Results 21 to 30 of about 2,445,002 (241)

Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes

open access: yesГорные науки и технологии, 2023
Digital simulation of mine fires and explosions is an important stage in the process of developing technical solutions and measures aimed at improving the safety of personnel involved in underground mining.
Maxim O. Perestoronin   +2 more
doaj   +1 more source

Study on In Situ Stress Distribution Law of the Deep Mine: Taking Linyi Mining Area as an Example

open access: yes, 2021
The variation of the in situ stress state is closely related to various factors. In situ stress state is also an important indicator to guide mining production.
Xuelong Li   +4 more
semanticscholar   +1 more source

Underground unmanned aerial vehicles cluster system for monitoring and its key technologies

open access: yesGong-kuang zidonghua, 2019
Underground monitoring and control system is usually fixed and has limited range, so it is difficult to fully meet dynamic monitoring requirements of underground safety production.
YANG Wei, SHAN Chunyan, LIU Junbo
doaj   +1 more source

Research on ultraviolet image perception method of mine electric spark and thermal power disaster

open access: yesGong-kuang zidonghua, 2022
The electric leakage of underground cables and electrical equipment in coal mine, electromotive force discharge induced by high-power radio transmission on metal support and electromechanical equipment metal will generate electric spark, which will then ...
SUN Jiping   +3 more
doaj   +1 more source

Value relevance of troubled debt restructurings and policy implications [PDF]

open access: yes, 2005
This paper investigates the beneficial economic consequences and market and accounting based valuation effects of troubled debt restructurings (TDR) in financially distressed debtor firms.
Aksu, Mine Hatice
core   +1 more source

La explotación aurífera en el occidente asturiano: evolución histórica y situación actual

open access: yesEstudios Geográficos, 2002
[es] El noroeste español, y concretamente el occidente asturiano, cuenta con una amplia tradición en la explotación aurífera que es anterior a la conquista romana y que ha perdurado con altibajos hasta nuestros días.
Francisco Feo Parrondo
doaj   +1 more source

DETERMINATION OF THE RISK AT WORKPLACE, ASSESSMENT AND ITS RANK CALCULATION, IN MINING ACTIVITIES

open access: yesGeoScience Engineering, 2020
Compared to the major industries, mining industry has a high risk accident potential. Over ten thousand miners are killed every year, and this is just the official figure.
Kemajl ZEQIRI   +2 more
doaj   +1 more source

Application of Transient Electromagnetic Method for Investigating the Water-Enriched Mined-Out Area

open access: yesApplied Sciences, 2018
The water-enriched mined-out area, which led to frequent accidents and the serious destruction of ecological environment and serious threat to coal-mining practices.
Chuantao Yu   +5 more
doaj   +1 more source

BAGEL4: a user-friendly web server to thoroughly mine RiPPs and bacteriocins

open access: yesNucleic Acids Res., 2018
Interest in secondary metabolites such as RiPPs (ribosomally synthesized and posttranslationally modified peptides) is increasing worldwide. To facilitate the research in this field we have updated our mining web server.
A. J. Heel   +5 more
semanticscholar   +1 more source

Effects of soil cover and protective measures on reducing runoff and soil loss under artificial rainfall

open access: yesSoil and Water Research, 2015
The hazards from wind, sand, and soil erosion caused by human activities, such as residue slopes in abandoned urban mines, have resulted in a vicious circle of environmental degradation.
Yan ZHANG   +6 more
doaj   +1 more source

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