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Journal articles on the topic 'Feedbacks radioactifs'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Voss, R. "Radioactive and kinematic tracers of feedback from massive stars." EPJ Web of Conferences 19 (2012): 10004. http://dx.doi.org/10.1051/epjconf/20121910004.

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Iwata, Ren, Shigeki Yamazaki, and Tatsuo Ido. "Automated injection of a radioactive sample for preparative HPLC with feedback control." International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes 41, no. 12 (1990): 1225–27. http://dx.doi.org/10.1016/0883-2889(90)90211-x.

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3

Pysklywec, Russell N., and Christopher Beaumont. "Intraplate tectonics: feedback between radioactive thermal weakening and crustal deformation driven by mantle lithosphere instabilities." Earth and Planetary Science Letters 221, no. 1-4 (2004): 275–92. http://dx.doi.org/10.1016/s0012-821x(04)00098-6.

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Peng, Tianlin, Dewen Tang, and Jianing Wu. "Design of an autonomous navigation system for emergency disposal robots at radioactive waste sites under extreme climatic conditions." Journal of Physics: Conference Series 2419, no. 1 (2023): 012088. http://dx.doi.org/10.1088/1742-6596/2419/1/012088.

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Abstract There are many factors of environmental hazards that endanger the lives of personnel at radioactive waste sites after sudden extreme weather disasters, and the use of robotic substitutes can effectively safeguard the lives of personnel. For the situation where the environmental information of radioactive waste sites is unknown and there are many variables, an autonomous navigation system of emergency disposal robots with strong resilience and stability is designed. First, an algorithm based on the Rao-Blackwellized particle filtering theory is used in the autonomous navigation system

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Elbashti, Mahmoud E., Mariko Hattori, Amel Aswehlee, Atsushi Kaida, Yuka I. Sumita, and Noriyuki Wakabayashi. "A customized mono-block brachytherapy appliance for the treatment of mandibular gingival carcinoma: A case report." International Journal of Maxillofacial Prosthetics 8, no. 1 (2025): 7–11. https://doi.org/10.26629/ijmp.2025.03.

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This case report focuses on customizing a mono-block brachytherapy mold designed for the treatment of mandibular squamous cell carcinoma of the alveolar mucosa in an edentulous patient. A 90-year-old female patient was treated with radioactive gold-198 grains carried by a customized mono-block brachytherapy mold to deliver targeted radiation. A clear acrylic resin mold was designed to ensure precision, stability, and patient comfort, incorporating a chin cap retainer for enhanced retention. The mold's translucency facilitated accurate placement of radioactive gold-198 (198Au) grains, while a l

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Huang, Hanzhi. "Current status and applications of time-to-digital converters." Applied and Computational Engineering 53, no. 1 (2024): 79–83. http://dx.doi.org/10.54254/2755-2721/53/20241275.

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Time-to-Digital Converter (TDC) is widely used to realize time interval measurement. The high-precision time measurement technique has important applications in the fields of laser ranging, particle identification, and radioactive nuclear medicine engineering. Based on the existing literature research and data, this paper studies the application areas of TDC in the present development and analyzes the future prospects of TDC applications. The research results showed that: TDC, based on signal screening, realizes time interval measurement as the ultimate purpose of building the system and, at t

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Lin, Xiaofeng, Shoujun Zhou, Tiexiang Wen, Shenghao Jiang, Cheng Wang, and Jingtao Chen. "A novel multi-DoF surgical robotic system for brachytherapy on liver tumor: Design and control." International Journal of Computer Assisted Radiology and Surgery 16, no. 6 (2021): 1003–14. http://dx.doi.org/10.1007/s11548-021-02380-7.

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Abstract Purpose Radioactive seed implantation is an effective invasive treatment method for malignant liver tumors in hepatocellular carcinomas. However, challenges of the manual procedure may degrade the efficacy of the technique, such as the high accuracy requirement and radiation exposure to the surgeons. This paper aims to develop a robotic system and its control methods for assisting surgeons on the treatment. Method We present an interventional robotic system, which consists of a 5 Degree-of-Freedom (DoF) positioning robotic arm (a 3-DoF translational joint and a 2-DoF revolute joint) a

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Pan, Lung-Fa, Chao-Yu Chiang, Chao-Chun Huang, et al. "Thyroid Biokinetics for Radioactive I-131 in Twelve Thyroid Cancer Patients via the Refined Nine-Compartmental Model." Applied Sciences 12, no. 11 (2022): 5538. http://dx.doi.org/10.3390/app12115538.

