检索结果-南通市图书馆

Reversible hydrogenation restores defected graphene to graphene

Science China Chemistry 2021年第6期64卷 1047-1056页

作者： Lin Jiang Pauline mGvan Deursen Hadi Arjmandi-Tash Liubov ABelyaeva Haoyuan Qi Jiao He vincent Kofman Longfei Wu Valery muravev Ute Kaiser Harold Linnartz Emiel JmHensen Jan PHofmann Grégory FSchneider Leiden Institute of Chemistry Leiden UniversityEinsteinweg 552333CC LeidenThe Netherlands Central Facility for Electron microscopy Electron Microscopy Group of Materials ScienceUlm UniversityAlbert-Einstein-Allee 11Ulm 89081Germany Laboratory for Astrophysics Leiden ObservatoryLeiden UniversityNiels Bohrweg 22333 CA LeidenThe Netherlands Laboratory for Inorganic materials and Catalysis Department of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O.Box 5135600 MB EindhovenThe Netherlands Center for Advancing Electronics Dresden(cfaed)and Faculty of Chemistry and Food Chemistry Technical University of Dresden010069 DresdenGermany

Graphene as a two-dimensional material is prone to hydrocarbon contaminations,which can significantly alter its intrinsic electrical ***,we implement a facile hydrogenation-dehydrogenation strategy to remove hydrocarbon contaminations and preserve the excellent transport properties of monolayer *** electron microscopy we quantitatively characterized the improved cleanness of hydrogenated graphene compared to untreated *** situ spectroscopic investigations revealed that the hydrogenation treatment promoted the adsorption of water at the graphene surface,resulting in a protective layer against the re-deposition of hydrocarbon ***,the further dehydrogenation of hydrogenated graphene rendered a more pristine-like basal plane with improved carrier mobility compared to untreated pristine *** findings provide a practical post-growth cleaning protocol for graphene with maintained surface cleanness and lattice integrity to systematically carry a range of surface chemistry in the form of a well-performing and reproducible transistor.

关键词： graphene reversible hydrogenation surface cleanness in situ spectroscopy transistors

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

肌无力或与老年美国人的早期死亡存在因果关系:配对队列研究

肌无力或与老年美国人的早期死亡存在因果关系:配对队列研究

引用

作者： Ryan mcgrath Brena m.vincent mark D.Peterson Donald A.Jurivich Lindsey J.Dahl Kyle J.Hackney 宋安琪上海交通大学医学院附属仁济医院临床营养科

目的:用配对队列研究量化研究肌无力和死亡率之间的联系,帮助建立肌无力对早期死亡的影响。我们使用美国老年人群进行配对分析,来确定肌无力的人是否具有更高的死亡风险。设计:长期随访成组研究地点:包括身体测量的随访是面对面完成的,...

目的:用配对队列研究量化研究肌无力和死亡率之间的联系,帮助建立肌无力对早期死亡的影响。我们使用美国老年人群进行配对分析,来确定肌无力的人是否具有更高的死亡风险。设计:长期随访成组研究地点:包括身体测量的随访是面对面完成的,但是部分核心随访是通过电话完成。参与对象:19729名年龄50岁及以上的美国人的数据从2006-2014年Health and Retirement study里面提取并分析。方法:握力计用来测试每位受试者握力(handgrip strength,HGS)。男性HGSmatching algorithm方法来进行配对队列。结果:在1077例肌无力和正常的对子中,肌无力组401名(37%)、正常组296名(27.4%)美国人在4.5±2.5的随访时间内死亡。在1057例肌无力和强壮的对子中,肌无力组293名(37%)、强壮组243名(22.9%)受试者在4.5±2.5年的随访时间内死亡。和正常和强壮组人群相比,肌无力组人群死亡风险分别增加1.4 (95%可信区间:1.19,1.64)和1.54(95%可信区间:1.3,1.83)倍。结论:我们的研究提示在美国老年人群中,肌无力和死亡率可能存在因果联系。健康从业人员应该将HGS作为常规健康检查的一部分并且让患者知道肌无力的危害。

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

minkowski Sum of Polytopes Defined by Their Vertices

引用

Journal of Applied mathematics and Physics 2015年第1期3卷 62-67页

作者： vincent Delos Denis Teissandier University of Bordeaux CNRS National Center for French Research I2M UMR 5295 Talence France

minkowski sums are of theoretical interest and have applications in fields related to industrial backgrounds. In this paper we focus on the specific case of summing polytopes as we want to solve the tolerance analysis problem described in [1]. Our approach is based on the use of linear programming and is solvable in polynomial time. The algorithm we developed can be implemented and parallelized in a very easy way.

