检索结果-南通市图书馆

A one-step,tunable method of selective reactive sputter deposition as a wrinkling approach for silver/polydimethylsiloxane for electrically conductive pliable surfaces

引用

Microsystems & Nanoengineering 2022年第4期8卷 221-231页

作者： Joel Y.Y.Loh Ali Zeineddine Moein Shayegannia Robyn McNeil liam mcrae Nazir P.Kherani Department of Electrical and Computing Engineering University of TorontoTorontoON M5S 3G4Canada Department of Material Science and Engineering University of TorontoTorontoON M5S 3E4Canada

The wrinkle period and morphology of a metal thin film on an elastic substrate is typically controlled by modifying the substrate before carrying out additional metal deposition ***,we show that a simultaneously selective and reactive sputtering plasma that modifies the surface of a polydimethylsiloxane(PDMS)substrate while not reacting with the metal during the deposition process decreases the wrinkle wavelength and induces additional wrinkling components and features such as ripples or *** selective reaction of the nitrogen plasma with PDMS functionalizes the siloxane surface into silicon *** hardens the immediate surface of PDMS,with a quadratic increase in the Young’s modulus as a function of the sputtering flow *** increase in the critical strain mismatch and the corresponding presence of folds in the nitrogen-modified wrinkled silver film form a suitable plasmonic platform for surface-enhanced Raman spectroscopy(SERS),yielding an enhancement factor of 4.8×105 for detecting *** enhancement is linked to the emergence of electromagnetic hotspots from surface plasmon polariton coupling between the folds/wrinkles,which in turn enables the detection of low concentrations of organics using ***,when strained,the nitrogen-modified wrinkles enhance electrical conductivity by a factor of 12 compared with unmodified ***,the optical properties of the substrate can be tuned by altering the N2 *** simple addition of nonreactive nitrogen to silver sputtering enables simultaneous PDMS hardening and growth of the silver film and together provide a new avenue for tuning wrinkling parameters and enhancing the electrical conductivity of pliable surfaces.

关键词： silver reactive film

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

A general mirror equivalence theorem for coset vertex operator algebras

引用

Science China Mathematics 2024年第10期67卷 2237-2282页

作者： Robert mcrae Yau Mathematical Sciences Center Tsinghua UniversityBeijing 100084China

We prove a general mirror duality theorem for a subalgebra U of a simple conformal vertex algebra A and its commutant V=ComA(U).Specifically,we assume that A≌■_(i∈I)U_(i)■V_(i) as a U■V-module,where the U-modules Uiare simple and distinct and are objects of a semisimple braided ribbon category of Umodules,and the V-modules Viare semisimple and contained in a(not necessarily rigid) braided tensor category of *** also assume U=ComA(V).Under these conditions,we construct a braid-reversed tensor equivalence τ:u_(A)→v_(A),where u_(A)is the semisimple category of U-modules with simple objects Ui,i∈I,and v_(A)is the category of V-modules whose objects are finite direct sums of *** particular,the V-modules Viare simple and distinct,and v_(A)is a rigid tensor *** an application,we find a rigid semisimple tensor subcategory of modules for the Virasoro algebra at central charge 13+6p+6p^(-1),p∈Z_(≥2), which is braided tensor equivalent to an abelian 3-cocycle twist of the category of finite-dimensional ***,the Virasoro vertex operator algebra at central charge 13+6p+6p^(-1)is the PSL_(2)(C)-fixed-point subalgebra of a simple conformal vertex algebra w(-p),analogous to the realization of the Virasoro vertex operator algebra at central charge 13-6p-6p^(-1)as the PSL_(2)(C)-fixed-point subalgebra of the triplet algebra W(p).

