三峡坝区强降水过程6～12小时综合预报方法

为了满足长江三峡水利枢纽施工需要,开展了三峡坝区降水预报研究。在对三峡坝区强降水过程进行仔细分析的基础上,得出了有关统计规律,应用日本数值降水预报产品、卫星云图、雷达回波资料及天气学经验,逐步形成了一套６￣１２小时强降水过程综合预报方法。１９９９年试用表明,该方法对三峡坝区的强降水过程预报具有一定的实用性。     

东濮凹陷胡十二块剩余油分布特征及挖潜对策

剩余油分布特征是油田开发地质工作需要解决的主要问题之一，本文应用动态分析法半定量地描述了东濮凹陷西斜坡带主力区块胡十二块小层剩余区油分布状态，对该块剩余油在油藏平面，层间和层内的分布特征进行了详细研究，并针对4种剩余油分布类型提出相应挖潜技术对策，为高含水后期油田挖潜提供了必要依据。     

12 HOUR PRECIPITATION FORECASTS FOR NAIROBI,KENYA

Radiosonde profiles of temperature and dewpoint temperature from one station are used to forecast 12-h precipita-tion over Nairobi,Kenya.The forecast scheme is based on statistical regression modelling.Four predictors are derivedfrom data to use in a prognostic equation to get 12-h precipitation forecast.Observed and predicted rainfall values areplotted on a graph against time.Forecast verification shows that the forecasts are positively correlated withobservations.     

Wachstum gentechnisch veränderter E. coli K—12-Zellen in Klärschlamm aus zwei Kläranlagen Growth of Genetically Modified E. coli K - 12 Cells in Sewage Sludge of Two Different Sewage Treatment Plants

The release of genetically engineered microorganisms may occur from research laboratories of production plants. The most important pathway of release is via the sewage system and the sewage treatment plants into surface waters. The growth of these organisms might represent a risk to the environment. Therefore the growth of a genetically engineered strain of E. coli K-12 was investigated. Aqueous supernatant from sewage sludge of two domestic sewage plants was used as medium. This medium was treated with sterile filtration and amended with nutrients. The test strain E. coli K-12 W3110i^qM15Nal^r(pBR322) did not show permanent growth under the conditions employed. The result is interpreted by the presence of bacteriophages and the poor nutritional conditions in the medium.     

Geochemische und 13C/12C-isotopenchemische Untersuchung zur Herkunft der Kohlensäure in mineralhaltigen Wässern Nordhessens (Deutschland)

Geochemical and ¹³C/¹²C-isotopical Investigation of Mineral Waters in Northern Hessia (Germany) and the Origin of their CO₂ Content The dissolved carbonate originates from three sources: 1. biogenetic soil-CO₂, 2. volcanic CO₂ related to the evaporites of the Zechstein formation, and 3. carbonate derived from the dissolution of limestones and dolomites. Miocenic basaltic melts penetrated the evaporites of the Zechstein, and the related CO₂ was trapped in the intra- and intergranulars of the salt minerals. Circulating meteoric waters dissolve the salt minerals releasing CO₂ gas. Thus, the occurrence of basalt is related to the CO₂ contents of the evaporites, and the dissolution of only small amounts of salts rich in CO₂ may result in a high concentration of carbonic acid. In waters rich in carbonate, where volcanic CO₂ dominates over the other two sources of carbon, a δ¹³C-value of “salt-CO₂” of about –1‰ (PDB) is obtained. Water with less dissolved carbonate species have smaller quantities of salt-CO₂ down to about 20%.     

钱家营矿12-1煤层赋存特征

研究煤 层 结构 、构造 、顶 、底 板 岩性 变 化 ,掌 握 采 区 煤层 煤 质 的 变化 规 律 ,对 今 后 各煤 层 之 间 的 配 采 ,以 及 做好地 质工 作 的超 前预 测 ,具有 积 极重 要的 意 义。 本文 结 合生 产实 践 ,对12_1煤层 作了 研 究。     

基于线粒体12S rRNA序列探讨4种青蟹系统发育关系及中国沿海青蟹的分类地位

研究青蟹属4种青蟹的系统发育关系,阐明分布于中国沿海青蟹的分类地位,本研究采集了青蟹属4种青蟹以及中国沿海的青蟹样品,测定分析了其线粒体12S rRNA部分片段序列。结果表明4种青蟹的12S rRNA基因片段长度存在差异,每一种的个体都单独聚为1支,中国沿海的青蟹样品全部与Scylla paramamosain聚为1支,结果提示分布于中国沿海的青蟹主要是S.paramamosain。S.serrata,S.paramamosain和S.tranquebarica3个种间的亲缘关系较近,这3个种形成1个单系群并且具有很高的自展置信值。S.olivacea与其他3个种互为单系,与以上3种青蟹的亲缘关系较远。     

江苏油田真12断块E2s16储层特征及剩余油分布

真12断块E2s1^6是真武油田主力开发层系，以岩心、测井、生产动态资料为基础，通过流动单元、隔夹层、渗透率韵律类型等，研究与渗透率变化有关的储层非均质性，建立储层物性参数模型，通过油藏数模模拟两类剖面和建立不同含水期集层渗透率模型，研究油藏纵向油水运动规律，研究剩余油分布，为E2s1^6油藏最终提高采收率、改善开发效果提供依据。     

添加维生素B_(12)对围隔生态系内浮游植物群落动态影响的初探

本文评述了1991年进行的添加维生素B12对浮游植物群落动态影响的围隔实验结果。初步探明，富营养的围隔生态系中B12异常增加，会提高中肋骨条藻的细胞分裂速率，而增大了赤潮的规模。从长期的效应看，会影响整个浮游植物的结构；还可能影响演替的进程，甚至可能诱发需要维生素B12的甲藻赤潮。文中还针对这个实验方法作些评论．     

Climatological features of the global tropical subsidence region based on satellite observations

Consisting of subtropical highs and tropical buffer zone, the global tropical subsidence region is the subsidence branches of Hadley cell, Walker circulation and monsoon circulation which are important com-ponents of the global general circulation. This region is closely connected with Asian monsoon. Based on long-term satellite observations of OLR (Outgoing Longwave Radiation) and HIRS-Tbl2 (the bright tem-perature from High-resolution Infra-red Radiation Sounder Channel 12 (6.7μm)), the climatological fea-tures over the global tropical subsidence region are studied in this paper and the main findings are as follows:1) Based on the physical meaning of satellite observed HIRS-12 and comparison with the satellite ob?served OLR and climatological maps of conventional observations of geopotential height and vertical veloc?ity at 500 hPa from NCEP / NCAR reanalysis data, it was found that HIRS-12 might be the best indicator of the global tropical subsidence region from the satellite observations.2) Using satellite observed HIRS-12, some new climatological features were revealed, especially those related with Asian monsoon.3) Comparing the climatological characteristics of tropical subsidence regions between both hemi-spheres, it was found that the circulation in the Northern Hemisphere is more complicated and much closely related with monsoon circulation than that in the Southern Hemisphere. Sudden decay of subsidence movement before monsoon onsets over the South China Sea revealed by HIRS-12 suggested that in the future study of Asian monsoon, it should be paid attention to not only the development of convection but also the variation of tropical subsidence region. It is very useful to monitor the convective and subsidence movements in the tropics by using OLR and HIRS-Tbl2 have been observed from satellite.