Results 11 to 20 of about 1,251,014 (199)

MICRO-PIXE FOR SINGLE CELL ANALYSIS

International Journal of PIXE, 2012
The knowledge of the intracellular distribution of biological relevant metals is important to understand their mechanisms of action in cells, either for physiological, toxicological or pathological processes. However, the direct detection of trace metals in single cells is a challenging task that requires sophisticated analytical developments.
Ortega, R., ORTEGA, Richard
openaire   +3 more sources

A neural network approach for micro-PIXE data

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1999
The application of the artificial neural network for the processing of one-dimensional micro-PIXE data is described. The network architecture, selection of the transfer function as well as the training and verification operations are described in detail.
Rokita, E., Mutsaers, P.H.A., Quaedackers, J.A., Tabor, Z., Voigt, de, M.J.A.   +4 more
openaire   +3 more sources

Micro-PIXE studies on gallium incorporation in mineralized tissue

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2001
The influence of gallium ions on the development of the mineralization process in a cell culture model was investigated. To determine the elemental composition the proton microprobe in combination with proton induced X-ray emission (micro-PIXE) and energy-dispersive X-ray fluorescence (XRF) were used.
Rokita, E., Korbas, M., Mutsaers, P.H.A., Taton, G., de Voigt, M.J.A.   +4 more
openaire   +2 more sources

In-Air Micro-PIXE Mapping with Chemical Contrast. [PDF]

Anal Chem
Currently, chemically specific X-ray fluorescence imaging is restricted to synchrotron facilities and based on the chemical selectivity of X-ray absorption spectra. In this article, we demonstrate the capability of high-energy-resolution micro-PIXE spectroscopy to perform two-dimensional (2D) chemical state mapping of sulfur and phosphorus within ...
Kavčič M, Rajh A.
europepmc   +4 more sources

Micro‐PIXE in ecophysiology

X-Ray Spectrometry, 2005
Abstract Two selected examples of PIXE microanalysis in ecophysiology are presented. Studies of heavy metal distributions in mycorrhizal and non‐mycorrhizal roots of Plantago lanceolata showed different filtration mechanisms of Zn/Pb and Fe/Mn, both enabling plants to cope ...
Przybyłowicz, W. J., Mesjasz-Przybyłowicz, J., Migula, P., Nakonieczny, M., Augustyniak, M., Tarnawska, M., Turnau, Katarzyna, Ryszka, Przemysław, Orłowska, E., Zubek, Szymon, Głowacka, E.   +10 more
openaire   +2 more sources

Estudio de botones de oro de la primera Edad del Hierro del Sudoeste de la Península Ibérica. Identificación de un taller metalúrgico de oro

Trabajos de Prehistoria, 2010
Botones de oro pertenecientes a la primera Edad del Hierro, procedentes de Castro dos Ratinhos, Fortios e Outeiro da Cabeça (Portugal), fueron analizados por EDXRF y Micro-PIXE.
António M. Monge Soares, Pedro Valério, Rui J. C. Silva, Luis Cerqueira Alves, Maria de Fátima Araújo   +4 more
doaj   +1 more source

Archaeometric characterization of Byzantine pottery from Păcuiul lui Soare

Heritage Science, 2019
Archaeometric investigations using OM (optical microscopy) and micro-PIXE (particle induced X-ray emission) were performed on 45 ceramic shards unearthed in archaeological excavations at Păcuiul lui Soare (southeastern Romania) and dated to the eleventh ...
Roxana Bugoi, Cristina Talmaţchi, Constantin Haitǎ, Daniele Ceccato   +3 more
doaj   +1 more source

Physico-elemental analysis of roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico using X-ray micro-computed tomography and external beam particle induced X-ray emission

Food Chemistry: X, 2019
The physico-elemental profiles of commercially attained and roasted organic coffee beans from Ethiopia, Colombia, Honduras, and Mexico were compared using light microscopy, X-ray micro-computed tomography, and external beam particle induced X-ray ...
Karen J. Cloete, Žiga Šmit, Roya Minnis-Ndimba, Primož Vavpetič, Anton du Plessis, Stephan G. le Roux, Primož Pelicon   +6 more
doaj   +1 more source

Deciphering the preservation of fossil insects: a case study from the Crato Member, Early Cretaceous of Brazil [PDF]

PeerJ, 2016
Exceptionally well-preserved three-dimensional insects with fine details and even labile tissues are ubiquitous in the Crato Member Konservat Lagerstätte (northeastern Brazil). Here we investigate the preservational pathways which yielded such specimens.
Gabriel Ladeira Osés, Setembrino Petri, Bruno Becker-Kerber, Guilherme Raffaeli Romero, Marcia de Almeida Rizzutto, Fabio Rodrigues, Douglas Galante, Tiago Fiorini da Silva, Jessica F. Curado, Elidiane Cipriano Rangel, Rafael Parra Ribeiro, Mírian Liza Alves Forancelli Pacheco   +11 more
doaj   +2 more sources

Copper accumulation in the sequestrum of medication-related osteonecrosis of the jaw

Bone Reports, 2015
Bisphosphonates (BPs) have been widely, efficiently, and safely used for the treatment of various bone-related diseases such as osteoporosis. However, concerns about jaw osteonecrosis associated with oral treatment (medication-related osteonecrosis of ...
Tomoko Sugiyama, Motohiro Uo, Teruyasu Mizoguchi, Takahiro Wada, Daisuke Omagari, Kazuo Komiyama, Yoshiyuki Mori   +6 more
doaj   +1 more source