第三届"全国野生动物生态与资源保护学术研讨会"在上海召开

由中国动物学会兽类学分会、中国生态学会动物生态学专业委员会、中国野生动物保护协会主办,野生动物保护协会(WCS)、国际爱护动物基金会(IFAW)协办,华东师范大学、华东师范大学生命科学学院和华东师范大学生态学国家级重点学科联合承办的"第三届全国野生动物生态与资源保护学术研讨会"于2006年10月25-29日在上海市召开.本届研讨会受到了全国广大兽类学工作者、动物生态学工作者和野生动物保护工作者的热切关注和大力支持,来自全国84个科研院所、高等院校和野生动物保护管理部门的近300多名代表参加了这次盛会.

草毡寒冻雏形土有机质补给、分解及大气CO2通量交换

调查草毡寒冻雏形土生物量及土壤有机质,利用涡度相关技术观测该区域作用层与大气CO2通量.结果表明：地下90%生物量集中于0～10 cm的表土层,年总净初级生产量约935.0 g/m2;土壤有机质含量在6.401～7.060%之间;净CO2通量呈明显的日变化和季节变化规律;5月中旬到9月底为CO2的净吸收（780 g CO2/m2）,其中以7月最高,净吸收量明显高于非生长季的,10月到翌年5月初CO2的净排放量（383 g CO2/m2）;全年固定碳高达397 g/m2.

青海东部黄河上游谷地种子植物区系

黄河上游谷地位于青海省的东部，约处北纬35°20′-36°25′，东经100°55′-102°50′。属青藏高原和黄土高原的过渡地带，海拔1780—4969m，面积约13480km^2，属于大陆性气候或高原大陆性气候类型。本区共有野生种子植物86科、404属、1027种。分别占青海省总科数的95.56％、总属数的79．53％、总种数的44．95％。区系特征如下：（1）种类相对较丰富，木本丰富。（2）植物种的中国特有性高，地区特有性小高。（3）就属的层面而言，中国种子植物区系15个分布区类型，特别是6个热带类型在青海境内唯一于本区都有出现。（4）属和种的分析表明，本区属于以北温带成分，特别是欧亚大陆温、寒地带典型成分为优势的，兼具温性、寒温和高寒类型的温带区系性质。（5）许多种、属和多数热带类型均以本区为边缘分布区，因而区系的边缘性质明显。（6）在植物区系地理方面，本区（特别是孟达林区）为华北区系、横断山区系、青藏高原的高山区系和柴达木高寒荒漠区系的交汇过渡地带，过渡区系性质明显。所以，本区作为远离青藏高原腹地的边缘地带和过渡区系，保持了其高原、高山类型的区系性质，应属距我国北方区系最为接近而高寒区系性质最弱的唐古特地区植物区系。

西藏产两种岩白菜中岩白菜素的HPLC测定

建立测定了岩白菜中岩白菜素含量的方法.色谱柱:Waters C18柱(5 μm×3.9 mm×150 mm),流动相:甲醇∶水∶磷酸=20∶80∶0.1,流速为1.0 mL/min,检测波长275 nm,AUFS 0.01,柱温为室温.结果表明,岩白菜素在0.16～0.08 μg有良好线性关系,r=0.999 2,平均回收率为98.14%,RSD为1.12%.本方法是测定岩白菜中岩白菜素含量的快速、简便、准确可靠的定量方法.

大鸨生长期能量代谢和蛋白质沉积量的初步研究

对不同日龄笼养大鸨(Otis tarda)的能量代谢和蛋白质沉积量进行研究.结果表明,50日龄、70日龄、300日龄和400日龄雄性大鸨的能量日摄入量分别为1 498.9 kJ、2 376.2 kJ、2 397.4 kJ和2 465.9 kJ;能量代谢率分别为82.3%、81.8%、81.8%和83.1%;蛋白质的日沉积量分别为5.8 g、13.4 g、15.8 g和13.5 g. 表3 参9

恩施硒中毒区土壤高硒的成因：自然硒的证据

在湖北恩施渔塘坝土壤硒分布的调查过程中，发现不同地段田地土壤中存在异常高硒样品。其硒含量变化范围是346～2018mg／kg，平均（899±548）mg／kg（n=11），相对于坝内成土基岩和耕作土硒含量0．5mg／kg与3．5mg／kg的水平而言，表明这些土壤硒受到了外来源硒的严重污染。扫描电子显微镜的观察表明，这些土壤样品中均有大量晶体状自然硒的出现，其特征类似燃煤型成因的自然硒，证实了上世纪50年代后期恩施当地居民石煤火熏土作肥的耕作方式，并直接导致了田地土壤硒的骤然增加。渔塘坝当地居民在1963年间的硒中毒爆发性流行，乃至恩施地区人畜硒中毒的普遍流行，极可能是人为因素引起.

