英语人>网络例句>芳 相关的搜索结果
网络例句

与 芳 相关的网络例句 [注:此内容来源于网络,仅供参考]

For the equilibrium system of chloroaluminate ionic liquids-heptane-aromatics,the aromatics distribution coefficients and the selectivities of ionic liquids for aromatics/heptane were influenced by the structure of ionic liquids,structure of aromatics and temperature.

对于氯铝酸离子液体-正庚烷-烃平衡体系,烃在离子液体/烃相间的分配系数Daro和离子液体对烃/正庚烷的选择性Saro/hep随离子液体的结构、烃结构和温度等因素的变化而有所区别。

A new viewpoint was proposed and a new rule was also proposed in determining whether crystallographic equivalence of ether and ketone linkage was tenable after taking account into the variety of aryl ring, the ratio of ketone to ether group, and the fashion of the ether and ketone linked by the aryl ring.

对聚醚酮晶体结构醚酮等效性提出新观点和判据,即讨论聚醚酮类聚合物的醚酮等效性问题必须考虑主链环种类,酮基与醚基比例,酮基、醚基与环连接方式的影响。

This invention provides compounds of Formula; wherein: R is a moiety selected from the group: and n is an integer of 1 or 2; R is selected from hydrogen, amino,-NRR, alkyl of 1 to 12 carbon atoms optionally substituted, aryl of 6, 10 or 14 carbon atoms optionally substituted, alkenyl of 2 to 12 carbon atoms optionally substituted, alkynyl of 2 to 12 carbon atoms optionally substituted, halogen, and a 5 to 10 membered heteroaryl ring optionally substituted, having 1 to 4 heteroatoms independently selected from N, O and S; R is selected from hydrogen, alkyl of 1 to 12 carbon atoms optionally substituted, aryl of 6, 10 or 14 carbon atoms optionally substituted, alkenyl of 2 to 12 carbon atoms optionally substituted, vinyl, alkynyl of 2 to 12 carbon atoms optionally substituted and halogen; R is H, alkyl of 1 to 12 carbon atoms optionally substituted, cycloalkyl of 3 to 8 carbon atoms, bicycloalkyl of 5 to 10 carbon atoms or aralkyl optionally substituted; R is OH or -OH; R and R are each independently H or alkyl of 1 to 12 carbon atoms or when optionally taken together with the nitrogen atom to which each is attached form a 3 to 8 membered saturated heterocyclyl ring; R is alkyl of 1 to 12 carbon atoms optionally substituted; or a tautomer or pharmaceutically acceptable salts thereof.

本发明提供式的化合物;其中:R 1 为选自基团和的部分;n为整数1或2;R 2 选自氢、氨基、-NR 6 R 7 、具有1到12个碳原子的视情况经取代的烷基、具有6个、10个或14个碳原子的视情况经取代的基、具有2到12个碳原子的视情况经取代的烯基、具有2到12个碳原子的视情况经取代的炔基、卤素和具有1到4个独立地选自N、O和S的杂原子的视情况经取代的5元到10元杂基环;R 3 选自氢、具有1到12个碳原子的视情况经取代的烷基、具有6个、10个或14个碳原子的视情况经取代的基、具有2到12个碳原子的视情况经取代的烯基、乙烯基、具有2到12个碳原子的视情况经取代的炔基和卤素;R 4 为H、具有1到12个碳原子的视情况经取代的烷基、具有3到8个碳原子的环烷基、具有5到10个碳原子的双环烷基或视情况经取代的烷基;R 5 为OH或-OH 8 ;R 6 和R 7 各自独立地为H或具有1到12个碳原子的烷基,或当视情况与其所连接的氮原子连接在一起时形成3元到8元饱和杂环基环;R 8 为具有1到12个碳原子的视情况经取代的烷基;或其互变异构体或医药学上可接受的盐。

In chapter 4 an abnormal reaction that the nitro group of 1-aryl-2-nitroethenescan be easily replaced by the organic moity of FG-RZnI using Ni〓 and tertiaryamine as catalyst was first given. The experimental results show that in the presenceof catalytic amount of Ni〓 and tertiary amines, the reaction of FG-RZnI andl-aryl-2-nitroethenes give the substitution products l-aryl-l-alkene, instead ofMichael addition products.

