己

Furthermore, seven compounds were isolated from CSPD and their chemical structures were authenticated by spectral analysis as tetrandrine, fangchinoline, tetrandrine-2′- N-β-oxide, tetrandrine-2′- N-α-oxide, dicentrine, dicentrinone, and adenine, respectively.

从粉防己专属性对照物质中分得粉防己碱、防己诺林碱、tetrandrine-2′- N-β-oxide，tetrandrine-2′- N-α-oxide，荷包牡丹碱、荷包牡丹酮和腺嘌呤等7个成分，经波谱分析鉴定了结构。

The fish samples were cleaned up by Florisil, then analyzed by GC-EI-MS to determine eight phthalic acid esters, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, butyl benzyl phthalate, dipentyl phthalate, dicyclohexyl phthalate, dihexyl phthalate and diethyl hexyl phthalate.

鱼肉样品以Florisil硅藻土层析柱净化后，经气相色谱-电子轰击离子源-质谱法分析其中8种邻苯二甲酸酯含量：邻苯二甲酸二乙酯、邻苯二甲酸二丙酯、邻苯二甲酸二丁酯、邻苯二甲酸丁基苄基酯、邻苯二甲酸二戊酯、邻苯二甲酸二环己基酯、邻苯二甲酸二己酯、邻苯二甲酸二(2-乙基己基)酯。

The results showed that the unsaturated fatty acid content of pecan kernel oil was 89 0%,and 13 kinds of unknown components such as nonadecaol,8 hexyl pentadecane,10 methyl eicosane,11,14 eicosadienoic acid,1 bromo 8 heptadecyne,9 hexyl heptadecane,tetracosane,13 docosenoic acid,1 bromo 7 nonadecyne,15 tetracosenoic acid,hexacosanoic acid,7 hexyl ei...

研究结果表明：山核桃仁油中的不饱和脂肪酸 w =89 0 %，未知成分是十九醇、8 己基十五烷、10 甲基二十烷、11，14 二十碳二烯酸、1溴 8 十七炔、9 己基十七烷、二十四烷、13 二十二碳烯酸、1 溴代 7 十九炔、15 二十四碳烯酸、二十六酸、7 己基二十烷、二十七烷共 13种，其中13 二十二碳烯酸、15 二十四碳烯酸、十九醇等具有较强的生理活性和药用价值

A method has been developed to determine residual stilbenes such as diethylstilbestrol, dienestrol and hexestrol in animal tissues using solid phase extraction and gas chromatography-mass spectrometry.

建立了动物组织中己烯雌酚、己二烯雌酚和己烷雌酚残留量的气相色谱-质谱分析方法。

Good thermal stability and self-extinguishing behavior was observed with the cured polybenzoxazine resins. Second, furan-containing benzoxazine monomers, P-FBz, BPA-FBz, and 4FP-FBz were prepared using furfurylamine as a raw material. Formation of furfurylamine Mannich bridge networks in the polymerizations of P-FBz and BPA-FBz increased the cross-linking densities and thermal stability of the resulting polybenzoxazines. P-FBz and BPA-FBz- based polymers also exhibited high glass transition temperatures above 300℃, high char yields, and low flammability with a limited oxygen index value of 31. The dielectric (Dk3.21–3.39) and mechanical properties (high storage modulus of 3.0–3.9 GPa and low coefficient of thermal expansion of 37.7– 45.4 ppm) of the P-FBz and BPA-FBz-based polymers were superior or comparable to other polybenzoxazines. 4FP-FBz used for polybenzo- xazine modification by means of formation of benzoxazine hybridation with P-FBz.

第二部份以2-呋喃甲胺为起始物，制备了P-FBz、4FP-FBz与BPA-FBz 三个含呋喃官能基之氧代氮代苯并环己烷的单体；BPA-FBz与P-FBz於开环聚合中形成之Mannich bridge网状结构有效地提升聚氧代氮代苯并环己烷聚合物之交联密度与热安定性；Poly与Poly具有大於300℃之玻璃转移温度、高的焦炭生成率与具有31之极限氧指数(Limited oxygen index， LOI)的难燃性特质，Poly与Poly之介电常数(Dk=3.21~3.39)与机械性质[3.0~3.9 GPa的储存模数与37.7~45.4ppm之低热膨胀系数( Low coefficient of thermal expansion， Low CTE)]均较其他聚氧代氮代苯并环己烷为优；4FP-FBz具有低之介电常数(Dk=2.7)，以其作为降低介电常数之反应型改质剂，与P-FBz混成，证实可有效地降低Poly的介电常数。

The optimum conditions are: molar ratio of glycol to cyclohexanone is 1.6:1, the quantity of catalyst is equal to 0.25% of feed stocks, and the reaction time is 40 mm. H3PW12O40/MCM-48 is an excellent catalyst for synthesizing cyclohexanone ethylene ketal and its yield can reach over 80.63%.