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The thyroid biokinetic model of radioactive I-131 was re-evaluated using a refined nine-compartmental model and applied to twelve thyroid cancer patients. In contrast to the simplified four-compartmental model regulated by the ICRP-56 report, the revised model included nine compartments specified in the ICRP-128 report, namely, oral, stomach, body fluid, thyroid, whole body, liver, kidney, bladder, and remainder (i.e., the whole body minus kidney and bladder). A self-developed program run in MATLAB was designed to solve the nine first-order simultaneous linear differential equations. The model

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Wissmeier, Laurin, and Joachim Poppei. "Simulating the feedback between corrosive gas generation and water availability for the evaluation of radionuclide mobility in the context of radioactive waste disposal." Safety of Nuclear Waste Disposal 1 (November 10, 2021): 109–10. http://dx.doi.org/10.5194/sand-1-109-2021.

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Abstract. It has been recently recognized that the availability of liquid water may be a controlling factor in the feedback between the physical processes of variably saturated liquid and gas flow on the one hand, and various chemical processes such as metal corrosion in an underground storage facility for radioactive waste on the other hand (e.g., Huang et al., 2021, and reference therein). Iron corrosion in anoxic conditions produces hydrogen gas and consumes water, as expressed by the following stylized chemical equation (e.g., Diercks and Kassner, 1988; Senior et al., 2021): 3Fe+4H2O⟶Fe3O4

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Васин, М., M. Vasin, В. Соловьев, et al. "Primary Radiation Stress, Inflammatory Reaction and the Mechanism of Early Postradiation Reparative Processes in Irradiated Tissues." Medical Radiology and radiation safety 63, no. 6 (2018): 71–81. http://dx.doi.org/10.12737/article_5c0eb50d2316f4.12478307.

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The products of radiolysis released from cellular compartment under the influence of ionizing radiation: highly mobile groups of proteins, damaged nuclear and mitochondrial DNA, extracellular ATP and oxidized low density lipoproteins, cause stress activation in irradiated tissues through a pattern of the receptors with start of the cascade r53 and NF-κB of pro-inflammatory ways conducting to an expression of pro-inflammatory genes stimulating synthesis of cytokines of the IL-1 family. Excessive activation of pro-inflammatory way under the influence of a radioactive stress is limited to synthes

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Stevanović, Jelenka Savković. "Ecosystem Energy Changes." International Journal of Research and Scientific Innovation X, no. XII (2024): 267–75. http://dx.doi.org/10.51244/ijrsi.2023.1012022.

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In this paper energy in ecosystem was studied. Energy balance equations of ecosystem were derived. Most of the energy in the Earth’s system comes from just a few sources: solar energy, gravity, radioactive decay, and the rotation of the earth. Earth is constantly changing as energy flows through the system. Earth’s weather and climate are mostly driven by energy from the Sun. The Sun provides the energy that drives the water cycle on Earth. In this paper different forms of energy, specific types, using and energy conservation were studied. Environments are highly complex systems whose evolutio

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Pauwels, H., P. Daures, Y. J. Stockmann, and J. Végh. "Cooperation between SSTC NRS and the EU in the Area of Nuclear Safety." Nuclear and Radiation Safety, no. 2(74) (May 22, 2017): 3–8. http://dx.doi.org/10.32918/nrs.2017.2(74).01.

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The paper first briefly outlines the main characteristics of the EU assistance programs aimed to enhance nuclear safety in the Beneficiary countries. Then EU assistance provided to the Ukrainian regulator (SNRIU) is detailed, with specific emphasis on projects enhancing the capabilities of SSTC NRS as technical support organisation (TSO) to SNRIU, including training and tutoring (T&T) activities. The changing role of SSTC NRS in the cooperation activities is described as well. The broad range of cooperation is then illustrated by some selected projects focusing on various technical areas (

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Regal, Georg, Daniele Pretolesi, Helmut Schrom-Feiertag, et al. "Challenges in Virtual Reality Training for CBRN Events." Multimodal Technologies and Interaction 7, no. 9 (2023): 88. http://dx.doi.org/10.3390/mti7090088.

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The contemporary geopolitical environment and strategic uncertainty shaped by asymmetric and hybrid threats urge the future development of hands-on training in realistic environments. Training in immersive, virtual environments is a promising approach. Immersive training can support training for contexts that are otherwise hard to access, dangerous, or have high costs. This paper discusses the challenges for virtual reality training in the CBRN (chemical, biological, radioactive, nuclear) domain. Based on initial considerations and a literature review, we conducted a survey and three workshops

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Wei, X., P. Wang, and F. Zhao. "Optimal operation strategy of LWR based on the PCI online prognosis model." Kerntechnik 85, no. 2 (2020): 98–104. http://dx.doi.org/10.1515/kern-2020-850206.

