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The high-efficiency compound flocculant-producing bacteria was acquired through separation and purification of flocculant-producing bacteria in soil, and they were authenticated systematically by using electronic microscope and DNA technology. The study shows that two are actinomycete and one is microzyme among three kinds of bacteria which have same characteristics of physiology and biochemistry.

安全、无毒、无二次污染的绿色水体净化剂———微生物絮凝剂,是环保界关注的焦点,但目前国内研制的微生物絮凝剂多由单一菌种产生,且基本上停留在小试阶段,并未取得突破性的进展,主要原因是产量较低和制取成本较高,同时也缺乏系统的鉴定(特别是从分子水平上给以说明)。

The relationship between soil microbial number and organic matter, total N, available N, and available P of soil samples, and the ecological effect of soil microbial physiological community participating nitrogen cycle in this area were also discussed.

同时讨论了土壤微生物数量与土壤有机质、全N、有效N和速效P的相关性及微生物生理群在该场区氮循环中的生态作用。

The results showed that fertilizer application increased the numbers of rhizosphere microorganisms with the exception of nitrogen-fixing bacteria.

结果表明,不同微生物类群对施肥反应不同,氮肥、有机肥处理明显增加除根际固氮菌外其他微生物类群的数量。

Breeding of nitrogen-fixing bacteria is the basis for nitrogen-fixing microbial fertilization.

固氮微生物菌种选育是固氮微生物肥料生产应用的基础。

Since batch operation of MRCRS can be applied easily and extensively in production process, a kind of non steady—state microbial reaction coupled with a complete cell recycle separation process is emphasized and analyzed. This dynamic process was characterized by which cells were retained completely by the recycle separation process without purge stream.

五 鉴于微生物反应一循环分离耦合过程的间歇操作在生产过程中极易使用,本文还分析了分离过程对细胞完全截留且没有任何洗脱流存在的非定态的微生物反应一完全细胞循环分离耦合过程的操作特性及其优化。

This paper summarizes some molecular ecological techniques used in the studies on microbial community structure of oil reservoirs in China, including 16S rRNA gene sequence in the Daqing Oilfield and the northwestward oilfields, 16S rDNA of T-RFLP in the Shengli Oilfield and DNA gene track examination technology in Jilin oilfields, and points out some questions and suggestions for future studies.

本文较系统地总结了我国利用分子微生物生态学方法研究油藏微生物群落结构的进展,其中包括大庆油田和西北部油田的16S rRNA基因序列分析,胜利油田16S rDNA的荧光标记末端多形态限制性片断分析技术,以及吉林油田应用的DNA基因跟踪检测技术,并指出了存在问题和研究方向。

By measuring the numerical of oxygen transfer coefficient in double bioreactor which in water, you can know whether the rate of oxygen transfer that is meet the oxygen consumption rate of the microbes so as to ensure that the microorganisms can grow.

通过测定摇床生物反应器的氧体积系数,就可以知道氧的传递速率是否满足微生物的耗氧速度从而确保微生物的生长。

These food must be first processed by microoganism in rumen then in reticulum and Omasum, and digested in abomasums at last. Whereas ferment secreted only by flocks and herds can't digest all food completely which maybe result in waste. If microorganism is involved in this procedure, it would help to digest the food completely and make a fully absorption by intestine and stomach.

这些食物必须经过瘤胃微生物作用后,由蜂巢胃及重瓣胃作二次作用,再次入皱胃进行消化作用,但是,牛羊本身所制造的酵素并不足以分解所有的食物,而造成浪费,这时若有微生物来帮助食物的分解,让肠胃的吸收更加快速、完全。

To find out the substitute parameters for pathogenic microorganism warning aiming at potential pathogenic microorganism pollution accidents happened in water environment,the relationships between turbidity ,particle counts and concentration,removal,recovery rate of Giardia cyst and Cryptosporidium oocyst in raw and filtered water are presented.

针对潜在的病原微生物突发性水污染事故,为寻找病原微生物预警替代性指标,重点探讨浑浊度、颗粒计数与原水、过滤水中贾第鞭毛虫孢囊和隐孢子虫卵囊浓度、回收率、去除的关系,认为浑浊度与颗粒计数可以作为水厂处理效果与饮用水受两虫污染的指示指标,并结合水厂的实际情况提出相应的控制方法和建议,指出暴雨时应特别注意两虫的爆发

The colonization in the patient oropharynx and the translocation of the pathogens in respiratory tract were important causes of VAP.

VAP病原菌以宁杆菌为主;口咽部微生物定植、气道内病原微生物易位是VAP发生的重要原因。

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