Results 11 to 20 of about 1,113,780 (339)

Fourier transform infrared spectrophotometry and X-ray powder diffractometry as complementary techniques in characterizing clay size fraction of kaolin

Journal of Applied Sciences and Environmental Management, 2005
This study aimed at demonstrating complementary roles offered by both Fourier transform infrared (FTIR) spectrophotometry and x-ray powder diffraction (XRPD) techniques in characterizing clay size fraction of kaolins.
Georges-Ivo E Ekosse
doaj   +1 more source

Crystal Structure Dependence of the Energy Transfer from Tb(III) to Yb(III) in Metal–Organic Frameworks Based in Bispyrazolylpyridines

Crystals, 2020
Luminescent mixed lanthanide metal−organic framwork (MOF) materials have been prepared from two polyheterocyclic diacid ligands, 2,6-bis(3-carboxy-1-pyrazolyl)pyridine and 2,6-bis(4-carboxy-1-pyrazolyl)pyridine.
Paloma Martinez-Martin, Josefina Perles, Juan Carlos Rodriguez-Ubis   +2 more
doaj   +1 more source

X-Ray sum frequency generation; direct imaging of ultrafast electron dynamics [PDF]

, 2018
X-ray diffraction from molecules in the ground state produces an image of their charge density, and time-resolved X-ray diffraction can thus monitor the motion of the nuclei.
Bennett, Kochise, Kowalewski, Markus, Mukamel, Shaul, Rouxel, Jérémy R.   +3 more
core   +2 more sources

X-ray high-resolution diffraction using refractive lenses [PDF]

, 2005
Refractive x-ray lenses have recently been applied for imaging and scanning microscopy with hard x rays. We report the application of refractive lenses in an optical scheme for high-resolution x-ray diffraction, performed at a high brilliance synchrotron
Drakopoulos, Michael, Schilling, Jörg, Snigirev, Anatoly, Snigireva, Irina   +3 more
core   +1 more source

Using GIS to understand the environmental chemistry of manganese contaminated soils, Kgwakgwe area, Botswana

Journal of Applied Sciences and Environmental Management, 2005
This study aimed at establishing the spatial distribution of manganese (Mn) and iron (Fe) within the periphery of a manganese oxide (Mn oxide) ore abandoned mine.
Georges Ekosse, Paul S Fouche
doaj   +1 more source

X-ray ptychography on low-dimensional hard-condensed matter materials [PDF]

, 2019
Tailoring structural, chemical, and electronic (dis-)order in heterogeneous media is one of the transformative opportunities to enable new functionalities and sciences in energy and quantum materials.
Burdet, N, Chen, B, Harder, R, Robinson, IK, Shi, X, Streubel, R, Xiong, G   +6 more
core   +3 more sources

Environmental association of iron minerals and iron concentrations in soils close to an abandoned manganese mine – a multivariate analytical approach

Journal of Applied Sciences and Environmental Management, 2006
Environmental association of iron (Fe) minerals and Fe concentrations in soils close to the Kgwakgwe Mn oxide ore abandoned mine, Botswana are investigated in this study.
Georges-Ivo E Ekosse, Paul S Fouche
doaj   +1 more source

Multivariate analyses of heavy metals in soils and Colophospermum mopane leaves around the Selebi Phikwe nickel-copper mine and smelter/concentrator plant area, Botswana

Journal of Applied Sciences and Environmental Management, 2005
This study was conducted in order to ascertain levels of concentrations and areal distribution of heavy metals in the surface soils and vegetation around the Selebi Phikwe Ni-Cu mine and smelter/concentrator plant, Botswana. One hundred and forty samples
E Georges-Ivo Ekosse, J Catherine Ngila, Ntonghanwah Forcheh   +2 more
doaj   +1 more source

The Limits of X-ray Diffraction Theory

Crystals, 2023
X-ray diffraction theory allows the interpretation of experiments to build a structural model that fits the collected data. As with any experimental science, the observations are subject to uncertainty through the instrument and user limitations ...
Paul F. Fewster
doaj   +1 more source

X-ray diffraction study of cadmium hydroxyapatite [PDF]

, 2005
Solid solutions of cadmium and calcium hydroxyapatite [Ca10−x Cdx (PO4)6 (OH)2 (0 ≤ x ≤ 10)] were synthesized by a wet process in a basic medium. The lattice dimensions of these compounds vary linearly with the atom percent cadmium.
Ait Ichou, Yhya, Lacout, Jean-Louis, Maroufi, N., Nounah, Abederrahman, Savariault, Jean-Michel   +4 more
core   +2 more sources