硫

The δ〓S value of pyrite, sphelerite and arsonopyrite is in the range of 4. 0‰ and -4. 2‰ with the highest frequency occurring around zero, indicating a uniformed sulfur source. The large variation and mainly negative values (0.2‰～-11. 3‰) of δ〓S for stibnite could be interpreted by isotope fractionation. The carbon isotopic characteristics exhibit a mixing nature of magmatic carbon and organic carbon.

矿床中的热液成因黄铁矿、闪锌矿和毒砂的δ〓S＝4.0‰—-4.2‰，呈塔式分布，δ〓S集中在0附近，表明其成矿体系具有均—化硫的同位素组成，而辉锑矿的δ〓S变化范围较大(0.2‰—-11.3‰)，除一个样品外均为负值，这是硫同位素分馏作用的结果。

On the other hand, the corresponding bromohydroxylation of 1, 2-allenyl sulfides with Br〓 and water should be carried out in aqueous acete nitrile at 0℃.

在1，2-联烯基硫醚分子中由于同时存在着硫原子和具有两个相互垂直π-键的累积双烯结构，使其具有一些特殊的反应性能。

Methods Tissue culture was used to study the cataractous lenses of rats induced by sodium selenite or galactose. At the early stage, the content of nonprotein sulfhydryl, protein sulfhydryl, non-soluble disulfide bond, malonaldehyde and the activities of glutathione peroxidase, glutathione reductase and glutathione-S-transferase were measured in the cataractous lenses, and they were compared with that of the normal lenses. Results The two kinds of material could all induce cataract in rats, sodium selenite being more potent.

采用器官培养方法，以不同浓度亚硒酸钠及半乳糖作用于晶状体，诱发大鼠晶状体形成白内障，在培养初期测定晶状体内非蛋白质巯基（nonprotein sulfhydryl， NP-SH、蛋白质巯基（protein sulfhydryl ，P-SH）和不溶性蛋白质二硫键的含量，脂类过氧化水平，以及与谷胱甘肽代谢有关的谷胱甘肽过氧化物酶(GSH peroxidase， GSH-PX)、谷胱甘肽还原酶(GSH reductase， GSSG-R)及谷胱甘肽硫转移酶(GSH S transferase， GSH-S)的活性。

From May 19 to June 17, 2003, a chemical effect experiment on the Murraya paniculata Oidium. sp was conducted in the areas around the Administration Building, the Chemical Lab Building, the Pond near Teachers' Dormitory and the Libraryin the campus.

于2003年5月19日至6月17日，用70%甲基硫菌灵可湿性粉剂、75%百菌清可湿性粉剂、20%三哩酮超微可湿性粉剂和30波美度的石硫合剂在广西生态工程职业技术学院的学院办公楼前、化学实验楼前、水塘区教工宿舍周围、学院图书馆旁的九里香白粉病Oidium sp。

AbE contains a thioredoxin domain, which is normally found in thiol/disulfide oxidoreductase .

sbE含有一个硫氧化还原蛋白结构域，该结构域通常存在于催化二硫键拆合的蛋白质中（如PDI、Thioredoxin和DsbA等）。

The residues of methyl parathion had not been detected in seven days when it was used.

实验结果表明，甲基对硫磷在小白菜上半衰期为2.91天；喷药后第七天，在小白菜中未检出甲基对硫磷的残留。

A method was developed for simultaneous determination of methyl- parathion and parathion residues in vegetables by reversed-phase high performance liquid chromatography.

建立了同时测定甲基对硫磷、对硫磷在蔬菜中残留量的反相高效液相色谱分析方法。

The results showed that the half of decay time of methyl parathion in Chinese cabbage was 2.91 days.

喷药后，在第零天、第一天、第二天、第三天、第五天、第七天分别取样，用气相色谱法分析测定甲基对硫磷在小白菜上的残留量，得出甲基对硫磷残留量与时间的关系。

The optimum pH value for enzymatic hydrolysis of methyl parathion was 8. 6～8. 8, the optimum temperature was 15℃.

甲基对硫磷水解酶水解甲基对硫磷的最适pH均为8.6～8.8，最佳反应温度为15℃。

Na〓 inhibited enzyme activity strongly. The kinetic parameters of Km and kcat against methyl parathion at 25℃ was 68. 6±5. 1μmol/L and 45 ±6 S〓 respectively.

Na〓对甲基对硫磷水解酶有较强的抑制作用。25℃时该酶对甲基对硫磷的米氏常数Km为68.6±5.1μmol／L，kcat为45±6 S〓。

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。