Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1990-1994  (4)
  • 1960-1964  (4)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Formation and decay of a spheromak plasma (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 1816-1827 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic properties of the spheromak configuration produced by a combination of slow theta and Z discharges in the University of Maryland Spheromak experiment (MS) are reported. The magnetic structure of the plasma in MS has been mapped out by arrays of passive magnetic pickup coils. The Taylor relaxation process is observed during the formation phase. The magnetic profile evolves in such a way that the ratio of poloidal current Ip to poloidal flux ψ in the plasma approaches a constant value, where μ0Ip=kelψ. When the spheromak is formed, the magnetic field configuration is close to Taylor's minimum energy state, μ0j=kB. This constant k is related to the size of the spheromak produced. A spheromak with 1.0 T maximum field, corresponding to 650 kA poloidal current, has been produced in MS. However, due to the high plasma density (6–8×1020 m−3) and the presence of low-Z impurities (mainly carbon and oxygen), the plasma is radiation dominated with electron temperature ≤15 eV. The magnetic field decays exponentially during the decay phase. Axisymmetric equilibrium states that could exist in the configuration are calculated with a Grad–Shafranov equilibrium code. Comparison of the numerical calculation with the experimental measurements indicates that the magnetic-field structure stays close to the equilibrium state as the plasma decays.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860818
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Histochemical and Homogenization Studies of Mitochondrial α-Glycerophosphate Dehydrogenase in the Nervous System (1961)
    [s.l.] : Nature Publishing Group
    Nature 191 (1961), S. 718-719 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the presence of reduced menadione (A"3H2), tetrazolium salts are reduced to formazan pigment. This reaction, which is non-enzymic4, renders histo-chemically visible the reduction of K3 by its reductase. Formazan formation by A"3H2 occurred above pH 6-1 and at neutral and slightly alkaline pH; ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/191718a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Modelle für Reaktionen zwischen organischen und mineralischen Substanzen im Boden (1960)
    Springer
    Cellular and molecular life sciences 16 (1960), S. 38-40 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Low molecular siloxanes, silicagel, aluminium oxide, permutite, and perlite were dissolved by ammoniacal catechol solution. Silicagel was also dissolved by othero-diphenols. Low molecular silicon organic ester or complex compounds were crystallised from the reaction products of silicagel with catechol and 2,3-naphthalenediol. On orthoclase an insoluble brown cover was formed. The reaction ofo-diphenols with silicates may be important in soil formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02201792
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Substantivity and other factors responsible for formazan patterns in dehydrogenase histochemistry (1961)
    Springer
    Cellular and molecular life sciences 17 (1961), S. 136-141 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es wurden substantive Eigenschaften verschiedener Mono- und Ditetrazoliumsalze gegenüber Gewebebestandteilen im Schnittpräparat untersucht. Ditetrazole werden im allgemeinen stärker vom Gewebe adsorbiert als Monotetrazole. Ausnahmen bilden Monotetrazole mit polaren Substituenten oder Azobenzol-Resten in 3-Stellung. Ditetrazole mit elektronegativen Gruppen in 2-Stellung werden stark von Lipoprotein-Strukturen adsorbiert und zeigen in Modellexperimenten Substantivität für ungesättigte Lipoide. An verschiedenen Beispielen wird die Bedeutung substantiver Tetrazol-Eigenschaften für die Lokalisation von Dehydrogenaseaktivität im Schnittpräparat dargelegt. Die Lokalisation enzymatisch gebildeten Formazans ist im Falle von substantivem Tetrazol ein Ausdruck für die Adsorption der Farbstoffvorstufe an bestimmte Gewebekomponenten. Im Falle von nichtsubstantivem Monotetrazol besteht die Möglichkeit zur Bestimmung von Orten intrazellulärer Enzymaktivität ohne unspezifische Anfärbung von Gewebsbestandteilen. Die Bedeutung der stark voneinander abweichenden Eigenschaften von in der Histochemie gebräuchlichen Tetrazoliumsalzen für die Darstellung intra-und extramitochondrialer Aktivität wird diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02160833
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Histochemical demonstration of uridine diphosphate glucose dehydrogenase (1961)
    Springer
    Cellular and molecular life sciences 17 (1961), S. 317-318 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es wird eine Methode zur histochemischen Lokalisation der Aktivität von DPN-spezifischer UDPG-Dehydrogenase beschrieben. Das Wasserstoff übertragende System vom reduzierten Coenzym zuN-Thiazol-substituiertem Monotetrazol (Reduktionsindikator) bestand in der endogenen Menadionreduktase. Stärkste UDPG-Dehydrogenaseaktivität fand sich in Leberepithelien und proximalen Nierentubuli ausgewachsener Tiere (Ratte, Maus).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02158177
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Antinucleon-nucleon scattering and potential models (1993)
    Springer
    Few body systems 14 (1993), S. 37-52 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present a summary of the Workshop on “Antinucleon-Nucleon Scattering and Potential Models” held at Archamps (France) near Geneva during October 6–8, 1991.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01344367
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Measurements of the total cross section differenceΔσ Т innp transmission between 0.86 and 0.94 GeV (1994)
    Springer
    The European physical journal 61 (1994), S. 53-57 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present results of the total cross section differenceΔσ Т obtained in transmission measurements at the energies 0.86, 0.88, 0.91 and 0.94 GeV. The SATURNE II polarized beam of free neutrons obtained from the break-up of polarized deuterons was transmitted through the polarized Saclay frozen-spin proton target. The beam and target polarizations were oriented in the vertical direction. The present results agree with previous SATURNE measurements and improve the amplitude analysis in the forward direction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01641886
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Measurements of the two and three spin-index observables inn p elastic scattering between 0.80 and 1.10 GeV (1994)
    Springer
    The European physical journal 61 (1994), S. 579-585 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present data of several rescattering observables measured inn p elastic scattering between 0.80 and 1.10 GeV. The SATURNE II polarized beam of free neutrons obtained from the break-up of polarized deuterons was scattered on the Saclay polarized frozen-spin proton target. Three different configurations of beam and target polarization directions were used: the observablesD onon andK onno were measured with the normal-normal spin configuration at eight energies;N onkk ,D os″ok andK os″ko were determined with the longitudinal-longitudinal configuration at six energies;N onsk ,D os″ok andK os″so with the sideway-longitudinal configuration at six energies. Part of the data was obtained with an unpolarized CH2 target where only the two spin-index polarization transfer parametersK os″ko andK os″so were determined. Data are compared with phase shift analyses predictions and with the LAMPF results at 0.788 GeV. Present results are the first measurements of rescattering observables above 0.80 GeV. They provide an important contribution to any future theoretical or phenomenological analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01552624
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...