molecular modification 中文意思是什麼

Abstract : molecular deposition ( md ) film, a nano film, is assembled by the interaction of static charge between cationic and anionic compounds. the micro - friction properties of an md film on silica has been studied with atomic force microscope ( afm ). it has been found that the md film has lower coefficient of friction as compared with the original surface of silica. moreover, based on the analyses of the surface force versus distance curves, photographic image, friction force image, and modulated force image, it is concluded that the friction reduction effect of md film on silica is attributed to the surface adhesion reduction and surface micro - modification

文摘:利用原子力顯微鏡對石英巖表面單層分子沉積膜的微觀摩擦特性進行了研究，發現該分子沉積膜具有一定的減摩性.通過對其表面力-位移曲線、表面形貌像、調制力像和摩擦力像的進一步分析表明，石英巖表面分子沉積膜具有減摩作用的原因在於它能夠降低表面的粘著力並對表面具有微觀修飾作用

Flowing modification of ultrahigh molecular weight polyethylene

超高分子量聚乙烯流動改性進展

Ultrahigh molecular weight polyethylene modeling process and modification

超高分子量聚乙烯的成型工藝及改性研究進展

Surface modification of ultrahigh molecular weight polyethylene uhmwpe fiber by chemical etching method

電暈法處理超高相對分子質量聚乙烯纖維

Abstract : the synthesis, molecular structure and modification of amino modified polysiloxane, a softening agent for textile, are summarized, and softening agent of different structure are also describe briefly

文摘:綜述了以氨基改性聚硅氧烷為主的織物用柔軟劑的合成、分子結構及進一步的改性。

Study on modification of performance and application of ultra high molecular weight polyethylene material in mechanical field

超高分子量聚乙稀材料改性及在機械上的應用

The authour investigate the dosing conditions and effect of the pac to the huanghe water - source, which includes the following four parts : the selection of the pac ; the confirmation of dosing scheme and effect of the pac ; the research of application of potassium permanganate in combination with pac ; the research of the pac ' s modification and the modified effectiveness. the experiment is mainly carried out on the pilot system in the jieyuan water plan of tianjin. the results of the reseach include the following : l ) the pac from zunhua plant is selected as the better carbon for the source water of tianjin through the experiment ; 2 ) through the pilot experiment we conclude that the pac ' s best adding point is the mixing tank and the better dose is 10mg / l, on which the codmn of filtered water can be decreased to 40 % and the effluent have no problem of odour and color ; 3the adsorbing experiment show that pac mainly adsorb the organic matters which molecular wt., distribution between 500 and 3000, and can adsorb organic matters whose molecular wt., distribution are bigger than 6000 if the dose of it is adequent ; 4 ) pac together with potassium permanganate can remove the organic matter more effectively than each of them alone, and reduce the rising trend of turbidity of the flotation ' s effluent due to adding pac ; 5 ) the thesis made a research on the surface properties and the adsorbing capability of the modified carbon by oxidizer : the modified carbon with 20 % h2o2 can remove more organic pollutants than the untreated one by 12 % when we add a higher dose of coagulant ; 6 ) the modification of reduction and loading metal ions are also sttldied, and drow the following conclusions : the modified carbon with 5 % ammonia can enhance the organic matter ' s removal effectiveness by 10 % to the tianjin source water than the untreated one, and the modified one with loading metal ion remove the organic matters from the tianjin source water better ( 8 % ) than the untreated one due to the strong affinity betwween the humic acid and copper ion