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Abstract The pellet-cladding interaction (PCI) is one of the major issues in fuel rod during the power change operation in light water reactors (LWR). The frequent power transient will lead to the PCI failure, which results in the radioactive leakage. Unfortunately, the failure cannot be detected on time during operation. For solving this problem, the PCI results is calculated and predicted before the power transient, and the results is used for optimizing the operation strategy. As everyone knows, the calculation of the fuel is a cumbersome work, which is not fit for online evaluation. At fir

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Krause, Martin G. H., Donna Rodgers-Lee, James E. Dale, Roland Diehl, and Chiaki Kobayashi. "Galactic 26Al traces metal loss through hot chimneys." Monthly Notices of the Royal Astronomical Society 501, no. 1 (2020): 210–18. http://dx.doi.org/10.1093/mnras/staa3612.

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ABSTRACT Radioactive 26Al is an excellent tracer for metal ejection in the Milky Way, and can provide a direct constraint on the modelling of supernova feedback in galaxy evolution. Gamma-ray observations of the 26Al decay line have found high velocities and hence require a significant fraction of the Galactic 26Al in the hot component. At the same time, meteoritic data combined with simulation results suggest that a significant amount of 26Al makes its way into stars before decay. We investigated the distribution into hot and cold channels with a simulation of a Milky-Way-like galaxy with mas

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Ormai, Peter, Bálint Nős, Jiří Faltejsek, et al. "Development of guidance documents in the EURAD and PREDIS projects." EPJ Nuclear Sciences & Technologies 8 (2022): 39. http://dx.doi.org/10.1051/epjn/2022035.

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Particular emphasis is dedicated to Knowledge Management activities within the EURAD (European Joint Programme on Radioactive Waste Management) and PREDIS (Pre-disposal management of radioactive waste) projects to ensure the capture of existing knowledge, transfer of knowledge between Members States and management of the knowledge for future generations. The EURAD project has three work packages dedicated to knowledge management. One of them, the EURAD Guidance work package (WP12) is developing a comprehensive suite of specific guidance documents that can be used by Members States with radioac

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Pleintinger, Moritz M. M., Thomas Siegert, Roland Diehl, et al. "Comparing simulated 26Al maps to gamma-ray measurements." Astronomy & Astrophysics 632 (December 2019): A73. http://dx.doi.org/10.1051/0004-6361/201935911.

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Context. The diffuse gamma-ray emission of 26Al at 1.8 MeV reflects ongoing nucleosynthesis in the Milky Way and traces massive-star feedback in the interstellar medium due to its 1 Myr radioactive lifetime. The morphology and dynamics of the interstellar medium are investigated in astrophysics through 3D hydrodynamic simulations in fine detail as there are few suitable astronomical probes available. Aims. We aim to compare a galactic-scale hydrodynamic simulation of the Galaxy’s interstellar medium, including feedback and nucleosynthesis, with gamma-ray data on 26Al emission in the Milky Way,

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Benbow, Steven, James Wilson, Richard Metcalfe, and Jarmo Lehikoinen. "Avoiding unrealistic behaviour in coupled reactive-transport simulations of cation exchange and mineral kinetics in clays." Clay Minerals 54, no. 1 (2019): 83–93. http://dx.doi.org/10.1180/clm.2019.7.

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AbstractBentonite clay is often included as a buffer, backfill and/or sealing material in designs for deep geological repositories for radioactive wastes. It is expected that bentonite materials may undergo some mineralogical alteration as they interact with in situ groundwaters over long timescales on the order of thousands to millions of years. Long-term modelling of these materials is therefore important in order to demonstrate confidence that the engineered designs will continue to perform as required over their intended lifetimes (required assessment timescales can be up to 1 million year

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Wang, Yuan Ming, Yong Ming Zhang, Heng Ze Zhao, and Lan Ming Zhao. "Experimental Investigation of Downward Flame Spread over RPU Samples." Applied Mechanics and Materials 328 (June 2013): 921–25. http://dx.doi.org/10.4028/www.scientific.net/amm.328.921.

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The combustion process of polymer is a complex coupling of energy feedback from flame to fuel surface with degradation of polymer. In this paper, a series of comparative laboratory-scale experiments were carried out to study the effect of sample width on downward flame spread over the rigid polyurethane (RPU) foam, a typical thermal insulation material. The variations of some important parameters such as flame height, pulsation frequency and flame spread rate were measured and analyzed. Results show that if the width fixed, the parameters mentioned above independent with time. If the width les

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Diehl, Roland, Jochen Greiner, Martin G. H. Krause, Moritz M. M. Pleintinger, and Thomas Siegert. "Gamma-ray spectroscopy of galactic nucleosynthesis." EPJ Web of Conferences 279 (2023): 02001. http://dx.doi.org/10.1051/epjconf/202327902001.

