检索结果-南通市图书馆

Relative importance of long-term changes in climate and land-use on the phenology and abundance of legume crop specialist and generalist aphids

引用

Insect Science 2019年第5期26卷 881-896页

作者： Martin Luquet maurice Hulle Jean-Christophe Simon Nicolas Parisey Christelle Buchard2 Bruno Jaloux Agrocampus Ouest Centre of AngersInstitute of GeneticsEnvironment and Plant Protection (IGEPP-Joint Research Unit 1349) AngersFrance INRA Institute of GeneticsEnvironment and Plant Protection (IGEPP-Joint Research Unit 1349)Le Rheu France

Abstract Insect populations are prone to respond to global changes through shifts in phenology, distribution and abundance. However, global changes cover several factors such as climate and land-use, the relative importance of these being largely unknown. Here, we aim at disentangling the effects of climate, land-use, and geographical drivers on aphid abundance and phenology in France, at a regional scale and over the last 40 years. We used aerial data obtained from suction traps between 1978 and 2015 on five aphid species varying in their degree of specialization to legumes, along with climate, legume crop area and geographical data. Effects of environmental and geographical variables on aphid annual abundance and spring migration dates were analyzed using generalized linear mixed models. We found that within the last four decades, aphids have advanced their spring migration by a month, mostly due to the increase in temperature early in the year, and their abundance decreased by half on average, presumably in response to a combination of factors. The influence of legume crop area decreased with the degree of specialization of the aphid species to such crops. The effect of geographical variation was high even when controlling for environmental variables, suggesting that many other spatially structured processes act on aphid population characteristics. Multifactorial analyses helped to partition the effects of different global change drivers. Climate and land-use changes have strong effects on aphid populations, with important implications for future agriculture. Additionally, trait-based response variation could have major consequences at the community scale.

关键词： abundance climate warming degree of specialization land-use change legume aphids phenology

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

Magnetic Characterization of Amphibolites from the Fomopéa Pluton(West Cameroon):Their Implication in the Pan-African Deformation of the Central African Fold Belt

引用

Acta Geologica Sinica(English Edition) 2012年第1期86卷 73-84页

作者： NJANKO Théophile FOZING Eric Martial KWéKAM maurice YAKEU SANDJO Angéline Flore NJONFANG Emmanuel Laboratory of Environmental Geology Department of Earth SciencesDschang University Laboratory of Geology ENS Yaounde I University

The Fomopea granitic pluton is emplaced in gnessic and amphibolitic basement. These gneissic and amphibolitic basement rocks are represented in the pluton＇s body as sub-rounded, elongated or stretched xenoliths. Amphibolitic xenoliths display testimonies of two main tectonic events namely：（i） El flattening deformation event characterized by a NW-SE to E-W foliation with a best pole at 246/57 and a mineral stretched lineation with a best line at 293/47; and （ii） E2 compressive event typified by （1） N-S to NNE-SSW steeply dipping foliation; （2） S-type flexion-fold indicating a sinistral shear movement. These amphibolite rocks indicate a magnetic susceptibility magnitude （Km） range from 418 ~SI to 90092 IISI for 87% of the stations showing a ferromagnetic behavior. K-T curves reveal the presence of Ti-poor magnetite as susceptibility mineral carrier. Magnetic foliation and lineation suggest that the N-S strike direction observed in the Bamendou amphibolite is, as pointed out elsewhere in the Central African Fold Belt, of paramount importance in the tectonic evaluation of the Fomopea area, since it has most likely acted as major deformation phase in the second tectonic event in the belt.

关键词： amphibolite anisotropy of magnetic susceptibility (AMS) Pan-African fold belt Cameroon

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

采用Kalman滤波器进行信号处理的高频信号注入法在电动机控制中的应用

引用

电工技术学报 2010年第2期25卷 54-59,66页

作者：郑泽东李永东 maurice Fadel 清华大学电机工程与应用电子技术系北京100084 法国图卢兹国家理工学院ENSEEIHT LAPLACE-CNRS实验室图卢兹31071

高频信号注入法是交流电动机无机械传感器控制中实现低速甚至零速运行的一个有效方法,高频信号注入法的最大困难是如何从测量的电压或电流中提取出需要的高频信号并进行相应的信号处理。Kalman滤波器是一种自适应滤波器,广泛应用于各种... 详细信息

高频信号注入法是交流电动机无机械传感器控制中实现低速甚至零速运行的一个有效方法,高频信号注入法的最大困难是如何从测量的电压或电流中提取出需要的高频信号并进行相应的信号处理。Kalman滤波器是一种自适应滤波器,广泛应用于各种信号检测和处理中。本文提出了一种采用Kalman滤波器进行信号处理的高频信号注入法来实现交流电动机的无机械传感器低速运行,利用Kalman滤波器的自适应特性,自动辨识检测电动机电流中特定频率的高频信号,检测结果受噪声和频率相近信号的影响较小,并且幅值和相位误差很小。以永磁同步电动机为例进行了仿真和实验,结果表明该方法是一种简单直接的高频信号注入法的信号处理方法,具有非常好的稳定性和精度,可以实现交流电动机无机械传感器控制的低速甚至零速运行。

