Bibliographies thématiques / Uranian literature

Littérature scientifique sur le sujet « Uranian literature »

Auteur : Grafiati
Publié le 27 juillet 2024
Mis à jour le 29 juillet 2024

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Articles de revues sur le sujet "Uranian literature"

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Miller, James E. « T. S. Eliot's “Uranian Muse” : The Verdenal Letters ». ANQ : A Quarterly Journal of Short Articles, Notes and Reviews 11, no 4 (janvier 1998) : 4–20. http://dx.doi.org/10.1080/08957699809601265.

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Boetzkes, Amanda, et Jeff Diamanti. « Geofetishism and the Tender Violence of Rare Earths ». SubStance 52, no 3 (2023) : 9–30. http://dx.doi.org/10.1353/sub.2023.a913888.

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Abstract: This article addresses the geospeculation of Kuannersuit, a mountain in southwest Greenland that holds a major deposit of rare earth minerals, including uranium. Through the concepts of “geofetishism” and “tender violence,” we consider the history of mineral speculation in Greenland, and how its colonial history bears on the now independent (Inuit) Greenlandic government, and the township of Narsaq. With a focus on the anti-uranium activist group, Urani? Naamik! , we show the challenges posed to Greenlanders in their resistance to the mobilization of their mineral resources by the Australian mining company, Greenland Minerals and Energy (now renamed Energy Transition Minerals). A highlight of this resistance, in our view, is Urani Naamik’s counter-analysis of GME’s environmental assessment report.
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Mussayeva, E. M., et M. M. Bakhtin. « Уран кенін өндіретін аймақтарда “топырақ-өсімдік” тізбегіндегі радионуклидтердің миграциясына баға беру (әдеби шолу) ». BULLETIN of the L.N. Gumilyov Eurasian National University. BIOSCIENCE Series 142, no 1 (2023) : 124–35. http://dx.doi.org/10.32523/2616-7034-2023-142-1-124-135.

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It is well known that as a result of the activities of the mining industry, radionuclides and chemicals with active mutagenic and carcinogenic effects can be extracted to the surface. Disposal products, such as radioactive waste and others, may cause particular danger. In this regard, this requires regular monitoring of radioactive waste storage sites and the degree of migration of radionuclides and heavy metals in environmental objects. This review article considers the uranium ore region’s current data for the content of radionuclides in soil, vegetation, and their migration in the “soil-plant” chain.
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Zhu, Min, Hanyuan Mao, Yanjun Wang, Ming Guo, Biao Li, Fei Wu, Jie Tian et Desheng Ma. « Study on the Equivalence of Metallic-Cerium-Simulated Uranium-Aerosol Generation under Fire ». Processes 11, no 2 (30 janvier 2023) : 419. http://dx.doi.org/10.3390/pr11020419.

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Uranium aerosols are released from uranium-containing materials in high-temperature environments caused by nuclear accidents or other processes. Research on the generation characteristics of uranium aerosols under such conditions is an important part of nuclear-safety analysis. In this experiment, the similarity between metal cerium aerosols and uranium material aerosols was evaluated from the aspects of particle size distribution and source term. Combined with the experiment data, the effect of air flow rate and sampling time is discussed. The calculation result of the air release fraction (ARF) is 6.07 × 10−3–4.8 × 10−2, and the respirable fraction (RF) is 0.810–0.978, respectively, showing that the size distribution of particles and ARF of the cerium aerosol are different from the results of the uranium aerosols in the literature, while the RF is similar to the results obtained by using the uranium–niobium alloy in the literature.
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Bolton, H. Carrington. « XXVIII.-Index to the Literature of Uranium ». Annals of The Lyceum of Natural History of New York 9, no 1 (22 mai 2009) : 362–76. http://dx.doi.org/10.1111/j.1749-6632.1870.tb00202.x.

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Marks de Marques, Eduardo, et Raíssa Cardoso Amaral. « O percurso doloroso entre a prática e a teoria : reflexões sobre a personagem urania em “A festa do bode”, de Mario Vargas Llosa ». Anuário de Literatura 21, no 1 (30 juin 2016) : 32. http://dx.doi.org/10.5007/2175-7917.2016v21n1p32.

