高职院校中“产学合作”运行机制的实施及评价体系的构建

从学校、企业、政策等方面分析了现有“产学合作”运行机制存在的问题，从知识机制、动力机制、调控机制、利益机制、风险机制及环境机制五个角度分析了校企“产学合作”机制发展的现状。以中国环境管理干部学院环境信息管理专业为例，提出了构建合理的“产学合作”评价体系的完整流程，流程中涵盖了评价的重要指标，从不同角度反映了合作的效果。     

Association of sleep problems with urinary concentrations of personal care and consumer product chemicals: a nationally representative,population-based study

Environmental Science and Pollution Research - Sleep problems are common in modern society and may be related to environmental chemicals. The objective of this study is to investigate the...     

Spatial distribution,pollution characteristics,and health risks of antibiotic resistance genes in China: a review

Environmental Chemistry Letters - With the extensive production and use of antibiotics for medicinal and veterinary purposes, antibiotics and genes that code for antibiotic resistance are now...     

Research on the anti-interference capability of the tourism environment system for the core stakeholders of semi-arid valley-type cities: analysis based on the multi-scenario and time series diversity perspectives

Environmental Science and Pollution Research - Given the relatively harsh natural environment in semi-arid valley areas, the attraction and radiation functions of semi-arid valley cities have...     

Comparative toxicity of rac- and S-tebuconazole to Daphnia magna

Tebuconazole is a chiral triazole fungicide used as raceme in a variety of agricultural applications. Earlier studies showed that tebuconazole is toxic to many non-target aquatic organisms but relative data for tebuconazole enantiomers are lacking. Thus, goal of this study was to evaluate and compare the toxicity of rac- and S-tebuconazole with Daphnia magna at both acute and chronic levels according to Organization for Economic Cooperation and Development (OECD) guidelines 202 and 211 respectively, to provide some guidelines for optimizing chiral pesticides application and management. The exposure concentrations were 0.1, 0.5, 1, 2, 4, 8, 10 mg L^?1 for both rac- and S-tebuconazole and their 48-h EC₅₀ values to D. magna were 3.53 (3.32–3.78) and 2.74 (2.33–3.10) mg L^?1 respectively, indicating that these both are medium toxic to D. magna with no significant toxicity difference at acute level. In chronic test, <24-h old D. magna were exposed to 0.01, 0.05, 0.10, 0.20, and 0.40 mg L^?1 of rac- and S-tebuconazole with one blank and one solvent control for 21 days according to OECD guideline 211. Four developmental (molting rate, days to the 1st and 3rd brood, and body length) and five reproductive (size of the 1st and 3rd brood, number of broods, and number of neonates) parameters for each D. magna were determined. Results showed that both rac- and S-tebuconazole significantly reduced the reproduction and impacted the development of D. magna at concentrations of 0.05 mg L^?1 or higher. Furthermore, S-tebuconazole was more toxic than raceme, and the difference between effects on the same parameters induced by rac- and S-tebuconazole was statistically significant. These results demonstrated that the chronic toxicity of S-tebuconazole might be underestimated in general use, and further studies should focus more on the biological behaviors of enantiomers and not just the raceme of tebuconazole and other chiral pesticides in the environment.     

高酚焦化废水萃取脱酚预处理

为了降低高酚焦化废水中挥发酚的浓度，实验研究了磷酸三丁酯煤油溶液在不同条件下对高酚焦化废水进行萃取脱酚预处理的效果。结果表明，萃取时间为8min，磷酸三丁酯煤油浓度为30％，温度低于40％，pH低于8．0，萃取比（油／水）R=1：2时，经过萃取后分水挥发酚浓度由4165mg降低到127．62mg／L，去除率高达96．94％，为后续生化处理奠定了基础。而萃取剂经过氢氧化钠溶液反萃取再生后，萃取剂的回收利用率可达94．25％以上。     

Impacts of Social and Demographic Factors on Residents’ Subjective Well-being in Rural China

Abstract

The objective of social development is to construct a harmonious society. In China, the key to a harmonious society is the happiness of more than 900 million farmers living in the rural areas. This study aimed to measure rural residents’ subjective well-being (SWB) through the day reconstruction method, as well as to analyze SWB’s influencing factors through a variety of statistical methods. The results showed that the average U index was 12.79%, indicating that respondents were unhappy 12.79% of the time. Twenty-seven percent of the population had a U index greater than 0, with the average value being 47%, indicating that these people were unhappy 47% of the time. The study also found that SWB varied according to the characteristics of the respondents. Logistic regression analysis showed that social and demographic factors, including age, education, county, household size, generation number, per capita income, migration status and social networking, which significantly affected rural residents’ SWB. The size of the impact varied with the different factors.     

稠油热采高风险作业现场安全管理研究与实践

稠油热采作业是海上平台一项高风险作业,南堡油田是多元热流体吞吐稠油热采作业的实验基地,通过几年的现场实践和持续改进,形成了热采等高风险作业系统的安全管理方法.在人员管理方面实行个体差异化管理,人员编制上采取定编定岗制度,根据工作态度实行刚性和弹性管理.以体系为基础,细化安全工具,推出区域承包责任制、五分钟示范教育、安全协管员、作业许可证双签、四定原则和过程风险控制等一系列有效措施.通过制约因素分析、细化工作界面、关键参数跟踪、阶段性纠偏总结会等提高质量管理.该套风险控制方法确保了八井次热采以及其他多项高风险作业的安全顺利进行,并被固化下来组成了油田的安全文化.     

办公室电脑操作者的职业危害研究

本文以研究电脑办公作业的职业危害为出发点,详细分析了电脑办公可能对人类身体、心理及大脑等多个方面造成的伤害,并在此基础上,针对不同类型的伤害从预防电脑辐射以及安全人机工程学的角度上提出了相应的预防措施,并得出以下几点结论:从安全人机的角度,应改进现有的办公家具,设计出更加安全、人性的办公家具,将电脑办公的职业危害降到最低;办公时应采取正确的操作方法,同时注意不要长时间地持续使用电脑并注意加强预防辐射的防范措施.     

Development of a Fish-Based Index of Biotic Integrity for Wadeable Streams in Southern China

With economic development in China, human-induced pressures on aquatic environments have grown and created an urgent need for tools measuring the ecological condition of aquatic systems. However, biological indicators for wadeable streams in China were poorly developed. This study developed and validated a multi-metric index of fish assemblages for wadeable streams of southern China to meet the requirement of the water project which has been carried on in China in recent years. Fifty-seven stream sites were sampled in April–May and November–December 2010 to develop an index of biotic integrity. A set of 45 candidate metrics were evaluated for range, responsiveness and redundancy, resulting in the selection of six metrics for the index: number of native species, number of rheophilic species, proportion of benthic riffle individuals, number of lithophilic species, number of omnivore species, and number of fish per hour sampling. The publicly available census data were used as independent data set to validate our method. Twenty-three sites were assessed as subject to significant (SP) or non-significant pressures (NSP) based on anthropogenic pressure evaluation. Our index performed well in discriminating NSP and SP sites, which suggested that our method could provide an accurate measure for wadeable streams ecosystem condition. We believe this integrated approach would meet the requirements for the water projects of China, and the process of developing the method could be used as reference for managing the subtropical streams in other areas of China or other states.