关键词： Computational Geometry Polytope minkowski Sum Linear Programming Convex Hull

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

金属诱导非晶硅横向晶化形成的多晶硅的生长研究

引用

固体电子学研究与进展 2001年第3期21卷 345-349页

作者：秦明 Yuen C Y Poon vincent m C 黄庆安东南大学微电子中心南京210096 香港科技大学电子与电机工程系

详细研究了金属诱导非晶硅横向晶化时间、温度对晶化生长的影响。结果显示 ,晶化生长速度受温度影响较大 ,其最大生长速度在 6 2 5℃附近。在较高的温度下 ,非晶自发成核和晶化 ,从而限制了金属诱导晶体生长速度。镍诱导源的长度和厚度... 详细信息

详细研究了金属诱导非晶硅横向晶化时间、温度对晶化生长的影响。结果显示 ,晶化生长速度受温度影响较大 ,其最大生长速度在 6 2 5℃附近。在较高的温度下 ,非晶自发成核和晶化 ,从而限制了金属诱导晶体生长速度。镍诱导源的长度和厚度也对晶体生长有影响。

关键词：金属诱导横向晶化晶化速度镍诱导源晶化波多晶硅生长

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

土壤质地和灌水器材料对负压灌溉出水流量及土壤水运移的影响

引用

农业工程学报 2006年第4期22卷 19-22页

作者：江培福雷廷武 vincent F Bralts 刘汉中国农业大学水利与土木工程学院北京100083 College of Engineering Purdue University

负压灌溉法是一种新近提出的节水灌溉技术,灌溉时供水水头为“负值”,即灌溉水源高程低于灌水器高程。不同材料灌水器和土壤质地是影响灌溉系统出水流量及土壤水运移的重要因素。该文研究了在高程差H为-0.5 m情况下两种灌水器及两种质... 详细信息

负压灌溉法是一种新近提出的节水灌溉技术,灌溉时供水水头为“负值”,即灌溉水源高程低于灌水器高程。不同材料灌水器和土壤质地是影响灌溉系统出水流量及土壤水运移的重要因素。该文研究了在高程差H为-0.5 m情况下两种灌水器及两种质地土壤对两者的影响。结果表明:灌水器相同时,累计入渗量、水平和垂直最大湿润距离随时间呈幂函数关系变化;在历时相同时黏壤土较砂壤土大;湿润体近似为六分之一的竖直椭球体,但黏壤土水平与垂直最大湿润距离之比大于砂壤土。土壤质地相同时,纤维灌水器较陶土灌水器出水流量高。试验结果进一步证明了负压灌溉的可行性,并为确定负压灌溉系统应用范围及规划设计过程中灌水器选择提供了依据。

关键词：负压灌溉土壤水运动灌水器湿润锋入渗土壤质地

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

Liver transplantation during global COVID-19 pandemic

引用

World Journal of Clinical Cases 2021年第23期9卷 6608-6623页

作者： mostafa Alfishawy Nso Nso mahmoud Nassar Jonathan Ariyaratnam Sakil Bhuiyan Raheel S Siddiqui matthew Li Howard Chung Amira Al Balakosy Ahmed Alqassieh Tibor Fülöp vincent Rizzo Ahmed Daoud Karim m Soliman Infectious Diseases Infectious Diseases Consultants and Academic Researchers of Egypt IDCARECairo 0000Egypt Department of medicine Icahn School of Medicine at Mount Sinai(NYC Health and Hospitals:Queens)New YorkNY 11373United States Clinical pharmacy department Icahn School of Medicine at Mount Sinai(NYC Health and Hospitals:Queens)New YorkNY 11373United States Tropical medicine Department Ain Shams UniversityCairo 11517Egypt Department of Surgery Medical University of South CarolinaCharlestonSC 29425United States Department of medicine Medical University of South CarolinaCharlestonSC 29425United States Department of medicine Kasr Alainy Medical SchoolCairo UniversityCairo 11562Egypt

