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  • 1
    Digitale Medien
    Digitale Medien
    CGRP Modulates Nerve-Mediated Vasoconstriction of Rat Knee Joint Blood Vessels (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 657 (1992), S. 0 
    Details
    ISSN: 1749-6632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1749-6632.1992.tb22820.x
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Uncorrelated component analysis for blind source separation (1999)
    Springer
    Circuits, systems and signal processing 18 (1999), S. 225-239 
    Details
    ISSN: 1531-5878
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract The uncorrelated component analysis (UCA) of a stationary random vector process consists of searching for a linear transformation that minimizes the temporal correlation between its components. Through a general analysis we show that under practically reasonable and mild conditions UCA is a solution for blind source separation. The theorems proposed in this paper for UCA provide useful insights for developing practical algorithms. UCA explores the temporal information of the signals, whereas independent component analysis (ICA) explores the spatial information; thus UCA can be applied for source separation in some cases where ICA cannot. For blind source separation, combining ICA and UCA may give improved performance because more information can be utilized. The concept of single UCA (SUCA) is also proposed, which leads to sequential source separation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01225696
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  • 3
    Digitale Medien
    Digitale Medien
    Microcomputer-assisted surface area determination
    Amsterdam : Elsevier
    Computers and Chemistry 11 (1987), S. 97-108 
    Details
    ISSN: 0097-8485
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0097-8485(87)80028-1
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Asymmetric induction from pyrolyses of S (+) and R (-) trans-4-methylcyclohexyl hydratropate
    Amsterdam : Elsevier
    Tetrahedron Letters 5 (1964), S. 1893-1896 
    Details
    ISSN: 0040-4039
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0040-4039(00)75124-0
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Pulse compression techniques in ultrasonic non-destructive testing
    Amsterdam : Elsevier
    Ultrasonics 14 (1976), S. 111-114 
    Details
    ISSN: 0041-624X
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Physik
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0041-624X(76)90083-4
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Effects of atropellis canker and stalactiform blister rust on the bending strength and stiffness of lodgepole pine lumber (1990)
    Springer
    Wood science and technology 24 (1990), S. 225-232 
    Details
    ISSN: 1432-5225
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Maschinenbau
    Notizen: Summary This study investigated the effect of Atropellis canker,Atropellis piniphila (Weir) Lohman and Cash, and stalactiform blister rust,Cronartium coleosporioides Arth., on the bending strength and stiffness of lumber from lodgepole pine,Pinus contorta Dougl. var.latifolia Engelm. The modulus of rupture, was unaffected by either disease. However, the modulus of elasticity (MOE) of lumber from infected trees, as determined by the Cook Bolinders and static bending tests, was significantly reduced from those of healthy trees. This impact should affect the use of lumber from infected trees when serviceability criteria govern the design of a structure. Should MOE-based, machine stress-rating of lumber become standard in the future, there may be an adverse, stress-related impact of these diseases on lumber value.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01153556
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  • 7
    Digitale Medien
    Digitale Medien
    Incorporating size effects in the Tsai-Wu strength theory for Douglas-fir laminated veneer (1998)
    Springer
    Wood science and technology 32 (1998), S. 215-226 
    Details
    ISSN: 1432-5225
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Maschinenbau
    Notizen: Summary This paper elucidates the need to consider the effect of volume on brittle material strengths when these strengths are used in a strength theory. Specifically, Weibull weakest-link theory has been implemented with the Tsai-Wu strength theory to predict the ultimate load carrying capacity of a center point off-axis bending member made from Douglas-fir laminated veneer. Weibull theory has been used in two distinct ways to account for size effects needed to evaluate brittle material strengths (ie. tension perpendicular and parallel to grain, and shear) for the strength criterion. The analytical methods assume linear elastic, plane stress states and have been described and evaluated using probability theory as a framework. Analytical results are in reasonable agreement with experimental findings substantiating the techniques proposed herein.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00704844
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  • 8
    Digitale Medien
    Digitale Medien
    A continuum model of the interaction between manufacturing variables and consolidation of wood composite mats (1998)
    Springer
    Wood science and technology 32 (1998), S. 381-391 
    Details
    ISSN: 1432-5225
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Maschinenbau
    Notizen: Abstract Wood composites produced using aspen flakes have displayed interaction between manufacturing variables and stress-strain consolidation of these mats. This study brings an original approach to the process of wood composites within the analytical nonlinear continuum mechanics based model, developed to predict the consolidation of wood mats during part of the hot-pressing cycle. Consolidation of wood flake mats occurred principally during the closing of the press when the loose mat underwent uniaxial compression along its perpendicular direction. Forming parameters such as mat thickness, and pressing parameters such as press closing rate, were accounted for in a combined viscoelastic model with creep. The stress-strain consolidation model was applied to different formed mat structures using random and oriented layout of flakes, and although slightly higher values were obtained with the model regarding the viscoelastic behavior of the loose mat, the creep model showed a very good agreement with the experience data. These results within a continuum approach, are significant in the manufacturing of wood composites as they would enable optimization of manufacturing processes by integrating the specific conditions of the forming process of wood mats into the pressing strategy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00702795
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  • 9
    Digitale Medien
    Digitale Medien
    Variation of tensile strength along the length of lumber (1991)
    Springer
    Wood science and technology 25 (1991), S. 351-359 
    Details
    ISSN: 1432-5225
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Maschinenbau
    Notizen: Summary The within member variation of tensile strength parallel to grain in nominal 38×89 mm No. 2 Spruce-Pine-Fir lumber has been experimentally evaluated. Window analyses yielded the within member tensile strength cumulative probability distributions of lumber segments with various lengths. Semivariogram and regression analyses have been performed to characterize the spatial correlation of the tensile strength of lumber. The results indicate that the tensile strength values within a piece of lumber separated by a distance greater than 1.83 m can be considered statistically independent.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00226174
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  • 10
    Digitale Medien
    Digitale Medien
    Variation of tensile strength along the length of lumber (1991)
    Springer
    Wood science and technology 25 (1991), S. 449-458 
    Details
    ISSN: 1432-5225
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Maschinenbau
    Notizen: Summary A model has been developed for the within member variation of tensile strengths parallel to grain in nominal 38 × 89 mm No. 2 Spruce-Pine-Fir lumber. Tensile strength data from two modulus of elasticity matched groups were considered. Model parameters obtained from data group 1 were used to generate tensile strength profiles of lumber 6.10 m long. Within member tensile strength cumulative probability distributions of the simulated data were evaluated by window analyses. The spatial correlation of the simulated data were evaluated by semivariogram and regression analyses. Good agreement was obtained between model predictions and test results of both groups.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00225237
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