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http://dx.doi.org/10.5007/2175-7917.2016v21n1p32Este artigo irá apresentar reflexões sobre a personagem Urania do romance A Festa do Bode, publicado originalmente em 2000, pelo escritor peruano Mario Vargas Llosa. Para esta análise, utilizou-se o conceito de metaficção historiográfica, cunhado por Linda Hutcheon ([1998] 1991) para abordar a relação entre literatura e história no romance. No que concerne à análise da personagem Urania (foco primordial do artigo) será demonstrado o entrelaçamento de memória e trauma no eixo narrativo de Urania, já que a personagem passou por uma experiência traumática em um período limite da República Dominicana: a ditadura da Era Trujillo (1930-1961). No percurso entre a teoria e prática, isto é, a vivência histórica e o conhecimento histórico, eis que surge Urania e o poder de recriar ficcionalmente as consequências que a ditaduras podem deixar nos indivíduos. Além disso, é justamente no movimento entre teoria e prática que a reconstrução da identidade dominicana de Urania torna-se possível.
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Diac, Madalina, Anton Knieling, Simona Irina Damian, Diana Bulgaru Iliescu, Ion Sandu, Cristina Furnica, Catalin Jan Iov et Sofia David. « Forensic Aspects in Polonium-210 Poisoning ». Revista de Chimie 68, no 11 (15 décembre 2017) : 2646–49. http://dx.doi.org/10.37358/rc.17.11.5946.

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The human body is exposed to radiation resulting from the presence and degradation in the environment of natural radionuclides like uranium and thorium. In laboratories, several radioactive isotopes are being used: uranium-235, iodine-131, cobalt-60, and carbon-14. These radioactive isotopes are useful in scientific (dating human skeletal remains) and medical purposes (radiotherapy/radiodiagnosis), but they are also used in criminal context. Polonium 210 (Po-210) is a natural radioisotope occurring in the natural environment as consequence of uraniu-238 decay chain. The current paper presents a less known subject of lethal poisoning with Po-210 radioisotope, in order to underline the methods used for Po-210 identification in forensic samples. The authors performed a literature review of the scientific researchers published in the last years concerning polonium sources and its use as a poison. Polonium�s effectiveness as a poison relies on its chemical characteristics only to the extent that they determine the isotope�s distribution and retention in organs and tissues; the alpha particles are responsible for the lethal effect. Po-210 poisoning is particular, as it doesn�t leave traces, it can be easily transported, and is not detected by airport scanners. Identifying this compound during a medico-legal autopsy is very difficult, as the post-mortem examination will not yield characteristic aspects, the forensic pathologist being forced to consider this as a potential cause of a rapid death, with significant visceral damage.
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Bryce, Judith, Giulia Bigolina et Valeria Finucci. « Urania ». Modern Language Review 99, no 3 (juillet 2004) : 801. http://dx.doi.org/10.2307/3739064.

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Fisenne, I. M., P. M. Perry et N. H. Harley. « Uranium in Humans ». Radiation Protection Dosimetry 24, no 1-4 (1 août 1988) : 127–31. http://dx.doi.org/10.1093/oxfordjournals.rpd.a080256.

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Abstract Measurements of the environmental and metabolic behaviour of the naturally occurring radionuclides have provided necessary information on the behaviour of stable elements and have been useful analogues in the study of man-made radionuclides. Uranium has been studied primarily because of its role in the nuclear industry and its possible effects as a heavy metal in occupational exposure cases. There is abundant literature dealing with uranium studies in animals, and some literature on human studies with chronically ill patients. Relatively few data are available which document the uranium concentrations in humans under chronic, low level environmental conditions. Some recent bone measurements performed at the US Department of Energy, Environmental Measurements Laboratory are presented. For comparison, a summary of published information on uranium concentrations in blood, soft tissues and bones of humans is also presented. These data are selected to eliminate results from areas of known elevated natural radionuclide levels and occupational or controlled experimental exposure cases. From the measurements of the uranium concentration in bone from 12 countries, it is possible to derive a cumulative frequency distribution for the sampled populations.
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Driver, Sam, et Iosif Brodskiǐ. « Uraniia ». World Literature Today 62, no 2 (1988) : 298. http://dx.doi.org/10.2307/40143680.

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Thèses sur le sujet "Uranian literature"

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Genieys, Severine Nathalie. « Picturing women in Urania by Mary Wroth and Clelie by Madeleine de Scudery ». Thesis, University of Glasgow, 2003. http://theses.gla.ac.uk/1075/.

