Results 21 to 30 of about 7,088,795 (306)

Palaeomagnetic and synchrotron analysis of >1.95 Ma fossil-bearing palaeokarst at Haasgat, South Africa

South African Journal of Science, 2014
Palaeomagnetic analysis indicates that Haasgat, a fossil-bearing palaeocave in the Gauteng Province of South Africa, is dominated by reversed magnetic polarity in its oldest, deepest layers and normal polarity in the younger layers.
Andy I.R. Herries, Peter Kappen, Anthony D.T. Kegley, David Patterson, Daryl L. Howard, Martin D. de Jonge, Stephany Potze, Justin W. Adams   +7 more
doaj   +1 more source

Halogenated Thermally Activated Delayed Fluorescence Materials for Efficient Scintillation

Research, 2023
Organic scintillators, materials with the ability to exhibit luminescence when exposed to X-rays, have aroused increasing interest in recent years. However, the enhancement of radioluminescence and improving X-ray absorption of organic scintillators lie ...
Xiao Wang, Guowei Niu, Zixing Zhou, Zhicheng Song, Ke Qin, Xiaokang Yao, Zhijian Yang, Xiaoze Wang, He Wang, Zhuang Liu, Chengzhu Yin, Huili Ma, Kang Shen, Huifang Shi, Jun Yin, Qiushui Chen, Zhongfu An, Wei Huang   +17 more
doaj   +1 more source

Quantitative analysis by X ray fluorescence

Materiales de Construccion, 1966
Not ...
José Luis Sagrera
doaj   +1 more source

Investigation of alloying effects on XRF parameters of 3d transition metals in Permendur49, Kovar and Ti50Co50 alloys

Journal of Radiation Research and Applied Sciences, 2018
The alloying effects on X-ray fluorescence (XRF) parameters such as K shell fluorescence cross-sections (σKα, σKβ and σK), K shell average fluorescence yields (ωK) and K to L shell vacancy transfer probabilities (ηKL) of V, Ti, Fe, Co and Ni 3d ...
Bünyamin Alım, Mine Uğurlu, İbrahim Han, Lütfü Demir   +3 more
doaj   +1 more source

Determination of chlorine in concretes by X ray fluorescence methods

Materiales de Construccion, 1967
Not ...
J. L. Sagrera, B. Bacle
doaj   +1 more source

X-ray Fluorescence Computed Tomography (XFCT) Imaging with a Superfine Pencil Beam X-ray Source

Photonics, 2021
X-ray fluorescence computed tomography (XFCT) is a molecular imaging technique that can be used to sense different elements or nanoparticle (NP) agents inside deep samples or tissues. However, XFCT has not been a popular molecular imaging tool because it
Ignacio O. Romero, Yile Fang, Michael Lun, Changqing Li   +3 more
doaj   +1 more source

Fluorescence imaging ofDictyostelium discoideumwith a hard X-ray nanoprobe

, 2022
The preparation and a novel sample environment for X-ray based imaging of freeze-dried Dictyostelium discoideum cells are presented. As a first application a fluorescence imaging experiment with a nanofocused hard X-ray beam has been performed.
Salditt, Tim, C Beta, ; 2Max-Planck-Insitute for Dynamics and Self-Organization, Am Faßberg 11, 37077 Göttingen, Germany, T Salditt, ; 1Institute for X-ray Physics, Georg-August-University, Friedrich-Hund-Pl. 1, 37077 Göttingen, Germany, Tucoulou, R., Giewekemeyer, K., Hantke, M., K Giewekemeyer, ; 1Institute for X-ray Physics, Georg-August-University, Friedrich-Hund-Pl. 1, 37077 Göttingen, Germany, R Tucoulou, ; 4European Synchrotron Radiation Facility (ESRF), BP 220, 38043 Grenoble, France, M Hantke, ; 1Institute for X-ray Physics, Georg-August-University, Friedrich-Hund-Pl. 1, 37077 Göttingen, Germany, Beta, C.   +9 more
core   +1 more source

Influence of compression on soil characterization by X ray fluorescence

Semina: Ciências Exatas e Tecnológicas, 2018
The study of soil mineralogy has been highlighted in recent years, as well as the search for alternative analytical techniques for soil analysis. The classical methods for determination of total oxides in soil expose the analyst to chemical hazards and ...
Yasmin Vieira, Mara Regina Linck, Delton Luiz Gobbi, Lucas Brandalise Menezes, Fernanda Da Silva Vilasbôas   +4 more
doaj   +1 more source

Classification of Hungarian medieval silver coins using x-ray fluorescent spectroscopy and multivariate data analysis [PDF]

, 2013
A set of silver coins from the collection of Déri Museum Debrecen (Hungary) was examined by X-ray fluorescent elemental analysis with the aim to assign the coins to different groups with the best possible precision based on the acquired chemical ...
Anita Rácz, Károly Héberger, János Elek, Rajkó, Róbert, Rácz, Anita, Róbert Rajkó, Héberger, Károly, Elek, János   +7 more
core   +1 more source

Alloying effect on K shell X-ray fluorescence cross-sections and yields in Ti-Ni based shape memory alloys

Journal of Radiation Research and Applied Sciences, 2018
K shell X-ray fluorescence cross-sections (σKα, σKβ and σK), and K shell fluorescence yields (ωK) of Ti, Ni both in pure metals and in different alloy compositions (TixNi1-x; x = 0.3, 0.4, 0.5, 0.6, 0.7) were measured by using energy dispersive X-ray ...
Bünyamin Alım, İbrahim Han, Lütfü Demir   +2 more
doaj   +1 more source