查询词典 diphenyl-carbinol

Objective To evaluate the effect of prenatal and lactational exposure to brominated diphenyl ethers-209 (BDE-209) on the expression of growth associated protein-43 (GAP-43) and brain-derived neurotrophic factors in the hippocampus of the offspring rats.

目的 检测母源性BDE-209暴露对子鼠海马生长相关蛋白-43(GAP-43)、脑源性神经生长因子表达的影响，探讨母源性BDE-209神经发育毒性的可能机制。

With Protosalanx hyalocranius,Coilia nasus and Salangichthys tangkahkeii as test objects,a food web model of main economic fishes in Taihu Lake was established,with which,the distribution characteristics of DDT in the benthos,zooplankton and fishes of the food web were studied by Monte Carlo simulation method,and one-hit model was used to approach the ecological risk of the DDT distribution.

选取滴滴涕(dichloro-diphenyl-trichloro-ethane，DDT)作为太湖持久性有机氯污染的代表性污染物，以大银鱼、陈氏短吻银鱼和刀鲚为研究对象，建立太湖主要经济鱼类食物网模型，并结合DDT的生物化学特性以及蒙特卡罗不确定性分析方法，应用食物网模型研究DDT在食物网主要经济鱼类中的迁移分布特性，分析由此导致的生态风险。

At last, the construstion of C-glycoside by Stille coupling was described, which involved in the use of CuI as catalyst and 4,7-diphenyl-1,10- phenanthroline as ligand was developed.

第5章研究了Stille偶联反应在构筑碳苷中的应用，发展了以CuI为催化剂，4，7-二苯基邻菲罗啉为配体构筑碳苷的方法。

In order to improve the Solubility of PSPI, a series of cocondensation type PSPIs that end-capped with HEA have been synthesized from phyromellitic dianhydride, 4,4'-diaminodiphenyl ether, dimethyl phenylamide and diamino-diphenyl sulphone.

在亚胺化过程中，随酰亚胺化时间的延长，酰亚胺化温度的增高，亚胺化速率变快，亚胺化程度增高。

Starting from chiral proline, pipecolinic acid, piperazine-2-carboxylic acid and 1,2-diphenyl amino alcohol, a series of structurally simple and easily prepared amides were developed as highly effective Lewis basic organocatalysts for the asymmetric reduction of imines with trichlorosilane as the reducing agent, which promoted the reduction of N-aryl imines with high yields and excellent enantioselectivities with an unprecedented substrate spectrum.

本文分别由手性脯氨酸、哌啶酸、哌嗪酸以及氨基醇出发，设计和合成了一系列结构新颖、合成简便、性能优良的酰胺类有机小分子路易斯碱催化剂，以廉价的三氯氢硅为氢源，用这些催化剂催化亚胺不对称还原，得到了非常优良的收率、对映选择性和前所未有的底物普适性。

Diphenyl-5-pyrenyl-2-pyrazoline shows the emission characteristics of pyrene in solution or the emission characteristics of pyrazoline in films and bulk crystals.

但是，DPP超微粒则表现出了分别出自于芘坏386 nm、吡唑啉环465 nm和分子之间的吡唑啉坏-芘环电荷转移激子570 nm的三重发射，而且各自对应各自的激发光谱，即三重发射的光通道互不干涉。

In the first part, five new 4-acyl pyrazolone 4-ethyl-thiosemicarbazones compounds: 1-Phenyl-3-methyl-4-(4-bromo)benzal-pyrazol-5-one N(4)-ethyl-thiosemicarbazone (PM4Br BP-ETSC), 1-Phenyl-3-methyl-4-(4-methyl)benzal-pyrazol-5-one N(4)-ethyl-thiosemicarbaz -one (PM4MBP-ETSC), 1-Phenyl-3-methyl-4-benzal-pyrazol-5-one N(4)-ethyl-thiosemicarba -zone, 1,3-diphenyl-4-benzal-pyrazol-5-one N(4)-ethyl-thiosemicarbazone and 1-Phenyl-3-methyl-4-phenylacetyl-pyrazol-5-one N(4)-ethyl-thiosemi -carbazone have been synthesized and characterized by elemental analyses, IR, 1H NMR spectra and single-crystal XRD.

第一部分合成了五个4-酰基吡唑啉酮缩4-乙基-氨基硫脲化合物：1-苯基-3-甲基-4-（4-溴）苯甲酰基-5-吡唑啉酮缩4-乙基-氨基硫脲(PM4BrBP-ETSC)，1-苯基-3-甲基-4-(4-甲基)苯甲酰基-5-吡唑啉酮缩4-乙基-氨基硫脲(PM4MBP-ETSC)，1-苯基-3-甲基-4-苯甲酰基-5-吡唑啉酮缩4-乙基-氨基硫脲，1，3-二苯基-4-苯甲酰基-5-吡唑啉酮缩4-乙基-氨基硫脲和1-苯基-3-甲基-4-苯乙酰基-5-吡唑啉酮缩4-乙基-氨基硫脲，其中前四个具有光致变色性质。

In this paper, the third monomer 1,4- benzenediamine was introduced into the system of pyromellitic dianhydride and 4, 4-diamino diphenyl. Polyamic acid was synthesized in N-methyl pyrrolidone by solution polycondensation. The chemical structure of the polymer obtained was characterized by infrared spectrum. The dynamic viscosity and intrinsic viscosity were measured. Studies were mainly focused on the influences of monomer solid contents, monomer adding methods on intrinsic viscosity.

本实验在常用的均苯四酸二酐和4，4'—二氨基二苯醚聚酰亚胺体系中，引入第三单体对苯二胺，采用三元共聚的办法合成出聚酰胺酸溶液，对合成产物进行了分子结构的红外光谱分析以及特性粘数、动力学粘度的测试，并讨论了单体固含量、加入方式等对聚酰胺酸特性粘数的影响。

A high temperature resistant polyimide adhesive agent was synthesized by pyromellitic dianhydride and 4,4-diamino diphenyl ether in order for the self-adhesion of aero dynamo magnetic steel plates.

为解决国内无法生产航空电机用自粘磁钢片的难题，用均苯四甲酸二酐和二氨基二苯醚合成一种耐高温聚酰亚胺粘合剂，配合相应的处理工艺，制成一种耐250℃的自粘性磁钢片，成功应用于航空、航天等高科技领域。

Effects of viscosity adjusting agents on morphology of epoxy resin/4,4′-diamino diphenyl sulphone/ polyetherimide blends and preparation of EP microspheres are studied.

研究粘度调节剂对环氧树脂/二氨基二苯基砜/聚醚酰亚胺共混物相结构及制备EP微球的影响。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。