检索结果-南通市图书馆

A critical literature review of bioretention research for stormwater management in cold climate and future research recommendations

引用

Frontiers of Environmental Science & Engineering 2017年第4期11卷 23-37页

作者： Hannah Kratky Zhan Li Yijun Chen Chengjin Wang Xiangfei Li Tong Yu Department of Civil and Environmental Engineering University of Alberta Edmonton Alberta T6G 1H9 Canada city Planning City of Edmonton Edmonton Alberta T5J 0J4 Canada

Bioretention is a popular best management practice of low impact development that el/ecUvely restores urban hydrologic characteristics to those ofpredevelopment and improves water quality prior to conveyance to surface waters. This is achieved by utilizing an engineered system containing a surface layer of mulch, a thick soil media often amended with a variety of materials to improve water oualitv, a variety of vegetation, and underdrains, depending on the surrounding soil *** systems have been studied quite extensively for warm climate applications, but ctata strongly supporting their long-tema efficacy and application in cold climates is sparse. Although it is apparent that biorelention is an effective stormwater management system, its design in cold climate needs further research. Existing cold climate research has shown that coarser media is required to prevent concrete frost from forming. For spring, summer and fall seasons, if sufficient permeability exists to drain the system prior to freezing, peak flow and volume reduction can be maintained. Additionally. contaminants that are removed via filtration are also not impacted by cold climates. In contrary, dissolved contaminants, nutrients, and organics are significantly more variable in their ability to be removed or degraded via bioretention in colder temperatures. Winter road maintenance salts have been shown to negatively impact the removal of some contaminants and positively impact others, while their effects on properly selected vegetation or bacteria health are also not well understood. Research in these water quality aspects has been inconsistent and therefore requires further study.

关键词： Bioretention Cold climate Low impact development Stormwater

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

DEVELOPING MUNICIPAL POLICY AND PROGRAMS TO ACCELERATE MARKET TRANSFORMATION IN THE BUILDING SECTOR

引用

Journal of Green Building 2012年第4期7卷 46-61页

作者： Mike Mellross Bud Fraser Sustainable Development City of Edmonton Golder Associates Ltd

edmonton’s cold climate and strong economic connections to the energy sector have made energy vital to the city’s quality of *** fossil fuel industry has helped the city’s economy grow and edmonton boasts one of the lowest unemployment rates in Canada at just over four *** edmonton’s economic prosperity does not shelter it from the realities of global environmental *** like other jurisdictions,climate change and the possibility of future energy constraints means that edmonton must reevaluate its sources and use of energy across all sectors,including its *** this end,on June 20,2012,the edmonton city Council approved the Green Building Plan and Policy,designed to help accelerate the greening of edmonton’s building *** policy outlines the strong role the city of edmonton can play in supporting a green building sector to improve the environmental,health,and socioeconomic performance of all existing and new commercial,institutional,industrial,mixed-use,multifamily residential,and single-family residential buildings in *** policy goes on to provide the mandate for the city to lead and support the delivery of public and industry education campaigns,provide incentives and engage in capacity-building activities,and use its authority in land-use planning and development approvals to help transform the local green building *** Green Building Plan outlines the high-level approach and details a suite of tools and programs that will help edmonton achieve its Green Building *** information and recommendations in the plan are the results of collaboration between the city of edmonton and building industry *** the course of nearly a year,from the autumn of 2010 to the autumn of 2011,the city of edmonton coordinated conversations,meetings,and workshops to confirm the case for action,understand market transformation theory and how it could be applied in edmonton,clarify the role of local government,and res

关键词： municipal planning green building policy climate change mitigation building energy mapping residential GHG emissions

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

Computational study of bubbly jets in stagnant water

引用

Journal of Hydrodynamics 2019年第5期31卷 1021-1033页

作者： Yan-xu Wang Ze-gao Yin Wenming Zhang David ZZhu Engineering College Ocean University of ChinaQingdao 266100China Shandong Province Key Laboratory of Ocean Engineering Ocean University of ChinaQingdao 266100China Water Resources Engineer City of EdmontonEdmontonABCanada Department of Civil and Environmental Engineering University of AlbertaEdmontonABCanada

