Results 31 to 40 of about 996 (203)

The use of the maximum entropy method for the improvement of the spatial resolution of the micro-PIXE maps

, 1997
The deconvolution procedure based on the maximum-entropy method is applied to improve both resolution and noise characteristics of micro-PIXE maps. The procedure is simple to execute, fast, easily automated and assumes no a priori information.
de Voigt, M.J.A., Mutsaers, P.H.A., Maj, B., Rokita, E.   +3 more
core   +1 more source

RBS, PIXE, Ion-Microbeam and SR-FTIR Analyses of Pottery Fragments from Azerbaijan

Heritage, 2019
The present work is aimed at the investigation of the ceramic bulk and pigmented glazed surfaces of ancient potteries dating back to XIX century A.D.
Lorenzo Torrisi, Valentina Venuti, Vincenza Crupi, Letteria Silipigni, Mariapompea Cutroneo, Giuseppe Paladini, Alfio Torrisi, Vladimír Havránek, Anna Macková, Mauro Francesco La Russa, Giovanni Birarda, Lisa Vaccari, Andrea Macchia, Fariz Khalilli, Michela Ricca, Domenico Majolino   +15 more
doaj   +1 more source

Trace Element Analysis in Human Neuroblastoma Cell Spheroids Supplemented With ZnCl2 by Micro‐XRF

X-Ray Spectrometry, Volume 55, Issue 4, Page 545-552, July/August 2026.
ABSTRACT Neuroblastoma, the most common extracranial solid tumor of childhood, is responsible for ~10% of pediatric cancer deaths and has high potential for metastasis. Metals are extremely important in biological processes, and changes in their levels have been correlated with the development of cancerous growth.
J. E. P. Rosa, R. G. Leitão, G. C. Ferreira, C. Palmero, E. G. Oliveira‐Barros, M. A. Oliveira, C. G. L. Canellas, L. E. Nasciutti, D. F. Olivera, R. T. Lopes, M. J. Anjos   +10 more
wiley   +1 more source

MICRO-PIXE ANALYSIS OF PLATINUM-GROUP MINERALS FROM PLACER DEPOSITS

, 1992
Micro-PIXE and EPMA analyses of platinum-group minerals from placer deposits are being used in an attempt to determine whether the PGM are derived from ultramafic rocks by weathering, or formed directly in the placer by chemical accretion.
Criddle, Alan J., Tamana, Hardeep, Vaughan, David, SPRATT, J, Spratt, John, TAMANA, H, VAUGHAN, D, GRIME, G, Grime, Geoff, CRIDDLE, AJ, Reeson, Karen J., REESON, KJ   +11 more
core   +1 more source

Mangifera indica as Bioindicator of Mercury Atmospheric Contamination in an ASGM Area in North Gorontalo Regency, Indonesia

Geosciences, 2018
We report the atmospheric Hg contamination in an artisanal and small-scale gold mining (ASGM) area in North Gorontalo, Indonesia. It is well known that atmospheric Hg contaminates the air, water, soil, and living organisms, including trees. In this study,
Hendra Prasetia, Masayuki Sakakibara, Koji Omori, Jamie S. Laird, Koichiro Sera, Idham A. Kurniawan   +5 more
doaj   +1 more source

Methods to estimate marine functional connectivity: A primer

Ecological Applications, Volume 36, Issue 4, June 2026.
Abstract Organism movement is a key process in the transfer of individuals, genes, functional traits, matter, and energy among habitat patches, at sea and across the land–sea interface. The resulting fluxes, collectively termed marine functional connectivity (MFC), underpin planetary health and an array of ecosystem services.
Anna M. Sturrock, Susanne E. Tanner, Sophie Arnaud‐Haond, Jacopo Aguzzi, Francisco R. Barboza, Maria Beger, Andreu Blanco, Deirdre Brophy, Marta Carreton, Amber‐Robyn Childs, Federica Costantini, Oscar E. Gaggiotti, Bronwyn M. Gillanders, José M. González‐Irusta, Katell Guizien, Tamar Guy‐Haim, Stefanie Haase, Ewan Hunter, Jonne Kotta, Geneviève Lacroix, Rafet Ç. Öztürk, Angel Pérez‐Ruzafa, Patrick Reis‐Santos, Cynthia Riginos, Gil Rilov, Buki Rinkevich, Guiomar Rotllant, David H. Secor, Szymon Smoliński, Clive N. Trueman, Benjamin D. Walther, Audrey M. Darnaude   +31 more
wiley   +1 more source

SR XRF and micro PIXE studies on ancient metallurgy of thirteen Dacian gold bracelets

, 2012
A thorough microscopic investigation by SR XRF and micro-PIXE brings insight into the probable techniques used in the manufacture of thirteen Dacian gold bracelets, one of the most spectacular archaeological finds ever on the territory of ...
Constantinescu, B., Reinholz, U., Reinholz, Uwe, Radtke, M., Pacheco, C., Vasilescu, A., Oberländer Tarnoveanu, E., Oberländer-Târnoveanu, E., Radtke, Martin, Pichon, L.   +9 more
core   +1 more source

3D‐Printed Porous Hydroxyapatite Formed via Enzymatic Mineralization

Advanced Functional Materials, Volume 36, Issue 38, 11 May 2026.
Bone combines lightness, strength, and the ability to heal, inspiring new materials design. This work introduces a room‐temperature, enzyme‐mediated 3D printing method to create porous hydroxyapatite scaffolds. The process avoids energy‐intensive sintering, preserves bioactivity, and allows control over porosity and mineralization.
Francesca Bono, Anna Puiggalí‐Jou, Greta Cocchi, Mariangela Miccoli, Katharina Maniura‐Weber, Marcy Zenobi‐Wong, Esther Amstad   +6 more
wiley   +1 more source

Formation process of pyrite polyframboid based on the heavy-metal analysis by micro-PIXE [PDF]

, 2013
Pyrite framboid in sedimentary rocks could be concerned with arsenic contamination in groundwater of acidic environment and has been studied for the formation process of its unique morphology.
Suzuki, T, Belton, D, Sakakibara, M, Sugawara, H   +3 more
core   +1 more source

Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS

The Canadian Journal of Chemical Engineering, Volume 104, Issue 5, Page 2206-2224, May 2026.
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa, Jildimara de Jesus Santana, Viviane de Oliveira Campos, Felipe Fernandes Barbosa, Gregory S. Patience   +4 more
wiley   +1 more source