Results 21 to 30 of about 76,983 (257)

10-Methylisoalloxazine 5-oxide from synchrotron powder diffraction data

Acta Crystallographica Section E, 2010
The title compound [systematic name: 10-methylbenzo[g]pteridine-2,4(3H,10H)-dione 5-oxide], C11H8N4O3, consists of a large rigid isoalloxazine group which is approximately planar (r.m.s. deviation = 0.037 Å).
Michal Hušák, Jaroslav Maixner, Jan Rohlíček, Jana Cibulková, Radek Cibulka   +4 more
doaj   +1 more source

Crystal Structure of 17α-Dihydroequilin, C18H22O2, from Synchrotron Powder Diffraction Data and Density Functional Theory

Crystals, 2017
The crystal structure of 17α-dihydroequilin has been solved and refined using synchrotron X-ray powder diffraction data, and optimized using density functional techniques. 17α-dihydroequilin crystallizes in space group P212121 (#19) with a = 6.76849(1) Å,
James A. Kaduk, Amy M. Gindhart, Thomas N. Blanton   +2 more
doaj   +1 more source

Synthesis of Vanadium-Vanadium Carbide in-situ nanocomposites by high energy ball milling and spark plasma sintering [PDF]

Science of Sintering, 2016
In the present work, Vanadium-Vanadium Carbide (V-V2C) in-situ nanocomposites were synthesized by mechanically milling vanadium powders with 0.5 wt.% stearic acid.
Krishnan Vinoadh Kumar, Sinnaeruvadi Kumaran   +1 more
doaj   +1 more source

X-ray powder diffraction analysis of methionine sulfoxide

, 2001
Powder X-ray diffraction data for methionine sulfoxide, C5H11NO3S, obtained from the commercial amino acid, are presented in this work. Monoclinic cell parameters are: a = 15.500 Angstrom; b = 3.820 Angstrom; c = 13.490 Angstrom; 8=97.300 degrees.
Melnikov, P., Massabni, Antonio Carlos, Corbi, P. P., Massabni, Antonio Carlos [UNESP]   +3 more
core   +1 more source

Synchrotron X-ray powder diffraction study of the tetragonal-cubic phase transition in nanostructured ZrO2-Sc2O3 solid solutions

, 2008
The transition between tetragonal and cubic phases in nanostructured ZrO2-Sc2O3 solid solutions by high-temperature X-ray powder diffraction using synchrotron radiation is presented.
RECA, Noemi E. Walsoee de, Craievich, Aldo Felix, RAPP, Maria E. Fernandez de, ABDALA, Paula M., LAMAS, Diego G., Fantini, Marcia Carvalho de Abreu   +5 more
core   +1 more source

The Path of an Industrial Powder Small-Molecule Crystallographer [PDF]

Structural Dynamics
In this historical talk, I will begin with some of the early history of powder diffraction in the US and my relation to it. My industrial and (fairly- convoluted) external career intersected with a number of significant developments in hardware, software,
James A Kaduk
doaj   +1 more source

ID22 – the high-resolution powder-diffraction beamline at ESRF

Journal of Synchrotron Radiation, 2023
Following Phase 2 of the upgrade of the ESRF in which the storage ring was replaced by a new low-emittance ring along with many other facility upgrades, the status of ID22, the high-resolution powder-diffraction beamline, is described.
Andrew Fitch, Catherine Dejoie, Ezio Covacci, Giorgia Confalonieri, Ola Grendal, Laurent Claustre, Perceval Guillou, Jérôme Kieffer, Wout de Nolf, Sébastien Petitdemange, Marie Ruat, Yves Watier   +11 more
doaj   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

X-ray powder diffraction analysis of a silver(I)-aspartame complex

, 2006
Synchrotron X-ray powder diffraction (XRPD) data were collected for the silver(I)-aspartame complex [Ag(C14H17N2O5)]center dot 1/2 H2O. The complex was obtained from a stoichiometric mixture of aspartame (3-amino-N-(alpha-carboxyphenethyl)-succinamic ...
Paiva-Santos, C. O., Massabni, Antonio Carlos, Putvinskis, R., Cavicchioli, M., Massabni, Antonio Carlos [UNESP]   +4 more
core   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source