碳酸盐

This thesis study has focused on the investigation of loss-on-ignition and Ruppia L. macrofossil for the reconstruction of the lake level and post-glacial environmental change.

研究结果显示，黄旗海湖区在全新世到来之前的气候寒冷，湖面冰封期较长，夏季温度较低，致使湖泊的有机生产率和自生碳酸盐产量比全新世低很多。

Seed, in situ dropped from the rooted aquatic plant and by the deposition of well laminated lacustrine sediments. The lake level thereafter became deeper than 4 m so that Ruppia L.

烧失量研究结果清楚显示：黄旗海从全新世早期起进入了稳定的湖泊发展阶段后有机生产率显著上升，自生碳酸盐产量同步大幅度增长。

There are two different opinions on origin of gases in Ordovician reservoir of the central gas field of Ordos basin:(1) Gases are mainly sourced from Ordovician carbonate source-rock, it is a mixed gas in which sapropelic gas dominates;(2) Gases are mainly sourced from Carboniferous coal-bearing source-rock, it is a mixed gas in which humid gas dominates.

对鄂尔多斯盆地中部气田气源问题主要有两种不同看法：一种看法认为它是以奥陶系碳酸盐烃源岩来源为主、腐泥气为主的混合气；另一种看法认为它是上古生界煤系气或煤系气为主的混合气。

And basing on the compound study of sedimentology and stratigraphy, the author divides the evolution of Cambrian North China Platform into 4 stages which have different carbonate platform types, sedimental facies sequences and sequence stratigraphic patterns. This reflects the changing law of sedimental dynamic field from unstability to stability with the time going on.

在沉积学、地层学综合研究的基础上，将寒武纪华北地台演化阶段划分出四大演化阶段，每个阶段具有不同的碳酸盐台地类型、沉积相序和层序地层模式，反映了沉积体系在沉积动力场中随着时间的演化由不稳定走向稳定的变化规律。

The characters of heterogeneity widely exist in shaly sand, carbonate and igneous reservoirs.

储集层的非均质性质普遍存在于砂泥岩储层、碳酸盐岩和火成岩储层中。

And the sedimentary environment evolved gradually from shoreland toward carbonate terrace.

表明沉积环境由滨岸向碳酸盐台坪演变。

These pieces of evidence indicate petroleum was likely oxidized by sulfate reducing bacteria and thus supplied a source of some of the carbon in the carbonate cement. Significatively, more and more research has shown that SRB could reduce U to U utilizing biological metabolism.

这些证据表明，硫酸盐还原菌可能厌氧地降解烃类，其产物CO2为碳酸盐胶结物提供了部分碳源，且已有的研究显示，SRB利用新陈代谢作用可以还原U。

However, these rigid and dense carbonates and thick-bedded sandstones are of relatively developed secondary fractures and solutional pores, which are mainly distributed in four suites of rigid rocks.

然而对于刚性致密的碳酸盐岩以及厚层块状砂岩，次生裂隙、溶隙相对发育，它们分布于四套主要的刚性岩层中，极大地改善了这些岩石的孔渗性能，使之成为良好的裂隙储集体，为海相中生界、古生界油气聚集成藏提供了有利的储集空间。

The most dramatic surface karst landforms cover an area of 40 km2, exposed limestone surfaces have been dissected by the formation of enormous karren with solution runnels, deepening of the karren and solutional opening of joint fissures has left remnant pinnacles of various shapes, which are described as stone forest.

地表石海分布面积达40余平方千米，是研究地表岩溶的绝好场所。形成地表石海的岩层是由距今约2.9亿年的海相碳酸盐沉积而成。典型的地质剖面以及地层中保存的特殊沉积构造与丰富的古生物化石，全面反映了该地区沉积环境和构造演化的历史。

The influences of temperature （frozen, refrigeration, 37 ℃, 60 ℃）, buffers （phosphate, Tris-HCl, citrate, acetate, carbonate, borate） pH （2.0-10.0）, light, and sonification （200,400,600 W） on the stability of thymopentin were observed.

方法采用RP-HPLC法，分别考察了温度（冷冻、冷藏、37℃、60℃）、缓冲液种类（磷酸盐、三羟甲基氨基甲烷-盐酸、枸橼酸盐、醋酸盐、碳酸盐、硼酸盐）、pH值（2.0～10.0）、光照及超声（200、400、600W）等因素对胸腺五肽溶液稳定性的影响。

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。