Green synthesis of silver nanoparticles using Solanum indicum L. and their antibacterial,splenocyte cytotoxic potentials

Research on Chemical Intermediates - Green synthesis of silver nanoparticles was carried out using Solanum indicum L. plant extract as a reducing agent. The morphology of the AgNPs was determined...     

Facile one-pot solvothermal-assisted synthesis of uniform sphere-like Nb2O5 nanostructures for photocatalytic applications

Research on Chemical Intermediates - Preparation of semiconductor nanomaterials with controlled morphology and uniform porous surface is of great interest for enhanced photocatalytic applications....     

Nuclear power plant optimal control by successive linear programming

An attempt to find optimal controls for an extremely load-following nuclear power plant during large load pick-ups is reported in this paper. The choice of the numerical method to solve this highly constrained dynamic optimization problem is discussed. The results reported demonstrate the efficacy of the successive linear programming method in tackling this problem without recourse to model linearization.The first author wishes to express his gratitude for many helpful discussions with Prof. S. L. Mehndiratta, Indian Institute of Technology, Bombay and Mr. B. F. Chamany, Bhabha Atomic Research Centre, Bombay, India.     

磁性纳米颗粒固定化细菌纤维素酶的活性和稳定性

在氨水溶液中进行Fe+2和Fe+3离子共沉淀并水热处理后制得磁性纳米颗粒Fe3O4,通过戊二醛活化将纤维素酶固定于其上。采用基于响应面法的Box-Behnken法(BBD)优化了制备条件,如磁性纳米颗粒浓度、戊二醛浓度、酶浓度和交联时间。 BBD分析结果表明,用实验数据可合理调节二次模型。利用生成的基于统计数据的等高线评价了响应面的变化,以理解纳米颗粒和酶活性之间的关系。运用扫描电镜、X射线衍射和红外光谱表征了纳米颗粒上酶的尺寸、结构、形貌和结合情况。采用诸如pH值、温度、重复使用性和存储能力分析了固定化纤维素酶的活性和稳定性。发现固定后的纤维素酶表现出更好的稳定性和活性。