Results 31 to 40 of about 2,409 (288)

Electrocatalytic activity of Schiff base containing copper phthalocyanines towards the detection of catechol

open access: yes, 2021
In this study, four new copper phthalocyanine complexes were synthesised and studied as electrocatalysts for the detection of catechol. Two of these complexes were derived from a symmetrical benzaldehyde phthalocyanine complex via the condensation of the
Sen, Pinar   +2 more
core   +1 more source

Constructing Efficient Mesh-Based Global Grid Systems with Reduced Distortions

open access: yesISPRS International Journal of Geo-Information
Recent advancements in geospatial technologies have significantly expanded the volume and diversity of geospatial data, unlocking new and innovative applications that require novel Geographic Information Systems (GIS).
Lakin Wecker   +2 more
doaj   +1 more source

Aerodynamic Simulation of Helicopter Based on Polyhedron Nested Grid Technology [PDF]

open access: yesApplied Sciences, 2020
In this paper, a computational fluid dynamics (CFD) simulation method based on the polyhedral nested grid is developed. By comparing the simulation and test results of the hovering flow field of the Caradonna–Tung rotor, the forward flight flow field of the AH-1G rotor, the interference flow field of the Robin rotor/fuselage, and the hovering and ...
Chenglong Zhou, Ming Chen
openaire   +2 more sources

Bis(2-{[2-(isopropylazaniumyl)ethyl]iminomethyl}-6-methoxyphenolato)copper(II) bis(thiocyanate)

open access: yesActa Crystallographica Section E, 2011
The asymmetric unit of the title compound, [Cu(C13H20N2O2)2](NCS)2, contains one half-dication, located on an inversion center, and one thiocyanate anion.
Lin Yuan
doaj   +1 more source

catena-Poly[(μ-anilido)(μ-1,2-dimethoxyethane-κ3-O,O′:O)sodium]

open access: yesActa Crystallographica Section E, 2012
In the title compound, [Na(C6H5NH)(C4H10O2)], the Na+ cation is coordinated by the N atoms of two anilide anions, two O atoms of a chelating 1,2-dimethoxyethane (dme) ligand and one O atom of an adjacent dme ligand. The coordination polyhedron around Na+
Phil Liebing   +2 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Grain Refinement During Severe Plastic Deformation and Similitude of Subgrain Formation: A Molecular Dynamics Study

open access: yesAdvanced Engineering Materials, EarlyView.
Molecular dynamics is used to investigate structure refinement during severe plastic deformation. The results show similitude with experimental data. Molecular dynamics simulations of severe plastic deformation of monocrystalline and polycrystalline samples by multiaxial compression of aluminum are carried out.
Roberto B. Figueiredo
wiley   +1 more source

Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina

open access: yesAdvanced Functional Materials, EarlyView.
Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand   +5 more
wiley   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

open access: yesAdvanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum   +5 more
wiley   +1 more source

Three phenanthroline–metal complexes with topologically similar but geometrically different conformations

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2016
The structures of three related complexes of general formula M(pds)(nab)2 [pds is the peroxodisulfate anion and nab is an nitrogen-containing aromatic base], viz.
Miguel Angel Harvey   +2 more
doaj   +1 more source

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