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  • 1
    Online Resource
    Online Resource
    Introduction to the Theory of Magnetism : International Series of Monographs in Natural Philosophy. (1972)
    San Diego :Elsevier Science & Technology,
    Details
    Keywords: Magnetism. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (295 pages)
    Edition: 1st ed.
    ISBN: 9781483156682
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=1834239
    Language: English
    Note: Front Cover -- Introduction to the Theory of Magnetism -- Copyright Page -- Table of Contents -- Preface to the German Edition -- Foreword to the English Edition -- Abbreviations and Symbols -- Classification of Magnetic Substances -- Chapter I. Diamagnetism -- 1. The Bohr-yan Leeuwen Theorem -- 2. Diamagnetism of Atoms and Ions -- 3. The Fermi Gas -- 4. The Landau Levels -- 5. Diamagnetism of Electrons -- 6. Cyclotron Resonance -- Chapter II. Paramagnetism -- 1. Paramagnetism of Free Electrons -- 2. Classical Theory of Paramagnetism -- 3. The Zeeman Effect of Free Atoms -- 4. Paramagnetism of Free Atoms (Rare Earths) -- 5. Paramagnetism of Atoms in a Crystal -- 6 · Paramagnetic Resonance -- Chapter III. Ferromagnetism -- 1. Interactions -- 2. The Molecular-field Approximation -- 3. Spin Waves -- 4. High Temperatures -- 5. The Band Model -- 6. Ferromagnetic Resonance -- References -- Index.
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  • 2
    Electronic Resource
    Electronic Resource
    High-performance short-wavelength single quantum well pump lasers (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 1246-1247 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Performance of graded-index separate-confinement heterostructure single quantum well lasers especially designed for cw optical-pumping applications is reported and is compared to that of conventional double-heterostructure devices. The quantum well devices have the advantage of lower threshold current, higher slope efficiency, and can be operated at longer cavity lengths, leading to lower diode-series resistance and reduced cooling requirements. Quantum wells of aluminum composition ranging from 6.7% to 12% and thicknesses of 12 and 20 nm were investigated. Useful lasing wavelengths between 780 and 820 nm were achieved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339995
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Transmission line studies for ITER compatible reflectometers : Proceedings of the eleventh topical conference on high temperature plasma diagnostics (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 431-434 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Corrugated circular transmission lines are considered as high performance, low loss, broadband lines for reflectometry on ITER. These lines are proposed as a possible solution for the equatorial low-field-side system and as a part (receiver-vacuum vessel) of the transmission lines for the high-field side and the out-of-midplane reflectometer system, because of their restricted access. Theoretical and experimental studies show the good properties of these lines: low losses, a smooth characteristic transmission, and a very low level of parasitic reflections. Quasioptical systems are also proposed as a solution for the coupling of several microwave emitter receivers, working in a fundamental waveguide, into a single broadband corrugated line. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147599
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Vacuum ultraviolet absorption spectroscopy in the spectral interval of Lyman-α of atomic hydrogen and deuterium in an ion source plasma (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 1800-1806 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Atomic hydrogen and deuterium in the plasma of a magnetic multipole source are investigated with respect to the fraction of the atomic component and the energy distribution of the atoms. Information is obtained by analysis of the wings of the optically thick Lyman-α transitions, and by admixture of small amounts of the other isotope as a thermometer gas in order to warrant transparency in the center of the line. The atom to molecule density ratio is found to be around 15%; the analysis of the energy distributions yields a dominant cold component (Tcold∼400 K), a hot component (Thot(approximately-greater-than)2000 K) which comprises about 20% of the atoms, and a small but significant amount of fast atoms, described by Tfast with energies up to several eV; the relative amount of these atoms is below 1%. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146977
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Photoluminescence study of the growth of indium phosphide by metalorganic chemical vapor deposition (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 5486-5492 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The growth of unintentionally doped indium phosphide by low pressure metalorganic chemical vapor deposition (LPMOCVD) using triethlylindium and phosphine has been investigated by low temperature photoluminescence (PL). Pregrowth annealing was found to result in improved crystalline quality of the seed surface. The predominant acceptor impurity on the annealed substrate surface and in the initial epitaxial region (1200 A(ring)) was shown to be carbon. The major acceptor impurity in thicker epilayers further away from the substrate interface was determined to be Zn. Silicon was also identified from the PL spectra, though its concentration might be much smaller than that of zinc. No deep level impurities were observed in this material. Most important of all, the highly resolved exciton PL spectrum demonstrated that excellent quality InP comparable to the best material grown by vapor phase epitaxy could be grown by LPMOCVD without the need for phosphine cracking.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.335460
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    High-power conversion efficiency quantum well diode lasers (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 1318-1319 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: cw power conversion efficiencies of 57% have been obtained on uncoated diode lasers emitting nearly 300 mW per facet. This performance is achieved by using a low-resistance graded index separate confinement single quantum well AlGaAs/GaAs structure with high (84%) differential quantum efficiency and low threshold current.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.98715
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Evaluation of the Ez-HBT Helicobacter blood test to establish 〈fr〉Helicobacter pylori〈/fr〉 eradication (2005)
    Oxford, UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 22 (2005), S. 0 
    Details
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background : The urea blood test (Ez-HBT) has been shown to compare favourably with the urea breath test in the diagnosis of active Helicobacter pylori infection.Aim : To examine the performance characteristics of the Ez-HBT Helicobacter blood test in establishing success or failure of therapy in H. pylori-infected adults using the 13C urea breath test as the reference method.Methods : 13C urea breath test and Ez-HBT Helicobacter blood test were performed 4–6 weeks after completion of treatment in H. pylori positive subjects. Basal urea breath samples were collected; basal Ez-HBT Helicobacter blood test samples were not. Ez-HBT Helicobacter blood test results were reported as positive, negative, or indeterminate.Results : Seventy patients generated 126 measurable sets of urea breath and blood tests. The H. pylori cure rate was 93%. The sensitivity, specificity, and accuracy of the Ez-HBT Helicobacter blood test were 100%, 97%, and 97%, respectively. Six of eight false positive and indeterminate Ez-HBT Helicobacter blood test results could be attributed to incomplete fasting or a 13C enriched diet. After correcting for the non-fasting state, the positive predictive value of the Ez-HBT Helicobacter blood test improved from 56% to 86%.Conclusion : The performance characteristics of the Ez-HBT Helicobacter blood test are comparable with that of 13C-urea breath test in establishing H. pylori eradication after therapy. Errors related to incomplete fasting can be mitigated by collection of a basal blood sample.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2036.2005.02655.x
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    A PRACTICAL MODIFICATION OF THE ROSENMUND REDUCTION (1970)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 172 (1970), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1970.tb34976.x
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Cell Biology of Von Willebrand Factor (1990)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Cell and Developmental Biology 6 (1990), S. 217-242 
    Details
    ISSN: 0743-4634
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.cb.06.110190.001245
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Synthesis of some pyrimidine 2'-amino-2'-deoxynucleosides (1971)
    s.l. : American Chemical Society
    The @journal of organic chemistry 36 (1971), S. 250-254 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00801a002
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    Paper (German National Licenses)
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