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  • Articles: DFG German National Licenses  (23)
  • 2000-2004  (7)
  • 1985-1989  (5)
  • 1980-1984  (11)
  • 1
    Electronic Resource
    Electronic Resource
    Si self-interstitial injection from Sb complex formation in Si (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 3254-3259 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It has recently been established that Si self-interstitials are generated during annealing of high-concentration Sb layers in Si. In the present work, we make use of samples grown with molecular-beam epitaxy. We monitor, at different times and temperatures, the diffusion enhancement or retardation of deep B or Sb marker layers next to a 1.1×1020 cm−3 Sb box, as well as the formation of Sb precipitates within the box. It is concluded that the interstitials are not associated with precipitate growth, but that they are generated from formation of Sb-vacancy complexes, primarily involving 2 Sb atoms. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1289234
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    INTRAUTERINE HAEMATOMA AN ULTRASONIC STUDY OF THREATENED ABORTION (1981)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 88 (1981), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Ultrasonic scanning in patients with symptoms of threatened abortion occasionally revealed an echo-free area between the membranes and the uterine wall. The echo-free area was found in patients at 11 to 20 weeks gestation who had a live fetus and is believed to represent blood. Seven smaller haematomas of less than 35 ml gradually disappeared and the pregnancies continued until term. Three patients who had haematomas of more than 50 ml subsequently aborted or had a premature delivery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1981.tb00936.x
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  • 3
    Electronic Resource
    Electronic Resource
    First Electron Spin Resonance Evidence for the Generation of the Daunomycin Free Radical and Superoxide by Red Blood Cell Membranes (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 551 (1988), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1988.tb22326.x
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  • 4
    Electronic Resource
    Electronic Resource
    The spectral forms of transient ESR spectra of radical pairs and the origin of the antiphase structure (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 113 (2000), S. 1595-1604 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We show that transient electron spin resonance (ESR) spectra of short lived radical pairs can be written formally as a superposition of Lorentzian-like lines and the corresponding dispersive lines. The coefficients to these spectral components depend strongly on the frequency and amplitude of the microwave (mw) field and consequently a variety of spectral forms may result. The coefficients, and thus the spectral form, are determined by the interradical interaction induced rate of change of the longitudinal and transversal electron spin polarization. The longitudinal polarization is responsible for the well known chemically induced dynamic electron polarization (CIDEP) which changes the intensity of the lines without affecting the line shape. The transversal polarization is shown to be responsible for the antiphase structure (APS) in accordance with our previous proposition [J. Chem. Phys. 109, 8743 (1998)]. A simple one re-encounter model calculation illustrates and explains qualitatively most of the observed APS characteristics. Numerical calculations are used to discuss anomalously large APS splitting. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.481947
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  • 5
    Electronic Resource
    Electronic Resource
    Hydroacoustic measurement of swimming speed of North Sea saithe in the field (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 58 (2001), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Saithe Pollachius virens, tracked diurnally with a split-beam echosounder, showed no relationship between size and swimming speed. The average and the median swimming speeds were 1·05 m s−1(±0·09 m s−1) and 0·93 m s−1, respectively. However, ping-to-ping speeds up to 3·34 m s−1 were measured for 25–29 cm fish, whose swimming speeds were significantly higher at night (1·08 m s−1) than during the day (0·72 m s−1). The high average swimming speed could be related to the foraging or streaming part of the population and not to potential weakness of the methodology. However, the uncertainty of target location increased with depth and resulted in calculated average swimming speeds of 0·15 m s−1 even for a stationary target. With increasing swimming speed the average error decreased to 0 m s−1 for speeds 〉0·34 m s−1. Species identity was verified by trawling in a pelagic layer and on the bottom.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.2001.tb00556.x
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  • 6
    Electronic Resource
    Electronic Resource
