甲醛法在测定固定污染源排放SO2浓度中的应用

对用注射器采样甲醛法测定高浓度ＳＯ２样气精密度、准确度，采样效率，样品的稳定性进行了研究，并应用于燃煤，燃油锅炉排气中ＳＯ２浓度的测定，同时与碘量法结果进行比较和评价，表明注射器采样甲醛法测定了ＳＯ２基本可行。     

绵阳大气中二氧化硫浓度升高的原因探讨

针对1990年和1991年绵阳市SO_2浓度升高,尤其是1990年和1991年元月监测的SO_2浓度值更高。经研究发现监测采样时的气象条件对污染物测定值产生重要影响。     

基于CDIO的安全工程课程教学改革研究——以《工业通风》为例

为培养符合新工科人才能力要求、工程教育专业认证人才培养要求的安全工程人才,根据CDIO理念以及工业通风课程特征,论文提出以通风系统设计过程为导向的工业通风模块式教学模式,形成了6个基本能力训练项目和1个综合能力训练项目为核心的能力培养体系,提出了能力达成的教学方法以及着重能力培养过程评价的课程考核方法。     

二氧化硫专项清洁生产审核研究

按国家关于清洁生产审核的具体环保要求,针对二氧化硫产出量与总量控制的相关标准,提出关于二氧化硫专项清洁生产审核研究的具体思路.根据对哈尔滨某集团有限公司SO2专项清洁生产审核,通过组织筹划、预评估,确定二氧化硫作为清洁生产审核的重点并制定清洁生产目标,评估过程中要依据具体的国家环保要求,对于确定的方案进行环境-经济-社会效益的分析.共提出10个清洁生产方案,其中无/低费方案8个,中/高费方案2个.     

Morphometric variables of honeybees Apis mellifera used in ecotypes characterization in Argentina

The honeybee Apis mellifera has evolved in different environments and has developed different ecotypes. The objective of the Honeybee Genetic program in Argentina (MeGA) is to select honeybees adapted to different regions in the country using an important number of colonies as base population. In the last years, morphometric analyses are being incorporated into the Program as a tool for characterization of genetic materials; this fact has motivated the present work. A random sample of honeybee workers (250) was taken from 30 colonies situated in different regions in the country. The proboscis, right hind leg, right forewing and hind wing were placed on a slide and the following variables were measured: length and width of forewing and hind wing, different angles and length of wing veins, the length of the tibia, femur and metatarsi, the width of the metatarsi and the length of the proboscis. Thirty morphometrical variables were analyzed and the distribution and relation between them were recorded.     

A chemical residue survey in relation to the 1930 spruce budworm spray program in New Brunswick (Canada)

Abstract

This paper describes the results from a pesticide residue survey conducted in relation to the 1980 spraying of insecticides in New Brunswick (Canada) to preserve the coniferous forest from an on‐going spruce buciworm infestation. A total of 465 water and air samples were collected from 12 sites throughout the Province.

In water, fenitrothion was usually detected at about the same time that spraying occurred in the immediate area of the sites. The maximum that was ever detected was 2 0.0 ppb and persistence was usually United to a few days except in a small pond where fenitrothion was detected for a total of 18 consecutive days. Aminofenitrothion was also detected at a maximum of 8.0 ppb.

Fenitrothion was only detected occasionally in air samples the maximum being 1.2 ng/dm³. However, aminofenitrothion was present in several air samples at c. maximum of 12.0 ng/dm ³.     

新兴中等工业城市的防洪问题：顺德市防洪预案编制事例

以顺德市编制防洪预案为例，阐明发展中的工业城市面临城市化、市场经济化新局势，所需理顺的一些关系，诸如：防洪保护对象、各部门的防洪职能、防洪队伍及物资的组织调度等等。     

Determinants of coverage in Community‐based Therapeutic Care programmes: towards a joint quantitative and qualitative analysis

One of the most important elements behind the success of Community‐based Therapeutic Care (CTC) programmes for the treatment of severe acute malnutrition has been their ability to achieve high levels of coverage. In CTC, coverage is measured using the Centric System Area Sampling (CSAS) method, which provides accurate and reliable estimates of programme coverage as well as information on the primary reasons for non‐attendance. Another important feature of CTC programmes is their use of socio‐cultural assessments to determine potential barriers to access and to develop context‐specific responses. By analysing data on non‐attendance provided by CSAS surveys, in conjunction with data from socio‐cultural assessments, it is possible to identify common factors responsible for failures in programme coverage. This paper focuses on an analysis of data from 12 CTC programmes across five African countries. It pinpoints three common factors (distance to sites, community awareness of the programme, and the way in which rejections are handled at the sites) that, together, account for approximately 75 per cent of non‐attendance.     

宁海发电厂脱硫除雾器运行优化及防堵措施

分析了国华宁海发电厂600MW机组WFGD系统除雾器的应用环境及结构原理，提出了运行过程中除雾器优化方式以及防堵塞措施，为其他火电厂湿法脱硫系统解决同类问题提供参考。     

Oxidant denuder sampling for analysis of polycyclic aromatic hydrocarbons and their oxygenated derivates in ambient aerosol: evaluation of sampling artefact

The concentrations of some polycyclic aromatic hydrocarbons (PAH) and oxygenated PAH (O-PAH) can be changed by oxidation reactions during sampling. This can lead to an over- or underestimation of the corresponding adverse health effects. The aim of this study was the evaluation of these sampling artefacts. The potential of using an oxidant denuder was shown by parallel low-volume sampling with and without MnO₂ ozone denuder. Twenty-three PAH and 11 O-PAH in ambient air were analysed, both in the vapour and particulate phase. The denuder was proven to be highly efficient for stripping ozone from air while causing no significant particle losses. In general, the concentrations of 5- to 7-ring PAH, which are predominantly associated with particles, were underestimated in non-denuded samples. The highest losses due to reaction with ozone and other atmospheric oxidants were observed for benzo[a]pyrene and perylene. Concurrently, the concentrations of most of the mainly particle-associated 4- to 5-ring O-PAH were higher in the non-denuded samples. The denuder did not only remove ozone, moreover other gaseous species such as more volatile PAH and O-PAH were partially oxidized on the catalytic surface, too. Degradation of PAH and concurrent degradation/formation reactions of O-PAH occurred. The corresponding reactivities of selected PAH and O-PAH are discussed.