Results 11 to 20 of about 205,983 (305)

Experimental analysis of SiO2 and CNT nanoparticles effects on the compressive strength of the concrete [PDF]

open access: yesAnalytical and Numerical Methods in Mining Engineering, 2022
This article is focused on the compressive strength of the concrete using silica oxide (SiO2) and carbon nanotube (CNT) nanoparticles. The concrete samples are mixed with a combination of nanoparticles with different percentages.
شهرام قائدی فراموشجان   +2 more
doaj   +1 more source

Structural and physical properties of Co1-xCdxFe2O4 /SiO2 nanocomposites [PDF]

open access: yesProgress in Physics of Applied Materials, 2022
The preparation of Co1-xCdxFe2O4/SiO2 nanocomposites with core/ shell structure involved the coating of SiO2 using Stöber method on Co1-xCdxFe2O4 and the use of facile thermal treatment method for synthesizing nanoparticles.
Rahmat Ghasemi   +3 more
doaj   +1 more source

A comparative study of freeze-drying heat transfer in polymeric vials and glass vials

open access: yesScientific Reports, 2023
Implementation of polymeric vials for freeze-dried drug products has been practically non-existent because of unique moisture barrier and thermodynamic technical challenges.
Morteza Sarmadi   +5 more
doaj   +1 more source

Reactive sputtering deposition of SiO2 thin films [PDF]

open access: yesJournal of the Serbian Chemical Society, 2008
SiO2 layers were deposited in a UHV chamber by 1 keV Ar+ ion sputtering from a high purity silicon target, using different values of the oxygen partial pressure (5×10-6-2×10-4 mbar) and of the ion beam current on the target (1.67-6.85 mA).
Radović Ivan   +3 more
doaj   +1 more source

Investigation of the structure activity relationship of palladium-bismuth catalyst in acetylene hydrogenation

open access: yesHe jishu, 2023
BackgroundEthylene is an important raw material in petrochemical industry. Semi-hydrogenation of acetylene in an ethylene is an industrially important process.
TAO Xin   +8 more
doaj   +1 more source

Textile Materials Treatment With Mixture of TiO2:N and SiO2 Nanoparticles for Improvement of Their Self-Cleaning Properties

open access: yesJournal of Natural Fibers, 2022
This study addresses the deposition with improved adhesion of TiO2:N/SiO2 mixture, with different concentrations of the nano-powders (NPs) (1:0,5; 1:1 and 1:1,5) on 100% cotton fabrics. The characteristics of the deposited thin films were investigated by
A. O. Mateescu   +8 more
doaj   +1 more source

XRD Measurement for Particle Size Analysis of PMMA Polymer Electrolytes with SiO2

open access: yesInternational Journal of Technology, 2022
PMMA-based polymer electrolytes with LiCF3SO3 lithium salt, EC plasticizer, and SiO2 filler are prepared using the solution cast method. SiO2 filler sizes at 10 ?m and 63 ?m are used to estimate the particle size in the polymer electrolytes system ...
Cha Chee Sun, Ah Heng You, Lay Lian Teo
doaj   +1 more source

Mechanical and Fracture Characterization of Epoxy/PLA/Graphene/SiO2 Composites

open access: yesFracture and Structural Integrity, 2023
This work investigated the effects of graphene and SiO2 addition on the mechanical and fracture properties of epoxy (80%) Poly Lactic acid (PLA) (20 %) composites. Epoxy-PLA composites were loaded with graphene and SiO2 (0.1-0.5 wt.
K. Dileep, A. Srinath
doaj   +1 more source

High-efficient fabrication of core-shell-shell structured SiO2@GdPO4:Tb@SiO2 nanoparticles with improved luminescence [PDF]

open access: yesRoyal Society Open Science, 2020
SiO2@GdPO4:Tb@SiO2 nanoparticles with core-shell-shell structure were successfully synthesized by a cheap silane coupling agent grafting method at room temperature.
He Bai   +9 more
doaj   +1 more source

Extraction of Silica (SiO2) from Rare-Earth Metal Zircon (ZrSiO4) as Lithium-Ion Battery Anode Material

open access: yesJurnal Kimia Sains dan Aplikasi, 2023
Zircon is a rare metal natural mineral composed of zirconia and silica. The silica content in zircon can be used as anode material for lithium-ion batteries because of the low cost and high theoretical capacity.
Putri Lestari   +5 more
doaj   +1 more source

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