检索结果-南通市图书馆

Visual function,performance,and processing of basketball players *** individuals

Journal of Sport and Health Science 2020年第6期9卷 587-594页

作者： Jesús Vera raimundo jiménez David Cárdenas Beatriz Redondo José Antonio García Department of Optics Faculty of ScienceUniversity of GranadaGranada 18071Spain Department of Physical Education and Sport Faculty of Sport ScienceUniversity of GranadaGranada 18071Spain Sport and Health University Mixed Institute University of GranadaGranada 18071Spain

Background:Athletes tend to have better visuo-motor performance than do sedentary ***,several basic visual-function and perceptual parameters remain unexplored to *** this study,we investigated whether differences exist in visual function,performance,and processing between basketball players and individuals without a sport-involvement ***:A total of 33 healthy men with no visual impairment or pathology were divided into 2 groups,depending on the involvement in sport(semi-professional basketball players and sedentary individuals).We tested their baseline heart-rate variability in the resting position apart from subjective questionnaires to determine their physical fitness level,and we checked their visual function,performance,and processing through an extended battery of optometric ***:The 2 groups differed in resting heart-rate variability parameters(p<0.001),confirming their dissimilarities in regular time practising sports per *** basketball players showed a closer breakpoint and recovery nearpoint of convergence,a higher fusional-vergence rate,better discriminability halos,and better eye-hand coordination(all p values<0.05).Conclusion:These results show evidence that athletes,basketball players in this case,exhibit better performance in several visual abilities in comparison to a group of individuals without sporting backgrounds,suggesting an improvement due to the systematic involvement of those skills during basketball practice.

关键词： Exercise Fitness level Health Heart rate variability Visual skills Team sport

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Modeling considerations in seismic assessment of RC bridges using state-of-practice structural analysis software tools

引用

Frontiers of Structural and Civil Engineering 2018年第1期12卷 109-124页

作者： Ricardo MONTEIRO Miguel ARAUJO raimundo DELGADO Mario o MARQUES School of Advanced Studies IUSS Pavia Italy Department of Civil Engineering Faculty of Engineering University of Porto Portugal

The increasing awareness of the general society toward the seismic safety of structures has led to more restrictive performance requirements hence, many times, to the need of using new and more accurate methods of analysis of structures. Among these, nonlinear static procedures are becoming, evermore, the preferred choice of the majority of design codes, as an alternative to complete nonlinear time-history analysis for seismic design and assessment of structures. The many available software tools should therefore be evaluated and well understood, in order to be easily and soundly employed by the practitioners. The study presented herein intends to contribute to this need by providing further insight with respect to the use of commonly employed structural analysis software tools in nonlinear analysis of bridge structures. A comparison between different nonlinear modeling assumptions is presented, together with the comparison with real experimental results. Furthermore, alternative adaptive pushover procedures are proposed and applied to a case study bridge, based on a generic plastic hinge model. The adopted structural analysis program proved to be accurate, yielding reliable estimates, both in terms of local plastic hinge behavior and global structural behavior.

关键词： nonlinear analysis pushover RC bridges structural modelling software

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Changes in potential mammal diversity in national parks and their implications for conservation

引用

Current Zoology 2018年第6期64卷 671-679页

作者： Alba ESTRADA A.Marcia BARBOSA raimundo REAL Biogeography Diversity and Conservation LabDepartment of Animal BiologyUniversidad de MalagaSpain Research Unit of Biodiversity (UMIB UO-CSIC-PA)Oviedo Univ.-Campus MieresSpain CIBIO/InBIO-University of Evora Portugal

Observed species richness (OSR)is a widely used and well-studied biodiversity ***, non-observed species in favorable ecosystems are also *** metrics that include observed and potential species were recently defined:potential biodiversity (hereafter potential species richness--PSR)and geometric mean of favorabilities (GMF).We used these metrics to evaluate the national park network of mainland Spain at two time periods (2002 and 2015),using terrestrial mammals on a UTM 100-km^2 *** and GMF are based on the favorability function, a species distribution model that assesses how favorable an area is for the presence of a species, over and above its prevalence in the study *** each park and for the whole network,we calculated the mean and sum of OSR,PSR,and GMF in each time period,as well as changes between *** and PSR were higher inside than outside the park network in both time periods. Thus,although the network covers a very small proportion of the country,it performs well for the representation of mammal species and their favorable ***,mean PSR was lower in 2015 than in 2002 inside the national park network,whereas the opposite was the case outside the *** Parks generally not only concentrated highly favorable areas for mammals, but they also showed less favorable areas in 2015 compared to 2002,although the reduction was moderate to *** is a result to consider for future analyses because if the tendency increases, it may have consequences for the conservation of mammals and for the adequacy of the national park network.

