Results 21 to 30 of about 670,277 (302)

Silica ash from waste palm fronds used as an eco-friendly, sustainable adsorbent for the Removal of cupper (II). [PDF]

open access: yesArchives of Environmental Protection, 2023
This study describes the creation of a low-cost silica material using a silicate extract as a precursor. This precursor is made from inexpensive palm frond waste ash through a simple calcination process at 500°C and a green extraction with water ...
Fatima A. Al-Qadri, Alsaiari Raiedhah
doaj   +1 more source

Silica, Hybrid Silica, Hydride Silica and Non-Silica Stationary Phases for Liquid Chromatography [PDF]

open access: yesJournal of Chromatographic Science, 2014
Free silanols on the surface of silica are the "villains", which are responsible for detrimental interactions of those compounds and the stationary phase (i.e., bad peak shape, low efficiency) as well as low thermal and chemical stability. For these reasons, we began this review describing new silica and hybrid silica stationary phases, which have ...
openaire   +2 more sources

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

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

Effects of nitric oxide synthase inhibitor - Nitro-L-Arginine Methyl Ester, on silica-inducated inflammatory reaction and apoptosis [PDF]

open access: yes, 2006
BACKGROUND: Although nitric oxide is overproduced by macrophages and neutrophils after exposure to silica, its role in silica-induced inflammatory reaction and apoptosis needs further clarification.
He Wang   +5 more
core   +1 more source

Cell-Mediated Deposition of Porous Silica on Bacterial Biofilms [PDF]

open access: yes, 2011
Living hybrid materials that respond dynamically to their surrounding environment have important applications in bioreactors. Silica based sol-gels represent appealing matrix materials as they form a mesoporous biocompatible glass lattice that allows for
McLarmore, Eric   +15 more
core   +1 more source

Remote control of diffusion from magnetic hollow silica microspheres [PDF]

open access: yes, 2013
Composite hollow core silica/iron oxide microparticles with the ability to store an encapsulated payload and release a defined quantity “on demand” by the application of a radiofrequency magnetic field were prepared.
Kovačík, Pavel   +2 more
core   +1 more source

The size and polydispersity of silica nanoparticles under simulated hot spring conditions [PDF]

open access: yes, 2008
The nucleation and growth of silica nanoparticles in supersaturated geothermal waters was simulated using a flow-through geothermal simulator system. The effect of silica concentration ([SiO2]), ionic strength (IS), temperature (T) and organic additives ...
Tobler, D.J., Knapp, J., Benning, L.G.
core   +1 more source

pH Coupled Co-Precipitation of Alkaline-Earth Carbonates and Silica - Complex Materials from Simple Chemistry [PDF]

open access: yes, 2017
The present work deals with the mineralization of alkaline-earth carbonates (mainly barium carbonate) from dilute silica solutions at high pH. It has for long been known that the concerted interaction between these purely inorganic components leads to ...
Eiblmeier, Josef
core   +1 more source

Preparation Of Nanoparticle Silica From Silica Sand and Quartzite By Ultrafine Grinding [PDF]

open access: yes, 2012
In this work nanoparticle silica was synthesized using silica sand and quartzite by top down approach using ultrafine grinding. Silica sand was obtained from Bangka island while quartzite rocks from Rokan Hulu, Riau.
Siti , Rochani   +2 more
core   +1 more source

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