直流电絮凝法处理难降解印染废水研究

采用电絮凝法处理印染废水，验证了不同极板材料、废水pH值、电流密度、电解时间等因素对废水色度和CODCr去除效果的影响。实验结果表明，电絮凝法印染废水处理的最优工艺条件为：全铁极板、废水pH值10～11，电流密度200～250 A/m2，反应时间5～8 min。在此条件下色度去除率可达98%左右，CODCr去除率可达70%左右。     

战略重组与调整——农药产业发展之新趋

本文对世界跨国公司间的强强兼并，跨国公司在我国的合资合作动态及代表我国农药工业发展主流的20家上市公司的投资方向等三方面进行了全面分析，详述了农药产业的战略重组与调整的发展趋势。     

浅析炼厂质量文化建设

本文结合玉门油田炼油化工总厂实际，阐述了企业质量文化建设的概念、基本任务和重要性，并提出了炼化总厂质量文化建设的基本途径。     

化工特殊作业、动火安全规范分析

化工产业中接触到腐蚀性,易燃易爆物质较多,设备、管线已发生腐蚀泄露,在维修作业时,不可避免的需要、施工、管线打开、动火、等作业,为减少和避免问题出现,对其特殊作业进行浅述、分析。     

Strategies,market concentration and hegemony in chemical parcel tanker shipping, 1960–1985

The article analyses the emergence of chemical shipping as a specialised shipping segment. In the 1950s and 1960s seaborne transport of chemicals was characterised by rapid technological development, based on the introduction of parcel tankers, which could carry chemicals in bulk. By the early 1970s two Norwegian companies had built up substantial market shares, but were challenged by financially stronger British companies. The article traces the background of the main companies involved in chemical shipping in the 1970s, by which stage market concentration was evident. We look at their entry into the market and their strategies. First mover advantages, determination to remain market leaders, fleet structure and timing go a long way to explaining why by the mid-1980s the Norwegians had managed to fend off the British challenge.     

化工机械设备的管理与维护探究

化工机械的使用强度大，若不注意维修和保养的话很容易造成设备的耗损，缩短设备的使用寿命。下文中就主要针对化工机械的维护与管理具体探讨了几项措施，以期能够为提高机械的使用效率、促进企业发展提供一些参考。     

A Pinch or a Pint? Evidence of Pesticide Overuse in Bangladesh

In a recent survey of 820 rice, potato, bean, eggplant, cabbage, sugarcane and mango farmers in Bangladesh, over 47% of farmers were found to be overusing pesticides. With only 4% of farmers formally trained in pesticide use or handling, and over 87% openly admitting to using little or no protective measures while applying pesticides, overuse is potentially a great threat to farmer health as well as the environment. Pesticide overuse was initially modelled using a three‐equation, trivariate probit framework with health effects and misperception of pesticide risk as endogenous dummy variables. Significance tests revealed that health and misperception were not endogenous to overuse, suggesting a bivariate probit model for health effects and misperception and a separate probit model for overuse. Health effects were found to be a function of the amount of pesticides used in production, nutritional status and income, while misperception of pesticide risk was determined by health impairments from pesticides and the toxicity of chemicals used. Pesticide overuse was significantly explained by variation in misperception, income, farm ownership, the toxicity of chemicals used, crop composition and geographical location. These results highlight the necessity for policymakers to design effective and targeted outreach programmes which deal specifically with pesticide risk, safe handling and averting behaviour. Ideally, the approach would be participatory in nature to address key informational gaps, as well as increasing: farmers’ awareness. The results also point to specific crops and locations experiencing a higher prevalence of overuse. Focusing efforts on these crops and geographical areas may have the most measurable effects on pesticide overuse.     

煤化学在洁净煤技术中的应用

本文对煤炭在洁净能源发展中的重要作用进行了阐述,并从煤化学的角度从气化、液化及一碳化学方面介绍了洁净煤技术的发展和应用,并对其前景进行了展望。     

精细化工实验教学改革实践

改革精细化工实验教学能调动学生学习积极性,提高学生动手操作能力、观察和解决问题的能力,培养学生创新意识和团结协作精神。文章论述了精细化工实验的教学内容、教学方法和考核方式,并提出相应改革方案。     

浅谈上海中职学校化工物流实训室建设——以上海石化工业学校物流实训室建设为例

上海化学工业的发展急需相关化工物流方面的人才培养,针对这个问题,中职院校已经展开有针对性的培训,而建设化工物流实训室成为关键。以上海石化工业学校为例,结合上海地区企业对化工物流人才的需求,主要从化工物流实训室建设的重要性、功能、原则和设想等方面进行论述。