检索结果-南通市图书馆

Synthesis of energetic coordination polymers based on 4-nitropyrazole by solid-melt crystallization in non-ionization condition

引用

Defence Technology（防务技术） 2023年第10期28卷 13-22页

作者： Ting-wei Wang shu Bu Kun Wang Lu Zhang Zhen-xin Yi shun-guan zhu Jian-guo Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China School of Chemical Engineering Nanjing University of Science and Technology200 Xiaolingwei StreetXuanwuNanjing210094China Department of Chemistry Laboratory of Structure and Functional Regulation of Hybrid MaterialsAnhui UniversityMinistry of EducationHefei230601China

Based on the theory of crystallization,a solvent-free solid-liquid phase crystallization method called solid-melt crystallization was designed to prepare energetic coordination *** target compounds[Cu(NPyz)_(4)NO_(3)]·NO_(3)(ECPs-1)and Cu(NPyz)_(4)(ClO_(4))_(2)(ECCs-2)were prepared through programmed heating and cooling by using 4-nitropyrazole(NPyz),(Cu(NO_(3))_(2)·5H_(2)O and Cu(ClO_(4))_(2)·5H_(2)O) as raw *** addition,crystallization pre-experiments and annealing experiments also verified the feasibility of the *** structures were confirmed by IR,elemental analysis,single-crystal X-ray diffraction and powder X-ray *** physicochemical properties and sensitivity test results showed that ECCs-2 has better thermal stability(T_(d)=221℃),while ECPs-1 is less sensitive to mechanical stimuli(IS=12 J,FS=240 N).Calculations based on EXPLO5 and the Kamlet-Jacobs equation showed that ECCs-2 has more considerable detonation performance(P=25.2 GPa,D=7.5 km/s).In comparison,the more intuitive results from the HN test,flame test,thermal resistance test and lead plate explosion test revealed that ECCs-2 has an“acceptable”detonation *** laser detonation test also showed that ECCs-2 is a promising excellent laser detonation material(E=408 mJ,P=24 W,τ=17 ms).

关键词： 4-Amino-1,2,5-oxadiazole-3-carbohydrazide Crystallization Coordination polymers Laser Primary explosives

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

Parallel programming characteristics of a DSP-based parallel system

引用

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第10期7卷 1669-1675页

作者： GAO shu guo Qing-ping School of Computer Science Wuhan University of Technology Wuhan 430063 China

This paper firstly introduces the structure and working principle of DSP-based parallel system, parallel accelerating board and SHARC DSP chip. Then it pays attention to investigating the system’s programming characteristics, especially the mode of communication, discussing how to design parallel algorithms and presenting a domain-decomposition-based complete multi-grid parallel algorithm with virtual boundary forecast (VBF) to solve a lot of large-scale and complicated heat problems. In the end, Mandelbrot Set and a non-linear heat transfer equation of ceramic/metal composite material are taken as examples to illustrate the implementation of the proposed algorithm. The results showed that the solutions are highly efficient and have linear speedup.

关键词： Parallel algorithm Multi-grid Domain decomposition Virtual boundary forecast (VBF) DSP-based parallel system

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

Weighted gene co-expression network analysis identiffes potential regulators in response to Salmonella Enteritidis challenge in the reproductive tract of laying ducks

引用

Journal of Integrative Agriculture 2022年第8期21卷 2384-2398页

作者： ZHANG Yu LUO shu-wen HOU Li-e GU Tian-tian zhu guo-qiang Wanwipa VONGSANGNAK XU Qi CHEN guo-hong Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education Yangzhou UniversityYangzhou 225009P.R.China Jiangsu Key Laboratory of Zoonosis Yangzhou UniversityYangzhou 225009P.R.China Department of Zoology Faculty of ScienceKasetsart UniversityBangkok 10900Thailand

