查询词典 biological population

Tenth. A series of mathematical model of genetic mechanism of common population have been established,they are mathematical description of genetic mechanism of common population, so the population that the population genetics researching have extended from panmixia population, inbreeding population,selfing population to common population. It will start the new research territory of population genetics and promote its development.

本文建立了普通群体遗传机制的一系列数学模型，这是对普通群体遗传机制的数学描述，它使群体遗传学所研究的群体由随机交配群体、近亲交配群体、自交群体扩展到普通群体。

The results showed that Liquidamba formosana, Quercus acutissima, and Quercus fabri populations had the dominant positions in the forest community of Purple Mountain Area of Nanjing. During the growth process, the mortality of L. formosana, Q. acutissima, and Q. fabri were higher in low age. After entering into the middle-age stage, the upper space was occupied by oak and L. formosana population all died. The mortality of Q. acutissima and Q. fabri populations were increased with the increasing of diameter class. L. formosana population in the Purple Mountain Area of Nanjing belonged to be the typical growing population and Q. acutissima population was a decreasing population. Q. fabri population belonged to be the growing population on the whole, but the diameter class in middle parts was incomplete and the population was difficult to be renewed. Among the studied quadrate, only one dominant population showed an aggregated distribution and other dominant species showed the random distribution. Either, all the dominant species in all the quadrates presented random distribution.

结果表明，枫香种群、麻栎种群和白栎种群在南京紫金山地区森林群落中占有优势地位；枫香种群、麻栎种群和白栎种群在其生长过程中，在低龄时期，死亡率都较高，进入中龄期后，由于上层空间都被栎木占据，枫香种群全部死亡，而麻栎种群和白栎种群的死亡率则随着径级的增大而增大；南京紫金山地区枫香种群属于典型的增长型种群，麻栎种群属于衰退型种群，白栎种群总体上属于增长型群落，但中间径级不完整，种群更新较为困难；在所研究的每一个样方中，一般只有一个优势物种呈聚集分布，而其他优势物种呈随机分布，或样方中所有优势物种都呈随机分布。

This showed that capacity of water-holding in biological soil crusts were obvious improve,and effected precipitation permeate or water second distribute process.The study results of"fertile islands"formation mechanism in biological crusts showed that biological crusts layer cover could increased nutrients content for below sand soil through precipitation permeate washing,and it promoted plants assimilate more nutriment.The matter import ways of biological soil crusts fertility island had many ways,including the effection of living macrobiotics metabolism in crusts levels,wind-sand flow of near surface,dust deposition and plants decomposition course,etc.Source of particle matter in biological soil crusts was wind-sand flow of near surface,and not dust deposition.Biological crusts layer cover had preserved effection for nature water content in 0-5cm soil layer,compared with the sand of no biological crusts layer,effecting precipitation permeate,and could not obvious restrained from the water evaporate process indoor experiment.

生物结皮层肥岛形成机制的研究结果表明：生物结皮层覆盖能够通过降水淋溶作用而增加下层土壤养分的含量，进而促进植物对养分的吸收；生物结皮层养分输入有结皮生物代谢、降尘、风沙流和植物分解矿化作用等多(来源：A73e3B3eC论文网www.abclunwen.com)种途径，但生物结皮层的颗粒物质来源主要是近地表风沙流，而不是大气降尘；生物结皮层覆盖对0-5cm土层自然含水量有一定的保护作用，并影响降水向深层渗透，不能有效的阻止表层水分的蒸发进程；研究表明采取人工促进技术能够在流动沙丘上形成生物结皮层，实现流动沙地的快速治理。

Finally, After overall analysis of 28 listed companies'annual report in 2007 which own forestry biological assets, there is reasonable conclusion that the fifth rule of biological assets in national Corporate Accounting Principles needs further revise and improvement, the main tasks are to revise the form of item listing in accounting statements and increase additional reporting content, namely forestry biological assets should concentrate to list the three types of consumption, production and public welfare, add detailed list related to forestry biological assets, increase the reporting requirement of forestry biological assets'categories and amounts or volume, reporting the listed companies about their methods of accounting and valuation and cost situation mandatorily, and last, report the other related information about forestry biological assets.

3对拥有林木类生物资产的28家上市公司2007年年报的分析研究，认为我国《企业会计准则第5号--生物资产》关于林木类生物资产会计信息披露规定需要进一步修订和完善，其主要内容是改进会计报表中项目列示方式和增加附表、附注披露内容，即林木类生物资产应将消耗性、生产性和公益性三类集中列示；增设相关林木类生物资产明细表；增加林木类生物资产种类和数量披露要求；强制性披露上市公司林木类生物资产核算办法、计价方法及费用归集情况；自愿披露林木类生物资产其他相关信息。

The characteristics, status of production and application, developing prospects, technical headways and problems in industries of biological catalyst, biological plastic, biological pesticide, biological fertilizer, biological oil refining, biological environmental protection and traditional biochemicals were also discussed.

