检索结果-南通市图书馆

Boosting aqueous nickel-zinc battery stability with bimetallic ion-integrated 1D metal-organic nanowires

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Yihao Chen Jin Liang Yichun Su Guoyin Zhu Hengyue xu Hongye Ding Guangxun Zhang Dianheng Yu Zizhou Shen Yizhou Zhang Wei Huang Huan Pang School of Chemistry and Chemical Engineering Yangzhou University Key Laboratory of Flexible Electronics (KLoFE) & Institute of Advanced materials (IAm) School of Flexible Electronics (Future Technologies) Nanjing Tech University (NanjingTech) Institute of Advanced materials and Flexible Electronics (IAmFE) School of Chemistry and Materials Science Nanjing University of Information Science & Technology Department of Chemistry Tsinghua University State Key Laboratory of Coordination Chemistry Nanjing University

Limited by low conductivity,designing cathode materials with excellent electron transfer efficiency for high-performance nickel-zinc batteries （NZBs） remains *** this study,a series of bimetallic metal-organic nanowires were fabricated by doping m ions in NiNTA,resulting in NimNTA (m=mg2+,mn2+,Co2+,Zn2+,Ag+),and NixCo6-xNTA （x=1,2,3,4,5）.The proportions and types of metal ions can be modified without altering the initial coordination structure.X-ray absorption fine structure spectroscopy （XAFS） revealed that only m–O bonds,not metal bonds,were present in the *** performance of Ni2Co4NTA as the cathode for aqueous NZBs was significantly improved,achieving the maximum energy density of 279.17Wh kg-1with the high cycle stability （retention rate of 72.0%after 1,000 cycles）.The flexible Ni2Co4NTA//Zn@carbon cloth battery employing gel electrolyte also exhibits the excellent Coulombic efficiency of 96%after 350 *** approach shows considerable potential for designing one-dimensional materials with bimetallic modifications,providing new strategies for developing cathode materials for NZBs with high specific capacity and cycle stability.

关键词：

Peri-centrosomal localization of small interfering RNAs in C. elegans

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Life Sciences 2025年

作者： Qile Jin xuezhu Feng minjie Hong Ke Wang Xiangyang Chen Jiewei Cheng Yan Kuang Xiaoyue Si m.ngjing xu Xinya Huang Shouhong Guang Chengming Zhu Department of Obstetrics and Gynecology The First Affiliated Hospital of USTC The USTC RNA Institute Hefei National Research Center for Physical Sciences at the Microscale School of Life Sciences Division of Life Sciences and Medicine Biomedical Sciences and Health Laboratory of Anhui Province University of Science and Technology of China School of Basic medicine Anhui Medical University

The centrosome is the microtubule-organizing center and a crucial part of cell division. Centrosomal RNAs(cnRNAs) have been reported to enable precise spatiotemporal control of gene expression during cell division in many species. Whether and how cnRNAs exist in C. elegans are unclear. Here, using the nuclear RNAi Argonaute protein NRDE-3 as a reporter, we observed potential peri-centrosome localized small interfering(si)RNAs in C. elegans. NRDE-3 was previously shown to associate with pre-mRNAs and pre-rRNAs via a process involving the presence of complementary siRNAs. We generated a GFP-NRDE-3 knock-in transgene through CRISPR/Cas9 technology and observed that NRDE-3 formed peri-centrosomal foci neighboring the tubulin protein TBB-2, other centriole proteins and pericentriolar material(PCm)components in C. elegans embryos. The peri-centrosomal accumulation of NRDE-3 depends on RNA-dependent RNA polymerase(RdRP)-synthesized 22G siRNAs and the PAZ domain of NRDE-3, which is essential for siRNA binding. mutation of eri-1, ergo-1, or drh-3 significantly increased the percentage of pericentrosome-enriched NRDE-3. At the metaphase of the cell cycle, NRDE-3 was enriched in both the peri-centrosomal region and the spindle. moreover, the integrity of centriole proteins and pericentriolar material(PCm) components is also required for the peri-centrosomal accumulation of NRDE-3. Therefore, we concluded that siRNAs could accumulate in the pericentrosomal region in C. elegans and suggested that the peri-centrosomal region may also be a platform for RNAi-mediated gene regulation.

