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  • 1
    Electronic Resource
    Electronic Resource
    Nuclear Magnetic Resonance Relaxation and the Microbrownian Motion in Polymers. Local and Collective Motions and Their Viscosity Dependence (1975)
    s.l. : American Chemical Society
    Macromolecules 8 (1975), S. 171-176 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma60044a014
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  • 2
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    Egrule vs. Ruleg Teaching: A Replication (1977)
    Washington D.C., Wash. : Periodicals Archive Online (PAO)
    The Journal of Experimental Education. 46:1 (1977:Fall) 15 
    Details
    ISSN: 0022-0973
    Topics: Education
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:h101-1977-046-01-000004
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  • 3
    Electronic Resource
    Electronic Resource
    Über den Aminosäurestoffwechsel von Milchsäurebakterien aus Wein (1976)
    Springer
    European food research and technology 161 (1976), S. 259-266 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Zusammenfassung Durch quantitative Ionenaustauschersäulenchromatographie wurden die Veränderungen der Aminosäuren nach Wachstum von insgesamt 105 Stämmen von überwiegend aus Wein isolierten Milchsäurebakterien untersucht. Infolge des Bakterienwachstums erfolgte in den meisten Fällen nur eine geringe, nicht sicher nachweisbare Abnahme der Aminosäuren, unabhängig davon, ob die Aminosäuren essentiell sind oder nicht. Von einzelnen Stämmen werden einige Aminosäuren vollständig abgebaut (Arginin, Glutaminsäure, Histidin, Tyrosin), andere Aminosäuren werden nur teilweise umgesetzt (Tryptophan, Asparginsäure, Threonin, Isoleucin, Phenylalanin). Der Abbau von Histidin wurde nur bei einem Stamm vonPediococcus cerevisiae beobachtet. Als Endprodukte entstehen Histamin und CO2. Glutaminsäure und Arginin werden vor allem von Stämmen vonLactobacillus brevis zu 4-Aminobuttersäure bzw. Ornithin abgebaut.
    Notes: Summary The changes in the concentrations of amino acids in the culture medium of lactic acid bacteria were determined by ion exchange chromatography after growth of 105 strains that were mainly isolated from wine. After growth of lactic acid bacteria a small but not significant decrease in the concentration of most amino acids is observed. There is apparently no difference between essential or not essential amino acids. Certain bacterial strains decompose the amino acids arginine, glutamic acid, histidine, and tyrosine completely. Other amino acids (tryptophane, aspartic acid, threonine, isoleucine, and phenylalanine) are only partially metabolized. Among 28 strains ofPediococcus cerevisiae only one strain was able to decarboxylate histidine to histamine. This was the only strain found to have this ability. Several strains ofLactobacillus brevis were able to form 4-aminobutyric acid and ornithine from glutamic acid and arginine respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01105812
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  • 4
    Electronic Resource
    Electronic Resource
    Investigation of the mode crossing resonance shape of the 1.52 μm and 633 nm neon transitions (1978)
    Springer
    The European physical journal 289 (1978), S. 31-36 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The shape of zero field mode crossing resonances has been investigated both theoretically and experimentally. Taking into account the effect of collisions, the resonance shape is given generally by superposition of four Lorenzians. Two of them are caused by the aligned laser levels (ifJ≧1), the other two are produced by phase destroying collisions. Investigations of the zero field mode crossing resonances of the 2s 2→2p 1(λ=1.52μm) and 3s 2→2p 4 (λ=633nm) Ne laser transition revealed deviations of the measured data from a Lorentz profile. By computer fitting both the alignment relaxation rate $$\gamma _{2s_2 } $$ (2) and the relaxation rate of the optical coherence $$\gamma _{2s_2 ,2p_1 } $$ was obtained from one resonance curve. An investigation of the relaxation rate of the optical coherence as a function of the Ne pressure yields the pressure broadening constant (7±3) MHz/Torr and the natural linewidth 1/2 $$\tfrac{1}{2}(\gamma _{2s_2 } + \gamma _{2p_1 } ) = (18.8 \pm 1.7)$$ MHz which are in agreement with inverted Lamb dip measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408492
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  • 5
    Electronic Resource
    Electronic Resource
    High resolution Zeeman spectroscopy on the neon levels 2s 2 and 2p 4 by mode crossing at high magnetic fields (1977)
    Springer
