检索结果-南通市图书馆

维普期刊数据库博看期刊

Analysis of Dynamic Accumulation of Three Types of Glutenin Subunits and Their Content in Relation to Sedimentation Value in Common Wheat

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2006年第2期5卷 155-160页

作者： HAO Jun-jie CHEN Jun-ying CHEN xin-jian CUI Dang-qun cheng xi-yong College of Agronomy Henan Agricultural University Zhengzhou 450002 P.R.China Institute of Plant Protection Henan Academy of Agricultural Sciences Zhengzhou 450002 P.R. China

The biosynthetic time and accumulations of A-, B-, and C-type glutenin subunits in 7 winter wheat cultivars with different quality （strong, medium, weak gluten） were analyzed by SDS-PAGE. The results showed that no glutenin subunit was observed within 8 d after anthesis. Parts or all A-, B-, and C-type subunits appeared around day 12 in different cultivars. Other A-, B-, and C-type subunits appeared gradually. The accumulation of A-, B-, and C-type subunits fluctuated before maturity. The results of analysis of correlation between the ratios of A/T （total content of glutenin subunits）, A/C, AJ （B＋C）, （A＋B）/C, and （A＋B）/T and SDS-sedimentation value suggested that they were more significant. The negative correlation between the ratio of （B＋C）/T and SDS-sedimentation value was more significant, and the correlations between the ratio C/T and the SDS-sedimentation value were significantly negative.

关键词： wheat glutenin subunits dynamic accumulation quality

Integration of urchin-like MnCo_(2)O_(4)@C core–shell nanowire arrays within porous copper current collector for superior performance Li-ion battery anodes

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第2期43卷 599-611页

作者： Xue-Ru Zhang Qiong Wu yong Zhang xi-Fei Li Ting xie Yu-cheng Wu Instrumental Analysis Center Hefei University of TechnologyHefei230009China Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei230009China School of Materials Science and Engineering Hefei University of TechnologyHefei230009China Institute of Advanced Electrochemical Energy Xi’an University of TechnologyXi’an710048China

Spinel MnCo_(2)O_(4) is a promising energy storage candidate as anode materials in lithium-ion batteries owing to synergistic effects of two intrinsic solid-state redox ***,low conductivity,poor rate capacity and rapid capacity fading have seriously impaired its practical *** overcome the inferiorities,urchin-like MnCo_(2)O_(4)@C core–shell nanowire arrays have been fabricated directly within a porous copper current collector via a facile hydrothermal method followed by a chemical vapor deposition carbonization *** a typical nanowire,the core is composed of interconnected MnCo_(2)O_(4)nanoparticles and the shell shows as a thin amorphous carbon *** integrated MnCo_(2)O_(4)@C/Cu structure could act as working anodes without using additives or polymer *** MnCo_(2)O_(4)@C/Cu possesses slightly longer Li-ion insertion/desertion pathway than that of MnCo_(2)O_(4)/Cu,the carbon shell could effectively prevent the pulverization of MnCo_(2)O_(4) and lower down charge transfer resistance and actively participate in Li-ion *** rearrangement of carbon atoms during lithiation/delithiation cycling could inhibit the formation of passive solid electrolyte interphase *** a result,the MnCo_(2)O_(4)@C/Cu electrode presents superior rate capacity(600 mAh·g^(−1) at 1 A·g^(−1)) and better stability(797 mAh·g^(−1) after 200 cycles at 100 mA·g^(−1)).The excellent reversible Li ion storage capacity,cycling stability and rate capacity endow MnCo_(2)O_(4)@C/Cu great potential as stable and high output integrated anode materials in Li-ion batteries.

关键词： MnCo_(2)O_(4)@C Urchin-like nanowire arrays Core-shell Integrated anode materials Lithium-ion batteries

小麦TaCLC-e-3AL基因功能分析及互作蛋白鉴定

在线全文

学校读者我要写书评

暂无评论

植物营养与肥料学报 2024年第5期30卷 835-847页

作者：宋腾钊毛培钧杨瑞鹏李冰冰刘腾飞谢玉民李妍珂袁梦营程西永许海霞神农种业实验室/河南农业大学农学院/省部共建小麦玉米作物学国家重点实验室河南郑州450002

【目的】分析小麦氯离子通道TaCLC-e-3AL基因功能并鉴定其互作蛋白,以解析TaCLC-e-3AL参与小麦响应低氮胁迫的作用机制。【方法】以拟南芥AtCLC-e氨基酸序列为参考序列,通过BlastP对小麦基因组数据库进行比对,获得TaCLC-e-3AL(TraesCS3A... 详细信息

