检索结果-南通市图书馆

Response of revegetation to climate change with meso- and micro-scale remote sensing in an arid desert of China

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

Research in Cold and Arid Regions 2021年第1期13卷 43-52页

作者： Guang Song BingYao Wang jingyao sun YanLi Wang XinRong Li Shapotou Desert Research and Experimental Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of ScienceLanzhouGansu 730000China Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China University of Chinese Academy of Sciences Beijing 100049China

The revegetation protection system(VPS)on the edge of the Tengger Desert can be referred to as a successful model of sand control technology in China and even the world,and there has been a substantial amount of research on revegetation ***,it is unclear how meso-and micro-scale revegetation activity has responded to climatic change over the past *** evaluate the relative influence of climatic variables on revegetation activities in a restored desert ecosystem,we analysed the trend of revegetation change from 2002 to 2015 using a satellite-derived normalized difference vegetation index(NDVI)*** time series of the NDVI data were decomposed into trend,seasonal,and random components using a segmented regression *** results of the segmented regression model indicate a changing trend in the NDVI in the VPS,changing from a decrease(−7×10−3/month)before 2005 to an increase(0.3×10−3/month)after *** found that precipitation was the most important climatic factor influencing the growing season NDVI(P<0.05),while vegetation growth sensitivity to water and heat varied significantly in different *** the case of precipitation reduction and warming in the study area,the NDVI of the VPS could still maintain an overall slow upward trend(0.04×10−3/month),indicating that the ecosystem is *** findings suggest that the VPS has been successful in maintaining stability and sustainability under current climate change conditions and that it is possible to introduce the VPS in similar areas as a template for resistance to sand and drought hazards.

关键词： vegetation activity climate change NDVI trend restored ecosystem meso-and micro-scale

Surface microstructure-controlled ZrO_(2) for highly sensitive room-temperature NO2 sensors

在线全文

学校读者我要写书评

暂无评论

Nano Materials Science 2021年第3期3卷 268-275页

作者： Yuhua Yan Zongtao Ma jingyao sun Miaomiao Bu Yanming Huo Ziying Wang Yunfei Li Ning Hu Tianjin Key Laboratory of Electronic Materials and Devices School of Electronics and Information EngineeringHebei University of Technology5340 Xiping RoadTianjin300401PR China State Key Laboratory of Reliability and Intelligence Electrical Equipment Hebei University of TechnologyTianjin300130PR China National Engineering Research Center for Technological Innovation Method and Tool And School of Mechanical EngineeringHebei University of TechnologyTianjin300401PR China Center for Advanced Laser Technology Hebei University of TechnologyTianjin300401PR China Hebei Key Laboratory of Advanced Laser Technology and Equipment Tianjin300401PR China

The high sensitivity of room-temperature gas sensors is the key to innovation in the areas of environment,energy conservation and ***,metal-oxide-based sensors generally operate at high ***,we designed three ZrO_(2)-based sensors and explored their NO_(2)sensing properties at room ***_(2)with three different morphologies and microstructure were synthesized by simple hydrothermal *** microstructures of sensing materials are expected to significantly affect gas sensing *** rod-shaped ZrO_(2)(ZrO_(2)-R)displayed the advantages such as higher crystallinity,larger pore size,narrower band gap and more chemisorbed adsorbed oxygen,compared to hollow sphere-shaped ZrO_(2)(ZrO_(2)-HS),stellate-shaped ZrO_(2)(ZrO_(2)–S).The ZrO_(2)-R sensor showed the highest response towards 30 ppm NO_(2)(423.8%)at room temperature,and a quite high sensitivity of 198.0%for detecting 5 ppm NO_(2).Although ZrO_(2)-HS and ZrO_(2)–S sensors exhibited lower response towards 30 ppm NO_(2)(232.9%and 245.1%),the response time and recovery time of these two sensors are 5 s/19 s and 4 s/3 s,*** work can provide a new strategy for the development of roomtemperature metal-oxide-based sensors.

关键词： ZrO_(2) Room temperature Microstructure Chemisorbed adsorbed oxygen NO_(2)

Recyclable thermally conductive poly(butylene adipate-co-terephthalate)composites prepared via forced infiltration

在线全文

学校读者我要写书评

暂无评论

SusMat 2023年第3期3卷 345-361页

作者： Chenglin Li Yi Han Qingyuan Du Daming Wu jingyao sun Zhao Wang Liqun Zhang State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijingChina College of Mechanical and Electrical Engineering Beijing University of Chemical TechnologyBeijingChina Beijing Engineering Research Center of Advanced Elastomers Beijing University of Chemical TechnologyBeijingChina

With the rapid development of electronic equipment and communication technology,the demand for polymer composites with high thermal conductivity and mechanical properties has increased ***,its nondegradable polymer matrix will inevitably bring more and more serious environmental ***,it is urgent to develop biodegradable thermally conductive polymer *** this work,biodegradable poly(butylene adipate-coterephthalate)(PBAT)is used as the matrix material,and vacuum-assisted filtration technology is employed to prepare carbon nanotube(CNT)and cellulose nanocrystal(CNC)networks with high thermal *** CNT-CNC/PBAT composites with high thermal conductivity and excellent mechanical properties are prepared by the ultrasonic-assisted forced infiltration *** experiment and simulation methods are used to systematically investigate the thermally conductive and dissipation performances of the CNT-CNC/PBAT *** all,a simple alcoholysis reaction is applied to realize the separation of the PBAT matrix and functional fillers without destroying the conductive network skeleton,which makes it possible for the recycling of thermally conductive polymer composites.

