molecule weight 中文意思是什麼

The molecular weight of a molecule is the sum of the atomic weights of the constituent atoms.

一種分子的分子量就是構成它的原子成分之原子量總和。

In the part, the author ' s intention is mensurating the molecular weight of the polypeptides by sodium dodecyl sulfate polyacrylamide gel electro - phoresis. the result shows that one of the polypeptides which we have mensurated is about 17, 000da. the conclusion is that the components which we have separated and purified are small molecule polypeptides. 5

紅褐林蟻多肽蛋白質的分子量測定本部分旨在通過sds -聚丙烯酰胺凝膠電泳測出所得多肽蛋白質的相對分子量，測得其中一組分的相對分子量為17000da左右，結論為所分離、純化的物質是小分子的多肽。

There were existed three effects for a compatibilizer : intercalation, miscibility and encapsulation, the effect of which was dependent on the compatibilizer loading, molecule weight / or melt index and molecule structure

相容劑在該體系中具有增容、插層和包覆三種作用，其效果取決于相容劑添加量、分子量（粘度）及其分子結構。

The recombinants were constructed by transforming ppic9 a - xynb into p. pastoris gs115. the assay results revealed that the xylanase gene xynb was overexpressed and secreted effectually in p. pastoris. in 3l fermentor the expression level of xylanase xynba exceeded 1200iu / ml and the expressed xylanase had normal bioactivity. the molecule weight of xynba was determined as about 31kd which is higher than 23kd of original enzyme xynb from streptomyces olivaceoviridis a1. xynbb was gotten by deglycasylation of xynba, whose molecule weight returned to 23kd. we comparised the enzymatic properties of xynba expressed in p. pastoris, xynbb deglycasylated from xynba and xynb produced from streptomyces olivaceoviridis al : there was little difference among the three enzymes on optimal ph, the optimal ph of xynb and xynba were both 5. 2, the optimal ph of xynbb was 5. 0 ; the optimal temperature of xynb and xynba were both 60 c, while the optimal temperature of xynbb was 50 ? ; because of glycosylation the thermal stability of xynba was better than xynb and xynbb ; the specific activity of xynba and xynbb were 883. 88iu / mg and 832. 5hu / mg respectively, which were both lower than 2814. 45iu / mg of xynb ; the km values of xynb and xynba were similar to each other which were 21. 56 ( g / kg ) and 20. 87 ( g / kg ), while the km value of xynbb was 27. 10 ( g / kg ) ; the fmax of xynba and xynbb were 4568umol / mg. min and 5329umol / mg. min respectively which were lower than 27623 umol / mg. min of xynb ; additionally all of the three enzymes did not display cellulase activity. they all had well resistance to pepsion and trypsin, and were not sensitive to metal iron, surface active agent and chelating agent. the analysis of different xylans enzymatic hydrolysate revealed : by xynba, that the main constitutions of enzymatic hydrolysate of birch wood xylans were xylotriose and xyloquaiose, which account for 68. 43 % and 16. 50 % respectively, additionally there was 11. 79 % of xylobiose ; the main constitutions of enzymatic hydrolysate of corncobs xylans were xylobiose and xylotriose, which account for 81. 78 % and 11. 55 %. the result indicated that this xylanase was a kind of 1, 4 - b - d - xylanohydrolase and was fit to used in industrial procession of xylooligosacc harides

進一步對xynba進行了脫糖基化處理得到xynbb ，其分子量恢復到23kd ，證明xynba是糖基化蛋白。通過對畢赤酵母重組表達的木聚糖酶xynba 、脫糖基化的木聚糖酶xynbb以及橄欖綠鏈黴菌a1所產原酶xynb之間酶學性質的比較發現：三種酶的最適ph差異不大， xynb和xynba均為5 . 2 ， xynbb為5 . 0 ； xynb和xynba的最適溫度均為60 ， xynbb降為50 ：在耐熱性上， xynba由於糖基化作用熱穩定性明顯高於未糖基化的xynb和xynbb ； xynba和xynbb的比活性分別為883 . 88iu mg和832 . 51iu mg ，明顯低於原酶的比活2814 . 45iu mg ； xynb和xynba的km值相當，分別為21 . 56 （ g kg ）和20 . 87 （ g kg ） ，而xynbb的km值較大為27 . 10 （ g kg ） ； xynba和xynbb的vmax相差不大，分別為4568 mol mg ? min和5329 mol mg ? min ，明顯低於xynb的27623 mol mg ? min此外三種酶均無纖維素酶活性，對胃蛋白酶和胰蛋白酶有很好的抗性，且對作用環境中的各種離子、表面活性劑、螯合劑不敏感。通過對不同木聚糖的酶解產物的糖份分析發現：以樺木木聚糖為底物時，酶解產物主要為木三糖和木四糖，含量分別為68 . 43和16 . 50 ，另外還含有11 . 79的木二糖；以玉米芯木聚糖為底物時，酶解產物主要為木二糖和木三糖，含量分別為81 . 78和11 . 55 。