The air-water bubbly jets in a stagnant water are numerically investigated by using a CFD software package with the realizable k-e turbulence *** focus is on the jet evolutionary behaviors in terms of the gas void fraction,the axial water velocity,the turbulent kinetic energy(TKE),the entrainment coefficient,and the momentum and buoyancy fluxes in a wide range of the bubbly jets(with the initial gas volume fractions ranging from 0 to 0.83).The computational results are found generally in good agreement with the experimental results reported in the *** the gas void fraction and the axial water velocity follow the Gaussian distribution in the radial direction as expected,however a double-peak distribution is found for the TKE at some distance away from the *** the increase of the longitudinal distance,their peak values generally are decreased until reaching approximately their terminal *** non-dimensional relations are revealed in both the radial and longitudinal *** potential core and the spreading rates of the bubbly jets are then *** liquid volume flux of the bubbly jets is found to increase almost linearly along the centerline with an entrainment coefficient of *** momentum flux of the bubbly jets increases due to the buoyancy force,and the relative importance of the momentum and buoyancy fluxes is also discussed.

关键词： Bubbly jet gas void fraction axial water velocity turbulent kinetic energy(TKE) flux

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

Analysis and modeling of highway truck traffic volume variations during severe winter weather conditions in Canada

引用

Journal of Modern Transportation 2015年第3期23卷 228-239页

作者： Hyuk-Jae Roh Satish Sharma Prasanta K.Sahu Sandeep Datia city of Regina Faculty of Engineering and Applied Science University of Regina Department of Civil Engineering Birla Institute of Technology Pilani city of edmonton

This paper investigates the impact of cold and snow on daily and hourly truck traffic volume on a primary highway in Alberta, Canada. This research is based on a detailed case study of 5 years of weigh-in-motion data recorded continuously at Leduc site on Highway 2A. Influence of the winter conditions on truck type distribution is examined by classifying trucks into single-unit trucks, single-trailer, and multi-trailer units. It is evident from the study that proportion of the three truck classes in the total truck traffic remained essentially stable over the study period （2005-2009）. Dummy-variable regression models are used to relate daily and hourly truck traffic volume with snowfall and categorized cold as independent variables. The statistical significance of all the independent variables used in the model is established by conducting tests such as R2, F test, incremental F test, and t test. The study results suggested that the truck volume is not significantly affected by the normal snowfall or the typical cold temperatures, i.e., average daily snowfall about less than 15 cm or temperatures higher than -25 ℃ are not likely to affect the truck traffic patterns. It is believed that the findings of this study can benefit highway agencies in developing programs and policies for efficient monitoring of truck traffic throughout the year and snow removal during the winter season in Canada.

关键词： Truck traffic ·Snowfall · Cold temperature ·Weather·Alberta· Canada

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

Fast capture and stabilization of Li‐ions via physicochemical dual effects for an ultra‐stable self‐supporting Li metal anode

引用

Carbon Energy 2023年第9期5卷 88-100页

作者： Xuzi Zhang Yue Li Hao Zhang Ge Li Department of Mechanical Engineering University of AlbertaEdmontonAlbertaCanada Department of Chemical and Materials Engineering University of AlbertaEdmontonAlbertaCanada

