Tesis sobre el tema "Bombe A"
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Lock, Peter. "Iran - Die unaufhaltsame Bombe". Universität Potsdam, 2006. http://opus.kobv.de/ubp/volltexte/2006/979/.
Texto completoCourmont, Barthélémy. "Pourquoi Hiroshima? : la décision d'utiliser la bombe atomique /". Paris : L' Harmattan, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016718784&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Texto completoDeloffre, Renaud. "La bombe a neutrons : evaluation et implications strategiques". Lille 2, 1988. http://www.theses.fr/1988LIL20012.
Texto completoThe enhanced radiation weapon, more commonly known as the neutron bomb, is at the root of a disturbing paradox that is of the utmost importance for the security of europe. It is a weapon that would enable nato to cancel out the massive superiority of the conventional forces maintained in europe by the warsaw pact countries, but nato has still not deployed it, although its technology has been mastered for over a quarter of a century. The united states and west germany have prevented its deployment, while france, which does not rule out the possibility of acquiring it in limited quantities, categorically dismisses any idea of setting up a real neutron defence system based on a significant number of such weapons. Rejection of the neutron bomb by these three countries is completely in keeping with the strategic policies they have pursued for over twenty-five years. It is in line with the policy of creating a nuclear-free europe that has characterized american strategy since 1960 and is evidence of the german leaders' determination to delay and restrict as far as possible any use of nuclear weapons on their territory. It illustrates, lastly, how concerned france is to refuse to take any part in a battle on european soil and to hold the bulk of its military ressources in reserve for dissuasive manoeuvres (. . . )
Deloffre, Renaud. "La Bombe à neutrons évaluation et implications stratégiques /". Lille 3 : ANRT, 1989. http://catalogue.bnf.fr/ark:/12148/cb376131268.
Texto completoBendjebbar, André. "La bombe atomique et deux Républiques, 1939-1969". Paris, Institut d'études politiques, 2000. http://www.theses.fr/2000IEPP0039.
Texto completoSchlegel, Sebastian. "Der "Weisse Archipel" : sowjetische Atomstädte 1945-1991 /". Stuttgart : Ibidem, 2006. http://catalogue.bnf.fr/ark:/12148/cb41350908d.
Texto completoSimon, Christine. "La politique de défense nucléaire de la France depuis le départ du Général de Gaulle : 1969-1990". Aix-Marseille 3, 1991. http://www.theses.fr/1991AIX32023.
Texto completoThe nuclear defence policy of france after the departure of general de gaulle has not come under great disorders but some modifications. These have affected the nuclear doctrine, the french position on the disarmament and the aprt of france in the defense of europe
Zani, Flavia <1988>. "Dalle esplosioni al palcoscenico. Le influenze delle bombe atomiche nel teatro giapponese". Master's Degree Thesis, Università Ca' Foscari Venezia, 2015. http://hdl.handle.net/10579/6738.
Texto completoCourmont, Barthélémy. "L'utilisation de la bombe atomique à Hiroshima : éléments de décision et alternatives". Paris 7, 2005. http://www.theses.fr/2005PA070005.
Texto completoSixty years after the first use of the atomic bomb, the reference of Hiroshima remains a symbol of the destruction of life, and the science to serve human barbarian purpose. The paradox of the Japanese city is that it both represents the end of an era and the beginning of another one. Some celebrate Hiroshima as the event that ended the most terrible war in human history. Others consider that the power of the new weapon will lead -the humanity to its own destruction. The bomb used on August 6, 1945, known as “Little Boy”, is then both considered as a peace weapon and the most powerful and efficient killing tool ever produced. This PhD thesis analyses the different elements that justified the use of the supreme weapon, the proposed alternatives, and the geopolitical context in which this foreign policy and, to some extent domestic politics, choice was made. The debates that took place before the use, the diplomatic manoeuvres from both Tokyo and Moscow are developed here, as well as the reasons that justified the choice of the atomic bomb among the different proposals, and the consequences for world history. One of the objectives is to determine whether this weapon, which was useless in ending the war against Japan, could not having been used by the US
Gayrard, Emeline. "Analyse bayésienne de la gerbe d'éclats provoquée pa l'explosion d'une bombe à fragmentation naturelle". Thesis, Université Clermont Auvergne (2017-2020), 2019. http://www.theses.fr/2019CLFAC039/document.
Texto completoDuring this thesis, a method of statistical analysis on sheaf of bomb fragments, in particular on their masses, has been developed. Three samples of incomplete experimental data and a mechanical model which simulate the explosion of a ring were availables. First, a statistical model based on the mechanical model has been designed, to generate data similar to those of an experience. Then, the distribution of the masses has been studied. The classical methods of analysis being not accurate enough, a new method has been developed. It consists in representing the mass by a random variable built from a basis of chaos polynomials. This method gives good results however it doesn't allow to take into account the link between slivers. Therefore, we decided to model the masses by a stochastic process, and not a random variable. The range of fragments, which depends of the masses, has also been modeled by a process. Last, a sensibility analysis has been carried out on this range with Sobol indices. Since these indices are applied to random variables, it was necessary to adapt them to stochastic process in a way that take into account the links between the fragments. In the last part, it is shown how the results of this analysis could be improved. Specifically, the indices presented in the last part are adapted to dependent variables and therefore, they could be suitable to processes with non independent increases
Haas, Hagen. ""Denn die Bombe, wann sie fällt ..." : zum Schicksal von Einwohnern belagerter Städte im absolutistischen Zeitalter". Universität Potsdam, 2003. http://opus.kobv.de/ubp/volltexte/2009/2816/.
