chemical modification造句

• Microporous materials have caught more and more attention because of its large specific surface area , high adsorption capability and chemical modification of the surface
  摘要微孔材料因其具有大比表面积、对低浓度痕量物质的高效吸附及表面化学可修饰性而越来越受到烟草科技工作者的青睐。
• As a test to determine whether such histone modification functionally affected plasticity , the researchers administered a drug to adult mice that would increase chemical modification of histone
  为了确定组蛋白的化学修饰是否对大脑可塑性产生功能上的影响，研究人员做了一个试验，即给予成年鼠服用一种能够增加组蛋白化学修饰的药物。
• The search for new optical materials with strong nonlinear behavior has motivated experiments with surface chemical modification , because optical properties are closely associated with the large ratio of surface atoms / bulk atoms
  这些表面被修饰的半导体纳米微粒表现出一些奇异的光学现象和性质，比如可调的光学带宽和载流子的空间分离。
• In this paper , we adopt a simple chemical modification method for the surface functionalization and grafting of polar monomers onto pvdf membranes , which provides excellent hydrophilicity to the polymeric surfaces
  本文采用化学接枝改性的方法对pvdf中空纤维膜进行亲水改性，研究了预处理条件对接枝反应的影响，以及改性后膜性能的变化。
• Studies of inactivation of a - transglucosidase by chemical modification demonstrated that cys , asp ( glu ) and his residues were indispensable groups of the a - transglucosidase . partial disulfide bonds were the function of this enzyme
  因止，认为cys 、 asp （以）和川s残基为q葡萄糖转苦酶的必需基团，部分二硫键对保护酶的催化功能是必需的。
• Since chemical modification has been applied in all of fields as a functionized method , considerable effort has been devoted to functionized mcm - 41 by chemical modification so as to produce new functionized materials
  化学修饰作为一种功能化手段已被广泛应用于各个领域，利用化学修饰对mcm - 41进行功能化，改善介孔分子筛的性能，已受到越来越多研究人员的关注。
• Several preparation methods , including grafting polymerization , chemical modification of natural fibers and polymer blending method , are reviewed and the future research and development work on iefs is also proposed
  摘要综述了离子交换纤维常见的几种制备方法，包括接枝共聚改性法、原始纤维进行化学改性法、聚合物混合成纤法等，并对未来的研究发展方向进行了展望。
• In this thesis , the synthesis of the mesoporous silica molecular sieves mcm - 41 was introduced , and the work of manganese chemical modification was done , at the same time , the study of manganese oxide mesophase was attempted
  本文采用水热合成的方法合成mcm - 41 ，并对合成材料进行锰化学修饰；同时尝试对锰氧有序孔相合成的初步研究，为改善有序介孔材料性能及研究介孔材料器件提供科学依据。
• Together the results show that chemical modification of the lectin can affect heamagglutination and mitogenic activity separately . this indicates that the polygonatum cyrtonema hua . lectin ii has at least two active centres which play different roles in determining its activity
  研究黄精凝集素n抗艾滋病毒fa琴1和hi从2对cem ( t细胞淋巴瘤细胞系)和th . 4 (小鼠神经细胞系)的感染中的作用发现。
• Woodiness materials is prepared to thermoplastic through chemical modification , which can easy machining and has biodegradability ; is also composite with resin or plastic to wood - plastic ( wpc ) ; or dipping it into resin then sinter it to woodceramic
  摘要木材经过化学改性可制备成易于加工且可生物降解的热塑性木材；也可与树脂或塑料进行复合得到木材塑料（木塑复合材料） ；或者将其浸渍入树脂再进行炭化得到木材陶瓷。
• Unfortunately , one of the main reasons to break things down is because they have been chemically modified so that they no longer work , and sometimes these chemical modifications create structures that are so weird that none of the cell ' s degradation machinery works on them
  不幸地，把东西降解的主要理由之一，是这些东西已被化学修饰得不能再用，有时，这些化学修饰物创造了那么怪异的结构，以至于没有一部细胞降解机器能够对付它们。
• According to the means and the functions of modification , the main methods of surface modification including mechanochemical modification , oxidation modification , surface chemical modification , encapsulation modification , coating modification and deposition modification were described
  本文中综合铝粉改性的手段及改性后铝粉的功能，介绍了铝粉表面改性常用的几种方法，包括机械化学改性、氧化改性、表面化学改性、胶囊改性、包覆改性和沉淀改性等。
