社会服务类项目环评中的景观评价初探

叙述了思茅目前开展景观影响评价的情况和意义,提出了景观影响评价的基本概念、步骤、内容和方法,介绍了一种较为简便、实用的用于景观影响评价的定量方法。     

A 1 and 6 month follow-up of prenatal diagnosis patients who lost pregnancies

This paper reports results of an exploratory study of prenatal diagnosis patients who experienced voluntary terminations of pregnancy following the detection of an abnormality or spontaneous miscarriages. The 121 participants were part of the national collaborative Chorionic Villus Sampling and Amniocentesis Study. They completed semi-structured telephone interviews and mailed questionnaires at 1 month and 6 months after the pregnancy losses. Scores on the Profile of Mood States showed that mood levels improved significantly over time. However, there were some declines in loss-related support from partners and others. The persisting distress and difficulties of a minority highlight the variability in women's responses to pregnancy losses. Women who lost pregnancies later in gestation, showed the greatest mood disturbances at initial assessments, used professional mental health assistance after the loss, or reported less satisfactory loss-related support from significant others showed the greatest levels of mood disturbance at the six-month assessment. Follow-up contacts with patients who lose pregnancies should be used to inform women about the variation in possible grief reactions, to assess the extent of support the women are receiving from their partners and significant others, and to provide additional follow-up or referral of those experiencing the greatest distress.     

环境影响评价中的"风险评价"实例

环境风险评价在当今环境影响评价中逐渐引起重视，通过对年产30万t磷酸及年产60万t磷铵项目中设计的磷石膏渣场进行的风险评价实例，运用风险评价方法进行了事故分析，并预测了事故发生的风险及后果，提出减缓措施，为项目安全运行提供一定理论依据，同时可为类似项目的风险评价提供参考。     

全封闭垃圾焚烧空气污染影响与控制措施

以大坦沙资源电厂为研究对象 ,通过对全封闭垃圾燃烧、污染物去除、废气高空排放工艺流程分析以及运用列举法和大气扩散数学模式对全封闭垃圾焚烧厂的污染影响与控制进行了探究 ,提出了有关垃圾焚烧空气污染防治对策和建议 ,为垃圾焚烧处理提供参考     

Eco-environmental susceptibility in Shangyi County,Northern Hebei Province,China

In this paper,the eco-environmental susceptibility of Shangyi County,Northern Hebei Province of China has been calculated by using the weighted-addition method based on expert's giving a mark to each influencing factor according to their knowledge on the influence of all the factors on eco-environmental susceptibility.The eco-environmental classification and distribution map were reached based on the above results,its difference is mainly result from the physical conditions and human activity,however the value of eco-environmental susceptibility is only a relative index which can not completely reflect the quality of eco-environment.This work provided a basis for controlling the further development of desertification.     

汉江水华的影响因素分析及控制方法初探

从分析汉江水华的状况、影响因素及其水华发生的参数阈值着手,初步探讨了汉江水华的控制方法。     

农作物品种单一化的影响

绿色革命是人与自然关系的产物--集约型农业与高产农业的一大壮举.但绿色革命带来的负面影响也是巨大的,主要是农作物品种单一化引起的农业种质资源的减少和农业生态系统的脆弱.本文就绿色革命的这一负面影响进行阐述并提出对策.     

建设项目实施过程中的可行性研究与环境影响评价

作者根据多年的工作实践，分析了目前建设项目可行性研究与环境影响评价工作中存在的一些问题。提出了编写环境影响评价报告时如何有效地利用建设项目的可行性研究报告文本，以及在没有可行性研究报告的情况下怎样使环境影响评价报告能够准确地反映建设项目的环境问题，进而保证环境影响报告书的质量。总之，恰当处理这两者之间的关系，保证建设项目在建设期与运营期降低与防止建设项目对周边环境影响是本文的主要目的之一。     

环境影响评价有效性评估理论研究

结合系统工程理论，初步建立环境影响评价有效性评估的概念方法和理论体系，据此对我国环境影响评价有效性进行初步评估，并提出进一步提高我国环境影响评价有效性的对策及建议。     

使用VB.NET绘制大气污染物浓度分布等值曲线

大气污染物浓度分布等值曲线的绘制是大气环境影响预测的一项重要工作.采用优化的黑白域矩形网格序列法,结合VB.NET环境下Metafile对象提供的矢量图形绘制新技术,可在一次数据扫描过程中同时实现黑白域划分、黑域边界提取、等值点拟合计算及序列化、等值线绘制等操作,计算量小、效率高、代码量少,可绘制任意浓度等值线,且等值线不相切.