Results 21 to 30 of about 1,597,779 (302)
Technology and determination of the applicability of stone blowing at the current track maintenance
Вестник Научно-исследовательского института железнодорожного транспорта, 2020 Grain composition of track ballast is in a narrow size range, which provides maximum volume of ballast voids of 30–60 mm for category 1 crushed stone, 25–60 mm for category 2 crushed stone with round sieves and 22.4–63.0 mm for category B crushed stone ...
V. N. Kaplin +2 more
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Particle and Fibre Toxicology, 2022 Background Respirable mineral particles represent a potential health hazard in occupational settings and ambient air. Previous studies show that mineral particles may induce cytotoxicity and inflammatory reactions in vitro and in vivo and that the ...
Vegard Sæter Grytting +7 more
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Crystals, 2020 Replacing part of cement with waste stone powder can reduce the use of cement, thus reducing energy consumption and CO2 emission. Different stone powders affect the properties of cement-based materials differently.
Xiaowei Ouyang +3 more
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True grit: ingestion of small stone particles by hummingbirds in West Mexico [PDF]
Avian Research, 2021 AbstractBackgroundGrit is used by birds mainly for grinding hard food items but can also serve a nutritional role as a source of minerals. Ingestion of grit by birds has been documented primarily in species that feed on seeds and invertebrates. Although feeding mainly on nectar and small arthropods, hummingbirds also ingest grit, but why they do so is ...
Omar Maya-García +2 more
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Particle and Fibre Toxicology, 2022 Background People are exposed to ambient particulate matter (PM) from multiple sources simultaneously in both environmental and occupational settings.
Vegard Sæter Grytting +4 more
doaj +1 more source
Blank roasting kinetics of illite type vanadium bearing stone coal
Journal of Materials Research and Technology, 2020 Vanadium bearing stone coal is an important vanadium resource in China, and roasting is the foundation for extracting vanadium from stone coa1. In this paper, the blank roasting kinetics of illite type vanadium bearing stone coal is studied using the ...
Chengqiang Zhang +4 more
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Surface consolidation of natural stone materials using microbial induced calcite precipitation [PDF]
, 2014 Natural stone tends to have high porosity and is easily eroded by environmental weathering. In recent years, industrialisation has caused an acceleration of stone decay due to the toxic by-products of industry breaking down the stones’ constituents ...
Forster, Alan Mark; id_orcid +5 more
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Investigation of Asphalt Concrete Macrostructure Parameters
Наука и техника, 2005 Investigations have been carried to study influence of crushed stone on the reliability of asphalt concrete. Crushed stone is the main asphalt concrete component that creates its structure.
V. A. Verenko, N. I. Verbilo
doaj +1 more source
Application of Microfillers in Energy-Saving Compressed Gypsum Composites
Chemical Engineering Transactions, 2022 This paper presents the results of comparative studies of the effect of highly dispersed fillers on the mechanical and structural characteristics of pressed composites based on gypsum.
Victoria Petropavlovskaya +4 more
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Compositional and structural analysis of engineered stones and inorganic particles in silicotic nodules of exposed workers [PDF]
Particle and Fibre Toxicology, 2021 Abstract Background Engineered stone silicosis is an emerging disease in many countries worldwide produced by the inhalation of respirable dust of engineered stone. This silicosis has a high incidence among young workers, with a short latency period and greater aggressiveness than silicosis ...
Antonio León-Jiménez +10 more
openaire +5 more sources