Allergic contact dermatitis from ethyl sebacata in haloprogin cream

A 13-year-old girl developed contact dermatitis to haloprogin (Halotex) cream. Patch tests incriminated ethyl sebacata, a solubilizer, as the allergen. To our knowledge, this is the second reported case of contact dermatitis attributable to this substance.     

Cholesterol biosynthesis in stomach and intestinal tissue of rat

Biosynthesis of cholesterol and its precursors (metastenol, latosterol and 7-dehydrocholesterol) was studied in the mucous and serous membranes of small intestine, secretory and esophageal regions of the normal rat stomach. The content of these sterols was also determined. The intensity of sodium 2-14C-acetate incorporation into cholesterol and its precursors in the mucous membrane of the small intestine and stomach secretory region is considerably higher than into the same sterols of the serous membrane and esophageal region. Cholesterol synthesis is most intensive in the small intestine mucous membrane and stomach secretory region.     

功率模块核心技术与光伏产业发展趋势分析——由PCIM-Asia看光伏核心器件IGBT发展

2008年受经济危机的影响,全球的经济形势受到重创。欧洲作为光伏最大的市场,受到的影响最为显著。不少欧洲国家缩减了光伏电站的开支,甚至取消了光伏产业的投资计划。中国作为世界上最大的太阳能电池产地,对出口有较强的依赖性,以消化产能。     

有限差分波束传播法应用于含有耦合的波导问题的研究

将有限差分波束传播法 (FD- BPM)运用于含有介电张量非对角元的二维波导问题 ,并由两个算例给出了 TM与 TE模耦合的转换过程 ,从而进一步论证了有限差分波束传播法完全优于快捷傅立叶波束传播法 (FFT- BPM) .     

Stabilization of parallel (recombinant) triplex with propidium iodide

Acquisition of adequate patient data for clinical management is hard enough, but higher quality patient data are needed for clinical audit and research. This article discusses some of the problems of using routine clinical data for audit and research, aspects of data quality, sources of audit or research data and their problems, methods for improving data quality, the benefits and problems of computer-based systems and current trends in the capture and processing of clinical data.     

中速数字(IDR)通信

本文介绍了目前卫星通信网络中主要通信方式之一——中速数字(IDR)通信技术。着重介绍了各次群的复接方式,简单地介绍了数字倍增及多址技术。     

海湾战争后火控系统的发展趋势

本文从海湾战争后武器装备的改进情况谈起,详述了弹炮合一防空武器系统、地炮火控系统、坦克火控系统以及大闭环控制等新的发展趋势。     

海湾战争后光电武器装备的发展动向

本文论述了海湾战争后世界各国光电武器装备的发展计划与技术改进情况,并对红外焦平面阵列和光电对抗技术的发展作了介绍。