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  • 11
    Electronic Resource
    Electronic Resource
    Die Cholesterin-7α-Hydroxylase-Aktivität der Rattenleber nach Hypophysektomie und nach Substitution mit Hypophysenhormonen (1976)
    Springer
    Cellular and molecular life sciences 32 (1976), S. 18-19 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In order to elucidate the role of the hypophysis in the regulation of cholesterol 7α-hydroxylase activity, male and female rats hypophysectomized on day 50 of life were treated with different hypophyseal hormones and tested on day 85 of life. Only a crude extract from human hypophysis and ovine prolactin was able to enhance the enzyme activity, thereby restoring the level of intact controls.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01932600
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  • 12
    Electronic Resource
    Electronic Resource
    Induction of cell arrest at G1/S and in G2 after treatment of Ehrlich ascites tumor cells with metallocene dichlorides and cis-platinum in vitro (1983)
    Springer
    Journal of cancer research and clinical oncology 106 (1983), S. 44-52 
    Details
    ISSN: 1432-1335
    Keywords: Metallocene dichlorides ; cis-Diammine-dichloroplatinum(II) ; Ehrlich ascites tumor ; Cytokinetics in vitro
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The influence of in vitro application of the cytostatic agents titanocene dichloride (TDC), vanadocene dichloride (VDC), and cis-diamminedichloroplatinum(II) (DDP) on the cytokinetic behavior of EAT cells was investigated. All three substances induced similar cytokinetic phenomena that are characterized on the one hand, by an accumulation of cells in the late S phase and in the G2 phase during exposure periods of 8 to 20 h. On the other hand, some cells were apparently arrested at the end of the G1 phase and, after removal of the cytostatic agents, moved through the following S, G2, and M phases as synchronized cell populations. In view of this unusual cytokinetic pattern of multiple effects, it is argued that the striking similarities in cytokinetic behavior after treatment with the three different cytostatic substances indicate analogies in their molecular mechanisms of action. The different alteration patterns observed after in vivo application of the drugs are obviously due to additional processes occurring only in vivo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00399896
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  • 13
    Electronic Resource
    Electronic Resource
    Wirkung von Acetylsalicylsäure und einem Pyrido-pyrimidin-Derivat auf die Abstoßung allotransplantierter Nieren im Tierexperiment (1975)
    Springer
    Research in experimental medicine 165 (1975), S. 67-73 
    Details
    ISSN: 1433-8580
    Keywords: Renal transplantation ; Graft rejection ; Platelet thrombi ; Antiaggregating drugs ; Nierentransplantation ; Transplantatabstoßung ; Thrombocytenthromben ; Thrombocytenaggregationshemmende Pharmaka
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Thrombocytenaggregationshemmende Pharmaka — Acetylsalicylsäure und 2-Piperazinyl-4-thiomorpholino-pyrido(3,2-d)-pyrimidin-Sulfattrihydrat—werden in ihrer Wirkung auf Abstoßungsreaktionen bei allotransplantierten Nieren an Hunden untersucht. Klinisch findet sich keine Wirksamkeit der Medikamente, dagegen zeigen interessanterweise die histologischen Befunde bei der Acetylsalicylsäuregruppe eine verminderte Abstoßungsreaktion.
    Notes: Summary The effects of anti-thrombotic drugs—Acetyl-salicylic-acid and 2-Piperazinyl-4-thiomorpholino-pyrido(3,2-d)-pyrimidin-sulfat-trihydrat—on rejection reactions of renal allografts in dogs have been studied. From the clinical point of view no effectiveness of the two drugs can be found, whereas the histological findings do clearly show diminished rejection reactions in the Acetylsalicylic-acid group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01856451
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  • 14
    Electronic Resource
    Electronic Resource
    Der Einfluß von Azetylsalizylsäure und Dipridamol auf die Abstoßung allotransplantierter Hundenieren bei präsensibilisierten Empfängern (1976)
    Springer
    Research in experimental medicine 169 (1976), S. 109-122 
    Details
    ISSN: 1433-8580
    Keywords: Renal transplantation ; Graft rejection ; Platelet thrombi ; Antiaggregating drugs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of antiaggregating agents - acetylsalicyclic acid (ASA) and dipyridamol - on the rejection of allotransplanted canine kidneys in presensitized animals were studied. Blood flow dropped more markedly in the control group than in the group treated with ASA and dipyridamol. 24 hours after transplantation the blood flow in this group was significantly higher than in the control group (p 2,5 %) and in the third group treated with dipyridamol alone. The cellular rejection started earlier and was more pronounced in the control group. Only in this group vascular rejection and microthrombi were demonstrated. Urine output ceased 24 to 60 hours after transplantation. The immunosuppressive, antiphlogistic and platelet antiaggregating effect of the combined ASA and dipyridamol therapy is thought to be responsible for the better results in this group. In this experimental model the combined treatment of ASA and dipyridamol results in a later onset of cellular rejection, in better blood-flow of the kidney and later onset of anuria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01851172
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  • 15
    Electronic Resource
    Electronic Resource
    A possible example of giant convective cells delineated by magnetic fields (1976)
    Springer
    Solar physics 50 (1976), S. 265-268 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A remarkable north-south pattern of symmetry in the location of filaments on 11 June, 1972 together with an analysis of surface magnetic field harmonics by Altschuler et al. (1974) is offered as evidence for the existence of giant convective cells. Both data suggest a longitudinal wave number of 5, a value which seems to exclude this symmetry being due to effects of a solar αω-dynamo. The lifetime of these cells was about 2–4 months. This was apparently the only instance from 1959 to 1973 of such cells being manifested in magnetic field patterns which were evident by harmonic analyses or by filament inspections.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00155291
