Review on the oversea studies on informal settlement and enlightenments from them;
国外非正规聚落研究进展及启示
The aim of this thesis is in search of the catalysts which are moderate and stable for preparing mono-dispersed macroporous materials, by means of syndiotactic polymerization of styrene.
为了在纳米至亚纳米受限空间中进行乙烯基芳烃间规聚合,制备单分散三维有序大孔材料,本论文以寻找催化活性适中但不能过高、且平稳的催化剂为目的,设计合成了三类非茂金属催化剂,包括不同配体结构的β-二酮钛类催化剂,2-羟基苯酮钛类催化剂和双核β-二酮类催化剂,其中β-二酮钛类(bfa)TiCl_3、(bfa)_2TiCl_2,2-羟基苯酮钛类[(hmbp)_2TiCl_2],双核β-二酮类{[xyl(acac)_2]TiCl_2}_2、[xyl(acac)_2](TiCl_3)_2,未见在苯乙烯基单体聚合上的应用报道。
The syndiospecific polymerization of styrene was carried out via β-diketonate titanium complex/MAO.
以β-二酮钛配合物 /MAO催化苯乙烯间规聚合 。
Syndiospecific polymerization of styrene was catalyzed by Cp*Ti(CH2SiMe3)3/B(C6F5)3 (Cp*=pentamethylcyclopentadienyl).
考察了新型催化剂Cp*Ti(CH2SiMe3)3/B(C6F5)3催化苯乙烯间规聚合的性能。
Study on the Syndiotactic Polymerization Process of Styrene by Metallocene Catalysts;
茂金属催化苯乙烯间规聚合过程研究
Syndiotactic Polymerization of Styrene with Homogeneous Metallocene Catalysts;
均相茂金属体系催化苯乙烯间规聚合过程研究
Novel Non-Metallocene Catalysts for Styrene Syndiotactic Polymerization;
新型非茂类苯乙烯间规聚合催化剂的合成及应用
Reactor Granule and Alloy Technology for Preparation of Syndiotactic Polystyrene;
间规聚苯乙烯反应器内颗粒化及合金化研究
Synthesis and Characterization of Syndiotactic Polystyrene Graft Copolymers;
以间规聚苯乙烯为主干的接枝共聚物的合成与表征
Growth rules of rabbit adipose stromal cells combined with polylactic-co-glycolic acid film
聚乳酸-聚羟基乙酸膜体外复合兔脂肪源性间充质细胞的生长规律
Those with a random distribution of configuration are termed atactic.
构型无规分布的聚合物叫无规聚合物。
stereoblock polymer
立构规正嵌段聚合物
equitactic polymer
全同间同等量聚合物
threo-disyndiotactic polymer
苏型双间同立构聚合物
erythro-disyndiotactic polymer
赤型双间同立构聚合物
Particles do not coalesce with other particles.
颗粒之间互不聚合。
Study on the Polymerization and Spinning of Poly (M-phenyleneisophthalamide);
间位芳香族聚酰胺聚合及纺丝的研究
The Study of Anionic Polymerization on Controlling the Degree of Tacticity of Polymers and Synthesis of Block Polymers;
阴离子聚合控制聚合物立构规整性及其嵌段共聚物的合成研究
A similar trend to scientific cooperation on a global scale was apparent in many other fields, like meteorology, astronomy, nuclear fusion, and space.
在许多其他如气象学、天文学、核聚变以及空间科学领域中也同样存在全球规模的科学合作。
Study of AE Reaction Kinetics --Reaction Speed of EO Change with Time
脂肪醇聚氧乙烯醚合成反应的动力学研究——环氧乙烷加成速率随时间的变化规律
Agglomeration and Dispersion:Integration of Intra-urban Commuting Cost and External Technological Externalities;
集聚与分散:新经济地理学模型与城市内部空间结构、外部规模经济效应的整合研究
Spatial Integration and Planning of the Valley Cities in the Rapid Agglomeration and Development- A Case Study in Lanzhou City;
快速集聚发展过程中的河谷型城市的空间整合与规划——以兰州市为例
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