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  • 1
    Electronic Resource
    Electronic Resource
    Improved cryopreservation of human white cells by haemaccel-dimethyl sulfoxide
    Amsterdam : Elsevier
    Cryobiology 14 (1977), S. 697 
    Details
    ISSN: 0011-2240
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0011-2240(77)90069-4
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  • 2
    Electronic Resource
    Electronic Resource
    Successful modeling, design, and test of electron cyclotron resonance ion sources : Proceedings of the 7th international conference on ion sources (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 729-731 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Plasmas in electron cyclotron resonance ion sources (ECRIS) are collisionless and can therefore be simulated by only following the motion of electrons in the confining static magnetic and oscillating microwave field of ECRIS. The experimental performance of three different ECRIS is successfully compared to calculated spatial electron (plasma) and electron energy density as well as to the energy spectrum and the average energy of the electrons. Further simulations suggest a new and better design of an ECRIS, the good experimental performance of which corresponds to the predictions. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148667
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  • 3
    Electronic Resource
    Electronic Resource
    Magnetic pulsed extraction of highly charged ions from a plateau ECRIS : Papers from the Ninth International Conference on Ion Sources (2002)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 1140-1144 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The afterglow is known to produce pulses of highly charged ions suited for injection to accelerator facilities. We tested a new technique of magnetic pulsed extraction (PUMAEX) in our plateau-ECR ion source PECRIS III. This source has a large resonance volume due to a homogeneous magnetic field in its center. Compared to the afterglow of PECRIS III we reached higher ion currents. The length of the PUMAEX pulses depends on the electric current pulse in the PUMAEX coil, we used pulse lengths of 0.25–1 ms. The PUMAEX coil is a small coil which is placed around the extraction hole in the plasma electrode. The absolute value of the static magnetic field near the extraction hole can be reduced below the value in the center of the source by a current pulse in the PUMAEX coil. Thus the magnetic confinement of the ECR plasma is opened specifically in the direction of the extraction hole. The plasma therefore escapes from the source more directed to the extraction hole than in the afterglow. Since the coil is very near to the location where the magnetic field is changed, it was possible to use a small coil, which could be placed in the plasma electrode of PECRIS III without major modifications. Currently we are building a new multifrequency plateau ECRIS. Using eight frequencies between 17 and 18 GHz we intend to improve the electron heating in the large resonance volume. The highest frequency will be set to the resonance frequency of cold electrons at the center of the source. The lower frequencies will match the resonance frequencies of more energetic electrons as those electrons have a greater relativistic mass. In the near future we will test the PUMAEX technique with this new source. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1427036
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  • 4
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    Hjort, J. Some Results of the International Ocean Research (Book Review) (1913)
    Wiesbaden : Periodicals Archive Online (PAO)
    Geographische Zeitschrift. 19:7 (1913:Juli 15) 418 
    Details
    ISSN: 0016-7479
    Topics: Geography
    Notes: Bücherbesprechungen
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:h092-1913-019-07-000043
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  • 5
    Electronic Resource
    Electronic Resource
    Einige weitere Lösungen räumlicher Knickprobleme infolge nichtkonservativer Torsion (1988)
    Springer
    Archive of applied mechanics 58 (1988), S. 103-108 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary The spatial buckling of straight rods, twisted by uniformly distributed moments, is treated on the basis of the criterion of kinetic stability. In this connexion the influence of external damping on the critical loads is also taken into account.
