Comparison of clinical efficacies of sodium ascorbyl phosphate, retinol and their combination in acne treatment

Acne vulgaris impairs the appearance of an individual and causes psychological irritation. Inflammatory acne lesion is caused by multifactor incorporates in each step of acne pathogenesis. In an attempt to archive inflammatory lesion treatment with the promise of prevention of acne vulgaris, randomized and double-blind studies on the comparison of the efficacies of topical formulations containing 5% sodium ascorbyl phosphate (SAP) and 0.2% retinol, separately as well as in combination application, were conducted. The resulting data showed that SAP reduced the inflammatory lesion by 20.14% and 48.82% within 4 and 8 weeks respectively. Application of the formulation containing retinol slightly improved the treatment efficacy as the lesion reduced by 21.79% and 49.50% after 4 and 8 weeks respectively. The combination treatment significantly reduced the inflammatory lesion by 29.28% after 4 weeks and 63.10% after 8 weeks of application. The most effective treatment was by using the combination of 5% SAP and 0.2% retinol, which incorporated the synergistic effects on lipid peroxidation and sebaceous gland function in addition to the enhancement of SAP permeability by the desquamation of stratum corneum influenced by retinol, keratin plug removal and anti-inflammatory effect of retinol. This study promises for the development of cosmetic products to overcome aesthetic and psychological problems caused by acne vulgaris.     

浅谈高校技术物资工作中的反季节性采购策略

提出在社会主义市场经济条件下，高校技术物资采购中的反季节策略．并讨论了该策略的适用条件、适用范围和应用方法．     

Understanding smoking cessation: The role of smokers' quit history.

Many studies have found smokers' quit history to correlate with quitting smoking, but little is known about the psychological processes explaining this relationship. This study uses the integrative model of behavioral prediction to examine how quit history affects quit intention. Data from 3,428 Dutch smokers demonstrate that quit history affects (a) beliefs about quitting and (b) the degree to which self-efficacy predicts quit intention. It seems that a relatively unsuccessful history of prior quit attempts reduces self-efficacy over quitting and strengthens the relationship of self-efficacy with the intention to quit. The results are used to call for more process-oriented research in order to advance our understanding of the relationship between quit history and quit intention. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

节能泡——一种高效卤钨灯

为应对全球气候变化,推进节能减排,世界主要国家纷纷出台淘汰白炽灯的计划。中国也即将推出逐步淘汰白炽灯路线图。后白炽灯时代,谁主沉浮?本文介绍了节能泡的相关性能指标,比较了几种白炽灯替代光源的优缺点,说明节能泡仍具有强大的生命力,并阐述了节能泡的发展方向。     

高频无极灯高频电源的研究

随着照明技术的发展,世界节能减排力度的加大,环保、节能照明灯已被人们接受,而高频无极灯以其高光效、高显色性、长寿命、无频闪、真环保等优势在照明行业已被认可,尤其是大功率的高频无极灯正在被研发。本文对大功率高频无极灯的高频电源和耦合器进行了比较详细的研究。     

微波硫灯灯泡的研制

介绍微波硫灯的发光原理;详尽阐述发光物质种类及用量、灯泡形状及体积、启动气体的种类和压力等因素对硫灯光效、光色的影响;启动气体和泡壳材料对硫灯启动的影响,以及发光物质用量、泡壳材料等因素对硫灯寿命的影响;研制了彩色微波硫灯,并对其色彩不稳定、不易重复且再启动困难的现象进行了技术分析;最后总结了微波硫灯目前尚存在的问题,对未来进行了展望。     

普通照明用自镇流荧光灯质量浅析

本文依据电子式自镇流荧光灯的 1 0 5批样品检测数据并结合国标要求 ,论述了目前我国普通照明用自镇流荧光灯的质量水平和存在的一些问题 ;并针对出现的质量问题提出看法 ,期盼引起生厂家的重视。     

装饰照明和普通照明用LED及其最终产品应用标准的识别和完善

文章介绍了国际国内照明电器产品标准体系的组成,以及如何在我国目前的照明电器产品标准体系中识别普通照明用LED及其最终产品对应的标准。文章还分析了目前普通照明用LED及其最终产品对应标准的缺陷,并且提出了改进和完善的方向及方法。     

学校规模效益初探

办学规模和办学效益是衡量一所学校办学质量的两个重要指标。如何求得规模与效益之间的最佳比例,从而使高职院校的教育资源得到最充分的利用并以最合理的办学成本取得较好的办学效益,是学校决策中一个值得深思的大问题。本文从高校办学基本条件中的用地面积、建筑面积、教学仪器设备值、图书藏量、学生用计算机台数、师资队伍等6项主要指标出发,探索我校目前条件下的办学效益。