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    Wyświetlanie 1-7 z 7
    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:
    Calculation of Clothing Insulation by Serial and Parallel Methods: Effects on Clothing Choice by IREQ and Thermal Responses in the Cold
    Autorzy:
    Kuklane, K.
    Gao, C.
    Holmer, I.
    Giedraityte, L.
    Brode, P.
    Candas, V.
    Hartog den, E.
    Meinander, H.
    Richards, M.
    Havenith, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/90632.pdf
    Data publikacji:
    2007
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    cold protective clothing
    insulation
    IREQ
    serial
    parallel
    calculation method
    Opis:
    Cold protective clothing was studied in 2 European Union projects. The objectives were (a) to examine different insulation calculation methods as measured on a manikin (serial or parallel), for the prediction of cold stress (IREQ); (b) to consider the effects of cold protective clothing on metabolic rate; (c) to evaluate the movement and wind correction of clothing insulation values. Tests were carried out on 8 subjects. The results showed the possibility of incorporating the effect of increases in metabolic rate values due to thick cold protective clothing into the IREQ model. Using the higher thermal insulation value from the serial method in the IREQ prediction, would lead to unacceptable cooling of the users. Thus, only the parallel insulation calculation method in EN 342:2004 should be used. The wind and motion correction equation (No. 2) gave realistic values for total resultant insulation; dynamic testing according to EN 342:2004 may be omitted.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2007, 13, 2; 103-116
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal comfort measurements in the Energis building
    Badania komfortu cieplnego w budynku Energis
    Autorzy:
    Białek, Anita
    Koltuk, Bade
    Powiązania:
    https://bibliotekanauki.pl/articles/2055091.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
    Tematy:
    indoor air quality
    thermal comfort
    thermal responses
    jakość powietrza wewnętrznego
    komfort cieplny
    odczucia cieplne
    Opis:
    In the paper the measurements of thermal comfort in the modern smart building “Energis” have been presented together with their analysis. The data have been obtained in the spring and the analyses of indoor air parameters as well as subjective responses of the volunteers have been conducted. Based on the performed studies it has been concluded that the people felt fine in the considered room (pleasantly warm, cool and comfortable) and described their feelings as acceptable and comfortable.
    W artykule przedstawiono wyniki badań i analizę komfortu cieplnego w budynku inteligentnym „Energis”. Dane eksperymentalne uzyskano w okresie wiosennym, a analiza dotyczyła parametrów powietrza wewnętrznego, jak również subiektywnych odczuć ochotników. W oparciu o przeprowadzone badania można stwierdzić, że użytkownicy czuli się dobrze w rozpatrywanym pomieszczeniu (przyjemnie ciepło i chłodno, a także komfortowo) i ocenili swoje odczucia jako akceptowalne i komfortowe.
    Źródło:
    Structure and Environment; 2021, 13, 1; 10--15
    2081-1500
    Pojawia się w:
    Structure and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigating the thermal and structural responses in hard-facing application with the GTAW process
    Autorzy:
    Savaş, Atilla
    Powiązania:
    https://bibliotekanauki.pl/articles/1839673.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    hard-facing
    moving heat source
    two-way coupling
    gas tungsten arc welding (GTAW)
    FEM
    Opis:
    The gas tungsten arc welding (GTAW) process is an excellent way of performing quality hard- -facing applications. The residual stresses and distortions are encountered in hard-facing. There are several methods to decrease residual stresses. Changing the welding pattern, changing thickness and preheating can be mentioned for this purpose. In this work, the influence of the welding pattern, plate thickness and preheating was investigated. The temperature distribution with the same welding conditions was used for validation of the numerical model. The total deformation in a 2mm plate was 15 times higher than in a 6mm plate with the same welding conditions.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2021, 59, 3; 343-353
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Transcriptomic responses of cauliflower (Brassica oleracea var. botrytis) mitochondria under thermal stress
    Autorzy:
    Rurek, M.
    Nowak, W.
    Krzesinski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/80965.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    cauliflower
    Brassica oleracea var.botrytis
    mitochondrion
    thermal stress
    mitochondrial protein
    transcriptomics
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermomechanical responses of functionally graded cylinders
    Autorzy:
    Eker, Mehmet
    Yarımpabuç, Durmuş
    Powiązania:
    https://bibliotekanauki.pl/articles/2175500.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    functionally graded materials
    hollow cylinder
    pseudospectral Chebyshev method
    thermal stress
    funkcjonalne materiały gradientowe
    pusty cylinder
    pseudospektralna metoda Czebyszewa
    naprężenia termiczne
    Opis:
    In this study, thermal and mechanical stresses in hollow thick-walled functionally graded (FG) cylinders is presented under the convection boundary condition. The convective external condition and constant internal temperature in hollow cylinders are investigated. Inhomogeneous material properties produce irregular and two-point linear boundary value problems that are solved numerically by the pseudospectral Chebyshev method. The displacement and thermal stress distributions are examined for two different material couples under particular boundary conditions that are similar to their real engineering applications.Results have demonstrated that the pseudospectral Chebyshev method has low computation costs, high accuracy and ease of implementation and can be easily customized to such engineering problems.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2021, 20, 4; 19--28
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Different Ignition Responses of Powdery and Bulky 1,3,5-Triamino-2,4,6-trinitrobenzene (TATB) Based Polymer-bonded Explosives under Ultra-high Voltage Electrostatic Discharge
    Autorzy:
    Lyu, Z.
    Long, X.
    Li, Z.
    Dai, X.
    Deng, C.
    He, S.
    Li, M.
    Yao, K.
    Wen, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/358240.pdf
    Data publikacji:
    2018
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    electrostatic spark sensitivity
    ultra-high voltage electrostatic discharge
    thermal effect
    electric field effect
    Opis:
    The electric spark induced ignition mechanism for explosives needs further study. The ignition of powdery and bulky TATB by electrostatic discharge (ESD) was investigated. Up to 200 kV ultra-high voltage ESD was applied to powdery and bulky explosives of two TATB-based polymer-bonded explosives (named PBX-1 and PBX-2). The results showed that the spark sensitivities of powdery and bulky explosives are extremely different for the same formulation. The 50% ignition voltages of powdery PBX-1 and PBX-2 were 10.8 kV and 8.5 kV, respectively, while the values for the bulky samples (tablets) were not less than 200 kV. Both heat and the electric field can be transmitted into the powdery samples, on the other hand only the electric field can be transmitted into the bulk samples. The electric field has a smaller contribution while the heat has a larger contribution to the ignition during an ESD, i.e., the thermal effect plays a main role in the ignition process. Our experimental results are in good agreement with recent results calculated by density functional theory.
    Źródło:
    Central European Journal of Energetic Materials; 2018, 15, 2; 283-298
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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