Results 111 to 120 of about 4,204 (206)

Spectral effects of dehydration on phyllosilicates [PDF]

Six phyllosilicates were progressively dehydrated under controlled conditions in an effort to study the spectral effects of their dehydration. The spectra obtained at each level of hydration provide information that may be used in future spectroscopic ...
Bruckenthal, E. A., Singer, R. B.
core   +1 more source

Modeling the dioctahedral smectites layer charge variation versus structural Iron reduction level [PDF]

, 2012
Iron is one of the most common redox species in soils and sedimentary rocks. Amongst iron-bearing phases, phyllosilicates might play key roles in various bio-geochemical processes involving redox reactions, where structural Fe (Festr) can act as a ...
Betelu, Stéphanie, Charlet, Laurent, Hadi, Jebril, Ignatiadis, Ioannis, Tournassat, Christophe   +4 more
core   +1 more source

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

Clays, clay minerals and cordierite ceramics - a review [PDF]

, 2015
The conventional methods for the synthesis of cordierite ceramics include the solid-state sintering of individual oxides of magnesium, aluminium and silicon of the corresponding chemical composition of cordierite, or sintering of the natural raw ...
Valášková, Marta
core   +1 more source

Long-term activity of social insects responsible for the physical fertility of soils in the tropics. [PDF]

Sci Rep, 2023
Bruand A, Reatto A, Brossard M, Jouquet P, de Souza Martins É.   +4 more
europepmc   +1 more source

Crystal structure and revised chemical formula for burckhardtite, Pb_2(Fe^(3+)Te^(6+))[AlSi_3O_8]O_6: a double-sheet silicate with intercalated phyllotellurate layers [PDF]

, 2014
The crystal structure of burckhardite from the type locality, Moctezuma, Sonora, Mexico, has been refined to R_1 = 0.0362 and wR_2 = 0.0370 for 215 reflections with I > 2σ(I). Burckhardtite is trigonal, space group P3lm, with the unit-cell parameters ɑ =
Christy, Andrew G., Housley, Robert M., Kampf, Anthony R., Mills, Stuart J., Thorne, Brent   +4 more
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  

Ambient and cold-temperature infrared spectra and XRD patterns of ammoniated phyllosilicates and carbonaceous chondrite meteorites relevant to Ceres and other solar system bodies [PDF]

, 2018
Mg‐phyllosilicate‐bearing, dark surface materials on the dwarf planet Ceres have NH_4‐bearing materials, indicated by a distinctive 3.06 μm absorption feature.
Ammannito, Eleonora, Bristow, Thomas F., De Sanctis, M. Cristina, Ehlmann, Bethany L., Hodyss, Robert, Raymond, Carol A., Rossman, George R.   +6 more
core  

Oxidation State and Structure of Fe in Nontronite: From Oxidizing to Reducing Conditions. [PDF]

ACS Earth Space Chem, 2023
Qian Y, Scheinost AC, Grangeon S, Greneche JM, Hoving A, Bourhis E, Maubec N, Churakov SV, Fernandes MM.   +8 more
europepmc   +1 more source