Results 71 to 80 of about 1,251,014 (199)

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

Lapis lazuli provenance study by means of micro-PIXE

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2011
Abstract In this paper we report about the micro-PIXE characterisation of lapis lazuli, for a provenance study of this semi-precious stone, used for glyptic as early as 7000 years ago. The final aim is to find markers permitting to identify the origin of the raw material coming from three quarries in regions of historical importance: Afghanistan ...
A. Re, A. Lo Giudice, D. Angelici, CALUSI, SILVIA, GIUNTINI, LORENZO, MASSI, MIRKO, PRATESI, GIOVANNI   +6 more
openaire   +3 more sources

Metal - biomass interactions: a comparison of visualisation techniques available in South Africa

South African Journal of Science, 2009
The interaction of metals and biological materials is of interest for reasons such as metal recovery, toxicity and production of high-value products such as gold and platinum nanoparticles.
B. Moore, C. Mack, J. Duncan, J. Burgess
doaj  

Quantitative Micro-PIXE Analysis Using the GEOPIXE Software

, 2018
Particle Induced X-ray emission (PIXE) technique was employed for analysis of major and trace elements in two biomedical materials and one petrochemical material.
Udeogu, Henry E.
core  

Combined micro-PIXE and NIR Raman spectroscopic plaque characterisation in a human atherosclerotic aorta sample

, 2001
Raman spectroscopy can be applied to characterise the chemical composition of an atherosclerotic plaque in vivo. In the near future this technique may become available for use in (coronary) arteries of living patients. For this moment, Raman spectroscopy
Puppels, G.J., Brands, P.J.M., de Voigt, M.J.A., Center, Leiden University, Quaedackers, J.A., Mutsaers, P.H.A., Van de Poll, S.W.E.   +6 more
core   +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

Application of Micro-PIXE in Atmospheric Environmental Science Research:Elemental Maps in Root of Siebold's Beech Seeding

, 2003
Micro-beam scanning PIXE (micro-PIXE) and scanning transmisssion ion microscopy (STIM)were applied to measurement of one-year old seeding root from a Siebold's beech(Fagus crenata Blume) tree.
431762, 431761, Watanabe, Yoshito, 431764, 431763, 今関 等, 齊藤 勝美, 431766, 431765, 431767, Yukawa, Masae, 渡辺 嘉人, Imaseki, Hitoshi, Saitoh, Katsumi, 湯川 雅枝, 431760   +15 more
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Spectroscopic techniques in the investigation of extraordinary medieval Polish coins: Revealing the presence of hidden cores

Nukleonika
Cross denars, frequently found in Polish hoards, were traditionally thought to be Ag coins with some Cu content. This study investigates the possibility of a hidden Cu core beneath the Ag or Ag–Cu surface of these coins. It raises questions about whether
Trela Krystian, Gójska Aneta Maria, Miśta-Jakubowska Ewelina A., Kelemen Mitja, Šmit Žiga, Kędzierski Adam, Garbacz-Klempka Aldona   +6 more
doaj   +1 more source

Characterization of ambient aerosols in Mexico City during the MCMA-2003 campaign with Aerosol Mass Spectrometry: results from the CENICA Supersite [PDF]

Atmospheric Chemistry and Physics, 2006
An Aerodyne Aerosol Mass Spectrometer (AMS) was deployed at the CENICA Supersite, during the Mexico City Metropolitan Area field study (MCMA-2003) from 31 March-4 May 2003 to investigate particle concentrations, sources, and processes.
D. Salcedo, D. Salcedo, T. B. Onasch, K. Dzepina, K. Dzepina, M. R. Canagaratna, Q. Zhang, Q. Zhang, J. A. Huffman, J. A. Huffman, P. F. DeCarlo, P. F. DeCarlo, J. T. Jayne, P. Mortimer, P. Mortimer, D. R. Worsnop, C. E. Kolb, K. S. Johnson, B. Zuberi, B. Zuberi, L. C. Marr, L. C. Marr, R. Volkamer, R. Volkamer, L. T. Molina, L. T. Molina, M. J. Molina, M. J. Molina, B. Cardenas, R. M. Bernabé, C. Márquez, J. S. Gaffney, N. A. Marley, A. Laskin, V. Shutthanandan, Y. Xie, W. Brune, R. Lesher, T. Shirley, J. L. Jimenez, J. L. Jimenez   +40 more
doaj  

Study of the aerosols in cities and caves by PIXE and micro-PIXE methods

, 2000
Városi és barlangi aeroszolok vizsgálata PIXE és mikro-PIXE ...
Kertész, Zsófia
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