Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Alex, von Bohlen"'
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 145:99-106
The influence of the organic content, sample preparation process and the morphology of the depositions of two types of Coke beverage, traditional and light Coke, have been investigated by mean of Total-reflection X-ray Fluorescence (TXRF) spectrometr
Autor:
Alex von Bohlen, R. Fernández-Ruiz
Publikováno v:
Talanta. 209
Total-reflection X-ray Fluorescence (TXRF) analysis is an established method used in instrumental analytical chemistry. Benefits and drawbacks of the method are well known. They have been described in the past and presented in many papers in the last
Autor:
C. Keutner, Philipp Espeter, U. Berges, Claus M. Schneider, Carsten Westphal, Alex von Bohlen
Publikováno v:
Analytical Chemistry. 86:9590-9594
Magnetotactic bacteria are of great interdisciplinary interest, since a vast field of applications from magnetic recording media to medical nanorobots is conceivable. A key feature for a further understanding is the detailed knowledge about the magne
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 99:133-137
A survey was carried out with users and manufacturers of Total Reflection X-ray Fluorescence instrumentation in order to demonstrate the worldwide distribution of TXRF equipment and the different fields of applications. In general, TXRF users come fr
Publikováno v:
X-Ray Spectrometry. 43:269-277
Grazing incidence X-ray methods are well-established in the characterization of nanostructures at interfaces and surfaces. The purpose of the experiments reviewed in this work is the comparative characterization of different instrumentation concepts
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. :62-69
X-ray standing waves (XSW) fields generated by total external reflection at different types of interfaces have been analyzed in order to determine the vertical distribution of interference contrast. The intensity contrast between the nodes and antino
Autor:
Alex von Bohlen, Heike Klesper, Klaus Meerholz, Anne Köhnen, Roland Hergenröder, A Herdt, Ralph Wagner, Martin Brücher, Anna Reckmann, Dirk Lützenkirchen-Hecht
Publikováno v:
Macromolecules. 45:3487-3495
X-ray standing waves at grazing incidence are used to trace the position of the reactive chain ends of a surface-initiated (via protons in the underlying PEDOT:PSS layer) polymerization in a bulk polymer film, a procedure recently used to realize ins
Autor:
Vera Geraldes, José Paulo Santos, Isabel Rocha, Alex von Bohlen, M. Becker, Maria Luísa Carvalho, Diana Guimarães
Publikováno v:
X-Ray Spectrometry. 41:80-86
Measurements made in feces and urine of Wistar rats exposed to lead acetate (n = 20) in drinking water since the fetal period were compared with those obtained from a control group (n = 20) in order to assess the age influence on Pb excretion. The me
Autor:
Katy Roodenko, Jörg Rappich, Alex von Bohlen, Karsten Hinrichs, Roland Hergenröder, Norbert Esser, Beatrix Pollakowski, Markus Krämer
Publikováno v:
Thin Solid Films. 518:5509-5514
Ultrathin nanocomposite films of nitrobenzene on silicon were analyzed by Infrared Spectroscopic Ellipsometry (IRSE), X-ray reflectivity (XRR) and X-ray standing waves (XSW) before and after evaporation of gold. Infrared Spectroscopic Ellipsometry me
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 65:504-507
The purpose of this study is to determine the elemental content, namely heavy metals, of samples of vine-leaves, grapes must and wine. In order to assess the influence of the vineyard age on the elemental content throughout the several stages of wine