QHD—Ⅱ模型中的核力

在泡泡图近似下，给出了量子强动力学ＩＩ模型中的核子－核子相互作用，由ＱＨＤ－１１模型给出的ＮＮ相互作用与通常的核理论符合得很好。     

流水线用水玻璃砂VRH—CO2法的研究

着重研究了水玻璃砂ＶＲＨ－ＣＯ２法流水线作业时如何调整真空度，ＣＯ２用量和添加剂等，以保证型砂起模的即时强度，同时使０．５～３ｈ的短期存放强度在１ＭＰａ以上，实验结果表明：单纯用真空脱一ＶＲＨ－ＣＯ２法都不能使水玻璃砂的短期存放强度满足流水线生产的要求，只有加入添加剂才可以使ＶＲＨ－ＣＯ２法取得最好的硬化效果，水玻璃模数及ＣＯ２用量都对水玻璃砂短期存放强度有一定影响。     

I_3─半群是幂零的若干充要条件

本文通过半群的代数理论给出了Ｉ＿３—半群是幂零的若干等价条件，并且导出几类是幂零的Ｉ＿３－半群     

Issues on Supply Chain Management

Although supply chain is regarded as an integrated pr ocess, actually, researchers and practitioners have primarily investigated the v arious processes of the supply chain individually. The competitive field in most markets requires well-designed integrated supply chain instead of individual o perations. In this paper, some traditional thinking of supply chain is given fir st, then SCM (Supply Chain Management) is introduced, which views the entire sup ply chain as a whole rather than individual process a...