己二烯

The selective response of Holotrichia oblita to different plant volatiles (1) By steam distillation and dichloromethane, in the Y-tube olfactometer bioassay, the crude extract from castor-oil plant leaves was obviously attractive to female and male of Holotrichia oblita than cotton, Abutilon theophrasti Medic, control dichloromethane.

该结果表明，蓖麻叶片粗提物中含有引诱华北大黑鳃金龟的化学物质。(2)华北大黑鳃金龟成虫对8种化合物的嗅觉仪行为反应结果表明，无论对雌虫还是雄虫，肉桂醛、邻苯二甲酸二丁酯、苯酚、香草醛、苯甲醛的诱虫活性显著高于顺-3-己烯醇。

This invention applies mild condition uses substituent group triphenylamine aldehyde or triphenylamine dialdehyde as raw material to react by heating with 2-(5,5-dimethyl-3-vinylcyclohexenyl-2-enylidene)propanedinitrile group to produce the intermolecular charge transfer chromogen with high decomposition temperature, non-coplanar structure, and triphenylamine group.

本发明采用温和的手段，将取代基三苯胺单醛或取代基三苯胺双醛为原料与2-(3，5，5-三甲基环己烯-2-烯亚基)丙二腈共热生成具有高的热分解温度、非共平面空间结构的含三苯胺基团的分子内电荷转移生色团。

A gas chromatographic-mass spectrometric method for the simultaneous determination of environmental estrogens (including 4-nonylphenol, bisphenol A,diethylstilbestrol and 17α-ethinylestradiol) and endogenous estrogens (including 17α-estradiol, 17β-estradiol, estriol and estrone) in urine and bed mud is reported.

报道了尿及河底泥中环境雌激素(壬基酚、双酚A、己烯雌酚、17α-乙炔基雌二醇)和内源性雌激素(17α-雌二醇、17β-雌二醇、雌三醇、雌酮)的气相色谱-质谱测定法。

To investigate the pollution levels, occurrence and distribution of estrogens, six estrogens in the surface sediments of Wenyuhe River were analyzed quantitatively by GC/MS following ultrasonicated extraction including diethylstilbestrol, estrone(E1),β-estradiol(E2), 17α-ethynylestradiol(EE2), estriol(E3), and β-estradiol 17-valerate. Six estrogen concentrations ranged from 0.39-36.6ng/g and the mean concentration was 10.2ng/g.

为了调查温榆河沉积物中雌激素物质的污染状况，采用超声萃取、GC/MS法研究了6种常用雌激素（包括己烯雌酚DES、雌酮E1、雌二醇E2、乙炔基雌二醇EE2、雌三醇E3和戊酸雌二醇EV）在北京温榆河上游及干流表层沉积物中的含量水平，并对其分布及来源情况进行了分析。

These results suggest that MmedCSP1 is involved in the process of storing and releasing methyl salicylate, pentane, ocimene,β-ionone, 3, 4-dimethylbenzaldehyde, 2-hexanone and cis-3-hexen-l-ol for M. mediator, and has different transport capability in storing and releasing those odorants.

这些结果提示MmedCSP1参与中红侧沟茧蜂对水杨酸甲酯、戊烷、罗勒烯、β-紫罗兰酮、3，4-二甲基苯甲醛、2-己酮和叶醇等气味的识别过程，且在不同气味中的识别过程中对于气味的运输能力有差异。

The results showed that MmedCSP1 could bind to methyl salicylate, pentane, ocimene,β-ionone, 3, 4-dimethylbenzaldehyde, 2-hexanone and cis-3-hexen-l-ol.

结果表明：MmedCSP1只能与水杨酸甲酯、戊烷、罗勒烯、β-紫罗兰酮、3，4-二甲基苯甲醛、2-己酮和叶醇结合。

The auxiliary can be recovered in high yield (81%) only by filtering and recrystallization. Besides, some other aldehydes have been chosen to test the enantioselectivity of N,N\'-dibenzyl tartamide, in comparison with two other allylaborates reagents developed previously by Roush and Brown, respectively. The results show that %e.e. of homoallylic alcohol is superior to that of the former, and approaches the Brown reagent.

产物经S_N2反应得瑞格列萘中间体-甲基烯丙基-2-氯苯基-叠氮甲烷(17)；同时，将筛选出的新型手性配体N-苄基酒石酸二酰胺用于其他几种醛(正丁醛，异戊醛和环己醛)的不对称烯丙基化反应，并与广泛应用的Roush配体(22)和Brown配体(27)相比较，发现其立体选择性优于Roush配体，并接近Brown配体，但明显具有可回收利用的优势。

If seizures supervene, the treatments of choice are benzodiazepines, gabapentin, and vigabatrin.

急性卟啉病发作时，如果出现痫性发作；可以选用苯二氮卓类药物、加巴喷丁、氨己烯酸等药物控制发作。

Various alcohols are tolerable under the present conditions including benzylic alcohols,allylic alcohols as well as simple aliphatic alcohols.

醇的范围非常广，二苯甲醇、1-苯乙醇、烯丙醇衍生物等含苄醇结构的地物能够以最高接近定量的产率得到产物。普通烷基醇如环己醇，甚至最简单的甲醇和乙醇也能顺利反应，产率中等。

Treatment of polystyrene-supported selenium ,bromide with lithium acetylides afforded polystyrene-supported selenoacetylene, which reacted with dicyclohexylborane giving a way for stereoselective synthesis of polymer-supported- vinylic selenides .

聚苯乙烯负载硒溴与炔基锂反应合成聚苯乙烯负载炔基硒醚，再与二环己基硼烷反应制得聚苯乙烯负载顺式烯基硒醚；此负载型烯基硒醚在NiCl2(PPh3)2存在下与格氏试剂发生偶联反应，提供了一种有效的-1，2-二取代乙烯的固相有机合成方法

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。