甲烷

Psychrophilic methanogens play a very important role in global carbon cycle,and attract more and more research interests.

嗜冷产甲烷菌对于自然界的碳素循环具有非常重要的意义，近年来引起了国内外学者的广泛关注。

In this paper,the research progress on psychrophilic methanogens was reviewed,with the focus on thei...

本文针对研究者广泛关注的热点问题，从分离培养及生理生化特性、适冷机制和分子生物学研究几个方面，对嗜冷产甲烷菌的研究进展进行了全面的综述，并对其在低温厌氧生物处理技术中的应用前景进行了分析和展望。

In this paper, the research progress on psychrophilic methanogens was reviewed, with the focus on their culture, isolation, physiological and biochemical characters, molecular biological characters, and cold -adapted mechanisms. The application prospects of psychrophilic methanogens in low-temperature anaerobic technology were also analyzed.

本文针对研究者广泛关注的热点问题，从分离培养及生理生化特性、适冷机制和分子生物学研究几个方面，对嗜冷产甲烷菌的研究进展进行了全而的综述，并对其在低温厌氧生物处理技术中的应用前景进行了分析和展望。

The application of psychrophilic methanogens in anaerobic bio-treatment process could essentially break through the bottle-neck of anaerobic technology at lower temperature,greatly extend the application fields of anaerobic technology,and reduce the operational cost of wastewater treatment.

利用嗜冷产甲烷菌实现低温厌氧生物处理过程，可从本质上突破低温厌氧工艺的技术瓶颈，进而大大拓展厌氧生物处理技术的应用范围并降低废水处理的成本。

The application of psychrophilic methanogens in anaerobic biotreatment process could essentially break through the bottle-neck of anaerobic technology at lower temperature, greatly extend the application fields of anaerobic technology, and reduce the operational cost of wastewater treatment.

利用嗜冷产甲烷菌实现低温厌氧生物处理过程，可从本质上突破低温厌氧工艺的技术瓶颈，进而大大拓展厌氧生物处理技术的应用范围并降低废水处理的成本。

Psychrophilic methanogens ; low-temperature anaerobic bio-treatment ; cold-adapted mechanism ; molecular biological technology

嗜冷产甲烷菌；低温厌氧生物处理；适冷机制；分子生物学技术

Feasibility of tricocyst test with Tetrahymena pyriformis were evaluated by several chemicals (Cu2+, MMC, CP),and the effects on tricocyst by the organic compounds in the pond water with Cl2 were monitored .

然而近几年对加氯消毒饮用水的研究发现，氯能与水体中的微量有机物反应生成具有致突变作用的物质，如Symons[1]等人对美国80个主要城市氯消毒饮水的调查中发现普遍存在较高浓度的三卤甲烷。

In this paper, 4-4-(trifluoromethoxy benzoyl cyclohexyl-3, 5-diaminobenzoate with a large branch chain, pyromellitic dianhydride and 4-(4-aminobenzyl) benzenamine were used to synthesize polyimides. The effect of monomer charge order on pretilt angle was investigated for the first time when PIs were used as LC alignment layer, and the effect of diamine mole ratio on pretilt angle was studied. The thermal stability of the pretilt angle was discussed.

文章用均苯四酸二酐、4，4'-二胺基二苯甲烷和具有较大支链的4-（4-苯甲酰基）环己基－3，5-二胺基苯甲酸酯等单体制备聚酰亚胺，首次研究了单体加料顺序对液晶预倾角的影响，同时也研究了二胺配比对液晶预倾角的影响问题，并探讨了预倾角的热稳定性等问题。

With 1.3 billion cows belching almost constantly around the world (100 million in the United States alone), it's no surprise that methane released by livestock is one of the chief global sources of the gas, according to the U.S. Environmental Protection Agency … 'It's part of their normal digestion process,' says Tom Wirth of the EPA. 'When they chew their cud, they regurgitate some food to rechew it, and all this gas comes out.

科学世界」在2002年1月21日如此报导：「据美国环境保护局表示：全世界有13亿头牛几乎不断地在打嗝，而牲畜释放的甲烷是全球温室气体的主要来源之一，这没什麼奇怪的…环境保护局Tom Wirth表示：『那是它们的正常消化过程；当它们反刍时，吐出一些食物，再咀嚼它，同时排出所有气体。

In addition, dichloromethane-methanol-acetic acid (60: 30: 10, V/V) is selected as regenerant and the appropriate regeneration condition is also established by evaluation of the regeneration effciency.

此外，通过对再生效率的考察，寻找到二氯甲烷—甲醇—乙酸（60：30：10，V/V）为再生剂及合适的再生条件。

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。