高原地区汽油机车气阻的防治方法

分析了高原地区汽油机车易产生气阻的原因，指出自然环境，油品品质，车辆供油系统结构和人为因素是导致气阻产生的主要因素，提出采用改变汽油滤清器的安装方式，调整汽车特性参数，增强油路和排气系统的隔热与散热能力，优化输油管路设计，换用晶体电动泵，选用高馏分汽油或采用高分子材料涂覆输油管路等方法，对防治高原地区汽油机车的气阻效果显著。     

PubMed系统特殊服务功能应用概述

美国医学图书馆（NLM）开发的PubMed是我国医学科技人员最常使用的一个生物医学文献检索系统,本文针对PubMed实际应用中的问题,主要介绍了该系统几项特殊服务功能的应用方法,包括期刊数据库、医学主题词数据库、单引文匹配器、批引文匹配器、临床咨询、外部链接和存储器等,旨在为需求者提供一些有益的帮助。     

现代物流对农业产业化的影响:以中国辣椒之都为例

为了揭示现代物流对农业产业化发展的制约和促进作用,运用物流管理理论对中国辣椒之都遵义县的辣椒产业形成及运作机理进行分析。结果表明:现代物流在遵义县辣椒产业化的发展中发挥了积极的支撑和拉动作用。结论:现代物流对农业产业结构调整、生产规模具有突出的制约和促进作用,是实现农村经济跨越式发展的有效途径和提高农业效益、增加农民收入的有效措施。     

构建社会主义和谐社会应重视思想政治教育

在社会主义和谐社会的构建过程中,应充分重视思想政治教育工作。随着社会主义市场经济体制的逐步完善,人们的思想活动趋向独立化和多元化,在这种背景下完善和创新思想政治工作,既可以发挥其思想导向作用,保持主流意识形态的主导地位,有利于强化党的领导,维护社会政治稳定,又可以团结广大人民群众,凝聚人心,充分化解社会矛盾。     

我国中小企业会计信息失真成因及对策研究

从界定相关概念入手,剖析了我国中小企业会计信息失真的原因,并提出对策。     

收集科技文献促进兵团农业现代化

信息时代的图书馆在服务我国农业现代化方面起着重要的作用,馆员在搞好传统工作的同时,要利用新的信息手段,收集兵团突出的先进技术,找出生产科研发展所需的资料及国外信息,并进行汇集、整理与加工,为需求者提供多种服务,加速兵团和全国农业现代化建设.     

核桃整形修剪技术

核桃整形修剪技术是早实良种核桃生产的关键技术,本文详细总结了黄龙县20多年来核桃整形修剪的技术与经验,针对修剪时期、修剪尺度、修剪技术作了详细分析,提出了解决办法.     

The Effect of Tryptophan on Serotonin-Like Neurons in Duck Cerebellum

Healthy Cherry Valley ducks were used in the present study. Different doses of tryptophan were injected intraperitoneally to them after being fasted 4 h （8：00 a.m.-12：00 a.m.）. One hour later, they were deeply anaesthetized and perfused. The cerebellum was removed to make serial paraffin longitudinal sections. The streptavidin-biotin-peroxidase complex （SABC） method was used to study the distribution of serotonin-like neurons in the cerebellum. All films were analysed by using a computer-assisted image analysis system. Serotonin-like neurons are only localized in cerebellar Purkinje cell layer. The optical density averages of serotonin-like neurons in 200 and 100 mg kg^-1 group are significantly higher than that of 0 mg kg^-1 group （P〈0.01）. These results show that serotonin-like neurons are distributed in Purkinje cell layer and that excessive tryptophan can affect the content of serotonin in cerebellum.     

辽宁省林地年度变更工作开展现状、问题及对策研究

林地年度变更工作是一项基础的林业资源调查工作,林业管理和发展的根本所在,做好林地年度变更工作意义重大。文章结合近年来辽宁省林地年度变更工作实际,梳理工作的组织和实施情况,发现工作中存在的问题,并提出解决对策,为更加准确、高效做好林地年度变更工作提供技术参考和理论支撑。     

Serological characterization of strains of Moraxella bovis using double immunodiffusion.

Sera were produced in rabbits against nine Moraxella bovis strains isolated in Brazil and three in the United States. Antigens were prepared for double immunodiffusion tests by thawing concentrated suspensions of the strains. Sera were tested against homologous and heterologous antigen preparations by the double immunodiffusion method. Sera showing precipitin bands with heterologous antigens were absorbed. Antigenic differences were detected between the strains and a provisional grouping of strains of M. bovis was suggested on the basis of antigenic composition. Differences between isolates from different geographical locations were found and some strains appeared antigenically more complex than others. The relevance of this work to vaccine production was suggested.