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Diffuse gamma-ray emission from the decay of radioactive 26Al is a messenger from the nucleosynthesis activity in our current-day galaxy. Because this material is attributed to ejections from massive stars and their supernovae, the gamma-ray signal includes information about nucleosynthesis in massive star interiors as it varies with evolutionary stages, and about their feedback on the surrounding interstellar medium. Our method of population synthesis of massive-star groups has been refined as a diagnostic tool for this purpose. It allows to build a bottom-up prediction of the diffuse gamma-r

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Tatomir, Alexandru, Milena Schönhofen-Romer, Astrid Göbel, et al. "Procedures to involve knowledge providers for capturing the state of knowledge in radioactive waste management: insights from the European Joint Programme on Radioactive Waste Management." Safety of Nuclear Waste Disposal 2 (September 6, 2023): 225–26. http://dx.doi.org/10.5194/sand-2-225-2023.

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Abstract. Capturing the state of knowledge (SoK) in radioactive waste management (RWM) is a very important activity for supporting member states with the implementation of their national programmes towards the safe and effective management of radioactive waste. This requires the involvement of experts (i.e. persons widely recognised to be a reliable source of knowledge or have techniques or skills) who can share their expertise and knowledge with the wider community through the production of knowledge management (KM) documents (i.e. of domain insight (DI) and SoK; Knuuti et al., 2022). During

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Li, XianLing, DongJiang Han, XinFa Dai, et al. "Fault Diagnosis to Nuclear Power Plant System Based on Time-Series Convolution Neural Network." Wireless Communications and Mobile Computing 2022 (September 5, 2022): 1–14. http://dx.doi.org/10.1155/2022/3323239.

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Nuclear power plant (NPP) is a highly complex engineering system which has typical internal feedback and strong component coupling. With these features, most NPP systems have high risk of radioactive release, which makes it essential to perform fault detection (FD) to the NPP systems. To address this challenge, this paper proposes a FD mechanism named characteristic time-series convolutional neural network (CT-CNN) based on principal component analysis (PCA), time-series analysis, and convolutional neural network (CNN) mechanisms. First, the models of NPP FD system are formulated. Then, the PC

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Medeckytė, Kamilė, and Daiva Tamulevičienė. "Development of environmental management accounting system: a conceptual approach." Buhalterinės apskaitos teorija ir praktika, no. 27 (May 2, 2023): 2. http://dx.doi.org/10.15388/batp.2023.51.

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With the rise of environmental problems caused by human activities, such as misuse of natural resources, rapid deforestation, and discharge of radioactive and other chemical waste into water bodies, soil and the atmosphere, environmental management accounting has emerged as a tool for promoting sustainable development and reducing negative environmental impacts in businesses. This area of accounting provides a means for analyzing, assessing, controlling, and managing the environmental performance of companies. However, there is a dearth of studies in the scientific literature that systematical

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Brito, H., R. Cazar, N. Moreno, et al. "Manejo De Residuos Sólidos Hospitalarios En La Unidad Oncológica Solca-Chimborazo." European Scientific Journal, ESJ 12, no. 8 (2016): 423. http://dx.doi.org/10.19044/esj.2016.v12n8p423.

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It was determined that the handling of the solid waste generated by the SOLCA – Chimborazo cancer hospital was not appropriate, both internally and externally. Because of that, the classification, transport, storage, deactivation, and intermediate disposition are inconvenient. Thus, it was realized that it is important to have the requirements and documents to follow and comply the objectives that are specified within the management, focusing on feedback and continuous improvement. To learn about the nature of the generated residuals, they were characterized in the hospital. Common, infectious

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Papafotiou, Alexandros, Argha Namhata, Abhishek Singh, Mark Williams, Marius Jigmond, and Paul Marschall. "A workflow for parametric sensitivity analysis of heat and gas release from a deep geological repository for SF/HLW." Geological Society, London, Special Publications 482, no. 1 (2018): 149–73. http://dx.doi.org/10.1144/sp482.2.

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AbstractA key component of the site comparison planned for the deep geological disposal of spent fuel and high-level waste (SF/HLW) in Switzerland is the assessment of the evolution of repository-induced perturbations in the repository nearfield associated with thermal effects from heat production due to radioactive decay of radionuclides, as well as gas pressures developing in the backfilled underground structures from the anaerobic corrosion of the steel waste canisters and tunnel support materials. The assessment of such effects is integrated in the site comparison through safety indicators

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Ananyev, Sergey, and Andrei Kukushkin. "Calculation of Consistent Plasma Parameters for DEMO-FNS Using Ionic Transport Equations and Simulation of the Tritium Fuel Cycle." Applied Sciences 13, no. 14 (2023): 8552. http://dx.doi.org/10.3390/app13148552.

