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There was a confusion around the Q 0- and k 0-values for the reaction 130Ba(n,γ)131Ba. The problem was clarified in this work by re-determination of the k 0-values and critical evaluation of the Q 0-values. The new 131Ba k 0-values were found to be about 16% lower than the recommended ones compiled in 1989 and about 10% lower than those recommended in 2003. The Q 0-value was verified to be 24.3. These new values were successfully applied in k 0-INAA of Ba in various references samples. Possible error sources in Ba determination were investigated which might compensate the negative bias in Ba results from using the inaccurate k 0-values, consequently masking the problem of these old k 0-factors so far. In this context, a few cases were studied and presented. [ABSTRACT FROM AUTHOR]

Two samples of Napoleon's hair were received for determination of arsenic, mercury and other trace elements by INAA. Before sample irradiation, the hairs were washed following the IAEA washing procedure. Two standard reference materials of GBW09101 (human hair) and NIST/SRM1572 (citrus leaves) were analyzed along with Napoleon's hair for quality control. Standardization was conducted by applying the k0-method implemented in the program MULTINAA. The contents of arsenic and mercury as well as three additional elements chromium, antimony and zinc in Napoleon's hair are reported. Compared to the present normal levels, all of the determined elements in Napoleon's hair, except the mercury, are found to be irregular. [ABSTRACT FROM AUTHOR]

This work is about k0-INAA using unstable neutron flux for sample irradiation. Due to slow transport, each irradiation in the channel DBVK consists of three phases: stable irradiation at the final position, and two additional irradiations during travelling by exposure to an increasing neutron flux in the delivery course and to a decreasing neutron flux in the fetch course. In this work, the neutron flux distribution along this channel was calibrated and the neutron flux variation with irradiation time was calculated, making it possible to evaluate activity growth during a complete irradiation period. The feasibility of the k0-method was checked by analyses of four SRM-materials and three multi-element standards at three DBVK-positions. An accuracy of better than ±10% was found for nearly all determined elements in each determination. [ABSTRACT FROM AUTHOR]

It has been demonstrated that the interferences on64Cu 511 keV line from nuclides having high energy γ-rays can be effectively reduced physically. An INAA procedure is proposed and used to determine trace amounts of Cu in biological and environmental samples, However, due to the fact that the interferences on64Cu 511 keV line are not completely eliminated, the question arises on what is the limit of the non-destructive method for Cu determination. An equation is derived to establish the relation between the minimum detectable Cu concentration and the INAA experimental conditions. Based on this equation, an optimised INAA procedure is worked out and applied to blood analysis. The results show that the optimised INAA procedure is able to determine Cu quantitatively for samples with Na-to-Cu content ratio less than 600–1000. [ABSTRACT FROM AUTHOR]

This work demonstrates that the64Cu 511 keV line can be used in INAA to determine trace amounts of Cu in biological and environmental materials. The method to reduce the serious interference in γ-ray spectroscopy from nuclides having high energy γ-rays is discussed. A simple INAA procedure is proposed and examined for 7 different SRM materials. An accuracy and precision better than 3% are achieved for tested samples with Na-to-Cu content ratio less than 1000. The minimum detectable Cu concentrations of less than several ppm are calculated for all the analysed samples. To retain the multi-element capability, the k0-and the modified monostandard methods are applied by using the64Cu 511 keV line as the comparator. With the aid of the program MULTINAA, maximum 32 elements are simultaneously determined with an accuracy better than 5% for most elements. [ABSTRACT FROM AUTHOR]

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Background: The number of reverse shoulder arthroplasty (RSA) procedures performed worldwide has increased over the last 10 years, with a corresponding increase in revision shoulder arthroplasty (SRSA). SRSA is often used for post-traumatic revision surgery in cases of infections and failure of anatomical prostheses. Data on outcomes with specific detail for each indication for the prosthetic solution as a secondary treatment are scarce, and inhomogeneous., Methods: The questionnaires were sent by mail to 65 patients who underwent SRSA between January 2014 and November 2023. Based on the indications for SRSA, patients were categorized into post-traumatic shoulder arthritis, humeral head necrosis, failed proximal humerus fractures, failed proximal humerus osteosynthesis, prostheses loosening, and infection groups., Results: Of the 65 patients included in the study, 39 completed the questionnaire, and the mean follow-up duration was 44 months (range, 12-104 months). The Constant score ranged from 28 points for all 6 groups (range, 38-66). The post-infection group showed the highest results, with 66 points (range, 24-90) on the Constant score; followed by 26 points (range, 49-6) points on the DASH score; and 0.90 (range, 0.763-1) on the EQ-5D-5L. Failed proximal humerus fractures presented the lowest scores: 38 points (range, 22-63) on the Constant score; 51 points (range, 73-30) points on the DASH score; and 0.61 (range, -0.496-1) on the EQ-5D-5L., Conclusions: No previous study has investigated the influence of indications on the clinical outcome of SRSA so circumstantial. In this study, the highest outcome scores were observed in the post-infection group, whereas the lowest scores were observed in the failed humerus fracture group. Our results underline the influence of the indication on the clinical outcome of SRSA., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2025 Bergert et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)