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  • 1
    Publication Date: 2019-05-24
    Description: Large amplitude forced vibrations of buckled beams and rectangular plates about static buckled positions
    Keywords: STRUCTURAL MECHANICS
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  • 2
    Publication Date: 2019-06-27
    Description: Cable-connected spinning and orbiting satellite spring-mass system, deriving in-plane motion equations by Hamilton principle for numerical analysis
    Keywords: SPACE VEHICLES
    Type: ; ADEMIE DES SCIENCES
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  • 3
    Publication Date: 2019-06-27
    Description: Equations of motion of elastic dumbbell satellite and two-mass spring-connected satellite in orbit, using energy and Floquet theory to investigate spinning motion stability
    Keywords: SPACE SCIENCES
    Type: ; ADEMIE DES SCIENCES
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Medical & biological engineering & computing 17 (1979), S. 311-315 
    ISSN: 1741-0444
    Keywords: Heat transfer ; Skin ; Subcutaneous tissues ; Unsteady state ; Water migration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract An analytical model is developed to predict temperature variations in regional skin and subcutaneous tissues and the resulting heat and water losses in response to the changing environments. Consideration is given to heat conduction, molecular diffusion of water, capillary blood circulation, metabolic heat and water production, insensible perspiration, sweat secretion, and heat and water exchange with the environment through convection, radiation and evaporation. The resulting skin temperature and heat and water losses in the new environment are in good agreement with previous findings in the steady state. The effect of temperature change ΔT, the difference in final and initial temperatures, and relative humidity on time required to reach a new steady state are also studied. The time required to reach a new steady state increases sharply at small ΔT and then tapers off as ΔT increases. A relative humidity of 40% is found most desirable for human body to adjust to the new environment.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Medical & biological engineering & computing 17 (1979), S. 301-310 
    ISSN: 1741-0444
    Keywords: Heat transfer ; Skin ; Steady state ; Subcutaneous tissues ; Water migration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A thermal modelling technique is employed to determine temperature distributions in regional skin and subcutaneous tissues, and the resulting heat and water losses to the environment. Physical and physiological factors are taken into account, including heat conduction, molecular diffusion of water, capillary blood circulation, metabolic heat and water generation, insensible perspiration, sweat secretion and heat and water exchange with the environment through convection, radiation and evaporation. The results from analytical modelling are measured againstin vivo test data in the steady state from normal skin over an environmental temperature range from 20°C to 50°C with relative humidity of 40%. The effect of humidity on skin temperature and heat and water losses are studied. A relative humidity of 40% is found most desirable at high ambient temperatures. At low and moderate ambient temperature, a change in relative humidity does not produce any significant effect. The results of these findings agree well with experimental data.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Medical & biological engineering & computing 15 (1977), S. 598-603 
    ISSN: 1741-0444
    Keywords: Burns ; Heat loss ; Water loss
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Une technique de modelage thermique qui permet de prévoir les distributions de température et les pertes de chaleur et d'eau qui résultent pour la peau de brûlures de degrés divers. On tient compte de la diffusion moléculaire de la chaleur et de l'eau de la circulation sanguine capillaire, de la production de chaleur et d'eau par le métabolisme et de l'échange de chaleur et d'eau avec le milieu ambiant accompli par convection, radiation et évaporation. L'effet pathologique de la brûlure est également inclus (modification des propriétés de diffusion des masses). On obtient des résultats numériques correspondant aux pertes d'eau variant selon les divers degrés de brûlures ainsi qu'un diagramme de température pour l'endroit brûlé. Les résultats des découvertes ci-dessus concordent avec les données expérimentales.
    Abstract: Zusammenfassung Mit der Hilfe eines Wärmemodellverfahrens werden die Temperaturverteilung und die sich daraus ergebenden Wärme- und Wasserverluste aus Haut mit verschieden schweren Verbrennungen an die Umgebung vorausgesagt. Auch die Molekulardiffusion von Wärme und Wasser, der Kapillarblutkreislauf, Umsatzärme und Wasserentstehung, sowie leitungs-, strahlungs- und verdampfungsbedingter Wärme- und Wasseraustausch mit der Umgebung werden in Betracht gezogen. Die pathologische Wirkung von Verbrennungen in der Änderung der Massenwärmeleitfähigkeit wird ebenfalls herangezogen. Zahlenangaben für den Wasserverlust bei verschieden schweren Verbrennungen und das Temperaturprofil der Verbrennungsstelle werden ebenfalls angeführt. Die Ergebnisse dieses Modellverfahrens stimmen mit experimentellen Daten überein.
    Notes: Abstract A thermal-modelling technique is employed to predict temperature distributions and the resulting heat and water losses from skin with various degrees of burn to the environment. Consideration is given to molecular diffusion of heat and water, capillary blood circulation, metabolic heat and water generation, and heat and water exchange with the environment through convection, radiation and evaporation. The pathological effect of burn is included by changing mass diffusivity. Numerical results for water losses for various degrees of burn are obtained, together with temperature profile at the burn site. The results of above findings agree with experimental data.
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