Flies can use prior experience to improve visual cognitive abilities

Modification of ongoing and future behaviors based on prior experience demonstrates the so-called "intelligence" in animals and even human beings.     

宇宙的構造

廣泛地展開自然科學中關於物質和宇宙的構造方面知識的宣傳,對於破除迷信、建立科學的宇宙觀起着巨大的作用。這種工作也是科學館、圖書館、文化宫、文化館(站)等宣傳機構中的經常任務之一。目前在我國,人们很需要這方面的知識,可是這種工作做得很不夠,特別是很不普通。形象化的展覽是容易收到效果的,然而這方面的資料尤其缺乏。     

太阳能电池

可弯曲的轻质太阳能电池展开竞争     

有用矿物的生成

各种金属矿物——铁、铜、铝等和非金属矿物——食盐、钾盐、煤、石油和磷块岩等,所有这些巨大的财富都是在地球内部或地球表面上生成的。在地球表面上生成的矿物叫做沉积矿产;在地球内部深处生成的叫做深成矿产。流动的水——小溪和河流,冲击着河岸,从河岸上带走了石头、砾石、砂子和泥土的细粒,然後把它们沉积在河床、海底及湖底的平静的水中,生成由黏土和砂子构成的沉积岩的堆积。河流带入海洋及湖沼中的不仅是固体的细粒,同时还带入溶解的物质——盐类。在干燥及炎热的地带,海水猛列地蒸发着。这种蒸发的效力,在接连着一个狭小海峡     

Insect-specific proteins identified

With nearly one million classified and named species, the insecta clade is the most diverse group of higher organisms on earth in terms of category, behavior, physiology and genetics.     

79 new cyclopeptides discovered from 28 plants

A key innovative research result has been achieved in systematic chemistry of plant cyclopeptides (PCPs), a group of important plant metabolites, by a research team with the CAS Kunming Institute of Botany (KIB)in the capital of southwest China's Yunnan Province. According to a recent announcement released by the Institute, its chemists have brought to light 79 new PCPs.     

建设师的汽车作品设计

他的建筑作品采用独特的缠绕式结构．风格飘逸。如果他用这种理念来设计一种全新的概念车．那将会是什么样呢？     

Medical librarian 2.0

Web 2.0 refers to an emerging social environment that uses various tools to create, aggregate, and share dynamic content in ways that are more creative and interactive than transactions previously conducted on the Internet. The extension of this social environment to libraries, sometimes called Library 2.0, has profound implications for how librarians will work, collaborate, and deliver content. Medical librarians can connect with present and future generations of users by learning more about the social dynamics of Web 2.0's vast ecosystem, and incorporating some of its interactive tools and technologies (tagging, peer production, and syndication) into routine library practice. doi: 10.1300/J115v26n01_01.     

Making a difference? Measuring the impact of an information literacy programme for pre-registration nursing students in the UK

OBJECTIVES: To investigate whether an information literacy programme for pre-registration nursing students at a UK higher education institution is effective in developing their skills and confidence: examines students' skill levels, factors affecting their confidence, and relationships between skills, confidence and demographic characteristics. METHODS: Quantitative and qualitative techniques were used: pre- and post-tests to measure changes in students' skills and self-assessed confidence levels after two key sessions in their first semester (n = 29); semi-structured interviews to explore factors affecting confidence (n = 5). RESULTS: Findings demonstrated positive impacts on skills and confidence. Key areas of skill development included: identifying journal articles, selecting search terms and evaluating website quality. Factors affecting confidence included: successful 'mastery' experiences in searching for information and the programme itself, especially small-group sessions, handouts and staff support. Evidence on links between skills, confidence and demographic factors was inconclusive. CONCLUSIONS: The study demonstrated the programme's effectiveness and identified areas for development, including the need to help students understand the relative merits of search engines and other sources. Evidence has contributed to a change in departmental policy, making attendance at sessions mandatory. Further studies have been recommended.