利用钛白粉废酸、二氧化锰矿和硫铁矿制取电解金属锰的研究与开发

采用钛白粉废酸、二氧化锰矿和硫铁矿浸出、除铁、硫化法除重金属及电解金属锰的工艺流程、技术条件与试验结果。取得了较好的技术指标以及质量达到YB／T051-2003高纯级DJMnA电解金属锰产品。     

Thermophysical Properties of Porous Sandstones: Measurements and Comparative Study of Some Representative Thermal Conductivity Models

The thermal conductivity and thermal diffusivity of porous consolidated sandstones have been measured simultaneously by the transient-plane source (TPS) technique in the temperature range from 280 to 330 K at ambient pressure using air as the saturant. The porosity and density parameters are measured using standard American Society for Testing and Materials (ASTM) methods at 307 ± 1 K. Data are presented for five types of samples ranging in porosity from 8 to 17 vol. %, taken from various positions above the baseline. The thermal conductivity and constituents of the minerals vary with porosity as well as with the position of the sample from the baseline. The thermal conductivity data are discussed in the framework of simple mixing laws and empirical models. Simple correlations between the effective density and porosity, and between the effective thermal conductivity and porosity, are also established     

Optimal bounded control of harmonically and stochastically excited strongly nonlinear oscillators

A procedure for designing optimal bounded control to minimize the response of harmonically and stochastically excited strongly nonlinear oscillators is proposed. First, the stochastic averaging method for controlled strongly nonlinear oscillators under combined harmonic and white noise excitations using generalized harmonic functions is introduced. Then, the dynamical programming equation for the control problem of minimizing response of the systems is formulated from the partially completed averaged Itô equations by using the dynamical programming principle. The optimal control law is derived from the dynamical programming equation and control constraint without solving the dynamical programming equation. Finally, the stationary probability density of the amplitude and mean amplitude of the optimally controlled systems are obtained from solving the reduced Fokker–Planck–Kolmogorov equation associated with fully completed averaged Itô equations. An example is given to illustrate the proposed procedure and the results obtained are verified by using those from digital simulation.     

固体可逆接触式玻璃电极的特性与测量大白鼠胃液酸度的试验

将固体可逆接触式医用微型玻璃电极用于测定大白鼠胃液的pH值及电位差，测量值与定型生产的酸度计所测数值相比较，统计其测量偏差。试验结果表明这种电极的测量偏差比较小，而且pH值与电位差呈线性关系，在医学上具有很好的应用前景。     

酱油曲菌的选择及酱油发酵条件

研究了日本酱油生产菌AspergillusoryzaeJP DQ 1,AspergillusoryzaeJP W和我国酱油生产菌AspergillusoryzaeAS3.951的酶系。结果表明:3种菌在浓酱油曲和白酱油曲培养基上均可产生α 淀粉酶、糖化酶、纤维素外切酶、果胶酶、酸性蛋白酶和中性蛋白酶;JP W是较好的白酱油生产菌,JP DQ 1是较好的浓酱油生产菌。还对酱油酵母的生理特性进行了部分研究,发现食盐浓度对酱油酵母生长影响较大,酱油发酵过程的盐浓度不宜超过3mol／L,低于2mol／L更佳。酱油酵母的较适生长pH为4.5～5.5。     

二值图像的游程法压缩及其改进算法

依据游程压缩算法的基本原理，实现了对二值图像的无损压缩，并针对点阵汉字库本身的特点，对算法作了进一步改进，压缩比有了较大提高。该算法实现简单，对计算时间空间的要求低，适合嵌入式应用环境。     

基于扩频通信的电力噪声分析

电力网络中，由于电力线的噪声和干扰对电力线的污染很大，严重影响了电力通信的质量。从理论角度阐述了电力网络的噪声分类及其特性，利用扩频载波理论对电力噪声的抑制进行了分析，并给出相应的公式，得出结论：扩频通信系统对于扩频频谱内的谐波干扰和基带频谱内的噪声有较强的抑制能力，对频谱无限宽的噪声则无明显的抑制作用，但可通过辅之适当的数字信号处理方法，如傅里叶变换、小波变换等，使噪声和干扰的危害降到最低程度。     

软件质量及可靠性保证的技术分析

分析了软件开发的上游工程和下游工程对软件质量的影响，用一个实例说明说明了上游工程对软件质量的决定性影响；对于下游工程，提出了４种质量保证技术，并对提高软件质量的两种技术－容错技术、程序正确性证明给予了介绍。     

GCr15轴承钢淬火马氏体的分析

针对GCr15轴承钢正常淬火组织中的黑白区及过热淬火组织中明暗相间的带状组织进行了论述。认为，黑白区与带状组织的出现是由于存在不同含铬量的合金渗碳体的偏聚和过热淬火造成的，可以通过生产工艺的优化进行控制。     

高炉喷吹废塑料工艺新探索

介绍了国内外高炉喷吹废塑料的研究进展,提出了煤与废塑料共熔喷吹的新思路,以期对我国“白色污染”的治理和冶金企业节约能源和降低成本提供一条新途径。