The coronavirus disease 2019(COVID-19)caused by severe acute respiratory disease respiratory syndrome coronavirus-2 has significantly impacted the health care systems *** transplantation(LT)has faced an unequivocal challenge during this unprecedented *** targeted review aims to cover most of the clinical issues,challenges and concerns about LT during the COVID-19 pandemic and discuss the most updated literature on this rapidly emerging subject.

关键词： COVID-19 Calcineurin inhibitors Cytokine Distributive justice End-stage liver disease Immunosuppression Liver transplantation mortality

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 Development of Fuzzy Controller: The Case of Gaussian and Triangular membership Functions

引用

Journal of Signal and Information Processing 2011年第4期2卷 257-265页

作者： vincent O. S. Olunloyo Abayomi m. Ajofoyinbo Oye Ibidapo-Obe 不详

In recent years, the use of Fuzzy set theory has been popularised for handling overlap domains in control engineering but this has mostly been within the context of triangular membership functions. In actual practice however, such domains are hardly triangular and in fact for most engineering applications the membership functions are usually Gaussian and sometimes cosine. In an earlier paper, we derived explicit Fourier series expressions for systematic and dynamic computation of grade of membership in the overlap and non-overlap regions of triangular Fuzzy sets. In another paper, we extended the methodology to cover cases of cosine, exponential and Gaussian Fuzzy sets by presenting explicit Fourier series representation for encoding fuzziness in the overlap and non-overlap domains of Fuzzy sets. This current paper presents the development of a “Fuzzy Controller” device, which incorporates the formal mathematical representation for computing grade of membership of Gaussian and triangular Fuzzy sets. It is shown that triangular approximation of Gaussian membership function in Fuzzy control can lead to wrong linguistic classification which may have adverse effects on operational and control decisions. The development of the Fuzzy controller demonstrates that the proposed technique can indeed be incorporated in engineering systems for dynamic and systematic computation of grade of membership in the overlap and non-overlap regions of Fuzzy sets;and thus provides a basis for the design of embedded Fuzzy controller for mission critical applications.

关键词： Fuzzy Controller Triangular Gaussian Fourier Series Representation membership Functions

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

Akt3 promotes cancer stemness in triple-negative breast cancer through YB1-Snail/Slug signaling axis

引用

Genes & Diseases 2023年第2期10卷 301-306页

作者： Ye Tian Jiang Li Tsz Chung Cheung vincent Tam C. Geoffrey Lau Xin Wang Y.Rebecca Chin Tung Biomedical Sciences Centre Department of Biomedical SciencesCity University of Hong KongKowloonHong Kong SARChina Department of Neuroscience City University of Hong KongKowloonHong Kong SARChina City University of Hong Kong Shenzhen Research Institute ShenzhenGuangdong 518057China Department of Surgery The Chinese University of Hong KongShatinHong Kong SARChina

Dear Editor,Triple-negative breast cancer(TNBC)is an aggressive breast cancer subtype enriched in cancer stem cells(CSCs),which is characterized by high malignancy and drug resistance.1 The PI3K/Akt signaling cascade is frequently hyperactivated in *** and non-redundant functions of the three Akt isoforms in tumorigenesis,however,have not been studied *** is noteworthy that despite a few isoform-specific substrates have been identified for Akt1 and Akt2,an Akt3-specific substrate is yet to be *** have previously shown that overexpression of Akt3,but not Akt1 or Akt2,plays an essential role in TNBC growth and therapeutic resistance of breast cancer.2 However,the role of Akt3 in TNBC CSCs remains unclear.