滇西北衙金矿蚀变斑岩中的流体包裹体研究

位于爆破角砾岩筒边缘的接触带矿化斑岩中早期流体包裹体以CO2-H2O包裹体为主，而岩体内无或弱矿化斑岩中对应的流体包裹体以高盐度H2O-NaCl包裹体为主，反映来源于富碱岩浆的流体在它的早期阶段即分异出富碳相和盐水相，富碳相位于流体的外层，成矿元素主要在富碳相中迁移。因此，外接触带及其附近的围岩是成矿的有利部位。岩体内部蚀变岩石样品石英斑晶中的次生流体包裹体可大致划分为4个阶段。根据显微测温结果、形成温度和压力的估算及均一温度-盐度关系，结合H2O-NaCl体系P-T投影图，包裹体的4个阶段反映了环境条件的变化过程及相关的地质过程。

Low-temperature heat capacity and phase transition of n-hexatriacontane

The heat capacities of crystalline and liquid n-hexatriacontane were measured with an automatic adiabatic calorimeter over the temperature range of 80-370 K. Two solid-to-solid phase transitions at the temperatures of 345.397 and 346.836 K, and a fusion at the temperature of 348.959 K have been observed. The enthalpies and entropies of these phase transitions as well as the chemical purity of the substance were determined on the basis of the heat capacity measurements. Thermal decomposition temperatures of the compound were measured by thermogravimetric analysis. (C) 1999 Elsevier Science B.V. All rights reserved.

The Design of a Mechanical Assembly System

This thesis describes a mechanical assembly system called LAMA (Language for Automatic Mechanical Assembly). The goal of the work was to create a mechanical assembly system that transforms a high-level description of an automatic assembly operation into a program or execution by a computer controlled manipulator. This system allows the initial description of the assembly to be in terms of the desired effects on the parts being assembled. Languages such as WAVE [Bolles & Paul] and MINI [Silver] fail to meet this goal by requiring the assembly operation to be described in terms of manipulator motions. This research concentrates on the spatial complexity of mechanical assembly operations. The assembly problem is seen as the problem of achieving a certain set of geometrical constraints between basic objects while avoiding unwanted collisions. The thesis explores how these two facets, desired constraints and unwanted collisions, affect the primitive operations of the domain.

Sol-gel derived oxides and mixed oxides catalysts with narrow mesoporous distribution

A novel sol-gel process for preparing oxides and mixed oxides sols from precipitation and peptization process is reported in this article. Inorganic salts are used as raw materials in this study. It is found that the amount of acid has great influence on the stability and particle diameter distribution of the precursor sols. Ultrasonic treatment is used to prepare alumina sol at room temperature. The result of Al-27 NMR shows that there exist Al-13(7+) species in the sol. By controlling the sol particles with narrow particle diameter distribution, alumina, titania and silica-alumina (SA) materials with narrow mesoporous distribution are formed by regular packing of sol particles during gelation without using any templates. The results also show that the structure and particle diameter distribution of precursor sol determine the final materials' texture.

Como montar e usar a fossa séptica modelo Embrapa: cartilhas adaptadas ao letramento do produtor.

A fossa séptica modelo Embrapa é um sistema simples desenvolvido para tratar o esgoto dos banheiros de residências rurais com até sete pessoas. Com esta fossa o esgoto é lançado dentro de um conjunto de três caixas d?água ligadas uma a outra e não no solo, córrego ou rio, prática comumente observada em vários locais do País. Ao entrar neste conjunto de caixas d?água, o esgoto é tratado pelo processo de biodigestão que reduz muito a carga de agentes biológicos perigosos para a saúde humana. À medida que vários moradores rurais utilizarem fossas sépticas, espera-se reduzir a poluição do solo, córregos e rios. A natureza também ganha com a melhoria da qualidade do solo e água. Por isso, a fossa séptica é um instrumento de saúde pública e de melhoria da qualidade de vida no campo.

Understanding student information behavior in relation to electronic information services: lessons from longitudinal monitoring and evaluation Part 1

Rowley, J.& Urquhart, C. (2007). Understanding student information behavior in relation to electronic information services: lessons from longitudinal monitoring and evaluation Part 1. Journal of the American Society for Information Science and Technology, 58(8), 1162-1174. Sponsorship: JISC

Cloning and characterization of a putative fructosyltransferase and two putative invertase genes from the temperate grass Lolium temulentum L.

J. A. Gallagher, A. J. Cairns and C. J. Pollock (2004). Cloning and characterization of a putative fructosyltransferase and two putative invertase genes from the temperate grass Lolium temulentum L. Journal of Experimental Botany, 55 (397) pp.557-569 Sponsorship: BBSRC RAE2008