Purification and characterization of phytase from a. niger an 01001 a. niger an01001 was inoculated on solid media and cultivated at 30 for 5 days. proteins were extracted from solid - state fermentation with 50mm acetate buffer ( ph5. 5 ). the molecule weight of the phytase protein was determined as about 78kd by sds - page. the purification procedures include ammonium sulfate precipitation, deae - cellulose ion - exchange chromatography, gel electrophoresis and electroelution

3 .植酸酶的分離純化及其性質研究黑麴黴ano1001經固體發酵，用緩沖液抽提后，經硫酸按沉澱， deae一纖維素離子交換層析，聚丙烯酞胺凝膠電泳和電洗脫等純化步驟獲得的植酸酶，用sds一page檢測為一條均一譜帶，其分子量約為78kd 。

The full orp encodes a 487 - amino acid protein with a calculated molecule weight of 53. 484 kda and an isoelectric point of 6. 75. at the primary sequence level, it shared high homology with clr, so was named clr - like serine protease, clsp. the clsp sequence has been submitted to genbank / embl ( genbank accession number af178985 )

該蛋白在核酸和氨基酸水平上與人補體組分cl :表現高度同源，故將其命名為補體cl :樣絲氨酸蛋白酶（旦lr一like旦erineprotease ， clsp ） ，該基因已經在ge心ank登錄（登錄號為af17s985 ） 。

The beheviour of four low - molecule weight organic acid lactic acid, hydroxy - acetic acid, mercapto - acetic acid, glyconic acid as iron - containing silicate - aegirines depressants on the hematite direct flotation is investigated in this paper. the results of flotation tests with pure minerals, artificial mixture of minerals and naturally occurring ore show this depressants have good selectivity in flotation. the flotation separation of hematite from aegirine is achieved successfully with the four depressants

本文研究了四種小分子有機酸抑制劑乳酸、羥基乙酸、巰基乙酸、葡糖酸在赤鐵礦正浮選中對含鐵硅酸鹽脈石霓石的抑制行為，純礦物、人工混合礦與實際礦石浮選實驗均證明了它們具有良好的選擇性抑制作用，可以成功地實現赤鐵礦與霓石的浮選分離。

Low molecule weight material removal from vinyl silicone rubber

乙烯基硅橡膠生膠中低分子的脫除

Based on polymerization reaction of the nylon - 6 rubberized cord fabric production of distributed control system in yangzhou organic chemical plant computer integrated manufacturing system ( yh - cims / dcs ), the multiple stepwise regression method was used to build the statistic mathematical models of the molecule weight and the monomer quantum of casting slice belt. then the optimization model of polymerization reaction was presented, which was solved by using simulation annealing algorithm to obtain the best techniques parameters. the improved hybrid genetic algorithm and back propagation algorithm are combined to train neural network, brought out the neural network prediction model of casting slice belt ' s average molecule weight to guide the technologist on - line

提出了流程工業生產過程操作優化策略和應用實施方法，包括生產過程離線優化策略、非線性問題求解策略、在線優化模型及學習策略；結合揚州有機化工廠計算機集成製造系統集散控制系統（ yh - cims dcs ）的實施，針對錦綸? 6浸膠南京理工大學博士學位論文摘要簾于布生產中己內酚胺聚合反應過程優化控制這一工程實際問題，採用統計建模方法，建立了聚合反應過程的優化模型；為求解所得的優化模型，提出了種改進的有約束條件下的模擬退火演算法，該演算法能避免陷於局部最優解，有效地提高了所求解的全局性和可靠性：提出了基於改進的ga演算法和sp演算法相結合的混合學習演算法，建立了基於神經網路的聚合反應過程生產目標在線預測模型，該演算法和模型滿足了生產中的實時性和實用性要求。

The effects of the mole ratio of anhydride to amino group of chitosan in the feed solution on the solubility, intrinsic viscosity and molecule weight of the product were studied