Texto completoBalestrieri, Fulvia <1988>. "Après la bombe atomique : l’image du physicien dans la littérature européenne. Domaines italien, français, anglais". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7371/1/Balestrieri_Fulvia_Tesi.pdf.
Texto completoIn August 1945 two atomic bombs, built by the scientists and technicians of the Manhattan Project, destroyed Hiroshima and Nagasaki. The following thesis explores the changes in the literary image of the scientist after the bombardment of the two Japanese cities. In order to investigate the figure of the scientist in the contemporary imagery, this work focuses on the analysis of the fictional reworking of real physicists. The objects of this research are the fictional namesakes of a pantheon of scholars such as Einstein, Majorana, Oppenheimer, Meitner, Heisenberg, Bohr, and Fermi. About thirty Italian, French and English narrative and theatrical works are examined from narrating, dramaturgical, ethical and symbolic perspectives. Referring to Eric Hobsbawm’s remarks, this thesis advances the conflicting perception which concerns our idea of the science. The turning point in the scientist’s image is not definite and its climax is the collective vision of the science. The figurative representations of this mechanism are the chain reaction and the atomic explosion, whose effects are collective, even cosmic.
L’elaborato si prefigge l’obiettivo di analizzare come sia cambiata l’immagine letteraria dello scienziato a seguito della distruzione di Hiroshima e Nagasaki, rase al suolo nel mese di agosto 1945 da due bombe atomiche, frutto della ricerca degli scienziati e dei tecnici del Progetto Manhattan. Con l’obiettivo di indagare la figura dello scienziato nell’immaginario contemporaneo, il nostro lavoro si sofferma sulla trasposizione in finzione di alcuni fisici. Gli omonimi fittivi di un pantheon di scienziati – tra cui Einstein, Majorana, Oppenheimer, Meitner, Heisenberg, Bohr e Fermi – sono quindi al centro di questa ricerca. L’esame di circa trenta opere narrative e teatrali italiane, francesi e inglesi, è compiuto secondo le seguenti prospettive: narratologica e drammatologica, etica, simbolica. La tesi avvalora le osservazioni di Eric Hobsbawm, che ritiene che la scienza sia ormai oggetto di un duplice sentimento. L’immagine dello scienziato non risulta essere molto distante da quella anteriore agli eventi del 1945. È emerso, tuttavia, un rilevante cambiamento consistente nel passaggio ad una visione collettiva della scienza. Le rappresentazioni figurative di questa nuova dimensione sono proprio la reazione a catena e l’esplosione atomica, con effetti che si ripercuotono a livello collettivo, persino cosmico.
NDiaye, Pap. "Du nylon et des bombes : les ingénieurs chimistes de Du Pont de Nemours, le marché de l'état, 1910-1960". Paris, EHESS, 1996. http://www.theses.fr/1996EHES0056.
Texto completoThis dissertation focuses on the relationship between a large-scale firm, du pont de nemours, and the federal state in the u. S. , from the 1910s to the 1950s. Rather than a purely institutional or economic analysis, ces relationship are analyzed thru the history of a group of chemical engineers. These engineers developed nylon in the 1930s and plutonium for atomic bombs in the 1940s and later. In so doing, they changed their firm, by securing close connections with the state while meeting the demand from civilian consumers, eager to get nylons. Three levels of analysis are interwoven: the microhistorical level (a professional group and its technical work); an intermediate level, that of the organization, and its political and technical culture; and that of the american political economy and the emergence of the expert as the central political paragigm of post world war 2 america. These levels of analysis are connected to one another by the history of our chemical engineers' careers. By being at the crossroads of several marketsm they had strategic positions in the firm, which boosted their careers to the very top of corporate america
Braw, Monica. "The atomic bomb suppressed : American censorship in Japan, 1945-1949 /". Malmö : Liber Förlag, 1986. http://catalogue.bnf.fr/ark:/12148/cb357336050.
Texto completoSartini, Antonio. ""Bombe d'acqua" ed eventi estremi: integrazione di metodi tradizionali con tecniche GIS in un piccolo bacino pedecollinare". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8437/.
Texto completoDemers, Marc. "La perception de la menace nucléaire soviétique par l'Office of Reports & Estimates, 1946-1950 : pourquoi ont-ils raté la bombe?" Master's thesis, Université Laval, 2006. http://hdl.handle.net/20.500.11794/18148.
Texto completoFerber, Elena [Verfasser] y Martin J. [Gutachter] Müller. "Transkriptionelle, metabolische und physiologische Anpassung nach Selbstintoxikation mit reaktiven Sekundärstoffen: die Glukosinolat-Bombe in Arabidopsis thaliana / Elena Ferber ; Gutachter: Martin J. Müller". Würzburg : Universität Würzburg, 2019. http://d-nb.info/1193050618/34.
Texto completoBarat, Théodora. "Fοur Cοrners : désert fourmillant, zone sacrifice, objet de représentations". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMR121.
Texto completoThis research focuses on the footprint of uranium mining and nuclear military weaponry in the Four Corners area in the United States. Confronting museum narratives and field surveys, it aims to demonstrate how propaganda infuses the historical narrative and invisibilizes certain irradiated realities. It also examines nuclear power as a paroxysm of the techno-capitalist paradigm and as a reinvestment in the pioneer figure. It will also examine nuclear resurgences in other fields, such as Land Art and cinema. Finally, this study will show how the United States is an incubator of nuclear colonialism. In opposition to this colonial gaze, the desert will be presented not as an arid, sterile zone, but as a teeming ecosystem in order to consider a representation in resistance
Genay, Lucie. "La conquête scientifique du Nouveau-Mexique : héritage local du Projet Manhattan 1942-2015". Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAL017/document.