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Modeling the D and T fluxes in Fusion Neutron Source based on a tokamak fuel cycle systems was performed consistently with the core and divertor plasma. An indirect integration of ASTRA, SOLPS4.3, and FC-FNS codes is used. The feedback coupling is realized between the pumping and puffing systems in the form of changes in the isotopic composition of the core and edge plasma. In the ASTRA code, instead of electrons, ions were used in the particle transport equations. This allows better estimates of the flows of the D/T components of the fuel that have to be provided by the gas puffing and proces

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Tuck, Adrian F. "Anthropogenic Impacts in the Lower Stratosphere: Scale Invariant Analysis." Atmosphere 15, no. 4 (2024): 465. http://dx.doi.org/10.3390/atmos15040465.

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Aircraft and rockets entered the lower stratosphere on a regular basis during World War II and have done so in increasing numbers to the present. Atmospheric testing of nuclear weapons saw radioactive isotopes in the stratosphere. Rocket launches of orbiters are projected to increase substantially in the near future. The burnup of orbiters has left signatures in the aerosol. There are proposals to attenuate incoming solar radiation by deliberate injection of artificial aerosols into the stratosphere to “geoengineer” cooling trends in surface temperature, with the aim of countering the heating

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Dal Bello, Federica, Enrica Mecarelli, Daniela Gastaldi, Francesco Savino, and Claudio Medana. "Nano-HPLC-HRMS Analysis to Evaluate Leptin Level in Milk Samples: A Pilot Study." Applied Sciences 10, no. 17 (2020): 6135. http://dx.doi.org/10.3390/app10176135.

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Leptin is a 16 kDa lipophilic protein hormone secreted by adipocytes and its most significant function is to inform the brain with negative feedback that regulates food intake. Recently the protein found in human breast milk was related to breast feeding and onset of obesity, and the evidence of a low probability to develop pediatric obesity in children fed with breast milk was also confirmed. Since leptin could have a critical role, its quantitation both in human breast, bovine milk and in infant formula products is interesting. For this reason, we developed an analytical method based on immu

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Štibinger, Petr, George Broughton, Filip Majer, et al. "Towards new frontiers in mobile manipulation: Team CTU-UPenn-NYU at MBZIRC 2020." Field Robotics 2, no. 1 (2022): 75–106. http://dx.doi.org/10.55417/fr.2022004.

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In this paper we present an autonomous robotic system for picking, transporting, and precisely placing magnetically graspable objects. Such a system would be especially beneficial for construction tasks where human presence is not possible, e.g. due to chemical or radioactive pollution. The system comprises of two primary components – a wheeled, mobile platform and a manipulator arm. Both are interconnected through an onboard computer and utilize various onboard sensors for estimating the state of the robot and its surroundings. By using efficient processing algorithms, data from the onboard s

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Fujimoto, Yusuke, Mark R. Krumholz, and Shu-ichiro Inutsuka. "Distribution and kinematics of 26Al in the Galactic disc." Monthly Notices of the Royal Astronomical Society 497, no. 2 (2020): 2442–54. http://dx.doi.org/10.1093/mnras/staa2125.

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ABSTRACT 26Al is a short-lived radioactive isotope thought to be injected into the interstellar medium (ISM) by massive stellar winds and supernovae (SNe). However, all-sky maps of 26Al emission show a distribution with a much larger scale height and faster rotation speed than either massive stars or the cold ISM. We investigate the origin of this discrepancy using an N-body + hydrodynamics simulation of a Milky-Way-like galaxy, self-consistently including self-gravity, star formation, stellar feedback, and 26Al production. We find no evidence that the Milky Way’s spiral structure explains the

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Ning, Junya, та Jinpu Yu. "Abstract 1426: Mechanism study of METTL3/HIF-2α positive feedback loop promoting multidrug resistance in anaplastic thyroid carcinoma". Cancer Research 85, № 8_Supplement_1 (2025): 1426. https://doi.org/10.1158/1538-7445.am2025-1426.

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Abstract Research Background: Anaplastic Thyroid Carcinoma (ATC) is an extremely lethal malignant tumor, with patients having an average survival period of typically less than five months. For ATC patients, conventional treatment methods such as surgery and radioactive iodine therapy are not effective. To date, there is no widely recognized standard treatment protocol, which has resulted in no significant improvement in patient survival rates over the past several decades. In clinical treatment, chemotherapeutic drugs doxorubicin and cisplatin are the primary treatment methods. Additionally, r

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Debie, Pieterjan, Noemi B. Declerck, Danny van Willigen, et al. "The Design and Preclinical Evaluation of a Single-Label Bimodal Nanobody Tracer for Image-Guided Surgery." Biomolecules 11, no. 3 (2021): 360. http://dx.doi.org/10.3390/biom11030360.