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My parallel reading of two seventeenth-century romances by two women, one English, one French, aims to illumine the early modern mapping of womanhood from a female perspective. Part one examines the discourse of virtuous women in the patriarchal societies of Urania and Clélie. Adopting an approach based on close stylistic analysis, I explore, on the one hand, the extent to which the marriage topos endows or does not endow these women with speech and power, and on the other the extent to which the marriage topos enables the utterance of a protofeminist discourse. While the marriage topos initially allows us to visualise these women as daughters, sisters, mothers and wives, it gradually unveils women not only as the apologists of true love, but also as androgynous heroines in the male-authored domain of politics. Having discussed the discourse (mostly oral) of Uranian and Scuderian heroines in the context of a society functioning on the basis of political alliances, I move on to analyse ‘The loci of the feminine’, i.e. the configuration of female spaces in two texts. This analysis is developed in parts two and three of this thesis. The first part begins by examining the cultural milieux of Mary Wroth and Madeleine de Scudéry, and explores some of the evidence regarding the possible existence of an early modern English equivalent of French ‘salons’. This chapter measures the extent to which Urania and Clélie might be constructed as illustrations of the highly intense activities of Wroth’s and Scudéry’s literary circles. The next chapter focusses on the Uranian and Scuderian fictionalisation of a predominantly female community. Part three assesses the ways in which these texts seem to inscribe themselves within a protofeminist project of re-evaluating female legacy and authorship in the realm of letters, and proceeds to explore more specifically the representation of literary creativity in Urania’s and Clélie’s female retreats. My final part examines the subject of the thesis in its literal sense, by analysing Wroth’s and Scudéry’s representations of the female body, and relates- where appropriate- images of women in Urania and Clélie to those found in the visual arts of the early modern period, such as emblems, engravings, paintings and masques.
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Montgomery, Kaylor Layne. « A Woman Trapped : Representations of Female Sexual Agency in Early Modern Literature ». University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1523228037122741.

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Dolloff, Matthew K. 1966. « Mediating the muse : Milton and the metamorphoses of Urania ». Thesis, 2006. http://hdl.handle.net/2152/21916.

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In the grand invocation at the beginning of Book VII of his epic Paradise Lost, John Milton selects as his muse Urania, who is traditionally the Muse of Astronomy in classical texts. He immediately excludes that possible identification, however, when he writes that she is “Nor of the Muses nine.” By calling on her “meaning” rather than her “Name,” Milton relies on a multitude of precedents and traditions, repackaged for his own times and his own idiosyncratic purposes, that critics have consistently failed to recognize or investigate sufficiently. This dissertation looks diachronically at various occurrences of Uranian discourse in literature, historically both before and after Milton, to locate thematic similarities to his works and to help define his Urania accordingly. In spite of her explicit exclusion, the search begins with Urania as Muse of Astronomy because from her mythopoetic genesis in Ancient Greece, other myths are engrafted onto her, most notably Plato’s Uranian Aphrodite as defined in his Symposium. This transformed Urania appears in ancient and medieval cosmic journey and dream narratives and evolves by the Renaissance into an oddly Christianized muse. She becomes a vehicle for heavenly, divine truths that each devout Christian rightly senses in his conscience. In this capacity she promotes friendship and chastity, while she also opposes licentiousness, particularly the lusts of tyrants. In early myths, the Muses are victims of tyranny; but in later appearances, they often sell their patronage of the arts unscrupulously to wicked kings and the flattering poets who are paid by them. Urania’s patronage manages to distance itself from her sisters’ misallocations of inspiration, and parts of the Book VII invocation are clearly an indictment of royal excess. In conclusion, a small group of late-Victorian English poets, mainly from Oxford, call themselves the “Uranians.” Although they too draw from the same traditions as Milton and from Milton himself, they appropriate Urania to satisfy their own political and sexual agendas in a conscious and deliberate revision.
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Livres sur le sujet "Uranian literature"

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Lyn, Paleo, dir. Uranian worlds : A guide to alternative sexuality in science fiction, fantasy, and horror. 2e éd. Boston, Mass : G.K. Hall, 1990.

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Gardner, Martin. Urantia : The great cult mystery. Amherst, N.Y : Prometheus Books, 2008.

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Gardner, Martin. Urantia : The great cult mystery. Amherst, N.Y : Prometheus Books, 2008.

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Gardner, Martin. Urantia : The great cult mystery. Amherst, N.Y : Prometheus Books, 1995.

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Tiner, John Hudson. Uranium and plutonium make nuclear power. Sioux Falls, SD : Lake Street Publishers, 2003.

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Liguori, Alessia. La Venere Urania e la Venere Pandemia : Per un'estetica del comportamento. Roma : Aracne, 2006.

