Treffer 1 - 10 von insgesamt 18
Frontiers in Water
Innovative Methods for Non-invasive Monitoring of Hydrological Processes From Field to Catchment Scale
2021
| Erscheinungsland | de |
|---|---|
| Dokumenttyp | Artikel ; Online |
| Datenquelle | BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl) |
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Radiation protection dosimetry
2016 Band 172, Heft 4, Seite(n) 488–495
Abstract: The realisation of the geographical distribution of the indoor radon concentrations in dwellings represents a valuable tool necessary for assessing the public exposure. In this work are reported the results of the indoor radon obtained in the first stage ...
| Abstract | The realisation of the geographical distribution of the indoor radon concentrations in dwellings represents a valuable tool necessary for assessing the public exposure. In this work are reported the results of the indoor radon obtained in the first stage of the survey involving 247 measurements. From the preliminary information on ∼10 % of the territory, covering the biggest cities in Albania results on indoor radon concentrations ranging from 14 to 1238 Bq m |
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| Mesh-Begriff(e) | Air Pollutants, Radioactive/analysis ; Air Pollution, Indoor/analysis ; Albania ; Environmental Exposure/analysis ; Housing ; Humans ; Radiation Monitoring ; Radon/analysis |
| Chemische Substanzen | Air Pollutants, Radioactive ; Radon (Q74S4N8N1G) |
| Sprache | Englisch |
| Erscheinungsdatum | 2016-12 |
| Erscheinungsland | England |
| Dokumenttyp | Journal Article |
| ZDB-ID | 225912-6 |
| ISSN | 1742-3406 ; 0144-8420 |
| ISSN (online) | 1742-3406 |
| ISSN | 0144-8420 |
| DOI | 10.1093/rpd/ncv494 |
| Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
| Zs.A 2009: Hefte anzeigen | Standort: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (1.OG) ab Jg. 2022: Lesesaal (EG) |
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2015 Band 139, Seite(n) 30–39
Abstract: The Naturally Occurring Radioactive Materials (NORMs) that are potentially generated from oil and gas extractions in Albania have been disposed of without regulations for many decades, and therefore, an extensive survey in one of the most productive ... ...
| Abstract | The Naturally Occurring Radioactive Materials (NORMs) that are potentially generated from oil and gas extractions in Albania have been disposed of without regulations for many decades, and therefore, an extensive survey in one of the most productive regions (Vlora-Elbasan) was performed. A total of 52 gamma ray spectrometry measurements of soil, oil-sand, sludge, produced water and crude oil samples were performed. We discovered that relatively low activity concentrations of (226)Ra, (228)Ra, (228)Th and (40)K, with concentrations of 23±2Bq/kg, 23±2Bq/kg, 24±3Bq/kg and 549±12Bq/kg, respectively, came from the oil-sands produced by the hydrocarbon extraction of the molasses formations. The mineralogical characterizations and the (228)Ra/(40)K and (226)Ra/(40)K ratios of these Neogene deposits confirmed the predictions of the geological and geodynamic models of a dismantling of the Mesozoic source rocks. The average activity concentrations (±standard deviations) of the radium isotopes ((226)Ra and (228)Ra) and of the (228)Th and (40)K radionuclides in soil samples were 20±5Bq/kg, 25±10Bq/kg, 25±9Bq/kg and 326±83Bq/kg, respectively. Based on the measurements in this study, the future radiological assessments of other fields in the region should be strategically planned to focus on the oil-sands from the molasses sediments. Disequilibrium in the (228)Ra decay segment was not observed in the soil, sludge or oil-sand samples within the standard uncertainties. After a detailed radiological characterization of the four primary oil fields, we concluded that the outdoor absorbed dose rate never exceeded the worldwide population weighted average absorbed dose rate in outdoor air from terrestrial gamma radiation. |
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| Mesh-Begriff(e) | Albania ; Industrial Waste/analysis ; Oil and Gas Fields ; Petroleum/analysis ; Radiation Monitoring ; Radioactive Pollutants/analysis ; Radioisotopes/analysis ; Soil/chemistry ; Spectrometry, Gamma |
| Chemische Substanzen | Industrial Waste ; Petroleum ; Radioactive Pollutants ; Radioisotopes ; Soil |
| Sprache | Englisch |
| Erscheinungsdatum | 2015-11 |
| Erscheinungsland | England |
| Dokumenttyp | Journal Article ; Research Support, Non-U.S. Gov't |
| ZDB-ID | 120089-6 |
| ISSN | 1879-1298 ; 0045-6535 ; 0366-7111 |
| ISSN (online) | 1879-1298 |
| ISSN | 0045-6535 ; 0366-7111 |
| DOI | 10.1016/j.chemosphere.2015.05.018 |
| Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
| Zs.A 2540: Hefte anzeigen | Standort: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (2.OG) ab Jg. 2022: Lesesaal (EG) |
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2021 Band 21, Heft 2
Abstract: In the building material and stones market, lots of restrictions are coming in different world zones. In Europe, a recent regulatory set up the maximum level of radiological emissions for materials intended for use in public and private building ... ...