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Intraoperative guidance using targeted fluorescent tracers can potentially provide surgeons with real-time feedback on the presence of tumor tissue in resection margins. To overcome the limited depth penetration of fluorescent light, combining fluorescence with SPECT/CT imaging and/or gamma-ray tracing has been proposed. Here, we describe the design and preclinical validation of a novel bimodal nanobody-tracer, labeled using a “multifunctional single attachment point” (MSAP) label, integrating a Cy5 fluorophore and a diethylenetriaminepentaacetic acid (DTPA) chelator into a single structure. A

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Ma, Kun L., Zac Varghese, Yin Ku, et al. "Sirolimus inhibits endogenous cholesterol synthesis induced by inflammatory stress in human vascular smooth muscle cells." American Journal of Physiology-Heart and Circulatory Physiology 298, no. 6 (2010): H1646—H1651. http://dx.doi.org/10.1152/ajpheart.00492.2009.

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Inflammatory stress accelerates the progression of atherosclerosis. Sirolimus, a new immunosuppressive agent, has been shown to have pleiotropic antiatherosclerotic effects. In this study we hypothesized that sirolimus inhibits 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR)-mediated cholesterol synthesis in human vascular smooth muscle cells (VSMCs) under inflammatory stress. Using radioactive assay, we demonstrated that sirolimus inhibited the increase of interleukin-1β (IL-1β)-induced cholesterol synthesis in VSMCs. Further studies showed that sirolimus inhibited both the HMGR gene a

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KANDA, Reiko, Shin SAIGUSA, Tadaaki BAN-NAI, et al. "The Report of the ICRU Expert Workshop on Radiation Monitoring for Protection of the Public after Major Radioactive Release to the Environment: Feedback from the Accident at the Fukushima Daiichi NPS." Japanese Journal of Health Physics 52, no. 1 (2017): 42–47. http://dx.doi.org/10.5453/jhps.52.42.

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Yuan, Yilong, Tianfu Xu, Fabrizio Gherardi, and Hongwu Lei. "Thermo-Hydro-Mechanical Coupled Modeling of In-Situ Behavior of the Full-Scale Heating Test in the Callovo-Oxfordian Claystone." Energies 15, no. 11 (2022): 4089. http://dx.doi.org/10.3390/en15114089.

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Within the context for deep geological disposal (DGD) of high-level radioactive waste (HLW), thermo-hydro-mechanical (THM) coupled numerical modeling has become significantly important for studying the safe disposal of HLW. In this work, a 3D mechanical module is incorporated into the thermal–hydraulic (TH) coupled code TOUGH2, thus forming an integrated THM coupled simulator referred to as TOUGH2Biot. The Galerkin finite element method is used to discretize the space for rock mechanical calculation. The mechanical process is sequentially coupled with the fluid and heat flow processes, which f

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Pinaroli, G., S. Herrmann, S. Miryala, et al. "Multi-channel front-end ASIC for a 3D position-sensitive detector." Journal of Instrumentation 17, no. 02 (2022): C02011. http://dx.doi.org/10.1088/1748-0221/17/02/c02011.

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Abstract Arrays of 3D position-sensitive detectors (3DPSD), operating at room temperature and using cadmium zinc telluride (CZT) and thallium bromide (TIBr) sensors, are suitable for gamma-ray spectrometry in many applications. One detector configuration, the 3D position-sensitive Virtual Frisch-Grid detector (VFG), is particularly advantageous for integrating into large area arrays. The signals generated inside each detector of the array are captured with the anode, cathode and four pads that enable the reconstruction of the position and energy of the ionizing interaction by measurements of a

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Pozharkova, I. N., S. V. Chentsov, S. G. Tsarichenko, Yu I. Gorban, and S. G. Nemchinov. "Methodology of Real-Time Forecast of Fire-Extinguishing Agent Jet Trajectory from Fire Robot Monitor." Occupational Safety in Industry, no. 3 (March 2025): 14–20. https://doi.org/10.24000/0409-2961-2025-3-14-20.

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The study is dedicated to the development of a methodology of real-time forecasting of the movement trajectory of a fire-extinguishing agent from a fire gun carriage considering various external disturbances. Multiple problems of fire robot management, particularly targeting a jet to a fire source, protected equipment or building structures, precipitated clouds of poisonous or radioactive gases, vapors, dusts, etc., can be solved based on the methodology. One of the main problems in the applied field considered is the impact on the movement of a fire-extinguishing agent that can significantly

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Hormann, Volker, Anna Kogiomtzidis, and Clemens Walther. "Improvement by public participation? The case of the German calculation basis for the dose assessment for final disposal of high-level waste (HLW)." Safety of Nuclear Waste Disposal 2 (September 6, 2023): 247. http://dx.doi.org/10.5194/sand-2-247-2023.

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Abstract. In April 2022, the Federal Office for the Safety of Nuclear Waste Management (BASE) invited the public to comment on the previously issued draft of the “Berechnungsgrundlage für die Dosisabschätzung bei der Endlagerung von hochradioaktiven Abfällen” (Calculation basis for dose assessment of the final disposal of high-level radioactive waste); 360 comments and suggestions were submitted, especially concerning radioecological modelling. In a table that was made publicly available, many of the issues raised were commented on, but not all of them. At the end of June 2022, an expert works

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Kodintseva, Е. А., and А. А. Akleyev. "Delayed correlated parameters of adaptive and innate immunity in chronically irradiated subjects." Russian Journal of Immunology 23, no. 2 (2020): 225–30. http://dx.doi.org/10.46235/1028-7221-399-dcp.