【目的】分析小麦氯离子通道TaCLC-e-3AL基因功能并鉴定其互作蛋白,以解析TaCLC-e-3AL参与小麦响应低氮胁迫的作用机制。【方法】以拟南芥AtCLC-e氨基酸序列为参考序列,通过BlastP对小麦基因组数据库进行比对,获得TaCLC-e-3AL(TraesCS3A02G253600)、TaCLC-e-3B(TraesCS3B02G285500)和TaCLC-e-3DL(TraesCS3D02G254500)3个基因,分析其基因结构和系统进化关系。将TaCLC-e-3AL-p1300-GFP融合蛋白表达载体转化至小麦原生质体中,分析TaCLC-e-3AL的亚细胞定位特征;采用转基因拟南芥进行异源功能验证,利用酵母双杂交筛选与TaCLC-e-3AL相互作用的蛋白。【结果】生物信息学分析表明,TaCLC-e-3AL编码的蛋白含有11个跨膜结构域,与乌拉尔图小麦TuCLC-e同源性最高。组织表达量预测分析表明,TaCLC-e-3AL基因在小麦的叶片和茎部表达量较高。顺式作用元件分析表明,其可能响应光、激素以及逆境胁迫等信号。亚细胞定位显示,TaCLC-e-3AL蛋白经内质网分选后定位于叶绿体内。过表达TaCLC-e-3AL转基因拟南芥植株在低氮胁迫条件下可以储存更多的NO_(3)^(-),并能够维持植株体内NO_(3)^(-)/Cl^(-)的稳态,不引起植株根长和鲜重的显著变化。酵母双杂交文库筛选显示TaCLC-e-3AL与水通道、叶绿体a/b结合蛋白和电压依赖性阴离子通道3个蛋白互作,表明TaCLC-e-3AL可能与它们协同参与干旱胁迫响应、光合作用、信号传导等生物过程。【结论】小麦氯离子通道蛋白TaCLC-e-3AL位于叶绿体内。TaCLC-e-3AL基因转化至拟南芥中过表达,在低氮胁迫条件下较野生型可以在植株体内储存更多的NO_(3)^(-),并维持NO_(3)^(-)/Cl^(-)的值,表明TaCLC-e-3AL可能调控Cl^(-)和NO_(3)^(-)的协同运输。TaCLC-e-3AL通过与水通道蛋白、叶绿体a/b结合蛋白、电压依赖性阴离子通道蛋白互作,参与小麦的干旱胁迫、光合作用和离子胁迫应答。

关键词：小麦氯离子通道蛋白 TaCLC-e-3AL 功能分析互作蛋白

A Time-Domain Numerical Simulation for Free Motion Responses of Two Ships Advancing in Head Waves

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2024年第3期38卷 519-530页

作者： PAN Su-yong cheng yong School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

The constant panel method within the framework of potential flow theory in the time domain is developed for solving the hydrodynamic interactions between two parallel ships with forward *** solving problems within a time domain framework,the free water surface needs to simultaneously satisfy both the kinematic and dynamic boundary conditions of the free water *** provides conditions for adding artificial damping *** the Runge−Kutta method to solve equations related to *** upwind differential scheme is used in the present method to deal with the convection terms on the free surface to prevent waves *** the comparison with the available experimental data and other numerical methods,the present method is proved to have good mesh convergence,and satisfactory results can be *** constant panel method is applied to calculate the hydrodynamic interaction responses of two parallel ships advancing in head *** simulations are conducted on the effects of forward speed,different longitudinal and lateral distances on the motion response of two modified Wigley ships in head *** further investigations are conducted on the effects of different ship types on the motion response.

关键词： ship motions time domain simulation forward speed different distances wave loads

Homological Transfer between Additive Categories and Higher Differential Additive Categories

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第5期40卷 1325-1344页

作者： xi TANG Zhao yong HUANG School of Science Guilin University of Aerospace TechnologyGuilin 541004P.R.China Department of Mathematics Nanjing UniversityNanjing 210093P.R.China

Given an additive category C and an integer n≥*** higher differential additive category consists of objects X in C equipped with an endomorphism ϵ_(X)satisfying ϵ_(X)^(n).Let R be a,finite-dimensional basic algebra over an algebraically closed field and T the augmenting functor from the category of finitely generated left R-modules to that of finitely generated left R/(t^(n))-*** is proved that a finitely generated left R-module M isτ-rigid(respectively,(support)τ-tilting,almost completeτ-tilting)if and only if so is T(M)as a left R[t]/(t^(n))-***,R isτm-selfinjective if and only if so is R[t]/(t^(n)).

关键词： Higher differential objects Wakamatsu tilting subcategories G_(ω)-projective modules sup-portτ-tilting modules τ_(m)-selfinjective algebras precluster tilting subcategories

“Blocking and rebalance”mechanism-guided design strategies of bimetallic doped 2D a-phosphorus carbide as efficient catalysts for N_(2) electroreduction

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第10期97卷 68-78,I0003页

作者： cheng He Jianglong Ma Shen xi Wenxue Zhang State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi'an Jiaotong UniversityXian 710049ShanxiChina School of Materials Science and Engineering Chang'an UniversityXi'an 710064ShaanxiChina

