Results 11 to 20 of about 54,415 (256)

Thermal Performance Analysis of a Solar Reactor Designed for Syngas Production

open access: yesEnergies, 2020
The design elements considered during the construction of a thermochemical reactor determine its thermal performance. This current study investigated the effect of design elements, such as boundary layer thickness, insulating materials for the outlet ...
Yabibal Getahun Dessie   +6 more
doaj   +1 more source

Devitrification of Quartz Glass [PDF]

open access: yesNature, 1917
IN an article by Audley, published in the Transactions of the Ceramic Society, vol. xvi., part i., p. 124, it is stated that the addition of zirconia to fused quartz gives a product resembling quartz opaque glass, but in many respects superior to quartz glass, and less easily devitrified.
openaire   +3 more sources

Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson Peak

open access: yesApplied Sciences, 2021
Z-cut single-crystal quartz and vitreous silica (silica glass or fused silica) were evaluated for use as reference materials for terahertz and microwave measurements of complex permittivity, with Z-cut quartz confirmed as being suitable.
Mira Naftaly, Andrew Gregory
doaj   +1 more source

Technological procedure for processing the quartz resources in order to obtain the assortment for water glass [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2016
Tests on quartz raw material from the deposit 'Bijela Stijena - Skočić' have included: grading, washing, grinding and magnetic separation. Test results have shown that the assortment of required sand quality can be obtained for water glass.
Sekulić Živko   +3 more
doaj   +1 more source

Phase Transformations upon Formation of Transparent Lithium Alumosilicate Glass-Ceramics Nucleated by Yttrium Niobates

open access: yesCeramics, 2023
Phase transformations in the lithium aluminosilicate glass nucleated by a mixture of yttrium and niobium oxides and doped with cobalt ions were studied for the development of multifunctional transparent glass-ceramics.
Olga Dymshits   +8 more
doaj   +1 more source

PROPERTIES OF STRUCTURAL LIGHTWEIGHT EXPANDED CLAY CONCRETE WITH DIFFERENT TYPES OF POROUS SANDS [PDF]

open access: yesJournal of Engineering Science (Chişinău), 2020
In this work, the strength, water tightness and average density of modified expanded clay lightweight on different types of sands were investigated. Quartz sand, expanded clay sand and sand from granulated foam glass were used.
Kroviakov, Sergii   +2 more
doaj   +1 more source

Room temperature gas-solid reaction of titanium on glass surfaces forming a very low resistivity layer

open access: yesAIP Advances, 2016
Titanium films were deposited on quartz, glass, polyamide and PET substrates in a high vacuum system at room temperature and their electrical resistance monitored in vacuo as a function of thickness.
Hugo Solís   +3 more
doaj   +1 more source

Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating Degassing

open access: yesYankuang ceshi, 2019
BACKGROUND The analysis of gas chemical composition in rock and mineral can provide important information and constraints for the study of different geochemical processes of lithospheric mantle, redox environment in the earth, and water circulation in ...
GAO Zi-han   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy