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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

An investigation of the properties and applications of the Geiger-Müller photoelectron counter,

Morris, Wilford Ernst, January 1900 (has links)
Thesis (PH. D.) - University of Michigan, 1942. / Reprinted from Journal of the Optical society of America, vol. 32, no. 1 ... January, 1942. Bibliographical footnotes.
2

Der „Discursus medicus et politicus“ von Tobias Geiger (1656). Edition und Kommentar / The "Discursus medicus et politicus" by Tobias Geiger (1656). Edition and commentary

Meyer, Stefanie January 2021 (has links) (PDF)
Der „Discursus medicus et politicus“ von Tobias Geiger ist eine Handschrift aus dem Jahr 1656. Als eine Art Lebensbericht stellt das Werk ein Plädoyer für die Chirurgie als wichtigen Bestandteil der Medizin dar. Tobias Geiger skizziert nicht nur einen „rechten medicus“ in „tempore pacis, belli et pestis", sondern er beschäftigt sich zudem mit gesundheitspolitischen Themen, wie die Vereinigung von Chirurgie und Medizin in der Ausbildung, die Abschaffung sowohl von der Landfahrerei als auch von unqualifizierten Heilpersonen, die Prüfung des Heilpersonals sowie die Verbesserung der Spitäler. In der vorliegenden Dissertation wurde das Schriftstück zunächst editiert, die lateinischen Passagen übersetzt und kommentiert. Im Anschluss wurden die Inhalte für ein besseres Verständnis weiter aufgegliedert und in den historischen Kontext gestellt. / "Discursus medicus et politicus" by Tobias Geiger is a manuscript from 1656. The work shows similarities to an autobiography and functions as a plea for surgery as an important part of medicine. Not only is Tobias Geiger sketching out a "right medicus" in "tempore pacis, belli et pestis", he is also covering health policy issues such as the unification of surgery and medicine in education, the abolition of vagrancy and other unqualified healers, the examination of medical staff, and the improvement of hospitals. In the present dissertation, the document was edited for the first time. The Latin passages were translated and commented on. For a better understanding, the content was divided and placed in a historical context.
3

Effektivität und Geltung von Rechtsnormen : eine rechtssoziologische Studie des geigerschen Modells zur Effektivität und Geltung von Rechtsnormen /

Katsas, Theodor. January 2002 (has links)
Berlin, Humboldt-Universität, veränd. Thesis (master's), 2000 entitled: Katsas, T.: Die geigersche Lehre der Effektivität und Geltung von Rechtsnormen.
4

Die Universitätsbibliothek Tübingen auf dem Weg ins 20. Jahrhundert : die Amtszeit Karl Geigers, 1895-1920 /

Syré, Ludger, January 1986 (has links)
Texte remanié de: Hausarbeit--Bibliothekswesen--Köln--Fachhochschule für Bibliotheks- und Dokumentationswesen in Köln, 1985. / Contient un choix de documents. Bibliogr. p. 95-100. Index.
5

Projeto, construção e calibração de um monitor de radiação ionizante para radiodosimetria

Silva, Luiz Sérgio Soares da January 2002 (has links)
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Física. / Made available in DSpace on 2012-10-19T17:28:25Z (GMT). No. of bitstreams: 1 189746.pdf: 411474 bytes, checksum: 532a91d16f43cf9abdf6a42c009b6293 (MD5) / No presente trabalho descreve-se um sistema instrumental que determina doses radioativas para fótons de energias na faixa de dezenas de keV a MeV. O modelo proposto é apresentado na seção de teoria e descreve o processo de multiplicação eletrônica que acontece em detetores gasosos. Neste modelo teórico a avalanche eletrônica é calculada a partir do poder de freiamento eletrônico para elétron em gases, que foi calculado através das seções de choque de colisão inelástica totais para colisões de elétron-átomo. O instrumento descrito é baseado em um detetor Geiger-Müller cilíndrico. O circuito eletrônico de tratamento dos sinais foi projetado e construído para este trabalho e é descrito no Capítulo 1. O instrumento desenvolvido e seus desempenhos relativos são comparados com resultados experimentais disponíveis na literatura. Foram determinados os coeficientes de absorção linear para fótons que atravessam absorvedores de alumínio, chumbo e água. Utilizando o mesmo procedimento experimental medimos o coeficiente de absorção linear para fótons gama incididos em caramujos da espécie Biomphalaria Tenagophila. De nosso conhecimento não há nenhum estudo prévio para o mesmo animal e desse modo não é possível comparar o resultado obtido com dados de outros autores. Não obstante, o valor determinado para o coeficiente concorda bem com o coeficiente para água para fótons de mesma energia. Esta suposição está fundamentada no fato de que a composição química básica dos tecidos do animal irradiado é predominantemente água.
6

Kritischer Empirismus : die Soziologiekonzeptionen Theodor Geigers und Otto Neuraths im Kontext ihrer Zeit /

Wilsmann, Stefan. January 2004 (has links) (PDF)
Univ., Diss.--Siegen, 2003.
7

The T([alpha,gamma]) Li⁷ reaction and a standard Geiger-Muller counter for gamma ray flux determinations

Morrow, Richard Alexander January 1959 (has links)
A study of the T(α,ɤ)Li⁷ reaction has been made at mean alpha particle energies of 1320, 560 and 350 Kev in a solid tritium-zirconium target. At the 1320 Kev energy the absolute 90° differential cross-section for transitions to the ground state has been found to be 1.89x10⁻³¹ cm² per steradian from analyses of spectra obtained in a 2¾"x4½” NaI crystal. At this energy the ratio of the differential cross-section for transitions to the first excited state to that for transitions to the ground state was found to be 0.446. This ratio was observed to remain the same at all detector angles. The excitation function roughly determined by additional runs at 560 and 350 Kev mean energy followed the form obtained by Riley of this laboratory in 1958. Angular distribution measurements at 1320 Kev gave the result that both the above mentioned gamma rays have the same angular dependence, this being 1-0.11 cos² θ + 0.39 cos⁴ θ. At 560 Kev mean energy their anisotropy was measured to be about 5%. A background from the target has been found to have an angular distribution at 1320 Kev mean alpha particle energy of 1+0.35 cos θ in laboratory co-ordinates. Both its excitation function, determined roughly from runs at 560 and 350 Kev, and its anisotropy followed a form in agreement with neutron counter measurements. It is suggested that this background is caused by neutrons from some still unknown reaction in the target. An investigation was also made of a standard thick-walled brass Geiger-Muller counter to determine its efficiency for photon energies from 0.5 to 20 Mev. A smooth curve was obtained showing efficiency increasing with gamma ray energy thus agreeing in form with previous experimental and theoretical results. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
8

The geiger counter

Warriner, Ben 15 November 2013 (has links)
Experimental work was done to determine a satisfactory method of making counters to be used in future research work, to develop a means of testing them, and to find a counter circuit which could be used in connection with this work and for demonstration work. / Master of Science
9

Zauberstab der Atomwissenschaft

Abele, Johannes 17 April 2014 (has links) (PDF)
No description available.
10

Zauberstab der Atomwissenschaft: Hans Geiger und die Magie der Kerntechnik

Abele, Johannes January 2001 (has links)
No description available.

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