    Food consumption and daily feeding periodicity: comparison between pelagic and demersal whiting in the North Sea (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 57 (2000), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Pelagic North Sea whiting Merlagius merlangus fed at night, while demersal whiting fed by day. The estimated specific daily ration ranged from 4·38 to 7·84% in 1992 and from 3·99 to 10·31% in 1993 using the in situ rate of gastric evacuation. Using Andersen's evacuation model the specific daily ration ranged from 0·41 to 1·66% in 1992 and from 0·78 to 1·75% in 1993. The specific daily rations were significantly different where energy density of stomach content by length class of whiting was significantly different between the two layers and years. The fact that daily ration was related to prey composition and energy density of the prey and spatial distribution of the whiting, demonstrates the need for a sampling design that includes both pelagic and demersal layers when quantifying the food consumption of whiting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.2000.tb02180.x
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  • 7
    Electronic Resource
    Electronic Resource
    Seasonal variations in the energy density of fishes in the North Sea (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 59 (2001), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The energy density (ED, kJ g-1 wet mass) of saithe Pollachius virens, haddock Melanogrammus aeglefinus, whiting Merlangius merlangus, Norway pout Trisopterus esmarki, herring Clupea harengus, sprat Sprattus sprattus, sandeel Ammodytes marinus and pearlsides Maurolicus Muelleri, from the North Sea, increased with total length, LT. However, there was not always a significant (P〉0·05) linear relationship between LT and ED. Seasonal differences in ED were obvious in mature fish, while geographical differences were insignificant. For all species there was a highly significant correlation (P〈0·0001) between the percent dry mass of the fish (DS) and ED. A general relationship was established for gadoids and sandeel ED=–3·1492+0·3459 DS and herring ED=–4·6395+0·4170 DS. Thus seasonal and size-specific data on ED needed for bioenergetics and gastric evacuation models can be determined simply from DS, which is considerably less costly and time consuming than calorimetry or proximate analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.2001.tb00137.x
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  • 8
    Electronic Resource
    Electronic Resource
    Ossifying fibromyxoid tumour of soft parts, with focus on unusual clinicopathological features (2003)
    Oxford, UK : Blackwell Science Ltd
    Histopathology 42 (2003), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Aims:  Ossifying fibromyxoid tumour is a rare lesion that generally occurs in the soft tissues of proximal limbs/girdle, or head and neck. Histologically, it usually consists of bland, mitotically inactive, S100+ cells in a fibromyxoid matrix with a characteristic peripheral ossification. However, we present two cases that deviated from this pattern.Material and methods:  One tumour, which was removed from the axilla of a 55-year-old female, was unusual in its large size (120 mm in diameter) and in its restriction of bone formation to its central zones. The other tumour, which occurred in a 62-year-old female, was remarkable in its acral location on the hand and high mitotic activity (four mitoses per high-power field). These features caused concern and follow-up of the patients was recommended. So far there have been no recurrences (25 and 18 months after surgery, respectively). An additional previously undescribed feature was the presence of fibronexus-like structures by electron microscopy in the second case. However, a myofibroblastic phenotype was not supported by the immunohistochemical findings.Conclusion:  Though a distinct entity, ossifying fibromyxoid tumour may exhibit a wider clinicopathological spectrum than generally recognized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2559.2003.01623.x
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  • 9
    Electronic Resource
    Electronic Resource
    Gamma-spectroscopy within the island of high-spin isomers nearN=82 (1980)
    Springer
    The European physical journal 294 (1980), S. 113-124 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A NaI sum-spectrometer combined with Ge-counters has been used to characterize the members of the island of high spin isomers nearN=82. On the basis of half lives, totalγ-decay energies and discreteγ-lines, assignments of 22 isomers are given or confirmed. The isomers are localized to the region 82≦N≦86 andZ≦68, and the excitation energies vary from 3 MeV to 12.2 MeV. An empirical relation between spin and excitation energy is presented and on this basis isomeric spin values up to (33±2)ħ are deduced. The isomers are thought to be due to strong alignment of 2 to 8 shell-model particles in a spherical or possibly weakly oblate potential.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01435046
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  • 10
    Electronic Resource
    Electronic Resource
    High-spin isomers in W and Os nuclei; Competition betweenK-quantization and triaxiality (1985)
    Springer
    The European physical journal 321 (1985), S. 567-575 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Re ; 21.10.Gv ; 23.20.Ck ; 27.70.+q
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Results of a search for high-spin isomers in W and Os nuclei withN=104–107 are presented. Targets of48Ca and48, 50Ti are bombarded with a pulsed136Xe beam, and delayed gamma-radiation is detected by an array of NaI- and Ge-detectors. Several new isomers, with spin values up to ∼22h, are found in178,180W and180, 182, 183Os. Markedly different decay patterns and hindrance factors are found in the Os isotopes as compared to the expectations based on theK-selection rule valid for axially symmetric nuclei. The findings are ascribed to the onset of triaxial distortions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01432431
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