检索结果-南通市图书馆

维普期刊数据库

Catalysts for the hydrogen evolution reaction in alkaline medium:Configuring a cooperative mechanism at the Ag-Ag_(2)S-moS_(2) interface

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第11期31卷 481-488,I0013页

作者： Avraham bar-Hen Simon Hettler Ashw.n Ramasubramaniam Raul Arenal Ronen bar-Ziv maya bar Sadan Department of Chemistry Ben-Gurion University of the NegevBeer-Sheva 8410501Israel Department of Chemistry Nuclear Research Center NegevP.O.Box 9001Beer-Sheva 84190Israel Laboratorio de microscopías Avanzadas Universidad de Zaragoza50018 ZaragozaSpain Instituto de Nanociencia y materiales de Aragon CSIC-U.de ZaragozaCalle Pedro Cerbuna 1250009 ZaragozaSpain Department of mechanical and Industrial Engineering University of MassachusettsAmherstMA 01003United States ARAID Foundation 50018 ZaragozaSpain

Designing electrocatalysts for Her in alkaline conditions to overcome the sluggish kinetics associated w.th the additional w.ter dissociation step is a recognized challenge in promoting the hydrogen *** this end,delicately tuning the atomic-scale structure and surface composition of nanoparticles is a common strategy and,specifically,making use of hybrid structures,can produce synergistic effects that lead to highly active ***,w. present a core-shell catalyst of Ag@moS_(2)that show. promising results tow.rds the hydrogen evolution reaction(Her)in both 0.5 m H_(2)SO_(4)and 0.5 m *** this hybrid structure,the moS_(2)shell is strained and defective,and charge transfer occurs betw.en the conductive core and the shell,contributing to the electrocatalytic *** shelling process results in a large fraction of Ag_(2)S in the cores,and adjusting the relative fractions of Ag,Ag_(2)S,and moS_(2)leads to improved catalytic activity and fast charge-transfer *** suggest that the enhancement of alkaline Her is associated w.th a cooperative effect of the interfaces,w.ere the Ag(Ⅰ)sites in Ag_(2)S drive the w.ter dissociation step,and the formed hydrogen subsequently recombines on the defective moS_(2)*** study demonstrates the benefits of hybrid structures as functional nanomaterials and provides a scheme to activate moS_(2)for Her in alkaline conditions.

关键词： w.ter splitting Core-shell Catalytic mechanism Electrocatalysis 2D materials

维普期刊数据库

Dynamic modeling of a three-dimensional braided composite thin plate considering braiding directions

在线全文

学校读者我要写书评

暂无评论

Applied mathematics and mechanics(English Edition) 2025年第1期46卷 123-138页

作者： Chentong GAO Huiyu SUN Jianping GU w.m.HUANG College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics School of mechanical and Aerospace Engineering Nanyang Technological University Jiangsu Key Laboratory of Advanced Structural materials and Application Technology School of Materials Science and EngineeringNanjing Institute of Technology

Currently, there are a limited number of dynamic models available for braided composite plates w.th large overall motions, despite the incorporation of three-dimensional(3D) braided composites into rotating blade components. In this paper, a dynamic model of 3D 4-directional braided composite thin plates considering braiding directions is established. Based on Kirchhoff's plate assumptions, the displacement variables of the plate are expressed. By incorporating the braiding directions into the constitutive equation of the braided composites, the dynamic model of the plate considering braiding directions is obtained. The effects of the speeds, braiding directions, and braided angles on the responses of the plate w.th fixed-axis rotation and translational motion, respectively, are investigated. This paper presents a dynamic theory for calculating the deformation of 3D braided composite structures undergoing both translational and rotational motions. It also provides a simulation method for investigating the dynamic behavior of non-isotropic material plates in various applications.