Texto completoOn November 16, 1942, in the New Mexican desert, J. Robert Oppenheimer suggested to his military counterpart, General Leslie Groves, that Ashley Pond's Los Alamos Ranch School would be an ideal location for the establishment of a secret laboratory to pursue research on the design and construction of the atomic bomb. This event sealed the fate of New Mexico, dubbed the “Land of Enchantment,” which acquired a new identity as the cradle of the nuclear age. The Los Alamos Laboratory paved the way to a third colonization of the area; a scientific conquest funded by the Federal Government and maintained by the arms race with the Soviet Union. Along the Rio Grande, the derivative installations of the Manhattan Project revolutionized the social, economic, and demographic order in the state while introducing environmental and cultural disruptions. And yet, seventy years later, New Mexico was still among the five poorest states in the nation despite its nuclear Eldorado. This thesis assesses the double-edged quality and the multiple facets of the Manhattan Project's legacy in New Mexico. By evaluating the durability and distribution of the benefits entailed by the nuclear industry in terms of jobs, education, and standards of living, this dissertation focuses on the question of the extent to which local populations actually gained from this high-technology revolution, and of the environmental, socio-economic price, which has been and will have to be paid for the nuclear bonanza. Since the settlement of the first atomic pioneers in Los Alamos, the native populations of New Mexico—be they Indian Pueblo dwellers, Hispanic villagers, or Anglo ranchers—have had to adapt to the ups and downs of the new order based on a dependence on federal funds that were, in turn, determined by global politics, and to face an increasingly harsh competition with outsiders, i.e. nuclear immigrants to the state. A combination of military and government power with secrecy built up the mechanism of a local military-industrial and scientific complex, which maintained the region's status as an internal colony of the United States. Since the 1980s, growing public awareness of environmental and health consequences of radioactivity have prompted antinuclear reactions in New Mexico. Thereupon, many previously unheard voices have spoken up to shed a new light on the nuclear heritage in the state. This local perspective of the humblest, forgotten participants in the advent of the nuclear age lacks historical recognition; therefore, the purpose of this dissertation is to address the relations between New Mexicans and the local nuclear industry
Alvarez, Ramos Charles Alonzo. "Cálculo de un sistema de bombeo para yogurt con una bomba de tornillo". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/9426.
Texto completoPublicación a texto completo no autorizada por el autor
Desarrolla los cálculos para la selección adecuada de una bomba sanitaria para el trasvase de yogurt, esto en base a las ecuaciones que gobiernan a los fluidos no newtonianos y con la ayuda de información determinada experimentalmente en laboratorio, de acuerdo a esto el yogurt es considerado un fluido no newtoniano. Para realizar la correcta selección de la bomba para trasvase de yogurt se deberá determinar correctamente los parámetros de caudal, atura dinámica total, potencia, velocidad de operación, etc. Esto nos permitirá seleccionar un equipo eficiente.
Trabajo de suficiencia profesional
Sabard, Jérémy. "Etude de l'explosion de mélanges diphasiques : hydrogène et poussières". Thesis, Orléans, 2013. http://www.theses.fr/2013ORLE2022.
Texto completoThe context of the study is the safety of the ITER installation. Indeed, studies have shown that it exists a risk for two-phase mixtures of hydrogen and dust can explode and create a safety risk for the ITER installation. This aims to obtain the fundamental data which characterize the explosion of these mixtures and to evaluate the pressure loads they can generate. To do so, experiments in spherical bomb have been carried out for hydrogen - oxygen - nitrogen mixtures at two initial temperatures (303 and 343 K) and pressures (50 and 100 kPa) for different hydrogen concentrations and different N2/O2 ratios. Explosion parameters like maximum combustion pressures (PMAX), deflagration indexes (KG or KST), combustion times (tC), fundamental flame speeds (SL°) and Markstein lengths have been determined. A kinetic modelling of the flame speed, using the COSILAB software was performed based on three detailed kinetic models available in the literature and allowed the calculation of the global activation energy on the basis of the kinetic model which showed the best agreement with the experimental data. Moreover equilibrium calculations were achieved to compare PMAX to the theoretical values. For two-phase mixtures, a new introduction device was tested and set up and experiments characterizing the explosions parameters of the two-phase mixtures have been performed in the spherical bomb. They were able to stress out the fact that, under some circumstances, dust explosion can be concomitant to a hydrogen explosion
Boureille, Patrick. "La marine française et le fait nucléaire (1945-1972)". Paris 4, 2008. http://www.theses.fr/2008PA040123.
Texto completoWith this paper, we study the effects of atomic revolution on the french navy between 1945 and 1972. Three era can be noticed. First, from 1945 until 1953, naval officiers understood the effects of a nuclear bombing on vessels, dockyards, harbours and seamen. Then, in a second time, with the help of the Atomic Energy Committee, in spite of the European community of defense (1954) and Europrean community of atomic energy (Euratom, 1956-1957), naval headquarters and central directorate of shipbuilding tried to achieve an atomic submarine which would have used natural uranium and heavy water (Q. 244). It is a technological failure. United States refused to sell a reactor or some enriched uranium for this submarine. Then, during the first part of the Fith republic, all the project is removed. A new project (Coelacanthe) appeared, based on a intermediate range ballistic missile which a nuclear powered submarine can launch against the cities of a potential enemy. The SNLE Le Redoutable began its first strategic patrol the 29th of january 1972. On the same time, from 1957, french navy supported the nuclear tests fields in the Sahara desert and polynesian islands
Courty, Léo. "Etude de l'émission et des propriétés de combustion des composés organiques volatils potentiellement impliqués dans les feux de forêts accélérés". Phd thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2012. https://theses.hal.science/docs/00/76/60/40/PDF/Manuscrit_Courty_final.pdf.
