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  • 1
    Electronic Resource
    Electronic Resource
    Irreducible induced representations of ICC-groups (1992)
    Springer
    Mathematische Annalen 294 (1992), S. 37-47 
    Details
    ISSN: 1432-1807
    Keywords: 22D30 ; 22D20 ; 20C32
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01934311
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  • 2
    Electronic Resource
    Electronic Resource
    Quantification of vascularity in nodular melanoma and Spitz's nevus (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cutaneous pathology 24 (1997), S. 0 
    Details
    ISSN: 1600-0560
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Spitz's nevi are acquired benign melanocytic skin tumors. Usually they are differentiated from nodular melanoma by clinical and histopathological criteria. Since Spitz's nevi are one of the most common simulators of nodular melanomas their bizarre histopathology may cause diagnostic confusion and make it difficult to differentiate these two melanocytic tumors. One of the histologic features shared by Spitz's nevus and nodular melanoma is prominent vascularity. The ability of malignant melanoma to induce angiogenesis is well established whereas benign melanocytic tumors do not have a prominent overall vascularity.The purpose of this study was to find out whether the degree of vascularity of nodular melanomas differs significantly from that of benign Spitz's nevi.In this study the number of microvessels and the vessel area were determined in 23 Spitz's nevi and 16 nodular melanomas. The number of microvessels and the vessel area were determined on Ulex Europacus agglutinin I-stained sections by computer-assisted image analysis. Two methods of measurement were used, namely systematic and selective sampling. Measurement of the whole tumor specimen (systematic sampling) revealed a vessel count of 10.83/field (SD±5.97) for Spitz's nevi whereas nodular melanomas exhibited a significantly lower (p=0.04) vessel count of 6.44/field (SD±3.85). This difference was even more pronounced when the vessel area (Spitz's nevi: 17.85×10–4mm2, SD±10.32; nodular melanomas: 7.88×10-mm2, SD×5.23) was investigated (p 〈 0.001). The difference in vessel area and vessel count was insignificant for areas exhibiting the greatest vascularity (selective sampling). Measurement of vessel count and vessel area lead us to conclude that Spitz's nevi have a significantly higher vascularity than do nodular melanomas. Our results thus indicate that angiogenesis in these pigmented lesions is not correlated with malignancy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0560.1997.tb00791.x
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  • 3
    Electronic Resource
    Electronic Resource
    Stochastic Growth Models and Their Econometric Implications (1999)
    Springer
    Journal of economic growth 4 (1999), S. 139-183 
    Details
    ISSN: 1573-7020
    Keywords: stochastic growth models ; ergodicity ; econometric implications ; cross-country growth regressions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract This article considers the consequences of explicitly allowing for stochastic technological progress and stochastic labor input in the discrete-time Solow-Swan and AK growth models. It shows that the capital-output ratio, but not output per capita, is ergodic irrespective of whether there is a unit root in technology, and thus is the more appropriate measure to use in the cross-sectional analysis of the growth process. Furthermore, the article derives the cross-sectional and time-series implications of the stochastic Solow-Swan model and contrasts these to those of its deterministic counterpart. Among these implications are that the mean of the capital-output ratio depends in a precise way not only on the saving rate and the growth rate of labor input, but also on the variance and higher-order cumulants of the capital-output ratio. Using the Summers-Heston data for seventy-two countries from 1960 to 1992, strong support is found for the predictions of the stochastic Solow-Swan model as compared to those of its deterministic counterpart (as well as those of the AK model), including a significant negative cross-sectional relationship between the mean and the variance of the capital-output ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009802421114
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  • 4
    Electronic Resource
    Electronic Resource
    Impaired hemorheology in patients with postmastectomy lymphedema (1996)
    Springer
    Breast cancer research and treatment 38 (1996), S. 283-288 
    Details
    ISSN: 1573-7217
    Keywords: postmastectomy lymphedema ; rheology ; volumetry ; red cell aggregation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Lymphedema of the arm is one of the most disabling and serious complications of breast cancer. Apart from tumor infiltration or fibrosis of lymphatic pathways, little is known about factors favoring the development of lymphedema. In the present study, we investigated the impact of rheologic parameters, e.g. red cell aggregation (EA) and plasma viscosity (PV), and of capillary morphology and capillary flow in patients with breast cancer with (n = 18) and without (n = 18) lymphedema. Patients with lymphedema showed a significant increase of red cell aggregation (p 〈 0.001) that indicates a systemic component of lymphedema and might offer a possibility of prevention and therapy of this condition. A hitherto unclassified protein factor favoring red cell aggregation and lymphedema might be postulated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01806147
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  • 5
    Electronic Resource
    Electronic Resource
    Embryonic lethality and impairment of haematopoiesis in mice heterozygous for an AML1-ETO fusion gene (1997)
    [s.l.] : Nature Publishing Group