| Abstract | In the building material and stones market, lots of restrictions are coming in different world zones. In Europe, a recent regulatory set up the maximum level of radiological emissions for materials intended for use in public and private building structures. For this reason, companies need to have a very efficient radiological measurements system in their production chain, in order to respect all the rules and to be competitive in the world market. This article describes CORSAIR, a Cloud-Oriented Measurement System for Radiological Investigation and Traceability of Stones. Our cyber-physical system consists of sensing nodes network connected to a data collection gateway through LoRaWAN protocol, and interfaces with a centralized cloud application. CORSAIR introduces a fast, repeatable, real-time and non-destructive method to measure radiological emissions and other parameters of each single building material item, uniquely identified by an applied RFID tag. The validity of this system is confirmed by in-situ measurement campaign compared with high-precision laboratory analysis. The results demonstrate the accuracy of the CORSAIR sensor and the possibility to easily integrate it in the company production chain without any change. |
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| Sprache | Englisch |
| Erscheinungsdatum | 2021-01-07 |
| Erscheinungsland | Switzerland |
| Dokumenttyp | Journal Article |
| ZDB-ID | 2052857-7 |
| ISSN | 1424-8220 ; 1424-8220 |
| ISSN (online) | 1424-8220 |
| ISSN | 1424-8220 |
| DOI | 10.3390/s21020352 |
| Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
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Journal of environmental radioactivity
2018 Band 192, Seite(n) 105–116
Abstract: Proximal gamma-ray spectroscopy recently emerged as a promising technique for non-stop monitoring of soil water content with possible applications in the field of precision farming. The potentialities of the method are investigated by means of Monte ... ...
| Abstract | Proximal gamma-ray spectroscopy recently emerged as a promising technique for non-stop monitoring of soil water content with possible applications in the field of precision farming. The potentialities of the method are investigated by means of Monte Carlo simulations applied to the reconstruction of gamma-ray spectra collected by a NaI scintillation detector permanently installed at an agricultural experimental site. A two steps simulation strategy based on a geometrical translational invariance is developed. The strengths of this approach are the reduction of computational time with respect to a direct source-detector simulation, the reconstruction of |
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| Mesh-Begriff(e) | Computer Simulation ; Monte Carlo Method ; Radiation Monitoring/methods ; Reproducibility of Results ; Soil/chemistry ; Spectrometry, Gamma/methods ; Water/chemistry |
| Chemische Substanzen | Soil ; Water (059QF0KO0R) |
| Sprache | Englisch |
| Erscheinungsdatum | 2018-06-15 |
| Erscheinungsland | England |
| Dokumenttyp | Journal Article |
| ZDB-ID | 1483112-0 |
| ISSN | 1879-1700 ; 0265-931X |
| ISSN (online) | 1879-1700 |
| ISSN | 0265-931X |
| DOI | 10.1016/j.jenvrad.2018.06.001 |
| Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
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2022
Abstract: Soil texture is key information in agriculture for improving soil knowledge and crop performance, so the accurate mapping of this crucial feature is imperative for rationally planning cultivations and for targeting interventions. We studied the ... ...
