查询词典 sulfide

This kind of defects can be eliminated by controlling S content, avoiding eutectic sulfide, improving sulfide distribution and meliorating quenching process to minish quenching stress.

可以通过控制硫的含量、避免产生共晶硫化物，改善其分布状态，改善淬火工艺以减小淬火应力来消除。

By investigating the performances and chemical stabilities of three anode catalysts, namely, Pt, MoS2 and composite metal sulfide (MoS2/NiS) in the condition of electrochemical oxidation of hydrogen sulfide, it is indicated that MoS2 and MoS2+NiS exhibit better catalytic activity than Pt, and that, at a temperature more than 450℃, MoS2 itself sublimes, while the composite catalyst MoS2/NiS containing both Mo and transition metal Ni remains stable.

考察了3种阳极催化剂Pt、MoS2及复合金属硫化物(MoS2/NiS)电化学氧化硫化氢的性能和在硫化氢环境下的化学稳定性，发现MoS2和复合MoS2/NiS催化剂比Pt具有更好的催化活性，但MoS2在温度超过450℃时会升华，而含有Mo和过渡金属Ni的复合MoS2/NiS催化剂在操作条件下很稳定。

In range of 300℃～900℃, all the transition metal oxide catalysts could get high ammonia conversion, during the initial stages of the reaction, the SO〓 conversion is relatively low since the catalysts have not been sulfureted, but it increases gradually and attain constant with rising temperature and time continuance,〓 is better than other catalysts in reactivity and elemental sulfur selectivity; XRD indicates that, in the SO〓-SCR process, stable transition metal sulfide is generated which is very important to SO〓 reduction and transition metal sulfide probably is the active phase of catalyst, further the reduction of SO〓 by H〓 to H〓S is the limiting step of all process, then the activity is somewhat related to its lattice oxygen yet not so notable; XPS indicates that little sulfur on surface exists as S〓 in sulfate, showing that TiO〓 could restrain the generation of sulfate.

对于过渡金属氧化物催化剂的研究发现，在300℃～900℃范围内，不同的催化剂均可获得很高的NH〓转化率，反应初期由于催化剂还未硫化，所以SO〓的转化率较低，随着温度升高和反应时间的延续，SO〓的转化率逐渐升高并达到了稳定值；七种过渡金属氧化物中，以〓对于NH〓还原SO〓反应的活性和选择性最好；XRD结果表明在NH〓-SO〓反应后生成了稳定的硫化物相，硫化物对SO〓的还原过程具有重要作用，催化剂的活性相可能是过渡金属硫化物，而且在硫化物催化剂上进行的H〓还原SO〓生成H〓S的反应是整个过程的速率控制步骤，所以催化剂的活性与其自身的晶格氧的氧化还原能力有一定的联系，但关系不明显；XPS结果表明催化剂表面的硫大部分以过渡金属硫化物的形式存在，只生成少量的S〓，说明TiO〓催化剂能够较好的抑制硫酸盐的生成。

By the bio-assay directed fractionation of the volative constituents.dimethyl disulfide,allyl methyl trisulfide,allyl methyl sulfide and diallyl disulfide were found to increase the beating rate and beating amplitude in a standard medium,but the compund 2-pentanone without sulfide did not affect either of them.

从具有生物活性的挥发性提取物中分离得到的二甲基二硫、烯丙基甲基三硫、烯丙基甲基硫醚和二烯丙基二硫对培养心肌细胞心率和振幅均有不同程度的增强作用，而不含硫的2-戊酮则没有作用。

On the basis of investigating the developments of inorganic mesoporous material's syntheses and applications, mesostructured tin oxide, bismuth oxychloride, lead sulfide, bismuth sulfide, titanium phosphate and zinc phosphate were synthesized by Sol-Gel and hydrothermal techniques, employing the neutral surfactant organic amine and anion surfactant alkyl sulfonate as templates.

在对无机介孔材料的合成、应用等方面的发展现状进行了充分调研的基础上，本文运用溶胶一凝胶法、水热法等合成手段，选用中性表面活性剂有机伯胺和阴离子表面活性剂烷基磺酸盐为模板，制备了二氧化锡、氯氧化铋、硫化铅、硫化铋、磷酸钛、磷酸锌等无机介孔材料。

On the basis of investigating the developments of inorganic mesoporous material's syntheses and applications, mesostructured tin oxide, bismuth oxychloride, lead sulfide, bismuth sulfide, titanium phosphate and zinc phosphate were synthesized by Sol-Gel and hydrothermal techniques, employing the neutral surfactant organic amine and anion surfactant alkyl sulfonate as templates.

中文题名非硅基介孔材料的合成与表征副题名外文题名论文作者周书喜导师李健民学科专业物理化学研究领域\研究方向学位级别博士学位授予单位中国科学技术大学学位授予日期2003 论文页码总数92页关键词介孔材料介孔分子筛馆藏号BSLW /2003 /O643.3 /50 在对无机介孔材料的合成、应用等方面的发展现状进行了充分调研的基础上，本文运用溶胶一凝胶法、水热法等合成手段，选用中性表面活性剂有机伯胺和阴离子表面活性剂烷基磺酸盐为模板，制备了二氧化锡、氯氧化铋、硫化铅、硫化铋、磷酸钛、磷酸锌等无机介孔材料。

The copper-bearing sulfide horizon of the Qinglongtan deposit underwent not only intense structural reformation but also superimposition of skarn-type mineralization after the formation of massive sulfide ores.

文章综述了柴北缘地区的VHMS型Cu-S矿床－青龙滩式矿床，指出其容矿岩石为加里东造山带中被改造过的岛弧火山岩，该矿床中含铜硫化物矿层形成后不但遭受过构造的强烈改造，而且也受后期矽卡岩化的改造和叠加。

Determination ; sulphur content ; dye bath ; sulfide ion ; electrode ; sulfion-selective electrode ; sulfide-antioxidation-buffer ; potentiometric titration

测定；硫分；染浴；硫离子；电极；硫离子选择电极；硫化物抗氧缓冲剂；电位滴定法

Concentrations of platinum group elements of ores and related rocks from Baimazhai Ni-Cu sulfide deposit were determined by using an ICP-MS with nickel sulfide fire assay pre-concentration.

采用镍硫火试金ICP-MS法分析了白马寨铜镍硫化物矿床矿石及其主要围岩铂族元素含量，结果表明铂族元素总量普遍较低，且ΣPGE由矿床核部的块状矿石(78.15×10-9~555.92×10-9)向外围矿化橄榄岩(6.77×10-9~70.95×10-9)至辉长岩(3.02×10-9)逐步降低。

High percentages of ammonia or hydrogen sulfide are oxidized on the first half of the column. The oxidation of high amounts of hydrogen sulfide would involve some environmental stress on nitrifying bacterial growth and activity.2002 Elsevier Science Ltd. All rights reserved.

高百分比的氨或硫化氢在第有个柱的一半上被氧化，大量的硫化氢的氧化作用会使硝化细菌的繁殖和活性更加适应环境的压力。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。