传染病医院建筑给排水设计初探

本文针对传染病医院建筑给排水的设计进行研究.从实例出发,分析了传染病院的功能特点及不同类型传染病所采取的措施要点,从有利于洁净及防止二次污染、污水处理及消防给水设计等几个方面提出自己的看法及相应的技术措施.     

面向重大疫情防控的应急管理规划

为进一步推进疫情防控应急管理规划理论和相关制度的改进完善,采用国外先进作战任务规划方法探讨面向重大疫情的应急管理规划问题,从理论和实践相结合的角度论述面向疫情的应急防控管理规划基本任务、主要类型、规划业务要求、任务规划成果;提出疫情防控应急管理规划流程,并设计预先规划、应急规划和临机调控规划3种典型规划,构建覆盖国家、省、市县和乡镇/街道4个层级的疫情防控应急管理规划体系。结果表明:基于作战任务规划的应急管理规划流程和体系科学性更强、适用性更高,对应急管理规划、应急预案与防疫预案的制定有参考价值。     

某铁路隧道作业场所职业危害风险控制效果评价

为了解铁路隧道作业场所职业病危害特征,评估其职业病危害风险控制效果,采用现场调查与职业病危害因素检测相结合的方法,对某铁路隧道作业场所职业病危害特征进行调查,采用职业病危害风险指数评估模型进行控制效果评估。结果表明,该铁路隧道作业场所职业危害因素主要包括生产过程中职业病危害、劳动过程中危害和生产环境中危害;主要职业病危害因素为电焊烟尘、矽尘、NO、NO2、CO、CO2、噪声、振动、高湿等;隧道内工务、电务、供电三大线路作业场所的线路维护人员接触的噪声均为轻中度危害,氮氧化物(NO、NO2)为轻度危害,接触的CO为中高度危害,线路维护人员矽尘作业岗位为轻中高度危害,易导致职业病损的发生。提出应重点监控该铁路隧道接触噪声、CO和矽尘的作业岗位,采取科学综合防控措施,改善作业环境质量,强化个人防护。     

Commodity booms and their impacts on the Western Australian economy: The iron ore case

Western Australia is a resource-rich province. Since the 1890s, resources booms have played a key role in the development of the state's economy. In the last few years, Western Australia's resources industry has continued to enjoy exceptional conditions created by strong international demand for commodities. This paper aims to examine the likely impact of this commodity boom in the iron ore sector on the Western Australian economy, using a general equilibrium approach. The modeling results indicate that the Western Australian economy will benefit from the expansion in iron ore exports and investment in terms of rising consumption and employment, although at the industry level there will be losers as well as winners.     

Geochemistry of high arsenic groundwater in Chia-Nan plain, Southwestern Taiwan: possible sources and reactive transport of arsenic

Major ion, trace element, and stable isotope analyses were performed on groundwater samples collected during November 2005 and 2006 in Chia-Nan plain of southwestern Taiwan to examine As mobilization in aquifers. The high concentrations of As, Fe and Mn in the groundwater is consistent with low Eh values (under moderately reduced state). Moreover, the observed Na/Cl and SO(4)/Cl molar ratios in groundwater demonstrate the influence of seawater intrusion. Seawater intrusion could provide required electron acceptors (i.e., SO(4)) for bacterial sulfate reduction and promote reducing conditions that are favorable for As mobilization. The concurrent increases in the concentrations of Fe and Mn from 2005 to 2006 may be caused by bacterial Fe(III) and Mn(IV) reduction. Geochemical modeling demonstrate that As(III) is the dominant As species and the presence of Fe-bearing carbonates, sulfides, and oxide phases may locally act as potential sinks for As. Mud volcano fluids were also collected and analyzed to assess the possible source of As in the Chia-Nan plain groundwater. The oxygen and hydrogen isotopic signatures indicate that the As-rich mud volcano fluids may have been modified by chemical exchange with (18)O-rich crustal rocks and possibly originated from mixing of deep brines with circulating meteoric water. Thus As in the Chia-Nan plain groundwater may have been evolved from deep crustal fluids or rock sources. The hydrogeochemistry and widespread As enrichment in groundwater of Chia-Nan plain result from multiple processes, e.g., de-watering of deep crustal fluids, seawater intrusion, and biogeochemical cycling of Fe, As, and S in alluvial sediments.     

雷州桉树枝梢弯曲生理病与微肥施用效果研究初报

浅海沉积物和花岗岩发育的砖红壤,连续种枪桉树后,有些桉树品种出现的枝梢弯曲生理病与缺乏微量元素有关,施用微肥能防止枝梢弯曲生理病的发生,或对枝梢弯曲生理病有抑制和矫正作用,从而改善桉树中长状况,提高桉树生长量,使桉树能够持续速生丰产。     

沼气发酵液对西瓜苯丙氨酸解氨酶的诱导

为了研究沼气发酵液抑制西瓜枯萎病（ Ｆｕｓａｒｉｕｍ ｏｘｙｓｐｏｒｕｍ ｆ．ｓｐ ． ｎｉｖｅｕｍ） 的作用机理,使用不同来源和不同浓度的沼气发酵液处理西瓜植株,发现处理的植株体内的苯丙氨酸解氨酶（ Ｐ Ａ Ｌ） 的活性有显著升高,不同来源的沼气发酵液对植株的 Ｐ Ａ Ｌ活性都有不同程度的增加,并与黄腐酸的含量有一定相关性．用黄腐酸处理西瓜植株也可以诱导 Ｐ Ａ Ｌ 的产生     

基于社会燃烧理论的突发公共卫生事件网络情绪传播模型

为有效引导和管控突发公共卫生事件网络舆情,考虑社会相关性和网络群体间情绪状态转移的不确定性,基于社会燃烧理论研究突发公共卫生事件网络情绪传播机制.首先基于社会燃烧理论分析网络用户群体的社会影响因素,建立未燃-阴燃-燃烧-抑燃-稳定(UDBFS)网络情绪传播模型和考虑干预措施的网络情绪传播模型;然后以新冠肺炎(COVID...     

新冠疫情期间无锡市环境空气质量分析

通过对无锡市区环境空气污染物的连续监测,对新冠疫情期间环境空气质量进行研究分析.结果表明,2月疫情期间,无锡市环境空气质量同比与环比均有明显好转,AQI指数在24～80,均为优良天.这可能与全社会生产、生活、活动有极大变动有关,可指导空气污染防治工作的努力方向.从单项指标看,除O3以外的其他5项指标均有不同程度的好转....     

Foot and mouth disease and british agriculture: ethics in a crisis

The 2001 Foot and Mouth Diseaseoutbreak in the UK has had widespread adverseeffects – on the farming community, thetourist industry, millions of farm animals, theenvironment, and citizens' quality of life.This report summarizes the course of theepidemic and then questions the ethicalvalidity of the procedure chosen to eradicatethe disease, namely, the slaughter of millionsof animals. It is argued that the utilitarianbasis of the mass slaughter program isunjustified even in its own terms, and thatrespect for certain deontological principlesmerits increased attention in public policy.The long-term interests of UK citizens, theviability of British farming, and theconservation of the countryside all depend onurgent, critical decisions that should beinformed by a broader conception of the role ofethics in agriculture.