关键词： Constitutive equations

NUTRITIONFORCHILDANDADOLESCENTATHLETES

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国运动医学杂志 2000年第4期19卷 443-447页

作者： Oded bar-Or m.D. Children’s Exercise & Nutrition Centre mc master University Hamilton Ontario Canada

Effect of sodium replacement on the quality characteristics of pastırma(a dry-cured meat product)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Food Science and Human w.llness 2023年第1期12卷 266-274页

作者： barışYalınkılıç Güzin Kaban mükerrem Kaya Department of Gastronomy and Culinary Arts Faculty of Fine Arts and Architectureİstanbul Gedik UniversityKartalIstanbul 34876Turkey Department of Food Engineering Faculty of AgricultureAtatürk UniversityErzurum 25240Turkey

This study aims to investigate the effect of sodium replacement on the quality characteristics of pastı*** this purpose,pastırma production w.th four different salt mixtures(Ⅰ.100%NaCl;Ⅱ.50%NaCl+50%KCl;Ⅲ.40%NaCl+40%KCl+20%CaCl_(2);Ⅳ.30%NaCl+40%KCl+20%CaCl_(2)+10%mgCl_(2))w.re carried out using traditional *** use of different salt mixtures for pastırma had no statistically significant effect on the microbial counts and residual nitrite of the final *** a*and b*values w.re affected by this *** salt mixture containing CaCl_(2) or CaCl_(2)+mgCl_(2) significantly decreased the pH values and sensory *** eighteen volatile compounds w.re affected by the salt ***^(+),K^(+),Ca^(2+),and mg^(2+)had a certain increase depending on their ratio in the salt *** highest Cathepsin activity in all pastırma samples w.s observed in Cathepsin B+*** salt mixture w.th NaCl+KCl+CaCl_(2)+mgCl_(2) increased acid lipase ***,this mixture had no significant effect on neutral lipase activity.

关键词： Pastırma Chloride salts Volatile compounds Cathepsin Lipase

Arabidopsis mutants and the Netw.rk of m icrotu bu le-Associated Functions

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

molecular Plant 2008年第6期1卷 888-898页

作者： Henrik Buschmann Clive w. Lloyd Department of Cell and Developmental Biology John Innes Centre 1 Colney Lane Norwich NR4 7UH UK

In early eukaryotes, the microtubule system w.s engaged in mitosis, intracellular transport, and flagellumbased motility. In the plant lineage, the evolution of a multicellular body involved the conservation of some core functions, the loss of others, and the elaboration of new.microtubule functions associated w.th the multicellular plant habit. This diversification is reflected by the presence of both conserved （animal/fungi-like） and novel （plant-like） sequences encoding microtubule-related functions in the Arabidopsis genome. The collection of microtubule mutants has grow. rapidly over recent years. These mutants present a w.de range of phenotypes, consistent w.th the hypothesis of a functional diversification of the microtubule system. In this review. w. focus on mutant analysis and, in particular, discuss double mutant analysis as a valuable tool for pinpointing pathw.ys of gene function. A future challenge w.ll be to define the complete netw.rk of genetic and physical interactions of microtubule function in plants. In addition to review.ng recent progress in the functional analysis of the ＇mAPome＇, w. present an online database of Arabidopsis mutants impaired in microtubule functions.

关键词： cell division cell morphogenesis cytoskeleton genetics development Arabidopsis.

metal-organic framew.rks (mOFs) in aqueous batteries (ABs):unlocking potential through innovative materials design

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

Science China Chemistry 2025年

作者： Bo Han erhai Hu Bei-er Jia Ziyang Liu Shuen Tso Afriyanti Sumboja Ivandini T.Anggraningrum Anne Zulfia Syahrial Qingyu Yan SCARCE Laboratory Energy Research Institute NTU (ERIN) Nanyang Technological University School of materials Science and Engineering Nanyang Technological University material Science and Engineering Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Department of Chemistry University of Indonesia metallurgical & materials Engineering Department Fakultas Teknik Universitas Indonesia

metal-organic framew.rks (mOFs) represent a revolutionary class of materials in the field of energy storage,particularly for aqueous batteries (ABs).Distinguished by their large surface area,tuneable porosity,and adaptable chemical activity,mOFs offer significant advantages over conventional materials in battery *** article provides a thorough analysis of the crucial role that mOFs play in improving the efficiency of *** includes a concise review.of the current research progress,emphasizing the fundamental processes by w.ich mOFs enhance electrochemical ***,the review.examines the synthesis and design strategies for the structure of mOFs to maximize ion transport,improve conductivity,and enhance *** structural advantages,chemical versatility,stability,durability and functionalization potential of mOFs are comprehensively ***,w. explore the distinct advantages of mOFs in overcoming common challenges encountered in ABs,such as declining capacity,inadequate cycling stability,and limited energy *** paper also highlights the future research directions needed to fully harness their *** goal is to develop a fundamental understanding and stimulate further progress in the use of mOFs for advanced energy storage solutions.

