丁酸

With regard to the current society, much hubbub in the European Union ban on the use of four kinds of children's toys, plasticizers, Jiangnan University, and Dr. LG Chemical in two epoxy esters, briefed the meeting on high molecular weight plasticizers, citrate butyl ester, such as trimellitic several environment-friendly non-toxic plasticizer that can be replaced ethylhexyl phthalate, ethylhexyl adipate, whether it is synthetic process, the source of raw materials are not a problem, but there are differences in price, but into the large-scale production, the price will be decreased substantially.

关于目前社会上闹得沸沸扬扬的欧盟禁止在儿童玩具中使用四种增塑剂，江南大学和LG化学的两位博士在会上介绍了环氧酯类高相对分子质量增塑剂、柠檬酸三丁酯、偏苯三酸酯等几种无毒环保型增塑剂，认为完全可以取代邻苯二甲酸乙基己酯、己二酸乙基己酯，无论是合成工艺、原料来源都不成问题，只是在价格上还有些差异，但进人大规模生产后，价格会有较大幅度下降。

The reaction results show that the catalytic activity and selectivity of W-HMS prepared with tungstic acid is better than that prepared with sodium tungstate. And the consumption of t-BuOH also is successfully reduced.

实验结果表明：钨酸是制备W-HMS催化剂很好的钨源，以钨酸为原料制备的催化剂具有很高的催化活性和选择性，使溶剂叔丁醇用量大为减少。

The analytes were extracted from alkalized plasma. ion pair extracted with TBAP further purified and concentrated by SPE method, derived and detected finally by GC/MS.

在碱性环境中提取血浆样品中积雪酸，高氯酸四丁基铵与之形成离子对缔合物，经固相萃取、净化、衍生，采用内标法进行GC/MS检测。

Peruvian chefs, elbow deep in almost 7 tons of diced fish, onions and lime, on Sunday smashed the Guinness record for the world's largest amount of ceviche, a Peruvian seafood specialty.

7日，秘鲁厨师动用大约7吨鱼肉丁、洋葱块和柠檬，制出了世界上最大分量的酸橘汁腌鱼，打破了吉尼斯世界纪录。酸橘汁腌鱼是秘鲁海鲜招牌菜。

Segmented polyester polyurethaneurea based n 4, 4'-disphenylmethane diisocyanate, ethylene diamine and polybutylene adipate elastomers and their deuterated polymers were studied by means of IR spectroscopy.

用红外光谱法对基於4，4'-二苯基甲烷二异氰酸酯、乙二胺和聚己二酸丁二醇酯的嵌段聚酯型聚脲氨酯弹性体及其氘化產物进行了研究。

The synthses of a new type of surfactant-sodium bis sulfuo-succinate was first reported, it could form reversed micelle with iso-octane. This reversed micellar system could extract macromolecular protein-hemoglobin as well as cyt-C.

首次报道了一种新型表面活性剂丁二酸二酯磺酸钠的合成，考察了它与异辛烷形成的反胶束体系在提取小分子的细胞色素C和相对分子质量较大的血红蛋白的行为。

In this research, leaves of maize grown on soil pots and vermiculite pots were treated with jasmonate methyl ester, salicylic methyl ester and third instar larvae of the maize stalk borer and were assessed for the effect on the contents of DIMBOA and phenolic acid, and the expression of defense genes in leaves and roots, the content and species of root exudates and the diversity of rhizosphere bacteria community.

本文通过土壤盆栽、蛭石盆栽实验，用化学分析和分子生物学方法研究不同浓度茉莉酸甲酯、水杨酸甲酯及玉米螟3龄幼虫处理玉米（粤农9号）叶片对叶片和根中丁布、酚酸及防御基因的表达量的影响；且探讨处理之后根系分泌物的种类和组分及土壤细菌群落多样性的变化。

Optimal experimental conditions were as follows: 2μL toluene microdrop exposed for 20min in a 3mL aqueous sample placed in 4mL vial and stirred at 600rpm/min.

研究了单滴液相微萃取与气相色谱测定水中以酞酸二甲酯和酞酸二丁酯为代表的酞酸酯类化合物。

The simple and fast determination method presented is based on initial chelation of Sn4+, Cu2+, Pb2+ and other metal ions with EDTA and its subsequent decomposition with trihydroxybenzoic acid, mercaptosuccinic acid and dithiocarbamic propanoic acid.

本文提出的简易、快速测定方法是用EDTA螯合锡、铜、铅和其它金属离子，然后分别用三羟基甲酸、巯基丁二酸和氨荒丙酸解蔽。

But in fermented juice, the most of volatile components is esters, about 74.92%, the propanoic acid, 2-hydroxy-, butyl ester is 64.36%.

而在诺丽鲜果中脂肪酸是主要的挥发性成分，占总挥发性成分43.34%，十八烯酸就占了20.34%；在诺丽发酵汁中主要的挥发性成分是酯类，占了总挥发性成分的74.92%，而2-羟基丙酸丁酯就占了64.36％。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。