SUBSTITUTI相关论文
Chiral Separation Abilities of Homogeneously Synthesized Cellulose 3,5-Dimethylphenylcarbamates: Inf
A series of cellulose 3,5-dimethylphenylcarbamates(CDMPCs) with different degrees of substitution(DS) and degrees of pol......
Two novel mutations of the LDL receptor gene associated with familial hypercholesterolemia in a Chin
Background Familial hypercholesterolemia (FH) is a type of dominant autosomal disease that causes high levels ofplasma ......
Birhodomolleins A-C(1-3),three novel diterpenoids dimerized from two grayanane diterpenes through an oxygen bridge,were ......
Microstructure and Ferroelectric Properties of (Bi_(0.9)Ho_(0.1))_(3.999)Ti_(2.997)V_(0.003)O_(12) T
The (Bi0.9Ho0.1)3.999Ti2.997V0.003O12 (BHTV) films have been prepared on Pt/Ti/SiO2/Si substrates by solgel method. The ......
The Ag-doped BaTiO3(BATO) polycrystalline powders were fabricated by Sol-Gel method. Further modification by rare earth ......
Theoretical study on the geometries and electronic properties of new conjugated compounds based on thiophene and phenyle......
The spiro[ l-bromo-4-l-mentholoxy-5-oxo-6-oxabicyclo[3.1.0] hexane-2,3’-(4’-ethoxy-5’-l-men-thyloxybutyrolactone) ] ......
The discovery of a SerieS of intron-encoded small nucleolar RNA(SnoRNA)has been a great progress in molecular biology si......
在不同烧结气氛下制备了Y和YF3掺杂钛酸钡材料，借助于XRD、SEM、XRF和阻温测试分析仪，研究了烧结气氛对Y和YF3掺杂钛酸钡材料结构和......
电力负荷预测的准确度与负荷历史数据质量密切相关。现在,负荷数据一般由SCADA系统提供,所提供数据常常出现缺失现象。研究了一种......
Taking advantage of company survey data,this paper examines the responsiveness of enterprises in manufacturing sectors t......
Zn~(2+)-或Ti~(4+)与Mg_( 1.6 )Zn_( 0.4 )Al_4Si_5O_( 18 )和Mg_( 1.8 )的名字的作文代替了堇青石Ti_( 0.2 )Al_( 4.4 )Si_( 4.6 ......
广告翻译的地位在经济发展全球化的推动下显得尤为重要。从语际转换的四个模式出发,即对应式翻译、平行式翻译、替换式翻译和冲突......
以异溴丁酸羟乙酯为引发剂、溴化亚铜和2，2′-联吡啶为催化剂和配体，引发丙烯酸琥珀酰胺酯（NAS）进行原子转移自由基聚合，得到的聚丙烯酸......
高校教师的利益需求分为物质需求和精神需求两部分,它符合人们一般的需求规律:物质需求与精神需求之间存在替代性、互补性和交融性......
由于对科技进步范畴认识的含混不清,致使很多关于科技进步贡献测算的结果差异较大以及基于此测算所提出的政策建议没有太大价值.有......
对农村富余劳动力转移起重要影响作用的因素一般为：乡村从业人员数、乡村从业人员中二、三产业人员数、实际受培训人数和培训后实现......
全面实施营改增,是深化财税体制改革、推进经济结构调整和产业转型的重头戏,是对工程公司发生重大影响的创新改革。说明了营改增的......
采用共沉淀法制备了六铝酸盐催化剂CeCoAl11O19,通过测试催化剂的活性,研究了焙烧温度和掺杂金属离子对其催化燃烧性能的影响。研......
This article analyzes the three categories of cohesive relations divided by Halliday and Hasan in the book"Cohesion in E......
The polyquinolines with 2,2’-pyridylquinoline as bidentate and 2,6-diquinolylpyridine as tridentate ligand have been pr......
本文首先以大量的自然地理现象为依据,归纳、总结了自然地理现象随时间演化的节律性;然后,又从纷杂的节律性现象中,进行了抽象的概......
秸秆及天然牧草是我国养牛的主要饲料，但喂秸秆及牧草营养不全，需要补饲，只要补饲得当就可增加干物质食入量。替代率是表示食入量的重......
取保候审、监视居住是我国刑事诉讼法规定的两种主要的非羁押性强制措施。本文在考察国外实践做法的基础上,分析了审前羁押代替性......