关键词： Kalman滤波器高频信号注入交流电动机无机械传感器控制低速运行

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

METAPHORES, TRANSFERTS, TRANSPORTS

引用

法国研究 1992年第1期 128-137页

作者： maurice COURTOIS

此文作者从隐喻一词在希腊语中的本义(metaphorai:转变,移动)出发,指出隐喻中被转移的并不是文本的意义,而是读者赋予文本的意义,读者在转移文本意义的同时,也转移了他对文本作者形成的概念,文本作者变成了“我们在阅读中创造出来的虚... 详细信息

此文作者从隐喻一词在希腊语中的本义(metaphorai:转变,移动)出发,指出隐喻中被转移的并不是文本的意义,而是读者赋予文本的意义,读者在转移文本意义的同时,也转移了他对文本作者形成的概念,文本作者变成了“我们在阅读中创造出来的虚构人物”。因此,阅读构成的意指活动和精神分析中的转移一样遵循着相同的法则:欲望法则。读者应该意识到,他是把自己的想象投射到了文本上,是出于本性而解释文本,只有这样,隐喻以及它所提示的转移才能使读者成为他自己,才能确认作者的他人身份,隐喻转移才能成为一种丰富文本意义的引人入胜的游戏。

关键词：隐喻文本意义转移作者读者精神分析意指活动希腊语法则阅读中

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

Integration and Innovation Incorporating Blended Learning into ELT

引用

基础教育外语教学研究 2005年第1期 -页

作者： maurice Claypole LinguaServe Language Services and Nurtingen University of Applied Sciences Germany

I'd like to begin this morning by drawing your attention tothe four main goals or priorities of IATEFL ***'s mission statement--as printed on the front of yourconference program-focuses on: Learning Adapting Communica...

关键词：

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

Reassessing the Role of Translation in English Language Teaching

引用

基础教育外语教学研究 2008年第12期 22-29页

作者： maurice Claypole

PreambleMy purpose in this talk is to reassess the role of translation in English language teaching. I propose to do this by examining how approaches to the use of translation in the teaching of English have changed and developed over the years and then evaluating the current state of the art in order to establish some possible guidelines for the way forward. And whilst I shall be doing so from a predominantly European perspective. I also intend to consider examples and comments from educators around the world. With regard to China in particular, it is important to learn from these insights without necessarily copying the techniques involved or repeating mistakes that have been made elsewhere. For the main part of my talk, I will focus on theoretical aspects, but towards the end I intend to provide you with some practical suggestions on how to implement the theory in the classroom.

关键词：英语翻译方法教学方法教育改革

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

scCloudMine:A cloud-based app for visualization,comparison,and exploration of single-cell transcriptomic data

引用

Plant Communications 2022年第4期3卷 14-24页

作者： Mathew G.Lewsey Changyu Yi Oliver Berkowitz Felipe Ayora maurice Bernado James Whelan La Trobe Institute for Agriculture and Food La Trobe UniversityAgriBio BuildingBundooraVIC 3086Australia Australian Research Council Research Hub for Medicinal Agriculture La Trobe UniversityAgriBio BuildingBundooraVIC 3086Australia BizData Level 9/278Collins StreetMelbourneVIC 3000Australia Department of Animal Plant and Soil SciencesSchool of Life ScienceLa Trobe UniversityBundooraVIC 3086Australia Research and Advanced Computing BizDataLevel 312-6Gilmer TerraceWellington6011New Zealand

scCloudMine is a cloud-based application for visualization,comparison,and exploration of single-cell transcriptome *** does not require an on-site,high-power computing server,installation,or associated expertise and *** upload their own or publicly available scRNA-seq datasets after preprocessing for visualization using a web *** data can be viewed in two color modes—Cluster,representing cell identity,and Values,showing levels of expression—and data can be queried using keywords or gene identification number(s).Using the app to compare studies,we determined that some genes frequently used as cell-type markers are in fact study *** apparent cell-specific expression of PHO1;H3 differed between GFP-tagging and scRNA-seq *** phosphate transporter genes were induced by protoplasting,but they retained cell specificity,suggesting that cell-specific responses to stress(i.e.,protoplasting)can *** of the cell specificity of hormone response genes revealed that 132 hormone-responsive genes display restricted expression and that the jasmonate response gene TIFY8 is expressed in endodermal cells,in contrast to previous *** also appears that JAZ repressors have cell-type-specific *** features identified using scCloudMine highlight the need for resources to enable biological researchers to compare their datasets of interest under a variety of *** enables researchers to form new hypotheses and perform comparative studies and allows for the easy re-use of data from this emerging technology by a wide variety of users who may not have access or funding for high-performance on-site computing and support.

