查询词典 peroxide

In this paper, the different volume ratio additives'influences on the economy of different fuels as well as the characteristics of combustion and emission have been investigated employing the knowledge about combustion dynamics and chemical reaction dynamics on the base of the gasoline additives application actuality in engine. Dimethyl Carbonate, Diisopropyl Ether and Ditert-Butyl Peroxide are selected as gasoline additives to explore the potential and promotable additives by engine tests in different base fuels.

本文根据汽油添加剂的应用现状并结合内燃机燃烧学、化学反应动力学等知识，选择用碳酸二甲酯、二异丙醚、二叔丁基过氧化物作为汽油添加剂，通过不同基础燃油的发动机台架试验，研究不同添加体积比的添加剂对不同燃油经济性、燃烧特性、排放特性的影响，以探求潜在的可推广使用的汽油添加剂。

METHODS Chlorodehydromethyltestosterone was synthesized from methyltestosterone by cycloxidization with hydrogen peroxide to obtain cycloproxene methyltestosterone, which subjected to chloridization with was hydrochloric acid in the presence of propanone to obtain chloromethyltestosterone, and then was subjected to dehydrogenation with DDQ using PTS as dehydrogenation catalyst in benzene.

以甲睾酮和H2O2环氧化反应得到环氧甲睾酮，再与盐酸在丙酮溶媒中进行氯化反应，得到氯甲睾酮，最后用2，3-二氯－5，6-二氰基对苯醌在PTS催化下脱氢得到脱氢氯甲睾酮。

We studied the radical scavenge enzyme and radical metabolite lipid peroxide in vesical carcinoma tissue and the paracancerous tissue of 32 patients by Xantine Oxidase method and propiolaldehyde method.

应用黄嘌呤氧化酶法和丙二醛法对32例膀胱癌及其癌旁组织中自由基清除酶超氧化物歧化酶活性和自由基代谢产物过氧化脂质含量测定。

In this study, the genomic structure and regulatory elements of ApoD from 10 representive species including protozoan, invertebrate, protochordate and vertebrate were analyzed and compared. The genomic structure of ApoD is less conserved in organisms from protostome to deuterostome invertebrates, while it is highly conserved among chordates including amphioxus and verebrates. All four conserved cysteine residues are present in amino acid sequence of deuterostome ApoDs, while there are only two cysteine residues in amino acid sequence of protostomes ApoD. Structure divergence between protostome and deuterostome ApoD proteins suggests their function difference. The majority of regulatory elements are present in nearly all organism ApoD genes ranging from unicellular protozoan to mammals, suggesting that ApoD plays a very fundamental role, and possesses a conserved regulatory mechanism. However, there also exist some specific regulatory elements, which are present only in certain species and may perform some special roles.ApoD mRNA expression in murine NIH/3T3 fibroblasts exposed to various stresses such as as hydrogen peroxide and UV light shows dose-dependent increase. And a fly homolog of ApoD, Glial Lazarillo, whose overexpression results in increased resistance to hyperoxia as well as a extension of lifespan under normoxia and resistance to starvation without altering lipid or protein content.

本文首先从生物信息学角度对分属于原生动物、无脊椎动物、头索动物和脊椎动物类群的10种动物ApoD的基因结构及调控区的调控元件进行分析及比较，发现：(1)ApoD基因外显子-内含子结构从原生动物草履虫到原口动物再到后口动物海胆的进化过程中不保守，但在分析的几种脊椎动物中相当保守；(2)文昌鱼ApoD基因扮演从无脊椎动物到脊椎动物承上启下的角色，可能代表了脊椎动物ApoD基因原型；(3)四个半胱氨酸保守位点在后口动物中都存在，而在原口动物中只存在两个，原口、后口动物ApoD蛋白一级结构上的差异反映蛋白功能上可能也存在一定差别；(4)调控区大多数主要调控元件为不同动物共有，说明ApoD主要功能及其表达调控在进化中相当保守；(5)ApoD基因个别调控元件是随着物种进化而出现并开始发挥相关作用，如SF-1；还有一些调控元件在进化过程中还没有发现其规律，这说明ApoD某些功能和基因表达调控模式可能因物种不同而存在一定的差异。

I company with operating hydrogen peroxide (27.5%, 35%, 50% and 60%) series, protopine (70%, 96%, 99%, particles) series, insurance powder (85% and 88%, 90%) Family-based, supplemented by other chemical products.

我公司主要以经营双氧水（27.5％、35％、50％、60％）系列、片碱（70％、96％、99％、颗粒）系列、保险粉（85％、88％、90％）系列为主，其他化工产品为辅。

The electron-transfer properties of non-metal antiknock and the effects of peroxide have been investigated with electrochemical technique, aiming at exploying electrochemical method of studying the mechanism of antiknock which has variable quantivalency.

本文用电化学技术研究具有抗爆性的非金属化合物的电子转移性质及过氧化物的影响，旨在探讨研究变价抗爆剂的抗爆机理的电化学方法。

The vacuum package and adding deoxidant model 100 package with material of low venting quality can constrain the accelerating speed of peroxide values,TBA values and carbonyl group values,and delay rancidification obviously.

结果表明：采用低透气性的包装材料添加100型铁系脱氧剂抽真空包装，可明显抑制过氧化值、TBA值和羰基价的增加，延缓酸败。

Results:The cell aggregations had differences in shape as well as size, flavone content, enzyme activities, growth speed and so forth. The flavone content of the smallest cell aggregation was approximately twice compared to the larger ones, and its malonaldehyde content, the phenylalanine ammonialyase and peroxide enzyme activities and recultivate curve presented the same change tendency.

结果：不同的细胞聚集体在形态大小、黄酮含量、酶的活性、生长速度等方面均存在着差异，其中颗粒最小的细胞聚集体黄酮含量约为颗粒较大的细胞聚集体的2倍，并且其丙二醛含量、苯丙氨酸解氨酶及过氧化物酶的活性及再培养曲线均具有相同的变化趋势。

Regenerative process was determined by comparing the concentration difference of Na+ in used and unused regenerant, as well as the concentration of Na+ in hydrogen peroxide out of resin columns.

比较浸泡失效树脂前后再生剂中Na+浓度变化和工业级H2O2流经交换柱后Na+浓度，确定适宜的再生方法。

Utilizing the intense catalysis of metal ions to peroxide oxygenating rhodanine, a catalytic fluorescence method of using the new type rhodanine to determine trace iron, cobalt, copper, tin and antimony was established.

利用痕量金属离子对过氧化氢氧化若丹宁具有强烈催化作用的性质，建立了一系列利用新型若丹宁物质催化荧光法测定痕量铁、钴、铜、锡和锑的新方法；较系统研究了系列若丹宁衍生物在催化荧光法测定金属离子的各影响因素，确定了反应的最佳条件，计算了动力学参数。

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。