Lithium(Li)metal is regarded as one of the most promising anode candidates for next-generation batteries due to its extremely high specific capacity and low redox ***,its application is still hindered by the uncontrolled growth of dendritic Li and huge volume fluctuation during *** address these issues,flexible and self-supporting three-dimensional(3D)interlaced Ndoped carbon nanofibers(NCNFs)coated with uniformly distributed 2D ultrathin NiCo_(2)S_(4)nanosheets(denoted CNCS)were designed to eliminate the intrinsic hotspots for Li *** dual effects of CNCS arise from limited surface Li diffusivity with a higher Li affinity,leading to uniform Li nucleation and less random accumulation of Li,as confirmed by ab initio molecular dynamics *** to the unique structure,exchange current density is reduced significantly and metallic Li is further contained within the interspace between the NCNF and NiCo_(2)S_(4)nanosheets,preventing the formation of dendritic *** symmetric cell with a Li/CNCS composite anode shows a long-running lifespan for almost 1200 h,with an exceptionally low and stable overpotential under 1mA cm^(-2)/1 mAh cm^(-2).A full cell coupled with a LiFePO4 cathode at a low N/P ratio of 2.45 shows typical voltage profiles but more significantly enhanced performance than that of a LiFePO4 cathode coupled with a bare Li anode.

关键词： 3D scaffold design Li affinity Li diffusivity Li metal anode long lifespan

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

ON MAXIMUM NORM ESTIMATES FOR RITZ-VOLTERRAPROJECTION WITH APPLICATIONS TO SOME TIME DEPENDENT PROBLEMS

引用

Journal of Computational Mathematics 1997年第2期15卷 159-178页

作者： Y.P. Lin(Department of Mathematics University of Alberta edmonton, Alberta T6G 2G1 Canada) Univerisity of Alberta edmonton 加拿大

The stability in L∞-norm is considered for the Ritz-Volterra projection and some applications are presented in this paper. As a result, point-wise error estimates are established for the finite element approximation for the parabolic integrodifferential equation, Sobolev equations, and a diffusion equation with non-local boundary value problem.

关键词： Math ON MAXIMUM NORM ESTIMATES FOR RITZ-VOLTERRAPROJECTION WITH APPLICATIONS TO SOME TIME DEPENDENT PROBLEMS

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

Molecular dynamics study of water diffusion in an amphiphilic block copolymer with large difference in the blocks＇ glass transition temperatures

引用

Frontiers of Chemical Science and Engineering 2017年第3期11卷 440-447页

作者： Yang Zhou Phillip Choi Department of Chemical and Materials Engineering University of Alberta Edmonton Edmonton AB T6G 1H9 Canada

Isothermal-isobaric molecular dynamics simu- lation was used to study the diffusion mechanism of water in polyurethane-block-poly（N-isopropyl acrylamide）（PU- block-PNIPAm） with a hydrophobic PU/hydrophilic PNIPAm mass ratio of 1.4 to 1 at 298 K and 450 K. Here, the experimental glass transition temperature （Tg） of PU is 243 K while that of PNIPAm is 383 K. Different amounts of water up to 15 wt-% were added to PU-block- PNIPAm. We were able to reproduce the specific volumes and glass transition temperatures （250 K and 390 K） of PU- block-PNIPAm. The computed self-diffusion coefficient of water increased exponentially with increasing water concentration at both temperatures （i.e., following the free volume model of Fujita）. It suggested that water diffusion in PU-block-PNIPAm depends only on its fractional free volume despite the free volume inhomo- geneity. It is noted that at 298 K, PU is rubbery while PNIPAm is glassy. Regardless of temperature, radial distribution functions showed that water formed clusters with sizes in the range of 0.2-0.4 nm in PU-block- PNIPAm. At low water concentrations, more clusters were found in the PU domain but at high water concentrations, more in the PNIPAm domain. It is believed that water molecules diffuse as clusters rather than as individual molecules.

关键词： molecular dynamics simulation amphiphilic block copolymer free volume water diffusivity fujita model

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

Carboxylesterases in lipid metabolism： From mouse to human

引用

Protein & Cell 2018年第2期9卷 178-195页

作者： Jihong Lian Randal Nelson Richard Lehner Group on Molecular and Cell Biology of Lipids University of Alberta Edmonton Alberta Canada Department of Pediatrics University of Alberta Edmonton Alberta Canada Department of Cell Biology University of Alberta Edmonton Alberta Canada

