台海两岸空战秘辛

1949年10月,蒋介石带着一帮残兵败将逃亡台湾,伺机反攻。从当时的形势看,国民党军要想通过空投和两栖登陆的方式＂反攻大陆＂不太现实,他们唯一可以实现的只有利用海空军协同作战的方式骚扰大陆沿海地区,拦截新中国的民船,从这个意义上说,国共内战将继续在蓝天上持续。     

技术并不会消除数字鸿沟

最近几年,像美国许多城市一样,莫德斯托(Modesto)也一直遭到媒体裁员和开支削减的冲击.记者的责任比从前更大了,他们越来越多地依靠微博、Facebook、博客、谷歌等采集新闻和报道.在这种数字转变之前,记者对美国贫穷的工人阶级的报道不仅偏少而且往往是脸谱化的或遭到扭曲的.如今,社交媒体使更多公民参与到地方新闻的制作和传播中来.这种新平台能帮助被边缘化的声音更好地在媒体上展现吗?     

世界信息与传播新秩序:浴火重生的主张

新华社社长李从军建议重新审视国际传播秩序,这使我们有机会回顾媒介历史上的那一个绚丽乐章.从上世纪70年代到90年代,从风起云涌的反帝反殖民运动,到苏东剧变,"世界信息与传播新秩序"(以下简称新秩序)概念在全球媒介政策辩论中独领风骚.这场辩论发端于发展中国家尤其是不结盟运动国家的政治论坛,继而延伸到行业与学术领域.     

假如没有《人民日报》的声音

5月7日,深圳市住房和建设局一纸禁止农民工上访讨薪的文件公布后,引起强烈社会反响,媒体一片讨伐之声,当天各方文章及跟帖达1万多条。其中尤以《人民日报》《开放包容不应只在大运会赛场》的评论最具力道。该文指出:如果说,公共场所禁烟、禁止企业乱排放等,是有利城市管理、造福民生之举,但‘严禁农民工通过群体性上访等非正常方式和手段讨薪’、‘禁租房客打110’一类     

少点“速度礼赞”

据报载,在铁道部日前召开的一次会议上,铁道部部长盛光祖要求,要严格执行铁路建设项目工期,尊重工程建设的客观规律,科学合理地确定工期安排,不得随意压缩工期。(2011年8月4日《京华时报》)     

Customized USB flash drives used to promote library resources and services to first-year medical and dental students

In line with its institution's commitment to keep new student orientation/welcome events "green," Columbia University's Health Sciences Library (HSL) applied for a National Network of Libraries of Medicine Middle Atlantic Region (NN/LM MAR) Small Projects Award(1) in Spring/Summer 2009 to explore paperless modes of outreach. This article describes the project that resulted from this funding, whose purpose was to determine whether customized 1 GB USB flash drives are a good vehicle for distributing library promotional materials to incoming medical and dental students. This project gave HSL librarians the opportunity to connect with students in a way that had not been done before and to consider how these new students use/view the information the library produces.     

美国国家档案馆:保存历史 走近国民

今天我与大家交流美国国家档案馆(NARA)在保存历史和开放档案中面临的挑战以及我们正在通过怎样的方式将美国公众与他们的档案建立起联系。一、政务公开对档案工作的影响奥巴马总统在就职第一天就发表了关于政务公开倡议的演讲,他在最近发表的     

这是恐狗狗

第二天,杰克和小程带两只狗去公园。 恐狗狗忽然停止游戏,站着一动也不动。它在听什么声音。杰克和小程也在听。     

Molecular Characterization of Iranian Patients with Possible Familial Hypercholesterolemia

Familial hypercholesterolemia (FH) is an autosomal dominant disorder of lipoprotein metabolism caused mainly by mutations in the low-density lipoprotein receptor (LDLR) and apolipoprotein B 100 (APOB) genes. Until now, the molecular basis of FH has been demonstrated in detail in many populations, but there is still very limited Molecular data concerning FH in Iran. The aim of this study was to characterize the LDLR and APOB gene mutations in an Iranian population. A total of 30 non-related Iranian possible FH subjects were studied. Diagnosis of FH was based on the Dutch Lipid Clinic Network diagnostic criteria. All samples were initially tested for three common APOB gene mutations including R3500Q, R3500 W and R3531C using PCR-RFLP assay. Subsequently, promoter and coding region of the LDLR gene was screened by PCR-SSCP analysis and positive results were confirmed by DNA sequencing. Four previously reported polymorphisms 1413G > A, 1725C > T, 1773T > C and 2140 + 5G > A were found in ~17% (5/30) of population studied. Moreover, no variation was found in APOB gene. Our data indicated that LDLR and APOB gene mutations have not contribution to possible FH in Iranian population studied here. However, we examined three common APOB mutations and LDLR in only 30 patients, and to determine the role of these genes in developing FH in Iran, more FH samples and populations needed to be investigated for the mutations of the related genes.