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  • 2000-2004  (6)
  • 1985-1989  (8)
  • 1
    Electronic Resource
    Electronic Resource
    Kinetics and mechanism of solvent-exchange and anation reactions of sterically hindered diethylenetriamine complexes of palladium(II) in aqueous solution (1989)
    s.l. : American Chemical Society
    Inorganic chemistry 28 (1989), S. 3759-3765 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00318a028
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of laser light thomson-scattered from a cooling electron beam (1987)
    Springer
    Applied physics 44 (1987), S. 87-92 
    Details
    ISSN: 1432-0649
    Keywords: 41.80E ; 52.25 ; 29.15D
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract First results are presented from an experiment scattering laser light from a relativistic electron beam. The 5 cm diameter continuous electron beam of 28 keV kinetic energy and 2.6 A current presents an electron gas of a density of 8×107 cm−3, from which 20 ns pulses of laser light (490 nm) were scattered at a repetition rate of 15 Hz and an average power of 20 mJ per pulse. The Doppler-shifted wavelength of photons backscattered under 180° was analysed with a Fabry-Perot interferometer. This technique provides, for the first time, a non-destructive measurement of the velocity distribution in an electron beam radially resolved in space. The results presented here comprise the direct measurement of the absolute electron energy and the degree of space-charge compensation in the electron beam. The determination of an upper bound of 10−2 for the ratio of longitudinal to transverse electron temperature implies the first direct measurement of a flattened velocity distribution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694198
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Current density functional theory for optical spectra: A polarization functional (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 115 (2001), S. 1995-1999 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: In this paper we present a new approach to calculate optical spectra, which for the first time uses a polarization dependent functional within current density functional theory (CDFT), which was proposed by Vignale and Kohn [Phys. Rev. Lett. 77, 2037 (1996)]. This polarization dependent functional includes exchange-correlation (xc) contributions in the effective macroscopic electric field. This functional is used to calculate the optical absorption spectrum of several common semiconductors. We achieved in all cases good agreement with experiment. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1385370
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  • 4
    Electronic Resource
    Electronic Resource
    Epidemiology of acne in the general population: the risk of smoking (2001)
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 145 (2001), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Acne is a common skin disorder, but epidemiological data from the general population obtained by examination are scarce. Clinical experience suggests an association between smoking and acne, although confirmatory evidence from appropriate studies is lacking.Objectives To determine the prevalence and demographic factors of acne in a general population sample and to investigate the association of smoking and acne on a qualitative and quantitative level.Methods In a cross-sectional study, 896 citizens (aged 1–87 years, median 42) of the City of Hamburg were dermatologically examined. The prevalence and severity of acne were recorded and further information on demographic variables, medical history, and alcohol and cigarette consumption were obtained by a standardized interview.Results According to the clinical examination, acne was present in 26·8% overall, and was more prevalent in men (29·9%) than women (23·7%) (odds ratio, OR 1·37, 95% confidence interval, CI 1·01–1·87). Prevalence followed a significant linear trend over age with peak prevalence between 14 and 29 years (P 〈 0·001). The reported age at onset was significantly lower in women than men (P = 0·015). According to multiple logistic regression analyses acne prevalence was significantly higher in active smokers (40·8%, OR 2·04, 95% CI 1·40–2·99) as compared with non-smokers (25·2%). A significant linear relationship between acne prevalence and number of cigarettes smoked daily was obtained (trend test: P 〈 0·0001). In addition, a significant dose-dependent relationship between acne severity and daily cigarette consumption was shown by linear regression analysis (P = 0·001).Conclusions Smoking is a clinically important contributory factor to acne prevalence and severity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2133.2001.04290.x
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  • 5
    Electronic Resource
    Electronic Resource
    Aspects of early social smiling by infants with Down's syndrome (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Child 12 (1986), S. 0 
    Details
    ISSN: 1365-2214
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Summary Smiling by live Down's syndrome and seven non-handicapped infants was recorded longitudinally during face-to-face interactions with their mothers over the first 6 months of the infants' lives. Two conditions, “mobile” (mothers were asked to talk to the baby as naturally as possible) and ‘immobile’ (silent and maintain an impassive face), were contrasted. Between-group comparisons confirmed previous findings of significantly delayed emergence and less frequent smiling by the infants with Down's syndrome. Their smiles were also found to be shorter, and less discriminative between the two free-to-face conditions. The non-handicapped infants showed significantly more cry/distress vocalizations in the immobile than in the mobile condition, while the reverse was found for the Downs syndrome infants. A close temporal association between smiling and eye contact with mothers was found for both groups of infants. In a free interaction condition, mothers of the Down's syndrome babies showed a stronger tendency to use kinaesthetic and tactile stimulation than mothers of the non-handicapped infants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2214.1986.tb00483.x