关键词： Akt1 breast Akt3

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

marker-Assisted Introgression of Quantitative Resistance Gene pi21 Confers Broad Spectrum Resistance to Rice Blast

引用

Rice science 2020年第2期27卷 113-123页

作者： Rosalyn B.ANGELES-SHIm.vincent P.REYES marilyn mdel VALLE Ruby S.LAPIS Junghyun SHIm Hidehiko SUNOHARA Kshirod K.JENA motoyuki ASHIKARI Kazuyuki DOI Plant Breeding Division International Rice Research InstituteDAPO Box 7777Metro Manilathe Philippines Bioscience and Biotechnology Center Nagoya UniversityChikusa-ku Furo-choNagoyaAichi 464-8601Japan Graduate School of Bioagricultural Sciences Nagoya UniversityChikusa-ku Furo-choNagoyaAichi 464-8601Japan Department of Plant and Soil Science College of Agricultural Sciences and Natural ResourcesTexas Tech UniversityLubbockTexas 79409USA

The quantitative resistance gene pi21 from Sensho was introgressed to an indica breeding line IR63307-4B-13-2,a pyramiding line IRBB4/5/13/21,and a tropical japonica line Kinandang Patong by marker-assisted backcrossing.A total of 192 improved lines at the BC4F3 and BC4F4 generations were developed and confirmed to have the gene introgression via genotyping using a pi21-specific InDel *** randomly selected improved lines,representing all the three genetic backgrounds,demonstrated resistance against leaf blast composites in the field and a broader spectrum resistance against individual isolates compared to the recurrent parents in the ***,the tested lines exhibited pi21-acquired resistance against 11 leaf blast isolates that elicited susceptible reactions from the recurrent *** the tested lines maintained a comparative heading date,and similar or improved panicle length,number of primary branches per panicle and number of total grains per panicle relative to the recurrent *** physical grain characteristics of the recurrent parents were also maintained in the 13 lines tested,although variability in the amylose content and chalkiness degree was *** successful marker-assisted introgression of pi21 in diverse genetic backgrounds and the resulting broader spectrum resistance of improved lines against leaf blast indicate the potential of pi21 for deployment in cultivars grown across other rice growing regions in Asia.

关键词： rice blast pi21 gene marker-assisted breeding disease resistance

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

Revealing processing stability landscape of organic solar cells with automated research platforms and machine learning

引用

Infomat 2024年第7期6卷 51-61页

作者： Xiaoyan Du Larry Lüer Thomas Heumueller Andrej Classen Chao Liu Christian Berger Jerrit Wagner vincent m.Le Corre Jiamin Cao Zuo Xiao Liming Ding Karen Forberich Ning Li Jens Hauch Christoph J.Brabec Helmholtz Institute Erlangen‐Nürnberg for Renewable Energy(HI ERN) Forschungszentrum Jülich GmbHErlangenGermany Institute of materials for Electronics and Energy Technology(i‐mEET) Friedrich‐Alexander‐Universität Erlangen‐Nürnberg(FAU)ErlangenGermany School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinanthe People’s Republic of China Key Laboratory of Theoretical Organic Chemistry and Functional molecule of ministry of Education School of Chemistry and Chemical EngineeringHunan University of Science and TechnologyXiangtanthe People’s Republic of China Center for Excellence in Nanoscience Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijingthe People’s Republic of China Institute of Polymer Optoelectronic materials&Devices Guangdong Basic Research Center of Excellence for Energy&Information Polymer MaterialsState Key Laboratory of Luminescent Materials&DevicesSouth China University of Technology

We use an automated research platform combined with machine learning to assess and understand the resilience against air and light during production of organic photovoltaic(OPV)devices from over 40 donor and acceptor *** standardized protocol and high reproducibility of the platform results in a dataset of high variety and veracity to deploy machine learning models to encounter links between stability and chemical,energetic,and mor-phological *** find that the strongest predictor for air/light resilience during production is the effective gap Eg,eff which points to singlet oxygen rather than the superoxide anion being the dominant agent in degradation under processing conditions.A similarly good prediction of air/light resilience can also be achieved by considering only features from chemical structure,that is,information which is available prior to any experimentation.

关键词： air stability automated screening donor/acceptor combinations machine learning organic solar cells

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

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：