نتایج جستجو برای: surface mines

تعداد نتایج: 641844  

Journal: :Environmental Health Perspectives 1998
K. Sangster

The presence or absence of an oestrogen receptor-related antigen in breast tumours has been examined histochemically using a monoclonal antibody ('D59 Coffer & King, 1981). In frozen sections, fixed either by the method of Tamura et al. (1980) or in methanol, staining was apparent in 14/24 (58%) and 22/26 (85%) of the breast cancers respectively. In paraffin sections fixed in ethanol, staining ...

heavy metal removal from water and wastewater was investigated by using raw and modified diatomite from Iranian mines. Modification of diatomite was done by impregnating the diatomite surface with 0.35 g of manganese oxide in one gram of diatomite. This modified diatomite was named Mn-Diatomite. The surface area measurements for Mn-diatomite showed a 2.2 fold increase, hence higher removal capa...

2004
R. Nilavalan G. S. Hilton

Surface Penetrating Radars (SPR) are extensively used in Military, Civil, Geophysical and Archaeological applications. In recent times there has been an increasing emphasis on the use of SPRs in the identification of the buried unexploded ordnance, such as anti tank mines, antipersonnel mines etc., which can be metallic or plastic in nature. Mine detection methods can be classified as destructi...

2015
DAVID WOLFE YING LI

Acid mine drainage (AMD) is the outflow of acidic water from metal mines or coal mines. When exposed to air and water, metal sulfides from the deposits of the mines are oxidized and produce acid, metal ions and sulfate, which lower the pH value of the water. An open limestone channel (OLC) is a passive and low cost way to neutralize AMD. A mathematical model has been created to numerically dete...

2002
Dave McCracken

What is a landmine? The purpose of a landmine is to disable, immobilize or kill. It is an explosive device activated either by a person or vehicle, or command detonated by electric wire or radio signal. Most landmines are laid on or just below the surface of the ground and are activated by pressure or trip-wire. Normally manufactured from very durable materials such as plastic, bakelite, concre...

Journal: :CoRR 2017
Thomas Bamford Kamran Esmaeili Angela P. Schoellig

In recent years, Unmanned Aerial Vehicle (UAV) technology has been introduced into the mining industry to conduct terrain surveying. This work investigates the application of UAVs with artificial lighting for measurement of rock fragmentation under poor lighting conditions, representing night shifts in surface mines or working conditions in underground mines. The study relies on indoor and outd...

In coal mines, fires and explosions due to rising temperatures and high coal densities are the most likely hazards. Due to the looseness of the coal-bearing terrestrial layers, there are also risks of collapsing extraction tunnels. Therefore, in order to manage the risk in coal mines, the risk model in these areas should be studied periodically. The purpose of this study is to comprehensively s...

Journal: :Journal American Society of Mining and Reclamation 1993

2016
Robin Burgess-Limerick Danellie Lynas

Long term exposure to high amplitude whole-body vibration is strongly associated with the development of back injury. Mobile plant used at mines are likely to be a source of high vibration amplitudes and management of the hazard requires systematic measurement of vibration levels. This paper describes measurements of whole-body vibration taken during projects funded by the Coal Services Health ...

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