نتایج جستجو برای: hazardous element
تعداد نتایج: 219996 فیلتر نتایج به سال:
In response to a growing societal mandate, land disposal of hazardous wastes is gradually being replaced by treatment technologies. This shift to “alternative technologies” is the result of the impacts of past land disposd practices on other environmental media (groundwater, surface water, and air). A prime motivation for pdopting alternatives to land disposal is to eliminate these cross-media ...
Dental offices produce a variety of dangerous wastes during normal business day. Most of these waste are non-hazardous that can be managed as household wastes; however, some component are hazardous and can pose a risk to human and the environment if discarded to Municipal Solid Wastes. These types of wastes must be managed separately. Therefore, the aim of this study was to assess the component...
Novel telluride glasses with high electrical conductivity, wide infrared transparency and good resistance to crystallization are used to design an opto-electrophoretic sensor for detection and identification of hazardous microorganisms. The sensor is based on an attenuated total reflectance element made of Ge-As-Te glass that serves as both an optical sensing zone and an electrode for driving t...
Finite Element Analysis of Permanent Magnet Synchronous Motors Subjected to Symmetrical Voltage Sags
This paper studies the effects of symmetrical voltage sags on the operational characteristics of a Permanent Magnet Synchronous Motor (PMSM) by Finite Element Method (FEM). Voltage sags may cause high torque pulsations which can damage the shaft or equipment connected to the motor. By recognizing the critical voltage sags, sags that produce hazardous torque variations could be prevented. Simula...
Recovering energy from waste is a positive element in the operation of incineration plant. Hazardous very diverse group, including terms its fuel properties. Carrying out thermal process this case associated with difficulty maintaining stable conditions. This may translate into efficiency recovery waste. The article presents tool supporting work hazardous plant operators, aim which to select fo...
North America railways offer safe and generally the most economical means of long distance transport of hazardous materials. Nevertheless, in the event of a train accident releases of these materials can pose substantial risk to human health, property or the environment. The majority of railway shipments of hazardous materials are in tank cars. Improving the safety design of these cars to make ...
The purpose of E-Waste recycling is resource recovery and hazardous substances management (HSM). However, academic literature that deals with the various social aspects of HSM is limited. As such, this paper focuses on the changes for labeling method, particularly those related to hazardous substance management, and discusses how and why the current mandatory methods have been adopted. We organ...
Occupational hygiene, in its broadest sense, is the recognition, evaluation and control of health hazards arising from work – a trained hygienist needs to understand a range of subjects from health and safety legislation through to toxicology, hazardous substances, physical agents, exposure assessment and exposure control strategies. To some extent, occupational hygiene is relevant in all workp...
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