• For this purpose , 2 , 5 - diaminobenzene sulphonic acid ( dabsa ) [ c6h3 ( nh2 ) 2so3h ] can be selected as one monomer of ip reaction . the other monomer can be trimesoyl chloride ( tmc ) [ c6h3 ( coc1 ) 3 ] . in order to introduce the cationic group into membrane , 4 - ( chloromethyl ) benzoyl chloride ( cmbc ) [ ch2c1c6h4 ( coc1 ) ] could be added into organic phase ( tmc ) and used for chemical modification after ip process based on the reaction between 4 - ( chloromethyl ) benzoyl chloride and trimethylamine ( tma )
  为了引入阳离子交换基团，本文采用2 , 5 -二胺基苯磺酸作为界面聚合的无机相单体；为了引入阴离子交换基团，在均苯三甲酰氯有机相单体中加入一定量的4 -氯甲基苯酰氯，并考虑在无机相中加入适量的聚乙烯亚胺( pei )以增加其正荷电性。
• Antimony doped tin oxide ( ato ) and indium tin oxide ( ito ) thin films have been prepared by a sol - gel process using inorganic metal salts as precursors . the effects of heat - treatment atmosphere , temperature , time and dopant content on the electrical and optical properties of thin films were investigated . the fine patternings of the ato films were fabricated by chemical modification and sol - gel method
  本文以无机盐为出发原料，采用溶胶?凝胶法制备了光学和电学性能较为优良的掺锑二氧化锡( ato )薄膜和掺锡氧化铟( ito )薄膜，进一步研究了热处理气氛、温度、时间、掺杂量对薄膜电学及光学性能的影响。
• 1 . biological activities of analog peptides of bombyx mori prothoracicostatic peptide and the relationship with their structures based on the amino acid sequence of bom - ptsp , awqdlnsaw , a group of analog peptides of bom - ptsp was synthesized by chemical modifications , such as adding , removing , replacing amino acid of the peptide
  抑前胸腺肽类似多肽的生理活性及其与结构的关系研究：以家蚕bombyxmori抑前胸腺肽( bom - ptsp )的氨基酸序列( awqdlnsaw )作为基础，通过氨基酸残基的添加、减少和置换，人工合成了一组与家蚕抑前胸腺肽结构类似的多肽。
• There are effective ways to improve the value of fly ash including : changing the character of the fly ash through physical - chemical modification , researching the efficient compound coagulant ; combining fly ash and other substances to process printing and dyeing wastewater ; resolving the problems in the disposition of saturated fly ash
  对粉煤灰进行物理化学改性，研究高效复合粉煤灰混凝剂，将粉煤灰与其他物质组合处理印染废水，并解决饱和灰的最终处置问题，是提高粉煤灰利用价值的有效途径。
• Pcl ii had two mutations in nueleotide sequences and amino acid sequence compared with that of natural pcl ii . the effect of chemical modification of amino acid residues upon haemagglutination and mitogenic activity toward t - lymphocytes was investigated . modification of tyrosine ( 1 - acetylimidazole and 4 - nitrobenzenesulphonyl fluoride ) did not alter haemagglutination but decreased mitogenic activity by about one half
  采用不同的方法对酪氨酸( tyr )进行了修饰:用勺r酚经基专一性试剂对硝基苯磺酞氟( nbsf )修饰pcln ，导致pcln促淋巴细胞有丝分裂活性大幅下降，表明巧r的酚经基对于此活性是必需的。
• In addition , metalloporphyrin , which is a class of metal organic ligand , attracted more and more attention in the past few years due to its special molecular structure and photoelectrical properties . these scientific research arise my interests in preparing metalloporphyrin ( such as co - porphyrin , fe - porphyrin ) and semiconductor nanoparticles by means of surface chemical modification , and investigating some of their nonlinear optical properties using various optical measurement tools
  金属卟啉正是这样一类分子结构特殊的金属有机配合物，因其易于制备和表现出的优异的光学特性而受到众多研究者的青睐。在本文，我们使用ar ~ +激光器，研究了表面修饰的半导体纳米微粒和金属卟啉的非线性光学特性。
• Techniques of culture of prothoracic gland ( pg ) in vitro , 3h - ecdysteroid - radiounniunoassay , and methods of molecular biology and biophysics , for instance , nuclear magnetic resonance ( nmr ) , circular dichroism cd ) and so on were engaged . the biological activity on ecdysteroidogenesis in vitro and in vivo of a group of analog peptides of bom - ptsp synthesized by chemical modifications and the relationship between the structures and functions were studied
  本研究利用~ 3h -蜕皮激素放射免疫分析方法、分子生物学、生物物理学的方法和手段、体外培养和体内导入等技术对bom - ptsp及其一组人工合成的与ptsp结构类似的多肽进行了结构和功能关系的研究，鉴定了它们的生理活性及其与结构的关系，以及它们在家蚕体内的活性及其与结构的关系，还对ptsp及其类似多肽进行了核磁共振和圆二色的研究。