电炉钢渣活性激发研究

对电炉钢渣（熔炼渣和精炼渣）在机械激发、热激发和化学激发作用下的活性特征进行研究．研究表明：标准养护条件下，电炉钢渣活性指数随比表面积增加而显著增加；热激发作用下，电炉钢渣活性指数有较大幅度提高；热激发作用下钢渣的活性指数也随着比表面积的增加而提高；常温养护和蒸压养护条件下，精炼渣都没有表现出比熔炼渣更高的活性；无论是标准养护还是蒸压养护，电炉钢渣在各种碱存在的情况下，大多表现为强度下降，仅Na2s0。或NaOH在蒸压养护条件下对熔炼渣有激发作用，提高了熔炼渣的活性．     

Variation in interleukin 7 receptor alpha chain (IL7R) influences risk of multiple sclerosis

Multiple sclerosis is a chronic, often disabling, disease of the central nervous system affecting more than 1 in 1,000 people in most western countries. The inflammatory lesions typical of multiple sclerosis show autoimmune features and depend partly on genetic factors. Of these genetic factors, only the HLA gene complex has been repeatedly confirmed to be associated with multiple sclerosis, despite considerable efforts. Polymorphisms in a number of non-HLA genes have been reported to be associated with multiple sclerosis, but so far confirmation has been difficult. Here, we report compelling evidence that polymorphisms in IL7R, which encodes the interleukin 7 receptor alpha chain (IL7Ralpha), indeed contribute to the non-HLA genetic risk in multiple sclerosis, demonstrating a role for this pathway in the pathophysiology of this disease. In addition, we report altered expression of the genes encoding IL7Ralpha and its ligand, IL7, in the cerebrospinal fluid compartment of individuals with multiple sclerosis.