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  • 1
    Electronic Resource
    Electronic Resource
    A new approach to analysis of human sweating (1996)
    Springer
    Cellular and molecular life sciences 52 (1996), S. 131-135 
    Details
    ISSN: 1420-9071
    Keywords: Human skin ; heterologous transplant ; immuno-deficient mouse ; eccrine seating ; pilocarpine ; adrenaline ; atropine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract In human skin transplanted to the back of 3 strains of immuno-deficient mice the functin of the eccrine sweat glands of the human transplant was tested by topical intradermal application of pilocarine, adrenaline and atropine+pilocarpine. Sweat responses were observed in pre-selected fields of observation by means of video macroscope. The iodine strarch reaction served as an indicator for the appearance of seat sport and permitted the evaluation of areas wetted by sweat in the field of observation. Among 9 animals tested, the hybrids between the CB-17-scid mouse and the BALB/cA-nu mouse (BALB/cA-nu,scid) seemed to exhibit the most consistent seweating response to local pharmacological stimulation. According to histological examination, eccrine sweat glands were preserved in human skin trasplanted into the back skin of the BALB/cA-nu,scid mouse strain. the heterologous, human skin graft provides a novel model permitting, independent of the normal sweat gland innervation, the analysis of moecular receptors of sweat gland cells by which the actions of natural transmitters and pharmacological agents are transduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01923357
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A study on optimal motion of a biped locomotion machine (1999)
    Springer
    Artificial life and robotics 3 (1999), S. 55-60 
    Details
    ISSN: 1614-7456
    Keywords: Biped locomotion ; Optimal motion ; Inverse kinematics ; Inverse dynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract In this paper we propose a calculation method for the optimal trajectory of a biped locomotion machine which is based on inverse kinematics and inverse dynamics. First, the trajectory of the waist is expressed by a Fourier series, where the bases are selected appropriately so that the periodic boundary conditions are strictly satisfied. A biped locomotion machine establishes optimal walking by using kicking forces to the ground at the moment of switching legs. In order to include the effecs of the kicking forces, additional terms that indicate the impulsive forces at the moment of switching legs are included in the formulation. Then the angles of each joint are determined by inverse kinematics, and using inverse dynamics, the input torques of each joint are expressed in terms of Fourier coefficients. By defining the performance index as a quadratic form of the input torques, the motion planning problem is formulated as an optimization problem of the trajectory of the waist, whose paramaters are Fourier coefficients of the trajactory of the waist. Using the successive quadratic programming (SQP) method, the optimal trajectory of a biped locomotion machine is obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02481247
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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