Texto completoMost of the vegetal species involved in forest fires produce and emit volatile organic compounds (VOCs). Physical forest fire propagation models do not take into account the combustion of these compounds and the objective of this study is to provide experimental and numerical data in order to better foresee and control fires. The emissions of five vegetal species have been analyzed for different temperatures using a flash pyrolysis apparatus: Thymus vulgaris, Rosmarinus officinalis, Lavandula stoechas, Cistus albidus and Pinus pinea. Laminar burning speeds, Markstein lengths and flame thicknesses of three major VOCs (-pinene, limonene and p-cymene) are determined using the spherical expanding flame technique. Numerical simulations are also performed with the PREMIX code of the CHEMKIN package for similar molecules. Several studies have shown that forest fires can behave in a surprising way, with a sudden increase of the rate of spread and of the released energy. This phenomenon is called accelerating forest fire. A thermochemical explanation, based on the ignition of a premixed VOCs/air mixture accumulated in a canyon, has been proposed. The different experimental data presented in this work can also be useful to study the validity of this approach. Other experimental and theoretical studies on the diffusion direction of VOCs and on their flammability limits are performed to investigate in detail this approach
Letterelli, Sara. "Louder than a bomb: quando le parole sono più forti di una bomba. Proposta di traduzione di testi scelti". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8932/.
Texto completoGinbar, Yuval. "Torture, terrorists and ticking bombs : moral, societal and legal aspects of the 'ticking bomb' justification for torture in the struggle against terrorism". Thesis, University of Essex, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433596.
Texto completoJarry, Maud. "La France, les Français et les armes de représailles allemandes V1-V2, 1943-1945". Paris, Institut d'études politiques, 2008. http://www.theses.fr/2008IEPP0012.
Texto completoThe A4 / V2 rocket and the Fi 103 / V1 flying bomb were developed at the end of 1942, at the time when the Allies began defeating the Axis Powers and when the RAF began to bombard Germany cities. These raids fed a desire for revenge against England, which these weapons made possible. From 1943 to 1945, because of the choice of the target and the range of the rockets, France and the French found themselves caught in the middle of the battle that the Germans and the Allies fought over the implementing of the V weapons. The French helped each side. They helped the Germans, whether under constraint or as volunteers, economically, socially and militarily, to build their launch ramps and to produce their weapons. On the other hand, other French fought on the side of the Allies to make the German plan fail. The French Resistance, in the front lines, informed secret services based in London, including the BCRA, providing information concerning the sites and the description of the arms. The sites were then bombarded by the RAF, which was supported by the USAAF and the FAFL. Although these attacks slowed the use of the V weapons, they also destroyed the surrounding countryside. After the D-Day, the Germans succeeded in firing their rockets. The French bases were then even more intensively bombed until the allied troops captured them at the end of the summer. Their inspection, carried out sometimes with French interested by this new technology, as well as the discovery of the rockets themselves, provided the technical basis of modern rocket science, which in turn led to the exploration of outer space
Courty, Léo. "Etude de l'émission et des propriétés de combustion des composés organiques volatils potentiellement impliqués dans les feux de forêts accélérés". Phd thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2012. http://tel.archives-ouvertes.fr/tel-00766040.
Texto completoGonçalves, Ana Cristina. "Representações de Hiroshima: a problemática da representação a partir de Gen Pés Descalços". Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/8/8157/tde-29052012-153648/.
Texto completoThe purpose of this paper is to reflect and understand how the representations about the horror are build, especially of Hiroshima, focusing on the violent event of the atomic bomb from the narrative of Nakazawa Keiji, Barefoot Gen, making links with other works that also represent catastrophe. To this end, a discussion was held about the possibility of writing and the horror of the catastrophe, the historical discourse and representations, the question of memory, history and writing, the dimensions of the building itself by its author, the political and ideological surroundings are part of the representations and, finally, the question of the possibility of the experience with the real.
Nakagawa, Cristiane Izumi. "Hiroshima: a catástrofe atômica e suas testemunhas". Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/47/47131/tde-06112014-155200/.
Texto completoThroughout the two World Wars, a disruption between humankind and the standards of conduct inaugurated by the Enlightenment was observed, legitimizing violence as something intrinsic to modern society. This change in values was followed by the increasing scientific and technological investment, which reached a high development during the twentieth century and brought, as one of its results, the greatest genocides carried out by the authoritarian States on behalf of their political and economic interests. The barbarism leads us to consider an element for reflection: the witnesses. They embody the need for redemption of humanization and the resumption of the moral values, both lost in the trivialization of violence. Thus, the testimony confronts history and shows that technological development is not a synonymous for human development. On the contrary, they allow us to question the true intent of the nations that, in their quest for domination, massively destroy entire populations. In this context, the following questions arise: what is the testimony and what is its importance to modern society? Historically, what had led to the appearance of witnesses? What is the historical context that provided the development of the atomic bomb? Why was there the need, by the nations at war, to exterminate thousands of people, mainly civilians? What is the consequence of breaking the rules of civility by the two World Wars? To answer these questions, the Hiroshima Peace Memorial Museum was investigated regarding its permanent exhibition, its goals regarding the struggle against forgetting the atomic disaster and the gathering of testimonies. After this first stage of the research, it was proceeded the study of the historical context that culminated in the atrocities committed during the two Great Wars, the results for modern society of the mass exterminations and finally, the study of trauma and testimony regarding the survivors of the Hiroshima atomic bombing
Giovaninni, Adriano. "Estudo dos riscos apresentados pelos radioisótopos após serem submetidos aos efeitos da detonação de um artefato explosivo". Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-23102012-143726/.
