二二二

The experimental result showed that three byproducts was formed and the optimal condition was as follows: the molar ratio of ethylene glycol, hydrogen bromide, and acetic acid was 1:1:1.3, when ethylene glycol was 1 mol, refluxed 5 h under the action of 100 mL toluene.

结果表明：较适宜的合成条件为乙二醇1 mol， n：n：n=1：1：1.3，在带水剂甲苯(100 mL)的作用下，回流反应5 h，约4 h后分两次追加0.12×2 mol醋酸酐，合成效果最好，产率可达到95%，反应副产2-溴乙醇及少量的1， 2-二溴乙烷、乙二醇二乙酸酯和二乙二醇二乙酸酯。

EH detected in Lanzhou reach of the Yellow River included naphthalene, phenanthrene, DBP, DEHP and benzothiazole and the detection rates of the five EH were 40%, 60%, 100%, 100% and 20% respectively.

结果 共定性检出有机类环境激素10种，即邻苯二甲酸二异丁酯、邻苯二甲酸正丁酯、邻苯二甲酸二（2-乙基己基）酯、邻苯二甲酸丁酯、邻苯二甲酸异辛基酯、邻苯二甲酸丁环己酯、苯并噻唑、萘、菲、苯并异噻唑。C断面检出的环境激素浓度最高，菲、DBP、DEHP浓度分别高达0.320、13.89、109.93μg/L.A断面次之，B断面检出的环境激素浓度与A断面相比有所下降，E断面检出的环境激素与其他断面相比，浓度相对较低，D断面所检出的环境激素与C断面比较，有一定下降，但下降不明显。

Co condensation type polyamides were prepared by using 1,2 dihydro 2 (4 aminophenyl) 4 [4 (4 aminophenoxyl) phenyl] phthalazin 1 one and 4,4′ diamino biphenyl ether or 4,4′ diamino biphenyl methane as the co diamine monomers and aromatic diacid as the co condensation monomer.

采用 1 ，2 -二氢-2 -( 4-氨基苯基)-4 -[4 -( 4-氨基苯氧基)-苯基 ]-二氮杂萘-1 -酮、4 ，4′-二氨基二苯醚、4 ，4′-二氨基二苯甲烷为共缩聚二胺单体与对苯二甲酸进行共缩聚反应，制备共缩聚型聚酰胺。

2A series of alternating polyamide-imideswith fluorenyl cardo structure was synthesized by "one-pot" polycondensation of cardo diamines,trimellitic anhydride and various aromatic diamines including p-phenylene diamine,m-phenylene diamine, 4,4\'-oxydianiline,3,4\'-oxydianiline,2,2-bis[4-(4-aminophenoxy)phenyl]propane, 2,2-bis[4-(3-aminophenoxy)phenyl]propane respectively using triphenyl phosphite as condensing agents.

采用&一锅法&(One—pot Synthesis)，由Cardo二胺、偏苯三酸酐和不同二胺包括对苯二胺、间苯二胺、4，4\'—二氨基二苯醚、3，4\'—二氨基二苯醚、2，2—双[4—(4—氨基苯氧基苯基]丙烷和2，2—双[4—(3—氨基苯氧基)苯基]丙烷合成了一系列含有芴基Cardo结构的交替聚酰胺酰亚胺。

2A series of alternating polyamide-imideswith fluorenyl cardo structure was synthesized by "one-pot" polycondensation of cardo diamines,trimellitic anhydride and various aromatic diamines including p-phenylene diamine,m-phenylene diamine, 4,4\'-oxydianiline,3,4\'-oxydianiline,2,2-bis[4-(4-aminophenoxy)phenyl]propane, 2,2-bis[4-(3-aminophenoxy)phenyl]propane respectively using triphenyl phosphite as condensing agents.

