Results 21 to 30 of about 38,739 (261)

Occurrences of Rare-Earth Elements in Heavy Mineral Sand Deposits, Coastal Plain, Georgia

open access: yes, 2023
Rare earth elements (REE) are critical constituents in many modern technologies and products. Five samples (beach sands, gangue from Upper Coastal Plain Creataceous-early Tertiary sandstones, and Ti-Zr heavy mineral concentrates) were collected from ...
Al-Zehhawi, Mustafa
core   +1 more source

The Mineral Elements in Animal Nutrition [PDF]

open access: yesScientific American, 1919
n ...
openaire   +1 more source

Catalytic Activity of Thermolyzed [Co(NH3)6][Fe(CN)6] in CO Hydrogenation Reaction

open access: yesMolecules, 2021
Currently, the processes of obtaining synthetic liquid hydrocarbons and oxygenates are very relevant. Fischer-Tropsch synthesis (FTS) is the most important step in these processes. The products of thermal destruction in argon of the mixture [Co(NH3)6][Fe(
Alevtina N. Gosteva   +5 more
doaj   +1 more source

Extraction of Bioactive Components from Chamaenerion angustifolium (L.) Scop. with Choline Chloride and Organic Acids Natural Deep Eutectic Solvents

open access: yesMolecules, 2022
Chamaenerion angustifolium (L.) Scop. (fireweed) is a perennial herbaceous plant of the Onagraceae family widely used in folk and scientific medicine. It is a promising source of bioactive components.
Nikita Tsvetov   +3 more
doaj   +1 more source

Thermal insulation materials on the basis of microsilica [PDF]

open access: yesVestnik MGTU, 2015
The main areas of silica application have been examined in the paper. It has been found that microsilica can be used in manufacture of wollastonite-containing ceramic matrixes and composite materials with expanding shale and nepheline-process waste as ...
Suvorova O.V.   +2 more
doaj  

Spectral Tomography for 3D Element Detection and Mineral Analysis

open access: yes, 2021
This paper demonstrates the potential of a new 3D imaging technique, Spectral Computed Tomography (sp-CT), to identify heavy elements inside materials, which can be used to classify mineral phases.
Axel D. Renno   +3 more
core   +1 more source

Alkali-Activated Metakaolins: Mineral Chemistry and Quantitative Mineral Composition [PDF]

open access: yes, 2022
The reaction products resulting from the alkali-activation of metakaolin are impacted by the composition of the initial kaolin, and amount of alkali-activated kaolinite and water. The present study focused on analyzing these parameters on the metakaolins
Zdeněk Klika   +13 more
core   +1 more source

COMPUTER MODELLING OF ORDERING OF STRUCTURAL UNITS AND CLUSTERS IN LITHIUM NIOBATE CRYSTALS. [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2011
Modeling of the processes occurring at formation energetically equilibrium oxygen-octahedral clusters in the ferroelectric phase of stoichiometrical of lithium niobate crystal (LiNbO3) is executed at qualitative level.
O.R. Starodub   +4 more
doaj  

Screening and Breeding Utilization of Wheat Germplasm Resources Rich in Beneficial Mineral Elements

open access: yesLiang you shipin ke-ji, 2021
Beneficial mineral elements are one of the indispensable nutrients in human body.With the adjustment of diet structure,people’s demand for mineral elements in wheat is becoming stronger and stronger.Therefore,screening wheat germplasm resources with low ...
WANG Wei   +7 more
doaj   +1 more source

COMPARATIVE STUDIES OF SOLID SOLUTION Li0,125Na0,875NbO3 SYNTHESIZED AT ATMOSPHERIC AND HIGH PRESSURES [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2013
Structural and electrical properties of a solid solution (SS) of Li0,125Na0,875NbO3 are studied. Synthesis of the solid solution of Li0,125Na0,875NbO3 under high pressure achieves more highly ordered structure.
M.N. Palatnikov   +3 more
doaj  

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