| Abstract | Soil texture is key information in agriculture for improving soil knowledge and crop performance, so the accurate mapping of this crucial feature is imperative for rationally planning cultivations and for targeting interventions. We studied the relationship between radioelements and soil texture in the Mezzano Lowland (Italy), a 189 $km^2$ agricultural plain investigated through a ded-icated airborne gamma-ray spectroscopy survey. The K and Th abundances were used to retrieve the clay and sand content by means of a multi-approach method. Linear (simple and multiple) and non-linear (machine learning algorithms with deep neural networks) predictive models were trained and tested adopting a 1:50,000 scale soil texture map. The comparison of these approaches highlighted that the non-linear model introduces significant improvements in the prediction of soil texture fractions. The predicted maps of the clay and of the sand content were compared with the regional soil maps. Although the macro-structures were equally present, the airborne gam-ma-ray data permits us shedding light on finer features. Map areas with higher clay content were coincident with paleo-channels crossing the Mezzano Lowland in Etruscan and Roman periods, confirmed by the hydrographic setting of historical maps and by the geo-morphological features of the study area. Comment: 18 pages, 9 figures, 3 tables, correspondence to Andrea Maino via email at maino@fe.infn.it |
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| Schlagwörter | Physics - Geophysics |
| Thema/Rubrik (Code) | 630 |
| Erscheinungsdatum | 2022-08-13 |
| Erscheinungsland | us |
| Dokumenttyp | Buch ; Online |
| Datenquelle | BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl) |
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2004 Band 25, Heft 5, Seite(n) 191–193
Abstract: The Authors report a case of acute abdomen caused by a perforated solitary diverticulum of the cecum recently treated. This is a rare disease that usually is diagnosed, in the surgical theatre because it is a topic of emergency surgery. From Literature ... ...
| Titelübersetzung | Solitary perforated diverticulum of the cecum: a case report. |
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| Abstract | The Authors report a case of acute abdomen caused by a perforated solitary diverticulum of the cecum recently treated. This is a rare disease that usually is diagnosed, in the surgical theatre because it is a topic of emergency surgery. From Literature analysis it is obvious that a correct preoperative diagnosis is difficult to make because of the large number of possible abdominal pathologies with similar symptoms. Also the therapeutic approach is so extremely variable that the operation could range from a simple conservative type to right hemicolectomy. A proper approach will be conservative with a simple diverticulectomy when the inflammatory reaction is localized in the colonic wall while a right colectomy could be performed when the inflammatory reaction is more advanced or a large mass suggestive of a carcinoma is present. |
| Mesh-Begriff(e) | Abdomen, Acute/etiology ; Aged ; Cecal Diseases/complications ; Cecal Diseases/diagnosis ; Diverticulum/complications ; Diverticulum/diagnosis ; Female ; Humans ; Intestinal Perforation/complications ; Intestinal Perforation/diagnosis |
| Sprache | Italienisch |
| Erscheinungsdatum | 2004-05 |
| Erscheinungsland | Italy |
| Dokumenttyp | Case Reports ; English Abstract ; Journal Article |
| ZDB-ID | 605974-0 |
| ISSN | 1971-145X ; 0391-9005 |
| ISSN (online) | 1971-145X |
| ISSN | 0391-9005 |
| Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
| Zs.B 2760: Hefte anzeigen | Standort: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular ab Jg. 2022: Lesesaal (EG) |
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Agriculture. 2018 Apr. 19, v. 8, no. 4
2018
Abstract: Proximal soil sensors are taking hold in the understanding of soil hydrogeological processes involved in precision agriculture. In this context, permanently installed gamma ray spectroscopy stations represent one of the best space–time trade off methods ... ...
