for Heart Health MelbourneVictoriaAustralia Centre on Behavioral Health University of Hong KongPokfulamHong KongChina

Introduction: One in two cardiac patients fear having another heart event or their heart condition getting worse. Research in other chronic illnesses demonstrates that screening for fear of progression and recurrence is vital for adequately addressing such concerns in clinical care. The current project aims to develop and validate a measure for fear of progression and recurrence in cardiac ***: The Fear of Cardiac Recurrence and Progression Scale (FCRP) will be developed through a multistep process. An initial item pool will be generated through a review of the literature and existing measures and consultation with and feedback from key informants. The item pool will be tested in a sample of over 250 adults who have ever had an acute coronary event, undergone cardiac surgery, or a chronic cardiac condition. Exploratory factor analysis will be used to identify the underlying factors, and Rasch analysis will be used to reduce the number of items. A short form version of the FCRP will be developed for use as a brief screening tool, informed by clinical relevance and Rasch psychometric ***: While many cardiac patients experience fears related to the progression or recurrence of their illness, there remains the need for a validated tool with which these concerns can be identified and measured. It is expected that the design and validation of the FCRP will aid identification of cardiac patients suffering from clinically significant levels of fear of progression and recurrence and facilitate the design of tailored psychological interventions to target these fears.

关键词： anxiety cardiac anxiety cardiac recovery cardiac rehabilitation depression fear of progression fear of recurrence psychological measurement psychosocial screening

Functional lumen imaging probe use in a high-volume practice:Practical and technical implications

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World Journal of Gastrointestinal Endoscopy 2024年第7期16卷 396-405页

作者： Yan Jiang Raul Vazquez-Reyes Afrin Kamal Thomas Zikos George Triadafilopoulos John O clarke Division of Gastroenterology and Hepatology Stanford University School of MedicineRedwoodCA 94063United States

BACKGROUND The functional lumen imaging probe(FLIP)is a Food and Drug Administration approved tool to aid the diagnosis and management of esophageal ***,widespread adoption of FLIP remains limited and its utility in highvolume practices remains *** To analyze large sample data on clinical use of FLIP and provide insight on several technical aspects when performing *** We conducted a retrospective comparative and descriptive analysis of FLIP procedures performed by a single provider at an academic medical *** was a total of 398 FLIP procedures *** medical records were reviewed and data regarding demographics and procedural details were *** tests,including chi-squared,t-test,and multivariable logistic and linear regression,were *** There was an increase in FLIP cases with each successive time period of 13 months(n=68,146,184,respectively)with notable rises specifically for indications of dysphagia and gastroesophageal reflux *** was a shift toward use of the longer FLIP balloon catheter for diagnostic purposes(overall 70.4%vs 29.6%,P<0.01).Many cases(42.8%)were performed in conjunction with other diagnostics/interventions,such as dilation and wireless pH probe *** were nearly equally performed with anesthesia vs moderate sedation(51.4%anesthesia),with no major *** who had anesthesia were less likely to have recurrent antegrade contractions[odds ratio(OR)=0.4,95%CI:0.3-0.8]and were also more likely to have absent contractility(OR=2.4,95%CI:1.3-CONCLUSION FLIP cases have increased in our practice with expanding indications for its *** limited normative data,providers should be aware of several potential technical issues,including the possible impact of sedation choice when assessing esophageal motility patterns.

关键词： Gastroenterology Endoscopy Functional lumen imaging probe Esophagus Motility

中国非动脉硬化性心血管疾病人群脂蛋白(a)水平分布特征及影响因素

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中华流行病学杂志 2024年第6期45卷 779-786页

作者：柯雅蕾潘烺吕筠孙点剑一裴培陈怡平杨玲杜怀东 clarke Robert 陈君石陈铮鸣章晓陈婷李润琴齐丽彤李立明余灿清中国慢性病前瞻性研究项目协作组北京大学公共卫生学院流行病与卫生统计学系北京100191 北京大学公众健康与重大疫情防控战略研究中心北京100191 重大疾病流行病学教育部重点实验室(北京大学) 北京100191 牛津大学临床与流行病学研究中心纳菲尔德人群健康系牛津OX37LF 国家食品安全风险评估中心北京100022 北京诺华制药有限公司北京102200 北京大学第一医院心内科北京100034 不详

目的描述中国非动脉硬化性心血管疾病(ASCVD)人群脂蛋白(a)[Lp(a)]的分布并分析其影响因素。方法基于中国慢性病前瞻性研究项目的一项巢式病例对照研究,选取其中进行了血液生化指标检测的对照人群进行分析,使用参比实验室检定的多克隆... 详细信息

