无物

In May 2006, the Seattle-based Toxic-Free Legacy Coalition tested Washington residents and found 80 percent had detectible leels of the chemical in their bloodstreams 34 years after it was banned in the United States.

在2006年5月，西雅图无毒素遗留联合会检测了华盛顿居民，发现在美国禁止DDT34年后，80％的居民血液中可检测到这种化学物。

The activity coefficients presented in Tables 4 and 5 indicate that the dipropyl ether (1)+ 2-ethoxyethanol (3) system shows positive deviations from ideal behaviour and that the 1-propyl alcohol (2)+ 2-ethoxyethanol (3) system exhibits no deviation from ideal behaviour and no additional azeotropes are present.

表4和表5所示的活度系数表明，&二丙醚+2-乙氧基乙醇&体系与理想模型表现出正偏差而&1-丙醇+2-乙氧基乙醇&体系则无偏差，并且不存在其他共沸物。

Finally, the effect of the complete recycling use of distilled effluent on ethanol fermentation was examined in order to save the cost for the treatment of waste distillage and promote cleansing production. Based on the data of 13 circulations, although the average fermentation time needed to be extended to 30~40 hours, over 12.5% ethanol was achieved, at the same time, residual reducing sugar and total sugar were maintained below 0.70% and 0.90%, which indicates that the negative effect of the completely recycling use of waste distillage was limited, and the waste distillage can be completely recycled within the fermentation system.

在此基础上，从减轻废糟液处理负荷，实现清洁生产的需要出发，进行了无种子罐条件下酒精蒸馏废液直接全循环使用的自絮凝颗粒酵母酒精连续发酵实验研究，十三次全循环运行得到的实验数据，与无废液循环的实验结果相比，虽然平均发酵时间略增至30h～40h，但发酵终点酒精浓度仍达到12.5％以上，残还原糖和残总糖分别在0.70％和0.90％以下，说明循环积累物对发酵的影响有限，废糟液直接全循环使用的工艺技术路线可行。

The process industrial synthsis of tert-dodecyl mercaptan from dodecylene and hydrogen sulfide with aluminium trichloride as catalyst was introduced, which consists of four units including the preparation of catalyst, purification of raw dodecylene, additive reaction and separation of reaction product.

介绍了以无水三氯化铝络合物为催化剂，十二烯和硫化氢直接加成法生产叔十二烷基硫醇的工业试验工艺。

The synthesis, characterization and polymerization of a new cyclic 6-(N-isopropyl acylamine ethylidene)-ε-caprolactone were reported.

研究了官能团化新型己内酯单体的合成及其与丙交酯无规共聚物的降解性能。

Perianth segments not connate into a tube, without an acicular appendage; axil of bractlets glabrous or ± hairy, but hairs not fascicular.

花被片并非合生成筒，没有一件针状的附加物；无毛的小苞片腋或者有毛的±，但是头发而不是束状。

The tumor is sessile, polypoid, or castlike and is characterized by the presence of innumerable papillary frondlike infoldings comprised of proliferations of columnar epithelial cells around the slender fibrovascular stalks that are supported by the connective tissue of the lamina propria.1 Occasionally, tumor spreads superficially along a variable length of the bile duct.

该肿瘤是无蒂、乳头样或脱落物样的，以及肿瘤表面特征性地存在无数乳头样叶状内折叠，这些乳头是由围绕纤细的以管腔的结缔组织为支撑的纤维血管茎增殖的柱状上皮细胞构成。肿瘤偶尔也会沿不同长度在胆管表面蔓延。

This one period is sexual menstruation come the green development that tide matures to genital official development period, along with the generation of ovarian development and hormone, sebaceous glands secretion increases, facial skin does not have furrow glossily, but oil is more, give birth to acne easily.

这一时期正是性月经来潮至生殖器官发育成熟的青春发育期，随卵巢的发育和激素的产生，皮脂腺分泌物增加，面部皮肤光滑无皱纹，但油脂较多，易生粉刺。

We studied their properties by IR, NMR, OPM and DSC and found that the ratio of Cu2+/DK-C11-C12 affects the mesomorphic temperature range and the results show that chelating units can play a mesogen function.c Synthesis and mesomorphic properties study of Cu-coordinating liquid crystalline polysilsesquioxanes with heptyl group on the side chain.

2对以β-二酮为侧链的梯形无规聚硅氧烷铜络合物用IR，NMR进行了结构表征，用DSC，偏光显微镜等方法进行了液晶性能的表征，并与同类化合物的性能进行了比较和研究，结果表明：Cu~(2+)含量对液晶相温度区间有明显的影响。

By adopting the method of stepwise synthesis, this paper synthetizes 1,3 - diaminopropanein 2-Hydroxy-3-methoxybenzaldehyde Zn-Sm heteronuclear bimetallic in Anhydrous methanol solution.

6楼本文采用分步合成的方法，在无水甲醇溶液中合成了1，3-丙二胺缩邻香兰素Zn-Sm异核双金属配合物。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。