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  • Electronic Resource  (23)
  • 1985-1989  (16)
  • 1920-1924  (6)
  • 1905-1909  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Valence-band effective masses of GaAs (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 447-450 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The density-of-states effective masses for the heavy-hole, light-hole, and split-off valence bands of GaAs have been calculated as a function of energy for each band. The calculations are based on a full k⋅p theory with the most recent values used for the matrix elements. Provision has been made for the effect of the split-off energy on the matrix elements of the split-off band. The results show important nonparabolicities which should be taken into account in modeling the valence band, and rational polynomial fits have been made for ease of computation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341217
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  • 2
    Electronic Resource
    Electronic Resource
    New powder diffractometer at HASYLAB/DESY : International conference on synchrotron radiation instrumentation (SRI−88) (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 2380-2381 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The new powder diffractometer installed on the beamline B2 at HASYLAB/DESY is described. It features a new design with a blocked double circle plus a third single circle which can be translated towards one another. The wide space between the two circle units conveniently holds complicated and spacious attachments and makes the instrument especially suitable for measurements under controlled environment conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140725
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Power deposition and current drive by intense microwave beams in tokamaks (1989)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 1 (1989), S. 142-147 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electron trapping by intense wave electric fields can alter the power deposition of electron-cyclotron waves in a tokamak when high-power sources are employed. The effect of wave trapping is examined in a ray-tracing study that utilizes plasma and wave parameters appropriate for the Microwave Tokamak Experiment (MTX) [National Technical Information Service Document No. DE-88016919 (1986)]. It is found that while wave trapping does result in some degradation in the rate of power deposition, single-pass power deposition is expected to remain significant in MTX. In examining current drive for MTX, the influence of electron trapping in the magnetic wells of the tokamak equilibrium field is included. Relativistic and magnetic trapping effects reduce the driven current by 25% to 50%. This initial study does not include the effects of gradients in the magnetic field and wave vector and therefore provides lower bounds for the power deposition and driven current.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.859092
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of cesarean section on outcome in high- and low-risk very preterm infants (1989)
    Springer
    Archives of gynecology and obstetrics 246 (1989), S. 91-96 
    Details
    ISSN: 1432-0711
    Keywords: Cesarean section ; Vaginal delivery ; Tiny neonate ; Fetal outcome ; High risk ; Low risk
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of mode of delivery on the survival and morbidity of 24- to 32-week infants (500–1500 g) was studied in 262 consecutive deliveries. The study population was divided into high-risk (e.g., hypertension) and low-risk (e.g. incompetence of the cervix) groups by evaluation of risk factors. 194 very preterm newborn were classified as high risk and 68 as low risk. In both groups the perinatal outcome of vaginal delivery and cesarean section delivery was compared. Cesarean section was associated with a highly significantly improved survival rate in the high-risk group, but was not associated with differences in fetal outcome in the low-risk group. The results of this study do not support primary cesarean section as the method of delivery for all very preterm fetuses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00934125
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  • 5
    Electronic Resource
    Electronic Resource
    Response-oriented therapy with CHOP and VIM-Bleo in high-grade malignant non-Hodgkin's lymphomas (1988)
    Springer
    Annals of hematology 56 (1988), S. 269-271 
    Details
    ISSN: 1432-0584
    Keywords: Non-Hodgkin's lymphomas ; Chemotherapy ; Consolidation therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Twenty four patients with high grade malignant NHL (stage II 8, stage III 4, stage IV 12 patients respectively) were treated with a response-oriented regimen: Treatment was initiated according to the CHOP-protocol. Patients achieving at least a partial remission after 2 and a complete remission (CR) after 4 cycles were continued on CHOP to a total of 9 cycles. Patients not meeting these criteria were switched to a combination of Etoposide, Ifosfamide, Methotrexate, and Bleomycin (VIM-Bleo). With CHOP treatment, 16 patients (67%) achieved a CR. Of the remaining 8, 7 were treated with VIM-Bleo; 5 of these entered CR for a overall CR rate of 21/24 (88%). With a median follow up of 28 months 7 patients relapsed: 6 relapses occurred in patients with a rapid initial response and treated only with CHOP. We conclude, that there is a significant risk of relapse even in patients readily responding to CHOP and that consolidation therapy with a non cross-resistant regimen may improve results in these patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00320288
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  • 6
    Electronic Resource
    Electronic Resource
    Magnetic fields near Mars: first results (1989)
    [s.l.] : Nature Publishing Group
    Nature 341 (1989), S. 604-607 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Phobos 2 carried two triaxial flux-gate magnetometers: the experiment MAGMA (magnetic fields near Mars) and the FIG. 1 Main boundaries and events observed by the FGMM and MAGMA experiments during the first three low-altitude elliptical orbits (El, E2 and E3) and during circular orbits (outer ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/341604a0
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  • 7
    Electronic Resource
    Electronic Resource
    Skull base chordoma with cavernous sinus involvement. Partial or radical tumour-removal? (1986)
    Springer
    Acta neurochirurgica 83 (1986), S. 31-37 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A report of eight cases of skull base chordoma is given and the related literature reviewed. From disappointing experience with incomplete tumour removal and radiation the conclusion is drawn, that radical tumour removal at the first attempt should be strived for, even if the operative risk seems to be high. Cavernous sinus invasion should not be a reason to omit operation. Loss of function of one eye appears to be justified if radical tumour removal can be achieved. Possibly, the operative strategy can be improved by combining a frontal transbasal with a frontotemporal subtemporal approach, thus creating a chance for preservation of oculomotor function even in patients whose tumour has invaded the cavernous sinus region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01420505
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  • 8
    Electronic Resource
    Electronic Resource
    The Powder Diffractometer Project at Hayslab (1986)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 9 (Jan. 1986), p. 47-56 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/21/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.9.47.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Megaturbidite: An acceptable term? (1987)
    Springer
    Geo-marine letters 7 (1987), S. 63-67 
    Details
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Terminology should facilitate communication; however, inaccuracies can lead to misunderstanding; new and revived terms normally add to the confusion. Megaturbidite is a rather common term in Europe used to identify a thick, extensive deposit from an exceptionally large mass flow. Their grain size can vary from large blocks to clay size. If the term megaturbidite is used, is should be restricted to layers that: (1) are thick compared to the host rock; (2) are laterally extensive; (3) differ in composition from the host rock; and (4) lack submarine fan geometries. They are excellent markers for stratigraphic and seismic correlations, and useful in basin analyses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02237985
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  • 10
    Electronic Resource
    Electronic Resource
    Influence of relative sea level changes on the construction of the Mississippi Fan (1989)
    Springer
    Geo-marine letters 9 (1989), S. 161-170 
    Details
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract A conceptual sea-level-driven depositional model for individual fanlobes (channel-overbank systems) of the Mississippi Fan does not permit direct application of the sequence stratigraphic principles of Vail and colleagues. Deep Sea Drilling Project Leg 96 results suggest that, during initial relative lowering of sea level, the canyon and upper fan channel were formed; excavated fine-grained slope sediments may have formed a debris flow deposit base for the fanlobe. Continued lowering produced constructional channel-levee-overbank deposits. Rising relative sea level inhibited input of coarse clastics, and channel depressions filled with muds. A blanket of (hemi)pelagics represents relative high sea level stand.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02431043
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