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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.
21

Glass formation, crystallization and powder consolidation in highly undercooled tellurium - copper alloys

Smith, Jeffery S. January 1983 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1983. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 162-169).
22

The determination of selenium and tellurium in blister copper and copper concentrates

Gray, Douglas James Skirving January 1940 (has links)
Selenium and tellurium do not occur to any great extent in Nature and they are seldom studied in any detail. However, a general understanding of their properties, both physical and chemical, is essential in an investigation of their analytical determination. A general account may be found in many of the text-books on inorganic chemistry, but the following resumè has been included in this dissertation for the sake of completeness.
23

Study of the spark spectra of tellurium

Joshi, Yoginder N. January 1964 (has links)
The spark spectra of Tellurium have been photographed from the infrared to the ultraviolet (9040 Å to 340 Å) on a variety of spectrographs including a 3-metre normal, incidence vacuum spectrograph, a 2-metre grazing incidence vacuum spectrograph, a 21-ft, concave grating spectrograph, a Hilger Medium Quartz and a Hilger large automatic prism spectrograph. Two sources were used -1) a disruptive electrodeless discharge and 2) a condensed spark in helium, The "pole effect" exhibited by the spectral lines excited in the spark enabled us to assign each line to its appropriate ionic parent, either Te I, Te II, Te III, or Te IV. These excitation assignments were confirmed and extended by observations with the electrodeless discharge, which excited all the spectra including Te V and Te VI, by varying the tellurium pressure and the length of the external spark-gap. Out of 6000 lines appearing on our plates 3500 have never been observed earlier. The region 2200 Å - 1300 Å has been photographed systematically for the first time since Lacroute's work (1928). The whole of the observed spectral region has been photographed for the first time under uniform conditions of controlled excitation. These data have been used to confirm, revise and extend the analyses of Te III, Te IV, Te V and Te VI. In both Te III and Te IV the resonance lines have been indentified for the first time. The number of classified lines have been increased from 160 to 560 in Te III and from 25 to 230 in Te IV, while the number of the levels has been increased from 40 to 85 in Te III and from 14 to 56 in Te IV. The values of the ionization potentials have been revised to 29.04 Volts (Te III) and 37.41 Volts (Te IV). The hydrogenic levels in Te IV are fitted by a core polarization parameter A = 715 which involves a core dipole polarizability ∝= 41.1 x 10ˉ²⁸ cm³. The extensions in Te V and Te VI do not involve such basic additions. In Te V, the number of classified lines have been increased from 27 to 156 and in Te VI from 10 to 25. Twenty-four and five levels have been added to Te V and Te VI respectively. The revised values of the Ionization Potentials are 58.63 Volts and 70.90 Volts for Te V and Te VI respectively. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
24

Acoustoopic diffraction and deflection in tellurium for the carbon dioxide laser

Souilhac, Dominique Jacques January 1987 (has links)
No description available.
25

Investigation of tellurium for the detection of pulsed CO2 laser radiation

Ribakovs, Gennadijs January 1976 (has links)
No description available.
26

Design and Fabrication of Bi2Te3/Sb2Te3 Micro TE-cooler

She, Kun-dian 12 September 2007 (has links)
This paper presents an integrated column-type micro thermoelectric cooler (£g-TEC) constructed with serial connected p-type antimony-tellurium (Sb2Te3) and n-type bismuth-tellurium (Bi2Te3) micro pillars deposited by electrochemical deposited technology. To optimize the power factor, density and uniformity of the TE films and to enhance the reproducibility of £g-TEC device, a cathode with tunable rotary speed and with accurate current controller has been designed in the electroplating system of this research. The electroplating deposited Bi2Te3 and Sb2Te3 with an average thickness of 8 £gm, are connected using Cr/Au layers at the hot junctions and cold junctions. The measured Seebeck coefficient and electrical resistivity are -86 £gV/K and 16 £g£[-m for Bi2Te3 films after annealed at 250¢XC, and are 68 £gV/K and 30 £g£[-m for Sb2Te3 films after annealed at 200¢XC. The optimized power factors of the n-type (2.64¡Ñ10-4 W/K2m) and p-type (2.64¡Ñ10-4 W/K2m) telluride compounds have been demonstrated in this paper. Under 5 volts driven, the integrated £g-TEC device shows average cooling achieved is about 1.3 ¢XC.
27

Synthesis and properties of tellurium-containing long chain fatty acid derivatives /

Chau, Hei. January 1993 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1994. / Includes bibliographical references (leaves 293-306).
28

Separacao do Mo-99 do Te-132 usando tioureia como agente complexante .Aplicacao a separacao do Mo-99 dos produtos de fissao

MESTNIK, SONIA A.C. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:32:25Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:10:31Z (GMT). No. of bitstreams: 1 03134.pdf: 2064767 bytes, checksum: 2ee561f5c7d60b299f3f1a26c7b85831 (MD5) / Tese(Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
29

Separacao do Mo-99 do Te-132 usando tioureia como agente complexante .Aplicacao a separacao do Mo-99 dos produtos de fissao

MESTNIK, SONIA A.C. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:32:25Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:10:31Z (GMT). No. of bitstreams: 1 03134.pdf: 2064767 bytes, checksum: 2ee561f5c7d60b299f3f1a26c7b85831 (MD5) / Tese(Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
30

Low temperature nuclear orientation studies of nuclei far from stability

Brown, Daniel Edward January 1990 (has links)
No description available.

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