研究了投料物質的量比對產物的溶解性、特性黏度和相對分子質量的影響。

The result indicates that displacement characteristics of unsheared polymer solution is better than the same viscosity polymer solution after sheared, the injection pressure of the unsheared polymer solution is higher than the same viscosity polymer solution after being sheared in the same permeability core, the lower the permeability, the bigger the molecule weight and the bigger the difference, as to the every layer of the secondary oil layer, it is feasible to displace oil with the polymer solution after sheared, and the eor of the polymer flooding can increase more than 9. 84 %

結果表明：未經剪切的聚合物溶液的驅油效果好於經剪切之後的相同相對分子質量的聚合物溶液的驅油效果；對于相同滲透率的巖心，未經剪切的聚合物溶液比經過剪切相同相對分子質量聚合物溶液的注入壓力高，而且滲透率越低，相對分子質量越大，差異越大；對於二類油層的各滲透率小層，進行經剪切后聚合物溶液驅油是可行的，聚驅采出程度提高幅度均超過9 . 84 % 。

The control algorithms of reaction temperature, reaction pressure, molecule weight and reaction gas composition are discussed. the application of neural network and fuzzy control is stressed

主要討論了反應溫度、反應壓力、氣體組分、聚合物分子量主要控制參數的控制策略，探索了神經網路、模糊控制等智能控制方法在烯烴合金共聚反應的應用。

The ns5 protein of dengue virus is the largest molecule encoded by the virus genome with a molecule weight of 104 000. recent research work indicates that the ns5 protein acts as the rna - dependent rna polymerase ( rdrp ) in virus which has the ability to recognize and bind its template rna to synthesize a complementary strand

近年來的研究表明， ns5蛋白具有rna依賴的rna聚合酶（ rdrp ）功能，即可以識別具有相對特異性的模板rna並與之結合，合成與模板互補的rna鏈，在病毒基因組復制過程中起關鍵作用。

The effects of the monolayer - formation conditions on the monolayer behavior, including the phase structure ( molecular packing ), intermolecular interactions, stability, and so on, were discussed. based on the theory model we study low molecule weight surfactant ( behenic acid ) and phospholipid monolayer and the cyclic isotherms of their mono layers ; including the standard thermodynamic characteristics and aggregation of the cyclic isotherms

從力學性質著手，我們討論了成膜條件對相態結構（分子排列） 、分子間作用力、穩定性等物理化學性質的影響；在此基礎上，利用現有的理論模型討論小分子化合物（二十二酸）及其磷脂分子壓縮、擴張過程分子聚集、擴散機理及其熱力學問題。

The fragment codes the enzyme of 459 amide acids, the molecule weight of which was 49903. 92dal

此片段編碼由459個氨基酸組成的酶，計算分子量為49903 . 92dal 。

The effect study on the application of low molecule weight heparin by different approaches

低分子肝素不同途徑應用的效果研究

But some times we still got samples that are nearly the same in lc and ms ; we should use hydride or tandem ms, the most expensive ms instrument that unveil both molecule weight and some structure information

串聯質譜不僅提供了分量的信息，還可以提供很多分子結構的信息，幫助我們了解樣品組成。

The molecule weight of the 6 - pgadase is 110000da, which is measured by akta fplc and the molecule weight of subunit is 51000da, which is measured by sds - page. therefore one 6 - pgadase has two same subunits

用sephacryls - 300柱（ aktafplc系統）測得全酶相對分子質量為110000da ，用sds -聚丙烯酰胺凝膠測得電泳亞基相對分子質量為51000da 。

The effective antimicrobial components were confirmed to be some non - peptide ingredients, whose molecule weight ranged from 500 ~ 3000da, by protein deposition, polysaccharide separation, ultrafiltration, nanofiltration, and ion - exchange successively

採用沉澱蛋白、分離多糖、超濾、納濾、離子交換等方法分離水提液組分，證明芫荽中主要抑菌成分是相對分子質量在500 ~ 3000的水溶性非肽類物質。

In this article, based on introducing the concept of nanoplastic, it mainly expressed the intercalation compounding techniques and properties of some typical nanoplastics ( such as nylon 6 / clay nanocomposites, pet / clay nanocomposites, ultra high molecule weight polyethylene / clay nanocomposites )

摘要本文在簡介納米塑料概念的基礎上，重點介紹了插層復合法制備納米塑料及典型納米塑料的性能。