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National Defense Research Institute (U.S.) et United States. Dept. of Defense. Office of the Secretary of Defense., dir. A review of the scientific literature as it pertains to Gulf War illnesses. Santa Monica, CA : Rand, 2001.

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Jacobson, Miriam Emma. 1998 Brown University senior honors theses : Miriam Emma Jacobson (English), Jubin Meraj (Religious Studies), Dimitrios Mitsouras (Computer Science), Mary Jean Sia Uy (History). Providence, RI : Wayland Press, Brown University, 1998.

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Follett, Ken. Dreifach. Bergisch Gladbach : luebbe digital, 2009.

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Follett, Ken. Trójka. Warszawa : Amber, 1997.

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Chapitres de livres sur le sujet "Uranian literature"

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Tribunella, Eric L. « The Adult Tutor and the Young Uranian ». Dans Male Homosexuality in Children’s Literature, 1867–1918, 140–65. New York : Routledge, 2023. http://dx.doi.org/10.4324/9781003370529-6.

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Tribunella, Eric L. « New York City and the Proto-Uranian Street Boys of Alger's Ragged Dick Series ». Dans Male Homosexuality in Children’s Literature, 1867–1918, 39–64. New York : Routledge, 2023. http://dx.doi.org/10.4324/9781003370529-2.

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Tribunella, Eric L. « Suicide, Self-Sacrifice, and Uranian Schoolboys in Howard Sturgis's Tim and Horace Vachell's The Hill ». Dans Male Homosexuality in Children’s Literature, 1867–1918, 85–109. New York : Routledge, 2023. http://dx.doi.org/10.4324/9781003370529-4.

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Tribunella, Eric L. « Boys as Noble Uranians ». Dans Male Homosexuality in Children’s Literature, 1867–1918, 65–84. New York : Routledge, 2023. http://dx.doi.org/10.4324/9781003370529-3.

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Heuss, Hans Ludwig. « Pseudo-Dionysios Areopagites : Peri tes uranias hierarchias ». Dans Kindlers Literatur Lexikon (KLL), 1–2. Stuttgart : J.B. Metzler, 2020. http://dx.doi.org/10.1007/978-3-476-05728-0_16216-1.

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Schabio, Saskia. « Wroth, Lady Mary : The Countess of Montgomery's Urania ». Dans Kindlers Literatur Lexikon (KLL), 1–2. Stuttgart : J.B. Metzler, 2020. http://dx.doi.org/10.1007/978-3-476-05728-0_17446-1.

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Trull, Mary E. « Marriage and Private Lament in Mary Wroth’s Urania ». Dans Performing Privacy and Gender in Early Modern Literature, 112–44. London : Palgrave Macmillan UK, 2013. http://dx.doi.org/10.1057/9781137282996_5.

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Werth, Tiffany Jo. « Taking the Cure : Mineral Waters and Love’s Folly in Lady Mary Wroth’s The Countess of Montgomery’s Urania ». Dans Early Modern Literature in History, 31–51. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66568-5_3.

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Mihok, Steve, et Malcolm McKee. « Practicalities of Mainstreaming Biomarker Use – A Canadian Perspective ». Dans NATO Science for Peace and Security Series A : Chemistry and Biology, 303–24. Dordrecht : Springer Netherlands, 2022. http://dx.doi.org/10.1007/978-94-024-2101-9_18.

