Results 91 to 100 of about 1,604 (165)

Low-grade metamorphism of Cambro-Ordovician successions in the Famatina belt, Southern-Central Andes: Burial-inversion history linked to the evolution of the proto-Andean Gondwana margin Metamorfismo de bajo grado de sucesiones cambro-ordovícicas en el cinturón del Famatina, Andes Centrales de Argentina: Historia de enterramiento-exhumación ligada a la evolución del margen proto-andino de Gondwana

Andean Geology, 2011
The metamorphic P-T conditions of low-grade units from the Famatina belt, Central Andes of Argentina, were estimated through petrography, X-ray diffraction, and electron microscopy.
Gilda Collo, Margarita Do Campo, Fernando Nieto   +2 more
doaj  

DFT study of the cation arrangements in the octahedral and tetrahedral sheets of dioctahedral 2:1 phyllosilicates

, 2006
Quantum mechanical calculations based on the density functional theory (DFT) are used to study the crystal structures of dioctahedral 2:1 phyllosilicates.
Dove, M. T., Sainz-Díaz, C. I., Hernández-Laguna, A., Escamilla-Roa, E., Timón, V.   +4 more
core   +1 more source

The 2M1 dioctahedral mica polytype: a crystal chemical study

, 2005
The structure of dioctahedral true micas such as muscovite and celadonitic muscovite (2M1 polytype, Space Group C2/c) is mostly affected by variations of the octahedral Al content ([vi]Al).
MALFERRARI, Daniele, POPPI, Marco, BRIGATTI, Maria Franca, POPPI, Luciano   +3 more
core   +1 more source

Clay formation and podzol development from postglacial moraines in Switzerland

, 1999
International audienceAB ST R ACT : The fine silt (2À5 mm) and fine clay (
Huber, Karin, Righi, Dominique, Keller, Catherine, Huber, Karine   +3 more
core   +1 more source

Effect of interlayer cation and relative humidity on the hydration properties of a dioctahedral smectite

, 2007
International audienceThis paper aims at characterizing the structural evolution of a dioctahedral smectite (i.e. Wyoming montmorillonite) saturated by Na+, Cu2+or Pb2+. Hydration properties of the
Rhaiem, H., Amara, A. B. H., Oueslati, Walid, Karmous, M. S., Lanson, B.   +4 more
core   +1 more source

Anaerobic methane-oxidizing activity in a deep underground borehole dominantly colonized by Ca. Methanoperedenaceae. [PDF]

Environ Microbiol Rep, 2023
Nishimura H, Kouduka M, Fukuda A, Ishimura T, Amano Y, Beppu H, Miyakawa K, Suzuki Y.   +7 more
europepmc   +1 more source

Hydrolysis of aluminum in synthetic cation exchange resins and dioctahedral vermiculite

, 1965
The hydrolysis of aluminum in synthetic cation exchange resins differing in charge density was evaluated after treating aluminum and potassium saturated resins with solutions of hydrolyzed aluminum.
Cotton, Stuart Brady
core  

Determinación y Análisis de Fórmulas Estructurales de Esmectitas del Estado de Guanajuato Determinación y Análisis de Fórmulas Estructurales de Esmectitas del Estado de Guanajuato

Acta Universitaria, 2012
En este trabajo se determinan las fórmulas estructurales de minerales arcillosos contenidos en arcillas provenientes de localizaciones geológicas de los municipios de Comonfort, Jerécuaro, Victoria y San Francisco del Rincón, pertenecientes al Estado de
Esthela Ramos Ramírez, Salvador Aguilar Becerra, Yolanda G. Gallaga Ortega   +2 more
doaj  

On the structural formula of smectites: a review and new data on the influence of exchangeable cations. [PDF]

J Appl Crystallogr, 2021
García-Romero E, Lorenzo A, García-Vicente A, Morales J, García-Rivas J, Suárez M.   +5 more
europepmc   +1 more source

Analgesic effect of structured anal skin care for perianal dermatitis after low anterior resection in the rectal cancer patients: prospective, single-center, open-label, therapeutic confirmatory, randomized clinical trial. [PDF]

Ann Surg Treat Res, 2022
Son GM, Lee IY, Yun MS, Youn JH, An HM, Kim KH, Yeo SM, Ku B, Kwon MS, Kim KH.   +9 more
europepmc   +1 more source