细菌的

The chemical speciation of elemental sulfur impacted by various SOB was very poorly investigated, further research may provide theoretical support to the elucidation of sulfur metabolism of acidophilic SOB.

有关嗜酸硫氧化细菌作用下硫的形态研究十分缺乏，进一步开展嗜酸硫氧化细菌作用下元素硫化学形态的研究可以为这类细菌的硫氧化机制及对硫化矿的浸出机理的阐明提供理论依据。

In the years of ninetieth, it came to another height after using of novel techniques. In this paper, the formation and development of dental ecofilm, especially the phenomena and mechanism of ecofilm formation, which are the centers of the problem, are concise1 reviewed.

本篇主要介绍牙面生态膜的形成与发育，其核心是细菌的黏附现象，着重介绍了过去对细菌黏附现象中黏附的机理，唾液、糖和细菌本身在黏附活动中的作用。

This special anti-bacterial ingredients contain anti-bacterial water closet flanges inorganic ions can adsorption in bacteria, the bacteria destroy the inherent components, and in light of the role, with a capacity of oxide ion radicals and reactive oxygen, the bacteria destroy good results.

这种抗菌坐厕盖板含有特殊抗菌成分无机离子，能吸附在细菌上，破坏细菌的固有成分，并在光的作用下，产生具氧化能力的自由基和活性氧离子，杀灭细菌的效果好。

To obtain a better understanding of the microbiota inhabiting the intestinal tract of wood-feeding lower termites, the European subterranean termite, Reticulitermes santonensis (Isoptera: Rhinotermitidae), was used as a model system.

为了对木食性白蚁肠道共生微生物有一个全面的了解，以揭示白蚁肠道共生微生物在木质纤维素消化中的作用，本论文在国际上首次报道了应用分子克隆，DNA指纹分析，及荧光原位杂交等多种先进的分子生物学技术，以散白蚁Reticulitermes santonensis为模式系统研究低等木食性白蚁肠道内不同微生态环境中细菌的区系结构及多样化和主要细菌类群在该白蚁肠道的分布与定位等问题，并研究了与散白蚁Reticulitermes flavipes肠道共生鞭毛虫P.vertens相关的共生细菌的系统发育类型。

Fluorescence in situ hybridization with 16S rRNA-targeted oligonucleotide probes was applied for analyzing the community of iron bacteria in wastewater from the Shengli Oil Field. Four 16S rRNA probes were designed, which were highly specific to iron bacteria Leptothrix, Sphaerotilus, Leptospirillum ferrooxidans, Leptospirillum ferriphilum and Acidithiobacillus spp.

根据油田外排水中常见铁细菌的16SrRNA特异性保守序列，设计和合成了4种荧光探针，利用荧光原位杂交方法，分别利用它们对胜利油田孤岛采油厂、胜利采油厂1号和2号综合处理站外排水中存在的铁细菌的种类和数量进行检测，分析了各外排水中铁细菌的群落结构。

The central theme of this thesis is to investigate the expression of lymphocyte surface marker and concentration of serum cytokines in four groups of patients with sepsis : Group 1, patients with Gram positive bacterial infection; Group 2, patients with Gram negative bacterial infection; Group 3, patients with negative cultures but strong evidence of infection; Group 4, patients without clinical and microbiologic evidence of infection as control group.

本研究主要以临床诊断为主再配合血液培养将病人分为四组：第一组是有革兰氏阳性细菌感染的病人；第二组是有革兰氏阴性细菌感染的病人；第三组是没有培养出细菌的感染性病人；第四组是由临床诊断及微生物培养证实为正常对照组。利用单株抗体接上萤光物质再配合流式细胞分析仪来测定淋巴球上各种细胞膜表面分化抗原的变化及利用酵素免疫分析法来探讨血清各种细胞素之变化。

Na-alginate was selected as an entrapping agent to immobilize ammonia-oxidizing bacteria in this experiment, designed to explore optimal entrapping condition and to compare immobilized bacteria with non-immobilized bacteria in ammonium removal efficiency.

以海藻酸钠作为氨氧化细菌的包埋固定载体，以固定化氨氧化细菌对氨氮的去除率为主要指标，研究氨氧化细菌的最佳包埋条件，并比较了未固定细胞与固定化细胞两种处理对水中氨氮去除效果的影响。

Nitrogenase activity of nitrogen-fixing bacteria was measured by acetylene reduction assay combined with gas chromatography.

运用乙炔还原法测定了固氮细菌的固氮酶活性，通过测定菌落周围产生的透明圈和混浊圈大小对磷细菌的溶磷活性进行比较，采用火焰分光光度计测定了钾细菌的解钾活性。

In addition, the structure of the iron bacterial community was different among the three wastewater stations although the biodiversity of the iron bacteria was similar.

利用4种探针的各种组合对外排水中铁细菌的检测表明，单探针能够很好地分析外排水中铁细菌的群落结构，而组合探针能快速、较准确地检测外排水中铁细菌的数量，比传统的绝迹稀释法具有快速、准确、直观等优点。

The effects of pH value, redox potential, ferrous ions, total iron and uranium concentration were examine...

结果表明，在沥青铀矿石的细菌浸出中，细菌的作用以间接作用为主，即细菌把还原态的硫或单质硫及Fe2+氧化成Fe2(SO4)3。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。