新疆库车凹陷侏罗系多粒级黏土矿物分析方法及其对沉积-成岩环境的指示

本文选取库车坳陷侏罗系阿合组—齐古组的碎屑岩样品，利用Stokes原理，通过同步跟进与离心分析相结合的多粒级提取的方式提取不同粒径的黏土矿物，包括〉20μm；20μm～5μm；5μm～2μm；2μm～0．2μm和〈0．2μm。不同粒径组分的黏土矿物呈现出不同的型貌特征，在20～2μm范围内的样品中，自生黏土矿物少见，大量可见碎屑来源的黏土矿物，由于经过了长期的机械搬运，难见完整的晶型。在〈2μm的样品中大量存在自生黏土矿物，大量成集合体，同时也存在碎屑蚀变成因的黏土矿物。通过XRD方法定量分析了所分离出的不同粒径黏土矿物的相对含量，黏土粒径范围内的黏土矿物相对含量呈现些规律变化。碎屑伊利石含量有随着粒级的减小而减少的趋势，而自生伊利石和伊蒙混层只在2～0．2μm及0，2μm以下粒级才出现，并且集中在0．2μm以下粒级范围内；在古气候，沉积环境和母岩特性及分布基本一致的情况下，高岭石的分布有随着岩性的变粗呈现升高的趋势，而伊利石呈负相关关系。碎屑岩中黏土矿物的形貌特征表明，黏土矿物有陆源碎屑来源与自生两种成因，应用Decoform软件对0．2μm以下黏土矿物中不同成因的伊利石进行了计算，并就存在的比例与粒径的关系进行了讨论。黏土矿物组合揭示侏罗纪沉积环境由酸性环境向微碱性环境过渡，早侏罗世和中侏罗世早期为气候潮湿时期，高岭石的含量明显高于侏罗世晚期地层，恰克马克期到齐古期高岭石含量开始出现减小的趋势。从恰克马克期开始，气候缓慢向干旱变化，高龄石含量降低，而伊利石的平均含量明显增加，反映黏土矿物组合主要受沉积环境和成岩作用共同影响。     

杂樟油前馏分化学成分及利用

用毛细管气相色谱和色一质联机等对杂樟油前馏分进行了分析研究．共鉴定出16个化合物．其主要成分为柠檬烯、对伞花烃、α-异松油烯、γ-松油烯和△^8(9)-对孟烯等．以上5种成分占杂樟油前馏分总量的94．73％．     

我国与西方国家地方税制的比较分析

构建地方税收体系是地方政府相对独立性的客观要求，能够起到激励地方政府经济行为的作用，符合市场经济条件下政府分权的需要。在地方税制建设和中央、地方政府间税权的划分上，西方国家有较成熟的经验，通过比较分析，可以借鉴其精华为我所用。     

水系分形研究的若干思考

扼要总结了水系分形的研究成果，分析了水系分形研究中存在的问题，并从研究方向、技术应用和开拓新领域三个方面提出了相应的解决思路。     

Study on absorption coefficients of dual-energy γ-rays in determining phase fractions of multiphase flows

This paper discusses the principle and mathematical method to measure the phase fractions of multiphase flows by using a dual-energy gamma-ray system. The dual-energy gamma-ray device is composed of radioactive isotopes of 241Am and 137Cs with emission energies of 59.5 keV and 662 keV respectively. A rational method to calibrate the absorption coefficient was introduced in detail. The statistical error has been analyzed on the basis of the accurate absorption coefficient which enables determination phrase fractions almost independent of the flow regime. Improvement has been achieved on the measurement accuracy of phase fractions.     

Continued Fraction Algorithm for Matrix Exponentials

A recursive rational algorithm for matrix exponentials was botained by making use of the generalized inverse of a matrix in this paper.On the basis of the n-th convergence of thiele-type continued fraction expansion,a new type of the generalized inverse matrix-valued pade approximant(GMPA)for matrix exponentials was defined and its remainder formula was proved.The resuts of this paper were illustrated by some examples.     

Investigation of oil-air two-phase mass flow rate measurement using Venturi and void fraction sensor

INTRODUCTION Accurate measurement of multiphase fluids flow rates in the petroleum industry is of great importance. The most reliable measurement technique for multi-phase flow is separating the mixture and using con-ventional devices for measuring single-phase flow. However, in many cases the separation is not practical from both technical and economical points of view. An alternative solution is the multiphase flow me-tering system, usually consisting of a combination of devices for ph…     

连锁与交换规律计算问题的研究

针对连锁与交换规律的计算问题,提出了一组完整、严密、科学的计算公式。1 当无双交换或更高数目的偶数交换时,则:重组率=交换值=图距%=重组合表型的百分率。2 当有双交换或更高数目的偶数交换时,则:单交换Ⅰ(或单交换Ⅱ)的重组率=单交换Ⅰ(或单交换Ⅱ)的交换值=图距%;单交换Ⅰ(或单交换Ⅱ)表型(或配子)的百分率=单交换Ⅰ(或单交换Ⅱ)的重组率-双交换表型的百分率-更高数目的偶数交换表型的百分率;两端基因的交换值=单交换Ⅰ的重组率(或交换值)+单交换Ⅱ的重组率(或交换值)=单交换Ⅰ表型(或配子)百分率+单交换Ⅱ表型(或配子)的百分率+2×双交换表型的百分率或更高数目的偶数交换表型的百分率=图距%。     

周期连分数的快速逼近

本文通过建立一种新的数列｛ａｎ｝,其递推公式为ａｎ＝ａ２ｎ－１－２,得到了对周期连分数ｒ的快速逼近：ｒ＝ｌｉｍｎ→∞ａｎａ１ａ２…ａｎ－１,以及Ｐｅｌ方程的解的一个应用     

Determination of the volatile fraction of coal tar

The coal tar was qualitative and quantitative anMyzed by gas chromatography （GC） method. 74 components were identified exactly by gas chromatographY-mass spectrometry （GC-MS）. 31 components （37%） were quantitatively analyzed by gas chromatography-flame ionization detector （GC-FID）. The linearity, accuracy, precision, limit of detection （LOD） and limit of quantitative （LOQ） determination were inspected. The scope of quantitative analysis by CC was discussed. The experimental results of thermogravimetric analysis （TGA） proved that GC quantitative analysis of the coal tar was reliable.