关键词： forced infiltration poly(butylene adipate-co-terephthalate)matrix recyclable thermal interface material

To Review the History to Serve the Need of Today

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

China & The World Cultural Exchange 2000年第5期66卷 46-47页

作者： sun jingyao

A Comment on Influence of Chinese Culture Upon

关键词： In To Review the History to Serve the Need of Today

Bassnett’s Struggle:With Whom Does She Struggle? For What Does She Struggle?

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

Comparative Literature:East & West 2010年第1期 22-27页

作者： sun jingyao & DUAN Jing School of Literature,Shanghai Normal University

Western comparative literature’s crisis and its prospects have long been a sore point and even a bit of a nightmare for western scholars of comparative literature. In the 20th century,comparative literature struggled with the waves of"theoretical studies"and"the cultural turn",while the beginning of the 21 st century has

关键词：

拷问:比较文学是什么?比较文学“研究”是什么?——对美国比较文学协会新报告的质疑

在线全文

学校读者我要写书评

暂无评论

江汉论坛 2006年第7期 104-105页

作者：孙景尧上海师范大学中文系教授上海200000

比较文学在中国复兴20年来,取得了巨大的成绩和进步,成为中国学术界最活跃的一个学科领域,为全世界比较文学学者所关注,产生了世界性的影响。正如季羡林教授所指出:“以学科而论,在世界范围内,比较文学的兴起是较晚的,在中国则更晚,然... 详细信息

比较文学在中国复兴20年来,取得了巨大的成绩和进步,成为中国学术界最活跃的一个学科领域,为全世界比较文学学者所关注,产生了世界性的影响。正如季羡林教授所指出:“以学科而论,在世界范围内,比较文学的兴起是较晚的,在中国则更晚,然而一旦兴起,就立即显示其活力,转瞬成为世界显学。比较文学若没有中国是残缺不全的。”实际上,全世界的比较文学学科理论已经历了三个阶段:第一阶段在欧洲,第二阶段在北美,第三阶段在亚洲。中国比较文学学科理论的研究,正是这第三阶段的重要成果。然而,这些成果的取得,却并非一帆风顺,而是在各种困境中推进的,是在种种诘难、否定和困惑之中成长起来的,是在持续不断的“危机”声中脱颖而出的。本专栏特就“比较文学学科理论的困惑与进展”这一题目,约请了上海、广东、山东、四川等地的比较文学学者各抒己见,意在找准问题,认清方向,予人启发,促进比较文学学科理论的进一步发展。

关键词：比较文学美国协会耶鲁大学自留地十字架韦勒克学科学者回答

从“关系史”到“方法论”——两本法国比较文学名著比较

在线全文

学校读者我要写书评

暂无评论

上海师范大学学报（哲学社会科学版） 2007年第1期36卷 110-115页

作者：陈可培孙景尧上海师范大学人文与传播学院上海200234

文章以法国比较文学学者基亚的《比较文学》和谢弗雷的《当代比较文学:方法与视野》为研究文本,从两者的目录编排入手,比较了两本书的构架、层次、对比较文学的不同定义、对总体文学的不同理解、对翻译研究的不同角度,从中追溯比较文学... 详细信息

文章以法国比较文学学者基亚的《比较文学》和谢弗雷的《当代比较文学:方法与视野》为研究文本,从两者的目录编排入手,比较了两本书的构架、层次、对比较文学的不同定义、对总体文学的不同理解、对翻译研究的不同角度,从中追溯比较文学这门年轻而开放的学科在几十年间的发展历程,因而阐述了对比较文学的新认识。

关键词：法国比较文学基亚谢弗雷《比较文学》《当代比较文学:方法与视野》

在线全文

学校读者我要写书评

暂无评论

论伊安的口头文学表演实质和柏拉图的误断

上海师范大学学报（哲学社会科学版） 2005年第3期34卷 74-79页

作者：孙景尧夏洁上海师范大学人文与传播学院上海200234

本文以口头文学表演理论,并结合古希腊诵诗表演活动史实,论证了《伊安篇》中的诵诗实是一种口头文学表演艺术,而伊安既具备了集编、导、演于一身的口头文学表演艺人身份,又具有使用阐释性套架作口头文学表演的“技艺”特征。但柏拉图在... 详细信息

本文以口头文学表演理论,并结合古希腊诵诗表演活动史实,论证了《伊安篇》中的诵诗实是一种口头文学表演艺术,而伊安既具备了集编、导、演于一身的口头文学表演艺人身份,又具有使用阐释性套架作口头文学表演的“技艺”特征。但柏拉图在《伊安篇》中,却采用了“代言体”戏剧的“整体诗学”观,使伊安在论辩中“被迫陷入可笑的窘境。”这是柏拉图基于其戏剧模仿说而对伊安口头文学表演作出的误断。

关键词：古希腊诵诗技艺口头文学表演

“垂死”之由、“新生”之路——评斯皮瓦克的《学科之死》

在线全文

学校读者我要写书评

暂无评论

中国比较文学 2007年第3期68卷 1-10页

作者：孙景尧张俊萍上海师范大学中文系、河南大学比较文学与文化研究所上海200234 江南大学外语学院、上海师范大学中文系江苏无锡214000

斯皮瓦克的《学科之死》在西方学界引起了强烈的反响，该书对我们重新审视西方比较文学特别是美国比较文学，尤其是探讨其“垂死”之由、“新生”之路，并进而反思我们的比较文学发展，具有重要的参考意义。本文评介论析了斯皮瓦克观点... 详细信息

斯皮瓦克的《学科之死》在西方学界引起了强烈的反响，该书对我们重新审视西方比较文学特别是美国比较文学，尤其是探讨其“垂死”之由、“新生”之路，并进而反思我们的比较文学发展，具有重要的参考意义。本文评介论析了斯皮瓦克观点的独创之见和不足之处，进而探讨了该书给予我们的思考与启示。

关键词：比较文学全球化星球化知识装备