Dissertations / Theses on the topic 'K-253'
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St, Pierre Kelly M. "Revolutionizing Czechness: Smetana and Propaganda in the Umělecká Beseda." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1333472822.
Full textWard, A. J. "In-beam spectroscopy of high-K states in No-254." Thesis, University of Liverpool, 2016. http://livrepository.liverpool.ac.uk/3005052/.
Full textBalagura, V., I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, et al. "Observation of D_s1(2536)^+ → D^+π^-K^+ and angular decomposition of D_s1(2536)^+ →D^*+K_S^0." American Physical Society, 2008. http://hdl.handle.net/2237/11346.
Full textFasolo, Sandro Adriano. "Sistema de comunicação via radio na frequencia de 250 MHz com modulação do tipo F&K binaria." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261791.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
Made available in DSpace on 2018-07-21T20:45:09Z (GMT). No. of bitstreams: 1 Fasolo_SandroAdriano_M.pdf: 6533753 bytes, checksum: 09d090d85a0fa234d033ea3dcf1a71ef (MD5) Previous issue date: 1996
Resumo: O trabalho teve como objetivo o estudo, projeto e construção de um sistema de comunicação via rádio. A faixa de freqüências de transmissão é de 240 MHz até 260 MHz, em passos de 100 kHz. A modulação utilizada é do tipo FSK binária, com desvio de freqüência da portadora de :t 50 kHz. O sinal de transmissão é gerado por multiplicadores de freqüência e por um sintetizador de freqüência. As estabilidades de freqüências dos osciladores são obtidas com a utilização de cristais piezoelétricos. Discutimos a teoria e os projetos dos circuitos do transmissor e do receptor. Apresentamos a análise de alguns circuitos utilizando o programa de simulação de circuitos eletrônicos PSPICE. A potência média de RF obtida no estágio de saída foi de 200mW
Abstract: Not informed.
Mestrado
Eletronica e Comunicações
Mestre em Engenharia Elétrica
Segado, Martin Alan. "Analysis and mitigation of key losses in a multi-stage 25-100 K cryocooler." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/87793.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 119-125).
A need exists for small, robust, and efficient cryocoolers operating in the 25-100 K range; however, while technological advances have enabled the development of such machines, a greater understanding of the losses affecting their performance is needed to make informed design tradeoffs. This thesis takes steps to provide this understanding by examining several losses in the context of a multi-stage cryocooler being developed by MIT and Advanced Mechanical Technologies, Inc. Based on a modular Collins-type design, this cryocooler will use computer-controlled floating piston expanders to simultaneously provide 20 and 100 Watts of cooling at 25 and 100 K, respectively. The contributions in this thesis can be divided into two broad categories. The first is concerned with the systems-level efficiency of the cryocooler, and addresses a significant inefficiency caused by an inherent cooler-to-load temperature mismatch. By using an alternative cryocooler configuration with multiple expanders in series, the overall efficiency may be increased by an estimated 24%. A simple memorizable heuristic was also found to estimate the magnitude of the mismatch loss in a given stage of the cryocooler: the fractional increase in operating power is approximately the base-10 logarithm of the pressure ratio divided by twice the number of series expanders, assuming a monatomic working fluid. The second area of research focused on the design of the cryocooler's unique floating piston expanders. A variety of losses affect the performance of these expanders; these range from the obvious to the obscure (e.g., the enhanced "shuttle" heat transfer that arises from reciprocating piston motion) and often favor conflicting design choices. Eleven such losses are discussed along with both existing literature and a new analysis of fluid flow and heat transfer in the piston-cylinder gap. A numerical model incorporating six of these losses was used to gain considerable insight into the design tradeoffs involved in expander design and provide preliminary support for the multi-expander designs discussed earlier. The simulations also challenged a previous design guideline for the piston's stroke length and, unexpectedly, revealed that imperfect expansion and compression can yield a net increase in expander efficiency due to the importance of shuttle heat transfer.
by Martin Alan Segado.
S.M.
Smith, Linda S. "Mozart's dialectic with gender : Le nozze di Figaro and Piano concerto no. 25, K. 503 /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/11391.
Full textSouza, Emily Fonseca de. "A unificação da Síria e o jihād de Nūr ad-Dīn na crônica Kitāb al-Kāmil fi l-ta\'rīkh, de Ibn al-Athīr." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/8/8138/tde-25102016-115357/.
