Results 21 to 30 of about 366,434 (291)

Improved Solubility and Dissolution Rate of Ketoprofen by the Formation of Multicomponent Crystals with Tromethamine

open access: yesCrystals, 2022
This study aims to improve the dissolution rate of ketoprofen by preparing multicomponent crystals with tromethamine. The multicomponent crystals (equimolar ratio) of ketoprofen and tromethamine were prepared by the solvent co-evaporation method.
Lili Fitriani   +7 more
doaj   +1 more source

Crystal Structural Determination of SrAlD5 with Corner-Sharing AlD6 Octahedron Chains by X-ray and Neutron Diffraction

open access: yesCrystals, 2018
Aluminium-based complex hydrides (alanates) composed of metal cation(s) and complex anion(s), [AlH4]− or [AlH6]3− with covalent Al–H bonds, have attracted tremendous attention as hydrogen storage materials since the discovery of the reversible hydrogen ...
Toyoto Sato   +5 more
doaj   +1 more source

Determination of the crystallite size and crystal structure of magnesium powder by x-ray diffraction

open access: yesJurnal Natural, 2020
Magnesium powder has become an important material in the development of science and technology such as alloy and hydrogen storage. In this work, the chemical composition, crystallite size, and crystal structure of the magnesium powder sample have been ...
ISMAIL ISMAIL   +3 more
doaj   +1 more source

Investigation of element-specific and bulk magnetism, electronic and crystal structures of La{0.70}Ca{0.30}Mn{1-x}Cr{x}O{3} [PDF]

open access: yes, 2012
The magnetic interactions in La{0.70}Ca{0.30}Mn{1-x}Cr{x}O{3} (x = 0.15, 0.50 and 0.70) are investigated by x-ray absorption spectroscopy (XAS), x-ray magnetic circular dichroism (XMCD), high-resolution x-ray powder diffraction, and bulk magnetization ...
Ardito, F. M.   +4 more
core   +2 more sources

Thermal analysis, X-ray powder diffraction and electron microscopy data related with the production of 1:1 Caffeine:Glutaric Acid cocrystals

open access: yesData in Brief, 2016
The data presented in this article are related to the production of 1:1 Caffeine:Glutaric Acid cocrystals as part of the research article entitled “Green production of cocrystals using a new solvent-free approach by spray congealing” (Duarte et al., 2016)
Íris Duarte   +3 more
doaj   +1 more source

Sonochemical Synthesis of a Cobalt(II) Coordination Polymer Nano-structure with azo ligand: A New Precursor for Preparation Pure Phase of Co3O4 Nanostructure [PDF]

open access: yesJournal of Nanostructures, 2013
A new nano-sized cobalt(II) coordination polymer, (CoL1).0.5DMF.1.5CH3OH(1); [H2L1 = 5-(4-Carboxy phenyl azo) salicyilic acid] has been synthesized by a sonochemical method.
M. Hosseyni Sadr   +2 more
doaj   +1 more source

X-ray resonant powder diffraction [PDF]

open access: yesThe European Physical Journal Special Topics, 2012
X-ray resonant diffraction can be applied in structural chemistry studies on powder samples. It enables an important limitation of powder diffraction to be overcome. This limitation is related to the low ability of powder diffraction to differentiate elements with close atomic numbers when they occupy the same or close crystallographic sites (mixed ...
Palancher, Hervé   +4 more
openaire   +3 more sources

Crystallite size distribution and dislocation structure determined by diffraction profile analysis: principles and practical application to cubic and hexagonal crystals [PDF]

open access: yes, 2001
Two different methods of diffraction profile analysis are presented. In the first, the breadths and the first few Fourier coefficients of diffraction profiles are analysed by modified Williamson-Hall and Warren-Averbach procedures. A simple and pragmatic
Borbély, A.   +3 more
core   +1 more source

Tinaksite and Tokkoite: X-ray Powder Diffraction, Optical, and Vibrational Properties

open access: yesCrystals, 2022
In this study, natural tinaksite (K2Ca2NaTi[Si7O18OH]O) and tokkoite (K2Ca4[Si7O18OH](OH,F)) collected in charoite rocks of the Murun alkaline massif (Siberia, Russia) were examined by X-ray diffraction and optical and vibrational spectroscopic methods ...
Ekaterina Kaneva, Roman Shendrik
doaj   +1 more source

High-temperature synthesis, single-crystal X-ray and neutron powder diffraction, and materials properties of Sr3Ln10Si18Al12O18N36 (Ln = Ce, Pr, Nd) [PDF]

open access: yes, 2000
The novel oxonitridoaluminosilicates (sialons) Sr3Ln10Si18Al12O18N36 (Ln = Ce, Pr, Nd) were obtained by the reaction of the respective lanthanide metals with Si(NH)2, SrCO3, and AlN using a radiofrequency furnace at temperatures between 1550–1650°C.
Henry, Paul F.   +4 more
core   +1 more source

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