通过实验发现,在催化量的Ni〓及叔胺催化下, l-硝基-2-基乙烯与烷基碘化锌并不进行Michael加成反应,而是发生1-硝基-2-基乙烯中硝基被取代的反应,生成了高产率的1-基-l-烯烃,由于此反应的原料易得、反应条件温和、产物的产率高,因而是合成l-基-1-烯烃的有效方法。

The invention relates to a method for preparing arylamine compounds by the catalytic hydrogenation of arene nitro compounds in a H2O-CO2 system, wherein H2O-CO2 is taken as reaction medium, and the arylamine compounds are prepared by the selective hydrogenation of the arene nitro compounds at a low temperature(between 25 and 100 DEG C), and the catalytic process is controllable, highly efficient and green.

本发明涉及H 2 O-CO 2 体系中烃硝基化合物催化加氢制备胺类化合物的方法。以H 2 O-CO 2 为反应介质,由烃硝基化合物低温(25-100℃)选择性加氢制备胺类化合物的可控、高效、绿色催化过程。

This invention provides a polymerizer and polymerization equipment for producing an aromatic polycarbonate by melt transesterification from a molten prepolymer, of the aromatic polycarbonate, produced from an aromatic dihydroxy compound and a diaryl carbonate.

本发明提供了一种用于通过熔融酯交换由族聚碳酸酯的熔融预聚物生产族聚碳酸酯的聚合器和聚合设备,其中族聚碳酸酯的熔融预聚物由族二羟基化合物和碳酸二基酯生产。

The molecular designs and synthesis of triarylamine-based picolinic acid derivatives used as ancillary ligands, and their cyclometalated iridium complexes used as red-and green-emitters, as well as optoelectronics properites of these compounds were investigated in order to solve current problems of organic/polymeric electroluminescent materials and devices.

本论文针对目前有机/聚合物电致磷光材料和器件存在的问题,开展了新型三胺吡啶羧酸类辅助配体及其红光和绿光环金属铱配合物电致磷光材料的分子设计、合成和光电性能研究,主要包括:(1)设计、合成了三种新型的三胺吡啶羧酸类双齿阴离子型辅助配体;(2)以三胺吡啶羧酸衍生物作为双齿阴离子型辅助配体,合成得到了两个系列的红光和绿光环金属铱配合物;(3)研究了三胺吡啶羧酸类辅助配体分子结构对环金属配合物的紫外吸收和光致发光性能的影响;(4)以环金属配合物为客体,聚芴和恶二唑衍生物为主体,制作了聚合物电磷光器件,研究了含三胺吡啶羧酸类辅助配体、环金属配合物客体材料和聚合物主体材料等分子结构对电致发光性能的影响。

Reasonable grounds include any abuse or attempted abuse of the scheme, or any use or attempted use of a VIP card, or points in a manner which is contrary to these terms and conditions or any reasonable suspicion of dishonesty on the part of a member in connection with the scheme.

购物广场拥有以下权利:停止该贵宾系统;拒绝向某些申请者发行该贵宾卡;在有充分理由的情况下收回,取消贵宾积分卡或者所集积分,或者变更国贵宾积分系统章程;我们所说的充分理由的情况包括:任何滥用或者试图滥用国贵宾卡的行为;任何违反国贵宾卡章程使用贵宾卡以及贵宾积分的行为;所有合理的怀疑与国工作人员有关的不诚实行为。

Blood was said to have gushed out of the arm even though he had been dead for 62 years. Immediately after Fr Francsi Xavier was canonised a Saint in 1622 what remain of the right arm in Rome was merely skeleton. But the body in Goa remains incorrupt minus the right arm. In 1952 the Bishop of Macau decided to put up a statue in front of the St Paul's Church.

一说,1552年12月3日,圣济到中国传教在中国去世,遗体在运回葡萄牙前,暂时安置在马六甲,竟然九个月一直没有腐化,圣济的门徒便向教廷要求为圣济追加圣号,梵帝冈则要门徒割下圣济的右手送回教廷,1614年,圣济的右手被切下,1622年被追封为圣者。

The main aromatic production technologies are reviewed which included catalytic reforming, aromatic extraction, toluene disproportionation and transalkylation process, isomerization of xylenes and separation of PX.

分析了近年来国内外聚酯和对二甲苯的供需状况及未来需求发展趋势;介绍了当前烃主要生产技术,包括催化重整、烃抽提、甲苯歧化与烷基转移、二甲苯异构化和二甲苯分离等;指出了扩大烃原料来源、通过催化剂的改进提高甲苯歧化过程的对二甲苯选择性、提高C9及以上重烃处理能力、提高乙苯转化率等将是未来烃技术的主要发展方向。

第2/100页 首页 < 1 2 3 4 5 6 7 8 9 ... > 尾页
推荐网络例句

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。