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  • 16
    Electronic Resource
    Electronic Resource
    The High Altitude Observatory Coronagraph/Polarimeter on the Solar Maximum Mission (1980)
    Springer
    Solar physics 65 (1980), S. 91-107 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The High Altitude Observatory Coronagraph/Polarimeter, to be flown on the National Aeronautics and Space Administration's Solar Maximum Mission satellite, is designed to produce images of the solar corona in seven wavelength bands in the visible spectral range. The spectral bands have been chosen to specifically exclude or include ‘chromospheric’ spectral lines, so as to allow discrimination between ejecta at high (coronal) and low (chromospheric) temperatures, respectively. In addition, the instrument features spectral filters designed to permit an accurate color separation of the F and K coronal components, and a narrow band (5.5 Å) filter to observe the radiance and polarization of the Fe xiv 5303 Å line. The effective system resolution is better than 10 arc sec and the instrument images a selected quadrant (or smaller field) on an SEC vidicon detector. The total height range that may be recorded encompasses 1.6 to more than 6.0R ⊙ (from Sun center). The instrument is pointed independently of the SMM spacecraft, and its functions are controlled through the use of a program resident within the onboard spacecraft computer. Major experimental goals include: (a) Observation of the role of the corona in the flare process and of the ejecta from the flare site and the overlying corona; (b) the study of the direction of magnetic fields in stable coronal forms, and, perhaps, ejecta; and (c) examination of the evolution of the solar corona near the period of solar maximum activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00151386
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  • 17
    Electronic Resource
    Electronic Resource
    Observations of a post-flare radio burst in X-rays (1982)
    Springer
    Solar physics 75 (1982), S. 305-329 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract More than six hours after the two-ribbon flare of 21 May 1980, the hard X-ray spectrometer aboard the SMM imaged an extensive arch above the flare region which proved to be the lowest part of a stationary post-flare noise storm recorded at the same time at Culgoora. The X-ray arch extended over 3 or more arc minutes to a projected distance of 95 000 km, and its real altitude was most probably between 110 000 and 180 000 km. The mean electron density in the cloud was close to 109 cm−3 and its temperature stayed for many hours at a fairly constant value of about 6.5 × 106 K. The bent crystal spectrometer aboard the SMM confirms that the arch emission was basically thermal. Variations in brightness and energy spectrum at one of the supposed footpoints of the arch seem to correlate in time with radio brightness suggesting that suprathermal particles from the radio noise regions dumped in variable quantities into the low corona and transition layer; these particles may have contributed to the population of the arch, after being trapped and thermalized. The arch extended along the H ∥ = 0 line thus apparently hindering any upward movement of the upper loops reconnected in the flare process. There is evidence from Culgoora that this obstacle may have been present above the flare since 15–30 min after its onset.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00153479
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  • 18
    Electronic Resource
    Electronic Resource
    A white-light/Fe X/Hα coronal transient observation to 10 solar RadII (1983)
    Springer
    Solar physics 83 (1983), S. 153-166 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Multi-telescope observations of the coronal transient of 15–16 April, 1980 provide simultaneous data from the Solar Maximum Mission Coronagraph/Polarimeter, the Solwind Coronagraph, and the new Emission Line Coronagraph of the Sacramento Peak Observatory. An eruptive prominence-associated white light transient is for the first time seen as an unusual wave or brightening in Fe x gl6374 (but not in Fe xiv gl5303). Several interpretations of this fleeting enhancement are offered. The prominence shows a slowly increasing acceleration which peaks at the time of the Fe event. The white light loop transient surrounding the prominence expands at a well-documented constant speed to 10R ⊙, with an extrapolated start time at zero height coincident with the surface activity. This loop transient exemplifies those seen above 1.7R ⊙ in that leading the disturbance is a bright (N e-enhanced) loop rather than dark. This is consistent with a report of the behavior of another eruptive event observed by Fisher and Poland (1981) which began as a density depletion in the lower corona, with a bright loop forming at greater altitudes. The top of the bright loop ultimately fades in the outer corona while slow radial growth continues in the legs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00148250
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  • 19
    Electronic Resource
    Electronic Resource
    An observation of prominence condensation out of a coronal void (1983)
    Springer
    Solar physics 83 (1983), S. 115-119 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Photographic averaging of cine-camera data-frames from the 7 March 1970 eclipse provided a record of the inner white light corona with unusually high resolution for low-contrast features. We report that a coronal void, similar to high corona structures associated with prominence formation (MacQueen et al., 1983), extended low into the corona. During eclipse totality, a coronal rain prominence condensed from the base of the void.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00148246
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  • 20
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    Tsarist Legal Policies at the End of the Nineteenth Century: A Study in Inconsistencies (1976)
    London, etc. : Periodicals Archive Online (PAO)
    Slavonic and East European review. 54:3 (1976:July) 371 
    Details
    ISSN: 0037-6795
    Topics: History , Slavonic Studies
    Notes: History
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:0072-1976-054-03-000004
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