    Notes: Übersicht Auf der Grundlage des kinetischen Stabilitätskriteriums wird das räumliche Knicken gerader Stäbe unter Streckendrillmomenten behandelt. Hierbei wird auch der Einfluß der äußeren Dämpfung auf die kritischen Lasten berücksichtigt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00536229
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  • 6
    Electronic Resource
    Electronic Resource
    Nonlinear vibration and stability analyses on the basis of a kinetic stability theory for arbitrarily curved rods (1998)
    Springer
    Archive of applied mechanics 68 (1998), S. 46-63 
    Details
    ISSN: 1432-0681
    Keywords: Key words Kinetic stability ; nonlinear rod theory ; parametrically excited oscillation ; nonlinear vibration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary After formulating nonlinear kinetic stability equations for curved and twisted rods, these are used for the solution of static and kinetic lateral buckling problems as well as for linear and nonlinear stability analysis of parametrically excited vibrations of circular arches.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004190050145
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  • 7
    Electronic Resource
    Electronic Resource
    Die Aufstellung und Lösung der Stabilitätsgleichungen für Kipp-Probleme bei strenger Beachtung der Verformungen des Grundzustandes (1981)
    Springer
    Archive of applied mechanics 50 (1981), S. 31-40 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary From the general valid stability equations formulated in [3] for straight elastic rods the tipping equations will be derived under strict consideration of deformations of the fundamental state and will be solved for three load conditions.
    Notes: Übersicht Aus den in [3] aufgestellten allgemein gültigen Stabilitätsgleichungen für gerade elastische Stäbe werden die Kippgleichungen bei strenger Beachtung der Verformungen des Grundzustandes abgeleitet und für drei Belastungszustände gelöst.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00536305
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  • 8
    Electronic Resource
    Electronic Resource
    Kinetische Stabilität gerader, insbesondere durch nichtkonservative Torsion beanspruchter Stäbe bei Beachtung der äußeren Dämpfung (1987)
    Springer
    Archive of applied mechanics 57 (1987), S. 99-111 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary After setting up general stability equations of straight bars these are applied to the problem of kinetic buckling caused by torsion. Then, the critical loads are determined for two conditions of the twisted bar with special regard to external damping.
    Notes: Übersicht Nach Aufstellung allgemeiner Stabilitätsgleichungen für gerade Stäbe werden diese auf kinetische, durch Torsion bedingte Knickprobleme angewendet. Dann werden für zwei Stabilitätsfälle des tordierten Stabes die kritischen Lasten unter Berücksichtigung der äußeren Dämpfung ermittelt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00541384
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  • 9
    Electronic Resource
    Electronic Resource
    Über den Einfluß nichtlinearer Verformungen im Grundzustand auf statische und kinetische Stabilitätsfälle der Stabtheorie (1991)
    Springer
    Archive of applied mechanics 61 (1991), S. 152-161 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary For some conditions of static and kinetic stability of the straight rod the critical loads are determined with special regard to the exact, non-linear deformations of the fundamental state. In case of kinetic stability the external damping is additionally taken into account.
    Notes: Übersicht Für einige statische und kinetische Stabilitätsfälle des geraden Stabes werden die kritischen Lasten unter Berücksichtigung der genauen, nichtlinearen Verformungen des Grundzustandes ermittelt. Bei den kinetischen Stabilitätsfällen wird zusätzlich die äußere Dämpfung beachtet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00788049
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  • 10
    Electronic Resource
    Electronic Resource
    Kinetische Stabilität elastischer Schalentragwerke (1994)
    Springer
    Archive of applied mechanics 64 (1994), S. 457-471 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary In the present paper, generally valid stability equations for shells are set up. After transformation into integral equations, ordinary differential equations with regards to time are derived through series expansion of the disturbance-induced displacements. Any fundamental state can be substituted in these equations, and its kinetic stability can be investigated. This is shown here for cylindrical shells subjected to sudden axial loads.
    Notes: Übersicht Nach Aufstellung allgemeingültiger Stabilitätsgleichungen für Schalentragwerke werden diese zunächst in Integral- und dann mittels Reihenansätzen für die Störverschiebungen in gewöhnliche Zeitdifferentialgleichungen überführt. Hierin kann jeder Grundzustand eingesetzt und auf seine kinetische Stabilität hin untersucht werden. Das wird beispielhaft für einige, stoßartig durch Axiallasten beanspruchte Kreiszylinderschalen gezeigt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00796299
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