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Cyanocobalamin(CNCbl) is a paradigm system for the study of excited electronic states and biological cofactors including......
Synthesis and biological evaluation of new pyrrolopyrazinone compounds as potential antitumor agents
A series of pyrrolo[1,2-a]pyrazinone compounds(5a-9f) were synthesized,and their cytotoxic activity against SKOV-3,A549.......
THE IONIZATION OF EXCIPLEXES FORMED BY CYANO-CONTAINING OLEFINIC COMPOUNDS AND N,N-DIMETHYL-p-TOLUID
The absorption spectra, fluorescence spectra and photoconduction of some systems com-posed of different cyano-containin......
Radiation-processing technology is a new branch of hi-tech development with wide application and promising potentiality......
To study the economic advantages of hydrogen internal combustion engine,an experimental study was carried out using a 2.......
Preparation and characterization of PVDF-glass fiber composite membrane reinforced by interfacial UV
A novel inorganic–organic composite membrane,namely poly(vinylidene fluoride) PVDF-glass fiber(PGF) composite membrane,......
A new fixed carrier membrane material VSA-SA for CO2 separation was preparedthrough the chemical modification of PVSA. T......
THE KINETICS OF METHYL METHACRYLATE POLYMERIZATION INITIATED BY THE VOLATILE PRODUCTS OF A METHYL ME
It is found that the volatile products of methyl methacrylate plasma can very actively initiate the polymerization of th......
Pulmonary surfactant has long been recognized as a potential factor in the development and perpetuation of the acute re......
Distribution patterns of the contents of five biologically activate ingredients in the root of Scute
As an important herbaceous plant, Scutellaria baicalensis Georgi(Chinese skullcap) is geographically widespread and comm......
Polypropylene microporous membranes were treated with plasma in a mixture of N2 and H2 (1:2 in volume). Attenuated total......
Novel ionic liquids with dual acidity, of which the cation contains Brnsted acidity and anions contain Lewis acidity wer......
Galling is one of the most familiar failure forms for tubing and casing connections. It has been regarded as a key probl......
Evaluation of the clenbuterol imprinted monolithic column prepared by reversible addition-fragmentat
To make more homogenous organic monolithic structure,reversible addition-fragmentation chain transfer(RAFT) process was ......
RARE EARTH COMPLEXES[Ln(EDBP)_2(DME)Na(DME)_3]AS CATALYSTS FOR THE POLYMERIZATION OF 2,2-DIMETHYLTRI
The biphenol based discrete ion-pair rare earth complexes,[Ln(EDBP)_2(DME)Na(DME)_3][Ln=Er(1),Yb(2), Sm(3)],were prepare......
Interview with Dai Buzhong,the president of JinFeng Textile Machinery Manufacturing Co.,Ltd.Journalist:In your opinion,w......
Hydrogen diffusion in the wall of hydrogenation reactor for three situations,i.e.operating,normal shutdown and abnormal ......
为了提高中小模数直齿圆柱齿轮视觉测量仪齿距测量精度,分析了在视觉坐标系内齿轮基圆定位偏心对齿距测量误差的影响规律。通过理......
Barrett’s oesophagus(BO)is a usually indolent condition that occasionally requires endoscopic therapy.Radiofrequency ab......
The general two—step protocol for rice anther culture is time and labor consuming. Since 1982, there have been some pa......
Zeatin (Z) and zeatin riboside (ZR) are natu-rally-occurring and predominant transportablecytokinins in some higher pla......
Detection of parathion methyl using a surface plasmon resonance sensor combined with molecularly imp
An ultra-sensitive and highly selective parathion methyl(PM) detection method by surface plasmon resonance(SPR) combined......
对初审环节中稿件相关材料和信息检查、稿件质量初评、稿件查新检索及初审时滞把握等步骤中存在的问题和要求进行分析和讨论,并从......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为了解激光波长对含能材料起爆阈值的影响，降低含能材料的激光起爆能量，提高激光激励源的小型化程度，采用飞行时间质谱技术和Bruccton......
The capillary absorption of water by unsaturated cement-based material is the main reason of degradation of the structur......
