查询词典 aromatic

A certain amount of naphthenic,alkenyl and aromatic acids are also generated in the degraded samples.

可以推断，短短芽孢杆菌和蜡状芽孢杆菌对大庆原油的降解以氧化降解为主要途径，存在一种非常规的次末端氧化，同时兼有末端氧化和双末端氧化，生成单脂肪酸、羟基脂肪酸和二羧酸。

The resin composition for a platable substrate of the present invention comprises 100 parts by weight of a resin composition comprising 10 to 60% by weight of a graft copolymer prepared by graft polymerization of a rubbery polymer (A1) and a monomer component (A2) containing an aromatic alkenyl compound monomer unit and a vinyl cyanide compound monomer unit and 40 to 90% by weight of the other polymer provided that the total amount of the components (A and is 100% by weight, and 5 to 40 parts by weight of a phosphate ester flame retardant having a molecular weight of more than 326 or 2 to 40 parts by weight of a red phosphorus flame retardant.

本发明涉及一种镀覆基材用树脂组合物，其特征在于，该树脂组合物是在100质量份的树脂组合物中，混合5～40质量份的分子量超过326的磷酸酯系阻燃剂或2～40质量份的红磷系阻燃剂形成的物质，其中树脂组合物由10～60质量％的接枝共聚物和40～90质量％的其它聚合物组成(A+＝100重量％，接枝共聚物通过在橡胶质聚合物(A1)上接枝聚合含有芳香族烯烃化合物单体单元和氰化乙烯基化合物单体单元的单体成分(A2)得到。

Understand the mechnism of aromatic electrophilic substitution reactions and the characteristics of the benzonium ion; grasp halogenation, nitration, sulfonation, Friedel-Crafts alkylation and acylation reactions; understand the effect of substituents on reactivity and orientation; know the side-chain reactions of alkylbenzenes and alkenyl benzenes; be familiar with the synthetic methods and application of derivatives of benzene.

了解苯环亲电取代反应机理及苯正离子的特性；掌握苯环卤化、硝化、磺化、Friedel-Crafts 烷基化和酰基化反应及取代效应；了解烷基苯、烯基苯的支链反应和苯衍生物的合成应用。

The allylation reactions of aromatic aldehydes or ketones with allyl bromide were carried out in 60%～98% yields with Sn/H2O under ultrasound irradiation at room temperature for 45 min.

超声波作用下，Sn/H2O体系中，芳香醛酮在室温下进行烯丙基化反应，45min内得到60%～98%的烯丙基化产物

In this system, the allylation was selectively toward aldehyde in the presence of ketone; the allylation squinted toward aliphatic aldehyde in the presence of aromatic aldehyde.

该方法不仅对于醛和酮具有很高的化学选择性，而且对于芳香醛和脂肪醛也有很好的选择性，当存在芳香醛时，脂肪醛优先发生烯丙基化反应。

Amino-sulfonic acid single aromatic ring type high range water reducer was synthesized form aminobenzene sulfonic acid, phenol and formaldehyde. The influence of monomers ratio, reaction temperature reaction time, pH value, the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

Amino-sulfonic acid single aromatic ring typehigh range water reducer was synthesized form aminobenzene sulfonic acid,phenol and formaldehyde. The influence of monomers ratio,reaction temperature,reaction time,pH value,the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

A new triphenylamine-containing aromatic diamine monomer, 4-[4-(1-adamantyl)phenoxy]-4',4-diaminotriphenylamine, was synthesized from cesium fluoride-mediated N-arylation of 4-(1-adamantyl)-4'-aminodiphenyl ether with 1-fluoro-4-nitrobenzene and subsequent reduction of the dinitro intermediate.

摘要 本研究首先使用 4-(1-adamantyl)-4'-aminodiphenol ether 与 1-fluoro-4-nitrobenzene，於DMSO中，以氟化铯为媒介，进行氮-芳香化反应（N-arylation），随后再进行中间产物的还原反应，制得一个种新型具有三苯胺结构的芳香族二胺单体 4-[4-(1-adamantyl)- phenoxy]-4'，4-diaminotriphenylamine。

Family of perennial aromatic herbs: genera Saururus; Anemopsis; Houttuynia.

多年生具有芳香的草本植物科；三白草属；假银莲花属。

The results showed the different fluorescence property with naphthalene due to the interaction, congruence of the molecules and formation of inter- or intramolecular exciplex.;A series of dithioesters with different aromatic rings such as naphthally, anthracyl and pyrene in R groups were synthesized. The polymerizations of MMA using these dithioesters as the RAFT agents were investigated.

结果表明：在NMNDT和它获得的聚合物溶液中，由于分子间的相互作用、叠合，激发态分子与基态分子形成了激基缔合物，引起了萘环荧光的淬灭，使其发光特性与原来萘的发光特性不同；探索了二硫代酯中R基团的立体和电子等性能对MMA的RAFT聚合的影响。

Must have Coordination and negotiation skill, flexible ideas, and be punctilious person.

必须具备较好的协调与谈判能力，头脑灵活，工作认真仔细

Result: 18 patients are all with simple eye.The pigment mole lies in nasal and temple sides of the ball conjunctiva,in which 2 lie in lacrimal caruncle and semilunar plica.

结果：18例患者均为单眼，色素痣大多数位于内外侧睑裂部球结膜面，2例位于泪阜及半月皱襞，经激光治疗后，10例色素痣消失，有5例行再次激光后消失，2例行第三次激光后消失，1例第四次激光后消失。