结合生物工程的发展趋势，概述了生物技术在石油化学工业的应用领域，探讨了生物催化剂、生物塑料、生物农药、生物化肥、生物炼油、生物环保及传统生化产品等行业的特点、生产应用状况、开发前景、技术进展及存在的问题。

The whole process for the adoption of the original rough cut grid after sewage upgrade sewage pump upgrade, the grid or screen rate cut, after entering desilting tank, the sand separation of sewage water into the initial sedimentation tanks, more than one address, Shen early pool of water into the biological treatment facilities, activated sludge and biofilm,(which activated sludge of the reactor have aeration tanks, oxidation ditch, biofilm law, including biological filter, biological Wheel, biological Contact oxidation and biological CFB), The sedimentation tank sludge back to the initial part of sedimentation tanks or biological processing equipment, part of concentrated sludge into the pool, after digesting sludge into the pool, after dehydration and drying equipment, the sludge was last used

整个过程为通过粗格删的原污水经过污水提升泵提升后，经过格删或者筛率器，之后进入沉砂池，经过砂水分离的污水进入初次沉淀池，以上为一级处理，初沉池的出水进入生物处理设备，有活性污泥法和生物膜法，(其中活性污泥法的反应器有曝气池，氧化沟等，生物膜法包括生物滤池、生物转盘、生物接触氧化法和生物流化床)，二沉池的污泥一部分回流至初次沉淀池或者生物处理设备，一部分进入污泥浓缩池，之后进入污泥消化池，经过脱水和干燥设备后，污泥被最后利用。

From late 1970s,Chinese technological staff began to do deep research on the issue of population control and achieved a lot of researching results at three levels: population database , technology and soft ware of population analysis, the informational system of population management, the surporting system of population strategy and population forecast and software are at practical research level; the system control theory of nonlinear population distribution parameter in this article is of basic research.

从七十年代末，我国科学技术工作者开始对我国人口控制问题进行了深入的研究，分别从三个层面取得了许多研究成果：人口数据库、人口分析技术和软件、人口管理信息系统、人口决策支持系统、人口预测和软件等，属于应用研究层面；人口系统论和人口控制论等属于应用基础研究层面；而本文的非线性人口分布参数系统控制理论，则属于基础研究。

Impact of population growth on resources environment: population explosion's pressure to land resource, population growth's pressure to biological resources, population explosion's pressure to water resources, population inflation's pressure to energy.

人口增长对资源环境的影响：人口爆炸对土地资源的压力，人口增长对生物资源的压力，人口爆炸对水资源的压力，人口膨胀对能源的压力

Objective:to study the level of total anaerobic population, total aerobic population, four kinds of anaerobes and two kinds of aerobes in excrement of sufferers of varies kinds of irritable bowel syndrome and that of normal persons.methods:excrement specimens from 52 ibs sufferers of different kinds and that of 18 normal volunteers were collected, and the level of four kinds of anaerobes and two kinds of aerobes were quantified.results:the level of total anaerobic population and total aerobic population of excrement specimens of three kinds of ibs sufferers were different significantly, particularly the level of bifidobacterium and cillobacterium(p.01);the level of bacteroid population was higher significantly in diarrhea-predominant and mixed type of ibs sufferers (p.01);the level of enterococcus population was higher significantly in diarrhea-predominant ibs sufferers(p.05);among the aerobes, the number of escherichia coli and staphylococcus aureus colonies were increased by different level(p.01or0.05) in the ibs suffers, in particular, the number of escherichia coli colonies in diarrhea-predominant ibs sufferers increased most significantly.conclusion:sufferers of different types of ibs have different intestinal tract dysbacteria phenotypes.

目的：了解不同类型肠易激综合征患者和健康状况正常的人粪便中总厌氧菌群和需氧菌群及常见的4种厌氧菌和2种需氧菌的含量情况。方法：对临床上确诊的各类型ibs患者共52例和18例健康状况正常的志愿者，采集粪便标本进行总厌氧菌群和需氧菌群及常见的4种厌氧菌和2种需氧菌定量检测。

Their low wages has expedited the development of these enterprises. To date, the ratio of the external employed population in the total employed population has been on the rise. And to some extend, it increased the urbanization level of Quanzhou, reducing the spatial dispersion of its in-situ urbanization. Secondly, as a source of the in-situ urbanized population in Quanzhou, up to now, the proportion of the external floating population in the total population and urban population has shown a rising trend.

迄今外来就业人口在总就业人口中的比例呈上升趋势，并在一定程度上提高了泉州的城市化水平，削弱了其就地城镇化的空间分散性；②作为泉州就地城镇化的人口来源，迄今外来流动人口在总人口和城镇人口中的比例都呈上升趋势，他们在泉州各县市的分布由于乡镇企业的发展水平差异而具有一定的规律性。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。