查询词典 sulfur black

The chemical deposition method was applied to prepare bismuth sulfide through reaction of bismuth salt complexed by triethanolamine or EDTA with an aqueous solution containing a sulfur sourse such as thioacetamide, thiourea, sodium thiosulphate, geseous H2S.

化学淀积方法被提出申请准备硫化铋经过被和一个水溶液的三乙醇胺或乙二胺四醋酸合成物的铋盐反作用含有硫 sourse，像是硫代乙醯胺，硫，钠 thiosulphate ， geseous H2S 。

In the original titrimetric solution, known as Karl Fischer Reagent, the sulfur dioxide and iodine are dissolved in pyridine and methanol.

在最初的滴定溶液里，已知的是卡尔费休试剂，二氧化硫和碘溶解在吡啶和甲醇中。

Principle— The titrimetric determination of water is based upon the quantitative reaction of water with an anhydrous solution of sulfur dioxide and iodine in the presence of a buffer that reacts with hydrogen ions.

原理---水分滴定测定法是基于水与二氧化硫和碘的无水溶液，在能与氢离子反应的缓冲溶液下发生的定量反应。

By using multi-dimensional nuclear magnetic resonance method we have studied the folding mechanism of staphylococcal nuclease in vitro; the tertiary interactions for folding of SNase fragments into native-like conformation; the interaction between SNase N- and C-terminal subunits; the relationship of enzyme activity with folding and dynamic states of SNase; the structural properties of enzyme protein while exert its function. We have studied the internal motions of thermophilic Archaea protein Ssh10b and mechanism of its heat-resistance using the NMR 1H-15N relaxation and H/D exchange methods. We have determined the 3D solution structure of human translationally controlled tumor protein TCTP and the Ca2+-binding site; determined the 3D crystal structure of human mitoNEET, a novel protein from distinct groups of iron-sulfur proteins; determined the 3D solution structure of a novel chromatin protein Cren7. Determination of SNase-DNA and Archaea protein-DNA complex structures are in progress.

运用异核多维核磁共振方法研究了金黄色葡萄球菌酶体外折叠机制，酶蛋白片段体外折叠成类天然溶液三维构象的三级相互作用力，酶蛋白亚基间的相互作用，酶蛋白的折叠以及内运动状态与酶活力的关系，酶蛋白发挥功能时的结构特性；运用NMR的1H-15N 驰豫和H/D交换方法研究了嗜热古菌蛋白质Ssh10b双体结构内运动特性，热稳定性机制；确定了人翻译控制的肿瘤蛋白TCTP蛋白的溶液三维结构及其钙离子的结合部位；确定了一类新的铁硫蛋白家族蛋白人线粒体膜上mitoNEET蛋白的晶体结构；确定了一个新型的染色质蛋白Cren7的溶液三维结构；正在研究金黄色葡萄球菌酶及嗜热古菌蛋白质与DNA复合体的溶液三维结构。

By comparing the catalytic behavior of S3/MAO and S8/MAO, a conclusion could be drawn that the coordination of the sulfur atom to the titanium center of the active species was essential for ethylene trimerization.

通过比较S3与S8不同的催化性能，可以认为，硫原子对钛活性中心可能存在配位，而这一配位对乙烯三聚反应起重要作用。

Tungsten\|silver\|sulfur cluster ; crystal structure ; triphenylphosphine

钨银硫簇合物；晶体结构；三苯基膦

Through Friedel-Crafts reaction, We have prepared highly purified triphenylphosphine sulfide by using benzene, phosphorus trichloride, sulfur, and aluminum trichloride, which is desulfurized with metal powder to produce triphenylphosphine.

实验方法为以苯、三氯化磷、硫和三氯化铝为原料，利用Friedel-Crafts反应，合成三苯基硫膦，收率为79.4％；然后用金属将三苯基硫膦还原制得三苯基膦，收率为80％。

The characterization of photobiological hydrogen production for four marine green algae by sulfur-deprived and treated with uncoupler after dark anaerobic incubation was investigated.

分别采用培养基中无硫连续光照和厌氧暗诱导后添加解偶联剂光照的方法，研究几株海水绿藻的光照产氢特征。

In this paper, the chemical state of element sulfur in undoped, doped ferric ion samples of two typical photographic gelatin s were studied by X-ray photoelectron spectroscopy.

本文采用X射线光电子能谱技术，研究了国内外典型的两种照相明胶的空白样品、掺杂铁的样品中硫元素的存在形态。

The nitrogen in fossil fuels is more refractory than sulfur, and microbial approaches for petroleum denitrogenation could be beneficial as the classical hydroprocessing methods are costly and unefficient.

化石燃料中所含的有机氮较有机硫更难以去除，常规的化学脱有机氮技术高压加氢法处理燃油能耗高，处理效果不理想等方面的缺陷使人们思考生物脱氮的可能性。

This was not understood at the time, and therefore went unaddressed, until ascension became so distorted that we chose to stop ascending and wait for a time when all records would be revealed.

这在当时没有被了解，因此进行着无改编，直到提升变得如此扭曲，我们选择去停止提升并等待所有记录能被揭示的那一天。

The attack＇s nuisance value is increased because mobile phone networks also send notifications of new voicemail by sms,so an attacked phone may stop advising of new voice messages too,it warned.

它警告：这种攻击的危害增长是因为移动电话网络也会通过短信发送新语音邮件的通知。所以受到攻击的手机可也以停止新的语音信息的提示。