Texto completoThis job devotes to the study of the radioisotopes risks, after the effects of an explosion of an explosive device. This study developes data based on bibliographies, documents, calculation and also software, and as a result, could provide analysis of an explosive device blast with radioisotopes. The purpose of this work is to provide knowlegde about the potencial destructive result of a blast of an explosive called emulsion, made with ammonia nitrate, and also with cobalt properties, iodine and iridium of a explosive charge. To this emulsion were added activities of 1,5.102 TBq of Cobalt-60, 3,7.10-3 TBq of iodine-131 and 3,7 TBq of iridium-192. Such activities are seen in radioterapy, nuclear medicine and gamagraphy. It could consider the radioative plume progress from the blast epicenter, in order to analyse the value of the dose, the distribution and the distance from the epicenter of the radioisotope studied. The simulation of the radioative plume progress was made with calculation and computer software, such as Blast/FX Explosive effects analysis software and The Hotspot health physics Codes version 2.07.2. In this study was only possible to check the doses from the external effects, to consider the fact that all radioative material result in volatization. It´s important to say that we left for future studies the calculation of the internal doses and inside the lung, and also the doses of the radioative shrapnel from the blast.
Manenti, Sara <1991>. "La bomba atomica nell'arte". Master's Degree Thesis, Università Ca' Foscari Venezia, 2016. http://hdl.handle.net/10579/8916.
Texto completoSobrinho, Marcelo Barros. "A física e o projeto atômico alemães na Segunda Guerra Mundial". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/8/8138/tde-27092010-151704/.
Texto completoGermany started the 21st century at a privileged status in the world science community, what is proven in the amount of Nobel Prizes and discoveries carried out in the country, by Germans and foreigners who pursued their careers there. Such state of things could have changed after the end of World War I, when Germany´s weakness was evident, increased by the harsh conditions imposed by the Allies. Nevertheless, the period known as Weimar´s Republic faced a great production in various fields, including Physics, which kept its ascending trajectory. The National-Socialists seizure of power, in 1933, was responsible for a major involution of the German status in the world science scenario from the first year of their government, by means of dismissals, harassment and other actions. The start of World War II magnified this situation. Amidst all that, an Atomic Project began, aimed at building a mass destruction weapon of an almost unthinkable reach. The Project does not develop the weapon in time to be used during the war, but Germany develops a solid tradition in the fields of Nuclear Science and Technology.
Abbott, Laird. "INSTRUMENTATION OF OPERATIONAL BOMBER AIRCRAFT". International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607356.
Texto completoAirborne instrumentation used during flight tests is being installed and maintained in a unique way by operational bomber testers from the Air Force’s 53d Wing. The ability of the flight test community to test on operational aircraft has always been somewhat curtailed by the need for advanced forms of instrumentation. Operational fighter flight test squadrons have aircraft assigned to them, which they modify on as needed basis, much the same as developmental testers. However, bomber operational test units must use operational aircraft to accomplish their mission as there are no bombers in the Air Force’s Air Combat Command (ACC) specifically set aside for operational tests. During test missions, these units borrow aircraft from operational bomb wings, and then return them to service with the bomb wing after testing is complete. Yet, the requirement for instrumentation on these test missions is not much different than that of developmental testers. The weapon system engineer’s typically require Mil-Std-1553, video, telemetry, and Global Positioning System (GPS) Time-Space-Position-Information airborne receiver recordings. In addition, this data must be synchronized with an IRIG-B time code source, and recorded with the same precision as the data gathered during development test and evaluation (DT&E). As a result, several techniques have been developed, and instrumentation systems designed for these operational test units to incorporate instrumentation on operational aircraft. Several factors hamper the usual modification process in place at bases such as Edwards AFB and Eglin AFB. Primary among these is the requirement to maintain the aircraft in an operational configuration, and still meet all of the modification design safety criteria placed on the design team by the aircraft’s single manager. Secondary to the list of restrictions is modification time. Aircraft resources are stretched quite thin when one considers all of the bomb wing’s operational commitments. When they must release an aircraft for test missions, the testers must insure that schedule impacts are minimal. Therefore, these systems must install and de-install within one to two days and be completely portable. Placing holes in existing structures or adding new permanent structure is unacceptable. In addition, these aircraft must be capable of returning to combat ready status at any time. This paper centers on the B-52 bomber, and the active aircraft temporary modifications under control of the 49th Test Squadron (49 TESTS) at Barksdale AFB in Louisiana. The B-52 presents unique design challenges all its own, in addition to the general restrictions already mentioned. This paper will present the options that the 49 TESTS has successfully used to overcome the aforementioned restrictions, and provide an appropriate level of specialized instrumentation for its data collection requirements.
Oliver, Juan Sebastián. "Bombeo Central Termica Roca S.A". Bachelor's thesis, Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales, 2013. http://hdl.handle.net/11086/790.
