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The Co-culture experiment and slurry experiments were applied to two paddy soil samples, which from Sichuan and Jiangxi provinces. The concentration varying of Crand Fe was measured in the course of incubation to study the chromate reducing capability of microbe and effect of chromate on dissimilatory iron reduction .

采用四川和江西水稻土为供试土壤,通过接种土壤微生物的混合培养及土壤悬液培养试验,测定氧培养过程中Cr和Fe的浓度变化,研究了不同浓度铬酸盐的微生物还原能力及不同铬酸盐浓度下氧化铁的还原能力。

The result indicated that, although microorganism from paddy soil could directly reduce Cr, the reduecing rate and efficiency were limited; the higher Cr concentration was, the less reducing ability the microbial showed; the microbe from different paddy soils had different effects on Cr reducing abilities; The reducing ability of the microbe from Sichuan paddy soil was higher than that from Jiangxi paddy soil. Cr added could be rapidly reduced in paddy soil under anaerobic incubation, moreover, the process of dissimilatory iron reduction of soil could obviously promote the Cr reduction. The existent of Cr could delay the appearance of Fe; the higher Cr concentration was, the later Fe appeared. The delayed time of Fe appearance was in accordance with the ending time of Cr reduction.

结果表明,由水稻土中提取的微生物虽然能够直接还原Cr,但其还原速率和还原程度有限,且Cr浓度越高,微生物的还原能力越差;不同来源的上壤微生物对Cr的还原能力有所差异,其中四川水稻土中微生物对Cr的还原能力均大于江西水稻土;在氧培养的水稻土中,添加的Cr可以较迅速地还原,其中土壤氧化铁的微生物还原过程对Cr还原具有明显的促进作用;Cr的存在导致Fe生成的时间出现滞后,目Cr浓度越大生成Fe的滞后时间越长;Fe产生滞后的时间与Cr还原结束的时间具有一致性。

Much oxygen was evolved in the course of H〓 production. Sodium dithionate and DCMU make the system anaerobic, but H〓 production didn't increase, even decreased. By addition of sodium acetate, glucose, heteroauxing in the course of illumination and Fe, Ni in the course of algal growth, the H〓 production increases by P.

采用强还原剂、PSⅡ抑制剂虽然可使体系处于氧状态,但产氢效率并无提高,甚至下降;光照产氢过程分别外加碳源NaAc、促生长剂IAA,藻体培养过程中补充Fe和Ni的无机物均能使扁藻产氢的效率有所提高。

The results showed that the Lactobacillus acidophilus played some roles in inhibition of common pathogens of cow endometritis and adhesion to cow endometrial epithelial cell.The optimal culture temperature was 39 ℃.The strain ...

结果表明该菌最适培养温度为39℃,在偏于氧的环境下生长最佳,在培养18~20 h后收获最佳,对奶牛子宫内膜炎常见病原菌具有一定的抑制作用,并与奶牛子宫内膜上皮细胞具有一定的黏附作用。

It was confirmed experimentally that under anaerobic condition the microorganisms trend to survive on the energy sustained by endotrophic degradation of the carbon-hydrates.

提要 通过试验证实了在氧条件下,微生物倾向于利用降解体内的糖类物质提供能量维持生活。

This investigation was conducted to screen facultatively anaerobic cellulolytic bacteria separated from cow ruminal fluid for exploiting Microbial Feed Additives.

从奶牛瘤胃液中分离出具有分解纤维素能力的兼性氧细菌,用于绿色粗饲料微生物添加剂的研发。

Strain CW-02 was isolated from ground sewerage of oil field. It is facultatively anaerobic with optimal pH of 2.8 and maximum temperature at 48 ℃. The optimum NaCl concentration for its growth is 30.0 g/L. CW-03 was isolated from crude oil well of more than 4 000 m deep.

菌株CW02来自于油田联合污水处理站里的地面污水,兼性氧,能在pH为2.8的酸性培养基中生长,耐受最高矿化度为30.0g/L,最高生长温度为48℃,可利用苯环化合物为唯一碳源生长。

It bears a great potential application in both industrial aspects as the enhancement of oil recovery and bioremediation of ecosystem due to its characteristics of thermophilic, facultatively anaerobic, biodegradation of hydrocarbons and production of biosurfactans, and in scientific sectors as build of genetically engineered bacteria due to its bearing functional genes and special enzymes.

由于其具有嗜热、兼性氧,降解烃和产生表面活性剂的特性,在微生物采油、环境治理等领域中有潜在应用价值;同时,这类细菌可能具有特殊的功能基因和特种酶,对构建工程菌亦具有重要的研究价值。

It bears a great potential application in both industrial aspects as the enhancement of oil recovery and bioremediation of ecosystem due to its characteristies of thermophilic, facultatively anaerobic, biodegradation of hydrocarbons and production of biosurfactana, and in scientific sectors as build of genetically engineered bacteria due to its bearing functional genes and special enzymes.

由于其具有嗜热、兼性氧,降解烃和产生表面活性剂的特性,在微生物采油、环境治理等领域中有潜在应用价值;同时,这类细菌可能具有特殊的功能基因和特种酶,对构建工程菌亦具有重要的研究价值。

Ammonia and nitrate, ferrous ion, sulfide, various gases and organic acids are sequentially formed, corresponding to the activities of aerobic and facultatively anaerobic bacteria, sulfate-reducing bacteria, and methane-producing bacteria with the development of reduction reactions.

在还原过程中,随着好氧细菌、兼性氧细菌、硫酸还原菌和甲烷菌的活动,相继形成氨、硝酸根离子、亚铁离子、硫化物、气体物质及有机酸。

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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。