本文的實驗主要是在天津芥園水廠的中試系統上完成的，論文的成果和結論主要包括： 1 ）通過靜態實驗選定河北遵化活性炭廠生產的煤質炭為適合天津原水的炭種； 2 ）中試實驗確定粉末活性炭的較佳投加點為混合池投加，較佳投加量為10mg l ，此時可使濾后水的cod _ （ mn ）降低40 ，且可較好地控制濾后水的嗅味和色度； 3 ）初步確定粉末活性炭對原水中有機物的吸附主要集中在分子量在500 - 3000范圍內，投量增大時可吸附部分分子量大於6000的有機物4 ）中試實驗表明：粉末活性炭與高錳酸鉀聯用可取得較兩者單獨應用時對有機物更好的去除效果，且對因投加粉末活性炭而造成的氣浮出水濁度升高有一定的改善作用； 5 ）研究並初步確定氧化改性對粉末活性炭表面性質和有機物的去除效果的影響：粉末活性炭的氧化改性會使其表面的酸性官能團大量增強，表面極性增加；經20的過氧化氫改性的活性炭在增大混凝劑投加量（ fecl _ 3投量為15mg l ）時對有機物的總體去除效果較原活性炭提高12 ， 1次氯酸鈉改性活性炭對有機物的去除效果較原活性炭提高6 ； 6 ）研究並初步確定還原改性、負載金屬離子對原水中有機物的去除效果的影響：經5氨水改性的活性炭可提高天津源水中有機物的去除率達到10 ；負載銅離子后的活性炭可提高對腐殖酸類物質的去除能力，一般可提高8左右。

This work is the analysis of metabolic pathway and designing rational genetic modification to optimize cellular properties by using principle of molecular biology

本研究根據代謝工程原理系統分析了細胞代謝網路，並利用dna重組技術合理設計細胞代謝途徑及其遺傳修飾，進而完成細胞特性改造。

High - molecular composite material after property modification ( adjust the molecular structure of resin and the composition of the material ) still possesses good fireproof performance and the resistance w high temperature as well as galvanic corrosion, becoming a high performance thermosetting composite material

摘要通過對高分子復合材料進行改性（調整樹脂的分子結構及材料組成） ，使材料具有良好的防火性能、耐高溫性能及抗電化腐蝕性能，成為高性能的熱固性復合材料。

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

金屬卟啉正是這樣一類分子結構特殊的金屬有機配合物，因其易於制備和表現出的優異的光學特性而受到眾多研究者的青睞。在本文，我們使用ar ~ +激光器，研究了表面修飾的半導體納米微粒和金屬卟啉的非線性光學特性。

The molecular characteristics of peg and its grafting techniques such as chemical, uv photo - induced, plasma and ozone oxidation methods in membrane surface modification are introduced

介紹了聚乙二醇分子結構特徵，重點敘述了包括化學法、紫外光照法、等離子體法以及臭氧化法等聚乙二醇在膜表面改性中的接枝方法。

Biotechnology - modified organisms for application in the environment - guidance for the characterization of the genetically modified organism by analysis of the molecular stability of the genomic modification

生物技術.應用於環境的改良有機體.通過分析基因改良分子穩定性指導改良遺傳有機體特性

En 12683 biotechnology. modified organisms for application in the environment. guidance for the characterization of the genetically modified organism by analysis of the molecular stability of the genomic modification

生物工程.環境用改良有機體.通過分析基因改良分子穩定性確定基因改良有機體特性的指南

To enhance technical performance level of drilling treating fluid additives, the following measures are suggested by the author i. e. development of specialty materials for drilling fluids additives, further development of novel synthetic resins, deep modification of natural polymeric materials, improving the molecular design of new types of polymers, and etc

建議從研製專用原料、開發新型合成樹脂、天然高分子材料深度改性和完善聚合物的分子設計等方面提高鉆井液處理劑水平。

Modification and characterization of mcm - 41 mesoporous molecular sieve

41介孔分子篩的修飾與表徵

The regulation of acid catalytic property of molecular sieve can be realized via surface modification of mesoporous molecular sieve by means of introducing doping metals into skeleton or loading active species onto matrix during synthesizing precursor for mesoporous molecular sieve

在合成介孔分子篩的前驅物中摻雜其他金屬元素而將其引入骨架或將活性組分負載到介孔分子篩的基體上，可以實現對介孔分子篩表面進行表面修飾與改性，以調變分子篩表面的酸催化性能。