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Wyszukujesz frazę "Takahashi, D." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Effect of Urethane Foam Cushioning on Structure-Borne Sound Transfer by a Slab with Panel Flooring
    Autorzy:
    Mu, R.
    Toyoda, M.
    Takahashi, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/176817.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    urethane foam
    direct pasted flooring
    floor impact sound
    sound pressure level
    sound insulation performance
    Opis:
    Urethane foam mattresses are commonly used as cushioning when placing panel flooring on the floor slab of a building. Urethane foam consists of elastic fibres with pores. Both elements can affect the performance of the insulation against impact sounds. However, these effects have not yet been detailed, and they may change if the material properties or constitution of the fibres and pores in the cushioning change. In this paper, we propose an analytical model for use in evaluating the performance of insulation against floor impact sound. This model was used to examine the contribution of the pores versus the elastic fibres to wave transmissions from the flooring surface to the slab. The results reveal that the constitution of the foam (either open or closed cells of pores) and the thickness and hardness of the cushion layer strongly affect the sound insulation performance of the floor.
    Źródło:
    Archives of Acoustics; 2016, 41, 1; 99-106
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Percutaneous Exposure Incidents Among Australian Hospital Staff
    Autorzy:
    Smith, D. R.
    Leggat, P. A.
    Takahashi, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/90789.pdf
    Data publikacji:
    2005
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    Percutaneous Exposure Incident
    needlestick
    sharps
    health care workers
    Australia
    hospital
    universal precautions
    nurse
    doctor
    Hepatitis B
    pielęgniarka przemysłowa
    szpitale
    wypadki przy pracy
    warunki pracy
    czynniki ryzyka
    personel pielęgniarski
    Opis:
    We investigated all reported percutaneous exposure incidents (PEI) among staff from a large Australian hospital in the 3-year period, 2001–2003. There were a total of 373 PEI, of which 38.9% were needlestick injuries, 32.7% were cutaneous exposures and 28.4% sharps-related injuries. Nurses were the most commonly affected staff members, accounting for 63.5% of the total, followed by doctors (18.8%) and other staff (17.7%). Needlestick injuries were responsible for the majority of nurses’ PEI (44.7%). Sharps injuries constituted the major category for doctors (44.3%). Most needlestick injuries (67.6%) were caused by hollow-bore needles, while the majority of cutaneous exposures involved blood or serum (55.8%). Most sharps injures were caused by unknown devices (35.9%) or suture needles (34.9%). Overall, our investigation suggests that PEI is a considerable burden for health care workers in Australia. Further research is now required to determine the relationships, if any, between workers who suffer PEI and those who do not.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2005, 11, 3; 323-330
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recent Trends in ILO Conventions Related to Occupational Safety and Health
    Autorzy:
    Wilson, D. J.
    Takahashi, K.
    Smith, D. R.
    Yoshino, M.
    Tanaka, C.
    Takala, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/90843.pdf
    Data publikacji:
    2006
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    International Labour Organization
    convention
    ratification
    occupational safety and health
    prawo pracy
    prawo
    umowy międzynarodowe
    bezpieczeństwo i higiena pracy
    Międzynarodowa Organizacja Pracy
    Międzynarodowe Biuro Pracy
    konwencja
    ratyfikacja
    Opis:
    The present study was conducted to analyze the ratification status of International Labour Organization (ILO) conventions related to occupational safety and health (OSH) by ILO member states in terms of national indicators (length of ILO membership and national income status) and regional affiliation. 17 conventions designated as OSH-related by the 2003 International Labour Conference were examined. In general, countries with longer ILO membership ratified higher numbers of conventions related to OSH. With some variation, long-membership countries had the largest number of ratifications, followed by middle- and shortmembership countries in all regions. There were also incremental increases in the number of ratifications for OSH-related conventions according to the national income status. Common regional characteristics that could not be explained by the factors studied also existed. Future efforts to increase ratification at an international level will need to consider the factors influencing ratification practice among the member states.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2006, 12, 3; 255-266
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of environmental and human impacts of using Strong Alkaline Water for cooling during machining
    Autorzy:
    Da Silva, P.
