重均分子量

与参考催化剂相比，该催化剂制备的聚乙烯树脂具有较高的堆积密度（0.39g/cm3）和较窄的相对分子质量分布，重均分子量低于1000的部分较少。

Compared with the PE resin produced with reference catalyst , the bimodal PE resin prepared with BCE possessed a high bulk density up to 0.39 g / cm3 as well as a narrow molecular weight distribution with fewer fractions having weight-average molecular weight below 1 000 .

胶原α2（Ⅰ）链被胰蛋白酶降解的最终产物的重均分子量计算

The Calculation of the Weight-Average Molecular Weight of α _2 (ⅰ) Chain Final Products Degraded by Trypsin

HPLC法测定羟乙基淀粉氯化钠200/0.5注射液的重均分子量

Weight average molecular weight of Hydroxyethyl Starch 200 / 0.5 and Sodium Chloride Injection by HPLC

PVC接枝共聚物的特性粘度随接枝率增加而增加，其重均分子量和分子量分布指数均大于接枝所用的PVC树脂。

The intrinsic viscosity , weight average molecular weight and index of molecular weight distribution of PVC-g-BA copolymer increased with increasing grafting degree .

PE的相对分子质量随聚合温度的下降有明显增大，在0-60℃时重均分子量为（16-60）×104。

The relative molecular mass of the PE resin remarkably went up as the polymerization temperature lowered , e.g. its weight average molecular weight attained ( 16-60 )× 104 in the temperature range from 0 to 60 ℃ .

通过我们系统的研究工作，采用Lewis酸催化剂，在室温、不同溶剂中聚合环戊二烯，得到了重均分子量为2000-15000的齐聚物。

In our study , the oligo ( cyclopentadiene ) with weight average molecular weight ( Mw ) between 2,000 ~ 15,000 was made using Lewis acid as catalyst at room temperature .

重均分子量为1726，硫含量为15.1%的新卡拉低聚糖对小鼠S180具有明显的抗肿瘤活性，处理剂量为100mg/kg时的抑瘤率达到78.2%。

A carrageenan oligosaccharide with a molecular weight of 1726 , sulfur content 15.1 % administered orally at a dose of 100 mg / kg mouse markedly inhibit tumor formation .

示差折光检测器。结果：利用GPC软件处理，得到莫海林的数均、重均分子量和分子量累积重量分布曲线。

Results : The Mn , Mw and molecular weight distribution curves ( cumulative weight fraction distribution curves ) were obtained by GPC software from the calibration curves which were made by standard dextrans .

用光散射法测定其重均分子量为1.42×10~5g/mol，比旋光度为+90°，总糖含量96.5%，显色反应表明ASP是还原性多糖，热分析测试为无定型粉末。

The molecule weight of ASP is 1.42 × 10 ~ 5g / mol , the specific rotatory power is + 90 °, and the total content of ASP is 96.5 % . The thermal analysis shows that ASP is a amorphism powder .

用激光光散射（LLS）、尺寸排除色谱和LLS联用（SEC-LLS）和粘度法测定了这些多糖的重均分子量（Mw）和特性粘数（[η]）。

Mw and intrinsic viscosities ( [ n ] ) of these polysaccharides were characterized by using laser light scattering ( LLS ), size exclusion chromatography combined with laser light scattering ( SEC-LLS ), and viscometry .

凝胶渗透色谱与琼脂糖凝胶电泳分析表明PST-a为单一组分，重均分子量为1.0×105Da。

GPC and agarose gel electrophoresis showed that PST-a was a uniform fraction and the relative molecular weight was 1.0 × 105 Da .

设计7800M的重均分子量为（3.0~4.5）×105，相对分子质量分布为双峰模式，分布值为40~60；

7800M possessed bimodal relative molecular mass distribution , Mw of ( 3.0-4.5 )× 105 and Mw / Mn of 40-60.1-butylene was taken as comonomer that was distributed in the fractions with high relative molecular mass .

本文以褐藻胶和κ-卡拉胶为原料通过酸水解分别获得了低聚的甘露糖醛酸、古罗糖醛酸和低聚κ-卡拉胶，并采用HPGPC法测定了这3种低聚糖的重均分子量。

Low molecular weight mannuronic acid , guluronic acid and κ carrageenan were prepared from algin and carrageenan by the acid hydrolysis method , and their weight average molecular weights and the distribution widths of molecular weight were determined by high performance gel permeation chromatography ( HPGPC ) respectively .

样品经酸水解，测得右旋糖酐铁中右旋糖酐的重均分子量和分子量分布。

The average molecular weight and molecular weight distribution were determined with acid hydrolyzed iron dextran samples .

对二异氰酸和三元醇反应体系的研究表明，体系的粘度由温度、反应程度或重均分子量等决定；

The results show that the viscosity is predominated by temperature , reaction extent or weight average molecular weight .

结果表明，随单体转化率提高，体系粘度增加，生胶的数均、重均分子量均增大，相对分子质量分布宽度指数变大，即分子量分布变宽。

It indicates that the latex viscosity , the number averge molecular weight and weight average molecular weight of rubber increased with increasing the monomer conversion , the relative molecular mass distribution width index is larger .

对苯乙烯热引发工业预聚动态过程进行了模拟，反应器出口固含量以及聚合物重均分子量的模拟结果与工业装置采集数据的误差在5%以内。

A dynamic model was developed for an industrial styrene pre-polymerization process . Calculated weight fraction and weight average molecular weight ( Mw ) of polystyrene in the outlet stream are all in good agreement with industrial data .

结果表明：乙醇胺循环法分离木素重均分子量最高达6234.14，多分散系数在2～2.7之间，分子量范围分布较窄，且受循环次数的影响不显著。

The results show that the maximum molecular weight of lignin obtained by ethanolamine circulation can reach 6234.14 , the nonuniformity index is between 2 ~ 2.7 , with the molecular weight distributed in a narrow range , and the results influenced by circulation times was not apparent .