回填土地区旋喷桩地基施工

介绍了旋喷桩在回填土地层的成桩原理，施工的工艺参数、程序，机具的选择及应注意的事项和采取的措施。     

LnCl/MCl熔盐体系能量不对称性(Ln=稀土元素,M=碱金属元素)

LnCl/MCl熔体中,库仑效应、Van der Waals效应和极化效应起着主导作用,导致溶液热力学性质相对理想溶液呈负偏差,并在xLnCl3≈0.2处,形成最大有序,用扩展的似化学理论模型能较好地描述这一特点.阐述了发展新热力学模型时应考虑到次近邻粒子及诸如空穴等似离子的作用,结合熔体结构研究,探讨熔体粒子间的相互作用机理.     

微机控制应激致大鼠的高血压的方法

用微机控制的方法产生随机电脉冲和噪声对大鼠进行了应激刺激实验，结果表明，重复刺激使正常血压的大鼠行为发生改变血压明显升高，心率加快，而且在停止应激后９天，血压和心率仍维持在较高水平。     

前向神经网络的故障性能

首先详细分析了固定型连接故障和错误输入信号对单个神经元的影响，然后研究了具有硬限幅作用函数的前向神经网络在存在固定型故障情况下的性能变化，并给出了性能与连接故障数之间的关系式及故障性能的分析方法。经用ＭｏｎｔｅＣａｒｌｏ方法仿真表明，文中提出的方法是正确的。最后还对分析的结果进行了讨论，说明这类网络的规模越小，对提高其容错性能越有利。     

乙醇－乙酸二元系统低恒压下的气液平衡

用自制气液平衡釜测定了乙醇－乙酸。元系统在７．９９９ｋＰａ（Ⅰ）、５．３３３ｋＰａ（Ⅱ）和２．６６７ｋＰａ（Ⅲ）条件下３套恒压气液平衡数据．其中在（Ⅰ）条件下测量平衡系统的Ｔ－ｐ－ｘ—ｙ数据，并用逐点法校验，符合热力学一致性（Ⅱ）、（Ⅲ）条件下平衡数据采用测定Ｔ－ｐ－ｘ推算ｙ的间接方法，并对气相组成进行实测校验，结果良好．３套恒压数据用单纯形法优化ＮＲＴＬ方程参数，拟合结果令人满意．     

考题库管理软件

本软件由题库、管理软件两部分组成，它们采用人机对话、菜单技术、中文字幕及操作提示等方式，只要使用者输入出题参数Ｓ１、Ｓ２、Ｓ３、Ｓ４，即可方便地打印出一份标准的试卷，还可同时打印出一份解答，操作简单，易于掌握．     

Estimation to the turbulent kinetic energy dissipation rate and bottom shear stress in the tidal bottom boundary layer of the Yellow Sea

High frequency velocity fluctuations were measured by using an acoustic Doppler velocimeter (ADV) in the tidal bottom boundary layer (BBL) of the Yellow Sea (YS) for 25 h. The turbulent kinetic energy dissipation rate and the bottom shear stress were estimated and analyzed. Results show that: (1) in the tidal BBL of the YS, the variations of the dissipation rate and the bottom shear stress during 25 h are (1.8×10^－8—3.4×10^－5) W?kg^－1 and (6.6×10^－4—7.5×10^－1) N?m^－2 respectively, indicating that there are strong dissipations in the tidal BBL of the YS; (2) in the well-mixed tidal BBL, the turbulence is mainly shear-induced locally and the production and dissipation are generally in equilibrium; (3) for the seas where the semidiurnal tidal current is dominant, both the dissipation rate and the bottom shear stress exhibit a strong quarter-diurnal variation; (4) the mean bottom drag coefficient C_d (0.45) is 0.0017 (corresponding C_d (1.00)=0.0015), but it has significant variations (0.0005—0.0082). The mean bottom roughness length is 2.8×10^－5 m     

Estimation to the turbulent kinetic energy dissipation rate and bottom shear stress in the tidal bottom boundary layer of the Yellow Sea

High frequency velocity fluctuations were measured by using an acoustic Doppler velocimeter (ADV) in the tidal bottom boundary layer (BBL) of the Yellow Sea (YS) for 25 h. The turbulent kinetic energy dissipation rate and the bottom shear stress were estimated and analyzed. Results show that: (1) in the tidal BBL of the YS, the variations of the dissipation rate and the bottom shear stress during 25 hare (1.8×10-8-3.4×10 -5) W·kg-1 and (6.6×10-4-7.5×10-1) N·m - 2 respectively, indicating that there are strong dissipations in the tidal BBL of the YS; (2) in the well-mixed tidal BBL, the turbulence is mainly shear-induced locally and the production and dissipation are generally in equilibrium; (3) for the seas where the semidiurnal tidal current is dominant, both the dissipation rate and the bottom shear stress exhibit a strong quarter-diurnal variation; (4) the mean bottom drag coefficient Cd (0.45) is 0.0017 (corresponding Cd( 1.00) = 0.0015), but it has significant variations (0.0005-0.0082). The mean bottom roughness length is 2.8×10-5 m.     

大豆启动功能片段的PCR检测

启动子在基因的表达调控中起着关键作用．已克隆到大豆的启动子，并保存于质粒pBI 10l的多克隆住点(HindⅢ和BamHI间)上．根据GenBank中质粒pBI10l、pBI 12l的全序列设计引物，来扩增这一启动功能片段．阴性、阳性对照都得到预期的泳带，但目的启动子带却与阴性带相同，说明质粒中的启动子片段在保存过程中已丢失．     

TiO_2含量对低镁含锰渣的流动性和热力学性质的影响

为探究钛矿护炉和锰矿洗炉条件下TiO_2对炉渣流动性和热力学性质的影响机理,本文通过黏度实验和FactSage热力学软件计算,分析了不同TiO_2含量低镁含锰渣的黏度和熔化温度、热焓及活度等热力学性质变化。结果表明,随着TiO_2含量的增加,炉渣黏度、熔化性温度和完全熔化温度降低,炉渣的流动性和热稳定性改善。炉渣热焓和液相中的TiO_2活度随TiO_2含量的增加而增大,而热焓的增大将增加高炉的热量消耗和燃料比。在冷却结晶过程中,TiO_2含量的增加有利于增大钙长石、钙钛矿和橄榄石等物相的析出量,而黄长石和硅灰石的析出量则随TiO_2含量的增加而降低。