亚硫的

The influence of the arsenic concentration and the sodium lignosulphonate concentration on the growth of the thiobacillus ferrooxidans strains, as well as the rates of bacterial oxidation of arsenopyrite and pyrite were studied.

本文着重研究了氧化亚铁硫杆菌对砷黄铁矿和黄铁矿单矿物的氧化规律及其性能之差异，考察其对砷的适应能力及表面活性剂的影响。

The effects of the surfactants on bioleaching of chalcopyrite were evaluated by measuring the leaching rate of copper and the density of bacteria cells in solution.

通过对浸矿溶液中铜的浸出率以及细菌浓度的测定来评价表面活性剂对氧化亚铁嗜酸硫杆菌浸出效果的影响。

In another direction, the radical cyclization of thioimide with acylsilane produced simple cyclization product in low yield without expected enol silyl ether compound.

对於硫醯亚胺与矽基酮的自由基反应，则是得到低产率的简单环化产物，而不是预期的烯醇矽醚化合物。

Experimental results show the lag phase of Thiobacillus ferrooxidans was longer and bacterium density was decreased when 0.25% pulp density of metal sulfides or 1% element sulfur was added in 9K medium.

同时研究了多种因素对氧化亚铁硫杆菌生长活性的影响，发现在Fe〓氧化体系中添加0.25％固体物浓度的硫化矿物时，细菌的Fe〓氧化速度会降低，细菌生长停滞期延长，浸出液中细菌浓度减少。

The results show that it only takes 8 min for the reaction, when the initiator is potassium persulfate/sodium thiosulfate which forms an oxidation-reduction initiator system; N,N-methylene diacrylamide is as cross-linker; neutralization degree is 70%, under the microwave power of 360 W.

结果表明，在360W的微波辐射功率下，采用过硫酸钾与硫代硫酸钠的氧化还原引发体系，N，N-亚甲基双丙烯酰胺为交联剂，接枝单体的中和度为70%时，只需8min就可以完成纤维素基高吸水树脂的接枝共聚合成。

This process utilizing modern efficient wire gauze wave-like packings sepa-rates three isomers of MNT(ortho-.meta- or para-), then the O-MNT or P-MNTis nitrated to produce military TNT by a mixture of nitric and sulfuric acid.

本工艺利用近代高效的金属丝网波纹填料分离MNT的三种异构体，然后用硝硫混酸把邻一或对一MNT硝化成军品TNT，这样可避免亚硫酸钠溶液精制TNT的工序。

The results of bioassay suggest that 2-methylthio-6-methyl-4-substituted pyrimidine and 4, 6-dimethoxy-2-substituted pyrimidine derivatives show herbicidal activity. In these target compounds, 4, 6-dimethoxy-2-substituted pyrimidine benzylamine and 4, 6-dimethoxy-2-Substituted pyrimidine benzylidene amine exhibit good herbicidal activity, and the herbicidal will be affected by the substituents in the benzene ring.

对分子库中的目标分子进行了生物活性筛选研究，发现其中的2-甲硫基-6-甲基-4-取代嘧啶衍生物和4，6-二甲氧基-2-取代嘧啶类化合物显示出除草活性，其中4，6-二甲氧基-2-取代嘧啶苄胺类化合物和4，6-二甲氧基-2-取代嘧啶亚苄胺类化合物具有较好的除草活性，而且其活性和苯环上的取代基有关。

Photo Gallery: Plate Tectonics Sulfur, salt, and other minerals color the crater of Dallol volcano, part of the Danakil Depression in Ethiopia.

意译：板块构造的图片。硫，盐，和其他矿物颜色火山口的火山dallol ，部分的danakil盆地在埃塞俄比亚。

Chapter 1: The reactions of methylenecyclopropanes with phenylsulfenyl chloride or phenylselenyl chloride give cyclobutene derivatives along with ring-opened products in good total yields at 0 °C in various solvents. The reactions of methylenecyclopropanes with diphenyl diselenide give the di-phenylselenyl substituted ring-opening products which can be transformed to 2,5-dihydrofuran derivatives under the oxidation with hydrogen peroxide at room temperature.

在第一章中，我们发现亚甲基环丙烷类化合物在0℃时即可很快与苯硫氯或苯硒氯发生反应生成取代环丁烯类化合物和正常的开环产物；而与二苯基二硒的反应则需加热到150℃以上才能进行反应，生成的二苯硒基开环产物在双氧水氧化下可以转化为取代二氢呋喃类化合物。

Tris-(1-aziridinyl)- phosphine oxide and 2-[bis-(2-chloroethyl)-amino]-tetrahydro-1, 3, 2-oxazaphospholidine-2-oxide(Ⅲ, B-518) possess inhibitory action against a variety of animal tumours and have been used clinically. Recently, bis-(1-aziridinyl)-phosphinyl carbamic acid ethyl ester(Ⅱ, AB-100) was found to possess significant activity with low toxicity on experimental animal tumours.

双(2-氯乙基)氨基磷酰二氯与乙烯亚胺在脱水苯或对氧六环中并在三乙胺的存在下进行缩合，生成N，N-双(2-氯乙基)-N′，N-二乙烯基-磷酰胺；与双巯基或双氨基化合物作用，则生成相应的环状磷酰胺、磷酰胺酯以及磷酰胺硫代酯氮芥类化合物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。