查询词典 hydrogen sulfide

A Lower concentrationof sodium sulfide associatedwith the complex enzyme was studied for reducing the amount of sulfide in the paint unhairing of yak hide .

采用碱酶(一种碱性蛋白酶、碱性脂肪酶和糖化酶的复合酶)结合脱毛法，目的是降低牦牛皮脱毛工序中硫化钠的用量。

In oxygen deficient high temperiture combustion, the amount of volatic material evolved influene the conversion of sulfur in coal, high volatile content restrains the oxidation of pyrite and iron sulfide , which causes compavatively large amount of iron sulfide left in char. At the condition of air coefficient α=0.4, the sulfur conversion is up to 87% for SHONGZHAO anthracite coal, 72% for FORGCHANG bituminous coal, and the conversion is compeleted within 0.5 see.

在高温贫氧状态下燃烧，煤中硫的释出率高于煤的燃烧率，高挥发份将抑制黄铁矿的氧化释放出来，即影响煤中硫的释出率，在过量空气系数为40％时，松澡无烟煤能达到87％的硫的释出率，丰城烟煤达到72％的硫的释出率。

When the influent pH was controlled between 7.5 and 8.0, the maximum sulfide and nitrate removal loading rate were 2.96 kg·(m3·d)-1 and 0.47 kg·(m3·d)-1, respectively.The basifying reaction and remnant sulfide led to increasing pH values that were finally beyond the bacteria toleration and caused process instability at high loading rates.

控制进水pH在7.5～8.0之间，反应器的最大容积硫化物和硝酸盐去除速率分别为2.96 kg·(m3·d)-1和0.47 kg·(m3·d)-1（分别以硫元素、氮元素计），反应过程产碱及残留硫化物，均会导致反应液pH值过高（9.11±0.38），引发高负荷时工艺失稳。

Coordination polymers of dimethyl sulfide: Using P2S5 as deoxygenating agents, three coordination polymers containing dimethyl sulfide, [4(CH3SCH3)3]n (34) and n X = Cl(35, Br(36) have been successfully synthesized.

硫醚类化合物本文首次利用P2S5作为有机物的脱氧剂，在溶剂热条件下，成功地合成3种亚铜甲硫醚配位聚合物[4(CH3SCH3)3]n (34)和n X = Cl(35， Br(36)。

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。

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。

Angle of attack measuring has very important meaning.

测量攻角具有十分重要的意义。

Adjust the brightness of the display screen, the brightness should be 3—4 times as bright as the room; then adjust the clair-obscure, the characters on the salt screen should be 5—10 times brighter than grounding.

调整显示器的明亮度，为整个房间照明的3—4倍；接著调整明亮对比，萤光屏上的字应比底色亮上5—10倍。