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491.
本文提出了一种基于微相研究的神经网络井间参数内插预测新方法。该方法结合油藏微相研究成果,采用井位和微相信息作为神经网络的输入参数,对储层参数进行空间预测。本文以孤岛油田渤21断块油藏为例,利用空间分散井位点的渗透率资料和地区沉积微相信息进行井间渗透率内插预测。结果表明,该方法不仅可以方便地将一些先验的地区知识和专家经验用于井间参数预测之中,而且大大提高了井间参数的预测精度,为油藏建模提供了可靠的基础。  相似文献   
492.
相互作用绘景中态矢和算子演化的理论分析   总被引:1,自引:0,他引:1  
针对量子力学中的相互作用绘景,导出了态矢和算子的演化规律,从理论上阐述了该态矢和算子和其它绘景中的态矢和算子间的内在联系,这为在相互作用绘景中处理问题提供了有益的理论依据。  相似文献   
493.
吴泾电站10MW锅炉给水泵汽轮机   总被引:1,自引:0,他引:1  
介绍了吴泾电厂八期工程 10MW锅炉给水泵汽轮机的结构特点和系统组成。  相似文献   
494.
盐间非砂岩油藏中原油的均质性与非均质性研究   总被引:4,自引:2,他引:2       下载免费PDF全文
江汉盆地潜江凹陷潜江组盐间非砂岩油藏中,生储同层,烃源层品质好,成烃转化率高,且封盖条件极佳,但储集层渗透能力极低,油气运移条件差。纵向上各段盐间原油自成体系,分异性弱,但原油的成熟度、生标物等非均质性,表明韵律层内盐间原油普遍具有混源特征。盐间原油多为原地自生自储油与异地排驱的成熟油的混源油,这暗示了生烃次洼中生成的成熟油气可以在低渗透的盐间层中顺层侧向向构造高部位等低势区聚集,从而扩展了盐间油藏的油气来源。盐间原油的均质性集中展示了盐间原油的菌藻类母源和高盐度、高硫及强还原的成烃转化环境。   相似文献   
495.
In this paper the influence of heat treatment on the structural and mechanical properties of Al‐Si alloys was investigated. Silicon content in the examined alloys was in the range 11 to 14%, the contents of the other alloying elements were in the standard range [1] but all alloys were modified with strontium. The regime of the applied heat treatment was quenching (520°C/6h – cooling in water) + aging (205°C/7h –air cooling). The examinations were carried out at room temperature as well as at 250°C and 300°C. The obtained results showed a positive influence of the applied heat treatment on the mechanical properties of the examined alloys. The improvement of the mechanical properties can be considered as a consequence of a redistribution and change of morphology of the phases present in the structure of the alloys.  相似文献   
496.
Rent is the key factor in equipment lease. The business that equipment lease company of coal milling often engaged ill can be divided into three kinds, that is sublease, operating lease and inter lease, in lenn of the difference of the role of lease, character of business, object of the trade and condition of the market. The problem in rent calculating of the three kinds of lsase that equipment lease company of coal mining often involved was analyzed. Hope to be helpful to the decision-making of the equipment lease company of coal mining.  相似文献   
497.
We measure and compare externalities of IT and R&D capital stocks in different Korean industry sectors using inter‐industry input‐output tables of 1985, 1990, 1995 and 2000. We also compute the multiplier effects that relate to the directions of future economic effects. The key findings are as follows. First, we observed continuous capital deepening in all nine industries over the period of 1985 to 2000. Second, the backward multipliers of IT capital were the highest in the manufacturing industry. As for inter‐industry externalities, the indirect backward multipliers, which exclude intra‐industry backward multiplier effects within the industry, were also the highest in the manufacturing industry. Third, the forward multiplier effects of IT capital stock were the most substantial in the construction industry during the 1980s and in the manufacturing industry thereafter. Finally, using the transition multiplier matrix reflecting the backward effects of the two capitals in the past, the economic backward effects, especially the external economic effects, are predicted to increase through 2010 among all industries. The above findings suggest that, in order to maximize the forward and backward effects of the ever‐increasing IT capital, we need to formulate an industry policy reducing the cost of capital accumulation in the manufacturing industry through improvement in productivity of the IT industry.  相似文献   
498.
周宇 《毛纺科技》2004,(10):34-35
文中详细介绍了意大利OCTIR2500MM型梳毛机的3点技术改造,包括末道夫针布保护、末道夫出条机的改进、梳毛机过桥帘底帘升毛帘处的传动结构改进,通过试验证明,此项改进改装费用较低,降低了设备备件的损耗,效果非常显著。  相似文献   
499.
Conductive and non‐conductive fine powders were entrained by air at atmospheric temperature and pressure in a fluidization column of diameter 0.15 m made of stainless steel. Under equivalent operating conditions, entrainment of the conductive particles was markedly higher than for non‐conductive species. This finding cannot be explained by hydrodynamic factors. Examining the electrostatic interaction between touching particles reveals that dominance of the inter‐particle attractive forces hinders independent motion of non‐conductive particles in the freeboard. In addition, because of non‐uniform distribution of the electrical charges over the surface of dielectric particles, they are subject to stronger electrostatic forces than for particles made of conductive materials. © 2016 American Institute of Chemical Engineers AIChE J, 63: 1194–1202, 2017  相似文献   
500.
In super high‐rise buildings with varying story heights, the wind‐induced inter‐story drifts might violate the specified limit. However, these effects have seldom been concerned in wind‐induced response analysis. The theory and application of equivalent static wind load (ESWL) for wind‐induced inter‐story drifts of super high‐rise buildings were studied in this paper. A spectral decomposition method suitable for multi‐point excitation problems was firstly proposed. The formula of ESWL targeting for largest inter‐story drift was derived. For more reasonable structural design, the ESWL for multiple targets including displacement atop of building and inter‐story drifts at all story levels is put forward, in which the dominant modal inertial forces are adopted as the based load vectors. The presented methods were finally verified by its application for the wind‐induced response analysis for a tallest super tall building in Guangzhou. The researched results showed that the proposed spectral decomposition method not only has the same precision as the complete quadratic combination method but also possesses higher computation efficiency. The ESWL for multiple targets produces the same static responses for all the specified wind‐induced response, so it is much more rational for wind‐resistant structural design. Meanwhile, it is more reasonable to select the wind‐induced responses in the same direction simultaneously as the targeted values for obtaining the required ESWLs; however, the ESWL targeting for the wind‐induced responses in all degrees of freedom would generate more queer and unrealistic ESWLs distribution. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
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