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  • 6
    Electronic Resource
    Electronic Resource
    Early selection for extreme resistance to potato virus Y and tobacco etch virus in potato using a β-glucuronidase-tagged virus (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 119 (2000), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The Rysto gene from Solanum stoloniferum introduced into potato cultivars (Solanum tuberosum L. ssp. tuberosum) confers resistance to potato virus A, potato virus V and potato virus Y (PVY). In addition to PVY, tobacco etch virus (TEV) and a TEV construct that encodes β-glucuronidase (TEV-GUS) were inoculated to determine the inheritance of resistance to these viruses in progenies obtained from potato cultivars containing the Rysto gene. While cultivars ‘Karlena’ and ‘Delikat’ were susceptible, ‘Bettina’ and clone 927eY were resistant to PVY, TEV and TEV-GUS, as determined by enzyme linked immunosorbent assay, biotest and GUS assay, respectively. The segregation ratios obtained from the progenies of ‘Bettina’בDelikat’ and 816eY בKarlena’ indicate that resistances to PVY and TEV are governed by one dominant gene or two genes tightly linked in coupling phase. Evidently, Rysto confers broad spectrum resistance to potyviruses. TEV resistance could be reliably detected 4 days after inoculation with the TEV-GUS construct by GUS assay. Therefore, the GUS-tagged TEV construct can be used for early selection for resistances based on the gene Rysto or closely linked genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2000.00485.x
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  • 7
    Electronic Resource
    Electronic Resource
    Bilateral breast reduction for symmastia associated with chronic skin infection (1986)
    Springer
    European journal of plastic surgery 9 (1986), S. 132-134 
    Details
    ISSN: 1435-0130
    Keywords: Symmastia ; Breast reduction ; Medial Confluence of Breasts ; Pilonidal sinus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Medial confluence of the breasts, or symmastia, is probably not a rare entity, despite the paucity of the literature on the subject. It causes aesthetic disfigurement and problems with apparel and, in the case presented, was associated with chronic furunculosis or multiple pilonidal sinuses. Both problems were satisfactorily dealt with by means of a modified bipedicled vertical dermal flap technique with excision of the central part of the chest wall, where the skin lesions were present. The result was cosmetically acceptable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00298957
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  • 8
    Electronic Resource
    Electronic Resource
    Host defense against Pseudomonas aeruginosa requires ceramide-rich membrane rafts (2003)
    [s.l.] : Nature Publishing Group
    Nature medicine 9 (2003), S. 322-330 
    Details
    ISSN: 1546-170X
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Pseudomonas aeruginosa infection is a serious complication in patients with cystic fibrosis and in immunocompromised individuals. Here we show that P. aeruginosa infection triggers activation of the acid sphingomyelinase and the release of ceramide in sphingolipid-rich rafts. Ceramide reorganizes ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nm823
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  • 9
    Electronic Resource
    Electronic Resource
    Green's function for steady-state heat conduction in a bimaterial composite solid (2000)
    Springer
    Computational mechanics 25 (2000), S. 627-634 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The derivation of a Green's function for steady-state heat conduction in anisotropic bimaterials is presented. The Green's function is obtained through a Fourier representation to obtain both free-space, singular parts and region-dependent, regular parts. To obtain the region-dependent parts of the Green's function, the homogeneous solution is written using the virtual force method. Full details of the necessary inversion integrals are provided. The Green's function is shown to degenerate to the usual logarithmic potential for steady-state heat conduction in isotropic solids. The normal derivatives necessary for implementation of the Green's function in boundary integral equations are provided, and an example calculation of the Green's function in a quartz-copper material system is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050509
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  • 10
    Electronic Resource
    Electronic Resource
    Comparison of different antigen preparations in an evaluation of the immune response toCampylobacter pylori (1988)
    Springer
    European journal of clinical microbiology & infectious diseases 7 (1988), S. 570-575 
    Details
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This study presents a novel approach to the analysis of protein antigens ofCampylobacter pylori for use in serology. Protein fractions of this bacterium were resolved in polyacrylamide gel electrophoresis, eluted from gel strips in an electric field and used for coating of microtiter plates in an ELISA-type assay run with a small set of sera from both infected and non-infected patients. Reactivity and discriminative power of the different fractionated antigens (1–9) and crude antigen preparations (A–C) were compared. Better discrimination was achieved between positive and negative sera with high molecular weight fractionated preparations (antigens 8 and 9) than with low molecular weight fractions. Among the crude antigen preparations, antigens A (sonicated whole cells) and C (ultracentrifugated sonicate) seem to have a better discriminative power than antigen B (acid glycin extract).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01962618
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