Salmonella Enteritidis(SE)is a zoonotic and vertically transmitted pathogen,often colonized in the reproductive tract of adult poultry,which can result in direct contamination of eggs and threaten human *** studies have revealed that some pattern recognition receptors and resistance genes were involved in regulating immune responses to SE invasion in ***,the role of these immune response genes was not independent,and the interactions among the genes remained to be further *** this study,SE burden and colonization were determined in reproductive tissue after the ducks were SE-infected,and RNA-sequencing was performed to construct co-expression networks by weighted gene co-expression network analysis(WGCNA).The result showed that SE could be isolated from 22% of infected-birds in any segment of the reproductive tract and the SE was readily colonized in the stroma,small follicle,isthmus,and vagina of the reproductive tracts in morbid *** top central,highly connected genes were subsequently identified three specific modules in the above four tissues at the defined cut-offs(P<0.01),including 60 new candidate regulators and 125 transcription ***,those 185 differentially expressed genes(DEGs)in these modules were ***,the hub genes(TRAF3,CXCR4 and IL13RA1)were identified to act with many other genes through immune response pathways including NF-kappaB,Toll-like receptor,steroid biosynthesis,and p53signaling *** data provide references that will understand the immune regulatory relationships during SE infection,but also assist in the breeding of SE-resistant lines through potential biomarkers.

关键词： duck Salmonella Enteritidis reproductive tract infection-related genes WGCNA

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

On the Asymptotic Uniformity of the Quantization Error for Moran Measures on R^1

引用

Acta Mathematica Sinica,English Series 2019年第9期35卷 1520-1540页

作者： San guo zhu School of Mathematics and Physics Jiangsu University of Technology

Let E be a Moran set on R1 associated with a bounded closed interval J and two sequences(nk)k =1 ^∞ and(Ck =(ck,j)j=1)^nk)k≥1. Let μ be the Moran measure on E associated with a sequence(Pk)k≥1 of positive probability vectors with Pk =(pk,j)j =1,^nk, k ≥ 1. We assume that k≥1 1≤j≤nk^inf min Ck,j>0,k≥1 1≤j≤nk^inf minCk,j>0,k≥1 1≤j≤nk ^inf min pk,j>0. For every n ≥ 1, let αn be αn n optimal set in the quantization for μ of order r ∈(0,∞) and{Pa(αn)}a∈α∈an an arbitrary Voronoi partition with respect to αn. We write Iα(α,μ):=∫Pα(αn)^d(x,αn)^τ dμ(x),α∈αn;J(αn,μ):=α∈αn^minⅠα(α,μ),J(αn,μ):=α∈αn^max Ⅰα(α,μ).We show that J(αn,μ),J(αn,μ) and en^r,r(μ)-en^r +1,r(μ) are of the same order as 1/n en^r ,r(μ), where en^r ,r(μ):=∫d(x,αn)^r dμ(x) is the nth quantization error for μ of order r. In particular, for the class of Moran measures on R1, our result shows that a weaker version of Gersho’s conjecture holds.

关键词： Moran measures quantization error Voronoi partition asymptotic uniformity

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

Recent Progress on Semi-transparent Perovskite Solar Cell for Building-integrated Photovoltaics

引用

Chemical Research in Chinese Universities 2020年第3期36卷 366-376页

作者： zhu Yivi shu Lei FAN Zhiyong HKLJST-Shenzheti Research Institute Shenzhen 518057P.R.China Department of Electronic and Computer Engineering Hong Kong University of Science and Technology(HKUST)Clear Water BayKowloonHong Kong SARP.R.China

The electricity consumption of buildings is tremendous;moreover,a huge amount of electricity is lost during *** away this consumption can significantly reduce energy demand and greenhouse effect gas *** of the low-cost and renewable solutions to this issue is to install photovoltaic panels on the buildings themselves,namely,building-integrated photovoltaics(BIPVs).Using this technology,power generation roofs,windows,and facades can harvest solar radiation and convert to electricity for building power ***-transparent perovskite solar cells(ST-PSCs)have attracted tremendous attention for the power generation windows,due to the excellent photoelectric properties,versatile fabrication methods,bandgap tunability,and ***,an overview is provided on the recent progress of ST-PSCs for BIPV,which mainly focuses on the control of perovskite morphology,optical engineering for an efficient and semi-transparent *** also summarize recent development on various transparent electrodes and present prospects and challenges for the commercialization of ST-PSCs.

