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    Wyświetlanie 1-5 z 5
    Tytuł:
    Effect of Footwear Insulation on Thermal Responses in the Cold
    Autorzy:
    Kuklane, K.
    Geng, Q
    Holmer, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/89772.pdf
    Data publikacji:
    1998
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    cold
    insulation of footwear
    foot skin temperature
    thermal sensation
    zimno
    obuwie zimowe
    ochrona przed zimnem
    izolacja termiczna
    Opis:
    The influence of footwear insulation on foot skin temperature in the cold at low activity was investigated. Simultaneously, the thermal and pain sensations, and the influence of steel toe cap were studied. Eight participants were exposed for 85 min to 3 environmental temperatures ( + 3, — 12, and —25°C) wearing 5 different boots. Insulation of footwear was determined with a thermal foot model. The study showed the importance of insulation forkeeping feet warm. Other factors, such as wetness and vasomotor response, however, modified the thermal response. The most affected parts were toes and heels. Cold and pain sensations were connected with considerably lower temperatures in these local points. No significant differences were observed between boots with and without steel toe cap.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 1998, 4, 2; 137-152
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Manikin Measurements - Exact or Not?
    Autorzy:
    Anttonen, H.
    Niskanen, J.
    Meinander, H.
    Bartels, V.
    Kuklane, K.
    Reinertsen, R. E.
    Varieras, S.
    Sołtyński, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/90301.pdf
    Data publikacji:
    2004
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    protective clothing
    thermal insulation
    cold protection
    calculation method
    izolacja cieplna
    odzież ochronna
    środowisko cieplne
    ochrona przed zimnem
    manekin termiczny
    Opis:
    According to the European prestandard ENV 342:1998 [1], the thermal insulation of cold-protective clothing is measured with a thermal manikin. Systematic studies on the reproducibility of the values, measured with different types of clothing on the commonly used standing and walking manikins, have not been reported in the literature. Over 300 measurements were done in 8 different European laboratories. The reproducibility of the thermal insulation test results was good. The coefficient of variation was lower than 8%. The measured clothing should fit the manikin precisely, because poorly fitting clothing gave an error in the results. The correlation between parallel and serial insulation values was excellent and parallel values were about 20% lower than serial ones. The influence of ambient conditions was critical only in the case of air velocity. The reproducibility of thermal insulation test results in a single laboratory was good, and the variation was lower than 3%.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2004, 10, 3; 291-300
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Sweating on Insulation of Footwear
    Autorzy:
    Kuklane, K.
    Holmer, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/90320.pdf
    Data publikacji:
    1998
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    sweating
    thermal foot model
    insulation of footwear
    cold protection
    safety shoes
    steel toe cap
    obuwie ochronne
    ochrona przed zimnem
    testowanie obuwia
    Opis:
    The study aimed to find out the influence of sweating on footwear insulation with a thermal foot model. Simultaneously, the influence of applied weight (35 kg), sock, and steel toe cap were studied. Water to 3 sweat glands wassupplied with a pump at the rate of 10 g/hr in total. Four models of boots with steel toe caps were tested. The same models were manufactured also without steel toe. Sweating reduced footwear insulation 19-25% (30-37% in toes). During static conditions, only a minimal amount of sweat evaporated from boots. Weight affected sole insulation: Reduction depended on compressibility of sole material. The influence of steel toe varied with insulation. The method of thermal foot model appears to be a practical tool for footwear evaluation.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 1998, 4, 2; 123-136
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Sweating on the Heat Transmission Properties of Cold Protective Clothing Studied With a Sweating Thermal Manikin
    Autorzy:
    Meinander, H.
    Hellsten, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/90642.pdf
    Data publikacji:
    2004
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    protective clothing
    cold protection
    thermal manikin
    sweating
    odzież ochronna
    tkaniny na odzież ochronną
    środki ochrony indywidualnej
    środowisko cieplne
    wilgotność
    ochrona przed zimnem
    manekin termiczny
    Opis:
    One of the objectives of the European SUBZERO project was to study the influence of sweat evaporation and condensation on the heat transmission properties of cold protective clothing. With the sweating thermal manikin Coppelius, water vapour transfer through and water condensation in the clothing can be determined simultaneously with the thermal insulation. In this study, 4 cold protective ensembles, intended for use temperatures between 0 and -50 °C, were measured with the dry manikin and at 2 different sweating rates. In addition, the ensembles were measured with non-sweating thermal manikins and in wear trials.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2004, 10, 3; 263-269
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Use of Footwear Insulation Values Measured on a Thermal Foot Model
    Autorzy:
    Kuklane, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/90535.pdf
    Data publikacji:
    2004
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    thermal foot model
    cold protective footwear
    thermal insulation
    cold exposure limit
    thermal sensation
    pain sensation
    obuwie ochronne
    ochrony nóg
    izolacja cieplna
    ochrona przed zimnem
    zimno
    Opis:
    The use of physiological data from human tests in modelling should consider background data, such as activity, environmental factors and clothing insulation on the whole body. The present paper focuses on local thermal comfort of feet with special attention on the effects of physical changes of footwear thermal properties. An alternative test method is available for footwear thermal testing besides the standard method. The possibility to use insulation values acquired on a thermal foot model in practice is shown here. The paper describes the correlation between cold and pain sensations, and foot skin temperatures of the subjects and relates these to insulation measured on a thermal foot model. Recommendations are made for footwear choice according to environmental temperature.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2004, 10, 1; 79-86
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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