Results 1 to 10 of about 513,322 (308)

Obtaining homogeneous silicon in the process of alumothermic reduction of silicon dioxide

open access: yesEurasian Journal of Physics and Functional Materials, 2021
The influence of charge components on emergence of a homogeneous phase of silicon in the process of silicon dioxide reduction by aluminium has been studied. Optimal process parameters affecting the quality of the end product have been identified.
G. N. Chumikov   +3 more
doaj   +1 more source

Synthesis and characterization of hydrophobic coating materials based on alkoxy silane compounds [PDF]

open access: yesشیمی کاربردی روز, 2021
Recently, various methods have been developed for the preparation of hydrophilic surfaces such as wax solidification, lithography, electrochemical assemblies, hydrothermal, and sol-gel processes.
Jamal davarpanah   +3 more
doaj   +1 more source

FOCAC at Twenty A “Bargained Institutional Framework” for Shared Impacts

open access: yesChina Quarterly of International Strategic Studies, 2021
The eighth Forum on China-Africa Cooperation (FOCAC) in November 2021 marked two decades since the first major contemporary Sino–African meeting was held in Beijing in 2000.
Hagan Sibiri
doaj   +1 more source

Salt-Affected Soil Management Utilizing an Innovative Coated Sand Material—“Breathable Sand”

open access: yesEnvironmental Sciences Proceedings, 2022
An innovative air-permeable watertight material (hereinafter “Breathable Sand”) was invented and has been used in various agricultural applications. Proprietary coating and surface modification processes are applied on desert sand particles, and thus the
Yuming Su, Shengyi Qin, Chandra Dake
doaj   +1 more source

Thermal evolution effects on the properties of converting Cs-polluted soil into pollucite-base glass-ceramics for radioactive cesium immobilization

open access: yesJournal of Materiomics, 2021
The Fukushima nuclear accident in Japan on March 11, 2011, produced large amounts of Cs-polluted soil which must be controlled to prevent the spread of hazardous Cs into the environment.
Yong Yang   +10 more
doaj   +1 more source

Effect of silica particles on vulcanization performance, viscoelasticity and cell structure of EPDM

open access: yesCailiao gongcheng, 2021
Four different types of silica particles (A200, H2000, R812S, T36-5) were used as reinforcing fillers for EPDM to prepare microcellar EPDM foams by supercritical CO2.
WEN Hua-yin   +3 more
doaj   +1 more source

IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION [PDF]

open access: yesJournal of Petroleum Science and Technology, 2014
Bis(2-R-ind)ZrCl2 (R: H or phenyl) was supported on different types of silica by in situ impregnation method and used for ethylene polymerization.
saeid ahmadjo   +6 more
doaj   +1 more source

COMPARISON OF PBE AND SCAN FUNCTIONALS ON WATER-SILICA SURFACE INTERACTION

open access: yesJournal of Amasya University the Institute of Sciences and Technology, 2021
Interaction of alpha quartz phase of silica with water is investigated at the molecular level using density functional theory. First principles calculations were performed with PBE and SCAN functionals for similar binding geometries of water.
Ongun Ozcelik, Meryem Evecen
doaj   +1 more source

Spherical oligo-silicic acid SOSA disclosed as possible endogenous digitalis-like factor

open access: yesFrontiers in Endocrinology, 2015
Na+/K+-ATPase is a membrane ion-transporter protein, specifically inhibited by digitalis glycosides used in cardiac-therapy. The existence in mammals of some endogenous digitalis-like factors (EDLF) as presumed ATPase ligands is generally accepted.
Franz eKerek, Victor A Voicu
doaj   +1 more source

Iron Oxide–Silica Core–Shell Nanoparticles Functionalized with Essential Oils for Antimicrobial Therapies

open access: yesAntibiotics, 2021
Recent years have witnessed a tremendous interest in the use of essential oils in biomedical applications due to their intrinsic antimicrobial, antioxidant, and anticancer properties.
Cristina Chircov   +9 more
doaj   +1 more source

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