Texto completoPresenta la selección de los equipos de bombeo y cañerías para el abastecimientop de agua a la central Termo Roca S:A: con el fin de incorporar un ciclo combinado en la generación de energía eléctrica. Esto producirá un aumento en la capacidad de generación de la planta de 126 MW a 180 MW
Bridges, Ashby H. "Estimating the radiation dose to emergency room personnel in an event of a radiological dispersal device explosion". Thesis, Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-08242006-142548/.
Texto completoDr. Armin J. Ansari, Committee Member ; Dr. Farzad Rahnema, Committee Member ; Dr. Rebecca Howell, Committee Member ; Dr. Nolan E. Hertel, Committee Chair.
Loula, André Lopes. "A “Associação Hibakusha Brasil pela Paz” e os sobreviventes de Hiroshima e Nagasaki no Brasil". Pontifícia Universidade Católica de São Paulo, 2017. https://tede2.pucsp.br/handle/handle/19970.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The objective of this work is to analyze the trajectory of the Association of the Victims of Atomic Bombs in Brazil, an institution founded in the city of São Paulo in 1984 - 39 years after the nuclear hecatomb of Hiroshima and Nagasaki. Through the analysis of the documentation contained in the collection of the Association and testimonies collected, the work gives visibility to the trajectory of people who survived the events that occurred in Hiroshima and Nagasaki, respectively, on August 6 and 9, 1945. The intention is to understand the role of this institution founded by survivors from the other side of the planet who contributed in Brazil for various reasons. Thus, it is intended to answer the following questions: what did they witness? How did they survive? How was the reconstruction of the city where they lived? Why did they immigrate to Brazil? Why the silence? This last inquiry looks to us for the conviviality with the trauma, one of the main dilemmas of the hibakushas (Japanese word for survivors of the bomb). Memory, the search for identity and the struggle to be recognized by the Japanese government as victims of this hecatomb are the main flags of the group of survivors. To this end, the hibakushas carry out various activities, such as lectures in schools and universities, in order to raise the awareness of younger generations about the risks of nuclear energy. We also tried to understand the events that preceded Hiroshima and Nagasaki. Analyzing the Meiji Era of 1868, modernizationof the land of the rising sun. The cultural change implemented in Japan. The imperialist race in the new world geopolitics, the United States, England, Germany, Japan, Russia, and France, all seeking to change their status quo in search of raw materials and consumers. All these characteristics will lead to 1st War and the 2nd War, which ends with nuclear weapons
O objetivo deste trabalho é analisar a trajetória da Associação da Vítimas das Bombas Atômicas no Brasil, instituição fundada na cidade de São Pauloem 1984 – 39 anos após a hecatombe nuclear de Hiroshima e Nagasaki. Por meio da análise da documentação contida no acervo da Associação e de depoimentos coletados, o trabalhodá visibilidade à trajetória de pessoas que sobreviveram aos eventos ocorridos em Hiroshima e Nagasaki, respectivamente, nos dias 06 e 09 de agosto de 1945. A intenção é entender qual o papel dessa instituição fundada por sobreviventes oriundos do outro lado do planeta que aportaram no Brasil por diversos motivos. Assim, pretende-se responder àsseguintes perguntas: o que presenciaram? Como sobreviveram? Como foi a reconstrução da cidade onde viviam? Por que imigraram para o Brasil? Por que o silêncio? Essa última indagação nos atenta para o convívio com o trauma, um dos principais dilemas dos hibakushas (palavra em japonês que designa os sobreviventes da bomba). A memória,a buscapela identidade e a luta para serem reconhecidos pelo governo japonês como vítimas dessa hecatombe são as principais bandeiras do grupo de sobreviventes. Para tanto, os hibakushas realizam diversas atividades, como palestras em escolas e universidades, a fim de conscientizar as gerações mais novas dos riscos da energia nuclear. Buscamos também entender os acontecimentos anteriores a Hiroshima e Nagasaki. Analisando a Era Meiji,iniciada em 1868, a modernização do país do sol nascente. A mudança cultural implementada no Japão. A corrida imperialista na nova geopolítica mundial. A busca dos Estados Unidos, Inglaterra, Alemanha, Japão, Rússia e França, por mudar seu statu quo, na tentativa de angariar matérias primas e consumidores. Todos esses acontecimentos que levaramàPrimeira Guerra e àSegunda Guerra, que se encerrou com os ataques nucleares
Reid, Aaron Livingston. "Ellerman bombs : explosive photospheric magnetic reconnection". Thesis, Queen's University Belfast, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728641.
Texto completoAnicama, Matos Víctor Manuel. "Simulación fluidodinámica de una bomba centrífuga". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2008. https://hdl.handle.net/20.500.12672/14075.
Texto completoRealiza la simulación fluidodinámica de una bomba centrífuga utilizando un programa de CFD comercial. Los resultados obtenidos por la simulación fueron comparados con resultados experimentales y teóricos. La simulación de la bomba centrífuga permitió una primera comparación de los resultados numéricos con los experimentales para la obtención en detalle de la curva característica H-Q de la bomba estudiada. Además, se realizó una segunda comparación de los resultados numéricos con los resultados teóricos para el caso de la velocidad absoluta (c2) y el ángulo β2 a la salida del impulsor. Las simulaciones numéricas se han llevado a cabo utilizando un programa basado en la solución de las ecuaciones de Navier-Stokes por medio de un algoritmo de volúmenes finitos, que define el flujo simultáneamente en el impulsor y voluta usando una técnica de mallado especial. La turbulencia se ha simulado por medio de un modelo k-e estándar. Además, las simulaciones fueron tridimensionales y en estado estacionario. La comparación de los resultados indica una gran aproximación de las simulaciones numéricas a la definición de los distintos fenómenos globales del funcionamiento de una bomba centrífuga. En concreto, el modelo tridimensional muestra resultados muy próximos a los experimentales en lo que se refiere a la altura dinámica total (ADT). A partir de los trabajos numérico y experimental realizados se ha llegado a una comprensión más clara de la fluidodinámica de una bomba centrífuga. Finalmente, se plantean posibles ampliaciones del trabajo abordables según se vaya aumentando la potencia de cálculo, así como desarrollando de nuevas metodologías de medida.