关键词：

modelling two-layer nanofluid flow in a micro-channel with electro-osmotic effects by means of Buongiorno’s model

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Applied mathematics and mechanics(English Edition) 2020年第1期41卷 83-104页

作者： m.D.K.NIAZI Hang xu State Key Lab of Ocean Engineering Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE)School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong University

A fully developed steady immiscible flow of nanofluid in a two-layer microchannel is studied in the presence of electro-kinetic ***’s model is employed for describing the behavior of *** from the previous studies on two-layer channel flow of a nanofluid,the present paper introduces the flux conservation conditions for the nanoparticle volume fraction field,which makes this work new and unique,and it is in coincidence with practical *** governing equations are reduced into a group of ordinary differential equations via appropriate similarity *** highly accurate analytical approximations are *** physical quantities and total entropy generation are analyzed and discussed.A comparison is made to determine the significance of electrical double layer(EDL)effects in the presence of an external electric *** is found that the Brownian diffusion,the thermophoresis diffusion,and the viscosity have significant effects on altering the flow behaviors.

关键词： electrical double layer(EDL) entropy generation micro-channel nanofluid

Gnetifolin K, a New Stilbene Diglucoside from Gnetum parvifolium

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1997年第6期8卷 509-510页

作者： xu, Q Lin, m CHINESE ACAD mED SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA BEIJING UNION mED COLL BEIJING 100050PEOPLES R CHINA

A new stilbene diglucoside, gnetifolin K, was isolated from the lianas of Gnetum parvifolium. Its structure was established as isorhapotigenin-3,4'-di-O-beta-D-glucoside on the basis of spectral and chemical evidence.

关键词： Gnetifolin K a New Stilbene Diglucoside from Gnetum parvifolium

Aphids and their transmitted potato viruses: A continuous challenges in potato crops

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2020年第2期19卷 367-375页

作者： xu Yi Stewart m.GRAY Department of Plant Pathology Nanjing Agricultural UniversityNanjing 210095P.R.China Section of Plant Pathology and Plant-microbe Biology School of Integrated Plant ScienceCornell UniversityIthacaNY 14850USA Emerging Pest and Pathogens Research Unit United States Department of Agriculture–Agricultural Research ServiceIthacaNY 14850USA

Aphid is one of the most destructive insect pests on cultivated plants in temperate *** piercing-sucking mouthparts and phloem feeding behavior directly damage crops and deplete plant ***(Solanum tuberosum L.)is one of the most important food sources on the planet,and several aphid species,e.g.,myzus persicae(Sulzer)(green peach aphid)and macrosiphum euphorbiae(Thomas)(potato aphid)(Hemiptera:Aphididae)colonize potato and transmit several economically important ***-transmitted potato viruses have been emerging all over the world as a very serious problem in potato production,inducing a wide variety of foliar and tuber symptoms,leading to severe yield reduction and loss of tuber *** this review,recent advances in understanding the interactions of potato viruses with their hosts,aphid vectors and the environment are described.

关键词： aphids virus potato vector transmission

Deformation, Phase Transformation and Recrystallization in the Shear Bands Induced by High-Strain Rate Loading in Titanium and Its Alloys

在线全文

学校读者我要写书评

暂无评论

Journal of materials Science & Technology 2006年第6期22卷 737-746,I0003,I0004页

作者： Yongbo xu Yilong BAI m.A.meyers Shenyang National Laboratory for materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Laboratory for Non-linear mechanics of Continuous media Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Department of mechanical and Aerospace Engineering University of California San Diego La Jolla CA 920930-0411 USA

α-titanium and its alloys with a dual-phase structure （α＋β） were deformed dynamically under strain rate of about 10^4 s^-1. The formation and microstructural evolution of the localized shear bands were characterized by scanning electron microscopy （SEm） and transmission electron microscopy （TEm）. The results reveal that both the strain and strain rate should be considered simultaneously as the mechanical conditions for shear band formation, and twinning is an important mode of deformation. Both experimental and calculation show that the materials within the bands underwent a superhigh strain rate （9×10^5 S^-1） deformation, which is two magnitudes of that of average strain rate required for shear band formation; the dislocations in the bands can be constricted and developed into cell structures; the phase transformation from α to α2 within the bands was observed, and the transformation products （α2） had a certain crystallographic orientation relationship with their parent; the equiaxed grains with an average size of 10 μm in diameter observed within the bands are proposed to be the results of recrystallization.