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AbstractThis paper discusses the use of biomarkers within the environmental protection framework that has evolved since the Canadian Nuclear Safety Commission (CNSC) was given a broad mandate for the protection of the environment under the Nuclear Safety and Control Act (NSCA) in 2000. Unique insights have been obtained through environmental assessments for major nuclear projects conducted under the Canadian Environmental Assessment Act, and through the Environmental Effects Monitoring (EEM) requirements at uranium mines and mills (Metal Mining Effluent Regulations under the Fisheries Act (FA)). Altogether, the Canadian nuclear sector now has 17 years of experience in applying biological evidence in decision-making. Key examples are discussed where improved effluent controls were implemented at uranium mines for three substances (U, Mo, Se) based on risk assessments and supporting biological evidence. In the case of U, potential for localized harm from the chemical toxicity rather than radiological toxicity of U was identified at three older mines through environmental risk assessment. Evidence of potential harm in the field was also obtained from a community ecology bioindicator (benthic invertebrate biodiversity). This led to the improvement of effluent controls for U that were straightforward to implement under the NSCA. In the case of Mo, the weight of evidence for potential health effects on moose and other riparian wildlife from ecological risk assessments (supported by field evidence from Sweden) prompted improved controls based on precaution and pollution prevention. A technological solution was readily available for reducing Mo in effluent and was therefore implemented. In the case of Se, population level effects in fish and individual level effects in waterfowl in the USA led to selenium risks being evaluated downstream of uranium mines. Biomarkers (larval teratogenic deformities) played a pivotal role in attributing observed effects (harm) to the probable cause (selenium accumulation in the environment). However, as technological solutions were not straightforward, effort was required to build a consensus on achievable effluent control targets in a multi-stakeholder and multi-jurisdictional context. Through site-specific research and the latest scientific literature, criteria for selenium risk evaluation and water treatment system improvements were agreed upon and implemented. Within the EEM program, similar issues have arisen in managing a robust and defensible regulatory framework for controls on multiple hazardous substances across many mining sectors. However, an initial review of biomarkers resulted in the selection of only ecologically-relevant parameters (fish health and population indicators, benthic invertebrate biodiversity) as triggers for regulatory action. Altogether, these and other parallel experiences are discussed in terms of the desirable attributes of biological effects monitoring in a Canadian regulatory context.
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Sambo, Pamela Towela. « An African Legal, Cultural and Religious Perspective of Sustainable Soil Governance ». Dans International Yearbook of Soil Law and Policy 2022, 305–31. Cham : Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-40609-6_13.

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AbstractThis chapter adopts a desktop review of diverse literature to understand the legal, cultural and religious underpinning of sustainable soil governance in Africa. The role of traditional knowledge systems in achieving sustainable soil governance in Africa will also be evaluated. The African Union recognises five geographic regions on the continent namely, North, South, West, East and Central. A sixth region consisting of people of African descent living outside the continent is also categorized but it is not materially relevant for the present analysis. The countries highlighted in this chapter are only used representatively of the entire continent to the extent possible. Africa is a large continent with diverse traditions, cultures and religions upon which the legal systems responsible for natural resources and environmental protection are anchored. It is therefore impossible to discuss any issue pertinent to the continent with homogeneity. Africa is no doubt one of the most resource-abundant continents. Natural resources such as gold, diamond, oil, natural gas, copper, uranium, among others are mined in different parts of the continent. Almost every country in Africa has a deposit of natural resources because the continent is endowed with about 97% of the world’s chromium, 90% of the world’s cobalt, 85% of the word’s platinum, 70% of the world’s cocoa, and 60% of the world’s coffee. Despite this abundance of natural resources, Africa is also among the poorest continents. One of the factors that has led to the continent’s extreme poverty levels is that the extraction of land or soil based natural resources is minimally utilised to the benefit of the African countries themselves. The process of natural resources extraction causes immense damage primarily to land and soil as well as the general environment. Against this background, this chapter assesses how culture, traditional norms and religion have shaped sustainable soil governance in Africa.
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Actes de conférences sur le sujet "Uranian literature"

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Moussa Hassane, Ayouba, Wang Qingyu, Mohammed Ado et Doctor Enivweru. « Molecular Dynamics Simulation of Thermal Conductivity of Uranium Mononitride ». Dans ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-68913.

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Abstract The underline challenge of low thermal conductivity which is responsible for high centerline temperature in Uranium-dioxide (UO2) nuclear plant fuel type associated with the current generation of commercial reactors remains a huge concern to the nuclear power industry. Although, researchers in the nuclear industry have proposed uranium mononitride (UN) as a promising candidate for accident tolerant fuel and Generation-IV nuclear reactor fuels, unfortunately, there is still a lack of clear understanding of the point defects influence on the thermal conductivity of UN. This paper applies the reverse-NEMD method to study the effect of point defects on phonon thermal conductivity in UN perfect crystal. Experimental and simulation relevant literatures were reviewed to analyze the influence of defects on the phonon thermal conductivity of UN. The thermal conductivity of uranium mononitride increases quickly with the temperature and the phonon contribution decreases with an increase in vacancies concentration. Uranium vacancy has a detrimental effect on the phonon thermal conductivity of UN at lower vacancy concentration. Results from this research would help with the understanding and application of UN in nuclear engineering.
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Puig, Francesc, Javier Dies, Manuel Sevilla, Joan de Pablo, Juan Jose´ Pueyo, Lourdes Miralles et Aurora Marti´nez-Esparza. « Selection and Evaluation of Inner Material Canididates for Spanish Highlevel Radioactive Waste Canisters ». Dans The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7178.