Full textIn our dissertation, we study the extract of Ibn al-Athīr\'s chronicle, Kitāb al-Kāmil fi l-ta\'rīkh, reporting the years of Nūr ad-Dīn\'s governmet. Our research is divided into three parts. The first presents the author and his work, the chronicles origin and the composition, besides presenting the historiographical debate on the work. The second approachs the rhetoric genres of Aristotles Rhetoric and the use of two of these genres, epideictic and deliberative, at the construction of Ibn al-Athīr\'s discourse. The third discusses the definitions of jihād both at Coran and at muslims juridical treatises, indicating how our author uses them to legitimate Nūr ad-Dīn\'s action in order to elaborate him, through his discourse, as an example of ruler.
Lahr, David Louis. "Molecular oxygen adsorbates at a Au/Ni(111) surface alloy and their role in catalytic CO oxidation at 70 - 250 K." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36250.
Full textIncludes bibliographical references.
Oxygen is observed to adsorb molecularly on 0.13 - 0.27 ML Au/Ni(1 111) surface alloys at 77 K, in stark contrast to dissociative adsorption on Ni and no adsorption on Au surfaces. Molecular 02 adsorbates on the Au/Ni(111) surface alloy are identified by their 0=0 vibrational modes at 790, 850 and 950 cm-', measured by electron energy loss spectroscopy. Possible Ni adsorption sites for the three types of molecularly adsorbed 02 are proposed. The dramatic change in Ni reactivity occurs within a narrow Au coverage range around 0.13 ML Au and arises from poorer overlap between the Ni d-band and the 02 LUMO as the Ni d-band shifts to lower energy with increasing Au content of the Au/Ni surface alloy. The amount of molecular adsorption as a function of Au coverage cannot be described by an analytical or simulated model based on Au atom proximity to Ni sites, suggesting the role of cooperative effects in 02 stabilization. Adsorbed molecular 02 dissociates between 110 to 150 K. No oxygen desorbs. At Au coverages greater than 0.27 ML, the energy of the Ni d-band is shifted sufficiently low to destabilize oxygen adsorption.
(cont.) Carbon monoxide is catalytically oxidized on the Au/Ni(111) surface alloy at 70 and 77 K via a Langmuir-Hinshelwood mechanism. Molecularly adsorbed 02 is identified as the reactant with adsorbed CO. The reaction probability at 77 K is 0.4. Atomically adsorbed O and CO do not react at 77 or 300 K. Between 108 and 125 K, CO reacts with either atomic O adsorbed on Au atoms or with molecularly adsorbed 02. Between 125-150 K, CO2 production coincides with 02 dissociation, suggesting a "hot atom" mechanism. The reactive potential energy surfaces likely have a late transition state. This work demonstrates that the nanoscale size of Au clusters and its associated quantum size effect are not the necessary feature that enables Au-catalyzed low temperature CO oxidation. Rather, this work strongly suggests that an adsorbed 02 species similarly stabilized at the perimeter of Au nanoparticles is the critical reactant in supported oxide systems.
by David Louis Lahr.
Ph.D.
Cahill, Sarah M. "Variation of surface polysaccharides in the ST25 clonal lineage of Acinetobacter baumannii." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/207776/1/Sarah_Cahill_Thesis.pdf.
Full textBergkvist, Laila, and Maria Lorentzon. "FRISTADS : Supply Chains, från tråd till arbetsbyxa." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-18682.
Full textProgram: Textilekonomutbildningen
Uppsatsnivå: C
Pilloud, Marin Anna. "Community Structure at Neolithic Çatalhöyük: Biological Distance Analysis of Houshehold, Neighborhood, and Settlement." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253574143.
Full textAydin, Guzide. "Radiative-convective Model For One-dimensional Longwave Clear Sky Atmosphere." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609826/index.pdf.
Full textKnopp, Tobias. "Finite element simulation of buoyancy-driven turbulent flows." Doctoral thesis, [S.l.] : [s.n.], 2003. http://webdoc.sub.gwdg.de/diss/2003/knopp/knopp.pdf.
Full textAlonso, Orlay. "Illuminated Scores and the Architectural Design of Musical Form." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429802524.
