Results 61 to 70 of about 127,546 (339)
Revista Brasileira de Ciência do Solo, 2003 Poucos trabalhos relacionam a reserva de K em solos desenvolvidos sob clima tropical úmido com os minerais presentes na fração argila. Com esse propósito, coletaram-se amostras de 19 solos no Triângulo Mineiro, originados de diferentes materiais de ...
V. F. Melo +4 more
doaj +1 more source
Evaluation of some ceramic clays from Zambia [PDF]
, 1993 This reports details the technical evaluation of ceramic clays collected during visits to Zambia in 1990 and 1991 by the author (Clive Mitchell). The clay samples included: Choma kaolin (Southern Province), Twapia kaolin (Copperbelt Province), Kapiri ...
Mitchell, C.J.
core
Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures
Deep Underground Science and Engineering, EarlyView.This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao +3 more
wiley +1 more source
Uso de diopsídio em massas cerâmicas para grés sanitários
CerâmicaResumo Atualmente, há uma severa escassez de jazimentos de feldspato de boa qualidade. Por outro lado, o diopsídio vem se mostrando um fundente alternativo para a indústria cerâmica, mas ainda pouco estudado.
R. H. L. Silva +5 more
doaj +1 more source
RESPONSE OF RUTA GRAVEOLENS L. TO ROCK PHOSPHATE AND /OR FELDSPAR UNDER BIOLOGICAL FERTILIZERS [PDF]
Arab Universities Journal of Agricultural Sciences, 2007 Two experiments were consummated at the Experimental Farm, National Research Center (NRC), Dokki, Cairo, Egypt during two succes-sive seasons of 2004/2005 and 2005/2006 to eval-uate the effect of natural products as a source of some important elements ...
Khalid Khalid +2 more
doaj +1 more source
Developing Effective Separation of Feldspar and Quartz While Recycling Tailwater by HF Pretreatment
, 2018 The effect of hydrofluoric acid (HF) pretreatment on flotation of feldspar and quartz using dodecylamine (DDA) as collector was investigated by micro-flotation, zeta potential, pyrene fluorescence spectroscopy, attenuated total reflection flourier ...
Weiqing Wang +6 more
semanticscholar +1 more source
The complexity of sediment recycling as revealed by common Pb isotopes in K-feldspar
Geoscience Frontiers, 2018 Detrital zircon U–Pb geochronology has become the gold standard in evaluating source to sink relationships in sedimentary basins. However, the physical and chemical robustness of zircon, which make it such a useful mineral for provenance studies, is also
S. Johnson +4 more
semanticscholar +1 more source
Deep Underground Science and Engineering, EarlyView.A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen +5 more
wiley +1 more source
Petrography and Provenance Study of South-Central Part of Kaladgi Basin, Belgaum, Karnataka, India
International Journal of Economic and Environment Geology, 2020 The area under investigation covers the south-central part of Kaladgi series comprising of sedimentary rocks, mainly quartzarenites. From the geological point of view the study area comprises southcentral part of Kaladgi basin covering ...
Anant G. Pujar, A. Sreenivasa, Ajaykumar N. Asode
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang +5 more
wiley +1 more source