酸处理清除井下硫化锌垢

油井结垢，是井下常见故障之一，而以前所介绍的结垢物是以钡，铁，铅的硫化物居多，本文介绍了美国路易斯安那州近海的Ｍａｉｎ Ｐａｓｓ地区油井清除硫化锌的情况，对从事防垢的研究人员和现场技术人员具有一定参考价值。     

文化新闻缺文化?

一位宜兴的书画家来南京博物院开展览,美术界的轰动与新闻界的冷淡,形成极大的反差。 这位书画家早先有书名而无画名,其实他最初就是画画的,用的力气也比练字多,二三十年孜孜矻矻,很少示人。这回突然拿出一批山水画,竞比许多专业画家画得好,让人大吃一惊。美术评论家连连称赞笔墨老辣,省内有影响的画家也直感叹宜兴还有这么一个人才。据     

Introducing computer literacy skills for physicians

Computers are integral to medical practice, education, and research. While medical students learn computer skills during their training, many practicing physicians do not have the same computer experience. To familiarize this group with the exciting developments in medical informatics, the Himmelfarb Health Sciences Library and Department of Computer Medicine at the George Washington University Medical Center organized a workshop "Introducing Your Office Computer!" for attending physicians. The workshop featured a short lecture/video presentation on computer applications in medicine followed by a "computer fair" of five computer applications. Eleven physicians attended the workshop. Feedback was very positive; many called later to request more detailed instructions on using the programs demonstrated. It was a valuable experience for the staff, and new bridges were built between departments and clients.     

Advances in the phylogenesis of Agaricales and its higher ranks and strategies for establishing phylogenetic hypotheses

We present an overview of previous research results on the molecular phylogenetic analyses in Agaricales and its higher ranks (Agaricomycetes/Agaricomycotina/Basidiomycota) along with the most recent treatments of taxonomic systems in these taxa. Establishing phylogenetic hypotheses using DNA sequences, from which an understanding of the natural evolutionary relationships amongst clades may be derived, requires a robust dataset. It has been recognized that single-gene phylogenies may not truly represent organismal phylogenies, but the concordant phylogenetic genealogies from multiple-gene datasets can resolve this problem. The genes commonly used in mushroom phylogenetic research are summarized.     

美丽的牺牲品

作为北京知青，我曾被下放到内蒙生产建设兵团劳动，一年半以后因受伤病退回到北京。许多年过去了。如今，我已从当年那个18岁的女孩变成一个15岁女孩的母亲。在岁月的流逝中，许多东西都在我的记忆中渐渐淡去了，但是，有两个北京女孩的悲惨命运却挥之不去，让我至今难忘。     

从变身到强身 武汉晚报个性化发展之路——上篇 风雨兼程二十年

《武汉晚报》曾以影响几代武汉人的巨大品牌价值齐名于《钱江晚报》．《扬子晚报》和《深圳晚报》，并称晚报界的“四小龙”。进入到上个世纪90年代中期后，《武汉晚报》并没能躲过市场浪潮的冲击，在长达8年的攻防战中，从无限风光的巅峰滑落到濒临死亡的深渊，再到重返生天，从倾全力办子报到排万难合并重组，     

用科学的发展观指导档案工作

该站在领导的角度，提出了党委、政府对档案事业发展的领导和支持应持有科学的发展观，以保证档案事业与社会经济的协调发展。