关键词： Building-integrated photovoltaic Semi-transparent solar cell Perovskites solar cell

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

A Classical Theory for the Raman Optical Activity

引用

Chinese Physics Letters 1998年第10期15卷 753-755页

作者： MA shu-guo WU guo-zhen Department of Physics Tsinghua UniversityBeijing 100084 Center for Advanced Study Tsinghua UniversityBeijing 100084

A classical theory for the Raman optical activity(ROA)is proposed based on a picture that for a normal mode,atoms of a molecule with partial residual charges act as oscillating dipoles around their equilibrium positions,which also induce magnetic moments on the other atoms(dipoles),*** the resulting coupling between electric dipoles and magnetic moments of the molecule contributes to the optical *** its crude approximation,this model offers a physical essence for ROA and produces results that are of quality comparable to the complicated quantum-chemical calculation,as far as the sign of the circular intensity difference for the ROA is concerned.

关键词： dipole oscillating magnetic

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

预制混凝土构件钢筋浆锚对接连接受拉性能

引用

哈尔滨工业大学学报 2025年第1期57卷 120-127页

作者：朱张峰郭正兴黄丁丁陈耀钢南京工业大学土木工程学院南京211816 东南大学土木工程学院南京211189 江苏中南建筑产业集团有限责任公司江苏南通226124

为改善预制混凝土构件钢筋连接工艺及性能,提出一种预制混凝土构件钢筋浆锚对接连接技术。针对该新型钢筋连接的传力可靠性问题,开展了考虑钢筋直径、混凝土强度和浆锚长度变化的接头单向拉伸试验。试验结果表明,钢筋浆锚对接连接接头... 详细信息

为改善预制混凝土构件钢筋连接工艺及性能,提出一种预制混凝土构件钢筋浆锚对接连接技术。针对该新型钢筋连接的传力可靠性问题,开展了考虑钢筋直径、混凝土强度和浆锚长度变化的接头单向拉伸试验。试验结果表明,钢筋浆锚对接连接接头受拉性能由钢筋浆锚长度与帮条钢筋承载力共同控制,与混凝土强度无明显关系,表现为帮条钢筋配置相同的条件下,12 mm、14 mm直径连接钢筋试件分别在0.5l a(受拉钢筋基本锚固长度)、0.6l a钢筋浆锚长度条件下实现钢筋拉断,16 mm直径连接钢筋试件在0.6l a钢筋浆锚长度条件下发生帮条钢筋拉断。结合数据分析,建议12~16 mm直径连接钢筋浆锚长度按0.6l a控制,帮条钢筋与连接钢筋牌号相同的前提下,12~14 mm直径连接钢筋的帮条钢筋按4 C 8设计,16 mm直径连接钢筋的帮条钢筋应按6 C 8设计。同时,试验中钢筋镦头构造可保证钢筋充分锚固,其具体尺寸可用于指导钢筋加工;螺旋筋对接头受拉性能影响不明显,可参照本次试验参数进行设计。

关键词：预制混凝土钢筋连接浆锚对接帮条钢筋受拉性能

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Design and optimization of solid rocket motor Finocyl grain using simulated annealing

引用

航空动力学报 2011年第4期26卷 917-923页

作者： All Kamran LIANG guo-zhu School of Astronautics Beijing University of Aeronautics and Astronautics Beijing 100191 China

