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231.
The combustion of municipal solid waste leads to emissions containing high contents of heavy metals and organic pollutants. These residues, mainly collected by the electrostatic precipitator, have either to be deposited in special waste dumps or treated before being disposed in ordinary landfills. For the treatment or partial recycling of these residues the composition and the related variation are of primary importance. In this context a national inquiry for analysis data about fly ash composition was started. The results of this study, completed by own analytical results are presented in this paper. 相似文献
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Daniel Roland Denison 《组织行为杂志》1982,3(4):297-314
This paper compares employees perceptions of control in 20 manufacturing plants within one corporation. Four of the plants have incorporated self-managing groups as a part of their organizational design, while the other 16 plants have more traditional designs. Survey data from the 20 plants are compared and used to test a set of hypotheses derived from the literature on Sociotechnical systems. These analyses indicate that the workers and supervisors in the Sociotechnical plants have higher levels of perceived control than do their counterparts in the more traditional plants. Top and middle management respondents, how- ever, have similar perceptions of control in both the Sociotechnical and traditional plants. Discussion focuses on the impact of Sociotechnical design, the measurement of control, and future research issues in Sociotechnical design and self-managing work groups. 相似文献
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A prototype portable Fugitive Assessment Sampling Train (FAST), designed to obtain large samples of particulate emissions generated by sources whose configurations preclude sample collection before the diffusion of the emissions into the ambient atmosphere, has been successfully fabricated and tested. The prototype FAST utilizes a combination of commercially available and specially designed equipment to collect a 500 milligram particulate sample in an 8-hour period at locations downwind of most industrial fugitive sources. The particulate sample is separated into inhalable and respirable fractions and provides sufficient material for a complete Level 1 assessment including bioassays. A quantity of organic species larger than C6, sufficient for mass spectrometry analysis, is collected on a bed of adsorbent resin. The establishment of design criteria and operating parameters, selection and design of hardware components, and the fabrication and initial testing of the FAST are discussed. The results of calibration tests and an initial field trial are presented and a plan for additional development is outlined. 相似文献
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