住宅类房地产项目环境影响技术评估探讨

环境影响技术评估是建设项目环境影响评价文件审批前的一个重要环节,结合住宅类房地产项目的特点,提出对该类项目环境影响评价文件进行技术审查的重点应包括项目选址建设与相关法律、法规、产业政策及规划的相符性,施工期环境影响评价、营运期水环境影响评价,项目内、外环境影响评价等方面,并就该类项目环境影响评价中存在的常见问题进行了探讨,以期为住宅类房地产项目环境影响评价和环境影响评价文件审批提供技术指引和决策参考。     

超纤革制造类项目有机废气环评要点浅析

超纤革制造类项目的有机废气排放是环境影响评价关注的重点内容之一,本论文总结了超纤革制造类项目环境影响评价中有机废气污染和治理的要点,重点关注超纤革制造类项目工艺流程、废气源强核算、污染治理措施的可行性。为超纤革制造类项目的环境影响评价工作提供参考,也为环境保护行政主管部门的审批与管理提供科学依据。     

印染项目环境影响评价关注要点分析

本文以印染项目为例,从相符性、标准以及做好衔接等方面讨论了该类项目环境影响评价应着重关注的环节和内容,对进一步做好印染项目环境影响评价工作积极的现实意义。     

镍铁蓄电池项目环境影响评价中工程分析要点

对镍铁蓄电池项目环境影响评价中工程分析的主要内容进行总结,对项目工艺流程和产排污环节、平衡分析、污染防治措施等工程分析要点进行论述,为该类项目环境影响评价工作提供参考。     

房地产类项目环评中新问题探讨

在分析了环境影响评价作用及房地产类项目的类型、特点的基础上,提出在编写房地产类项目环评报告中除按国家环境影响评价导则要求进行外,还需要重点分析评价项目周边环境对项目产生的潜在影响、评价工作中规划协调性的分析及房地产环评中生态环境影响评价的分析思路.     

编制城市建设绿色建筑类项目环评探究

本文针对房地产类项目,根据在环境影响评价工作中的实际经验,就实际工作中的环境影响评价要点和环境影响评价应关注的问题总结了该类环评工作中应注意的一些问题。     

浅析管道类建设项目环境影响评价工作思路和重点

为了更好的做好管道类建设项目的环境影响评价工序,本文介绍了管道类建设项目的类型,对工程内容及规模、项目选址、工程污染、环境影响等工作思路进行了详细的介绍,同时对管道类项目环境影响评价工作重点穿越方式、环境风险、生态影响等进行了简要的分析,介绍了不同穿越方式的内容和特点,分析了环境风险产生的原因,说明了生态影响的主要内容。     

房地产开发建设项目环境影响分析

为更好地编制房地产开发建设项目的环境影响评价文件,分析了该类项目的主要环境影响问题及原因,提出环境保护对策与建议.     

当前房地产开发项目环境评估工作要点分析

结合房地产开发项目的自身特点,笔者就房地产开发项目环境评估工作要点进行较为详细的介绍,以期为住宅类房地产项目环境影响评价起到一定参考作用。     

钢结构件生产加工项目环境影响评价技术浅议

介绍了钢结构件生产加工项目环境影响评价中工程分析、污染防治措施以及清洁生产等方面的环境影响评价要点,以期为同类项目的环境影响评价、污染治理和环境管理提供参考。     

云南寻甸中全新世降温事件的石笋同位素记录

通过对寻甸仙人洞X1石笋进行高精度的TIMS-U系测年和碳、氧同位素分析,建立了寻甸地区8000aB.P.以来高分辨率的古气候变化时间序列。研究结果表明,寻甸地区8000aB.P.以来石笋记录的古气候环境变化,大致可分为3个气候期:中全新世8000—5560aB.P.为气候适宜期,显示印度季风由强盛逐渐减弱的趋势,气候温暖湿润期,与太阳辐射增强引起的北半球季风环流加强有关;中全新世中晚期5560—4400aB.P.为季风转变期,显示印度季风减弱并快速退出、萎缩,东亚冬季风加强并快速推进,太阳辐射强度减弱,气候为干冷期;中全新世晚期4400—2000aB.P.,显示东亚冬季风逐渐减弱,东亚夏季风有所增加,气温有所回升,但气候变化的波动大。研究还表明,全新世以来石笋记录的气候变化非常不稳定,在千年尺度上表现为台阶状,在短尺度———百年尺度上呈锯齿状波动。石笋记录的突发性气候波动事件,与冰芯记录极为相似,反映低纬度地区石笋记录的季风气候与高纬度及北极地区的气候具有极好的相关性,这对于认识现代气候系统变化以及对未来十年、百年尺度的气候预测具有重要的科学意义。     