The research effort outlined the application of a computer aided design(CAD)-centric technique to the design and optimization of solid rocket motor Finocyl(fin in cylinder) grain using simulated *** proper method for constructing the grain configuration model,ballistic performance and optimizer integration for analysis was *** is a complex grain configuration,requiring thirteen variables to define the *** large number of variables not only complicates the geometrical construction but also optimization *** representation encapsulates all of the geometric entities pertinent to the grain design in a parametric way,allowing manipulation of grain entity(web),performing regression and automating geometrical data *** to avoid local minima and efficient capacity to explore design space makes simulated annealing an attractive choice as *** is demonstrated with a constrained optimization of Finocyl grain geometry for homogeneous,isotropic propellant,uniform regression,and a quasi-steady,bulk mode internal ballistics model that maximizes average thrust for required deviations from neutrality.

关键词： solid rocket motor Finocyl(fin in cylinder) grain internal ballistics simulated annealing computer aided design

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

Negative Poisson's ratio and peripheral strain of an NPR anchor cable

引用

Journal of Mountain Science 2022年第8期19卷 2435-2448页

作者： TAO Zhi-gang XU Hao-tian REN shu-lin guo Long-ji QIN Ke zhu Yi-fei State Key Laboratory for Geomechanics&Deep Underground Engineering Beijing 100083China School of Mechanics and Civil Engineering China University of Mining&TechnologyBeijing 100083China

Materials with a negative Poisson’s ratio effect perform significantly better than traditional materials for rock mass impact resistance,shear resistance,and energy *** on these advantages,a negative Poisson’s ratio anchor cable(NPR anchor cable)with high elongation and constant resistance was developed and successfully applied in the field of mine disaster ***,theoretical and experimental research on the negative Poisson’s ratio effect and peripheral strain characteristics of NPR anchor cables is currently *** study used several theories and methods,such as static tensile,peripheral strain measurement,and static negative Poisson’s ratio measurement,to investigate the radial deformation law of an NPR anchor cable and the negative Poisson’s ratio *** results elucidated constant resistance changes in an NPR anchor cable during operation,the motion of the constant resistance body in the constant resistance sleeve,and the deformation law of the constant resistance *** Poisson’s ratio characteristics of the NPR anchor cable and its superior energy absorption characteristics were verified and it provided a theoretical and experimental basis for energy absorption mechanisms of an NPR anchor cable.

关键词： NPR anchor cable Static tensile test Negative Poisson’s ratio Energy absorption

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

Pathogenesis and Immunogenicity of an Avian H9N2 Influenza Virus Isolated from Human

引用

Biomedical and Environmental Sciences 2011年第5期24卷 530-536页

作者： LIU LiQi Li Zi ZHOU JianFang zhu Yun DONG Jie ZHAO Xiang guo JunFeng shu YueLong State Key Laboratory for Molecular Virology and Genetic Engineering Chinese National Influenza CenterNational Institute for Viral Disease Control and PreventionChina CDCBeijing 102206China

Objective To investigate the pathogenesis and immunogenicity of H9N2 influenza virus A/Guangzhou/333/99 （a reassortant of G1 and G9 viruses isolated from a female patient in 1999） in a mouse model of *** Mice were infected with increasing virus *** load in the lungs and trachea was determined by EID50 *** histopathology was assessed by hematoxylin‐eosin ***‐HI antibody titers and T‐cell responses to viral HA were determined by ELISPOT and confirmed by flow *** Mice presented a mild syndrome after intranasal infection with A/Guangzhou/333/99 （H9N2） influenza *** was detected in the trachea and lungs of mice harvested on days 3,6,and 9 post‐infection.A T‐cell response to viral HA was detected on day 6 and H9 HA‐specific CD 4＋ T‐cells *** was detected after 14 days and antibody persisted for at least 28 *** Our results suggest that H9N2 （A/Guangzhou/333/99） can replicate in the murine respiratory tract without prior adaptation,and both humoral and cell‐mediated immunity play an important role in the immune response.

关键词： Avian influenza H9N2 Pathogenic characteristics Host immune responses

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：