关键词： vertex operator algebras coset conformal eld theory braid-reversed tensor equivalence Virasoro algebra

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

An examination of the population dynamics of syngnathid fishes within Tampa Bay,Florida,USA

引用

Current Zoology 2010年第1期56卷 118-133页

作者： Heather D.MASONJONES Emily ROSE Lori Benson mcrae Danielle L.DIXSON Biology Department University of Tampa Biology Department Texas A & M University School of Marine and Tropical Biology James Cook University

Seagrass ecosystems worldwide have been declining, leading to a decrease in associated fish populations, especially those with low mobility such as syngnathids （pipefish and seahorses）. This two-year pilot study investigated seasonal patterns in density, growth, site fidelity, and population dynamics of Tampa Bay （FL） syngnathid fishes at a site adjacent to two marinas under construction. Using a modified mark-recapture technique, fish were collected periodically from three closely located sites that varied in seagrass species （Thalassia spp., Syringodium spp., and mixed-grass sites） and their distance from open water, but had consistent physical/chemical environmental characteristics. Fish were marked, photographed for body size and gender measurements, and released the same day at the capture site. Of the 5695 individuals surveyed, 49 individuals were recaptured, indicating a large, flexible population. Population density peaks were observed in July of both years, with low densities in late winter and late summer. Spatially, syngnathid densities were highest closest to the mouth of the bay and lowest near the shoreline. Seven species of syngnathid fishes were observed, and species-specific patterns of seagrass use emerged during the study. However, only two species, Syngnathus scovelli and Hippoeampus zosterae, were observed at high frequencies. For these two species, body size decreased across the study period, but while S. scovelli＇s population density decreased, H. zosterae＇s increased. Across six of the seven species, population size declined over the course of this preliminary study; however, seasonal shifts were impossible to distinguish from potential anthropogenic effects of construction [Current Zoology 56 （1）： 118-133, 2010].

关键词： Syngnathids Habitat-use Seahorse Pipefish Population density Mark-recapture

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

Fuel characteristics, loads and consumption in Scots pine forests of central Siberia

引用

Journal of Forestry Research 2020年第6期31卷 2507-2524页

作者： Galina A.Ivanova Elena A.Kukavskaya Valery A.Ivanov Susan G.Conard Douglas J.mcrae V.N.sukachev institute of forest sb ras-separate subdivision of the federal research center“krasnoyarsk science center of the siberian branch of the russian academy of sciences” krasnoyarskrussia 660036 M.F.reshetnev siberian state university of science and technology krasnoyarskrussia 660049 Emeritus scientist rocky mountain research stationu.s.forest servicemissoulamt 59807usa George mason university fairfaxvausa Canadian forest service natural resources canada1219 queen street eastsault st5.marieon p6a 2e5canada

Forest fuel investigations in central and southern Siberian taiga of Scots pine forest stands dominated by lichen and feather moss ground vegetation cover revealed that total aboveground biomass varied from 13.1 to 21.0 kg/m *** biomass was higher in plots in the southern taiga,while ground fuel loads were higher in the central *** developed equations for fuel biomass(both aerial and ground)that could be applicable to similar pine forest sites of Central *** loading variability found among plots is related to the impact and recovery time since the last wildfi re and the mosaic distribution of living *** consumption due to surface fi res of low to high-intensities ranged from 0.95 to 3.08 kg/m 2,that is,18–74%from prefi re *** total amount of fuels available to burn in case of fi re was up to 4.5–6.5 kg/m *** content of fuels(litter,lichen,feather moss)was related to weather conditions characterized by the Russian Fire Danger Index(PV-1)and FWI code of the Canadian Forest Fire Weather Index *** data obtained provide a strong foundation for understanding and modeling fi re behavior,emissions,and fi re eff ects on ecosystem processes and carbon stocks and could be used to improve existing global and regional models that incorporate biomass and fuel characteristics.

关键词： Pinus sylvestris Tree biomass Surface and ground fuel loads Fuel moisture Fuel consumption

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

Postoperative deep shoulder infections following rotator cuff repair

引用

World Journal of Orthopedics 2017年第8期8卷 612-618页

作者： Kivanc Atesok Peter MacDonald Jeff Leiter Sheila mcrae Greg Stranges Jason Old Department of Orthopaedic Surgery University of Alabama at Birmingham Sports Medicine and Upper Extremity Reconstruction Fellowship Program Pan Am Clinic Department of Surgery Section of Orthopaedic Surgery University of Manitoba

