高效液相色谱中有效理论塔板数的变量因素和柱效率的研究

研究了高效液相色谱（ＨＰＬＣ）、高效离子色谱（ＨＰＩＣ）、高效离子排斥色谱（ＨＰＥＩＣ）和低压离子色谱（ＬＰＩＣ）中有效理论塔板数的变量因素，提出了能定量表述柱分离效率的参数──柱效率Ｓ及其计算方法。给出了其它色谱参数（分离度Ｒｓ，分离系数α和容量因子Ｋ＇）与有效理论塔板数及柱效率相关的实验结果。     

A Sensitivity Study of Single Column Model

A single column model (SCM) is constructed by extracting the physical subroutines from the NCAR Community Climate Model version 1 (CCM1).Simulated data are generated by CCM1 and used to validate the SCM and to study the sensitivity of the SCM to errors in its input data.It is found that the SCM temperature predictions are moderately sensitive to errors in the input horizontal temperature flux convergence and moisture flux convergence.Two types of error are concerned in this study,random errors due to insufficient data resolution,and errors due to insufficient data area coverage.While the first type of error can be reduced by filtering and/or increasing the data resolution,it is shown that the second type of error can be reduced by enlarging the data area coverage and using a suitable method to compute the input flux convergence terms.     

REMOTE SENSING OF THE SEASONAL VARIATION IN COLUMN ABUNDANCE OF ATMOSPHERIC CH_4

Infrared solar spectra on clear days were measured automatically by an infrared solarspectrometer(ISS)with 0.4 cm~(-1) resolution developed by us.A line-by line(LBL)computationmethod was used to calculate theoretical atmospheric absorption.In the wavelength range of 3.410—3.438 μm.the absorption is mainly due to atmospheric methane and water vapor.Columnatmospheric methane was retrieved from the recorded infrared solar spectra.The seasonal variationof column atmospheric methane in Hefei has been obtained from the measuremental data of nearly18 months since the April of 1997.and found that it is similar to that of background data.Theinstruments.principles of measurement and some of results were introduced,and the results arealso discussed briefly in the paper.     

芯吸效应与非饱和土柱试验

介绍了非饱和土柱试验构造技术,重点介绍了芯吸技术的应用,结合研究实际,给出了此方面的初步研究成果,研究显示芯吸技术是一种构造非饱和土柱试验的较好技术,但仍需进一步开展工作。     

Stokoe扭转剪切／共振柱仪性能及试验

本文简介了Stokoe扭剪/共振拄仪的结构、性能、原理、方法及通过各种试验方法所获得的部份成果。     

Dynamic poroelastic soil column and borehole problem analysis

The one-dimensional dynamic column and borehole problems of soil mechanics formulated on the basis of the poroelastic theory of Vardoulakis and Beskos are solved analytically-numerically. The quasi-static counterparts of these problems are analysed as special cases of the dynamic ones. Use of Laplace transform with respect to time reduces the column and borehole problems to ordinary differential equations with constant and variable coefficients, respectively. The transformed solution of these problems is obtained analytically for the column and by finite differences for the borehole problem, and after, a numerical Laplace transform inversion produces the time domain response. Both a suddenly applied and a harmonically varying with time load are considered. It is concluded that the significance of inertial effects depends on the kind of loading and that the degree of saturation for the nearly saturated case greatly affects the response.     

砂-粉混合料剪切波速的弯曲元及共振柱试验对比试验研究

为探讨测试方法、试验条件以及级配特征对砂-粉混合料剪切波速的影响，对具有不同细粒含量FC，相对密度D_r以及初始有效围压$\sigma_{3 \mathrm{c}}^{\prime}$的砂-粉混合料进行弯曲元和共振柱试验。结果表明:当D_r =35%或50%时，剪切波速V_s随FC的增大先减小后增大；当D_r =60%时，V_s随FC的增大而减小；弯曲元试验测得的V_s明显大于共振柱试验测得的V_s，随着FC的增大，弯曲元试验与共振试验得到的V_s差值逐渐减小，而当FC＞20%时，两种试验得到的V_s基本相同。在考虑V_s弥散性之后，不同FC的混合料弯曲元与共振柱试验得到的V_s结果具有较好的一致性。基于Hardin模型建立的砂-粉混合料V_s预测方法具有较好的预测效果。     

GZZ-1型自振柱试验机研制与性能试验

作者研制成功GZZ－1型自振柱试验机，该机和动三轴试验机共用一套控制、采集及气压系统，并把纵向共振和自振柱集成为一套系统。实现了计算机自动控制及数据处理程序化。性能试验表明，该试验机动态响应好，运行可靠，操作方便，具有较高的试验精度。     

应用相干体技术研究生产矿井中的特殊地质体

相干体技术是通过道与道之间的非相似性，以显示和突出与地质异常有关的地震数据的横向变化。通过相干体解释，可进行断层解释、岩性异常圈定，特别对小断层和陷落柱的发育部位及其空间关系有其独特效果：晋城赵庄矿整体构造简单，但陷落柱相当发育，利用相干体技术识别陷落柱，效果明显。     

开滦煤矿岩溶陷落柱的发育特征及规律研究

根 据 煤 矿 井下 生 产 揭 露陷 落 柱 的 实践 经 验 ,对 矿 区 内 岩 溶 陷 落 柱 的 发 育 特 征 、形 成 条 件 和 发 育 规 律 ,充 水 类型 和透 水 性,陷落 柱出 现 的前 预兆 等 几方 面谈 了 自己 的认 识 。