乙烯

The second peak occurs at 7 days after collecting, meanwhile the fruit star decomposing.

乙烯含量第一次高峰出现在开花坐果后27天，促进果实发育，采后7天出现第二次高峰，此时果实开始腐烂。

All specimens of chicken liver were contaminated with stilbestrol and 81.82% of them with arsenic. Duck liver, pig liver and fresh milk were detected with different levels of contaminants.

其中33份鸡肝、35份鸭肝、34份猪肝样品的铅检出率分别为72.72%，85.00%，73.53%；31份鸡肝和30份鸭肝样品的镉检出率均为100%；33份鸡肝、34份鸭肝和27份猪肝样品的砷检出率分别为93.34%，11.76%和33.33%；33份鸡肝样品中27份砷检测值超标，超标率为81.82%。70份鲜牛奶样品有4份检出速效氯霉素，检出率为5.72%。28份鸡肝、20份鸭肝样品全部检出乙烯雌酚。

In each stirrer gas was fully contacted with liquid and reached nearly phase equilibrium.

本文将乙烯精馏塔视为N个串级的搅拌槽，在每一级上汽液充分接触并达到平衡。

Both postharvest tomato fruit and strawberry fruit, the changing trend of activities of NADK was similar to respiration, the same were NADP phosphatase and ethylene production.

但无论草莓还是番茄果实，采后NAD激酶的变化均与呼吸变化趋势相似，NADP磷酸酶活性变化与乙烯变化趋势相似。

So, through influencing directly ratio of NAD to NADP , NAD kinase and NADP phosphatase may involved in regulation of respiration and ethylene production in tomato and strawberry fruit, further affect maturation, ripening and senescence of fruit.

因此，NAD激酶、NADP磷酸酶可能通过直接影响NAD和NADP的比例而参与果实呼吸作用和乙烯生成的调节从而影响其后熟衰老过程。

TFP activated NAD kinase in tomato and strawberry fruit, CPZ activated the enzyme in tomato but in strawberry fruit, which indicated that ethylene-started and promoted maturation, ripening and senescence of fruit were related not only to increase in intracellular Ca〓 concentration and CaM content, but also to NAD kinase, and indirectly showed that CaM could regulate NAD kinase in two fruit.

以上结果表明乙烯启动和加速果实成熟衰老不仅与胞内Ca〓浓度和CaM含量增加有关，而且与CaM的另一目标酶——NAD激酶有关，并间接证明CaM对两种果实NAD激酶具有调控作用。

In China,mainly act as polymerize disperse agent of chlorethene and styrol,secondly used in the fields of daily chemical,building and paint,HEC is in the stage of popularization and the consumption is about 3600 tons.

目前国内消费量约为3600吨，主要用作氯乙烯和苯乙烯的聚合分散剂，其次在日化、建材、涂料等方面应用逐渐扩大，随着我国石油、天然气开采的发展，对HEC的需求将日益增加。

The polymerization systems can be divided into four categories: styrol, acrylate, hydrophilic and non-ethylene according to the difference of the structure and characteristic of the monomer.

总结了目前各种不同组成的分散聚合体系，按单体的结构、性质的差异，分别介绍了苯乙烯类、丙烯酸酯类、亲水性单体类、非乙烯单体类的分散均聚合研究情况，列出了各种分散聚合体系中的介质、稳定剂和引发剂等组成。

X 6 x 25 mm3 tested plates were cut from samples prepared from heating the PLLA powder at 220 oC under vacuum without pressure and gradually cooled from 220 oC until room temperature in a pot vented with nitrogen for one night. The crystallinity value of resultant samples was 43 %. These tested plates were implanted in the dorsal subcutis of S.D. rat after sterilization with ethylene oxide and removed at 1 d、3 d、7 d、21 d and 35 d intervals. These specimens were examined histologically with paraffin embedding section and resin embedding grounding section by light microscopy to evaluate tissue response. Three points bending test, viscosity and thermal properties were also examined.

使用日本岛津公司重量分子量21万之聚乳酸，以220 ℃热熔法，在氮气中自220 ℃缓慢降温产生结晶度43 %的聚乳酸，并切割成2 x 6 x 25 mm3试样，经环氧乙烯灭菌后，植入在Sprague Dawley大鼠背部皮下组织，经1天、3天、7天、21天、35天五个试验期间，以石腊及树脂标本之组织学观察，评估其组织反应并以三点弯曲强度、黏度及热性质检测，评估其物理性质变化。

Laminate flooring can be installed over floors like wood, tile, vinyl or linoleum because most of them are floating which means they do not fasten directly to the subfloor.

地板可以安装在像木地板、瓷砖、乙烯基或油毡因为他们大多不佩戴浮动即直接向底板。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