Rotator cuff repair(RCR) is one of the most commonly performed surgical procedures in orthopaedic surgery. The reported incidence of deep soft-tissue infections after RCR ranges between 0.3% and 1.9%. Deep shoulder infection after RCR appears uncommon, but the actual incidence may be higher as many cases may go unreported. Clinical presentation may include increasing shoulder pain and stiffness, high temperature, local erythema, swelling, warmth, and fibrinous exudate. Generalized fatigue and signs of sepsis may be present in severe cases. Varying clinical presentation coupled with a low index of suspicion may result in delayed diagnosis. Laboratory findings include high erythrocyte sedimentation rate and C-reactive protein level, and, rarely, abnormal peripheral blood leucocyte count. Aspiration of glenohumeral joint synovial fluid with analysis of cell count, gram staining and culture should be performed in all patients suspected with deep shoulder infection after RCR. The most commonly isolated pathogens are Propionibacterium acnes, Staphylococcus epidermidis, and Staphylococcus aureus. Management of a deep soft-tissue infection of the shoulder after RCR involves surgical debridement with lavage and long-term intravenous antibiotic treatment based on the pathogen identified. Although deep shoulder infection after RCR is usually successfully treated, complications of this condition can be devastating. Prolonged course of intravenous antibiotic treatment, extensive soft-tissue destruction and adhesions may result in substantially diminished functional outcomes.

关键词： Rotator cuff repair Deep shoulder infection Shoulder surgery Postoperative complication

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

MANAGING ON PAPER

引用

Chinese Journal of Applied Linguistics 1994年 18卷 172-175页

作者： James Kell and Andrew mcrae

Introduction Spoken instructions are often surprisingly ineffective, especially when in a foreign language and across cultures. With any course, and particularly on ATT courses, there always seems to be a daunting amount of information for trainees to absorb. This paper will outline how Chongqing University attempted to address the procedures and problems of organising a teacher-training course by using what we, rather inaccurately, called "memos". Memos were written by the project team and given to each trainee. They borrowed the style of a newsletter, but in content they resembled, what are called in China, "open letters". They were printed about three times a semester, and usually contained five or six points of information. We intended them to be both informal and businesslike. The word ’memo’ seemed to embody all this so ’memos’ they became. In practice they were longer and more structured than the kind of memo you would leave on somebody’s desk. To illustrate this paper we use both excerpts from memos and statistics and quotations from trainees.

关键词： MANAGING ON PAPER

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

High-throughput discovery of fluoride-ion conductors via a decoupled,dynamic,and iterative(DDI)framework

引用

npj Computational Materials 2022年第1期8卷 983-991页

作者： Jack D.Sundberg Daniel L.Druffel Lauren M.mcrae Matthew G.Lanetti Jacob T.Pawlik Scott C.Warren Department of Chemistry The University of North Carolina at Chapel HillChapel HillNC27599United States

Fluoride–ion batteries are a promising alternative to lithium–ion batteries with higher theoretical capacities and working voltages,but they have experienced limited success due to the poor ionic conductivities of known electrolytes and ***,we report a high-throughput computational screening of 9747 fluoride-containing materials in search of fluoride-ion *** a combination of empirical,lightweight DFT,and nudged elastic band(NEB)calculations,we identified>10 crystal systems with high fluoride *** applied a search strategy where calculations are performed in any order(decoupled),computational resources are reassigned based on need(dynamic),and predictive models are repeatedly updated(iterative).Unlike hierarchical searches,our decoupled,dynamic,and iterative framework(DDI)began by calculating high-quality barrier heights for fluoride-ion mobility in a large and diverse group of *** high-quality dataset provided a benchmark against which a rapid calculation method could be *** accurate method was then used to measure the barrier heights for 6797 fluoride–ion *** final dataset has allowed us to discover many fascinating,high-performance conductors and to derive the design rules that govern their *** materials will accelerate experimental research into fluoride–ion batteries,while the design rules will provide an improved foundation for understanding ionic conduction.

关键词： fluoride dynamic repeatedly

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

Future impacts of climate change on forest fire danger in northeastern China

引用

Journal of Forestry Research 2011年第3期22卷 437-446页

作者： TIAN Xiao-rui SHU Li-fu ZHAO Feng-jun WANG Ming-yu Douglas J. mcrae State Forestry Administration＇s Key Open Laboratory of Forest Protec- tion Research Institute of Forest Ecology Environment and Protection Chinese Academy of Forestry Beijing 100091. Natural Resources Canada Canadian Forest Service 1219 Queen St. E.Sault Ste. Marie Ontario P6A 2E5.

