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Noli Fotini Papadopoulos Pavlos Kolias Pavlos Tsiridis Eleftherios Papavasiliou Kyriakos Sayegh Fares 《Journal of Radioanalytical and Nuclear Chemistry》2019,322(2):621-628
Determination of metals and trace elements in patients with total knee or hip arthroplasty with CoCrMo alloy was performed. Blood, urine and cerebrospinal fluid (CSF) samples were analyzed and compared with samples from healthy people. Levels of Co, Cr as well as Na, Ca, Fe, Zn, Se, Rb, Sb and Br were determined by means of neutron activation analysis. The values of Cr and Co of the blood and urine measurements were elevated in patients with replacement, and according to the statistical analysis, significant differences of the elements Zn, Br, Co and Sb were found in the CSF (p?<?0.05).
相似文献2.
J. Orechovska P. Misaelides A. Godelitsas P. Rajec H. Klewe-Nebenius F. Noli E. Pavlidou 《Journal of Radioanalytical and Nuclear Chemistry》1999,241(3):519-527
Pure HEU-type zeolite (heulandite) crystals were allowed to interact with Sr2+ cations in aqueous solution. The powdered solid experimental products obtained from batch-type sorption experiments, using
solutions of Sr2+-concentrations between 10 and 1000 mg/l, were investigated using INAA, RI-XRF and SEM-EDS. The Sr uptake by the mineral which
can adequately be described with a Freundlich-type isotherm, varies from 3.14 to 6.22 mg/g. The distribution coefficients
increase progressively by decreasing the solutions concentration reaching a value of 1800 ml/g. The investigated zeolite interacts
with Sr2+ cations through ion exchange reactions and initial exchangeable Ca2+ cations are replaced into the structural micropores. However, in the best case, only ca. 43% of the theoretical CEC can be
covered because of the limited availability of the extra framework Ca2+ cations that can be removed from the lattice under ambient treatment conditions. The XPS investigation of Sr-loaded single
crystals indicated that adsorption of Sr2+ cations on the outer surface also occurs while surface precipitation phenomena must be excluded. Similar surface analyses
by means of12C-RBS showed that the Sr depth-distribution at near-surface layers is quite homogenous in contrast to a previous relevant
study revealing an intense surface Sr-accumulation on a natural Ca-zeolite of different structural characteristics (scolecite). 相似文献
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Moreau’s decomposition is a powerful nonlinear hilbertian analysis tool that has been used in various areas of optimization and applied mathematics. In this paper, it is extended to reflexive Banach spaces and in the context of generalized proximity measures. This extension unifies and significantly improves upon existing results. 相似文献
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We determine sufficient conditions on positive weights W and V such that there exists continuous, strictly increasing functions Φ and Ψ on [0, ∞) such that Φ(0)=0=Ψ(0) and
whenever f: R→R is a continuous integrable function. We also give an example that shows the optimality of our conditions. 相似文献
6.
G. Buema F. Noli P. Misaelides D. M. Sutiman I. Cretescu M. Harja 《Journal of Radioanalytical and Nuclear Chemistry》2014,299(1):381-386
The U(VI) removal from aqueous solutions (concentration range 125–2,000 mg/L, pH 3) by raw and NaOH-modified power plant ash was investigated by means of a batch method under the following experimental conditions: NaOH concentration 5 M, contact time 1 h, respectively 4 h, temperature 70, 90 °C. The amount of sorbed uranium was determined spectrophotometricaly using the Arsenazo III method. The sorbents were examined prior and after the sorption experiments by scanning electron microscopy/energy dispersive spectroscopy. Typical sorption isotherms were calculated and modeled by the Langmuir and Freundlich equations. The experimental data showed that all materials can remove considerable amounts of uranium from acidic aqueous solutions. The maximum removal efficiency (q max) values obtained, are 126 mg U/g for raw ash and 206 mg U/g for NaOH-modified. Sorption kinetics measurements were performed at 298, 308 and 323 K and thermodynamic parameters were calculated. The kinetic data obey a pseudo-second order equation. 相似文献
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We show that functions f in some weighted Sobolev space are completely determined by time-frequency samples along appropriate slowly increasing sequences and tending to ±∞ as . 相似文献
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Journal of Radioanalytical and Nuclear Chemistry - The determination of the radionuclides of U- and Th-series as well as of 40K and 137Cs in soils and waters in a lignite mining area was performed.... 相似文献
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Kapashi Eleftheria Kapnisti Maria Dafnomili Argyro Noli Fotini 《Journal of Radioanalytical and Nuclear Chemistry》2019,321(1):217-226
Journal of Radioanalytical and Nuclear Chemistry - The use of three biosorbents based on AloeVera wastes for the removal of thorium and barium from aqueous solutions (Cinit:... 相似文献