Mammalian carboxylesterases hydrolyze a wide range of xenobiotic and endogenous compounds, including lipid esters. Physiological functions of car- boxylesterases in lipid metabolism and energy home- ostasis in vivo have been demonstrated by genetic manipulations and chemical inhibition in mice, and in vitro through （over）expression, knockdown of expression, and chemical inhibition in a variety of cells. Recent research advances have revealed the relevance of carboxylesterases to metabolic diseases such as obesity and fatty liver disease, suggesting these enzymes might be potential targets for treatment of metabolic disorders. In order to translate pre-clinical studies in cellular and mouse models to humans, dif- ferences and similarities of carboxylesterases between mice and human need to be elucidated. This review presents and discusses the research progress in structure and function of mouse and human car- boxylesterases, and the role of these enzymes in lipid metabolism and metabolic disorders.

关键词： carboxylesterase lipase lipid lipoprotein iver adipose intestine

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

Development of a symptom expectation questionnaire for minor head injury

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第6期12卷 499-502页

作者： Robert FERRARI Deon LOUW Department of Medicine University of AlbertaEdmonton

Background and objective:Expectations and beliefs are important predictors of outcome following minor head *** this paper,the primary purpose is to develop a simple symptom expectation questionnaire for minor head injury for use in future research ***:An existing database of 179 injury-naive subjects who completed a 56-item checklist of expected symptoms for minor head injury was analyzed to determine which items could correctly identify an a priori case definition of an expecter (a subject who expected at least one of these symptoms would remain chronic following minor head injury).A total of six of the 56 items were found to be discriminatory,and these were tested in additional subject groups against the original ***:From the original database of 179 subjects completing a 56-item symptom expectation checklist,135 expected that at least one of the 56 symptoms would be chronic following minor head *** 135 expecters,however,all chose at least one of six items:headache,anxious or worried,depressed,difficulty concentrating,dizziness,and neck *** these six items,in two new groups of subjects,all those who endorsed one of the 56 symptoms as likely to be chronic following minor head injury (expecters) could also be identified on the 6-item ***:A shortened (6-item) symptom expectation checklist of commonly reported symptoms following minor head injury (headache,anxious or worried,depressed,difficulty concentrating,dizziness,and neck pain) correctly identifies subjects who expect that at least one symptom will be chronic following minor head injury (i.e.,an expecter).

关键词： Minor head iniurv Expectation Outcomes

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

Correlation between expectations of recovery and injury severity perception in whiplash-associated disorders

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第8期12卷 683-686页

作者： Robert FERRARI Deon LOUW Department of Medicine University of AlbertaEdmonton

Objective:To assess the correlation between expectations of recovery and whiplash patients' perceptions of injury severity using a simplified *** of recovery have been shown to predict rate of recovery from whiplash injury in population-based *** perception of having more severe pathology or more ominous diagnostic labels has also been associated with a worse ***:Consecutive patients with whiplash-associated disorder grade 1 or 2,presenting in the acute stage to a primary care centre,were asked "do you think that your injury will…" with response options "get better soon;get better slowly;never get better;don't know." Injury severity perception (ISP) was measured with a numerical rating scale which ranged from 0-10,on which subjects were asked to rate how severe (in terms of damage) they thought their injury *** anchors were labeled "no damage" (0) and "severe,and maybe permanent damage" (10).The primary outcome measure was the correlation between the subject's ISP score and expectation of ***:A total of 94 subjects (34 males,60 females,and mean age (40.6±10.0) years,range 19-60 years) were *** initial responses to expectation of recovery were:get better soon (29/94);get better slowly (22/94);never get better (11/94);don't know (32/94).The mean ISP score was 4.9±1.7 (range 2-9 out of 10).There was a high correlation between expectations and ISP scores (Spearman's rank correlation coefficient 0.68).Those who expected to recover soon and those who expected to get better slowly had the lowest ISP ***:The more slowly whiplash patients expect to recover,or the less sure they are of recovery,the more severe their initial perceptions of injury.

关键词： Whiplash-associated disorders (WAD) Expectations of recovery Injury severity perception (ISP)

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：