生物膜A/O法处理PTA废水的试验研究

在含两级Ａ／Ｏ和生物炭的连续运行试验装置上处理ＰＴＡ废水,结果表明：进水ＣＯＤｃｒ为１１０１ｍｇ／Ｌ,ＨＲＴ为４０ｈ,Ｏ２段和生物炭出水中残余ＣＯＤｃｒ分别为８２ｍｇ／Ｌ和５５ｍｇ／Ｌ,相应ＣＯＤｃｒ去除率分别为９２％和９５％;进水ＣＯＤｃｒ为１１１２ｍｇ／Ｌ,ＨＲＴ为３２ｈ,Ｏ２段和生物炭出水中残余ＣＯＤｃｒ分别为８６ｍｇ／Ｌ和６４ｍｇ／Ｌ,其去除率分别为９２％和９５％;在上述试验条件下刀;段ＴＡ去除率均为９３％。     

Split notochord syndrome variant: prenatal findings and neonatal management

Spilt notochord syndrome is an extremely rare form of spinal dysraphism characterized by a complete cleft of the spine and a persistent communication between endoderm and ectoderm. A variant of split notochord syndrome was diagnosed in a 25-week-old fetus showing a prolapsed congenital colostomy and a spinal cystic lesion. The final diagnosis included protruding colon segment, imperforate anus with a rectourethral fistula and lipomyelomeningocele. The ultrasound features of the condition and the post-natal management are discussed. The neonate was successfully treated with a posterior sagittal anorectoplasty, while the lipomyelomeningocele was resected at a later stage. Copyright © 2005 John Wiley & Sons, Ltd.     

钢铁厂铁鳞、铁红基本物性及还原性研究

对钢铁厂铁鳞、铁红的基本物化性能和还原性能进行了研究。结果表明：粒度较粗、全铁较高铁鳞的还原性较好，适于作为优质海绵铁的原料。粒度极细、全铁高且杂质含量很低的铁红还原性也较好，适于作还原铁粉生产的原料。     

用氟污染桑叶饲养蚕对干茧和丝质量影响的研究

研究表明,桑叶氟污染较重时,干茧和丝的质量受到危害,茧层重、粒茧量和公升茧粒等6项指标均显示干茧质量明显下降;在14项丝质量指标中除清洁度和强伸力外,均有明显氟危害影响.     

A new azhdarchoid pterosaur from the Lower Cretaceous of China and its implications for pterosaur phylogeny and evolution

Toothless pterosaurs played a key role in broadening the taxonomic, morphological and ecological diversity of Cretaceous pterosaurs. Here we report a complete, articulated skeleton of a 1.4-m-wingspan pterosaur from the Lower Cretaceous Jiufotang Formation of Liaoning Province, China which is identified as a new genus and species, Shenzhoupterus chaoyangensis gen. et sp. nov. The new taxon is edentulous, with a relatively large skull and a remarkably large, tall nasoantorbital fenestra that extends well above the main part of the braincase. Phylogenetic analysis shows that Shenzhoupterus gen. nov. belongs in a distinct clade of azhdarchoid pterosaurs, formally recognised here as a new family, Chaoyangopteridae, that also includes Chaoyangopterus, Jidapterus and Eoazhdarcho from the Jiufotang Formation and Eopteranodon from the Yixian Formation. These new data clarify recent confusion surrounding the systematics of these Lower Cretaceous taxa and provide new insights into the evolutionary history of pterosaurs.     