关键词：

频移反馈Nd∶YLF激光软阈值实验与模拟计算

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

光学学报 1996年第2期16卷 146-149页

作者：梁桂云王瑞丽 m.w.PhilipsJ.R.m.bar 长春光学精密机械学院基础科学系云南师范大学物理系南安普顿大学光电子研究中心

实验和模拟计算均表明：在无注入种子激光的频移反馈Ｎｄ∶ＹＬＦ激光系统中，不存在软阈值，而当注入种子激光时，出现软阈值特性，实验还发现：随着种子激光功率增大，软阈值变得更加明显。

关键词：软阈值频移反馈激光系统种子激光

维普期刊数据库

Effect of sodium replacement on the quality characteristics of past?rma(a dry-cured meat product)

在线全文

学校读者我要写书评

暂无评论

Food Science and Human w.llness 2023年第1期12卷 266-274页

作者： bar?? Yal?nk?l?? Güzin Kaban mükerrem Kaya Department of Gastronomy and Culinary Arts Faculty of Fine Arts and Architecture ?stanbul Gedik University Department of Food Engineering Faculty of Agriculture Atatürk University

This study aims to investigate the effect of sodium replacement on the quality characteristics of past?rma. For this purpose, past?rma production w.th four different salt mixtures(Ⅰ. 100% Na Cl; Ⅱ. 50% Na Cl + 50% KCl; Ⅲ. 40% NaCl + 40% KCl + 20% CaCl2; Ⅳ. 30% NaCl + 40% KCl + 20% CaCl2+ 10% mgCl2) w.re carried out using traditional method. The use of different salt mixtures for past?rma had no statistically significant effect on the microbial counts and residual nitrite of the final product. The a* and b* values w.re affected by this treatment. The salt mixture containing CaCl2or CaCl2+ mgCl2significantly decreased the p H values and sensory scores. The eighteen volatile compounds w.re affected by the salt mixtures. Na~+, K~+, Ca2+, and mg2+had a certain increase depending on their ratio in the salt mixtures. The highest Cathepsin activity in all past?rma samples w.s observed in Cathepsin B + L. The salt mixture w.th NaCl + KCl + CaCl2+ mg Cl2increased acid lipase activity. How.ver, this mixture had no significant effect on neutral lipase activity.

关键词：

Protection against Covid-19 by BNT162b2 Booster across Age Groups

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

四川生理科学杂志 2021年第10期43卷 1810-1810页

作者： Yinon m bar-On From the Department of Plant and Environmental Sciences Weizmann Institute of Science Rehovot (Y.M.B.-O. R.M.) Technion-Israel Institute of Technology Haifa (Y.G.) the Department of Statistics and Data Science Hebrew University of Jerusalem (M.M.) and Israel Ministry of Health (O.B. S.A.-P. N.A.) Jerusalem the Biostatistical and Biomathematical Unit Gertner Institute for Epidemiology and Health Policy Research Sheba Medical Center Ramat Gan (L.F. A.H.) and the Sackler Faculty of Medicine Tel Aviv University Tel Aviv (L.F. A.H.) - all in Israel.

Background:After promising initial results from the administration of a third(booster)dose of the BNT162b2 messenger RNA vaccine(Pfizer-BioNTech)to persons 60 years of age or older,the booster campaign in Israel w.s gradually expanded to persons in younger age groups w.o had received a second dose at least 5 months ***:w. extracted data for the period from July 30 to October 10,2021,from the Israel ministry of Health database regarding 4,696,865 persons 16 years of age or older w.o had received tw. doses of BNT162b2 at least 5 months *** the primary analysis,w. compared the rates of confirmed coronavirus disease 2019(Covid-19),severe illness,and death among those w.o had received a booster dose at least 12 days earlier(booster group)w.th the rates among those w.o had not received a booster(nonbooster group).In a secondary analysis,w. compared the rates in the booster group w.th the rates among those w.o had received a booster 3 to 7 days earlier(early postbooster group).w. used Poisson regression models to estimate rate ratios after adjusting for possible confounding factors.

关键词： Israel younger founding