Results 31 to 40 of about 7,664,425 (315)

Airway responsiveness and job selection: a study in coal miners and non-mining controls. [PDF]

Occupational and Environmental Medicine, 1995
BACKGROUND--It has been suggested that health related job selection is a major cause of the healthy worker effect, and may result in inaccurate estimates of health risks of exposures in the working environment. Improved understanding of self selection, including the role of airway hyperresponsiveness, should improve accuracy in estimating occupational ...
E L, Petsonk, E M, Daniloff, D M, Mannino, M L, Wang, S R, Short, G R, Wagner   +5 more
openaire   +2 more sources

Il diritto di Text and Data Mining (TDM) non esiste

Rivista Italiana di Informatica e Diritto, 2023
L’a. analizza le disposizioni della direttiva copyright nel mercato unico digitale (direttiva (UE) 2019/790: CDSMD) relative alla c.d. eccezione di Text and Data Mining al fine di stabilire se per consentire le attività tecniche implicate dalle ...
Salvatore Orlando
doaj   +1 more source

Potential Use of Methane Gas from Municipal Waste Storage Facilities: A Case Study of the Karaganda Region

Energies
This article presents an environmental assessment of emissions from a solid waste landfill in the Karaganda Region of the Republic of Kazakhstan in order to study the dynamics of methane release and determine its energy potential.
Ravil Mussin, Denis Akhmatnurov, Nail Zamaliyev, Yelena Tseshkovskaya, Natalya Tsoy, Alexandr Zakharov, Vadim Tseshkovskiy, Nikita Ganyukov, Krzysztof Skrzypkowski, Krzysztof Zagórski, Anna Zagórska   +10 more
doaj   +1 more source

Distribution of Some Ecotoxic Elements in Fuel and Solid Combustion Residues in Poland

Energies, 2020
The purpose of this paper is to assess the content and distribution of some elements in coal from two bituminous coal basins and in fly ash and slag derived from combustion of the coals in six power plants in Poland.
Henryk R. Parzentny, Leokadia Róg
doaj   +1 more source

Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type

Frontiers in Earth Science, 2023
Mississippi Valley Type (MVT)1 deposits represent the majority of carbonate-hosted Zn–Pb deposits globally. They typically form in an extensional tectonic setting along passive margins.
Han Runsheng, Zhang Yan, Qiu Wenlong, Ding Tianzhu, Wang Mingzhi, Wang Feng   +5 more
doaj   +1 more source

Enhanced Coal Fly Ash Desilication Using Atmospheric NaOH Leaching with Simultaneous Magnetic Separation

Metals, 2023
Coal fly ash (CFA) is a technogenic waste formed during coal combustion in thermal power plants (TPPs). The extraction of valuable components from CFA is complicated by the presence of a large amount of amorphous glassy mass and iron.
Andrei Shoppert, Dmitry Valeev, Irina Loginova, Leonid Chaikin, Jinhe Pan   +4 more
doaj   +1 more source

Business process mining: from theory to practice [PDF]

, 2012
Purpose - This paper presents a comparison of a number of business process mining tools currently available in the UK market. An outline of the practice of business process mining is given along with an analysis of the main techniques developed by ...
Turner, Christopher J., Tiwari, Ashutosh, Xu, Yuchun, Chris J. Turner, Ashutosh Tiwari, Richard Olaiya, Olaiya, Richard, Yuchun Xu   +7 more
core   +1 more source

Recent Advances for Phase Transformation and Reconstruction of Gold-bearing Inclusions during the Pre-oxidation of Refractory Gold Ores

Kuangchan zonghe liyong
This is an article in the field of mining engineering. Under the background of "double carbon" and "ballast stone" of refractory gold ore resources, pre-oxidation is an effective pretreatment method for efficient gold extraction from refractory gold ores.
Tiantian WU, Zhihui SHEN, Jianlong WANG, Guixu HE, Yueqin QIU   +4 more
doaj   +1 more source

Substantiation of ways for rational use of deep pit technogenic resources

Горные науки и технологии, 2018
The purpose of the paper is to solve the scientific and practical problem of the rational use of technogenic resources in open-pit mining as exemplified by deep Muruntau open pit. Overview of the studies in this area is given.
N. P. Snitka, B. R. Raimjanov, R. Sh. Naimova   +2 more
doaj   +1 more source

Soil mesoarthropods in areas of coal mining under environmental recovery [PDF]

Pesquisa Agropecuária Brasileira, 2017
: The objective of this work was to evaluate the soil mesofauna composition in non-mining and in mining areas under environmental recovery with native vegetation and forest planting, in a coalmine in Southern Brazil.
Dayanna do Nascimento Machado, Ervandil Corrêa Costa, Leandra Pedron   +2 more
doaj   +2 more sources