目的描述中国非动脉硬化性心血管疾病(ASCVD)人群脂蛋白(a)[Lp(a)]的分布并分析其影响因素。方法基于中国慢性病前瞻性研究项目的一项巢式病例对照研究,选取其中进行了血液生化指标检测的对照人群进行分析,使用参比实验室检定的多克隆抗体比浊法测定Lp(a)水平,≥75.0 nmol/L定义为高Lp(a)。采用多因素logistic回归模型分析Lp(a)水平的影响因素。结果在纳入研究的5870名非ASCVD人群中,Lp(a)水平呈正偏态分布,M(Q_(1),Q_(3))为17.5(8.8,43.5)nmol/L。多因素logistic回归分析结果显示,女性与高Lp(a)相关(OR=1.23,95%CI:1.05~1.43),中心性肥胖者的高Lp(a)风险降低(OR=0.68,95%CI:0.52~0.89)。随TC、LDL-C、载脂蛋白A1(Apo A1)和载脂蛋白B(Apo B)水平升高,高Lp(a)风险增加,各升高组的OR值(95%CI)分别为2.40(1.76~3.24)、2.68(1.36~4.93)、1.29(1.03~1.61)和1.65(1.27~2.13);HDL-C降低组高Lp(a)风险降低,OR值(95%CI)为0.76(0.61~0.94);而TG、Apo A1与Apo B的比值(Apo A1/B)与高Lp(a)风险呈负相关,TG升高组的OR值(95%CI)为0.73(0.60~0.89),Apo A1/B升高组的OR值(95%CI)为0.60(0.50~0.72);Lp(a)水平与血脂指标(除Apo A1外)的相关性均存在线性趋势(线性趋势检验P≤0.001)。未发现行为生活方式因素如饮食、吸烟、体力活动水平与Lp(a)水平存在统计学关联。结论Lp(a)水平与性别及中心性肥胖有关,但受行为生活方式因素影响较小。

关键词：脂蛋白(a) 非动脉硬化性心血管疾病人群分布影响因素

Sendai Framework’s Global Targets A and B: Opinions from the Global Platform for Disaster Risk Reduction’s Ignite Stage 2019

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International Journal of Disaster Risk Science 2022年第5期13卷 651-663页

作者： Nibedita S.Ray-Bennett Krishna clarke Daniel Mendez School of Business University of LeicesterLeicester LE17RHUK Avoidable Deaths Network University of LeicesterLeicester LE17RHUK Office of the President Saint Michael Parish of Saint MichaelCaribbean Development BankBridgetown 11000Barbados

The Sendai Framework for Disaster Risk Reduction 2015-2030 set seven global targets of which the first two targets are to reduce disaster deaths(target A) and diminish the number of affected people globally(target B)by *** realize these targets,the United Nations General Assembly’s Expert Working Group provided indicators to measure progress as well as terminologies for these targets in *** around these targets is *** article contributes to the understanding of the targets by exploring:(1) what are the conditions that may hinder achieving targets,as well as those that may accelerate their achievement at the national and local levels;and(2) which types of organizations should lead a country’s effort to reduce disaster deaths?These questions were answered by opinion survey research carried out at the Sixth Session of the Global Platform for Disaster Risk *** participants identified disaster risk reduction efforts,early warning systems,awareness,finance and investment(among others) as the important facilitating factors to achieve targets A and *** investment in human security,lack of response and coordination,uncertainty of climate change,poor information,lack of campaigns and low budget allocation(among others) are considered as the important hindering factors for these targets by the *** findings also suggest that the facilitating and hindering variables of targets A and B are interconnected with global target E(disaster risk governance and capacity building).The majority of the participants thought that it is the national government who should lead in a country’s effort to reduce disaster *** on these findings,a few recommendations have been made to improve policy and practice related to the indicators as well as to reimagine theories so that targets A and B can be realized in alignment with target E at the national and local levels by 2030.

关键词： Disaster deaths Disaster risk reduction Global Platform for Disaster Risk Reduction HealthEDRM Health system Sendai Framework’s targets A and B

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GUSHKA,传统手工的编织故事

艺术与设计 2024年第5期 16-19页

作者： Article 罗迪·克拉克九月(编译) 不详

一门有着100年历史的工艺如何才能变得现代?位于喀尔巴阡山脉的心脏地带,靠近古老的城市科西夫(Kosiv),坐落着GUSHKA——一个基于传统手工艺的现代创意工作室给出了他们的答案。他们的设计一直基于一种在当地备受喜爱但日渐衰落的手工艺... 详细信息

一门有着100年历史的工艺如何才能变得现代?位于喀尔巴阡山脉的心脏地带,靠近古老的城市科西夫(Kosiv),坐落着GUSHKA——一个基于传统手工艺的现代创意工作室给出了他们的答案。他们的设计一直基于一种在当地备受喜爱但日渐衰落的手工艺,工作室的创始人通过应用该地区独特的古老工艺,创造出了一系列当代家居用品,重新点燃了人们对编织的热爱。

关键词：心脏地带传统手工艺家居用品工作室 GUS