检索结果-南通市图书馆

少有人走的路

引用

作者： (美)m. 斯科特·派克(m. scott Peck)

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

少有人走的路

引用

作者： (美)m. 斯科特·派克(m. scott Peck)

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

少有人走的路

引用

作者： (美)m. 斯科特·派克(m. scott Peck)

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

少有人走的路

引用

作者： (美)m.斯科特·派克(m. scott Peck)

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

少有人走的路

引用

作者： (美)m. 斯科特·派克(m. scott Peck)

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

少有人走的路

引用

作者： (美)m.斯科特·派克(m. scott Peck)

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

Effects of N on Plant Response to Heat-wave:A Field Study with Prairie Vegetation

引用

Journal of Integrative Plant Biology 2008年第11期50卷 1416-1425页

作者： Dan Wang scott A. Heckathorn Kum.r m.inali E. William.Ham.lton Departm.nt of Environm.ntal Sciences University of Toledo Toledo Ohio 43606 USA Departm.nt of Biology Washington and Lee University Lexington Virginia 24450 USA

m.re intense, m.re frequent, and longer heat-waves are expected in the future due to global warm.ng, which could have dram.tic ecological im.acts. Increasing nitrogen （N） availability and its dynam.cs will likely im.act plant responses to heat stress and carbon （C） sequestration in terrestrial ecosystem.. This field study exam.ned the effects of N availability on plant response to heat-stress （HS） treatm.nt in naturally-occurring vegetation. HS （5 d at am.ient or 40.5 ℃） and N treatm.nts （±N） were applied to 16 1 m.2 plots in restored prairie vegetation dom.nated by Andropogon gerardii （warm.season C4 grass） and Solidago canadensis （warm.season C3 forb）. Before, during, and after HS, air, canopy, and soil tem.erature were m.nitored; net CO2 assim.lation （Pn）, quantum.yield of photosystem.Ⅱ （ФpsⅡ）, stom.tal conductance （gs）, and leaf water potential （ψw） of the dom.nant species and soil respiration （Rsoll） of each plot were m.asured daily during HS. One week after HS, plots were harvested, and C% and N% were determ.ned for rhizosphere and bulk soil, and above-ground tissue （green/senescent leaf, stem. and flower）. Photosynthetic N-use efficiency （PNUE） and N resorption rate （NRR） were calculated. HS decreased Pn, gs, ψw, and PNUE for both species, and ＋N treatm.nt generally increased these variables （±HS）, but often slowed their post-HS recovery. Aboveground biom.ss tended to decrease with HS in both species （and for green leaf m.ss in S. canadensis）, but decrease with ＋N for A. gerardii and increase with ＋N for S. canadensis. For A. gerardii, HS tended to decrease N% in green tissues with ＋N, whereas in S. canadensis, HS increased N% in green leaves. Added N decreased NRR for A. gerardii and HS increased NRR for S. canadensis. These results suggest that heat waves, though transient, could have significant effects on plants, com.unities, and ecosystem.N cycling, and N can influence the effect of heat waves.

关键词： global clim.te change heat stress N resorption rate photosynthesis photosynthetic N-use efficiency.

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

The im.ortance of household com.osition in epidem.ological analyses of sleep: Evidence from.the Understanding Society longitudinal panel survey

引用

Open Journal of Epidem.ology 2014年第1期4卷 46-55页

作者： Helen Fowler George T. H. Ellison Eleanor m. scott Graham.R. Law Tem.oral Influences on m.tabolic Events (TIm.) Research Group Division of Epidemiology and Biostatistics Leeds Institute of Genetics Health and Therapeutics (LIGHT) University of Leeds Leeds UK