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This paper summarizes the work carried out to analyse different alternatives related to the inner material selection of the Spanish high level waste canister for long term storage. The preliminary repository design considers granitic or clay formations, compacted bentonite sealing, corrosion allowing steel canisters and glass bead filling between the fuel assemblies and canister walls. This filling material will have the primary role of avoiding the possibility of a criticality event, which becomes an issue of major importance once the container is finally breached by corrosion and flooded by groundwater. In the first place, a complete set of requirements have been devised as evaluation criteria for candidate materials examination and selection; resulting in a compilation of demands significantly deeper and more exhaustive than any other similar work found in literature, including over 20 requirements and some other general aspects that could involve improvements in repository performance. Secondly, eight materials or material families (cast iron or steel, borosilicate glass, spinel, depleted uranium, dehydrated zeolites, hematite, phosphates and olivine) have been chosen and examined in detail, extracting some relevant conclusions. Either cast iron, borosilicate glass, spinel or depleted uranium are considered to look quite promising for the mentioned purpose.
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Rakhshan Pouri, Samaneh, et Supathorn Phongikaroon. « Graphical User Interface With Reverse-Engineering of the Cyclic Voltammetry Method for Electrochemical Processes of Used Nuclear Fuel ». Dans 2016 24th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icone24-60439.

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This work focuses on an interactive reverse-engineering program design for the cyclic voltammetry (CV) method to help elucidating, improving, and providing robustness in detection analysis in the absence of complete experimental data sets during an electrorefining process of used nuclear fuel reprocessing. The work has been implemented into a Graphical User Interface (GUI) of the commercial software MATLAB allowing an individual user to directly control and make adjustments to support material detection and accountability. Analyzing and reconstructing the CV plots for uranium (U) in a LiCl-KCl molten salt at 500°C under different scan rates and at 1, 2.5, 5, 7.5, and 10 wt% have been accomplished. These test values provide the current (amp) versus potential (V) and concentration of each species (mol/cm3) versus the operating time (s) graphs under different specified conditions. The computational code uses the electrochemical fundamentals coupling with various experimental values existing in the literature such as the diffusion coefficients, formal potentials, reversible/irreversible time duration for reverse engineering of the CV technique. The user needs to specify only the desired concentration of uranium and the scan rate. All other experimental data sets for each condition have been stored in the code and can be used to interpolate between the existence data. The developed routine can be used to detect the peaks at the reversible and irreversible parts despite deficiencies of experimental data in a very short run time (around one minute) with an adequate selected time interval of approximately 0.08 second. Results indicate that the model can trace the current versus potential graph with a low root-meant-square (RMS) error compared to the experimental reported in literature. The concentration of each species at the reversible and irreversible of anodic and cathodic sides can be calculated and are shown based on increasing time which provided a good view of the whole process.
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Shah, V. N., K. Natesan et C. A. Greene. « Material Degradation in ACR-700 Fuel Channel Components ». Dans ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93656.

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The ACR (Advanced CANDU Reactor)-700 shares many design features with operating CANDU (CANada Deuterium Uranium) reactors, such as horizontal pressure tubes, heavy water moderator, and on-line fueling. However, there are some departures from the operating reactors that could affect the performance of structural materials. These include use of light water coolant, higher coolant pressure and temperature, enriched fuel rather than natural uranium, and higher fuel burnup. More important, the ACR-700 has many design features that set it apart from conventional and evolutionary light water reactors. This paper reviews the available literature related to design and structural materials for ACR-700 fuel channel components (Zr-2.5Nb pressure tubes, calandria tubes, annular spacers, and end fittings). The objectives were to identify the potential degradation mechanisms, evaluate the main degradation mechanism causing field failures, and analyze the available data to assess the performance of various components over the design/service life of the ACR-700. The review concludes that delayed hydride cracking (DHC) has been a primary degradation mechanism causing failure of CANDU pressure tubes. The influence of light water coolant environment on DHC initiation in the ACR 700 needs evaluation. The main concern is the potential for generation of hydrogen due to corrosion of the pressure tubes and its ingress into them, thereby making the tubes susceptible to DHC.
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Xia, Bing, et Fu Li. « Preliminary Study on the Feasibility of Utilizing the Thermal Fissile Breeding Capability of the Th-U Fuel Cycle in HTR-PM ». Dans 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16460.