| Abstract | Proximal soil sensors are taking hold in the understanding of soil hydrogeological processes involved in precision agriculture. In this context, permanently installed gamma ray spectroscopy stations represent one of the best space–time trade off methods at field scale. This study proved the feasibility and reliability of soil water content monitoring through a seven-month continuous acquisition of terrestrial gamma radiation in a tomato test field. By employing a 1 L sodium iodide detector placed at a height of 2.25 m, we investigated the gamma signal coming from an area having a ~25 m radius and from a depth of approximately 30 cm. Experimental values, inferred after a calibration measurement and corrected for the presence of biomass, were corroborated with gravimetric data acquired under different soil moisture conditions, giving an average absolute discrepancy of about 2%. A quantitative comparison was carried out with data simulated by AquaCrop, CRITeRIA, and IRRINET soil–crop system models. The different goodness of fit obtained in bare soil condition and during the vegetated period highlighted that CRITeRIA showed the best agreement with the experimental data over the entire data-taking period while, in presence of the tomato crop, IRRINET provided the best results. |
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| Schlagwörter | biomass ; calibration ; data collection ; gamma radiation ; models ; monitoring ; precision agriculture ; sodium ; soil quality ; soil water ; soil water content ; spectroscopy ; tomatoes |
| Sprache | Englisch |
| Erscheinungsverlauf | 2018-0419 |
| Erscheinungsort | Multidisciplinary Digital Publishing Institute |
| Dokumenttyp | Artikel |
| ISSN | 2077-0472 |
| DOI | 10.3390/agriculture8040060 |
| Datenquelle | NAL Katalog (AGRICOLA) |
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2001 Band 53, Heft 5, Seite(n) 681–688
Abstract: Carcinoma of the body and tail of the pancreas still remains the disease form with the worst prognosis and evolution. In spite of a huge improvement in diagnostic methods, anaesthetic and surgical procedures and pre- and postoperative assistance, the ... ...
| Titelübersetzung | Carcinoma of the pancreatic body and tail. |
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| Abstract | Carcinoma of the body and tail of the pancreas still remains the disease form with the worst prognosis and evolution. In spite of a huge improvement in diagnostic methods, anaesthetic and surgical procedures and pre- and postoperative assistance, the results in terms of early diagnosis and long-term survival have been generally disappointing. The authors describe their own experience regarding three such tumours treated in five years, analysing the literature data, and referring to the current guidelines in diagnostics and surgical therapy. They then go on to propose a step-by-step approach to the management of these patients. The difficulty of obtaining an early diagnosis of the disease which derives from many factors, such as unspecific and late appearing symptoms, is stressed. They conclude by confirming the need to perform a radical resection, if possible, which, together with a combination of radio- and chemotherapy, is the only procedure capable of holding out some hope of a cure. |
| Mesh-Begriff(e) | Adenocarcinoma/diagnosis ; Aged ; Algorithms ; Female ; Humans ; Male ; Middle Aged ; Pancreatic Neoplasms/diagnosis |
| Sprache | Italienisch |
| Erscheinungsdatum | 2001-09 |
| Erscheinungsland | Italy |
| Dokumenttyp | English Abstract ; Journal Article ; Review |
| ZDB-ID | 603591-7 |
| ISSN | 0009-4773 |
| ISSN | 0009-4773 |
| Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
| Zs.B 101: Hefte anzeigen | Standort: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular ab Jg. 2022: Lesesaal (EG) |
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2017 Band 17, Heft 8
Abstract: Flight height is a fundamental parameter for correcting the gamma signal produced by terrestrial radionuclides measured during airborne surveys. The frontiers of radiometric measurements with UAV require light and accurate altimeters flying at some 10 m ... ...
| Abstract | Flight height is a fundamental parameter for correcting the gamma signal produced by terrestrial radionuclides measured during airborne surveys. The frontiers of radiometric measurements with UAV require light and accurate altimeters flying at some 10 m from the ground. We equipped an aircraft with seven altimetric sensors (three low-cost GNSS receivers, one inertial measurement unit, one radar altimeter and two barometers) and analyzed ~3 h of data collected over the sea in the (35-2194) m altitude range. At low altitudes (H < 70 m) radar and barometric altimeters provide the best performances, while GNSS data are used only for barometer calibration as they are affected by a large noise due to the multipath from the sea. The ~1 m median standard deviation at 50 m altitude affects the estimation of the ground radioisotope abundances with an uncertainty less than 1.3%. The GNSS double-difference post-processing enhanced significantly the data quality for H > 80 m in terms of both altitude median standard deviation and agreement between the reconstructed and measured GPS antennas distances. Flying at 100 m the estimated uncertainty on the ground total activity due to the uncertainty on the flight height is of the order of 2%. |
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| Sprache | Englisch |
| Erscheinungsdatum | 2017-08-16 |
| Erscheinungsland | Switzerland |
| Dokumenttyp | Journal Article |
| ZDB-ID | 2052857-7 |
| ISSN | 1424-8220 ; 1424-8220 |
| ISSN (online) | 1424-8220 |
| ISSN | 1424-8220 |
| DOI | 10.3390/s17081889 |
| Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
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