石羊河流域1959年至2008年风速变化特征分析

利用线性拟合、Mann—Kendall方法、小波分析对石羊河流域五个测站空间平均的近50年来的逐日风速资料进行了倾向、周期、突变等特性分析。研究结果表明：1959年至2008年间,整个石羊河流域风速呈减小趋势,变化率约为-0．004m／（s．a）．而上游风速呈现明显的上升趋势。四个季节中冬季风速降低速度最大,而夏季风速呈现上升趋势。风速的长期变化还具有一定的突变性,年平均风速在1988年出现了由高到低的突变,表明风速开始下降。复值Morlet小波分析的结果显示,风速变化存在6a、13a、19a、25a四个峰值。其中19a的时间尺度为第一主周期。     

QUICKScan as a quick and participatory methodology for problem identification and scoping in policy processes

Policy making is required in cases in which a public good needs to be either maintained or created, and private or civil initiatives cannot deal alone with this. Policy making thus starts with a phase of problem identification and determining whether there is a problem that needs to be dealt with. Rapidly evolving contexts exert influence on policy makers who have to take decisions much faster and more accurately than in the past, also facing greater complexity. There is a need for a method that lowers the lead time of the exploratory phase of the policy cycle. At the same time the method should create a joint understanding of the most important interactions. This paper proposes QUICKScan, a method, process and spatially explicit tool, to jointly scope policy problems in a participatory setting, investigate the most important interactions and feedbacks and assesses the state of knowledge and data of relevance to the problem. QUICKScan uses strongly moderated participatory workshops bringing together a wide range of stakeholders relevant to the policy issue. These moderated workshops jointly build an expert system in a spatially explicit tool using functionality of bayesian belief networks, python programming, simple map algebra and knowledge matrices, with a strong focus on visualization of results. QUICKScan has been applied in 70 different applications in a range of different policy contexts, stakeholders and physical locations. Through these applications participants were able to internalize the knowledge that was usually handed to them in briefs and reports, to develop a joint understanding of the main interactions and their link to impacts and to develop a problem statement and solution space in a reduced lead time. Ultimately, QUICKScan demonstrates another role of science, not solely as a knowledge production, but also facilitating the knowledge consumption.     

油田化学添加剂对污水处理系统腐蚀行为的影响

目的明确净水剂、絮凝剂、助凝剂、缓蚀剂对污水处理系统腐蚀行为的作用效果。方法通过工艺流程分析、腐蚀形貌观察、腐蚀产物成分分析、腐蚀失重测试等手段,分析污水处理系统腐蚀原因,考察油田化学添加剂对SSF污水处理系统腐蚀行为的影响。结果输送介质中溶解的二氧化碳、高浓度氯离子、氧是导致SSF净化装置内腐蚀的主要原因。分别添加质量浓度为150、0.3、60 mg/L的净水剂、絮凝剂、助凝剂后,动态腐蚀速率可从1.8544 mm/a降到0.6674、0.8627、0.3530 mm/a,静态腐蚀速率可从1.2515 mm/a降到0.9565、0.9474、0.6256 mm/a。添加160 mg/L缓蚀剂,动态腐蚀速率从1.8544 mm/a降低到0.0822 mm/a,静态腐蚀速率从1.2515 mm/a降低到0.0238 mm/a。同时添加净水剂、絮凝剂、助凝剂三种药剂,动态腐蚀速率为0.7672 mm/a,静态腐蚀速率为0.8742 mm/a;同时添加净水剂、絮凝剂、助凝剂、缓蚀剂四种药剂,动态腐蚀速率为0.3069 mm/a,静态腐蚀速率为0.0263 mm/a。结论添加缓蚀剂能有效控制SSF污水处理系统内腐蚀。污水处理用净水剂、絮凝剂、助凝剂对腐蚀有一定抑制作用。在动态条件下,净水剂、絮凝剂、助凝剂降低了缓蚀剂的缓蚀效果,在静态条件下,三种添加剂对缓蚀剂的缓蚀效果影响较小。     

粘胶化纤厂废气治理试验

采用ＴＦ－ＴＡ工艺治理粘胶化纤厂废气。先以ＴＦ脱硫液选择脱除ＨＺＳ,再以ＴＡ液体脱除ＣＳ２。Ｈ２Ｓ脱除和再生能一步完成,脱除率９８％以上,其表达ηＨ２ｓ＝９９．５＋４．７１×１０－４ｘ－３．６８×１０－７ｘ２。ＣＳ２脱除率在气液比２００—３００时达８０％─９０％,其表达式：ηＣＳ２＝９８．９－１．３２×１０－３ｘ—２．００×１０－４ｘ２。文中还讨论了粘胶化纤厂废气总体治理意见。