关键词： conservation planning dark diversity environmental favorability potential biodiversity protected areas

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

PROXIMAL POINT ALGORITHM FOR MINIMIZATION OF DC FUNCTION

引用

Journal of Computational Mathematics 2003年第4期21卷 451-462页

作者： Wen-yuSun raimundo.J.B.Sampaio M.A.B.Candido SchoolofMathematicsandComputerScience NanjingNormalUniversityNanjing2100g7China ProgramadePos-GraduacaoemInformaticaAplicada PontificiaUniversidadeCatolicadoParana(PUCPR)CEP:80215-g01CuritibaPRBrazil ProgramadePos-GraduacaoemInformaticaAplicada PontificiaUniversidadeCatolicadoParana(PUCPR)CEP:80215-g01CuritibaPRBrazil

In this paper we present some algorithms for minimization of DC function (difference of two convex functions). They are descent methods of the proximal-type which use the convex properties of the two convex functions separately. We also consider an approximate proximal point algorithm. Some properties of the ε-subdifferential and the ε-directional derivative are discussed. The convergence properties of the algorithms are established in both exact and approximate forms. Finally, we give some applications to the concave programming and maximum eigenvalue problems.

关键词： Nonconvex optimization Nonsmooth optimization DC function Proximal point algorithm ε-subgradient.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Application of a biochemical and clinical model to predict individual survival in patients with end-stage liver disease

引用

World Journal of Gastroenterology 2009年第22期15卷 2768-2777页

作者： Eduardo Vilar Gomez Luis Calzadilla Bertot Bienvenido Gra Oramas Enrique Arus Soler raimundo Llanio Navarro Javier Diaz Elias Oscar Villa jiménez Maria del Rosario Abreu Vazquez Department of Hepatology National Institute of Gastroenterology Department of Pathology National Institute of Gastroenterology Department of Gastroenterology National Institute of Gastroenterology Deparment of Gastroenterology The"Calixto Garcia"Hospital Department of Biostatistics National Institute of Gastroenterology

AIM:To investigate the capability of a biochemical and clinical model,BioCliM,in predicting the survival of cirrhotic ***:We prospectively evaluated the survival of 172 cirrhotic *** model was constructed using clinical(ascites,encephalopathy and variceal bleeding) and biochemical(serum creatinine and serum total bilirubin) variables that were selected from a Cox proportional hazards *** was applied to estimate 12-,52-and 104-wk *** model's calibration using the Hosmer-Lemeshow statistic was computed at 104 wk in a validation ***,the model's validity was tested among an independent set of 85 patients who were stratified into 2 risk groups(low risk≤8 and high risk>8).RESULTS:In the validation cohort,all measures of fi t,discrimination and calibration were improved when the biochemical and clinical model was *** proposed model had better predictive values(c-statistic:0.90,0.91,0.91) than the Model for End-stage Liver Disease(MELD) and Child-Pugh(CP) scores for 12-,52-and 104-wk mortality,*** addition,the Hosmer-Lemeshow(H-L) statistic revealed that the biochemical and clinical model(H-L,4.69) is better calibrated than MELD(H-L,17.06) and CP(H-L,14.23).There were no significant differences between the observed and expected survival curves in the stratified risk groups(low risk,P=0.61;high risk,P=0.77).CONCLUSION:Our data suggest that the proposed model is able to accurately predict survival in cirrhotic patients.

