scholarly journals Accuracy associated with the activity determination by in situ gamma spectrometry of naturally occurring radionuclides in soils

2016 ◽  
Vol 162-163 ◽  
pp. 219-224 ◽  
Author(s):  
A. Baeza ◽  
J.A. Corbacho ◽  
J. Guillén
Keyword(s):  
Gamma Spectrometry ◽  
Activity Determination ◽  
Naturally Occurring ◽  
Naturally Occurring Radionuclides

scholarly journals In-situ ground gamma spectrometry — an effective tool for geological mapping (the Male Karpaty Mts., Slovakia)

2016 ◽  
Vol 67 (3) ◽  
pp. 291-301
Author(s):  
Andrej Mojzeš ◽  
Barbara Porubčanová
Keyword(s):  
Gamma Spectrometry ◽  
Natural Radionuclides ◽  
Mineral Resources ◽  
Geological Structure ◽  
Geological Mapping ◽  
Near Surface ◽  
Naturally Occurring Radionuclides ◽  
Geological Map

Abstract This contribution presents the results of profile in-situ gamma spectrometry measurements that sought to determine the content of natural radionuclides 40K, 238U and 232Th in a near surface horizon of rocks, their weathering cover and soils in the area of the Malé Karpaty Mts. It is widely established that the exploration of radioactivity of bedrocks and cover rocks can be a very effective and useful tool for both geological mapping, for identifying deposits of mineral resources, and even addressing the issues of structural and tectonic geology. This assertion is equally confirmed by the ground gamma spectrometry measurements carried out as part of this case study on larger scales, seeking more detailed geological structure solutions. The results obtained provide a welcome addition to an already existing database, which monitors the content of naturally occurring radionuclides individually for every rock lithotype of the Western Carpathians, by elaborating on the data collected by previous research and by updating this database for any future needs. The presented results confirmed the low to medium radioactivity levels of rocks and soils in the studied area. The highest values were detected in granitoids and metamorfic phyllitic rocks of the Malé Karpaty Mts. core; the lowest values were detected in carbonates, arenaceous sediments and, above all, amphibolite bodies. In this way, the presented results of the interpreted profile (P5) confirm the model of local geological structure as represented on the most up-to-date edition of the geological map of the Male Karpaty Mts. (Polak et al. 2011).

scholarly journals In situ measurements of natural radioactivity in selected igneous rocks of the Opava Mountain region

2014 ◽  
Vol 3 (1) ◽  
pp. 5-12
Author(s):  
Agnieszka Dżaluk ◽  
Dariusz Malczewski ◽  
Jerzy Żaba ◽  
Maria Dziurowicz
Keyword(s):  
Gamma Ray ◽  
Igneous Rocks ◽  
Gamma Ray Spectrometry ◽  
Weathered Granite ◽  
Naturally Occurring ◽  
Decay Series ◽  
Naturally Occurring Radionuclides ◽  
238U Decay Series ◽  
Migmatitic Gneiss

Abstract In situ gamma-ray measurements of four igneous rocks were taken in the Opava Mountains (Eastern Sudetes, Poland). The activity of naturally occurring radionuclides was measured using a portable GX3020 gamma-ray spectrometry workstation. The activity concentrations of 40K varied from 914 ± 17 Bqkg-1 (gneiss, Kamienna Góra) to 2019 ± 37 Bqkg-1 (weathered granite, Sławniowice), while those of 232Th from 7.5 ± 0.6 Bqkg-1 (weathered granite, Sławniowice) to 68 ± 0.9 Bqkg-1 (migmatitic gneiss, Nadziejów). The activities associated with 238U decay series ranged from 10 ± 0.4 Bqkg-1 (weathered granite, Sławniowice) to 62 ± 1.6 Bqkg-1 (gneiss, Kamienna Góra). The results will be used in compiling Radiological Atlas of the Sudetes

Optimization of the selection of analysis methods for the determination of naturally occurring radionuclides

Kerntechnik ◽  
2008 ◽  
Vol 73 (3) ◽  
pp. 118-121
Author(s):  
T. Heinrich ◽  
L. Funke ◽  
M. Köhler ◽  
U.-K. Schkade ◽  
F. Ullrich ◽  
...  
Keyword(s):  
Naturally Occurring ◽  
Analysis Methods ◽  
Naturally Occurring Radionuclides ◽  
Selection Of

How Artefacts Do Leadership: A Ventriloquial Analysis

2021 ◽  
pp. 089331892199807
Author(s):  
Jonathan Clifton ◽  
Fernando Fachin ◽  
François Cooren
Keyword(s):  
Organizational Communication ◽  
Recent Work ◽  
Distributed Leadership ◽  
Network Theory ◽  
Actor Network Theory ◽  
Fine Grained ◽  
Naturally Occurring ◽  
Human Actors

To date there has been little work that uses fine-grained interactional analyses of the in situ doing of leadership to make visible the role of non-human as well as human actants in this process. Using transcripts of naturally-occurring interaction as data, this study seeks to show how leadership is co-achieved by artefacts as an in-situ accomplishment. To do this we situate this study within recent work on distributed leadership and argue that it is not only distributed across human actors, but also across networks that include both human and non-human actors. Taking a discursive approach to leadership, we draw on Actor Network Theory and adopt a ventriloquial approach to sociomateriality as inspired by the Montreal School of organizational communication. Findings indicate that artefacts “do” leadership when a hybrid presence is made relevant to the interaction and when this presence provides authoritative grounds for influencing others to achieve the group’s goals.

Distribution of Naturally Occurring Radionuclides in Taiwanese Rocks

1992 ◽  
Vol 45 (1-4) ◽  
pp. 281-283 ◽  
Author(s):  
T.-C. Chu ◽  
P.-S. Weng ◽  
Y.-M. Lin
Keyword(s):  
Naturally Occurring ◽  
Naturally Occurring Radionuclides

scholarly journals Guidance for in situ gamma spectrometry intercomparison based on the information obtained through five intercomparisons during the Fukushima mapping project

2019 ◽  
Vol 210 ◽  
pp. 105938 ◽  
Author(s):  
Satoshi Mikami ◽  
Daisuke Ishikawa ◽  
Hideo Matsuda ◽  
Yoshifumi Hoshide ◽  
Naotoshi Okuda ◽  
...  
Keyword(s):  
Gamma Spectrometry
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