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Correlated X-ray/optical variability in the quasar MR 2251-178
(BLACKWELL, 2008-09-21)
Emission from active galactic nuclei is known to vary strongly over time over a wide energy band, but the origin of the variability and especially of the interband correlations is still not well established. Here we present ...
Mechanochemical synthesis of Bi4Ti3O12
(2006-12-01)
Our efforts were directed to the preparation of bismuth titanate - Bi 4e;Ti3O12 (BIT) by mechanically assisted synthesis. The mechanical activation was applied to prepare bismuth titanate, Bi4e;Ti3O12, from bismuth oxide, ...
Mechanochemical synthesis of Bi4Ti3O12
(2006-12-01)
Our efforts were directed to the preparation of bismuth titanate - Bi 4e;Ti3O12 (BIT) by mechanically assisted synthesis. The mechanical activation was applied to prepare bismuth titanate, Bi4e;Ti3O12, from bismuth oxide, ...
A powder X-ray diffraction method for detection of polyprenylated benzophenones in plant extracts associated with HPLC for quantitative analysis
(ELSEVIER SCIENCE BV, 2011)
A robust, direct, rapid and non-destructive X-ray diffraction crystallography method to detect the polyprenylated benzophenones 7-epi-clusianone (1) and guttiferone A (2) in extracts from Garcinia brasiliensis is presented. ...
Solid-phase preconcentration and determination of mercury(II) using activated carbon in drinking water by X-ray fluorescence spectrometry
(Wiley, 2013-01)
A novel and simple method was developed for the preconcentration and determination of mercury(II) from hydrochloric acid solutions through their adsorption on Aliquat 336 (tri-octylmethylammonium chloride)-activated carbon. ...
Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter
(Elsevier ScienceAmsterdam, 2010-12)
Data collected by the Pierre Auger Observatory through 31 August 2007 showed evidence for anisotropy in the arrival directions of cosmic rays above the Greisen–Zatsepin–Kuz’min energy threshold, 6 × 1019 eV. The anisotropy ...