关键词： Localized shear bands microstructure Dislocations Twinning Phase transformation Recrystallization

Numerical modeling on Suspended Sediment Transportation in the Hangzhou Bay

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 1998年第1期13卷 87-98页

作者： Zhang, JS Lu, PD xu, m Nanjing Hydraul Res Inst Dept River & Harbor Nanjing 210024 Peoples R China Nanjing Normal Univ Dept Geog Nanjing 210024 Peoples R China

In this paper the characteristics of tidal flow and seasonal variation of seidment content in the Hangzhou Bay and their affecting factors are studied. Field investigations and data analysis indicate that the sediment movement is mainly influenced by the Yangtze estuary and the sediment of the Yangtze estuary is induced by wind wave and tidal flow. Owing to the variation of dynamic conditions, the instantaneous sediment content is controlled by tidal flow, wind wave, depth of water and tidal range synthetically. A sediment content relationship formula is established with related factors. A non-equilibrium 2-dimensional numerical model of suspended sediment transportation is set up, and the finite element method is applied. The computation results of the model is in accordance with field data.

关键词： sediment sediment content sediment-carrying capacity finite element numerical model

IDENTIFICATION OF STIFFNESS COEFFICIENTS OF LAmINATED COmPOSITE PLATES

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1997年第3期7卷 46-50页

作者： Wang, XC Shen, XP Yuichiro, m xu, BY N CHINA UNIV TECHNOL BEIJING 100041PEOPLES R CHINA TSING HUA UNIV DEPT MECH ENGNBEIJING 100084PEOPLES R CHINA IBARAKI UNIV DEPT ENGNHITACHIIBARAKI 316JAPAN

ＩＤＥＮＴＩＦＩＣＡＴＩＯＮＯＦＳＴＩＦＦＮＥＳＳＣＯＥＦＦＩＣＩＥＮＴＳＯＦＬＡＭＩＮＡＴＥＤＣＯＭＰＯＳＩＴＥＰＬＡＴＥＳ①ＷａｎｇＸｉａｏｃｈｕｎ，ＳｈｅｎＸｉｎｐｕ，ＭａｓｕｄａＹｕｉｃｈｉｒｏ，ＸｕＢｉｎｇ... 详细信息

ＩＤＥＮＴＩＦＩＣＡＴＩＯＮＯＦＳＴＩＦＦＮＥＳＳＣＯＥＦＦＩＣＩＥＮＴＳＯＦＬＡＭＩＮＡＴＥＤＣＯＭＰＯＳＩＴＥＰＬＡＴＥＳ①ＷａｎｇＸｉａｏｃｈｕｎ，ＳｈｅｎＸｉｎｐｕ，ＭａｓｕｄａＹｕｉｃｈｉｒｏ，ＸｕＢｉｎｇｙｅＮｏｒｔｈＣｈｉｎａＵｎｉｖｅ...

关键词： inverse analysis composite laminated plate stiffness coefficient

The application of cellulosic-based materials on interfacial solar steam generation for highly efficient wastewater purification: A review

在线全文

学校读者我要写书评

暂无评论

Carbon Energy 2024年第9期6卷 245-282页

作者： Haroon A.m.Saeed Weilin xu Hongjun Yang Key Laboratory of Green Processing and Functional New Textile materials of ministry of Education Wuhan Textile UniversityWuhanChina Textile Engineering Department Faculty of Industries Engineering and TechnologyUniversity of GeziraWad MadaniSudan

The world's population is growing,leading to an increasing demand for freshwater resources for drinking,sanitation,agriculture,and *** solar steam generation(ISSG)can solve many problems,such as mitigating the power crisis,minimizing water pollution,and improving the purification and desalination of seawater,rivers/lakes,and *** materials are a viable and ecologically sound technique for capturing solar energy that is adaptable to a range of *** review paper aims to provide an overview of current advancements in the field of cellulose-based materials ISSG devices,specifically focusing on their applications in water purification and *** paper examines the cellulose-based materials ISSG system and evaluates the effectiveness of various cellulosic materials,such as cellulose nanofibers derived from different sources,carbonized wood materials,and two-dimensional(2D)and 3D cellulosic-based materials from various sources,as well as advanced cellulosic materials,including bacterial cellulose and cellulose membranes obtained from agricultural and industrial cellulose *** focus is on exploring the potential applications of these materials in ISSG devices for water desalination,purification,and *** function,advantages,and disadvantages of cellulosic materials in the performance of ISSG devices were also deliberated throughout our *** addition,the potential and suggested methods for enhancing the utilization of cellulose-based materials in the field of ISSG systems for water desalination,purification,and treatment were also emphasized.

关键词： cellulosic materials photothermal conversion process solar steam generation wastewater purification