四川省地级市生态环境质量评价模型

在建立四川省生态质量评价指标体系的基础上,将径向基函数（RBF）神经网络模型用于四川省18个地级市生态质量评价和区划,实现了评价结果的可视化与直观化。评价结果与四川省生态质量实际状况相对比,表明了RBF网络的正确性和实用性,为实现四川省生态质量的保护提供了一条新途径。     

从生态哲学角度探析中国环境教育的理论定位研究

从生态哲学的角度来思考中国环境教育的理论基础可以使环境教育实践沿着正确的目标和方向进行。文章从生态学规律、马克思主义生态文明观和生态伦理学的价值观三个方面深入探析了中国环境教育的基础理论依据、基本哲学依据和伦理思想基础,正确梳理了中国环境教育的生态哲学思想定位。旨在为防止中国环境教育的理论异化、实践偏颇提供可以借鉴的思维向导。     

河南省甘薯产业化发展的SWOT分析

以甘薯产业化发展现状为切入点,采用SWOT分析方法谋求甘薯产业化合理发展的对策.在此基础上,构建了河南省产业化发展的SWOT矩阵,以期为河南省甘薯产业化发展提供理论依据.     

基于径向基函数(RBF)网在线建模的民航安全风险监测仿真系统设计与实现

通过分析国内外民航安全风险监测的研究现状,指出当前我国民航安全风险监测方面的不足,进而提出了基于径向基函数(RBF)网在线建模的民航安全风险监测仿真系统。在仿真系统设计中,详细讨论了实现系统的网络拓扑结构、体系结构,并将仿真系统分为三大功能模块,提出以安全隐患指标和安全性能指标分别作为仿真模块的输入段和输出段。在该基础上,利用C#语言和SQL SEVER数据库共同开发出该模拟仿真系统,并以空管仿真系统华东管理局年度仿真实例作了验证。     

山东省主要自然灾害初步综合分区

本文通过发生于山东省境内的各种主要自然灾害的分析，给出山东省主要自然灾害类型，结合山东省的自然地理、地质等特征，对自然灾害的区域分布进行了初步综合分区。     

安全社会学与社会学基本理论

安全社会学即是将安全问题与社会学知识结合起来,把安全看做一种社会过程,研究安全问题的社会原因、社会过程、社会效应及其本质规律。无论古典社会学还是现代社会学,无论社会学结构主义还是社会学建构主义,都长期在探讨个人—社会关系中的行动、理性、结构、系统4个方面,因此,安全社会学同样需要研究安全行动、安全理性、安全结构、安全系统。基于4个视角而不断涌现的社会问题说、哈贝马斯沟通行动论和系统-生活世界理论、吉登斯和贝克的风险社会理论、越轨社会学、社会冲突论、集合行为理论、女性主义和社会性别学等都直接为安全社会学提供了社会学的理论依据。     

土肥基础与持续发展农业

论述土肥基础与持续发展农业的基本内涵和特征；从历史的经验教训、片面发展经济的现实、地力监测的情况等方面，论证了土肥基础对持续发展农业的重要性；分析了广东省土肥基础的现状，提出了一系列加强土肥基础的对策：建立健全有关法规、有计划地扩大耕地面积、加强地力建设、改造中低产田和保护耕地环境等．     

Predicted changes in summertime organic aerosol concentrations due to increased temperatures

Changes in summertime organic aerosol (OA) concentrations in the Eastern U.S. are investigated for different temperature change scenarios using the chemical transport model PMCAMx-2008. OA is simulated using the volatility basis set approach, assuming that the primary emissions are semi-volatile and that the intermediate volatile and semi-volatile organic compounds are oxidized in the gas phase, resulting in products with lower volatility. For the basic temperature change scenario where biogenic emissions are kept constant, ground-level OA decreases by −0.3% K⁻¹ on average. Increases in the north (+0.1% K⁻¹) and decreases in the south (−0.5% K⁻¹) are predicted. The effect of the uncertain temperature dependence of the aging rate constant is modest, changing the OA by only 0.1% K⁻¹ over the temperature-independent case. For the more realistic scenario in which biogenic OA precursor emissions are allowed to increase with temperature (up to 10% K⁻¹), however, average OA increases by 4.1% K⁻¹, with even higher increases in southern regions. These results suggest that as temperature increases, complicated changes in production, partitioning and chemical aging will take place. Nevertheless, the change in biogenic emissions and subsequent production of biogenic OA is more than an order of magnitude more important than the changes in the rates of chemical and physical atmospheric processes.     

Detection, isolation, and identification of cadmium-resistant bacteria based on PCR-DGGE

This study focused on the screening of cadmium-resistant bacterial strains from Pb-Zn tailing. We investigated the diversity of microbial community inhabiting Dong-san-cha Pb-Zn tailing in Beijing, China, by polymerase chain reaction-denaturing gradient gel electrophoresis （DGGE） of 16S rRNA gene of bacterial strain, and found two dominant strains in the DGGE profile. Using special culture media, we isolated two strong cadmium-resistant bacterial strains. On the basis of morphological, physiological, and biochemical characteristics, BIOLOG, and 16S rDNA sequencing, the two strains were identified as Bacillus cereus and Enterobacter cloacae. Minimal inhibitory concentrations （MICs） of heavy metals for the bacteria were determined. E. cloacae showed higher MIC values for heavy metals and a larger range of antibiotic resistance than B. cereus.     

加强安全基础建设是做好林业安全管理工作的关键

从基础抓起,从加强班组(工队)安全建设入手,坚持以人为本,是做好安全管理工作的基础,促进企业安全生产形势的稳定。