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Radiation-induced changes in the immune system develop quite early after the onset of radiation exposure and persist over a long time after it's removal. In case of chronic radiation exposure at dose rate lower than 0.1 Gy/year, the threshold of annual dose to suppress red bone marrow hemato- and immunopoiesis reaches 0.3-0.5 Gy. It was shown that adaptation mechanisms are triggered under the chronic impact of ionizing radiation in the hematopoietic system. In our study we quantitatively and qualitatively analyzed relationships between individual arms of the immune system which is important fo

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Göbel, Astrid, Tobias Knuuti, Carola Franzen, et al. "State-of-Knowledge and Guidance in EURAD Knowledge Management (Work Packages 11 State-of-Knowledge & 12 Guidance)." Safety of Nuclear Waste Disposal 1 (November 10, 2021): 249–50. http://dx.doi.org/10.5194/sand-1-249-2021.

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Abstract. EURAD, the European Joint Programme on Radioactive Waste Management (RWM), is the European Research Programme on RWM, aimed at supporting member states with the implementation of their national programmes. It brings together over 100 organisations from different backgrounds and countries, which work together in RD&amp;D projects, Strategic Studies and Knowledge Management (KM). The importance of KM is recognised by EURAD and reflected in a number of activities. One essential activity is the capture of the current State-of-Knowledge in the field of RWM and its transfer to the impl

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Kraan, G. P. B., T. E. Chapman, N. M. Drayer, B. Colenbrander, and G. Buwalda. "Kinetic measurement of the urinary production rate of cortisol in male piglets: is the prerequisite 'collection until all label has disappeared' necessary?" Journal of Endocrinology 111, no. 3 (1986): 439–48. http://dx.doi.org/10.1677/joe.0.1110439.

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ABSTRACT Urinary cortisol production rate (CPR) was calculated by two different methods in five male piglets (about 3 kg bodyweight) injected i.v. with 40–120 kBq tritiated cortisol ([3H]F). After administration of [3H]F, urine was obtained from four consecutive collections for the following 2 days, during which 80–100% of the label was recovered. Total radioactivity in the urine was measured and used to calculate the total rate constant of 0·115 ± 0·011 h−1 and, from this, the mean biological half-life (t½) of 6·0±0·6 h (s.d.; n = 4). It was found that the mass ratio of the two principal urin

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Rozental, Jose de Julio. "Two decades of radiological accidents direct causes, roots causes and consequences." Brazilian Archives of Biology and Technology 45, spe (2002): 125–33. http://dx.doi.org/10.1590/s1516-89132002000500018.

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Practically all Countries utilize radioisotopes in medicine, industry, agriculture and research. The extent to which ionizing radiation practices are employed varies considerably, depending largely upon social and economic conditions and the level of technical skills available in the country. An overview of the majority of practices and the associated hazards will be found in the <A HREF="#tabela4">Table IV</A> to <A HREF="#tabela7">VII</A> of this document. The practices in normal and abnormal operating conditions should follow the basic principles of radiation protect

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Hosokawa, S., A. Nakamura, H. Ose, et al. "Evaluating the Educational Effectiveness of Surface Radioactive Contamination Survey Techniques." Radioprotection, March 12, 2025. https://doi.org/10.1051/radiopro/2025009.

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In this study, we evaluated the educational effectiveness of training by reviewing recorded data on contamination survey techniques and real-time display feedback. An optical flow (OF) sensor and a distance sensor were used to measure the speed and distance, respectively. The sensors were mounted on a radiation measuring device, and the contamination survey techniques of the 12 participants were recorded. The recorded data and real-time technique feedback was used to conduct training, after which the participants performed contamination surveys once more. Speed and distance both significantly

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Yi, Liang, Sun Junjie, Wang Buyun, Zhang Yongde, and Xu Yong. "Design of a seed implantation robot with puncture force and image feedback mechanism for prostate cancer brachytherapy." International Journal of Advanced Robotic Systems 21, no. 5 (2024). http://dx.doi.org/10.1177/17298806241281847.

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This article focuses on the structural design of a surgical robot for radioactive prostate seed implantation and the position detection algorithm for the puncture needle. A seed implantation robot with the ability to pierce with force and receive image feedback is created to increase the positioning precision and puncture stability of the robot as well as to determine the real-time position of the puncture needle. Compared with existing puncture schemes, we use a statistical model approach for classification and a deep learning-based target detection algorithm. Since different human tissues ha

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Schmerling, Kaspar, Hajrudin Bešić, Andreas Kugi, Silvan Schmid, and Andreas Deutschmann-Olek. "Optimal sensing of momentum kicks with a feedback-controlled nanomechanical resonator." Physical Review Applied 23, no. 5 (2025). https://doi.org/10.1103/physrevapplied.23.054016.

