Objectives: The purpose of this research work was to formulate and systemically evaluate in vitro performances polymeric microspheres nifedipine. Methods: Nifedipine containing two polymers, poloxamer 407 carbopol 934, were prepared by single emulsion cross-linking technique. Glutaraldehyde selected as the agent. A Box–Behnken design employed study effect independent variables, polymer concentr...

A new implementation scheme of AES (Advanced Encryption Standard) is proposed in this paper. The LUT based design of S-box consumes almost 75% of power. Instead of using LUT based S-box, composite field S-box design is used. That can reduce the amount of power consumption. The values of s-box are known to everyone. By masking the each value in the s-box by another masking function increase the ...

To solve the disadvantages of low protection grade, high weight, and cost existing locomotive power battery system, this study optimizes scheme introduces design concept two-stage protection. The purpose research is to improve level pack IP68, optimize sheet metal box structure into a more lightweight frame structure, simplify cooling mode for natural air cooling, maintain heat exchange capabil...

The aim of this study was to prepare orally disintegrating tablets (ODTs) containingdexamethasone (DEX) by direct compression method with sufficient hardness and rapiddisintegration time. In order to save time, money, and human resources in designing andimprovement of formulation, the statistical software Design Expert is used. Box–Behnkenresponse surface methodology was applied to evaluate and...