Results 31 to 40 of about 54,335 (262)

Achieving the Carbon-Neutral Production of Magnesia and Silica Products Using a HCl-Based Process in Serpentine Feedstock

open access: yesMaterials Proceedings, 2021
Magnesia is mainly produced from carbonate sources (magnesite (MgCO3)), and seawater brines (MgCl2). The calcination of magnesite and the precipitation of brine using quicklime (CaO) are processes that have significant CO2 footprints, even before ...
David Konlechner, Gregor Kappacher
doaj   +1 more source

Selected Properties of Overlaid Magnesium Based Composite Panels for Flooring

open access: yesApplied Sciences, 2020
The objective of this work was to evaluate some of the mechanical and physical properties of the flooring materials manufactured from panels having magnesia substrate overlaid with oak veneer (Querqus alba) and linoleum sheets.
Fidan Aslanova   +3 more
doaj   +1 more source

Clinical Practices and Experiences about Screen Time: From the Perspective of Child and Adolescent Psychiatrists in Turkey - An Online Survey

open access: yesScandinavian Journal of Child and Adolescent Psychiatry and Psychology, 2023
Both mental and physical preventable health problems related to screen time (ST) in children and adolescents are increasing. It is important that psychiatrists have awareness to prevent problems in this area.
Uzun Çakir Aylin Deniz   +4 more
doaj   +1 more source

Assessment of Magnesia Refractories Corrosion by Iron-Rich Slags

open access: yesMaterials Proceedings, 2022
High purity magnesia refractories have been tested for their resistance to iron-rich converter slags of ferronickel production. Laboratory tests were performed using crucibles made from magnesia refractories filled with slag at temperatures up to 1700 °C
Konstantinos Betsis   +3 more
doaj   +1 more source

The role of aggregates in the thermal stability of Mg-PSZ refractories for vacuum induction melting [PDF]

open access: yes, 2015
Mg-PSZ refractories used as vacuum induction melting crucibles are particle-reinforced composites with aggregate and matrix phases comprising fused zirconia.
Quadling, Amanda Gail
core   +1 more source

Hydrogen production by methanol steam reforming on NiSn/MgO-Al 2O3 catalysts: The role of MgO addition [PDF]

open access: yes, 2011
The effect of the magnesia loading on the surface structure and catalytic properties of NiSn/MgO-Al2O3 catalysts for hydrogen production by methanol steam reforming has been investigated. The catalysts have been obtained by impregnation of γ-Al2O3 by the
Bobadilla Baladrón, Luis Francisco   +7 more
core   +1 more source

Improved hydration resistance of magnesia by EDTA and ammonium phosphate as additives

open access: yesScience and Engineering of Composite Materials, 2017
The control of magnesia (MgO) hydration ratio is a key factor in refractory slurry processing. The volumetric expansion that follows this reaction can result in MgO product cracks as MgO greatly tends to react with water.
Zhang Wenzheng   +3 more
doaj   +1 more source

Hidratação e desidratação de óxido de magnésio em concretos refratários Magnesia sinter hydration-dehydration behavior in refractory castables

open access: yesCerâmica, 2008
Óxido de magnésio (MgO) rapidamente reage com água quando exposto a umidade ou durante a mistura de concretos refratários, gerando uma camada de hidróxido de magnésio, Mg(OH)2, na superfície das partículas. Durante a secagem desses materiais entre 350 ºC
R. Salomão, V. C. Pandolfelli
doaj   +1 more source

Magnesia cement in the MgO-CO2-H2O system

open access: yesMagazine of Civil Engineering, 2022
A detailed study of the MgO-CO2-H2O system allows creating new inorganic binders. The present research is focused on the process of structure formation during hydration and curing of magnesia composition from active magnesium oxide and magnesium ...
Mitina Natalia, Revva Inna, Mitina Anna
doaj   +1 more source

C-Reactive Protein: Pathophysiology, Diagnosis, False Test Results and a Novel Diagnostic Algorithm for Clinicians

open access: yesDiseases, 2023
The current literature provides a body of evidence on C-Reactive Protein (CRP) and its potential role in inflammation. However, most pieces of evidence are sparse and controversial.
Dimitra S. Mouliou
doaj   +1 more source

Home - About - Disclaimer - Privacy