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The accession number of this gene is EU590683. The sequence of this gene was arranged and analyzed with Mega software package having a phylogenetic tree built up in DNADist and Neighbor.

此外,采用Bioedit和Mega2软件构建了Fe-酶的NJ系统进化树,结果表明该Fe-酶基因与产气荚膜梭菌聚为一类。

The dechroming mechanism of organic acid from chrome shavings was studied from the following aspects,the depolymerization of complex compound,the replacement of H+ and the replacement of organic acid radical anion.

从络合物解聚、离子取代和有机酸根阴离子取代3个方面,探讨了有机酸的脱铬机理,认为离子的取代和有机酸阴离子的取代起主要作用。

In this paper, use the method of the orthogonal experiment study urea and potassium hydrate pulping of bagasse technical parameters,and then through two single factor optimize experiments,at last get the optimal technical parameters for the urea and potassium hydrate pulping of bagasse: urea charge 13%, potassium hydrate charge 5%, sulphidity 6%,liquor ratio 1 : 4,maximum temperature is 150℃,time at maximum temperature is 45min.

本论文用正交实验方法研究了碳酰胺和氧化钾蒸煮蔗渣的工艺条件,然后通过两次单因素优化实验,最终得到了碳酰胺和氧化钾蒸煮蔗渣的最佳工艺条件:尿素用量13%,氧化钾用量5%,硫化钾用量为6%,液比1:4,最高温度150℃,保温时间45min。

The results show that WO_3 can be nitrided in the mixture gas of hydrogen and nitrogen, and ...

结果表明,WO3可以在氮混合气中被还原氮化;氮化反应分两段进行;在氮体积比(4~5)∶1,反应温度650℃的条件下,WO3可以被还原为产物W2N;在不同氮比的混合气中氮化,WO3会生成不同的中间产物WO2和WOXNY,中间产物WOXNY进一步氮化生成W2N要比WO2容易;助剂Ni的加入使氮化反应温度降低了100℃;载体γ-Al2O3的加入使金属氧化物的氮化过程变为一步氮化还原反应。

The result shows that the elimination reaction and ring closing reaction are synergistic, and the hydrogen in the elimination reaction derives from hydroxyl. In addition, the activation energy of the reaction is 139.2kJ/mol.

计算结果表明,该反应中的消除反应和成环反应是协同进行的,溴化消除反应中的来自与O(22)相连的羟基,反应的活化势垒为139.2kJ/mol,反应放热25.1kJ/mol。

According to a report in Battery Bimonthly, there is an annual market demand of 40,000—50,000 tons of hydrogen storage alloy powder in the world, and the annual demand of hydrogen storage alloy for common Ni-MH chemical battery in China is around 8,000 tons, however the annual output is less than 5,000 tons. At present, demands of hydrogen alloys for Ni-MH chemical batteries are increasing by over 30% in each year and there is still a big vacuum in the market.

据《电池快讯》报道:全世界每年约需贮合金粉40000—50000吨,我国普通镍电池用贮合金每年需求量约8000吨,国内实际年产量不足5000吨,镍电池用贮合金目前国内需求量每年以30%以上的速度递增,市场需求缺口很大。

At present, Mg base hydrogen storage materials is the hot spot in the field of hydrogen materials researching.

镁基储材料是目前该研究领域中的研究热点,镁基储合金研究较多,镁基储复合材料是研究的新点。

After dryness, silica powder is put into chlorinated furnace in fluid bed and reacts with dried hydrogen chloride gas in the environment of 340℃ to form crude trichlorosilane. The crude trichlorosilane , through hydroscrubber and pipe bundle condenser to extract silicon tetrachloride in distillation column produces trichlorosilane gas out of the d istillation column , which can be made into the finished product of trichlorosilane by condensation .

硅粉经干燥后加入氯化沸腾炉,与通入炉中的干燥氯化气体在340o C进行反应,生成的粗三氯硅经湿法除尘器、列管冷凝器去蒸馏塔分离匹氯化硅,由蒸馏塔出来的三氯硅气体经冷凝,制得三氯硅成品。

For the purpose to study its critical issues for fusion application, many kinds of V-W-Cr-Ti-Al alloys were developed, and were used for studies of recovery and recrystallization, aging behavior and precipitation hardening, high-temperature mechanical performance, effects of H on mechanical properties and hydrogen enbrittlement, H release behavior and oxidation behavior at elevated temperature. Mechanizms for the behaviors were analyzed and the relationship between chemical composition, microstructure and properties was established.

为研究其聚变应用关键问题,本项目研制了多种V-W-Cr-Ti-Al合金,利用它们完成了合金的回复和再结晶、时效行为和析出强化、高温力学性能、对合金力学性能的影响及脆、释放行为、高温氧化行为等研究,分析了合金的行为机理,建立起了合金性能与化学成份、微观组织结构的关系,是以后研制更高性能合金的基础。

This article analyzed characteristics and development trend of FCC gasoline in China, introduced the characters and plant effects of OCT-M and FRS FCC gasoline selective hydrodesulfurization process, especially the commercial application effect of the production of States Ⅲ and Ⅳ regulation gasoline. The commercial test results showed that OCT-M and FRS process were mature and credible, and had the characteristics of low pressure, low investment, convenient operation, low H2 consumption and high liquid yield. OCT-M and FRS process could offer refineries optional economical and flexible measure to produce States Ⅲ and Ⅳ regulation clean gasoline.

分析了我国FCC汽油的特点及发展趋势,介绍了OCT-M和FRS FCC汽油选择性加脱硫技术特点及中试效果,着重介绍了OCT-M和FRS FCC汽油选择性加脱硫技术生产国Ⅲ、国Ⅳ汽油的的工业应用效果,标定结果标明,OCT-M和FRS技术成熟可靠,具有装置压力等级低、投资省、操作方便、耗低、汽油产品收率高等特点,是我国炼厂生产国Ⅲ、国Ⅳ清洁汽油时可供选择的经济、灵活的解决方案。

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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。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。