    Tanabe, I.
    Junior, D. C. R.
    Takahashi, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/99481.pdf
    Data publikacji:
    2018
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    eco-friendly
    strong alkaline water
    emission
    cooling
    Opis:
    An eco-friendly manufacturing approach is important for the environment. Enhancing machining performances is not only required to improve product’s quality, time saving, and reduces costs; it is also contributed to the environmental protection efforts. Cooling is important aspect for obtaining this purpose. Therefore the benefits of Strong Alkaline Water (SAW) cooling method was assessed and compared with conventional wet cutting method. An experiment was performed at Nagaoka University of Technology machining centre. Three machine tools including a milling machine, a drilling machine and a turning machine were used. The study shows that using SAW for cooling is far more efficient than conventional cooling method. It reduces annual global warming potential by 72.95%, acidification potential 98.18%, ozone depletion potential 99.6%, smog formation potential 85.71% and human toxicity potential 42.86% compare with conventional method. The study concludes that besides inhibiting corrosion, prolonging tool life, improving surface roughness of final cutting and reducing energy usage, strong alkaline water cooling is an environmentally friendly approach and has positive impact on human health.
    Źródło:
    Journal of Machine Engineering; 2018, 18, 1; 45-60
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    3-D optimal design of laminated yoke of billet heater for rolling wire rod using ON/OFF method
    Autorzy:
    Takahashi, N.
    Nakazaki, S.
    Miyagi, D.
    Uchida, N.
    Kawanaka, K.
    Namba, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/140616.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metoda stopniowa
    problem prądów wirowych
    metoda ON/OFF
    ON/OFF method
    step-by-step method
    eddy current problem
    billet heater
    Opis:
    The optimization method using the ON/OFF sensitivity analysis has an advantage hat an epoch-making construction of magnetic circuit may be obtained. Therefore, it is attractive for designers of magnetic devices. We have already developed the ON/OFF method for the optimization of a static magnetic field problem, and the effectiveness is verified by applying it to the optimization of magnetic recording heads. In this paper, the ON/OFF sensitivity method is extended to the optimization of the eddy current problem using the adjoint variable. The newly developed ON/OFF method is applied to the determination of the optimal topology of the yoke of the billet heater for rolling wire rod. As a result, the optimal shape of yoke, which we could not imagine beforehand can be obtained. It is shown that the local heating of the yoke was reduced without decreasing the heating efficiency.
    Źródło:
    Archives of Electrical Engineering; 2012, 61, 1; 115-123
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Pattern Fabrication in Amorphous Silicon Carbide with High-Energy Focused Ion Beams
    Autorzy:
    Tsvetkova, T.
    Takahashi, S.
    Sellin, P.
    Gomez-Morilla, I.
    Angelov, O.
    Dimova-Malinovska, D.
    Zuk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1503892.pdf
    Data publikacji:
    2011-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    41.75.Ak
    42.70.Ln
    68.37.Uv
    73.61.Jc
    Opis:
    Topographic and optical patterns have been fabricated in a-SiC films with a focused high-energy (1 MeV) $H^{+}$ and $He^{+}$ ion beam and examined with near-field techniques. The patterns have been characterized with atomic force microscopy and scanning near-field optical microscopy to reveal local topography and optical absorption changes as a result of the focused high-energy ion beam induced modification. Apart of a considerable thickness change (thinning tendency), which has been observed in the ion-irradiated areas, the near-field measurements confirm increases of optical absorption in these areas. Although the size of the fabricated optical patterns is in the micron-scale, the present development of the technique allows in principle writing optical patterns up to the nanoscale (several tens of nanometers). The observed values of the optical contrast modulation are sufficient to justify the efficiency of the method for optical data recording using high-energy focused ion beams.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 1; 56-59
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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