Results 41 to 50 of about 454,449 (380)
Kinetic Features of the Hydrogen Sulfide Sorption on the Ferro-Manganese Material
Metals, 2021 The kinetics of hydrogen sulfide sorption by the surface of a ferromanganese material containing in its composition a mixture of iron (II) and (III) oxides FeO × Fe2O3, takanelite (Mn, Ca) Mn4O9 × 3H2O and quartz SiO2, and which is samples of unrefined ...
Elizaveta Cheremisina +4 more
doaj +1 more source
Hydrodynamic Escape of Mineral Atmosphere from Hot Rocky Exoplanet. I. Model Description [PDF]
, 2020 Recent exoplanet statistics indicate that photo-evaporation has a great impact on the mass and bulk composition of close-in low-mass planets. While there are many studies addressing photo-evaporation of hydrogen-rich or water-rich atmospheres, no detailed investigation regarding rocky vapor atmospheres (or mineral atmospheres) has been conducted. Here,
arxiv +1 more source
Staged storage and magma convection at Ambrym Volcano, Vanuatu [PDF]
, 2016 New mineral-melt thermobarometry and mineral chemistry data are presented for basaltic scoriae erupted from the Mbwelesu crater of Ambrym volcano, Vanuatu, during persistent lava lake activity in 2005 and 2007.
Allard +60 more
core +1 more source
Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536 [PDF]
, 2010 A metamorphosed lithic clast was discovered in the CM chondrite Grove Mountains 021536, which was collected in the Antarctica by the Chinese Antarctic Research Exploration team.
Guan, Yunbin +4 more
core +1 more source
Hydration of silica and its role in the formation of quartz veins - Part 2
Substantia, 2019 The aqueous chemistry of silica and the formation of abundant polymeric silica species in natural sediment accumulations is set out in Part 1. Part 2 continues to describe the amorphous silica in sediments and presents more evidence for the formation of ...
John Elliston
doaj +1 more source
Nanostructural evolution of alkali-activated mineral wools [PDF]
, 2020 Mineral wools are the most widely used building insulation material worldwide. Annually, 2.5 million tonnes of mineral wool waste are generated in the EU alone, and this is a largely unutilised material that is landfilled or incinerated. However, mineral
Illikainen, M. +4 more
core +1 more source
Research of photorefractive properties in lithium niobate crystals by raman and photoinduced light scatering [PDF]
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2017 In Raman spectra of LiNbO3 crystals with photorefractive response in Y(ZX)Y scattering geometry a significant widening was detected of the band with frequency 630 cm-1 4A1(TO) that corresponds to totally symmetrical vibrations of oxygen octahedra.
N.V. Sidorov +2 more
doaj +1 more source
Deep mantle structure and the postperovskite phase transition [PDF]
, 2005 Seismologists have known for many years that the lowermost mantle of the Earth is complex. Models based on observed seismic phases sampling this region include relatively sharp horizontal discontinuities with strong zones of anisotropy, nearly vertical ...
Gurnis, M. +3 more
core +1 more source
Advanced Chinese Medicine, EarlyView.Therapeutic properties of thymoquinone. Abstract In this review, a comprehensive and systematic evaluation of the phytochemical constituents, traditional medicinal applications, current pharmacological research, toxicity, and nanobiotechnology of black cumin has been undertaken.
Raghvendra Pandey +2 more
wiley +1 more source
Mineralogia dos greisens da área Grota Rica, Plúton Água Boa, Pitinga, Amazonas
Brazilian Journal of GeologyResumo: O topázio-álcali-feldspato-granito, fácies mais evoluída do plúton Água Boa, foi afetado por processos de alteração hidrotermal, que culminaram com a formação de greisens e veios de quartzo, principais hospedeiros de mineralizações de Sn e ...
Gilmara Regina Lima Feio +4 more
doaj +1 more source