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These nonlinear chaos dynamitic models forecast oil consumption quantity of China. In this dissertation, it has mainly studied the fractural dimension measure to petroleum economics system, the phase space reconstruction modeling and prediction techniques to economic chaotic time series. It puts forward chaos dynamitic models, which are forecasting model for oil consumption. Corresponding countermeasures of the oil supply-security of China are suggested by analyzing the forecasting results and the problems existing in petroleum economic system of China, especially aiming at the balance between oil production and consumption quantity.
本论文主要研究了石油经济系统复杂性的分数维度量、经济混沌时间序列的相空间重构技术、建模和预测技术;建立了石油经济系统的混沌动力学模型:石油消费的预测模型;并将此模型应用于全国的石油经济系统研究之中,对全国石油消费量做出预测,根据预测结果分析我国石油经济系统中存在的问题,并提出对策。
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Soil fertility and elucidative density are important factors affecting biological properties of field mint, such as total leaves of main stem, quantity of stem, total leaves of small stem, quantity of efficacious leaves among these properties, total leaves of small stem relieved more influence, and the degree of influence can be impressed by the ration of total leaves of small stem to main stem.
不同施肥水平与种植密度是影响薄荷生物学性状,即单株主茎叶片数、分枝数、分枝叶片数及有效叶片数的重要因素,其中分枝叶片数影响较大,可用单株分枝叶片数与主茎叶片数之间的比值反映出影响程度大小。
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Thinking comprehensively of geological environment, ecological and nature environment, making surely the contents and emphasis of the environmental quantity assessment, establishing the index system of the environmental impact assessment and its ratings standard, studying the evaluation theories and its methods of the EQA, revealing time-space variety regulation of environmental quantity, studying the time-space distributes regulation of mineral pit water、waste heap eluviate water, tailingspile waste water and its heavy metals pollution and migration rules in surface water, groundwater, water department bottom mire, soil, applying division form R/ S analysis to research the development trend of heavy metals monitors data in water and soil, using mathematical statistics, gray theories, neural network, fuzzy evaluation, time order analysis to establish the forecast model of the EQA in mine geotechnical system.
综合考虑系统内地质环境、生态环境、自然环境,确定矿山岩土工程系统环境质量评价内容与重点,创建矿山岩土工程系统环境质量评价指标体系及其分级标准,研究矿山岩土工程系统环境质量评价理论和评价方法,揭示矿山岩土工程系统环境质量时空变化规律,研究矿坑水、废石场淋滤水、尾矿库废水时空分布规律及其引起的地表水、地下水、水系底泥、土壤等重金属污染及迁移规律,应用分形R/S分析研究水土监测时间序列发展趋势,再用数理统计、灰色理论、神经网络、模糊评价、时序分析等建立岩土工程系统环境质量预测模型。
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The topology models of MFIand MOR were built and the method of Configurational-bias Monte Carlosimulation was used for investigating the adsorption and distributions of ethanethiolas adsorbate in MFI and MOR type zeolites. The diffusion of ethanethiol in MFI andMOR type zeolites was studied by molecular dynamics simulation.The results show, the concentration of Zn2+ is the most important factor of theloading quantity of zeolite 13X and alumina, and the temperature secondly. The pHvalue which range from 2 to 3 effects on the loading quantity faintly.
构建了MFI 和 MOR 两种拓扑结构沸石的数学模型,以乙硫醇分子作为被吸附的目标物,采用偏倚蒙特卡罗方法模拟乙硫醇在MFI和MOR沸石上的吸附行为及分子分布密度,并利用分子动力学模拟乙硫醇在这两种拓扑结构的扩散行为,为实现面向硫化物进行吸附剂的微观结构设计作初步探索。
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The activated form of MMP-3 was located extracellularly, and its quantity had a grossly positive correlation with the quantity of total MMP-3 released extracellularly.
活化状态的MMP-3存在於细胞外,且其数量与释放到细胞外的总MMP-3浓度大致有正相关的趋势。
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The result makes clear: EThe tensile strength of TFE film increases somewhat along with the addition of drawing speed, and rupture outspread rate reduces;ETFE to succumb filmily somewhat along with the addition of drawing speed the addition that intensity follows drawing rate and increase somewhat, but the 2nd succumb intensity increases not big;ETFE to succumb filmily meet an emergency follows drawing rate increase somewhat, the 2nd succumb the amount of tangent and stretch model that meet an emergency reduces;ETFE film somewhat and model of the 2nd flexibility measure those who follow drawing rate to increase show downtrend, quantity of secant flexibility model and quantity of the 3rd stretch model do not have apparent change.
