Results 71 to 80 of about 13,557 (226)

Variabilidade espacial de atributos mineralógicos de um latossolo sob diferentes formas do relevo: I - mineralogia da fração argila Spatial variability of mineralogical attributes of an oxisol under different relief forms: I - clay fraction mineralogy

Revista Brasileira de Ciência do Solo, 2008
A distribuição dos minerais da fração argila depende de condições pedoambientais específicas. O estudo das relações entre atributos desses minerais e locais específicos de sua ocorrência na paisagem torna-se importante para o entendimento das relações ...
Livia Arantes Camargo, José Marques Júnior, Gener Tadeu Pereira, Renata Alves Horvat   +3 more
doaj   +1 more source

Obtaining of transition phases of alumina starting from sodium aluminate in Bayer process [PDF]

Hemijska Industrija, 2011
Transition (active) phases of alumina were synthesized starting from sodium aluminate solution prepared out of Bayer liquor. The neutralisation of sodium aluminate solution was performed by sulphuric acid.
Obrenović Zoran, Filipović Radislav, Milanović Marija, Stijepović Ivan, Nikolić Ljubica M.   +4 more
doaj   +1 more source

Effect of Silica Particle Size and Primary Foaming Intensity on Rhenium Retention During High‐Level Waste Glass Melting

Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
The effect of silica particle size and primary foaming on rhenium (Re) retention was investigated in a simulated high‐level waste melter feed. Despite increased primary foaming, finer silica particles enhanced Re retention due to faster dissolution and higher viscosity of the transient glass‐forming melt.
Matouš Eret, Laura Löwy, Jaroslav Kloužek, Petra Cincibusová, Miroslava Vernerová, Ivana Perná, Martina Kohoutková, Petr Bezdicka, Pavel Hrma, Albert A. Kruger, Richard Pokorný   +10 more
wiley   +1 more source

Modification of the simple mass balance equation for calculation of critical loads of acidity. [PDF]

, 1995
Over the last few years, the simple mass balance equation for the calculation of critical loads of acidity has been gradually modified as the underlying critical load concepts have developed and as problems with particular forms of the equation have been
Cresser, M., de Vries, W., Hornung, M., Langan, S., Reynolds, B., Robertson, W., Skeffington, R., Sverdrup, H.   +7 more
core  

Caracterização química e mineralógica de agregados de diferentes classes de tamanho de Latossolos Bruno e Vermelho localizados no estado do Paraná Chemical and mineralogical characterization of the different structure size classes of Red-Yellow and Dusky Red Latosols in Paraná, Brazil

Revista Brasileira de Ciência do Solo, 2008
O teor e a forma dos minerais da fração argila são determinantes na definição da morfologia dos agregados do solo. Objetivando estudar a mineralogia da fração argila e as propriedades químicas de diferentes classes de agregados de Latossolos (Latossolo ...
Vander de Freitas Melo, Fernando Henrique Toledo, Rodrigo de Moura, Valmiqui Costa Lima, André Ademir Ghidin   +4 more
doaj   +1 more source

Reactivity Evolution of Mechanochemically Activated Laterite Used as a Supplementary Cementitious Material

Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
ABSTRACT The use of laterite soil with high Al and Fe content has been investigated as a novel supplementary cementitious material (SCM) to replace traditional mineral materials for clinker substitution. High‐energy ball milling was used to mechanochemically activate laterite and change its reactivity.
Jean Noel Yankwa Djobo, Hong Wong, Christopher Cheeseman   +2 more
wiley   +1 more source

Clay mineralogy of tephras and associated paleosols and soils, and hydrothermal deposits, North Island [New Zealand] [PDF]

, 1993
Tour themes and itinerary The tour centres on the occurrence and genesis of clay minerals, especially allophane, halloysite, and ferrihydrite, associated with both Quaternary rhyolitic airfall tephra (volcanic ash) deposits and volcanogenic alluvium ...
Lowe, David J., Percival, H.J.
core   +1 more source

Speciation of phosphorus in a fertilized, reduced-till soil system: in-field treatment incubation study [PDF]

, 2012
Citation: Khatiwada, Raju, Ganga M. Hettiarachchi, David B. Mengel, and Mingwei Fei. “Speciation of Phosphorus in a Fertilized, Reduced-Till Soil System: In-Field Treatment Incubation Study.” Soil Science Society of America Journal 76, no. 6 (2012): 2006–
Arai, Beauchemin, Benbi, Bordoli, Bray, Bremner, Chapman, Combs, Dalas, David B. Mengel, Fixen, Foth, Frank, Ganga M. Hettiarachchi, Hansen, Hanson, Hedley, Helyar, Hesterberg, Hettiarachchi, Hingston, Hingston, Hobbs, Holloway, Hsu, Khare, Kilmer, Lawton, Lindsay, Lombi, Lombi, Malinowski, Mallarino, Marcus, McBeath, McLean, Mehlich, Menon, Mingwei Fei, Moody, Murphy, Myers, Nachtegaal, Oh, Peak, Pierzynski, Pierzynski, Raju Khatiwada, Ravel, Rietra, Saggar, Salcedo, SAS Institute, Sato, Schwab, Schwertmann, Sharpley, Sharpley, Simard, Sims, Soil Survey Laboratory Staff, Sposito, Thomas, Toor, Warncke, Watanabe, Wateson, Whitney   +67 more
core   +2 more sources

Sound Velocities of FeO‐Bearing Ringwoodite and Majorite: Implication for Martian Mantle Seismic Profiles

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Compressional and shear wave velocities (Vp, Vs) of candidate Martian deep‐mantle minerals, FeO‐rich ringwoodite ((Mg0.66Fe0.34)2SiO4) and majorite (Mg0.75Fe0.10Al0.26Ca0.07Si0.84O3), were measured up to 25 GPa and 700 K using Brillouin light scattering coupled with externally‐heated diamond anvil cells.
Luo Li, Takayuki Ishii, Young Jay Ryu, Dongzhou Zhang, Stella Chariton, Vitali B. Prakapenka, Jung‐Fu Lin   +6 more
wiley   +1 more source

Potential of Soils Natural Sorbents for Environmental Decontamination From 137Cs

Land Degradation &Development, Volume 37, Issue 2, Page 779-789, 30 January 2026.
ABSTRACT This study addresses the existing research gap concerning the lack of integrated data on the role of in situ soil components in the long‐term fixation of 137Cs under natural, protected, and non‐agricultural conditions. The contamination of ecosystems by radioactive isotopes, particularly 137Cs, represents a considerable environmental hazard ...
Katarzyna Szarłowicz, Filip Jędrzejek, Marcin Stobiński, Michał Skiba   +3 more
wiley   +1 more source