    Nature genetics 15 (1997), S. 303-306 
    Details
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Fig. 1 Gene targeting strategy to introduce AML1-ETO into the mouse Cbfa2 locus, a, Human AMU locus around the t(8;21) breakpoint, b, Targeting vector. Black box, exon 5; gray box, sequences derived from the human AML1–ETO fusion gene; white box, phosphoglycerate kinase (PGK)-neo cassette; ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/ng0397-303
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  • 6
    Electronic Resource
    Electronic Resource
    Solution of Nonlinear Rational Expectations Models with Applications toFinite-Horizon Life-Cycle Models of Consumption (2000)
    Springer
    Computational economics 15 (2000), S. 25-57 
    Details
    ISSN: 1572-9974
    Keywords: nonlinear rational expectations models ; intertemporal consumer choice ; minimum weighted residual method ; exact and certainty-equivalent solutions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Economics
    Notes: Abstract This paper considers the solution of nonlinear rationalexpectations models resulting from the optimality conditions of afinite-horizon intertemporal optimization problem satisfying Bellman'sprinciple of optimality (and possibly involving inequality constraints). Abackward recursive procedure is used to characterize and solve thetime-varying optimal decision rules generally associated with these models.At each stage of these backward recursions, either an analytical ornumerical solution of the optimality conditions is required. When ananalytical solution is not possible, a minimum weighted residual approach isused. The solution technique is illustrated using a life-cycle model ofconsumption under labor income and interest rate uncertainties (and possiblyinvolving liquidity constraints). Approximate numerical solutions areprovided and compared with certainty-equivalent solutions and, whenpossible, with exact solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008634709790
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  • 7
    Electronic Resource
    Electronic Resource
    Surface properties of commercial polymer films following various gas plasma treatments (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 43 (1991), S. 1589-1591 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Surface properties of a number of commercial thermoplastic polymer films were investigated before and after brief exposures to RF induced, low temperature gas plasmas. Water wettability and adhesion of vapor deposited aluminum to thin films (8-12 micron) of polyethylene, polypropylene, polyester, polysulfone, polycarbonate, and polyvinylidene fluoride films were studied before and after treatments with oxygen, 96% CF4/4% O2, and helium plasmas. Treatment with oxygen plasmas showed the greatest change in water wettability for polyvinylidene fluoride and polypropylene films, while treatment with 96% CF4/4% O2 showed dramatic changes in wettability of polycarbonate, polysulfone, and polystyrene. Excellent adhesion of aluminium was found for polymers that had been previously exposed to gas plasmas.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1991.070430901
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  • 8
    Electronic Resource
    Electronic Resource
    Improvements in aluminum adhesion and breakdown voltages of polyvinylidene fluoride films following exposure to gas plasmas (1991)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 2 (1991), S. 209-210 
    Details
    ISSN: 1042-7147
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Changes in water wettability, improvement in adhesion of vapor deposited aluminum and increases in dielectric breakdown voltage in thin, 12 micron PVDF films were observed following brief exposure of these films to low-temperature gas plasmas.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1991.220020407
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  • 9
    Electronic Resource
    Electronic Resource
    Proxiphomin und Protophomin, zwei neue Cytochalasane (1973)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 56 (1973), S. 2387-2396 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Two new cytochalasans, proxiphomin and protophomin have been isolated from cultures of a Phoma species (strain S 298). They are shown to possess the same skeleton as deoxaphomin (4), which has been isolated recently. Thus they represent lower states of oxidation of 4. On the basis of the spectral data, the structures 16-methyl-10-phenyl-[13]cytochalasa-6 (7), 13t,21t-triene-1,23-dione (1) and 16-methyl-10-phenyl-[13]cytochalasa-5 (6)13t,21t-triene-1,7,23-trione (2) are proposed for proxiphomin and protophomin respectively. On treatment with perchloric acid, substance 1 is isomerized to give 16-methyl-10-phenyl-10-pheny-10-phenyl-[13]cytochalasa-5(6)13t,21t-triene-1,23-dione (3). The assumption that the [13]cytochalasans are potential biogenetic precursors of the 24-oxa-[14]catochalasans is discussed.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19730560722
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  • 10
    Electronic Resource
    Electronic Resource
    13C-NMR. Spectra of Natural and Semi-synthetic Cannabinoids (1982)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 65 (1982), S. 807-811 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 13C-NMR. spectra of one natural and ten semi-synthetic cannabinoids were analyzed in detail. Assignments of the signals are based on their chemical shifts, splitting patterns in 1H-off-resonance decoupling experiments and comparison with 13C-NMR. data of related cannabinoids. With some compounds final assignments were made by selective 1H-decoupling experiments and incremental calculations.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19820650318
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