查询词典 tris nitro-methane

Polyether based polyurethanes are among the most interested polymers which have been used suitably for the biomedical applications, especially in cardiovascular system. In order to meet the requirements of the artificial heart program in our college, two sorts of polyether based polyurethane elastomers, PU-BD and PU-MC, were synthesized both based on prepolymer formed by the reaction of polytetramethylene ether glycol and diphenyl methane-4, 4′-diisccyanate, with 1, 4-butanediol and 3, 3′-dich...

本文介绍了两种聚醚型聚氨酯弹性体PU—BD和PU—MC的合成路线，两种弹性体的物理机械性能(曲挠、抗张强度、伸长率等)的测试结果，两种弹性材料的生物相容性试验(凝血时间，慢性组织相容性、细胞毒性等)及其结果、各种试验结果表明，这两种聚氨酯弹性材料的耐曲挠性能和生物相容性都已达到现阶段人工心脏研究工作的要求，为两种有希望的医用高分子材料。

Based on reviewing of functionalization of saturated carbon by catalytic oxidation with metalloporphyrins and metal phthalocyanines as a mimic of the enzyme cytochrome P-450, two reaction systems of which one was the preparation of 4, 4'-dinitrostilbene-2, 2'-disulfonic acid from 4-nitrotoluene2-sulfonic acid and the other was the preparation of 4, 4'-bis (dimethylamino -diphenyl) phenylmethanol from 4, 4'-bis (dimethylamino-diphenyl) phenyl methane , were specifically studied as carfunctionalization and oxyfunctionalization of saturated carbon.

本文在全面综述金属卟啉和金属酞菁类模拟细胞色素P-450酶催化剂催化氧化饱和碳原子功能化的基础上，选择由4-硝基甲苯-2-磺酸制取4，4'-二硝基二苯乙烯-2，2'-二磺酸和由4，4'-二苯基甲烷制取4，4'-二苯基甲醇两个反应体系进行饱和碳原子碳功能化和氧功能化的具体研究。

Based on data gained from in - site , ANSYS finite element analysis software is used , numerical value simulation was carried out in stress distribution、mechanics property、 methane removal of coal body which is located in front of drivage face before and after taking hydraulic pressing measures.

以现场实测数据为基础，利用ANSYS有限元分析软件，对水力挤出措施实施前后的掘进工作面前方煤体应力分布、力学性质、瓦斯运移进行数值模拟，研究了水力挤出措施的消突机理。

Based on data gained from in- site, ANSYS finite element analysis software is used, numerical value simulation was carried out in stress distribution、 mechanics property、 methane removal of coal body which is located in front of drivage face before and after taking hydraulic pressing measures.

以现场实测数据为基础，利用ANSYS有限元分析软件，对水力挤出措施实施前后的掘进工作面前方煤体应力分布、学性质、斯运移进行数值模拟，研究了水力挤出措施的消突机理。

This design on the main Nanshan coal mine methane drainage occurrence, the necessity and feasibility, drainage methods to determine the expected effect, as well as drainage, etc; and the elaboration of natsun mines in accordance with specific parameters on mine, some of the roadway and workface, drivage workface for gas drainage.

本设计主要对南山煤矿矿井瓦斯赋存情况、抽采的必要性及可行性、抽采方法的确定以及抽采效果的预计等进行相应的阐述；并根据南山煤矿的具体参数，对矿井的一些巷道及采煤工作面、掘进工作面进行瓦斯抽采。

The thermodynamic functions of NO removal by low carbon hydrocarbons such as methane, ethane, ethene, ethine, propane and propene are calculated,and enthalpy changes of reaction producing activated particles from low carbon hydrocarbons in electric field are calculated to find out the appropriate low carbon hydrocarbons for removing NO.

通过计算甲烷、乙烷、乙烯、乙炔、丙烷和丙烯等低碳烃与NO反应的热力学函数和低碳烃在电场作用下产生活性粒子的反应焓变，找出合适的低碳烃作为脱除NO的添加剂。

Artist's impression of the extrasolar planet HD 189733b, now known to have methane and water.

艺术家想象中的系外行星HD189733b，现在了解到，存在甲烷和水。

Ammonia and nitrate, ferrous ion, sulfide, various gases and organic acids are sequentially formed, corresponding to the activities of aerobic and facultatively anaerobic bacteria, sulfate-reducing bacteria, and methane-producing bacteria with the development of reduction reactions.

在还原过程中，随着好氧细菌、兼性厌氧细菌、硫酸还原菌和甲烷菌的活动，相继形成氨、硝酸根离子、亚铁离子、硫化物、气体物质及有机酸。

Deep coal mines are under the complex mining environment conditions of high in-situ pressure and geotherm, as well as high methane content in coalbed and pore pressure dissipation.

根据我国煤炭资源勘探开发中存在的问题与现状，在深层煤矿床赋存规律、开采地质条件及综合探测研究方面，急待解决的关键科学问题是：a。

Luliang Basin is of a series of good conditions of forming commercial biogenic methane gas reservoirs,such as the excellent type of kerogen,high organic matter abundance,low-salinity hydrochemical property,suit a ble geotherm,immature hydrocarbon source rocks and fair structural-lithological traps,etc.

极佳的生气母质类型与丰富的有机质、低矿化度水化学特征、地温适中、未成熟的烃源岩及良好的构造—岩性圈闭等因素，是形成陆良盆地工业性生物甲烷气藏的良好条件。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。