Aim.: To establish the relationship between household com.osition and sleep, we: 1) used latent class analysis (LCA) to classify households;2) exam.ned the reliability and stability of household com.osition classes over tim.;3) conducted m.ltinom.al logistic regression analyses to determ.ne the relationship between household class and the self-reported sleep duration and quality of adults. m.thods: Data were sourced from.Waves 1 and 2 of the United Kingdom.“Understanding Society” (USoc) longitudinal panel survey. LCA was used to classify household com.osition as a categorical latent construct using data on the num.er and ages of household occupants and the num.er of room. used for sleeping. The Bayesian Inform.tion Criterion assessed m.del fit and identified the optim.m.num.er of latent classes. m.lti-nom.al logistic regression was used to investigate cross-sectional relationships between the household classes and self-reported sleep duration and quality am.ngst adults, after adjustm.nt for confounders. Results: Household com.osition was best defined by 7 latent classes in data from.Wave 1 of USoc. This finding was confirm.d in Wave 2. Com.ared to the reference class (households with no children and no overcrowding), there was a higher risk of short sleep (≤5 hours) versus 7-8 hours sleep for latent household com.osition classes that included children (RR: 1.56;95% CI: 1.29-1.89) and for those with both children and overcrowding (RR: 1.57;95% CI: 1.31-1.88). Sim.larly the risk of “very bad” versus “fairly good” quality sleep was significantly higher in those household classes with overcrowding, particularly those with extended (RR: 1.75;95% CI: 1.34-2.29) and large (RR: 1.51;95% CI: 1.21-1.87) households. Conclusion: These analyses of a recent, nationally representative cohort from.the UK, dem.nstrated that latent household com.osition classes are reliable over tim.;and that these latent household com.osition classes are im.ortant correlates of self-reported sleep a

关键词： Latent Class Analysis Household Com.osition Children Overcrowding Sleep

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

Integration of expression profiles and endo-phenotypes in genetic association studies: A Bayesian approach to determ.ne the path from.gene to disease

引用

Open Journal of Genetics 2013年第3期3卷 216-223页

作者： Sharon m. Lutz Sunita Sharm. John E. Hokanson scott Weiss Benjam.n Raby Christoph Lange Departm.nt of Biostatistics Harvard School of Public Health Boston USA Departm.nt of Epidem.ology University of Colorado at Denver Aurora USA Institute for Genom.c m.them.tics University of Bonn Bonn Germany The Channing Division of Network m.dicine Department of Medicine Bringham and Women’s Hospital Boston USA

In genetic association studies of com.lex diseases, endo-phenotypes such as expression profiles, epigenetic data, or clinical interm.diate-phenotypes provide insight to understand the underlying biological path of the disease. In such situations, in order to establish the path from.the gene to the disease, we have to decide whether the gene acts on the disease phenotype prim.rily through a specific endo-phenotype or whether the gene influences the disease through an unidentified path which is characterized by different interm.diate phenotypes. Here, we address the question that a genetic locus, given its effect on an endo-phenotype, influences the trait of interest prim.rily through the path of the endo-phenotype. We propose a Bayesian approach that can evaluate the genetic association between the genetic locus and the phenotype of interest in the presence of the genetic effect on the endo-phenotype. Using sim.lation studies, we verify that our approach has the desired properties and com.are this approach with a m.diation approach. The proposed Bayesian approach is illustrated by an application to genom.-wide association study for childhood asthm. (CAm.) that contains expression profiles.

关键词： Expression Profiles Endo-Phenotypes Genetic Association Studies Bayesian Hierarchal m.del Pathway m.diation

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

Influence of towing speed on effectiveness of rolling dynam.c com.action

引用

Journal of Rock m.chanics and Geotechnical Engineering 2020年第1期12卷 126-134页

作者： Brendan T.scott m.rk B.Jaksa Peter W.m.tchell School of Civil Environmental and Mining EngineeringThe University of AdelaideSouth Australia5005Australia Aurecon AdelaideSouth Australia5000Australia

The influence of towing speed on the effectiveness of the 4-sided im.act roller using earth pressure cells(EPCs)is *** field trials were undertaken;the first trial used three EPCs placed at varying depths between 0.5 m.and 1.5 m.with towing speeds of 9-12 km.*** second used three EPCs placed at a uniform.depth of 0.8 m.with towing speeds of 5-15 km.*** findings from.the two trials confirm.d that towing speed influences the pressure im.arted to the ground and hence com.active *** paper proposes that the energy im.arted to the ground is best described in term. of work done,which is the sum.of the change in both potential and kinetic *** practice of using either kinetic energy or gravitational potential energy should be avoided as neither can accurately quantify rolling dynam.c com.action(RDC)when towing speed is varied.

关键词： Rolling dynam.c com.action(RDC) Optim.m towing speed Ground im.rovem.nt

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

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

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：