实验表明：H3PW12O40/MCM-48是合成环己酮乙二醇缩酮的良好催化剂，在n：n＝1：1.6，催化剂用量为反应物料总质量的0.25%，环己烷为带水剂，反应时间40min的优化条件下，环己酮乙二醇缩酮的收率可达80.63%。

The experiment results show that the yield of hexane catalyzed by the nano-fibrous catalyst was 4.7 times higher than that of PdCl_2/γ-Al_2O_3 catalyst. The hydrogenation ofα-tetradecylene, cyclohexene, nitrobenzol and styrene by the nano-fibrous catalyst was also studied, the selectivity to primary products of the hydrogenation of cyclohexene, nitrobenzol and styrene was 100%.

苯乙烯-丙烯腈共聚物负载纳米钯超细纤维形态催化剂在常温，氢气压力101.3Pa下催化α-己烯加氢时表现出很高的活性，催化剂PSAN-Pd10催化氢化α-己烯选择生成正己烷的产率在150 min就达到87%以上，与无机物负载的催化剂相比，加氢效果有显著提高，并且催化剂的重复使用性较好。

The aim of this study was to develop a novel amphiphilic functional block poly(ε-caprolactone) bearing ketone groups MPEG-b-P(OPD-co-CL. 2-oxepane-1, 5-dione was copolymerized with ε-caprolatone in which methoxy poly (MPEG, Mn=5 000) and stannous octoate were used as initiator and catalyst, respectively. The syntheses were conducted by bulk and solution polymerization. 1H NMR results showed that peak position and splitting of the polymers synthesized through solution polymerization were consistent with theoretical data, demonstrating the products were designed block copolymers. While in the bulk polymerization, polymer peak position was changed due to their high reaction temperature, suggesting their structural variation.

将带有羰基官能团的4-羰基己内酯和ε-己内酯分别在甲氧基聚乙二醇(MPEG，Mn=5 000)为引发剂，异辛酸亚锡为催化剂溶液和本体体系中开环聚合，合成了两亲性侧基带有羰基官能团的聚己内酯嵌段共聚物MPEG-b-P(OPD-co-CL.1H NMR结果表明采用溶液聚合法合成的聚合物各峰的峰位置和分裂情况与理论一致，证明了产物是实验所设计的嵌段共聚物，而采用本体聚合法合成的聚合物由于温度的影响，聚合物各峰的峰位置发生了变化，说明其结构发生了变化；差示扫描量热法分析结果表明随着OPD单体含量的增加，聚合物的熔点，玻璃化转变温度和熔融焓增加；热失重测试结果表明OPD单体的引入增加了聚合物的热敏感性。

The principles and process of cyclohexanone oximation in hydroxylamine-cyclohexanone process were introduced. Influencing factors such as temperature, feed-in distribution of cyclohexanone, pH value of buffer solution and pulse speed were discussed in detail. After some improvement measures were put forward and applied according to these factors, the efficiency of oximation reaction increased.

介绍了羟胺-环己酮法中环己酮肟化反应的原理及工艺流程，讨论了反应温度、环己酮进料的分布、缓冲溶液的pH值、脉冲速度等因素对肟化反应效率的影响，针对各个影响因素提出了改进肟化反应条件的措施并应用于生产实践，提高了肟化反应效率。

Using cyclohexanol as raw material, in presence of sodium tungstate and phosphotungstic acid as catalyst, the technique for oxidizing cyclohexanol to cyclohexanone with hydrogen peroxide were discussed.

以环己醇为原料、钨酸钠和磷钨酸配合为催化剂，探讨了双氧水为氧化剂氧化环己醇合成环己酮的工艺方法。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。