生物气

Since C6 and higher alcohols are not obtainable by a direct biochemical route, it is proposed to synthesize these using known chemical reactions, wherein the raw material for synthesis is biogas and lower C2-C5 alcohols obtained by the inventive method wherein the amino acids leucine, isoleucine, and valine, or a mixture thereof, optionally obtained from yeast autolysate, is used as a biocatalyst at the stage of fermentation.

因为C6和更高级醇类不能通过直接生物化学途径制得，所以提出用已知的化学反应合成这些化合物，其中合成的原料为本发明方法制得的生物气和C2-C5醇类，其中任选从酵母自溶作用得到的亮氨酸、异亮氨酸和缬氨酸或其混合物的氨基酸在发酵阶段用作生物催化剂。

Although the level of exploration and development of biogenetic gas is relatively low in China at present, it is an important alternative source of gas reserves in the future.

虽然目前我国生物气的勘探开发程度较低，但它却是未来天然气勘探的重要接替领域。

Biogenetic gas;origin of hydrogen;biochemical action;hydrogenase;isotopic composition

生物气；氢的来源；生物化学作用；氢化酶；同位素组成

The results indicated that the highest NAIs concentration was distributed 5 cm far in front of the mask, and the NAIs concentration was decayed with the distance to the ionizer. The NAIs concentration also decayed on the mask surface due to electric neutralization.

首先探讨空气负离子在呼吸范围中的分布状况以及对四种生物气胶的控制效率分布，进而比较四种生物气胶控制效率的差异，最后探讨空气负离子稳定度对生物气胶控制效率的影响。

Qaidam basin is located in north of Qinghai province, and it is a large Mesozoicand Cenozoic oleaginous basin ,the total acreage is about 12×104km2. Sanhu regionin east of Qaidam basin is explored and founded the Quaternary biogas, the thicknessof Quaternary strata is 3200m;the diagenesis is in low degree, high porosity and highpermeability;the sand and mud are interbeddings, sand is reservior and mud is gassource rock and cover rock;stock size of Quaternary biogas achieve 12476×108m3 ,the explored geological reserve is 1472×108m3, the third class reserve is about 3500×108m3. It is the region where founded the largest scale of biogas in the world.

柴达木盆地地处青海省西北部，是我国西部一个大型中新生代陆相含油气盆地，总面积约12×104km2，柴达木盆地东部的三湖地区主要勘探第四系生物气藏，第四系地层厚3200m；地层成岩程度低，高孔高渗；第四系砂、泥岩互层，其中砂岩为储集层，泥岩为气源岩和盖层；第四系生物气资源量达12476×108m3，已探明地质储量1472×108m3，三级储量约3500×108m3，是目前世界上第四系发现生物气规模最大的地区。

Overmature gas in carbonate rock, biogenic gas, gas generated with coal evolution and gas evolved crude oil generation The geologic conditions for their occurences are analysed briefly, furthermore some problems related to the gas potential and its exploration are discussed in this paper.

本文初步划分了我国油田气，煤成气，碳酸盐岩过成熟气及浅层生物气四类主要气源，并简要分析了其赋存的地质条件，进而对天然气资源及勘探方向，进行了一些探讨。

In c oal bed gas exploration and development in recent years,the gas source of the c oal bed methane is mainly considered from the viewpoint of thermogenic gas,however,whether the secondary biogas can be generated through the degradation of c oal by anaerobic bacteria is always a problem concerned by the people.

近年的煤层气勘探开发工作中，主要从热成气角度考虑煤层甲烷的气源，而煤能否被厌氧菌降解生成次生生物气则一直是人们所关心的问题。

On the basis of analyzing the geochemical indicators of the biogases of coal-bed gas type found at home and abroad and analyzing the geological conditions of forming these biagases,in comparison with the geological conditions and oil and gas distribution in Langgu Sag and in combination with microbial analogic experimental data,it is proposed that the types of the shallow gas in Langgu Sag should be biogenic transform gas and telogenetic biogas.

文章在对国内、外煤层气型生物气的地化分析数据和形成的地质条件分析的基础上，与廊固凹陷地质条件和油气分布状况相对比，结合微生物模拟实验数据，提出廊固凹陷的浅层天然气类型为生物改造气和后期式生物气，并初步阐明了其形成机制。

Because of the special origin of biogenic gas, the evaluation of its source rocks is different from conventional hydrocarbon source rocks.

生物气成因的特殊性，使得对生物气源岩的评价也有异于常规烃源岩。

To improve biogas production of corn stalk, biological and chemical pretreatment methods were suggested.

为了实现玉米秸秆的高效能源化转化，提出了通过生物与化学预处理提高厌氧消化效率和生物气产量的新方法。

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。