文章在简介陈云贤版《中观经济学》的主题内容、作者团队及雍和明教授英译团队的基础上,以译作其中的经济学术语英译为例,讨论当代......
遥感影像非监督分类对初始点十分敏感。以K均值(K-means)算法为例,利用各种遥感影像实验比较5种初始化方法(随机法、Forgy法、Macq......
利用上、下解与拟上下解方法讨论常微分方程问题时，文献均足假没上、下解与拟上下解是存在的，进而讨论方程的解．文章给出一阶常微分方......
语文课堂在新课改之后出现了一个崭新的局面:教师的教学理念更新了,教学方式方法改进了,师生之间角色的转换实现了。但是,地处偏远......
研究了不同起始细胞密度与硅酸盐浓度对海洋卡盾藻（Cm）与中肋骨条藻（Sc）及锥状斯氏藻（St）之间种间竞争的影响,利用竞争抑制参数对相互间......
针对雁口山典型的浅埋大断面隧道,在高原复杂的地质条件下,考虑增大混凝土的厚度控制洞室变形,达到稳定隧道的目的。基于FLAC^3D模......
“流体输配管网”是建筑环境与设备工程专业课程重组后设置的一门专业基础课，是介绍输配管网原理和管网系统设计、调试和调节基本理......
The singularly perturbed initial boundary value prob- lems for the reaction diffusion system are raised. Firstly, under ......
人大掌控政府预算审批权是民主政治的基本要求，也是预防腐败、增进民众信任、建设社会主义和谐社会的重要保障。但目前我国在人大代......
填料塔是化工工业中最常见气液分离设备之一，本文介绍了选择填料塔的设计条件，论述了当前最新的塔内填料、液体分布器、进气初始分布......
为探讨新型引发体系对淀粉接枝共聚反应的影响,以玉米淀粉为原料,采用过硫酸铵-亚硫酸氢钠引发体系合成了淀粉接枝丙烯酸丁酯共聚......
以南水北调东线江苏段淮安四站新吹填场地的吹填淤泥为研究对象,进行了一系列的室内自重沉积试验,研究吹填淤泥在静水条件下的沉积......
研究具非线性强耗散项的发展方程utt-γuxx=β(uxt)x的初边值问题解的整体非存在性和blow up.借助于特征函数法和Jensen不等式,证......
“课程思政”建设是当前高校思想政治工作的一个重点内容。在高校“课程思政”建设中,必须遵循规律性,把握原则性,掌握要点性,才能......
通过分析中国汽车零部件产业现状和发展前景,揭示了汽车零部件产业蕴藏的创业投资商机.论述了中国汽车零部件产业创业投资行为的定......
研究了LDMOS在ESD放电过程中的机理及二次触发的现象,通过对LDMOS器件关键尺寸的优化设计与结构的改进,结合器件计算机辅助设计技......
亨利·詹姆斯的《一位女士的画像》讲述的是主人公伊莎贝尔在跨文化背景下从天真无知到成熟自省的成长蜕变，而其表兄拉尔夫......
针对可能性聚类对初始化参数设置依赖性较强的问题，提出一种基于中心自动融合的可能性聚类算法，并证明了算法中尺度因子的多尺度性质......
本文推广了Fritz John关于一维一阶严格双曲型方程组初始问题奇异性的某些结果，得到了系数具有奇异性的方程的初始问题关于奇异性的......
以实际齿廓公法线上的距离为齿廓间隙,提出了一种修正齿形针摆传动初始间隙的准确计算方法,并开发了相应的计算程序,计算了汽车座......
与电磁机构相同，开关设备的永磁机构在分／合闸过程中都是采用电磁操动来完成开关设备的关合与断开。因此，始动安匝的研究可为机构的优......
在分析了路面冷铣刨机履带行走机构张紧缓冲装置工作原理的基础上．系统地介绍了履带行走机构张紧缓冲装置主要设计参数的确定及计算......
针对三维造型技术中的关键技术，深度图像的匹配，本文提出了一种得到匹配初值的新方法“可视化匹配”。文中首先提出了“深度图像可视......
