药用多糖美白淡斑霜制备工艺研究及功能评价

目的:优选药用多糖美白淡斑霜的组方及制剂处方工艺.方法:通过实验观察,采用单因素实验法,测定其最佳黏度和稳定性,进而筛选药用多糖美白淡斑霜最佳处方工艺,收集受试者意见反馈.结果:茯苓、白芷和甘草多糖在浓度达到1 mg·mL^(-1)时,对DPPH自由基的清除效果分别达到了74.96%、69.17%和77.52%;最佳制备工艺为黄原胶5 g、苯甲酸钠0.05 g、柠檬酸0.05 g、甘油10 g、二甲基硅油2 g、单硬脂酸甘油酯1.5 g、葡萄籽油1 g、甜杏仁油1 g、杏桃仁油1 g、十六醇3 g、生育酚2 g、吐温-601.5 g、氯化钠3 g、茯苓多糖0.1 g、白芷多糖0.1 g、甘草多糖0.1 g、白玉兰精油1~2滴、去离子水适量,将水相和油相同时放于80℃水浴加热5 min~10 min,将水相注入油相快速搅拌混合,80℃下进行乳化至凝得霜剂;产品质量评价符合标准;人体试用评价结果优秀.结论:该工艺制得的药用多糖美白淡斑霜质量稳定、外观性状良好,易涂抹,保湿效果、滋润性及美白效果较好.

智能分类垃圾桶的设计与实现

设计了一种能够自动分类金属与非金属,能在垃圾桶已满时不打开顶盖,同时进行物联网通知的智能分类垃圾桶,介绍了其软硬件架构,并对实际案例应用进行了分析。

Generation and Tunable Focal Shift of the Hybridly Polarized Vector Optical Fields with Parabolic Symmetry

Based on a parabolic coordinate system,we theoretically design and experimentally generate hybridly polarized vector optical fields with parabolic symmetry of the first and second kinds,which can further enrich the family of vector optical fields.The wavefront of this new-kind vector optical field contains circular,elliptic and linear polarizations,and the polarizations can keep the same or change along the parabolic curves.Then we present the realization of tunable focal shift with the hybridly polarized vector optical field,and show a specific law of the focal shift of the focused hybridly polarized vector optical field with the parabolic symmetry.We hope these results can provide a new way to flexibly modulate focal fields,which can be applied in realms such as optical machining,optical trapping and information transmission.