Fire Retardant Textiles: A Particular Reference to China and Kenya

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Plovers breeding in the highlands of Jalisco, Aguascalientes, Zacatecas, and San Luis Potosí, central Mexico

From April to July 2008, we surveyed for breeding plovers at 32 sites in the semiarid highlands of Jalisco, Aguascalientes, Zacatecas, and San Luis Potosí, in the Central Mexican High Plateau. We documented evidence or presumption of breeding Snowy Plovers ( Charadrius alexandrinus ) at 3 sites, Killdeer ( C. vociferus ) at 15 sites, and Mountain Plovers ( C. montanus ) at 1 site. Our surveys showed that the region is important breeding ground for only the Killdeer. We documented an apparent breeding range extension of the Mountain Plover to slightly more than 200 km south of its previously known breeding range.     

十个值得一赌的科技趋势

20 0 0年 ,网络热、科技股热由极致而陡然退去 ,许多人在思考新经济与科技发展的真实性后得出的结论是 :绝不能就此走入漠视网络的另一极端 ,互联网技术是大势所趋。这篇文章虽然带有一些对科技股走势分析的意味 ,但对读者把握当今的经济趋势似也有一定的借鉴意义     

能源领域文献计量学分析

在全球经济日新月异的今天，能源问题逐渐成为世界各国政要需要解决的头等大事，自然，如何界定、衡量、评估能源的研究与发展也已成为各国智囊的首要任务。该文独创了多管齐下的方法清晰地描述了能源领域的研究现状：从能源研究机构发表的论文中筛选出与能源研究紧密相关的关键词组执行检索命令，生成最基本的能源论文数据组，然后通过能源专业期刊以及参考文献和引文对能源论文数据组进行扩展。该方法巧妙地同时保持了较高的查全率与查准率。数据分析结果表明，自1996年以来能源领域的论文翻了一番，其中中国保持了惊人的增长速度，论文数量有了大幅攀升，且科学研究专业化程度明显提高。与此相比，许多英语国家（除加拿大的能源领域研究好于世界平均水平）的能源研究进展缓慢，逐渐失去了传统的领先优势。     

去《火卫一》的任务

在7月份,苏联《质子号》运载火箭向火星发射了两个航天器,每个航天器装载24种先进仪器,其中有若干种仪器从未使用过。研究的对象是火星、火星的小卫星《火卫一》(Phob s)、太阳、行星际等离子体,以及遥远的宇宙射线源。这些探测器为有史以来发射的最先进最复杂的仪器舱之一。当它们于1989年初抵达火星作8个月逗留时,它们将稳妥地把苏联推到太阳系探索的领先位置上。     

从黑洞到生物学——计算机在2010年的影响

到了２０１０年，单击你桌上的个人电脑将足以迅速地从那时世界上最大的超级计算机──因特网本身调动你所需要的全部计算能力。广泛存在的超级计算力将引发问题复杂性的一次革命；所有的学科都将数字化，而科学家也将围绕共享的数据组织各自的工作。     

Development of DArT markers for a linkage map of flue-cured tobacco

Tobacco(Nicotiana tabacum) is one of the most economically important nonfood crops,and flue-cured tobacco accounts for approximately 80% of world tobacco production.An extremely narrow genetic diversity in the tobacco pool has led to a low efficiency of PCR-based molecular markers(such as AFLP and SSR).Diversity Arrays Technology(DArT) is a high-throughput hybridisation-based marker system that has been developed in many plants including wheat,which,like tobacco,has a complex genome.In this study,we developed a tobacco DArT chip that included 7680 representative sequence tags based on typical tobacco accessions.The 1076 DArT markers of flue-cured tobacco were identified and most(82.1%) of their polymorphism information contents(PICs) were greater than 0.4.An integrated linkage map that included 851 markers(238 DArT and 613 SSR),which is the highest density map of flue-cured tobacco to date,was constructed.This chip-based DArT system provides an alternative in high-throughput marker genotyping for tobacco.     

CONTROLLING DARKENING REACTIONS DURING MECHANICAL PULPING WITH ADDITIVES-A POSSIBLE APPROACH TO IMPROVING BRIGHTNESS AND BLEACHABILITY

INTRODUCTIONIn mechanical pulp bleaching, a higher initial pulp brightness makes it much easier to achieve a higher bleached pulp brightness and greater bleaching efficiency. Generally, there is a substantial increase in light absorbance (i.e. chromophore formation) that may lead to a brightness loss in thermomechanical pulping (TMP) processes. It is reported that easily oxidized structures, predominantly in the lignin portion of the wood material, are converted into colored structures b…     

微型机械：微乎，壮哉！

也许我们都太关注蓬勃发展的网络了 ,而忽视了一些幕后的“小朋友”。在过去的两年里 ,由于科研部门、企业界以及大量资金的共同推动 ,已经出现了一项新的技术 ,它的重要性完全可以与微处理器的重要性相提并论。要理解这项新技术 ,你必须尽可能的往“小”处想 ,想到非常的“小”。在过去的 3 0年里 ,工程师们已经发明了如何把传统的机器缩小到盐粒大小的技术。现在 ,我们已经有了不足一根头发丝粗的麦克风 ,有了微型的引擎 ,可以把成千上万的这种微型引擎安装在溜冰板上。此外我们还有可以插入血管的微型医疗探头。这些微型机械的正式名称叫…     

A family study of endophenotypes for psychosis within an early intervention programme in Hong Kong: Rationale and preliminary findings

The study of endophenotypes may be a viable strategy to tackle the genetic complexity and phenotypic heterogeneity of psychosis, but this research direction is relatively under-developed in China as compared to Western countries. We have recently initiated one of the first family studies of endophenotypes for psychosis in China. Patients entering an established early psychosis intervention service are recruited into this research project for phenotyping, endophenotyping and genotyping. At the endophenotypic...