    The European physical journal 282 (1977), S. 253-259 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Mode crossing signals in laser intensity occur if the Zeeman splitting of one laser level equals the frequency separation between two laser modes. This kind of experiment using two optical frequencies for double resonance yields high resolution in Zeeman spectroscopy and allows very accurate determination ofg J -values. Mode crossing dips of the 0.633μ, 1.152μ and 1.523μ transitions of the He-Ne-laser in an axial magnetic field were measured by tuning the field strength up to 0.17 Tesla. At this field strength the Zeeman splitting of the Dopplerbroadenedσ-lines corresponds to approximately 6 Gcps. The frequency separation between resonant modes was controlled by means of a scanning high resolution Fabry-Perot. The experimental results for theg J -values areg J =1.2211±0.002 for the Ne 2s 2 level andg J =1.3008±0.002 for the Ne 2p 4 level. A pressure inducedg J -shift of aboutΔg J /(g J ×p He)=−1.6×10−3/Torr for the 2p 4 level has been observed. The influence of helium collisions disturbing the Zeeman splitting of the 2p 4 state is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01414892
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  • 6
    Electronic Resource
    Electronic Resource
    Allo-Rosetten nach Nierentransplantation bei isohistogenen Rattenstämmen (1977)
    Springer
    Research in experimental medicine 170 (1977), S. 71-82 
    Details
    ISSN: 1433-8580
    Keywords: Renal transplantation ; inbred strains of rats ; alloimmune rosettes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 33 renal transplantations in the isohistogeneic rat strains DA/Han and BDE/Han were performed. The transplanted animals were killed at different days after transplantation and the following dates investigated: 1. number of rosette forming spleen cells with donor erythrocytes, calculated for 10.000 spleen cells and to the total number of extracted spleen cells, 2. haemagglutinin titers with donor erythrocytes, 3. titers of serum IgG, 4. total number of spleen cells, weight of spleens, weight and volumes of kidney transplants and the number of peripheral blood lymphocytes and granulocytes. The results demonstrate that the method of immunocytoadherence as described by BIOZZI and ZAALBERG in xenogeneic transplantation systems can also be used in allogenic systems. The course of the immune response was biphasic. Quantitation of allorosette forming cells can be considered as a parameter of allograft rejection. The current literature as to the T- or B-cell specificity of rosetting cells is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01852119
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  • 7
    Electronic Resource
    Electronic Resource
    Disalignment collision cross sections of the neon levels 2p 4 and 2s 2 obtained by mode crossing (1978)
    Springer
    The European physical journal 289 (1978), S. 21-29 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Alignment destroying collision cross sections of the Ne levels 2p 4 and 2s 2 were measured by investigation of the zero-field mode crossing resonances of a multimode He/Ne-laser operating on the 3s 2→2p 4 (λ=633nm) and 2s 2→2p 1 (λ=1.52μm) Ne transitions respectively. The measurements were carried out with the aid of a small sample cell which was placed inside the laser cavity and filled with pure Neon or a mixture of the He and Ne. Comparison of the measured cross sections concerning the 2p 4 level with corresponding Hanle effect measurements shows that in multimode operation velocity changing collisions do not produce an additional broadening of the mode crossing resonances. The alignment destroying cross section is almost temperature independent in the case of He collisions; it decreases, however, with increasing temperature in the case of Ne. Due to the allowed dipol transition between the 2s 2 and the ground state of Ne, radiation trapping and resonance interaction takes place if the gas filling contains Ne. The effect on the mode crossing resonance width is investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408491
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  • 8
    Electronic Resource
    Electronic Resource
    Mode-crossing signals of high order on the 4d 95s 2 2 D 5/2 state of Cd II isotopes (1978)
    Springer
    The European physical journal 288 (1978), S. 113-118 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In the linearly polarized radiation field of a 442 nm He-Cd laser containing a natural isotope mixture, saturation-induced mode-crossing signals of the 4d 95s 2 2 5/2 state of Cd II are observed due to the even as well as the odd isotopes. The signal width of about 10−4 T yields high resolution. Thus the signal splitting respective to the magnetic quantum number can be resolved. Theg J - andg F -factors of the2 D 5/2 state are determined as follows:g J=1.1980±0.0036,g F(F=2)=1.397±0.008,g F(F=3)=1.002±0.009.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408639
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