关键词： Liver cirrhosis Prognosis Statistical models Prognostic factors Model for end-stage liver disease score Child-Pugh score Survival

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nonmonotone adaptive trust region method based on simple conic model for unconstrained optimization

引用

Frontiers of Mathematics in China 2014年第5期9卷 1211-1238页

作者： Lijuan ZHAO Wenyu SUN raimundo J. B. de SAMPAIO School of Mathematical Sciences Jiangsu Key Laboratory for NSLSCS Nanjing Normal University Nanjing 210023 China Department of Social Science Teaching Nanjing Institute of Railway Technology Nanjing 210031 China PPGEPS Pontifical Catholic University of Parana (PUCPR) Curitiba Parana Brazil

We propose a nonmonotone adaptive trust region method based on simple conic model for unconstrained optimization. Unlike traditional trust region methods, the subproblem in our method is a simple conic model, where the Hessian of the objective function is approximated by a scalar matrix. The trust region radius is adjusted with a new self-adaptive adjustment strategy which makes use of the information of the previous iteration and current iteration. The new method needs less memory and computational efforts. The global convergence and Q-superlinear convergence of the algorithm are established under the mild conditions. Numerical results on a series of standard test problems are reported to show that the new method is effective and attractive for large scale unconstrained optimization problems.

关键词： Nonmonotone technique conic model trust region method largescale optimization global convergence

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Islet amyloid polypeptide & amyloid beta peptide roles in Alzheimer’s disease:two triggers, one disease

引用

Neural Regeneration Research 2021年第6期16卷 1127-1130页

作者： Sofia Ferreira Ana F.raimundo Regina Menezes Ivo C.Martins iBET-Instituto de Biologia Experimental e Tecnológica OeirasPortugal CEDOC-Chronic Diseases Research Center Faculdade de Ciências MédicasUniversidade Nova de LisboaLisboaPortugal ITQB-NOVA Instituto de Tecnologia Química e Biológica António XavierUniversidade Nova de LisboaOeirasPortugal Instituto de Medicina Molecular Faculdade de MedicinaUniversidade de LisboaLisbonPortugal

Alzheimer’s disease(AD)is a neurodegenerative disorder that affects millions *** to population ageing,the incidence of AD is *** patients develop cognitive decline and dementia,features for which is known,requiring permanent *** poses a major socio-economic burden on healthcare systems as AD patients’relatives and healthcare workers are forced to cope with rising numbers of affected *** recent advances,AD pathological mechanisms are not fully ***,it is clear that the amyloid beta(Aβ)peptide,which forms amyloid plaques in AD patients’brains,plays a key *** 2 diabetes,the most common form of diabetes,affects hundreds of million people *** amyloid polypeptide(IAPP)is a hormone coproduced and secreted with insulin in pancreatic β-cells,with a key role in diabetes,as it helps regulate glucose levels and control adiposity and *** to Aβ,IAPP is very amyloidogenic,generating intracellular amyloid deposits that causeβ-cell dysfunction and *** is now clear that IAPP can also have a pathological role in AD,decreasing cognitive *** harms the blood-brain barrier,directly interacts and co-deposits with Aβ,promoting diabetes-associated *** can cause a metabolic dysfunction in the brain,leading to other diabetes-related forms of ***,here we discuss IAPP association with diabetes,Aβand dementia,in the context of what we designate a“diabetes brain phenotype”AD *** approach helps to set a conceptual framework for future IAPP-based drugs against AD.

关键词： aggregation Alzheimer amylin amyloid diabetes islet amyloid polypeptide

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ventricular repolarization markers for predicting malignant arrhythmias in clinical practice

引用

World Journal of Clinical Cases 2015年第8期3卷 705-720页

作者： Yaniel Castro-Torres raimundo Carmona-Puerta Richard E Katholi Facultad de Medicina Universidad de Ciencias Médicas Dr.Serafín Ruiz de Zárate Ruiz Cardiocentro Ernesto Che Guevara Southern Illinois University School of Medicine and Prairie Cardiovascular Consultants

Malignant cardiac arrhythmias which result in sudden cardiac death may be present in individuals apparently healthy or be associated with other medical conditions. The way to predict their appearance represents a challenge for the medical community due to the tragic outcomes in most cases. In the last two decades some ventricular repolarization(VR) markers have been found to be useful to predict malignant cardiac arrhythmias in several clinical conditions. The corrected QT, QT dispersion, Tpeak-Tend, Tpeak-Tend dispersion and Tp-e/QT have been studied and implemented in clinical practice for this purpose. These markers are obtained from 12 lead surface electrocardiogram. In this review we discuss how these markers have demonstrated to be effective to predict malignant arrhythmias in medical conditions such as long and short QT syndromes, Brugada syndrome, early repolarization syndrome, acute myocardial ischemia, heart failure, hypertension, diabetes mellitus, obesity and highly trained athletes. Also the main pathophysiological mechanisms that explain the arrhythmogenic predisposition in these diseases and the basis for the VR markers are discussed. However, the same results have not been found in all conditions. Further studies are needed to reach a global consensus in order to incorporate these VR parameters in risk stratification of these patients.