结果表明:ETFE薄膜的抗拉强度随拉伸速度的增加略有增加,而断裂延伸率随拉伸速度的增加略有减小;ETFE薄膜的屈服强度随拉伸速度的增加而有所增加,但第二屈服强度增加不大;ETFE薄膜的屈服应变随拉伸速度的增加略有增加,第二屈服应变则略有减少;ETFE薄膜的切线弹性模量以及第二弹性模量随拉伸速度的增加呈下降趋向,割线弹性模量和第三弹性模量则没有明显的变化。
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Based on the detailed water quality monitoring data of about 317 hydrometric stations from 1960 to 2000 and water quantity data of 20 hydrometric stations between 1919 and 2000 included in the Hydrological Yearbooks, which were all published by Yellow River Conservancy Commission, and socio-economic data related to the Yellow River, the characteristics of water quantity, major ion chemistry, organic contamination and their mechanisms, and integrated watershed management issues of the Yellow River have been systematically studied in this work.
本文在全面分析黄河流域300余水文站过去40年(1960—2000)水质资料和干支流20余水文站过去近50年(1950—2000)径流量资料的基础上,研究了:(1)、黄河水量的基本特征和近40年来的变化,重点讨论了黄河下游&断流&现象的发展及原因:(2)、黄河天然水质的基本特征、区域分布和影响因素;(3)、黄河天然水质40年来的变化趋势及原因;(4)、黄河水系氮污染和有机污染的特征、近40年来的发展,及其与社会经济发展的关系;(5)、黄河下游水质变化与水量变化的关系;以及,(6)、黄河水质水量管理中的制度安排问题。
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The result makes clear, 2 class give urban sewage plant on the molecular quantity interval that organic owner should center the dissolvability in water water in kDa, and the content of organic matter compares hydrophoby the element of content big; of organic matter measures hydrophily interval distributings different organic thing shows water to accept filter film flux and hold back rate having distinct effect, the organic matter under molecular quantity 2kDa causes accept filter film to appear water flux attenuation bigger, organic matter is held back rate is minor, the organic matter that amounts to 57.2%; element to measure 10 ~ 100kDa causes accept filter film to appear water flux attenuation gentlier, organic matter is held back rate is older however highest the organic matter that amounts to 73.8%; to kiss scanty sex to differ shows water to accept filter film flux and hold back rate having distinct effect, classics is right of velar surface obstruction determine, confirm cause film to appear water flux and the main material that hold back rate change to be hydrophoby material, and the change that hydrophily material causes is minor.
结果表明,城市污水厂二级出水水中的溶解性有机物主要集中在kDa的分子量区间上,且疏水性有机物的含量比亲水性有机物的含量大;分子量区间分布不同的有机物对纳滤膜透水通量和截留率有着不同的影响,分子量2kDa以下的有机物引起纳滤膜透水通量衰减较大,有机物截留率较小,达57.2%;分子量10~100kDa的有机物引起纳滤膜透水通量衰减较平缓,有机物截留率却较大最高达73.8%;亲疏性不同的有机物对纳滤膜透水通量和截留率有着不同的影响,经对膜表面阻力的测定,证实引起膜透水通量和截留率变化的主要物质为疏水性物质,而亲水性物质引起的变化较小。
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With the quantity of nitrogen increasing, phosphorus is more obviously improve the infiltrative quantity of moisture of soil.
施用有机物料后氮对下渗水累积量的减小幅度变小,而磷对土壤下渗水累积量的增加幅度变大。
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The company insists the"with artificial this, regarding technology as lead to,then run before creative"for the principle of operate the aim.the company owns a large quantity character excellence of technology talented person,and nicety of examination instrument,pass the equipment of the perfect combination cast intoed the feiersi the product to have no woth the quantity inside that the compare.year the have no 200 ten thousand rice,the product is extensive to used for the neering the is black electric have the metals burn chemical engineering the is black electric power powder that wait the profession percolation.
公司坚持&以人为本,以科技为导向,以超前创新&为理念的经营宗旨。公司拥有一大批素质优秀的科技人才,以及精密的检测仪器,关键设备来自德国、日本。科技与设备的完美结合铸就了菲尔斯产品无以伦比的质量内涵。年产无纺针刺布180万平方米,机织布200万米,产品广泛用于冶金、建材、有色金属、冶炼、化工炭黑、电力等行业的粉尘过滤。
- 推荐网络例句
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I can not make it blossom and suits me
我不能让树为我开花
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When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.
当温度高于 80 °C 左右时,滚道或滚动元件褪色是很常见的特征。
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The lawyer's case blew up because he had no proof.
律师的辩护失败,因为他没有证据。