Trabajo de suficiencia profesional
Ortíz, Cerna Juan Carlos. "Selección de bomba centrifuga para caldero". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/10930.
Texto completoEl documento digital no refiere asesor
Manifiesta como aprender y reconocer las principales variables que intervienen en la selección de un equipo de bombeo, así como conocer las herramientas (programas) que ayudan a la selección de los equipos, también detalla las generalidades de la selección de electrobombas y como son utilizadas en los calderos. La mala elección del equipo puede derivar en cavitaciones, un exceso o insuficiente caudal a la caldera ocasionara un mal funcionamiento de esta. Al igual que si no calculamos la presión necesaria.
Trabajo de suficiencia profesional
Ângelo, Nara Elisa de Freitas Silva. "Amplificadores óticos híbridos de bomba única". Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/10270.
Texto completoO presente trabalho consiste num estudo preliminar sobre a possibilidade de desenvolvimento de um amplificador ótico híbrido, composto por um amplificador de fibra dopada com érbio e um amplificador de Raman em fibra, bombeado por uma única fonte, o que poderá potenciar eventuais reduções de custos, quando comparado com amplificadores híbridos equivalentes de duas bombas. Os amplificadores de fibra dopada com érbio e de Reman são caracterizados individualmente. Para o amplificador híbrido, são consideradas duas configurações distintas, com o amplificador de Raman a anteceder o estágio de amplificação na fibra dopada, e vice-versa, ambas com bombeamento copropagante a 1480 nm. A primeira configuração revela valores de ganho mais elevados, enquanto a segunda apresenta vantagens do ponto de vista de equalização do ganho e figura de ruído. A eventual aplicação destes amplificadores em sistemas de comunicações óticas é discutida.
This work is a preliminary study about the possibility of developing an optical Hybrid amplifier, composed of an erbium-doped fibre amplifier and a Raman fibre amplifier, pumped by a unique source, which may potentially reduce costs when compared to equivalent hybrid two-pumped amplifiers. Erbium doped fibre amplifiers and Raman amplifiers are individually described. For the hybrid amplifier, two different configurations are considered, one with the Raman amplifier preceding the amplification stage of the doped fibre and the other vice versa, both with a co propagating pumping of 1480 nm. The first configuration reveals higher gain values, whereas the second one presents some advantages from the points of view of gain equalization and noise figure. The possible use of these amplifiers in optical communications systems is discussed.
Stoffel, Diane. "Caractérisation du matériau Nd : Lu : CaF2 pour l'amplification laser à 1053 nm". Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0039/document.
Texto completoLaser facility such as the Megajoule Laser dedicated to laser-matter interaction including inertial fusion need pre-amplifier modules (PAM) which must respect a high beam quality. The current PAM use Phosphate glass doped with Neodymium material to work at 1053 nm with a repetition rate of 1 shot / 5 min limited by a low thermal diffusion. However, it would be interesting to increase the shot rate for alignment or diagnostic purposes. Therefore, we propose to change this amplification material by crystal Nd :Lu :CaF2 with a thermal diffusion ten times higher in view of achieving a repetition rate of 10 Hz. In this PhD work, we report a characterization of the thermal induced effects under a diode inhomogeneous and transverse pump with an energy density of 13 J/cm2. We begin by studying the spatially resolved induced birefringence with a cross polarizer-analyzer setup. We reconstruct the stress pattern of our samples by simulating the global setup with COMSOL® software which includes the thermal and mechanic Multiphysics interaction. This model allows us first to compare with experimental results and then to entirely simulate the mechanical behavior of this new material. A detailed study of the influence of the crystal orientation on the induced birefringence is presented to explain the disparity observed on the different samples Nd :Lu :CaF2 measurements
Kelley, Sean Patrick. "KOSOVO : the Balkan time bomb /". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA340982.
Texto completoKing, Charles David. "Chadwick, Liverpool and the bomb". Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266221.
Texto completoLeme, Juliana. "Projeto, desenvolvimento e ensaios "In Vitro" de novo modelo de bomba de sangue para circulação extracorpórea = bomba espiral". [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263547.
