On Finding Solutions to Ethical Problems in Agriculture

A distinction should be made betweentwo types of ethical problems. A Type I ethicalproblem is one in which there is no consensusas to what is ethical. A Type II ethicalproblem is one in which there is a consensus asto what is ethical, but incentives exist forindividuals to behave unethically. Type Iethical problems are resolved by making,challenging, and reasoning through moralarguments. Type II ethical problems areresolved by changing the institutionalenvironment so that people do not haveincentives to behave unethically. Type Isolutions, however, will not be effective insolving Type II problems. Examples inagriculture and elsewhere show howdistinguishing between Type I and Type IIethical problems will help in theidentification of solutions to ethical issuesin agriculture.     

碳酸钾-二乙烯三胺复合溶液吸收烟气中CO2实验研究

热钾碱溶液在工业脱除二氧化碳中已获得较广泛的应用,但存在吸收速率差、再生负荷高等缺点-开发新型热钾碱溶液成为目前研究热点.采用搅拌实验装置,研究碳酸钾溶液及不同配比的碳酸钾-二乙烯三胺(DETA)复合溶液对烟道气中二氧化碳的吸收和解吸性能,揭示了吸收速率、吸收容量和酸碱度与时间之间的内在联系;对CO2初始逸出温度,试液...     

添加液促进电动法修复苯酚污染土壤的模拟研究

模拟研究结果表明,电动技术能有效地修复被苯酚污染的砂土。在电场强度为2V／cm的情况下,苯酚在污染砂土中向阳极迁移,富集发生在距离阳极8cm处。在阴极槽添加的LAs浓度为0．046mol·L^-1时,苯酚在砂土中迁移的富集浓度可以达到未添加LAS时的2．43倍。向阳极槽添加0．1mol·L^-1 NaOH溶液与向阴极槽添加0．1mol·L^-1柠檬酸溶液都有利于苯酚的富集,且向阳极槽添加NaOH溶液更有利于苯酚的富集。     

苯酚贮备液稳定性的探讨

测定了长时间保存的１．００００ｇ／Ｌ苯酚贮备液的浓度和标样。结果表明此浓度的苯酚贮备液可在３年内保持稳定。     

废水资源化的问题与出路

从可持续发展的观点出发 ,废水经适当处理可作为资源加以利用 ,废水资源化对缓解水危机和实现水资源的可持续利用有很重要的意义。基于此 ,本文总结了国内外废水资源化的现状 ,结合实例分析了废水资源化中存在的问题 ,并提出了相应的解决措施     

Experimental study of effectiveness of four radon mitigation solutions, based on underground depressurization, tested in prototype housing built in a high radon area in Spain

The present paper discusses the results of an empirical study of four approaches to reducing indoor radon concentrations based on depressurization techniques in underground sumps. The experiments were conducted in prototype housing built in an area of Spain where the average radon concentration at a depth of 1 m is 250 kBq m⁻³.Sump effectiveness was analysed in two locations: underneath the basement, which involved cutting openings into the foundation, ground storey and roof slabs, and outside the basement walls, which entailed digging a pit alongside the building exterior. The effectiveness of both sumps was likewise tested with passive and forced ventilation methods.The systems proved to be highly efficient, lowering radon levels by 91-99%, except in the solution involving passive ventilation and the outside sump, where radon levels were reduced by 53-55%. At wind speeds of over 8 m/s, however, passive ventilation across an outside sump lowered radon levels by 95% due to a Venturi effect induced drop in pressure.     

DB44/T 578-2009测试中常见问题及对策

本文对卫星定位汽车行驶记录仪按DB44/T578-2009测试时常见不合格问题及对策进行简要的分析,解决这些问题对设计和测试卫星定位汽车行驶记录仪是很有必要的。     

尿素/三乙醇胺吸收烟气NO_x的实验研究

以尿素作为吸收液,与NOx反应生成N2和CO2,脱除烟气中的氮氧化物。以一套双级串连的填料塔为主体反应器,分别对气速、液气比、反应物浓度、添加剂浓度和反应温度等参数对尿素溶液吸收NOx反应的影响进行了实验研究,获得了优化实验工况,研究结果显示,在气速为0.1 m/s、液气比为16 L/m3、三乙醇胺为0.01%（质量比）、尿素浓度为13%（质量比）工况下,反应温度为30~70℃,脱硝总效率可达50%以上,且随着NOx体积分数增加而提高。     

电网建设项目竣工环保验收的常见问题及解决方案

电网项目属于非污染型生态项目,具有该类型项目特有的影响因子单一、项目涉及范围广及环境敏感点分布不均等特点。该类项目竣工环保验收中存在6种主要问题,针对验收率、验收监测、公众参与等方面,通过制定规范、加强管理、落实环保治理措施等层面,给出了相对的解决方案。通过方案的实施,主要常见问题可得到解决或改善。     

由秦皇岛开发区第一次全国污染源普查谈污染源普查的质量保证

结合工业污染源普查的基层工作经历,分析污染源普查的特点和要求,对污染源普查的工作程序、工作方法等进行了探索性研究。针对实际工作中存在的问题提出解决方案,并在清查、普查环节提出了重点工作内容和工作方式的改进。