Full textPeshek, Brian. "Zen Masters at Play and on Play: A Take on Koans and Koan Practice." [Kent, Ohio] : Kent State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=kent1245605316.
Full textTitle from PDF t.p. (viewed March 3, 2010). Advisor: Jeffrey Wattles. Keywords: Zen; Chan; Ch'an; Play; Koan; gongan; kung-an; kōan; Blue Cliff Record; Biyanlu; Pi yan lu; Hekiganroku; Wumenguan; Wu-men kuan; Mumonkan; Xuedou Qiongxian; Hsüeh-tou Ch'ung-hsien; Setchō Jūken; Yuanwu Keqin; Yuan-wu K'o-ch. Includes bibliographical references (p. 89-95).
Fujdiak, Radek. "Analýza a optimalizace datové komunikace pro telemetrické systémy v energetice." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-358408.
Full textJadick, Mark G. "Performance Testing and Validation Plan of the Holdup Measurement System 4 for the K-25 East Side Process Gas Piping." 2010. http://trace.tennessee.edu/utk_gradthes/809.
Full textAlbu, Mihaela [Verfasser]. "Kinetic and product studies of the hydroxyl radical initiated oxidation of dimethyl sulfide in the temperature range 250 - 300 K / by Mihaela Albu." 2008. http://d-nb.info/994151314/34.
Full textWANG, MEI-YAO, and 王美瑤. "Buddhist Approach to the Meaning of Life -- According to the Sa&;#7747;yukt&;#257;gama-S&;#363;tra and Mah&;#257;-ratna-k&;#363;&;#7789;a-S&;#363;tra." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/8dxg77.
Full text國立臺灣大學
哲學研究所
102
Since the ancient times, the meaning of life is an important topic which has been continuously discussed. Its importance comes from the inquiry into why sentient beings should live, which is a core question of life. As long as there is life, this question will not go away. Concerning about the meaning of life, quite a lot of articles lack strict examination of the concept of “meaning” and what the concept of “meaning” really asks. As a consequence, many discussions mix up the concept of meaning with other concepts such as “value” or “achievement.” In this thesis, through reflecting on the purpose of this very question, we can ascertain what meaning is asking. In order to understand our life and want to know how to guide our future life, the issue of the meaning of life is raised. So the concept of “meaning” is defined as follows: deconstructing things and abstracting the factors, making these factors connected with the world, and consciously adding the elements into future. That is to say, by this cognitive process, meaning shows forth. Through reflecting on the deeds we did and encountering our life in this way, we can understand the present life and also know how to lead our future life. However, the living world has operating mechanisms, so people cannot think just by their imagination. Therefore, what is the meaning of life will not become some sort of relativism. Buddhism has a complete worldview through the subtle observations indicating that everything emerges in the world is in the process of impermanence and is driven by causes and conditions. If ordinary people do not reflect on life this way, they may mislead their life goal and use the wrong method to achieve their goal. So the efforts will be washed away by the impermanent flow and continuous reincarnation. In this vein, the meaning of life only remains suffering. As distinct from ordinary meaning of life, Buddhism provides two other life paths. The first one is the path to liberation, which understands the reality of living world as empty of its own being. Through meditation and practices, a practitioner of the path to liberation may transform life into peace and quietude, and the meaning of life becomes peace and quietude. The other one is the path to Supreme Enlightenment, along which practicers penetrate the world through observing related causes and conditions. They transform endless lifetime into endless practices, and achieve perfection. Through this way of spiritual cultivation, the meaning of life consists in practices and liberating sentient beings.
Brunotti, Irene. "Mapitio: Swahili Muslim Publics and Postcolonial Experience. Kai Kresse. 2018. Bloomington: Indiana University Press. 237 pp. ISBN 9780253037541 & 2019. Dar es Salaam: Mkuki na Nyota. k. 256. SKU: 987998708329911." 2020. https://ul.qucosa.de/id/qucosa%3A72140.
Full textIn this review of Kai Kresse’s book, Irene Brunotti, Lecturer in Kiswahili and Swahili Studies and Researcher at the University of Leipzig, highlights the humble attentiveness with which Kresse analyses Swahili Muslim Publics. She advances a variety of arguments which emphasize that Kresse’s is an excellent contribution to Swahili Studies, Anthropology, Philosophy, Postcolonial Studies, and a number of other disciplines.