记忆指导模拟退火算法的研究

提出了改进模拟退火算法的记忆指导模拟退火算法。该算法能够利用已知信息对搜索过程进行指导，提高算法的搜索效率，该法对回火退火算法的计算量减少５０％。     

石英管烧结成型设备的微机控制

介绍石英管烧成型设备－－气炼机的微机控制系统，系统采用双ＣＰＵ单片微机微机控制四台步进电机以完成气炼机的多种复杂运动，文中介绍了控制系统的硬件和软件结构。     

流量过程多水源分割方法探讨

分析了目前流量过程线分割存在的问题,具体指出了同位素分析方法会使地下径流分割系统偏大的原因,提出了以稳定同位索和惰性离子质量平衡方程为基础的多水源流量过程线分割方法.     

模糊综合评判法在国际工程投标风险评价中的应用

以国际工程项目的投标阶段为主要考察对象,建立国际工程风险评价指标体系,应用层次分析法确定各指标权重,采用模糊综合评价法对国际工程投标风险进行评价,该方法克服了以往主观决策与定性分析的不足,达到了客观评估工程投标风险、提高对工程投标的准确决策的目的。本文结合实例说明该方法的运用,实例分析表明,上述模型的评判结果更为客观、科学、合理,对承包商的投标决策有一定的参考价值和指导意义。     

天山北坡低山草地复合体植物群落重要值差异分析

由于坡向、坡度、坡面与坡位的不同,导致水热及光照再分配,形成山地复合体,产生了不同的草地类型。本试验研究草原与荒漠草原复合体植物群落主要牧草重要值的差异,用SPSS软件包对其差异进行分析,分析影响山地复合体草地植物重要值的主导环境因子,结果表明,温度及光照是其主要影响因子。     

有理双子的"湮没"

对有理双子的“和”运算与“积”运算的“湮没”问题作了一般性的研究，其结果在简化双子运算，揭示其有理双子的稳态部分的性质有十分广泛的应用。     

乳的合成过程及其在生产中的应用技术

乳脂、乳蛋白和乳糖是牛奶中的主要营养成分，也是影响牛奶品质的主要因素，通过营养调控途径可以有效改善牛奶中的乳脂率、乳蛋白率和乳糖含量，本文阐述了牛奶中乳脂、乳蛋白和乳糖三大营养物质的合成过程、作用机理以及生产中的实践应用技术。     

Sediment flow behavior in agro-watersheds of the purple soil region in China under different storm types and spatial scales

Conservation tillage has proved to be an effective option to reduce erosion and particulate phosphorus (PP) losses from fields to watercourses. However, it usually leads to the higher losses of P in dissolved reactive (DRP) form if P accumulates into the uppermost soil layer.In this study we investigated the influence of CaCO₃-rich boardmill sludge (BMS, applied 7 years ago) on soil properties and percolate quality with soil samples as well as undisturbed soil columns taken from a long-term conservation-tilled clay field experiment. A short-term laboratory experiment was undertaken to evaluate whether newly added BMS (FS) can be used to improve the quality of percolate waters by reducing turbidity, PP and DRP.The hypothesis was that BMS reduces the risk of dissolved reactive phosphorus (DRP) leaching from conservation-tilled soil. BMS served as a liming agent and counteracted the no-till-induced acidification and accumulation of DRP in the surface soil layer. Surface soil pH was on average 0.3 units higher and soil Ca 500 mg kg⁻¹ higher in the BMS-treated plots than in the plots without BMS. The ability of BMS to enhance the availability of P for plants may prevent the surface accumulation of P in NT cultivation. At the same time, BMS-induced increase in Ca and EC of the surface soil suppress the diffuse double layer by reducing P desorption and leaching risk.In the laboratory experiment, FS reduced percolate turbidity by 80% and PP and DRP concentrations by 62% and 50%, respectively. FS probably improved stability of soil aggregates in the laboratory experiment, obviously through enhanced microbial activity. The covering effect and infiltration of water through the 0–5 cm soil layer seemed to be crucial factors in reducing P losses.BMS proved to be a promising material for the applications to the conservation-tilled fields. The effect of BMS on microbes and immobilization of nutrients, should, however, be studied further in fields under a wider diversity of conditions.