采用&一锅法&O(来源：88AB57C论文网www.abclunwen.comne—pot Synthesis，由Cardo二胺、偏苯三酸酐和不同二胺包括对苯二胺、间苯二胺、4，4\'—二氨基二苯醚、3，4\'—二氨基二苯醚、2，2—双[4—(4—氨基苯氧基苯基]丙烷和2，2—双[4—(3—氨基苯氧基)苯基]丙烷合成了一系列含有芴基Cardo结构的交替聚酰胺酰亚胺。

Firstly, the reactions of glutaric acid, sebacic acid and propargyl alcohol afforded two dipropargylesters:(CH≡CCH_2OCO)_2(CH_2)_3 (compound 1) and (CH≡CCH_2OCO)_2 (CH_2)_8 (compound 2),respectively.

首先，本文分别选用戊二酸，癸二酸与丙炔醇反应得到了两个新的有机二酸二丙炔醇酯：戊二酸二丙炔醇酯(CH≡CCH_2OCO)_2(CH_2)_3(化合物1)和癸二酸二丙炔醇酯(CH≡CCH_2OCO)_2(CH_2)_8(化合物2)。

Niobic acid; catalytic synthesis; di-2-ethylhexyl phthalate; di-n-octyl phthalate; di-2-ethylhexylmaleate; di-n-octyl maleate; cyclohexene; modification of catalyst; dynamics of esterification

工程科技I，化学，有机化学铌酸；催化合成：邻苯二甲酸二辛酷；邻苯二甲酸二异辛酯；顺丁烯二酸二辛酯：顺丁烯二酸二异辛酯：环己烯；改性；动力学

The density, binding energy and radical distribution function of HTPB/plasticizers blends and binder hydroxyl-terminated polybutadiene, and plasticizer dioctyl sebacate, dioctyl adipate, dibutyl phthalate, dioctylphthalate were calculated by molecular dynamics simulation for evaluating compatibility of HTPB and plasticizers.

为评价端羟基聚丁二烯与增塑剂相容性的优劣，采用分子动力学模拟方法对纯HTPB、增塑剂癸二酸二辛酯、己二酸二辛酯、邻苯二甲酸二丁酯、邻苯二甲酸二辛酯及HTPB与增塑剂组成的共混物的密度、结合能和径向分布函数等进行了计算。

It is necessary to carry out a thorough study on pest control technology with DMDS, with an expectation of obtaining a new fumigant of methyl bromide alternative.2. Investigation of the toxicity of fumigation on adult and mixed stages of the three most tolerant insect species -- Sitophilus oryzae, Rhyzopertha dominica and Tribolium castaneum -- under a range of EtF、DMS and DMDS doses in a Flow-through Fumigation System shows that the FTFS procedure offers a constant concentration of fumigant with low CO2 concentrations and ensures that the fumigant toxicity is effectively not compromised by CO2. In comparison with chamber fumigation method, the toxicity data of EtF、DMS and DMDS obtained from this experiment is more accurate by using FTFS.

主要研究结果如下：1、甲酸乙酯和二甲基二硫对仓储害虫具有良好的控制作用，应加快甲酸乙酯替代溴甲烷防治仓储害虫开发应用，同时，二甲基二硫是很有潜力的仓储害虫防治熏蒸剂，要深入进行二甲基二硫控制有害生物的技术研究，以期获得新的溴甲烷替代熏蒸剂。2、利用循环熏蒸系统测定了甲酸乙酯、二甲基二硫和甲硫醚对米象Sitophilus oryzaeL。

The main synthetic methods and application prospect of organic energetic dinitrate salt s,ethylenediamine dinitrate,azobisformamidine dinitrate,carbohydrazinium dinitrate,polyaminoguanidine dinitrate and tetrazine dinitrate,were reviewd with 26 references.

综述了乙二胺二硝酸盐、偶氮二甲醚二硝酸盐、碳酰肼二硝酸盐、氨基胍类二硝酸盐和四嗪类二硝酸盐等有机含能二硝酸盐的主要合成方法及应用前景。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。