Results 111 to 120 of about 127,520 (303)
Field and laboratory studies were conducted to evaluate the impact of proppant sand mining and processing activities on community particulate matter (PM) concentrations.
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Industrial mineral resources of Zambia [PDF]
, 2000 Zambia has for many years been heavily dependent upon the mining of copper which, combined with cobalt production, represents over 98% of mineral sales and 75% of export earnings (1997 figures).
Mitchell, Clive
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Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.ABSTRACT Chemical communication, typically based on feces, urine, and glandular secretions, often deposited as substrate scent marks, plays a key role in social organization and communication among many mammals, especially carnivores. This study assesses experimentally whether the type of substrate chosen for fecal deposition and the temperature ...
Elisa Espartosa +2 more
wiley +1 more source
The effect of mechanical reclamation on the wear of silica sand grains [PDF]
Metalurgija, 2008 The wear effect of silica sands is usually joined with many foundry processes during the fresh sand preparation. The significant effect of silica grains destruction by means of crushing, abrasion and attrition is caused by most of mechanical reclamation ...
Łucarz, M.
doaj
Atmosphere, 2015 Due the rapid expansion of frac sand production, local residents, community leaders, and state regulatory authorities have expressed concerns regarding the lack of ambient respirable crystalline silica concentration data for areas near to these ...
John Richards, Todd Brozell
doaj +1 more source
Predicting the Temperature-Dependent Long-Term Creep Mechanical Response of Silica Sand-Textured Geomembrane Interfaces Based on Physical Tests and Machine Learning Techniques. [PDF]
Materials (Basel), 2023 Chao Z, Wang H, Hu H, Ding T, Zhang Y.
europepmc +1 more source
JSFA reports, EarlyView.Abstract Background Bacterial wilt of enset (Ensete ventricosum (Welw.) Cheesman) is a severe disease caused by Xanthomonas campestris pv. musacearum, resulting in complete crop failure and considerable damage. This study assessed the biochemical responses of two enset clones (one resistant and one susceptible) when inoculated with the pathogen and ...
Getahun Yemata, Masresha Fetene
wiley +1 more source
Role of Sand Grains in Sorption Processes by Surface Layers of Components of Sand Moulds
Archives of Foundry Engineering, 2017 The results of researches of sorption processes of surface layers of components of sand moulds covered by protective coatings are presented in the hereby paper.
Kaźnica N., Zych J.
doaj +1 more source
Effects of microstructure on compressive strength of silica sand-enhanced oil well cement at a wide temperature range. [PDF]
R Soc Open Sci, 2022 Chen Z +5 more
europepmc +1 more source
Triaxial compression tests on a crushable sand in dry and wet conditions [PDF]
, 2015 A calcareous sand from the Persian Gulf is subjected to a series of dry and fully drained saturated triaxial shear tests. The samples are prepared at relative densities of 65% and either left dry or saturated. They are consolidated to confining pressures
Haegeman, Wim, Van Impe, PO, Wils, L
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