聚合的

The asymmetric polymerization of methyl methacrylate is carried out using the chiral binaphthyl crown ether macrocyclic compounds binding n-BuLi or t-BuOK as chiral initiator at -78℃.

以手性联萘冠醚为配体，络合n-BuLi，t-BuOK等有机金属化合物形成手性引发剂体系，初步探讨了甲基丙烯酸甲酯单体的聚合反应。

However,for polymeric 4,4'-bipyridyl dihalide or dithiocyanate adducts 〓, itremains a challenge to obtain their single crystals suitable for X-ray analysis.

然而，对于4，4-连吡啶类聚合加和物〓，要得到适合X-射线测定的单晶有一定困难。

A2D iim ine nickel, palladium complexes and pyridine bisimine iron, cobalt complexes are discovered in recent years to be new generation late transition metal catalysts for olefin homogeneous poly merization and oligomerization.

A2二亚胺镍、钯络合物和吡啶二亚胺铁、钴络合物是近几年来发现的新一代烯烃均相聚合后过渡金属催化剂。

Characteristics: Climbing perennial woody vines, stem densely hairy; leaves compound, opposite, consisting of three leaflets or sections, biternate or pinnate, the leaflets 3－9, acuminate at apex, coarsely serrate at margin; inflorescences panicles or cymes, axillary; flowers white to yellowish

形态：多年生攀缘性木质藤本，茎被密毛；叶对生，2回3出叶或羽状复叶，小叶3－9，先端渐锐，叶缘粗锯齿；圆锥或聚繖花序腋生，花白色至淡黄绿色，似花瓣的花萼4片；瘦果聚合，各具毛绒长尾。

Methods The antibody of Borrelia burgdoferi in the crowd serum was detected by immunofluorescence, and the spirochete DNA was tested with PCR.

人群血清伯氏疏螺旋体抗体的检测采用免疫荧光法，以聚合酶链反应检测伯氏疏螺旋体DNA。

In this research, we extracted the genomic DNA from the Buxus sinica var. parvifolia leaves by using the modified CTAB approach and then used as the template DNA. Base on the invariable quantity of TaqDNA, we att empted to establish and optimize ITS-PCR amplification system for Buxus sinica var. parvifolia by employing L9 (3^4) orthogonal design with four factors, i.e. template DNA, Mg(superscript 2+), dNTPs and primer.

本研究利用改良CTAB法从珍珠黄杨叶片中提取基因组DNA作为模板，在TaqDNA聚合酶量不变的基础上，利用正交设计L9(3^4)对4个因素（模板DNA、Mg(上标2+)、dNTP和引物）在3个水平上对珍珠黄杨ITS-PCR反应体系进行优化。

Besides, the preparation of polymeric iron through bio—catalytical oxidation and its flocculating function have been investigated.

此外，本论文还就聚合铁的生物催化氧化制备及其絮凝作用进行一些探讨。

A process for preparing polyaluminum chloride from waste chlorhydric acid and poor quality kaolin has been developed.

开发出一种用废盐酸和劣质高岭土生产聚合氯化铝的方法。

The magnetic microbeads with 1μm diameter are synthesized by ultrafine γ-Fe2o3, cinnamene, diethylene benzene monocase combined suspendd polymerize and ultrasonic technology. The magnetic microbeads are composed of ultrafine magnetic powders, polymer and single-antibody.

采用超细r-Fe2O3粉对界面进行处理，利用苯乙烯、二乙烯基苯单体，采用悬浮聚合法和超声波技术，合成粒径为1μm左右的磁性微珠，该磁性微珠由超细磁粉、高分子材料和单抗功能基团组成。

The magnetic microbeads with 1um diameter were synthesized by ultrafined r-Fe2O3, cinnamene, diethylene benzene moncase combined suspend polymerize and ultrasonic technology. The magnetic are composed of ultrafine magnetic powders, polymer and single-antibody.

采用超细r-Fe2O3粉界表面进行处理，利用苯乙烯、二乙烯基苯单体，采用悬浮聚合法和超声波技术，可以合成粒径为1um左右的磁性微珠，该磁性微珠由超细磁粉、高分子材料和单抗功能基团组成。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。