共查询到20条相似文献,搜索用时 93 毫秒
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生物医药实验室有害试剂使用的防护及废弃物的处理 总被引:2,自引:0,他引:2
生物医药实验室在教学、科研过程中广泛使用各种生物制品和有机溶剂,其中许多化学试剂具有毒性、腐蚀性、易燃性、致癌性、致畸性,这些物质及其废弃物对人体和周围环境都具有不同程度的危害。如果没有相应处理办法和控制措施,这些有毒有害物质则可能引发火灾,而泄漏、排放会造成更广泛的环境污染问题。实验室对于医学废物的处理要遵守国家标准,在制定和在进行生物危害性废弃物的处理、运输和废弃之前,必须参考最新版的国家相关文件。本文针对有害化学试剂使用中的防护及使用后废物的处理进行探讨,旨在为实验试剂的安全使用,控制废弃物的污染,努力探索新方法以解决实验室的安全防护和污染问题 相似文献
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综述了特种加工,如电火花加工,电解加工,激光加工等加工过程中可能产生的有害有毒气体,废弃物,电磁辐射等危害因素,并列举了相应的防治措施,对电气安全,防火防焊等极为重要的安全生产问题,进行了专门论述,提出了预防措施,对保护环境,保证安全生产有一定的指导作用。 相似文献
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《机械工业标准化与质量》2006,(4):28-28
循环经济的概念产生于20世纪90年代后期,它是相对于传统经济发展模式而言的,代表了新的发展模式和发展趋势。循环经济是一种建立在资源回收和循环再利用基础上的经济发展模式。按照自然生态系统中物质循环共生的原理来设计生产体系,将一个企业的废弃物或副产品,用作另一个企业的原料,通过废弃物交换和使用将不同企业联系在一起,形成”自然资源→产品→资源再生利用”的物质循环过程,使生产和消费过程中投入的自然资源最少,将人类生产和生活活动对环境的危害或破坏降低到最小程度。 相似文献
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Antsiferov S. I. Alfimova N. I. Bondarenko N. G. Trofimenko Yu. V. 《Russian Engineering Research》2022,42(2):192-195
Russian Engineering Research - The processing of gypsum-bearing industrial waste is of great importance since its proliferation consumes valuable land and poses an environmental hazard. However,... 相似文献
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滚筒是汽车后桥检测平台的路面模拟部件,利用ANSYS对某检测平台的滚筒设计方案进行了有限元分析,并给出了改进方案,为该部件的设计提供参考.分析结果既可以避免由于结构设计不合理而造成的危险情况的发生,又避免了原材料的浪费. 相似文献
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Dr S. H. Yeo K. G. Neo H. C. Tan 《The International Journal of Advanced Manufacturing Technology》1998,14(5):376-384
This paper discusses the health hazards faced in a company which produces printed paper packaging. The analysis is based on three main production processes, namely, printing, plate-making and washing. The components in the emissions of these processes are broken down into their chemical compositions and given a hazard rating. The analytic hierarchy process in the health hazard scoring system is introduced to evaluate the level of hazard of each process to the environment. When the hazard level encountered in each process is known, the necessary precautions and measures can be taken. 相似文献
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Yusen He Andrew Kusiak Tinghui Ouyang Wei Teng 《Journal of Mechanical Science and Technology》2017,31(6):2747-2757
Exhaust valve is an essential part of truck engine. Dynamic and unpredictable thermal and mechanical stress cause valves to wear prematurely, leading to increased maintenance costs. In this paper, a data-driven approach is presented to predict failures of exhaust valves of truck engines. The failure datasets of exhaust valves recorded from 13 truck engines are divided into three groups: First failure, second failure, and third or more failures. The Kaplan-Meier estimator is selected to express the distribution of survival probability of the three groups of failures. In order to find the hazard indicator, two data-mining algorithms, a wrapper and a boosting tree are applied to select parameters highly relevant to the hazard rate. A Cox proportional hazard model is used to conduct regression analysis on each selected parameter. Based on the derived hazard ratio, the time-dependent baseline hazard rate is computed. Five parametric reliability models are selected to capture the baseline hazard rate for the three groups. The value-at-risk for each group of failures is computed to express the risk at different confidence levels. Life circle of truck engine exhaust valves can be estimated. 相似文献
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绿色制造是碾代制造追求的目标,而减少或者消除制造系统中的废物流则是实现这一目标的基础之一。基于这一理念,计算出制造系统产生的废物量是非常重要。切削加工是制造系统的典型环节,本文阐述了切削加工过程中的废物流,并详细分析了切削加工过程中产生的废弃物的种类和与各主要废弃物产生量相关的主要因素。此外,还分析了废弃物计算系统的软件构架及实现机制。 相似文献
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Flooded oil lubrication systems are commonly utilized for many manufacturing processes. However, there is an increasing concern with the flooded lubrication systems due to their biological and environmental impact as well as their maintenance and disposal cost. Polymer-based material, a sponge-like solid lubricant allowing the oil to weep out while in use, provides a promising alternative environmentally benign lubrication solution to satisfy the lubrication requirements for some manufacturing processes. In addition, it can minimize contamination of the coolant system, reduce waste processing and disposal costs, and alleviate the in-plant safety hazard from oil leakage on floor surfaces. The goal of this study is to develop and improve the current lubrication system by applying a polymer-based near-dry lubrication system in order to replace the oil-flooded transfer line lubrication systems currently in production use. Using a laboratory reciprocating bench test based on the design of experiments, this study characterized the tribological performance of the polymer-based lubrication system under a variety of operating conditions, identified the main factor that impacts the tribological performance of the polymer-based lubrication system, and developed a model to predict the wear loss of the polymer-based lubricant plate. These results provide the guidelines for possible applications of the polymer-based lubrication system used in the manufacturing process. 相似文献
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文章介绍了三值模型的基本概念,以及用三值模拟算法来检测竞争冒险现象的方法。此方法除了能检测由单个门电路和触发器组成的数字系统产生的竞争冒险现象,也能检测由FPGA或CPLD组成的数字系统产生的竞争冒险现象。 相似文献
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