青海油田采油一厂采出水处理技术改进

尕斯库勒联合站采出水治理是青海油田采油一厂环境保护的一项重要工作。为了对油田采出水进行综合治理,尕斯库勒联合站先后对原有的采出水处理系统进行了四次技术改造,通过多年的实践与探索,找到了满足青海油田采出水处理需求较为成熟的采出水处理技术。     

环境监管失职罪的正确认定

结合真实案例探讨了环境监管失职罪的两个难点问题,主张运用监督过失理论认定监督人的预见范围,运用偶然因果关系的理论分析监督人的失职行为与危害结果之间的因果关系。     

秦皇岛市污染源自动监控工作现状及对策

在对秦皇岛市污染源自动监控工作现状进行分析的基础上,结合秦皇岛市自动监控工作存在的问题,提出了建立和完善政策体系、严格自动监控设备市场准入制度、推进第三方机构运营管理和加大资金投入等可操作性的对策。     

环境法学专业模式建构与发展展望

以中国环境管理干部学院环境法学专业模式构建为研究对象,从专业设置的理论与现实依据、模式建构、专业建设的系列措施、努力方向等方面对环境法学专业建设问题进行了层层剖析,旨在高职高专院校层面、社会层面、教师层面以及学生层面释明设立法学专业的必要性。     

公路滑坡灾害链式反应阶段性识别方法研究

为了对公路滑坡的发育阶段做出准确判别,研究了公路滑坡灾害发育的链式反应机理,将滑坡的发育阶段划分为3个阶段。采用广泛调研和专家咨询的技术手段,从发育阶段的表现特征中选定了滑坡识别的相关因素集和评分,在此基础上采用模糊数学的方法对公路滑坡灾害的发育阶段进行了识别,并在陕南公路滑坡调查中初步应用。     

Concentration and distribution characteristic of main toxic metals in suspended particle material in Nanjing reach, Changjiang River

Six stations in the lower reach region of Changjiang River within Baguazhou Island, Nanjing reach were chosen to investigate the toxic metals pollution characteristic in suspended particle material (SPM). SPM concentration, as well as reflectance spectroscopy characteristic, toxic metal concentrations, and lead isotopes of suspended particle material were studied. SPM concentrations were obtained from fluvial cross-sectional sampling near the surface (20 cm) and the study presents the cross-sectional averages. SPM concentrations varied around 170?C300 mg L^???1. Reflectance spectroscopy measurements differed from each other over each cross-section but no common pattern characterizing the cross-sectional behavior of the measurements was observed. The metal concentrations in the SPM decreased in the sequence: Mn > Zn > Cu > Cr > Pb > Cd. The result of lead isotopes analysis proved that lead isotopes composition in SPM are mainly produced by natural contributions and influenced by anthropogenic activity at the same time.     

Characteristics of atmospheric non-methane hydrocarbons in Foshan City, China

Foshan is the most air-polluted city in Pearl River Delta. Non-methane hydrocarbons (NMHCs) were investigated for the first time in Foshan in winter 2008. Ethene, ethane, ethyne, propane, i-pentane, and toluene were the most abundant hydrocarbons and observed to be higher in Foshan than those in many other cities in China. Different from other cities, ethene and ethane were observed to be the two highest compounds in Foshan. Generally, the most abundant hydrocarbons showed high mixing ratios in the morning (0930-1030 hours), decreased to the lowest level in the afternoon (1430-1530 hours), and increased to higher value in the evening (1930-2030 hours). But i-pentane exhibited a different diurnal pattern with the highest level (13.4 ± 5.8 ppbv) in the afternoon, implying the acceleration of solvent evaporation resulting from higher temperature. Correlation coefficients (R(2)?= 66% for n = 6 at 95% confidence level) of the individual hydrocarbons with ethyne and i-pentane indicated vehicular emissions were the main sources of ethene, propene, i-butene, isoprene, benzene and toluene, while gasoline evaporation was responsible for n-pentane, n-hexane, and n-heptane. The good correlation of most of the hydrocarbons with ethyne, indicating vehicular emissions, were the main sources of NMHCs. B/T ratio was 0.36 ± 0.06, implying vehicular emissions acted as the major contributors as well as additional emissions of toluene emitted from solvent usage. According to investigation, it also suggested that LPG leakage was the main source of propane, while NG leakage was responsible for ethane in Foshan City.     

The Relationship Between Psychosocial Work Factors,Work Stress and Computer-Related Musculoskeletal Discomforts Among Computer Users in Malaysia

We analyzed occupational exposure to potentially infectious body fluids among health care workers (HCWs). Nurses were the most common exposed category of HCWs. In 73.6% cases needle sticks had been the reason of exposure. Recapping a needle was the cause of exposure in 6.9% accidents. Among 189 registered HCWs, 66 (34.9%) performed invasive procedures without any personal protective equipment. Prophylaxis with antiretroviral drugs was necessary in 43 (22.8%) cases.

As many as 60.3% of exposure incidents to potentially infectious material result from non-compliance with the relevant recommendations. Continuous education and training is critically needed to prevent occupational exposure to blood-borne infections among health care workers.     

PM2.5与呼吸防护

本文针对社会公众普遍关心的PM2.5及其呼吸防护等问题,从PM2.5的尺寸、组成和危害及自吸过滤式防颗粒物呼吸器的技术要求重点探讨了PM2.5可不可以防、如何来防,以期解除公众对PM2.5的神秘感,同时也提出了公众在面临PM2.5和大气污染时的应对策略。     

Forecasting iron ore import and consumption of China using grey model optimized by particle swarm optimization algorithm

The iron and steel industry plays a fundamental role in a country's national economy, especially in developing countries. China is the largest iron ore consumption market in the world. However, because of limited domestic iron ore resources, a large proportion of iron ore is imported from other countries. Faced with the conflict between the iron ore supply shortage and the growing demand, it is necessary for the government to predict imports and total consumption. This paper develops a high-precision hybrid model based on grey prediction and rolling mechanism optimized by particle swarm optimization algorithm. We use the China Statistical Yearbook (1996–2011) as our database to test the efficiency and accuracy of the proposed method. According to the experimental results, the proposed new method clearly can improve the prediction accuracy of the original grey model. Future projections have also been done for iron ore imports and total consumption in China in the next five years.