总结

1979年在维也纳召开的联合国科技发展会议过了10年之后,通过外交谈判为世界规模国际合作制定的“宏伟兰图”已越来越明显失去其大部分本来意义和动力。在这样的背景下,联合国系统的组织目击的一个令人震惊的现象是许多发展中国家,特别是最不发送国家,都未出席科技问题的讨论。为即将召开的第二届联合国最不发达国家会议作准备,应当确保扭转这种趋势。联合国教科文组织就维也纳行动计划十年末评审而组织的这次讨论会表明,自从联合国科技发展会议召开以来所创立的国际合作机构大多在多边的联合国系统以外运作。因     

传统钓的好处

在水广鱼稀又不闹小鱼的时候，我很爱用传统钓，就算是闹小鱼，用糟食、传统钓的效果也更好些。[编者按]     

同一屋檐下

当我在长春藤缠绕的宿舍大楼踱步时——我指的是我几年前曾就读的大学里的宿舍大楼,偶尔会听到一些让我深有感触的谈话片段。“我想有自己的公寓,这样我就可以远离我妈了。”“哥们,那房子我一刻也待不下去了,我爸妈快把我逼疯了。”     

热河生物群一广泛分布的今鸟型类新种

在中国东北部热河生物群义县组四合当地点中发现了大量鸟类标本,其中绝大多数都可归入新种——赫氏旅鸟(Iteravis huchzermeyeri gen.et sp.nov.)(图1),这一命名献给南非已故生物学家Fritz Huchzermeyer博士,以纪念他对包括古生物学在内的诸多科学领域孜孜不倦的追求.这一新种代表了热河生物群最进步的今鸟型类类群.其骨骼形态与甘肃省下沟组发现的同属今鸟型类的玉     

A multiple-dose pharmacokinetics of polyethylene glycol recombinant human interleukin-6 (PEG-rhIL-6) in rats

Radiation therapy has been widely applied in cancer treatment. However, it often causes thrombocytopenia (deficiency of white blood cells) as an adverse effect. Recombinant human interleukin-6 (rhIL-6) has been found to be a very effective way against this thrombocytopenia, but IL-6 has low stability in blood, which reduces its efficacy. To increases the stability and half-life of rhIL-6, it was modified by polyethylene glycol (PEG). The pharmacokinetics and the tissue distribution of PEG-rhIL-6 labeled with ¹²⁵I were examined after subcutaneous injection in rats. The pharmacokinetic pattern of PEG-rhIL-6 was defined with linear-kinetics, and we fitted a one-compartment model with half-lives of 10.44–11.37 h (absorption, t _{1/2K a}) and 19.77–21.53 h (elimination, t _1/2Ke), and peak concentrations at 20.51–21.96 h (t _peak) in rats. Half-lives and t _peak of PEG-rhIL-6 were longer than those of rhIL-6 previously reported. In the present study, for deposition of PEG-rhIL-6 in rats, the tissue distribution examination showed that blood was the major organ involved, rather than liver. However, as to the elimination of PEG-rhIL-6, the major organ was the kidney. The excretion fraction of the injection dose recovered from urine was 23.32% at 192 h after subcutaneous administration. Less than 6% of PEG-rhIL-6 was eliminated via the feces at 192 h. These results indicate that PEG-rhIL-6 is a good candidate drug formulation for patients with cancer.     

The Colorado Learning Attitudes about Science Survey (CLASS) for use in Biology

This paper describes a newly adapted instrument for measuring novice-to-expert-like perceptions about biology: the Colorado Learning Attitudes about Science Survey for Biology (CLASS-Bio). Consisting of 31 Likert-scale statements, CLASS-Bio probes a range of perceptions that vary between experts and novices, including enjoyment of the discipline, propensity to make connections to the real world, recognition of conceptual connections underlying knowledge, and problem-solving strategies. CLASS-Bio has been tested for response validity with both undergraduate students and experts (biology PhDs), allowing student responses to be directly compared with a consensus expert response. Use of CLASS-Bio to date suggests that introductory biology courses have the same challenges as introductory physics and chemistry courses: namely, students shift toward more novice-like perceptions following instruction. However, students in upper-division biology courses do not show the same novice-like shifts. CLASS-Bio can also be paired with other assessments to: 1) examine how student perceptions impact learning and conceptual understanding of biology, and 2) assess and evaluate how pedagogical techniques help students develop both expertise in problem solving and an expert-like appreciation of the nature of biology.     

我的韩国母亲

我很爱我的母亲,哪怕她会在我热泪汪汪时,强迫我给远亲们打电话,拨出号码并把听筒按在我的脸颊上,在这个时候,我仍然爱着她。她总是爱发威。有一次在杂货店里,她竟然一把将我丢到地上,以此警告我别没大没小。她是我的最爱,也让我抓狂。她真的有点"奇葩"。你会觉得让她吃商店里买的点心就像要了她的命似的。她在韩国长大,周围都是韩国人,后来嫁了个韩国人,接着在35岁左右搬到了香     

曹植與梵唄之進入中國

一 從内典看梵唄進入中國的基本情况引用《中國佛教術語詞典》②的定義,梵唄是"宗教儀式中用來約束外在與平息内心的佛教唱頌③;也用於對佛陀的贊美."梵唄的第一個要素"梵",是"梵覽摩(Brahma)"的音譯,與印度術語語源相關;梵唄的第二個要素"唄",是對"唄匿"(pā tha,意為"咏唱")的漢語音譯.梵唄這種佛教咏唱(實際上是一種拉長的調子)發展成熟以後,在唐代傳人日本,日語發音為Bonbai④(譯者注:平假名為ばんばぃ).根據佛教傳説,詩人曹植(192-232)是中國的首位梵唄制作者.     

布朗运动是怎样阐明分子运动理论的

布朗运动清楚地揭示了无规则分子运动的存在。本世纪初,A·爱因斯坦和M·斯莫洛柯夫斯基对布朗运动都做过定量的描述,取得了很有价值的结果。     

运动性血管性水肿和气喘

剧烈运动可偶然发生寻麻疹,血管性水肿,气喘发作,喉痉挛,心律失常或血管性虚脱等综合症。我们现报告一个15岁的男孩在体育运动之后,发生血管性水肿和气喘发作达6次之多的例子。病例报告一个15岁的少年男子因参加篮球比赛,30分钟后突然发生呼吸困难,眶周浮肿被送往急诊。当时无皮疹及瘙痒。检查发现面部、双眼睑、双唇浮肿。血压130/70mmHg,