نتایج جستجو برای: underground

تعداد نتایج: 14656  

2007

by Jasimuddin U. Ahmed U, Fntil the late 1970s, radon and its daughter products were regarded as radiation health hazards only encountered in the mining and milling of uranium. This notion has dramatically changed as a result of widespread indoor measurements of radon in many parts of the world. Increased radon concentrations in dwellings, for example, have been noted in countries in the temper...

2017
Aléx Jonas

The purpose of this study was to survey the EMS (emergency medical services) personnel preparedness for major incidents in the underground mining industry in Sweden. Every year, a high number of incidents, workplace accidents and fires are reported from the Swedish mining industry. Taking care of patients located in an underground mine represents a challenge to EMS personnel. Today, knowledge a...

Journal: :Occupational and environmental medicine 2005
A Seaton J Cherrie M Dennekamp K Donaldson J F Hurley C L Tran

AIMS To assess hazards associated with exposure to dust in the London Underground railway and to provide an informed opinion on the risks to workers and the travelling public of exposure to tunnel dust. METHODS Concentrations of dust, as mass (PM2.5) and particle number, were measured at different underground stations and in train cabs; its size and composition were analysed; likely maximal e...

2014
Aleksandar Hudic Katharina Krombholz Thomas Otterbein Christian Platzer Edgar R. Weippl

Cyber crime, such as theft of credentials or credit card fraud has emerged as a new type of crime in recent years. Cyber criminals usually attack Internet services to steal sensitive data and operate in crowded online underground marketplaces. Crime investigators and digital forensics are trying to detect and analyze these marketplaces. However, due to the lack of efficient and reliable methods...

2016
Yiming Zhao Nong Zhang Guangyao Si

Monitoring of roof activity is a primary measure adopted in the prevention of roof collapse accidents and functions to optimize and support the design of roadways in underground coalmines. However, traditional monitoring measures, such as using mechanical extensometers or electronic gauges, either require arduous underground labor or cannot function properly in the harsh underground environment...

2014
Yu Zhang Wei Yang Dongsheng Han Young-Il Kim

Environment monitoring is important for the safety of underground coal mine production, and it is also an important application of Wireless Sensor Networks (WSNs). We put forward an integrated environment monitoring system for underground coal mine, which uses the existing Cable Monitoring System (CMS) as the main body and the WSN with multi-parameter monitoring as the supplementary technique. ...

2017
Linqin Cai Zhuo Yang Simon X. Yang Hongchun Qu

Due to safety and ethical issues, traditional experimental approaches to modelling underground risk behaviours can be costly, dangerous and even impossible to realize. Based on multi-agent technology, a virtual coalmine platform for risk behaviour simulation is presented to model and simulate the human-machineenvironment related risk factors in underground coalmines. To reveal mine workers’ ris...

2012
Isabel Zirnstein Thuro Arnold Evelyn Krawczyk-Bärsch Ulf Jenk Gert Bernhard Isolde Röske

The underground uranium mine Königstein (Saxony, Germany), currently in the process of remediation, represents an underground acid mine drainage (AMD) environment, that is, low pH conditions and high concentrations of heavy metals including uranium, in which eye-catching biofilm formations were observed. During active uranium mining from 1984 to 1990, technical leaching with sulphuric acid was ...

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