Climate warming has a rapid and far-reaching impact on forest fire management in the boreal forests of China. Regional climate model outputs and the Canadian Forest Fire Weather Index （FWI） Sys- tem were used to analyze changes to fire danger and the fire season for future periods under IPCC Special Report on Emission Scenarios （SRES） A2 and B2, and the data will guide future fire management planning. We used regional climate in China （1961 1990） as our validation data, and the period （1991–2100） was modeled under SRES A2 and B2 through the weather simulated by the regional climate model system （PRECIS）. Meteorological data and fire danger were interpolated to 1 km 2 by using ANUSPLIN software. The average FWI value for future spring fire sea- sons under Scenarios A2 and B2 shows an increase over most of the region. Compared with the baseline, FWI averages of spring fire season will increase by 0.40, 0.26 and 1.32 under Scenario A2, and increase by 0.60, 1.54 and 2.56 under Scenario B2 in 2020s, 2050s and 2080s, respectively. FWI averages of autumn fire season also show an increase over most of the region. FWI values increase more for Scenario B2 than for Scenario A2 in the same periods, particularly during the 2050s and 2080s. Average future FWI values will increase under both scenarios for autumn fire season. The potential burned areas are expected to increase by 10% and 18% in spring for 2080s under Scenario A2 and B2, respectively. Fire season will be prolonged by 21 and 26 days under ScenariosA2 and B2 in 2080s respectively.

关键词： climate change fire season forest fire danger northeastern China

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

绿僵菌感染白蚁生物测定新方法

引用

植物保护学报 1994年第4期21卷 356-356,362页

作者：刘作易 C.F.mcrae 贵州农学院贵阳550025 澳大利亚联邦科学及工业研究组织昆虫所

白蚁是世界性害虫。不少种类对森林、房屋建筑、电讯设备、水库土坝等造成严重危害。利用金龟子绿僵菌(Metarhizium anisopliae)防治白蚁,已有不少研究。本文提出绿僵菌感染白蚁生物测定新方法,比以往的方法更省时。试验以象白蚁(Nasuti... 详细信息

白蚁是世界性害虫。不少种类对森林、房屋建筑、电讯设备、水库土坝等造成严重危害。利用金龟子绿僵菌(Metarhizium anisopliae)防治白蚁,已有不少研究。本文提出绿僵菌感染白蚁生物测定新方法,比以往的方法更省时。试验以象白蚁(Nasutitermes exitiosus)作供试昆虫,但也适用于对其它白蚁的研究。

关键词：绿僵菌白蚁生物测定防治

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

森林火险等级预报系统评述

引用

世界林业研究 2006年第2期19卷 39-46页

作者：田晓瑞 Douglas J mcrae 张有慧中国林业科学研究院森林生态环境与保护研究所国家林业局森林保护学重点实验室北京100091 加拿大林务局大湖林业中心山东省冠县苗圃山东冠县252525

对当前世界上主要的森林火险等级系统进行了综述,包括加拿大、美国、澳大利亚以及其他一些国家的森林火险等级系统。对主要森林火险等级系统的组成、结构和发展过程进行了比较,讨论了这些系统应用的局限性。比较了世界上3个应用比较普... 详细信息

对当前世界上主要的森林火险等级系统进行了综述,包括加拿大、美国、澳大利亚以及其他一些国家的森林火险等级系统。对主要森林火险等级系统的组成、结构和发展过程进行了比较,讨论了这些系统应用的局限性。比较了世界上3个应用比较普遍的森林火险等级系统的发展、可燃物类型、输入因子、输出因子和应用范围,认为发展中国的森林火险等级系统采用加拿大的森林火险等级系统(CFFDRS)的技术比较合适。我们可直接应用CFFDRS,然后根据当地气候和可燃物类型对火险等级系统进行校正。

关键词：森林火险火险等级系统评述可燃物类型

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：