稀土在催化剂中的应用

有关稀土催化剂的国内文献概况 根据历年《全国报刊索引》科技版“物理化学”中的“催化作用”部分及“试剂与纯化学品的生产”中的“催化剂”部分所作的调查统计,在1980年至1988年的9年间国内发表的有关稀土催化剂方面的文献共有112篇。

Comparison Between Lurr And State Vector Analysis Before Strong Earthquakes In Southern California Since 1980

There are seven strong earthquakes with M >= 6.5 that occurred in southern California during the period from 1980 to 2005. In this paper, these earthquakes were studied by the LURR (Load/Unload Response Ratio) method and the State Vector method to detect if there are anomalies before them. The results show that LURR anomalies appeared before 6 earthquakes out of 7 and State Vector anomalies appeared before all 7 earthquakes. For the LURR method, the interval between maximum LURR value and the forthcoming earthquake is 1 to 19 months, and the dominant mean interval is about 10.7 months. For the State Vector method, the interval between the maximum modulus of increment State Vector and the forthcoming earthquake is from 3 to 27 months, but the dominant mean interval between the occurrence time of the maximum State Vector anomaly and the forthcoming earthquake is about 4.7 months. The results also show that the minimum valid space window scale for the LURR and the State Vector is a circle with a radius of 100 km and a square of 3 degrees 3 degrees, respectively. These results imply that the State Vector method is more effective for short-term earthquake prediction than the LURR method, however the LURR method is more effective for location prediction than the State Vector method.

《中国植物志》第52卷2分册(红树林科.海桑科.石榴科.玉蕊科)

1、红树科和海桑科是中国植物志的一部分，1980年开始编著，1983年出版，本文记载红树科6属13种1变种，6属中除山红树属和竹节树属是内陆种类，其余4属均是组成红树林的主要树种，红树科的木杬属、角果木属、秋茄树属和红树属它们的树皮都含有丰富单宁为侵染皮革和染料的主要原料，又是防风防浪护堤的海岸防护林的主要树种及盐土指示植物，木材大都坚硬，纹理密微，在药用方面有止痛等作用。海桑科与红树科的生态习性极为相似也是构成红树林的主要树种和海岸防林不可缺少的种类，本文记载中国有2属4种。以上两科均详细叙述它们的形态、生态习性和经济用途。2、通过研究多年搜集的标本和资料，报导石榴科和玉蕊科的种类、分布和经济用途。石榴原产地中海沿岸至伊朗及其邻近地区，汉时张骞出使西域引入我国栽培，是我国第一批有文字记载的外来经济树种之一，既可食用和药用，又供观赏，综述历代文献，描述其形态演变，对研究外来（特别是地中海沿岸）经济植物的驯化有重要的意义。玉蕊科是有代表性的热带植物群，我国种类虽不多，但其发现对论证我国植物区系的热带亲缘的理论提供了直接的证据，故有一定的科学意义。

Threatened fishes of the world: Plesiomyzon baotingensis (Zheng & Chen, 1980) (Cypriniformes: Balitoridae)

We are grateful to all the voluntary donors of DNA samples in this study. We thank Hui Zhang and Yan-jiao Li for their technical help. We also thank Dr. Darren Curnoe for his critical reading of the manuscript. This study was supported by grants from the National 973 project of China (2007CB947701,2007CB815705), the Chinese Academy of Sciences (KSCX1YW-R-34, Westlight Doctoral Program), the National Natural Science Foundation of China (30525028, 30700445, 30630013 and 30771181), and the Natural Science Foundation of Yunnan Province of China (2007C100M, 2009CD107).

略论武汉东湖枝角类种类演替及其与生态因子的关系

本文报道了武汉东湖1980—1988年间枝角类的种类演替,并分析了种类演替与主要生态因子间的关系,同时还与他人的研究结果进行了比较。研究结果表明,二十年来,枝角类种类组成已趋于简单,并由六十年代的47种减少为八十年代的26种。优势种群也发生了较大的变化。虽然冬、春季节仍以透明溞(Daphnia hyalina)为第一优势种,但以往夏、秋季节的优势种群隆线溞一亚种(Daphnia carinata ssp.)规模却日趋减少,并趋于消失;而杂食性的短尾秀体溞(Diaphanosoma brachyurum)种

生态学和渔业 在省水产学会1980年学术討论会上的报告(記录整理)

<正> 湖南省水产学会召开学术年会,希望联系渔业谈一下生态学问题。由于自己懂得很少,所以讲不深透,挂一漏万,不妥和错误之处,望大家指正。一、现代生态学及其基本内容人类的生产实践推动了科学的产生和发展,而科学的发展又反过来促进了生