关键词： single cell RNA sequencing visualization discovery comparison

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

Rotating machinery vibration : +from analysis to troubleshooting / +maurice L. Adams, Jr.

引用

1000年

作者： maurice L. Adams Jr.

Includes bibliographical references and index.

ISBN: (纸本)9781439807170 (hardcover : alk. paper);1439807175 (hardcover : alk. paper);9781439818701 (pbk.);1439818703 (pbk.)

Includes bibliographical references and index.

关键词： Turbomachines Rotors

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Efficient dechlorination of chlorinated solvent pollutants under UV irradiation by using the synthesized TiO_2 nano-sheets in aqueous phase

引用

Journal of Environmental Sciences 2014年第5期26卷 1188-1194页

作者： Landry Biyoghe Bi Ndong Murielle Primaelle Ibondou Zhouwei Miao Xiaogang Gu Shuguang Lu Zhaofu Qiu Qian Sui Serge maurice Mbadinga State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry East China University of Science and Technology

Titanium dioxide （TiO2）, which is the widely used photo-catalyst, has been synthesized by simple hydrothermal solution containing tetrabntyl titanate and hydrofluoric acid. The synthesized product has been applied to photo-degradation in aqueous phase of chlorinated solvents, namely tetra- chloroethene （PCE）, tdchloroethene （TCE） and 1,1,l-trichloroethane （TCA）. The photo-degradation results revealed that the degradation of these harmful chemicals was better in UV/synthesized TiO2 system compared to UV/commerciai P25 system and UV only system. The photo-catalytic efficiency of the synthesized TiO2 was 1.4, 1.8 and 3.0 folds higher compared to the commercial P25 for TCA, TCE and PCE degradation, respectively. Moreover, using nitrobenzene （NB） as a probe of hydroxyl radical （.OH）, the degradation rate was better over UV/synthesized TiO2, suggesting the high concentration of .OH generated in UV/synthesized TiO2 system. In addition, .OH concentration was confirmed by the strong peak displayed in EPR analysis over U~/synthesized TiO2 system. The characterization result using XRD and TEM showed that the synthesized TiO2 was in anatase form and consisted of well-defined sheet-shaped structures having a rectangular outline with a thickness of 4 rim, side length of 50 nm and width of 33 nra and a surface 90.3 m^2/g. XPS analysis revealed that ≡Ti-F bond was formed on the surface of the synthesized TiO2. The above results on both photocatalytic activity and the surface analysis demonstrated the good applicability of the synthesized TiO2 nano-sheets for the remediation of chlorinated solvent contaminated groundwater.

关键词： photo-degradation TiO2 chlorinated solvent pollutants nitrobenzene UV illumination groundwater remediation

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

Geochemical evaluation of mineralization potential of the Somie-Ntem area within the Tikar plain,Cameroon:implication on petrogenesis

引用

Acta Geochimica 2022年第5期41卷 861-886页

作者： Mero Yannah Yaya Fodoue maurice Kwekam Benoit Joseph Mbassa Juliana Amboh Tifang Armand Dongmo Kagou Samuel Ndonwi Ayonghe Institute of Geological and Mining Research YaoundeCameroon Department of Earth Sciences University of DschangDschangCameroon Central Unit for Internal Control and Evaluation University of BueaBueaCameroon

Somie-Ntem area of the Tikar plain belongs to the western Cameroon *** lithology of the plain has been characterized,and the mineral potential is still unclear despite previous reports on Sn deposit within one of the magmatic *** results show two groups of granitic rocks displaying oxidized and reduced character;(1)mesocratic(oxidized)granites including biotitebearing,hornblende-biotite-bearing,hornblende-epidotebearing and pyroxene-bearing;(2)leucogranites(reduced)that are generally amphibole-pyroxene *** granitoids are hosted by gneisses and metasedimentary rocks partially covered by *** element composition shows high-K calc-alkaline to shoshonite affinity,metaluminous to weakly peraluminous I-type *** granites show moderately negative Eu anomaly,depleted in Nb,P,Ti,and are related to syn-collisional *** are post-orogenic with strong negative Eu anomaly,depleted in Ba and Sr and enriched in Hf,Nb and *** are fertile in Sn and Zn,enriched through postmagmatic metasomatism and ***–Cu–Ni–V mineralization occurs in hornblende-bearing gneisses and their enrichment suggests a possible Ni–Cutype PGEs mineralization in this ***,their trace element shows high Ni/Cu,very low Rb/Sr,low LILE and LREE which indicates mantle fractionation at *** absence of olivine and pyroxene,and increased SiO_(2)and Al_(2)O_(3)in the Cr–Cu–Ni–V-bearing rocks show that the parent magma experienced fractional crystallization and crustal contamination during ***,the high Zr/Rb and K/Rb ratios show that hydrothermal activity was not intense to enhance mineralization in the *** in the direction of stress during shear deformation inhibited an effective hydrothermal activity and ore deposition in the region.

关键词： Geochemistry Mineralization Somie-Ntem Tikar plain Cameroon

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：