该报告是FDA发布的第二份报告,Pew健康基团分析了其中的数字,2009年的2880万磅(译注:1磅约0.45公斤)增加至2010年的3060万磅,增幅6.7%。
The Pew Health Group analyzed the numbers in the report, the second-ever issued by FDA, which showed a boost of 6.7 percent, from 28.8 million pounds in 2009 to 30.6 million pounds in 2010.
这些表面活性剂具有较高的表面活性和相同的亲水基,1 ,3二氧杂环戊烷基团也有一定的亲水性。
The results showed that these surfactants have high surface activity and same hydrophilic group, and the 1,3dioxolane ring are also hydrophilic.
结果表明二聚体的形成取决于取代基团的性质以及溶剂的介电常数与溶液浓度。
The results show that the formation of dimers depends on the nature of substituent group, dielectric constant of solvent, and concentration.
研究了憎水基团的添加量对溶胶体系的稳定性和对二氧化硅膜润湿性以及水汽稳定性的影响。
The influences of hydrophobic group content on the stability of the silica sols and the surface wettability and vapour stability of the silica membranes were investigated.
另外,XPS能谱表明,两种缩聚物中的二茂铁基团相当稳定。
XPS of two condensates indicates that the ferrocene group is rather stable in the condensates.
本文探讨了有关二聚体的形成与溶剂极性、溶液浓度、取代基团性质及络合金属原子的关系。
In this paper, the correlations of the formation of dimers with solvent polarity, concentration, nature of substituent group and central metal were investigated.
遗传物质DNA和RNA是磷酸二酯,磷酸酯基团是连接核酸的桥连基团。
DNA and RNA as the heredity matters, they belong to phosphoric di-ester that is their bridge linkage group.
试验结果表明,腐殖酸钠的多基团大分子附着在硅酸二钙分子的表面上,使其不与溶液接触而避免二次反应的发生;
The results showed that the big molecules of humic acid sodium enwrapped dicalcium silicate surface , which prevented dicalcium silicate from contacting with the solution.
利用SBS中丁二烯软段中的双键进行环氧化反应,引入环氧基团进行化学改性。
The double bonds of the butadiene soft matrix in SBS were epoxidized in order to incorprate the epoxy groups and modify chemically.
二唑基团的引入,改善了PPV衍生物的电子传输特性。
The electron transport ability of OPPV was improved due to introducing oxadiazole groups.
采用化学改性法,选择多官能团酚醛环氧树脂(F—51)与二乙醇胺进行定量加成反应,合成了一种在分子结构上既具有环氧基团,又具有亲水性基团的改性树脂。
According to the molecule design, a kind of modified resin which have both epoxy groups and hydrophilic groups was synthesized from polyfunctional group novolac epoxy resin (F-51) and diethanolamine.
研究了乙基硅油与癸二酸酯调和油的IR基团振动频率的变化,发现乙基硅油与癸二酸酯间存在着相互作用。
Changes of IR group vibrational frequency in the blends of diethyl silicone and sebacate were studied in this paper.
一种含1,2,3 -噻二唑活性基团的双酰肼衍生物及其制备方法和用途。
Diacylhydrazine derivatives containing 1, 2, 3-thiadiazole active group and preparation method and application thereof.
电辅基共分为两大类,第一类电辅基是由第四主族的元素参与组成的有机基因,而有机硫基团属于第二类电辅基。
The electroauxiliaries have two types. One is the organic group which contains silicon, tin, germanium and other element of IVA group, the other contains organothio group.
本论文立足于合成一种新型的含有双键的高性能环氧树脂——二烯丙基双酚A型环氧树脂(DADGEBA),并对该环氧树脂的基本性能及双键与环氧基团双固化的特性进行了研究。
This thesis bases on synthesizing a novel high performance epoxy resin (DADGEBA) containing double bonding and deeply study on the basic performance and double-curing behavior of epoxy DADGEBA.
表面润湿性降低,主要是表面张力中极性力的贡献,FTIR分析表明,这是由于二氧化硅颗粒表面-CH3非极性基团增加所致;
It is mainly because the polar force in surface tension decreases which results from the increase of CH3 nonpolar group on the surface of silica particles shown from FTIR analysis.
蒙脱土的存在还使缩聚过程中二甘醇(deg)基团及端羧基基团浓度上升。
It was also found that the contents of diethylene glycol (DEG) groups and the end-acid groups are increased during the polycondensation, due to the presence of nanoclay.
为了制备具有pH敏感性能的壳聚糖,本文采用将磺胺二甲氧基嘧啶(SDM)作为pH敏感基团接枝到壳聚糖上。
To make chitosan having PH sensitivity, in this paper chitosan was grafted by sulfadimethoxypyrimidine (SDM) which is a pH sensitivity group.
本发明的合成方法包括使用具有多个反应性含氮基团的聚合模板试剂,特别是二胺试剂。
The synthesis process of the present invention includes using polymerizing template reagent with several reactive nitrogen-containing radicals, especially diamine reagent.
合成了两个系列以1,3,4-噻二唑为中心基团的弯曲型分子,结合偏光显微熔点仪(POM)观察和差示量热扫描法(DSC)研究了它们的液晶性能。
Two series of bent-core liquid crystals with 1,3,4- thiadiazole as the center unit were synthesized, their liquid crystalline properties were studied by POM and DSC.
当发光基团松弛,C15次甲基桥的两个二面角的扭曲是相反的。
As the chromophore relaxes, the twist of the C15 methine bridge about its two dihedral angles is reversed.
因此,可以从硼酸盐晶体的阴离子基团电负性出发估算其最大二次非线性光学系数,这就为寻找新型的二次非线性光学硼酸盐晶体提供了理论依据。
So, we can estimate the maximal second NLO coefficients of borate crystals from their EN of anion groups, which can be used to search new second NLO borate crystals.
指出,共振核—CF 2—的化学位移不仅受第一、二邻位基团的影响,也受第三邻位的影响。
These results indicated that the chemical shifts of central -cf2 - group are not only affected by the first and the second neighboring groups, but also by the third neighboring group.
含有吸电子基团的二硝基苯类化合物反应活性明显高于含有供电子基的二硝基化合物的加氢反应;
The dinitrobenzene with electron-withdrawing group can be hydrogenated much easier than the dinitrobenzene with electron-donating group.
本文还用电子能谱揭示了表皮角蛋白与上述褪色剂之间的主要反应是胱氨酸的二硫键被氧化成磺酸基团。
The reactions between the decolorizing agents and keratin in epidermis have been revealed by X-ray photoelectron spectroscopy to be mainly oxidation of the disulfide linkage of cys...
本文还用电子能谱揭示了表皮角蛋白与上述褪色剂之间的主要反应是胱氨酸的二硫键被氧化成磺酸基团。
The reactions between the decolorizing agents and keratin in epidermis have been revealed by X-ray photoelectron spectroscopy to be mainly oxidation of the disulfide linkage of cystine to sulf...
本文还用电子能谱揭示了表皮角蛋白与上述褪色剂之间的主要反应是胱氨酸的二硫键被氧化成磺酸基团。
The reactions between the decolorizing agents and keratin in epidermis have been revealed by X-ray photoelectron spectroscopy to be mainly oxidation of the disulfide linkage of cystine to sulf...
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