Compared to single atom catalysts(SACs),the introduction of dual atom catalysts(DACs)has a significantly positive effect on improving the efficiency in the electrocatalytic nitrogen reduction reaction(NRR)which provides an environmental alternative to the Haber-Bosch ***,the research on the mechanism and strategy of designing bimetallic combinations for better performance is still in its early ***,based on"blocking and rebalance"mechanism,45 combinations of bimetallic pair dopedα-phosphorus carbide(TM_(A)TM_(B)@PC)are investigated as efficient NRR catalysts through density functional theory and machine learning *** a multi-step screening,the combinations of TiV,TiFe,MnMo,and FeW exhibit highly efficient catalytic performance with significantly lower limiting potentials(-0.17,-0.18,-0.14,and-0.30 V,respectively).Excitingly,the limiting potential for CrMo and CrW combinations is 0 V,which are considered to be extremely suitable for the NRR *** mechanism of"blocking and rebalance"is revealed by the exploration of charge transfer for phosphorus atoms in electron blocking ***,the descriptorφis proposed with machine learning,which provides design strategies and accurate prediction for finding efficient *** work not only offers promising catalysts TM_(A)TM_(B)@PC for NRR process but also provides design strategies by presenting the descriptorφ.

关键词： DACs Nitrogen reduction reaction 2D a-phosphorus carbide Inherent attributes Machine learning

Sedimentary Environment and Mineralization of the Black Shale Polymetallic Layer in the Early Cambrian,SW China:Constraints from in situ LA-ICP-MS Analysis of Pyrite

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2024年第2期98卷 416-429页

作者： YANG Zhen FU yong LI Chao CAI xi GUO Chuan College of Eco-Environmental Engineering Guizhou Minzu UniversityGuiyang 550025China College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China Key Laboratory of Karst Georesources and the Environment Ministry of EducationGuizhou UniversityGuiyang 500025China National Research Center for Geoanalysis Chinese Academy of Geological SciencesBeijing 100037China

A polymetallic layer is usually developed at the bottom of the early Cambrian black shale in Guizhou *** mineral that makes up the polymetallic layer is related to the sedimentary *** analyze the differentiation mechanism between polymetallic deposits(Ni-Mo and V),the Zhijin Gezhongwu profile located in the outer shelf and the Sansui Haishan V deposit located in the lower slope are selected to study the in situ sulfur isotopes and trace elements of *** results show that δ^(34)S values of pyrite vary widely from−7.8‰to 28‰in the Gezhongwu profile,while the δ^(34)S values are relatively uniform(from 27.8‰to 38.4‰)in the Haishan *** isotopic S composition is consistent with the transition that occurs in the sedimentary phase from the shelf to the deep sea on the transgressive Yangtze platform;this indicates that the δ^(34)SO_(4)^(2−)values in seawater must be differently distributed in depositional *** sulfur in the Ni-Mo layer is produced after the mixing of seawater and hydrothermal fluid,while the V layer mainly originates from ***,the Ni-Mo and V deposits have been differentiated primarily on the basis of the combined effect of continental weathering and hydrothermal fluid.

关键词： sedimentary environment black shale polymetallic layer pyrite early Cambrian

The study of intelligent algorithm in particle identification of heavy-ion collisions at low and intermediate energies

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第2期35卷 170-182页

作者： Gao-Yi cheng Qian-Min Su xi-Guang Cao Guo-Qiang Zhang School of Electronic and Electrical Engineering Shanghai University of Engineering ScienceShanghai 201620China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China

Traditional particle identification methods face timeconsuming,experience-dependent,and poor repeatability challenges in heavy-ion collisions at low and intermediate *** urgently need solutions to the dilemma of traditional particle identification *** study explores the possibility of applying intelligent learning algorithms to the particle identification of heavy-ion collisions at low and intermediate *** intelligent algorithms,including XgBoost and TabNet,were selected to test datasets from the neutron ion multi-detector for reaction-oriented dynamics(NIMROD-ISiS)and Geant4 ***-based machine learning algorithms and deep learning algorithms *** show excellent performance and generalization *** additional data features besides energy deposition can improve the algorithm’s performance when the data distribution is *** learning algorithms can be applied to solve the particle identification problem in heavy-ion collisions at low and intermediate energies.

关键词： Heavy-ion collisions at low and intermediate energies Machine learning Ensemble learning algorithm Particle identification Data imbalance

Review on recent advances of inorganic electrode materials for potassium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Tungsten 2024年第1期6卷 174-195页

作者： Jian-Zhen xiong Ze-cheng Yang xin-Liang Guo xi-Ying Wang Chao Geng Zong-Fu Sun An-yong xiao Quan-Chao Zhuang Ya-xin Chen Zhi-cheng Ju School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China

Rechargeable potassium-ion batteries(PIBs)have great potential in the application of electrochemical energy storage devices due to the low cost,the abundant resources and the low standard reduction potential of *** electrode materials are the key factors to determine the electrochemical performance of devices,relevant research is being carried out to build high-performance *** recent years,significant progress has been made in the study of the design of inorganic electrode ***,we review the cathode materials(Prussian blue and its analogues,layered oxides and poly anionic compounds)and the anode materials(antimony-based,selenium-based and bismuth-based compounds).On the basis of previous work,the structural design principles for improving the performance of electrode materials are reasonably *** the same time,the problems that need to be solved in the preparation of electrode materials and the direction of future research and improvement are pointed out.

关键词： Inorganic electrode materials Potassium-ion batteries Cathode materials Anode materials