Predicting Initial Formation Temperature for Deep Well Engineering with a New Method

With the progress of science and technology, human beings explore the energy under-ground with thousands of meters. As a thermophysical parameter, initial formation temperature (IFT) plays an essential...     

heory, controls parameter and application of the packed-bed electroosmotic pump

Theory and controls parameters affecting the output pressure and flow rate of the packed-bed electroosmotic pump (p-EOP), including zeta potential ζ, electric intensity E, length of the column L, cross-section area of the column A, dielectric constant ε and viscosity coefficient η of the liquid being pumped, are discussed concisely. And also, the fabrication and application of the p-EOP are introduced.     

Becker齐次模型参数估计的A-最优设计

利用椭园型偏微分方程极值原理和对称多项式这两种数学工具,解决了三分量 Bech-er 齐次模型(Ⅲ),(Ⅱ)和(Ⅰ)的参数估计的 A-最优设计。     

平面弹性连杆机构的KED分析

本文放弃了文献中引用的运动学假设和瞬时结构假定,考虑了刚体运动和弹性变形运动之间的耦合项,分析了梁的横向位移对轴向应变的影响。利用虚位移原理和达明贝尔原理,建立了构件和系统的运动微分方程式。以四杆较接机构为例,进行了KED分析。从所得结果可以看出,本文更好地反映出弹性对机构动态误差的影响。     

INFLUENCE OF POLYMER CHARACTERISTICS AND MELT-SPINNING CONDITIONS ON THE PRODUCTION OF HIGH RANDOMNESS 60PHB/PET THERMOTROPIC LIQUID CRYSTAL COPOLYESTER FIBER

Six samples of linear high randomness 60PHB/ PET thermotropic liquid crystal copolyesters are made by melt copolymerization at 290℃ , whose randomness about 0.955 is measured by the discernible 'H-NMR spectrometer. High tenacity, high module fiber is prepared by melt spinning in liquid crystal phase. The effect of molecular weight, shear rate, temperature as well as spinning drawn ratio on the mechanical behavior of 60PHB / PET copolyester fiber are shown that, lower shear rate (2~ 10 s~(-1)), higher temperature melting (300℃ ), lower temperature spinning (280℃ ) and higher molecular weight are favourable to the increase of the fiber mechanical properties. With the variance of drawn ratio, fiber mechanical property has a transition point due to traversion from shear-orientation to drawn-orientation. The copolyester fiber has high crystallinity, high orientation at the crystalline region, high chain orientation and high regular fibrillar structure.     

从CET-4新题型看大学英语词汇教学

本文结合最新的四级题型,分析了大学英语新四级考试中词汇的测试特点,对大学英语词汇教学提出了一些有效的教学方法.     

三维空间线性规划问题的图解法

本文着重论述怎样利用几何作图,并通过计算,求三维空间线性规划问题的最优解。     

浅析邯郸农行金库盗窃案涉案巨款追缴

倍受关注的河北省邯郸市农业银行支行金库被盗案近期有了一审结果,任晓峰、马向景二人以贪污罪被判处死刑。任、马二人非法获取四千多万元巨款用于购买彩票,案件受害方邯郸农业银行能否向当地体彩中心索回任晓峰等人用于买彩票而支付的巨款?善意取得能否适用于该案?本文通过分析善意取得制度基本理论,结合新出台的物权法规定,指出此案不适用善意取得,巨款应予追缴返还给邯郸农业银行。     

双参数量子代数SUqs（1,1）的表示：正离散序列

本文通过构造双参数量子群ＳＵｑｓ（１，１）生成元的ｑｓ－Ｂｏｓｏｎ实现，给出了ＳＵｑｓ（１，１）的正离散序列表示。     

GOSCA－CFAR检测器在干扰边缘中的性能分析

本文研究ＧＯＳＣＡ—ＣＦＡＲ检测器￣［１，２］干扰边缘中的性能。文中推导出了它的干扰边缘环境中虚警概率的解析表达式，分析了它抗边缘干扰的性能，并且与ＯＳ、ＣＡ、ＧＯ和ＳＯ等检测器进行了比较。结果表明，ＧＯＳＣＡ的抗干扰边缘性能比ＣＡ和Ｋ＿（ｏｓ）＝（ｋ＋ｌ）＿（ＧＯＳＣＡ）和ＯＳ相近，比抗边缘干扰性能较好的ＧＯ要差。