关键词： Electrocardiographic predictor Ventricular repolarization markers Ventricular fibrillation Sudden cardiac death QT interval Corrected QT interval QT dispersion Tpeak-Tend interval Tpeak-Tend QT ratio

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Performance of masonry enclosure walls:lessons learned from recent earthquakes

引用

Earthquake Engineering and Engineering Vibration 2012年第1期11卷 23-34页

作者： Romeu Silva Vicente Hugo Rodrigues Humberto Varum Aníbal Costa Jos António raimundo Mendes da Silva University of Aveiro Civil Engineering Department Campus Universitario de SantiagoAveiroPT3810-193Portugal University of Coimbra Civil Engineering Pinhal de MarrocosPolo ⅡCoimbraPT3030Portugal

This paper discusses the issue of performance requirements and construction criteria for masonry enclosure and infill walls. Vertical building enclosures in European countries are very often constituted by non-load-bearing masonry walls, using horizontally perforated clay bricks. These walls are generally supported and confined by a reinforced concrete frame structure of columns and beams/slabs. Since these walls are commonly considered to be nonstructural elements and their influence on the structural response is ignored, their consideration in the design of structures as well as their connection to the adjacent structural elements is frequently negligent or insufficiently detailed. As a consequence, nonstructural elements, as for wall enclosures, are relatively sensitive to drift and acceleration demands when buildings are subjected to seismic actions. Many international standards and technical documents stress the need for design acceptability criteria for nonstructural elements, however they do not specifically indicate how to prevent collapse and severe cracking, and how to enhance the overall stability in the case of moderate to high seismic loading. Furthermore, a review of appropriate measures to improve enclosure wall performance and both in-plane and out-of-plane integrity under seismic actions is addressed.

关键词： RC structures masonry enclosure walls infill walls in-plane out-of-plane cracking performanceimprovement

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Neutropenic Fever in Lung Cancer:Clinical Aspects Related to Mortality and Antibiotic Failure

引用

中国肺癌杂志 2021年第11期24卷 764-769页

作者： Inês RODRIGUES Luísa NASCIMENTO Ana Cláudia PIMENTA Sara raimundo Bebiana CONDE Ana FERNANDES Pulmonology Department Centro Hospitalar Trás-os-Montes e Alto DouroVila RealPortugal

Background and objectives:Lung cancer(LC)is the leading cause of cancer *** treated with chemotherapy are at risk of developing chemotherapy-induced febrile neutropenia(FN),a potentially life-threatening *** aims of this study were(1)to characterize FN admissions of patients with LC in a pulmonology department,and(2)to determine associations between patient profiles,first-line antibiotic failure(FLAF)and ***:Retrospective observational case-series,based on the analysis of medical records of LC patients that required hospitalization due to chemotherapy-induced ***:A total of 42 cases of FN were revised,corresponding to 36 patients,of which 86.1%were male,with a mean age of 66.71±9.83 *** patients had a performance status(PS)equal or less than 1,and metastatic disease was present in 40.5%(n=17).Respiratory tract infections accounted for 42.9%(n=18)of FN cases,and multidrug-resistant Staphylococcus aureus was the most isolated *** mortality rate was 16.7%(n=7),and the FLAF was 26.2%(n=11).Mortality was associated with a PS≥2(P=0.011),infection by a Gram-negative agent(P=0.001)and severe anemia(P=0.048).FLAF was associated with longer hospitalizations(P=0.020),PS≥2(P=0.049),respiratory infections(P=0.024),and infection by a Gram-negative(P=0.003)or multidrug-resistant agent(P=0.014).Conclusions:Lower PS,severe anemia,and infections by Gram-negative or multi-resistant agents seem to be associated with worse outcomes in FN patients.

关键词： Febrile neutropenia First-line antibiotic failure Lung neoplasms Mortality

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：