Results 81 to 90 of about 5,672 (300)
Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs
Deep Underground Science and Engineering, EarlyView.A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao +5 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Electronic spin state of ferric iron in Al-bearing perovskite in the lower mantle
, 2005 We investigate the effect of pressure on the electronic spin state of ferric iron on Al-bearing MgSiO3-perovskite using first-principle computations. Ferric iron (6.25 mol%) and Al ( 6.25 mol%) substitute for Mg and Si respectively.
Price, GD +11 more
core +1 more source
NF membrane fouling by aluminum and iron coagulant residuals after coagulation-MF pretreatment [PDF]
, 2010 The effects of coagulant residuals on fouling of a nanofiltration (NF) membrane were investigated. Experiments were carried out with a laboratory-scale microfiltration (MF)-NF setup and a pilot MF-NF plant.
Itoh, Masaki +7 more
core +1 more source
Agriculture, 2015 Agricultural producers are interested in using biomass available on farms to substitute fossil fuels for heat production. However, energy crops like reed canary grass contain high nitrogen (N), sulfur (S), potassium (K) and other ash-forming elements ...
Sébastien Fournel +3 more
doaj +1 more source
Comparative Analysis of Metal Preloading Technologies in Batteries and Capacitors
EcoEnergy, EarlyView.Metal preloading strategies play an important role in efficient batteries and hybrid capacitors to compensate for the consumed metals at the first discharge. This article reviews recent progress in preloading technologies in lithium‐ion and other metal‐ion systems.
Xuexue Pan +3 more
wiley +1 more source
Otimização de métodos analíticos para determinação de Se03 2- e Cr 3+: aplicação em estudos de bio-disponibilidade destas espécies no meio aquoso [PDF]
, 2004 TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Curso de Química.Quando o interesse é caracterizar impacto ambiental, o movimento da diversidade de micro-nutrientes denominados essenciais, que também ...
Berejuck, Marcia Maria
core
, 1984 Solid-state Si and Al NMR, using high-resolution techniques, have been used to examine the dehydroxylation of the 2:1 phyllosilicate mineral pyrophyllite.
Frost, Raymond L., Barron, Peter F.
core +1 more source
Improved CMAS corrosion resistance of rare earth niobates by high-entropy and composite design
Journal of Materials Research and TechnologyThis study reports the preparation of two single-phase high-entropy rare-earth niobates (RE1/5Ho1/5Er1/5Y1/5Yb1/5)3NbO7, (RE = Ce, Lu), and two composite-phase high-entropy rare-earth niobates (RE1/5Ho1/5Er1/5Y1/5Yb1/5)3NbO7:(RE1/5Ho1/5Er1/5Y1/5Yb1/5 ...
Liujia Tian +6 more
doaj +1 more source
Effect of microstructure of modified diatomite on its adsorption properties
Хімія, фізика та технологія поверхні, 2017 The effect of microstructural changes caused by chemical modification of diatomite with aluminosilicate nanoparticles on its adsorption properties with respect to fluorine has been elucidated. The surface modification of diatomite with aluminosilicate is
T. Ia. Datsko, V. I. Zelentsov
doaj +1 more source