Search Results - "Simionovici, A"
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Speciation of sulfur in the insoluble organic matter from carbonaceous chondrites by XANES spectroscopy
Published in Earth and planetary science letters (01-12-2010)“…Sulfur speciation in a comprehensive set of insoluble organic matter (IOM) samples extracted from 3 CI (Orgueil, Alais, Ivuna), 5 CM (QUE97990, Murchison,…”
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2
Nanoscale trace metal imprinting of biocalcification of planktic foraminifers by Toba’s super-eruption
Published in Scientific reports (03-07-2020)“…Bioactive metal releases in ocean surface water, such as those by ash falls during volcanic super-eruptions, might have a potentially toxic impact on…”
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3
Origin of EL3 chondrites: Evidence for variable C/O ratios during their course of formation—A state of the art scrutiny
Published in Meteoritics & planetary science (01-05-2017)“…Mineral inventories of enstatite chondrites; (EH and EL) are strictly dictated by combined parameters mainly very low dual oxygen (fO2) and sulfur (fS2)…”
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4
Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: the 1s Lamb shift in hydrogen-like gold
Published in New journal of physics (18-07-2018)“…Accurate spectroscopy of highly-charged high-Z ions in a storage ring is demonstrated to be feasible by the use of specially adapted crystal optics. The method…”
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A library for X-ray–matter interaction cross sections for X-ray fluorescence applications
Published in Spectrochimica acta. Part B: Atomic spectroscopy (08-10-2004)“…Quantitative estimate of elemental composition by spectroscopic and imaging techniques using X-ray fluorescence requires the availability of accurate data of…”
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6
Nanofocusing parabolic refractive x-ray lenses
Published in Applied physics letters (03-03-2003)“…Parabolic refractive x-ray lenses with short focal distance can generate intensive hard x-ray microbeams with lateral extensions in the 100 nm range even at a…”
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7
Cobalt distribution in keratinocyte cells indicates nuclear and perinuclear accumulation and interaction with magnesium and zinc homeostasis
Published in Toxicology letters (10-07-2009)“…Cobalt is known to be toxic at high concentration, to induce contact dermatosis, and occupational radiation skin damage because of its use in nuclear industry…”
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The rheological behaviour of fracture-filling cherts: example of Barite Valley dikes, Barberton Greenstone Belt, South Africa
Published in Solid earth (Göttingen) (20-02-2015)“…In the Barberton Greenstone Belt, South Africa, a 100–250 m thick complex of carbonaceous chert dikes marks the transition from the Mendon Formation to the…”
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9
Perspectives on heterococcolith geochemical proxies based on high-resolution X-ray fluorescence mapping
Published in Geobiology (01-07-2016)“…Heterococcoliths are micron‐scale calcite platelets produced by coccolithophores. They have been the most abundant and continuous fossil record over the last…”
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High‐resolution wavelength‐dispersive spectroscopy of K‐shell transitions in hydrogen‐like gold
Published in X-ray spectrometry (01-01-2020)“…We present a measurement of K‐shell transitions in H‐like gold (Au78+) using specially developed transmission type crystal spectrometers combined with Ge(i)…”
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Synchrotron hard x-ray microprobe: Fluorescence imaging of single cells
Published in Applied physics letters (28-05-2001)“…Imaging of trace elements in single cells was achieved by synchrotron-induced x-ray fluorescence (SXRF) in the hard x-ray range. Monochromatic and “pink”…”
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12
Microimaging and tomography with chemical speciation
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (2003)“…Materials science deals with the study of the morphology of samples, their chemical composition and the relation between both. One general problem is the…”
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13
Quantitative comparison of X-ray fluorescence microtomography setups: Standard and confocal collimator apparatus
Published in Spectrochimica acta. Part B: Atomic spectroscopy (01-07-2007)“…Recently, there has been a renewed interest for fluorescence spectroscopy, as provided by modern setups which allow 2D and 3D imaging of elemental…”
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14
Voxel-based Monte Carlo simulation of X-ray imaging and spectroscopy experiments
Published in Spectrochimica acta. Part B: Atomic spectroscopy (08-10-2004)“…A Monte Carlo code for the simulation of X-ray imaging and spectroscopy experiments in heterogeneous samples is presented. The energy spectrum, polarization…”
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15
Micro-X-ray absorption near edge structure as a suitable probe to monitor live organisms
Published in Spectrochimica acta. Part B: Atomic spectroscopy (01-04-2008)“…X-ray spectroscopies are very powerful tools to determine the chemistry of complex dilute solutes in abiotic and biotic systems. We have assayed their…”
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16
Standardless quantification of single fluid inclusions using synchrotron radiation induced X-ray fluorescence
Published in Chemical geology (05-04-2006)“…Fluid inclusions are studied using synchrotron radiation induced μ-X-ray fluorescence (μ-SR-XRF). We analyse inclusions from the Brusson gold deposit, Italy…”
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17
Ten years of x-ray holography
Published in X-ray spectrometry (01-01-2007)“…With the appearance of nano‐science the role of local methods has become more and more important. Hard x‐ray holography based on the inside reference point…”
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Use of microscopic XRF for non-destructive analysis in art and archaeometry
Published in X-ray spectrometry (01-01-2000)“…The various application possibilities of microscopic x‐ray fluorescence and associated methods for the characterization and provenance analysis of objects and…”
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Implementation of X-ray fluorescence microscopy for investigation of elemental abnormalities in amyotrophic lateral sclerosis
Published in Neurochemical research (01-03-2006)“…The abnormalities of metallochemical reactions may contribute to the pathogenesis of Amyotrophic Lateral Sclerosis (ALS). In the present work, an investigation…”
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ID22: a multitechnique hard X-ray microprobe beamline at the European Synchrotron Radiation Facility
Published in Journal of synchrotron radiation (01-03-2005)“…The ID22 beamline is dedicated to hard X-ray microanalysis allowing the combination of fluorescence, spectroscopy, diffraction and tomography techniques in a…”
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