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HTR-PM is a demonstration plant of the modular high temperature reactor with two pebble-bed cores of 250 MWth. Since the early HTRs, such as AVR and THTR in Germany, thorium-based fuel has been regarded as an important fueling option. In this work, the feasibility of maximizing thorium utilization and minimizing the refueling effort of uranium fissile under the framework of HTR-PM is investigated. The preliminary neutronics features of the Th-233U fuel cycle in the equilibrium state of the HTR-PM are analyzed. Two types of fuel loading schemes are considered: the ThU-MOX scheme, namely the so-called “ThOX” fuel in literatures, and the SEP scheme, which means “separate” fuel pebbles loaded with thorium oxide and uranium oxide, respectively. The ThU-MOX scheme utilizes the mixed Th+HEU oxide fuel particles in all the fuel pebbles in the core, in which the enrichment of HEU is 93%. The SEP scheme utilizes the separate thorium pebbles and LEU pebbles mixed homogeneously in the core. The preliminary results on the ThU-MOX scheme indicate that thorium mixed with HEU in the fuel particle can lower the 235U loading requirement per energy generated, compared with the normal LEU loading scheme of the HTR-PM, and enhance the safety performance for high heavy metal loading cases. On the other hand, the results of SEP scheme reveal that the self shielding effect of the thorium particles depresses the absorption of thorium and the utilization of 233U. However, the situation can be improved by lengthening the residence time of the thorium pebbles. Furthermore, more realistic features are investigated as the basis of future works, including the initial core and the running-in phase, the impact of control poisons.
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Lang, Xuemei, Houjun Gong, Lei Zhou, Feng Xie et Ye Liu. « Experimental Studies on Critical Heat Flux in Tight Lattice Rod Bundles ». Dans 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30915.

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The tight fuel lattice of pressurized water reactors (PWR) is helped to reduce the volume ratio of water-uranium, to increase the conversion ratio, to decrease the volume of core. It is especially useful for very high burnup and high volume power flux. The design of tight-lattice pressurized water reactors requires the knowledge of critical heat flux (CHF) in tight rod bundles. The tight hexagonal 19-rod bundles is used in this test. There are 4 wires wrapped in outside wall of each rod to support and locate. Experimental investigations on CHF behavior in the two kind bundles of helix angle 3° and 5° were performed. The CHF data points have been obtained in a range of parameters: pressure 8.0–16.6 MPa, mass flux 164.6–3283.0 kg/m2s and bundle exit steam quality −0.315 to 0.747. It is found that the CHF value of helix angle 5° bundle was more higher than that of helix angle 3° bundle in the same T/H condition. The effect of different parameters on CHF in the tight rod bundle is similar to that in the open literature. The CHF correlations of helix angle 5° bundle was obtained based on the test data.
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Hernandez, Susan D., et Mary E. Clark. « Building Capacity and Public Involvement Among Native American Communities ». Dans ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1251.

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Abstract The United States Environmental Protection Agency (U.S. EPA) supports a number of local community initiatives to encourage public involvement in decisions regarding environmental waste management and remediation. Native American tribal communities, in most cases, operate as sovereign nations, and thus have jurisdiction over environmental management on their lands. This paper provides examples of initiatives addressing Native American concerns about past radioactive waste management practices — one addresses uranium mining wastes in the Western United States and the other, environmental contamination in Alaska. These two projects involve the community in radioactive waste management decision-making by encouraging them to articulate their concerns and observations; soliciting their recommended solutions; and facilitating leadership within the community by involving local tribal governments, individuals, scientists and educators in the project. Frequently, a community organization, such as a local college or Native American organization, is selected to manage the project due to their cultural knowledge and acceptance within the community. It should be noted that U.S. EPA, consistent with Federal requirements, respects Indian tribal self-government and supports tribal sovereignty and self-determination. For this reason, in the projects and initiatives described in the presentation, the U.S. EPA is involved at the behest and approval of Native American tribal governments and community organizations. Objectives of the activities described in this presentation are to equip Native American communities with the skills and resources to assess and resolve environmental problems on their lands. Some of the key outcomes of these projects include: • Training teachers of Navajo Indian students to provide lessons about radiation and uranium mining in their communities. Teachers will use problem-based education, which allows students to connect the subject of learning with real-world issues and concerns of their community. Teachers are encouraged to utilize members of the community and to conduct field trips to make the material as relevant to the students. • Creating an interactive database that combines scientific and technical data from peer-reviewed literature along with complementary Native American community environmental observations. • Developing educational materials that meet the national science standards for education and also incorporate Native American culture, language, and history. The use of both Native American and Western (Euro-American) educational concepts serve to reinforce learning and support cultural identity. The two projects adopt approaches that are tailored to encourage the participation of, and leadership from, Native American communities to guide environmental waste management and remediation on their lands. These initiatives are consistent with the government-to-government relationship between Native American tribes and the U.S. government and support the principle that tribes are empowered to exercise their own decision-making authority with respect to their lands.
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Amabili, Marco, Prabakaran Balasubramanian, Giovanni Ferrari, Stanislas Le Guisquet, Kostas Karazis, Brian Painter et Lorenzo Piccagli. « Identification of Non-Linear Vibration Parameters of a Nuclear Fuel Rod ». Dans ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-86212.

