Results 31 to 40 of about 1,019,090 (317)

Comparison of Homogeneous and Heterogeneous Fenton and Sono-Fenton Decolorization of Titan Yellow: Doehlert Optimization, Response Surface Methodology, and Synergic Effects Study [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2021
In this work, four Fenton processes were used for the decolorization of titan yellow. Experimental conditions such as concentration of H2O2, pH, time, zero-valent iron dose, and concentration of Fe2+ were optimized by Doehlert experimental design and ...
Reza Tabaraki, Zahra Abedini
doaj   +1 more source

Homogeneous swarm of high-Reynolds-number bubbles rising within a thin gap. Part 1: Bubble dynamics [PDF]

open access: yes, 2012
The spatial distribution, the velocity statistics and the dispersion of the gas phase have been investigated experimentally in a homogeneous swarm of bubbles confined within a thin gap. In the considered flow regime, the bubbles rise on oscillatory paths
Billet, Anne-Marie   +3 more
core   +1 more source

Crystal Plasticity Simulations of Dislocation Slip and Twinning in α-Ti Single and Polycrystals

open access: yesMetals
A crystal plasticity finite element model is developed and implemented to numerically study the deformation behavior of hexagonal close-packed metals using α-titanium as an example.
Evgeniya Emelianova   +3 more
doaj   +1 more source

Homogeneity and h -homogeneity

open access: yesTopology and its Applications, 2013
A topological space \(X\) is \textit{homogeneous} if each of its points can be carried to any other via a homeomorphism of the space; \(X\) is \textit{\(h\)-homogeneous} if it is homeomorphic to each of its nonempty clopen subspaces. The author investigates conditions under which these two notions are related for zero-dimensional spaces. The first main
openaire   +4 more sources

THE COIN HOARD FROM THE SARNITSA VILLAGE, HASKOVO REGION. TOWARDS THE QUESTION OF CLARIFYING THE ORIGIN OF THASOS IMITATIONS OR BARBARIZATION [PDF]

open access: yesМатериалы по археологии и истории античного и средневекового Причерноморья
The article examines one of the well-preserved coin hoards consisting exclusively of imitations or barbarizations of tetradrachms traditionally minted on the island of Thasos.
Prokopov, I., Slavova, M.
doaj   +1 more source

Aspects of coordination by junction in Old Romanian [PDF]

open access: yesDiacronia, 2016
The approach of coordination by junction in a diachronic perspective aimed at establishing the discursive values of the connectors, in the integrated frame of these syntactic relation patterns, and the manner in which the literary norm selected the ...
Ștefan Găitănaru
doaj   +1 more source

Recoverable Palladium-Catalyzed Carbon-Carbon Bond Forming Reactions under Thermomorphic Mode: Stille and Suzuki-Miyaura Reactions

open access: yesMolecules, 2021
The reaction of [PdCl2(CH3CN)2] and bis-4,4′-(RfCH2OCH2)-2,2′-bpy (1a–d), where Rf = n-C11F23 (a), n-C10F21 (b), n-C9F19 (c) and n-C8F17 (d), respectively, in the presence of dichloromethane (CH2Cl2) resulted in the synthesis of Pd complex, [PdCl2[4,4 ...
Eskedar Tessema   +7 more
doaj   +1 more source

Homogeneous and Non-homogeneous Algorithms [PDF]

open access: yes, 2012
This (full) paper was accepted for publication in the 13th Panhellenic Conference on Informatics (PCI 2009), 10-12 September 2009, Corfu, Greece (8 pages)
openaire   +2 more sources

Homogeneous and Multiphase Analysis of Nanofluids Containing Nonspherical MWCNT and GNP Nanoparticles Considering the Influence of Interfacial Layering

open access: yesNanomaterials, 2021
The practical implication of nanofluids is essentially dependent on their accurate modelling, particularly in comparison with the high cost of experimental investigations, yet the accuracy of different computational approaches to simulate nanofluids ...
Tehmina Ambreen   +2 more
doaj   +1 more source

Improvement of Homogeneous Catalysts for Methanol Carbonylation to Acetic Acid: Effects of Three-Ethyl Phosphine and Three-Phenyl Phosphine as Ligands [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
The carbonylation of methanol is a catalytic homogeneous process that has been expanded for industrial applications. The metal-organic complexes utilized as homogeneous catalysts for acetic acid production encompass Co, Ru, Ir, Ni, and Rh-based catalysts.
Mohammad Shareei   +3 more
doaj   +1 more source

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