硫

Deeply study of the applications of this type of activated alkene in the synthitic organic chemistry is very important.

因此，进一步研究α-氰基二硫缩烯酮在合成中的应用尤为重要。

High performance liquid chromatography was used to detect concentration of BP in the air of working sites and level of urinary 1-hydroxypyrene (1-OH-Py) of workers. Contents of acetylcholine in blood filtrate and activities of erythrocyte acetylcholinesterase were determined by Alky hydroxylamine chromatometry and DTNB methods, respectively.

用高效液相色谱法测定各组工作场所空气中BP的浓度，并对工人尿中1-羟基芘(1-OH-Py)的水平进行检测；分别用碱性羟胺比色法和二硫代二硝基苯甲酸法测定全血滤液中乙酰胆碱的含量和红细胞乙酰胆碱酯酶的活性。

3Nm, modified with alkylamine and alkylthiol were prepared by a simple phase-transfer method using a small Pt nanocluster stabilized by glycol and OH〓 as a building block.

四、采用"非保护型"Pt金属纳米簇作为构筑基元，通过简单的相转移方法制备了长链胺和长链硫醇修饰的Pt纳米簇。

Alkylamine reaction with dialkyl cyanodithioiminocarbonate was catalyzed by quaternary ammonium salts at room temperature to yield 3-alkylamine-5-amino-1,2,4-triazole in good quality and high yields. After imidization and reaction with an α,β-unsaturated acid derivative, the reaction intermediate was hydrolyzed in the presence of a Lewis acid to obtain the target product.

烷基胺与氰基亚胺硫代二甲酯在季氨盐催化作用下得到质量好、收率高的3-烷氨基-5-氨基-1，2，4-三氮唑，进一步经过亚胺中间体并与α，β-不饱和酸酯作用后，中间产物在Lewis酸催化作用下水解得到三唑嘧啶酮。

It was observed that the Pt 4f binding energies in the same-sized Pt nanoclusters modified with alkylamine, alkylthiol, PVP, PVA or PPh〓 increase by 0.5-0.8eV relative to those of bulk Pt.

观察到具有相同金属尺寸的Pt金属内核而外层配体分别为长链胺、长链硫醇、PVP、PVA或PPh〓的纳米簇的Pt 4f电子结合能相对于块体Pt样品升高了0.5-0.8eV。

Thiothymine has several unique properties, such as easy alkylation, ready oxidation and strong absorption in UVA region.

硫碱基有其独特的性质，比如：易烷基化，易氧化和强的紫外长波吸收。

Second, the alleviative effects of cysteine derivatives on MCD diet-induced hepatotoxicity was examined.

第二章的研究是探讨半胱胺酸衍生物对甲硫胺酸与胆碱缺乏饮食诱发之肝脏脂质代谢异常的影响。

Onion is a universal vegetable of allium sativum with high nutritional and medicinal value.

洋葱的多种含硫化合物使其具有特殊的辛辣气味。

With the fast development of world economics,people will have more request to the fiavor of food,so that allyl isothiocyanate have great market prospect.

随着世界经济的快速发展，人们对食品口味的要求也会越来越高，从而决定了异硫氰酸烯丙酯具有广阔的市场前景。

The condition of desulpfuration and the effect of purification Bayer red mud lotion with Barium aluminate were investigated.

研究了用铝酸钡净化拜耳赤泥洗液的除硫条件和效果。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。