Results 211 to 220 of about 104,435 (265)
[Protection of miner's health in Polish People's Republic].
Zdrowie publiczne, 2003 openaire +1 more source
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International Journal of Biological Macromolecules, 2023
Biomimetic mineralization emphasizes reversing the process of dental caries through bio-inspired strategies, in which mineralization promotion and collagen protection are equally important. In this study, carboxymethyl chitosan (CMC) was deemed as an analog of glycosaminoglycan for biomimetic modification of collagen, both of the mineralization ...
Zhongcheng, Li +9 more
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Biomimetic mineralization emphasizes reversing the process of dental caries through bio-inspired strategies, in which mineralization promotion and collagen protection are equally important. In this study, carboxymethyl chitosan (CMC) was deemed as an analog of glycosaminoglycan for biomimetic modification of collagen, both of the mineralization ...
Zhongcheng, Li +9 more
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Protecting Miners from Electrical Arcing Injury
2007 IEEE Industry Applications Annual Meeting, 2007Electrical arcing injuries are the most common form of electrical injury in mining. MSHA data show that 381 "non-contact electric arc burn" injuries occurred in the mining industry from 1996 - 2005. A more detailed study of data from 1990-2001 showed that five types of apparatus - circuit breakers, conductors, nonpowered hand tools, electrical meters ...
James C. Cawley, Gerald T. Homce
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Biomimetic Mineralization of Protein Nanogels for Enzyme Protection
Chemistry – A European Journal, 2019AbstractProtein nanogels have found a wide variety of applications, ranging from biocatalysis to drug/protein delivery. However, in practical applications, proteins in nanogels may suffer from enzymic hydrolysis and denaturation. Inspired by the structure and functionalities of the fowl eggshells, biomimetic mineralization of protein nanogels was ...
Qianyu Yu +3 more
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Balancing minerals development and environmental protection
Long Range Planning, 1991Abstract The Brundtland Commission on Environment and Development considered the overriding political concept of ‘Our Common Future’ is sustainable development. This paper considers the complexities of sustainable development in the mining/mineral development arena. Companies in the 1990s will have to develop clear environmental plans, and nowhere is
Frederick A. Frost, Stan Mensik
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FRPU Composite Protection of Masonry with Reversible Mineral Interlayer
2023The paper presents the results of preliminary tests of a newly proposed Fiber Reinforced Polyurethane (FRPU) composite system with mineral interlayer for strengthening of heritage structures in seismic areas. The analyzed FRPU system consisted of strips of an unidirectional textile of Ultra High Tensile Strength Steel (UHTSS) cords embedded in a two ...
Arkadiusz Kwiecień +3 more
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Protection of mineral resources
1993Poland has many economically important mineral resources, such as bituminous and brown coals, copper, zinc and lead ores, native sulphur, rock salt (halite) and various kinds of rock raw materials. Figure 35 shows the regions where these mineral deposits occur, and Table 13 gives the extent of geological resources and the size of extractable deposits ...
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The concept of multi-criteria mineral resources protection
Environmental Geology, 2006The author deals with a complex, multi-criteria system of protection of mineral resources, based on the evaluation of their deposits, both with identified and inferred reserves, and perspective areas, i.e., the areas where mineral deposits may occur. The purpose of valorization is to compare different deposits using the same, uniform criteria, and then
Barbara Radwanek-Bak
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Radiation Protection Analvsis for a Rare Mineral Specimen
Health Physics, 2001A particularly dramatic example of the mineral novacekite was recently sold at an auction. An overseas collector submitted the winning bid of $82,000. Novacekite incorporates natural uranium as a major element of its composition. The object was evaluated primarily to aid in design of an appropriate container for shipment to the buyer.
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Bone Mineral Loss During Pregnancy: Is Tennis Protective?
Journal of Physical Activity and Health, 2010Background:Pregnancy may stress calcium economy in women through fetal calcium requirements, and increasing maternal body weight. Bone is stimulated by compression forces. Playing tennis may decrease bone resorption through intermittent mechanical loading. This study tests the thesis that maternal bone mineral changes during pregnancy in women who play
Mina, Dimov +2 more
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