连铸初始凝固传热系数的测定

本文建立了一套热模拟试验方法，获得了初始凝固过程３ｓ之内的坯壳；提出了考虑固液界面热流的等效凝固潜热计算方法，并据此用一维凝固传热解析法计算出了初始凝固过程的热流分布和传热系数分布，比较和探讨了热顶结晶器材质对初始凝固传热的作用。     

大动态范围的环境噪声自动测量仪的研制

研制了一台动态范围为90dB以上的环境噪声自动监测及统计分析仪器。可以适用于声级起伏变化很大的环境噪声和交通噪声的全量程监测,并可以把测量结果和统计分析结果自动显示和打印出来,解决了随机性较强的环境噪声的自动监测问题。仪器內部有两只对数放大器,由于器件特性的限制,每只对数放大器的动态范围约60dB左右,但通过微处理器对双通道对数放大器的交替采样,并经过数据处理,实现了二对数放大器的测量动态范围的自动连接,这样扩大了量程(大于90dB)实现了仪器的全量程测试。     

Hume-Rothery相形成的金属能带理论分析

本文应用金属能带理论对Hume－Rothery相形成过程进行了分析讨论，结果表明：Hume－Rothery相是不同晶体结构的第I布里渊区在与费米面接触时形成的，此时将发生能量的陡变，导致电子浓度的改变．同时也表明了合金结构的变化是服从费米能最低原理的．     

应用电阻层系成像技术测量垂直管道气/液两相流分相含率

通过对垂直管道中气／液两相流截面相含率测量影响因素的分析,以电阻层析成像系统为检测工具,提出了提取原始测量数据边界特征值的方法和描述气／液两相流截面相含率的特征函数,得到了气／液两相流的截面含气率,仿真计算与实验测试结果表明,在研究导电的液相为连续相的气／液两相流情况下的分相含率时,上述方法是一种有效的测量手段．     

A new model for analyzing laminar forced convective enhanced heat transfer in latent functionally thermal fluid

In this paper, a new model to analyze laminar forced convective enhanced heat transfer in latent functionally thermal fluid is developed. The main characteristics of the model are- i) a new formula of the specific heat at constant pressure is used; ii ) a real heat transfer process is considered; that is, heat transfer processes occur not only between working fluid and microcapsules, but also between the mixture and tube wall; iii) the new method, which combines the newly developed axisymmetrical dual reciprocity boundary element method (DRBEM) with finite difference method (FDM), is used to solve the control equations of this problem. The new model is validated by experimental data. Some new physical results on the variational characteristics of the specific heat at constant pressure with space and time during phase-change process, the time-marching history of the phase-change interfaces and so on are obtained. Several main physical factors that affect enhanced heat transfer in latent functionally thermal fluid are numerically analyzed. Some new understandings for the mechanism of enhanced heat transfer in the functionally fluid are obtained.     

Solid-phase microextraction for flavor analysis in Harari Khat （Catha edulis） stimulant

This research examined the typical flavor compounds in the commonest type of Khat called Harari Khat grown in the region of Ethiopia.Twenty-eight compounds, which includes 1,2-Propanedione,1-Phenyl,Hexanol,Hexanal compounds,Limonene, Benzaldehyde with other flavors, were extracted by polydimethylsiloxane at room temperature for 30min from Khat samples,and identified by solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS).This method needs no organic solvents and required minimal sample.     

ATP content and biomass activity in sequential anaerobic／aerobic reactors

Specific ATP content of volatile solids was measured to characterize the sludge activity in a sequential anaerobic/aerobic wastewater treatment system, with an upflow anaerobic sludge blanket (UASB) reactor and a three-phase aerobic fluidized bed (AFB) reactor. The wastewater COD level was 2000-3000 mg/L in simulation of real textile wastewater. The ATP content and the specific ATP contents of volatile solids at different heights of the UASB reactor and those of the suspended and immobilized biomass in the AFB reactor were measured. In the UASB reactor, the maximum value of specific ATP (0.85 mg ATP/g VS) was obtained at a hydraulic retention time (HRT) 7.14 h in the blanket solution. In the AFB reactor, the specific ATP content of suspended biomass was higher than that of immobilized biomass and increased with hydraulic retention time reaching a maximum value of 1.6 mg ATP/g VS at hydraulic retention time 4.35 h. The ATP content of anaerobes in the UASB effluent declined rapidly under aerobic conditions following a 2nd-order kinetic model.     

我国古代"情志相胜,以情胜情"的心理疗法及其对现代心理治疗的影响

我国中医学源远流长,其"情志相胜,以情胜情"的心理治疗理念、相应的具体治疗方法及案例,对于分析现代人的心理疾病、并针对性地进行临床治疗具有重要的作用.     

注水开发后期河流相储层流动单元特征

在利用岩心资料划分流动单元的基础上,用岩心刻度测井资料建立了流动单元储层参数评价模型。利用该模型对储层空间流动单元进行划分和综合研究,结果表明,根据流动单元的渗流特征、储层质量、渗流能力及沉积微相等方面的特征,可将流动单元划分为7种类型。流动单元空间分布主要受沉积微相控制,剩余油主要分布于流动能力中等的Ⅴ—Ⅶ类流动单元中。在开发过程中,由于不同流动单元的变化程度不同,使不同流动单元之间的渗流能力相差较大。该研究结果揭示了在注水开发过程中高孔、高渗疏松砂岩储层不同流动单元的变化特征以及流动单元对微裂缝的形成、剩余油富集规律的控制作用,为高含水时期油田的控水稳油方案的制定提供了依据。     

位移连续变更与极限状态函数的连续生成

基于我国《建筑结构设计统一标准》的极限状态设计原则,结构物不允许出现影响正常使用的外观变形,提出了刚架结构位移连续变更方法·用数值分析与递推公式相结合的方法,实现连续变更结构的变形极限状态函数的连续生成·重分析不必重新形成结构刚度矩阵,不必反复求逆矩阵,使得识别系统主要失效模式的方法得以简化,有效地提高了计算时效,并为刚度可靠性分析提供了新方法·算例验证了方法的正确性及实用性·