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External disturbances exciting a mechanical resonator can be exploited to gain information on the environment. Many of these interactions manifest as momentum kicks, such as the recoil of residual gas, radioactive decay, or even hypothetical interactions with dark matter. These disturbances are often rare enough that they can be resolved as singular events rather than cumulated as force noise. While high-Q resonators with low masses are particularly sensitive to such momentum kicks, they will strongly excite the resonator, leading to nonlinear effects that deteriorate sensing performance. Henc

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Takei, Yuki, and Daichi Tsuna. "Detached Circumstellar Matter as an Explanation for Slowly-Rising Interacting Type Ibc Supernovae." Open Journal of Astrophysics 7 (December 19, 2024). https://doi.org/10.33232/001c.127610.

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Some hydrogen-poor (Type Ibc) supernovae (SNe) are known to have massive circumstellar matter (CSM) that are well detached from the star. Using the open-source code , we construct a grid of models of SN Ibc interacting with detached CSM, inspired by a recently proposed scenario of such CSM generated by a mass eruption and feedback process from the leftover star. We find that interaction with detached CSM can produce a slowly rising phase in the light curve seen in some interacting SN Ibc, which is difficult to reproduce by interaction with continuously distributed CSM down to the star. We also

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Kaushal, Nihal, Sudheer Patri, Ramesh Kumar Sharma, and B. K. Sreedhar. "Lessons Learned from Failures and Design Improvements for Large Diameter Seals." Journal of Failure Analysis and Prevention, May 22, 2024. http://dx.doi.org/10.1007/s11668-024-01944-4.

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AbstractLarge diameter seals are used in Prototype Fast Breeder Reactor (PFBR) to prevent the escape of radioactive argon cover gas through wide annular gaps. The design of these seals shall address different challenges than normal seals. The large tolerances needed on the width of annulus, achievable tolerances on rubber, clearances in the seal holder, etc., influence the seal performance. The paper discusses analytical and experimental work done to develop robust large diameter seals. The contours of the present study are based on the feedback from the testing and qualification of small size

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Zhu, Guangyu, Junxia Wu, Jia Yin, et al. "Stochastic cooling notch filter developments for the high-precision spectrometer ring in the high intensity heavy-ion accelerator facility project." Review of Scientific Instruments 94, no. 9 (2023). http://dx.doi.org/10.1063/5.0166975.

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Stochastic cooling of the high-precision spectrometer ring (SRing) at the High Intensity Heavy-Ion Accelerator Facility (HIAF) project in China, which is used mainly for experiments with radioactive fragment beams, is applied to speed up the cooling process of a stored ion beam. In this article, a new coaxial-type notch filter with an amplitude equalizer in the long branch and an optical-type notch filter with phase-stabilized optical fiber are discussed and evaluated for the SRing stochastic cooling system. Both prototypes of coaxial and optical notch filters are fabricated and tested. The mi

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Egres, Dorottya, and Gábor Sarlós. "Nuclear perceptions from radioactive blue to sustainable green: The EU taxonomy as reflection of a divided public." Journal of Public Affairs, November 23, 2023. http://dx.doi.org/10.1002/pa.2901.

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Following the Fukushima disaster, several European countries revisited their policies and decided to phase out nuclear energy production. More recently, however, the EU taxonomy proposed a classification system of environmentally sustainable economic activities and consequently reopened the debate regarding nuclear energy. This study analyses public comments about the inclusion or exclusion of nuclear energy as a response to climate change, in the conceptual frameworks of ecological modernization, sustainability and technological neutrality. The study highlights the challenge of shaping energy

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Geger, Emilia, Aleksandr Podvesovskii, Oksana Mikhaleva, and Anton Korsakov. "Intelligent Analysis of the Ecological State of Environment with Application of Distributed Expertise (on the Example of Bryansk Region)." Proceedings of the 30th International Conference on Computer Graphics and Machine Vision (GraphiCon 2020). Part 2, December 17, 2020, paper77–1—paper77–10. http://dx.doi.org/10.51130/graphicon-2020-2-3-77.

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The paper considers the problem of assessing the ecological state of the environment in the region. An approach to the intelligent analysis and estimation of anthropo-technogenic pollution of a territory with the application of integral indicators which take into account environmental pollution is proposed. To estimate the integral indicator parameters, distributed group expertise technology is used, supporting a mechanism for control of expert estimates consistency, taking into account experts’ competency in the relevant subject areas. Using the proposed approach, the problem of risk assessme

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