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In Pressurized Water Reactors (PWR), fuel assemblies are composed of fuel rods, long slender tubes filled with uranium pellets, bundled together using spacer grids. These structures are subjected to fluid-structure interactions, due to the flowing coolant surrounding the fuel assemblies inside the core, coupled with large-amplitude vibrations in case of external seismic excitation. Therefore, understanding the non-linear response of the structure and, particularly, its dissipation, is of paramount importance for the choice of safety margins. To model the nonlinear dynamic response of fuel rods, the identification of nonlinear stiffness and damping parameters is required. The case of a single fuel rod with clamped-clamped boundary conditions was investigated by applying harmonic excitation at various force levels. Different configurations were implemented testing the fuel rod in air and in still water; the effect of metal pellets simulating nuclear fuel pellets inside the rods was also recorded. Non-linear parameters were extracted from some of the experimental response curves by means of a numerical tool based on the harmonic balance method. The axisymmetric geometry of fuel rods resulted in the presence of a one-to-one internal resonance phenomenon, which has to be taken into account modifying accordingly the numerical identification tool. The internal motion of fuel pellets is a cause of friction and impacts, complicating further the linear and non-linear dynamic behavior of the system. An increase of the equivalent viscous-based modal damping with excitation amplitude is often shown during geometrically non-linear vibrations, thus confirming previous experimental findings in the literature.
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Rapports d'organisations sur le sujet "Uranian literature"

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Nunez, L., et G. F. Vandegrift. Evaluation of hydroxamic acid in uranium extraction process : literature review. Office of Scientific and Technical Information (OSTI), mai 2001. http://dx.doi.org/10.2172/782579.

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Haas, P. A. Literature information applicable to the reaction of uranium oxides with chlorine to prepare uranium tetrachloride. Office of Scientific and Technical Information (OSTI), février 1992. http://dx.doi.org/10.2172/5837046.

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Haas, P. A. Literature information applicable to the reaction of uranium oxides with chlorine to prepare uranium tetrachloride. Office of Scientific and Technical Information (OSTI), février 1992. http://dx.doi.org/10.2172/10127689.

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Hossner, L. R., R. H. Loeppert, R. J. Newton et P. J. Szaniszlo. Literature review : Phytoaccumulation of chromium, uranium, and plutonium in plant systems. Office of Scientific and Technical Information (OSTI), mai 1998. http://dx.doi.org/10.2172/604402.

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Norman, R. E. Uranium production in Eastern Europe and its environmental impact : A literature survey. Office of Scientific and Technical Information (OSTI), avril 1993. http://dx.doi.org/10.2172/10144010.

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None, None. Literature Review of Documented Persistent Secondary Uranium Sources at DOE LM Sites. Office of Scientific and Technical Information (OSTI), décembre 2020. http://dx.doi.org/10.2172/1808661.

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Author, Not Given. Uranium-Bearing Evaporite Mineralization Influencing Plume Persistence. Literature Review and DOE-LM Site Surveys. Office of Scientific and Technical Information (OSTI), mai 2016. http://dx.doi.org/10.2172/1253763.

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BYRNES ME. LITERATURE SURVEY FOR GROUNDWATER TREATMENT OPTIONS FOR NITRATE IODINE-129 AND URANIUM 200-ZP-1 OPERABLE UNIT HANFORD SITE. Office of Scientific and Technical Information (OSTI), juin 2008. http://dx.doi.org/10.2172/934379.

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Li, D., et D. Kaplan. LITERATURE REVIEW ON THE SORPTION OF PLUTONIUM, URANIUM, NEPTUNIUM, AMERICIUM AND TECHNETIUM TO CORROSION PRODUCTS ON WASTE TANK LINERS. Office of Scientific and Technical Information (OSTI), février 2012. http://dx.doi.org/10.2172/1036007.

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