Results 21 to 30 of about 5,411 (251)

Performance of Thermal-, Acid-, and Mechanochemical-Activated Montmorillonite for Environmental Protection from Radionuclides U(VI) and Sr(II)

open access: yesEng, 2023
Low-cost sorption materials based on the clay mineral of the smectite group—montmorillonite—were used for the removal of radionuclides uranium (VI) and strontium (II) from contaminated water.
Iryna Kovalchuk
doaj   +1 more source

X-ray structural analysis of the BaO and TiO2 starting compounds and initial mechanochemical activation [PDF]

open access: yesPodzemni Radovi, 2023
The aim of this research was to obtain an initial characterization of the BaO and TiO2 components, as well as to conduct preliminary research into the possibility of activating the initial components in order to obtain barium titanate. Chemical and X-ray
Đorđević Nataša   +2 more
doaj  

A Mechanochemical Model of Flagellar Activity

open access: yesBiophysical Journal, 1971
A theory is presented which quantitatively links the physical properties of a flagellum with parameters which characterize the chemical reactions responsible for deforming the flagellum. Realistic values for the wave parameters are predicted when order-of-magnitude values for the appropriate constants are used.
Miles, C.A., Holwill, M.E. J.
openaire   +2 more sources

Intracellular Mechanochemical Waves in an Active Poroelastic Model [PDF]

open access: yesPhysical Review Letters, 2013
Many processes in living cells are controlled by biochemical substances regulating active stresses. The cytoplasm is an active material with both viscoelastic and liquid properties. We incorporate the active stress into a two-phase model of the cytoplasm which accounts for the spatiotemporal dynamics of the cytoskeleton and the cytosol.
Radszuweit, Markus   +3 more
openaire   +4 more sources

Leaching of gold from a mechanically and mechanochemically activated waste [PDF]

open access: yesActa Montanistica Slovaca, 2010
The intensification of leaching of gold from a waste using mechanical activation (milling in water) and mechanochemical activation(milling in thiourea solution) were studied as the pretreatment steps.
Jana Ficeriová, Peter Baláž
doaj  

Kinetics of specific surface area change using the Boltzmann model [PDF]

open access: yesScience of Sintering, 2009
During sintering of the 2MgO-2Al2O3-5SiO2 system, cordierite, an attractive ceramic material because of its properties, is obtained. Effects of mechanochemical activation of stoichiometric mixtures, performed to investigate possibilities of lowering ...
Đorđević N.   +5 more
doaj   +1 more source

Mechanochemical Lignin-Mediated Strecker Reaction

open access: yesMolecules, 2017
A mechanochemical Strecker reaction involving a wide range of aldehydes (aromatic, heteroaromatic and aliphatic), amines, and KCN afforded a library of α-aminonitriles upon mechanical activation.
Saumya Dabral   +4 more
doaj   +1 more source

Influence of mechanical activation on elelctrical properties of cordierite ceramics [PDF]

open access: yesScience of Sintering, 2008
The goal of the presented research was to find a possible correlation of the process parameters and functional properties of cordierite based ceramic materials.
Đorđević N.G., Jovanić P.B.
doaj   +1 more source

Glycerol Valorization towards a Benzoxazine Derivative through a Milling and Microwave Sequential Strategy

open access: yesMolecules, 2022
Glycerol and aminophenol intermolecular condensation has been investigated through a milling and microwave-assisted sequential strategy, towards the synthesis of a benzoxaxine derivative. Mechanochemical activation prior to the microwave-assisted process
Miguel Ángel Torres-Pastor   +7 more
doaj   +1 more source

Mechanochemical synthesis of Pb2MgWO6 piezoceramics with alloying additives [PDF]

open access: yesMATEC Web of Conferences, 2021
Pb2MgWO6 was prepared using mechanochemical activation and sintering in a temperature range of 600-1000ºÑ in three ways: 1) from oxides of the corresponding metals, 2) using MgWO4 precursor; and 3) in the presence of over-stoichiometric amounts (1wt ...
Shevchenko Natalya S., Gusev Alexey A.
doaj   +1 more source

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