Texto completoDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: Um modelo de bomba de sangue para circulação extracorpórea (CEC) está sendo desenvolvida, esta denominada Bomba Espiral (BE). Essa bomba é composta por um fuso cônico com rosca de duas entradas, montado por dois rolamentos em um eixo de aço inoxidável, fixado a um cone externo. O movimento de rotação do fuso cônico é gerado por acoplamento magnético a um motor, através de dois imãs de seis polos. Esse trabalho tem como objetivo desenvolver protótipos com modificações estruturais, baseados em estudos prévios, realizados no Baylor College of Medicine em 1997, e realizar ensaios de desempenho hidrodinâmico, para determinar a melhor geometria, e ensaios para determinar o Índice Normalizado de Hemólise (INH). Foram realizados ensaios In Vitro, em um circuito de teste fechado e os dados de pressão, fluxo e rotação foram registrados. Com os dados obtidos, foram geradas curvas de desempenho hidrodinâmico (pressão x fluxo) em diferentes rotações, para cada protótipo os quais foram comparados entre si. O modelo da BE que apresentou o melhor desempenho possui características como imã maior, cone externo mais cônico e um rotor com uma profundidade de rosca maior, e este foi comparado com uma bomba utilizada como referência, Bio-Pump®. Foi verificado que a BE possui um melhor desempenho hidrodinâmico. Foi realizado o ensaio In Vitro para determinação do INH, calculado a partir da Hemoglobina Livre no Plasma, seguindo as diretrizes das normas ASTM F1841 e F1830. Os resultados obtidos de INH foram considerados excelentes para esta aplicação, INH = 0,0118927 ±0,0061 g/100L para a BE e INH = 0,007373± 0,004942341 g/100L para a Bio- Pump®. Estes resultados não apresentam diferenças estatisticamente significantes quando comparados. Portanto, o desenvolvimento da BE resultou em um modelo viável e competitivo, apresentando excelente desempenho hidrodinâmico e um ótimo INH. O próximo passo será a confecção dos moldes injeção em policarbonato, para a realização de novos ensaios de desempenho hidrodinâmico, determinação do INH, estudo de visualização de fluxo, ensaios In Vivo e, posteriormente, Avaliação Clínica
Abstract: A model of blood pump has been developed, the Spiral Pump. This pump has an internal rotor, a conically shaped fuse, containing threads with double entrance on its surface. This rotor is supported by two bearings assembled at a stainless steel shaft, fixed to the housing's base. The rotation of the conical fuse is generated by magnetic coupling to a motor, using two annular magnets with six poles. The main objective of this paper is to describe the development methodology of this new blood pump to be for Cardiopulmonary Bypass, during cardiac surgery. Based on previous studies, six different prototypes were developed and constructed. Hydrodynamic performance tests and hemolysis test were conducted. The hydrodynamic performance tests were made in vitro, using a closed loop circuit where total pressures head, flows and rotational speed were registered. Hydrodynamic performance curves were generated (pressure x flow) in different rotational speeds, for each prototypes. The prototype #6 showed best results and the preliminary hemolysis tests were conducted to determine the Normalized Index of Hemolysis (NIH), calculate through Plasma Free Hemoglobin (ASTM F1841 and F1830). NIH results were satisfactory for this application, NIH = 0,0118927 ±0,0061 g/100L, not showing significant different when compared to results from a reference pump (Bio-Pump®, Meditronic). The next step is to produce pumps made by polycarbonate injection to be able perform new hemolysis tests, in vivo tests and, subsequently, clinical evaluation
Mestrado
Materiais e Processos de Fabricação
Mestre em Engenharia Mecânica
Magiawala, Kiran R. (Kiran Ramanlal). "The B-1B bomber : a program history". Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/34036.
Texto completoGranjeiro, Jeferson Brambatti. "Estudo numérico de cavitação em bomba ejetora". Instituto Tecnológico de Aeronáutica, 2009. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=975.
Texto completoMendez, Bracamonte Jhon Paul Michael. "Rentabilidad de una bomba centrífuga por envejecimiento". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/11937.
Texto completoTrabajo de suficiencia profesional
Huamantalla, Orosco Julio Augusto. "Análisis modal de una bomba turbina vertical". Master's thesis, Pontificia Universidad Católica del Perú, 2019. http://hdl.handle.net/20.500.12404/15491.
Texto completoTesis
Tóndolo, Bruno. "Putzmeister, maquinaria para el bombeo de concreto". Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/168600.
Texto completoPanamá puede considerarse, fácilmente, un país privilegiado en muchos aspectos. Actualmente su economía es líder en la región, con 5.8 % de crecimiento (2017) según el Banco Mundial y una de las más estables en el mundo, duplicando su ingreso per cápita entre 2004 y 2014, como reseña un informe del Centro para el Desarrollo Internacional de la Universidad de Harvard. A la par de los grandes proyectos privados, Panamá ha desarrollado ambiciosas obras públicas, como la Ampliación del Canal, la línea uno del metro y otra sumamente importante como la expansión del Aeropuerto Internacional de Tocumen, conocido como el Hub de las Américas. Este boom se ha dado porque el país cuenta con un ambiente favorable para los negocios, gracias a la estabilidad económica, beneficios fiscales y seguridad personal, donde más de 110 empresas multinacionales se han visto atraídas por estos factores. Este crecimiento constante ha generado numerosas oportunidades de negocio, que Putzmeister, la marca líder en bombas de concreto en el país, ha sabido aprovechar desde el principio. Actualmente con una participación del 83% de los equipos del mercado, con una propuesta de valor enmarcada principalmente en el servicio postventa. Sin embargo, las oportunidades que ofrece la industria han dado apertura a un mercado donde los competidores con propuestas de valor menos atractivas, pero con precios bajos, están consiguiendo resultados en la entrega a sus clientes de soluciones relativamente confiables y económicas, generando un movimiento inusual del mercado y una posible guerra de precios Por tal razón el siguiente plan de Marketing, busca revertir esta situación replanteando algunas estrategias de mercadeo de la marca, dirigiendo las acciones de marketing hacia el mercado objetivo adecuado.
Sudnik, John. ""Dirty bomb" attack assessing New York City's level of preparedness from a first responder's perspective /". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Mar%5FSudnik.pdf.
Texto completoThesis Advisor(s): Christopher Bellavita. "March 2006." Includes bibliographical references (p. 93-97). Also available online.