Results 11 to 20 of about 366,434 (291)

A carbamazepine-indomethacin (1:1) cocrystal produced by milling [PDF]

open access: yes, 2011
An X-ray amorphous mixture of carbamazepine and indomethacin transforms upon annealing to produce a novel 1:1 cocrystal, whose structure has been determined from laboratory powder X-ray diffraction (PXRD ...
Buckton, Graham   +6 more
core   +1 more source

Zeolite phi: a physical mixture of chabazite and offretite [PDF]

open access: yes, 1992
Zeolite Phi is synthesized by two methods reported previously. Results from X-ray powder diffraction and scanning electron microscopy suggest that the materials are physical mixtures of chabazite and offretite; one sample has a small amount of ...
Annen, Michael J.   +2 more
core   +1 more source

Sub-nanosecond X-ray powder diffraction

open access: yesJournal of Applied Crystallography, 1990
The X-rays emitted from a laser-produced plasma have been used to obtain powder diffraction patterns with exposures of less than a nanosecond. The X-rays were produced by focusing approximately 50 J of 0.53 μm laser light in a 600 ps (FWHM) pulse to a tight (~100 μm diameter) spot on a solid titanium target.
Woolsey, N.C., Wark, J.S., Riley, David
openaire   +2 more sources

Nanocrystalline materials studied by powder diffraction line profile analysis [PDF]

open access: yes, 2007
X-ray powder diffraction is a powerful tool for characterising the microstructure of crystalline materials in terms of size and strain. It is widely applied for nanocrystalline materials, especially since other methods, in particular electron microscopy ...
Dubravina   +29 more
core   +1 more source

Hydrothermal synthesis and crystal structures of a novel Keggin-type polyoxometalate based on 1,10-phenanthroline

open access: yesCumhuriyet Science Journal, 2021
Herein a novel inorganic-organic hybrid Keggin-type heteropolymolybdate [Ni2Na(C12H8N2)4(BMo12O40)(H2O)2] (1) has been synthesized under hydrothermal conditions in aqueous solution.
Mükerrem Fındık   +4 more
doaj   +1 more source

X-ray characterization by energy-resolved powder diffraction

open access: yesPhysical Review Accelerators and Beams, 2016
A method for single-shot, nondestructive characterization of broadband x-ray beams, based on energy-resolved powder diffraction, is described. Monte-Carlo simulations are used to simulate data for x-ray beams in the keV range with parameters similar to ...
G. Cheung, S. M. Hooker
doaj   +1 more source

Using hydrophilic ionic liquid, [bmim]BF4-ethylene glycol system as a novel media for the rapid synthesis of copper nanoparticles. [PDF]

open access: yesPLoS ONE, 2012
In this work, we present a novel method for the synthesis of copper nanoparticles. We utilize the charge compensatory effect of ionic liquid [bmim]BF(4) in conjunction with ethylene glycol for providing electro-steric stabilization to copper ...
Manika Dewan   +4 more
doaj   +1 more source

X-RAY POWDER DIFFRACTION IN QUALITY CONTROL OF MEDICINES

open access: yesРегуляторные исследования и экспертиза лекарственных средств, 2018
X-ray powder diffraction is one of the methods used for detection and analysis of polymorphic forms of pharmaceutical substances. The article elucidates the concept of polymorphism, briefly explains physical characteristics of this phenomenon, conditions
V. S. Kuzmin   +2 more
doaj   +1 more source

Green Synthesis and Characterization of Copper Oxide Nanoparticles Using Coffee Powder Extract [PDF]

open access: yesJournal of Nanostructures, 2016
The use of plant extract is generating interest of researchers toward cost effective and eco-friendly green synthesis of nanoparticles. In the present work, Cupric oxide nanoparticles were synthesized using coffee powder extracts by the sol-gel method at
Saeid Taghavi Fardood, Ali Ramazani
doaj   +1 more source

HALOGEN-BONDED SUPRAMOLECULAR ARCHITECTURES INVOLVING 2,7-DIPYRIDYLFLUORENE AND 1,3,5-TRIFLUORO-2,4,6-TRIIODOBENZENE TECTONS – A SPECTACULAR EVOLUTION FROM CATEMERS TO 2D HALOGEN BOND ORGANIC FRAMEWORKS (XBOF)

open access: yesStudia Universitatis Babes-Bolyai Chemia, 2022
A spectacular 2D Halogen Bond Organic Framework (XBOF) was prepared by the mechanochemical solvent-drop grinding method (SCD) starting from 2,7-dipyridylfluorene and 1,3,5-trifluoro-2,4,6-triiodobenzene tectons.
Lidia CĂTA   +5 more
doaj   +1 more source

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