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    Wyświetlanie 1-9 z 9
    Tytuł:
    Performance of Firefighters’ Protective Clothing After Heat Exposure
    Autorzy:
    Rossi, R. M.
    Bolli, W.
    Stampfli, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/89696.pdf
    Data publikacji:
    2008
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    heat protective clothing
    thermal ageing
    mechanical resistance
    heat protection
    Opis:
    Heat and mechanical protection properties of 6 fabric combinations commonly used in firefighters’ protective clothing were assessed before and after different heat treatment. It was shown that after heat exposure, the values obtained were generally lower than in the original state. The mechanical properties of the materials were more affected by heat than by heat protective properties. In 2 cases, degradation started before a visible change in the material could be observed, which might be potentially dangerous for the end user who will not realize the alteration of the material.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2008, 14, 1; 55-60
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occupational Exposure to Physical Agents: The New Italian Database for Risk Assessment and Control
    Autorzy:
    Nataletti, P.
    Bogi, A.
    Borra, M.
    Gioia, D.
    Falsaperla, R.
    Marchetti, E.
    Militello, A.
    Nicolini, O.
    Rossi, P.
    Sacco, F.
    Stacchini, N.
    Pinto, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/90903.pdf
    Data publikacji:
    2014
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    noise
    vibration
    electromagnetic fields
    artificial optical radiation
    risk assessment
    database of physical agents
    hałas
    pola elektromagnetyczne
    promieniowanie optyczne
    ocena ryzyka
    Opis:
    This article presents the new Italian database of physical agents, which is available at http://www.portaleagentifisici.it. It supports in risk assessment employers who have to comply with Italy’s Legislative Decree 81/2008 (transposing into law European Union Directives 2003/10/EC, 2002/44/EC, 2004/40/EC and 2006/25/EC). The database currently contains measurements and declared European Community (EC) values from over 2540 machines; in particular, the database hosts data on mechanical vibration from over 1430 hand-held power tools (e.g., pneumatic and electric hammers, chainsaws, grinders, drills, sanders and saws) and from over 1020 whole-body machines (e.g., buses, fork lifts and wheel tractors). The database is continuously updated as soon as new experimental and declared data are acquired.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2014, 20, 3; 407-420
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical components dynamic characterization using thermoelastic stress analysis and digital image correlation
    Autorzy:
    Marsili, R.
    Rossi, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/328501.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    thermoelasticity
    digital image correlation
    speckle
    rubber
    TSA
    DIC
    termosprężystość
    cyfrowa korelacja obrazu
    charakterystyka termomechaniczna
    guma
    Opis:
    In this work the possibility to characterize mechanical components combining thermoelastic measurement technique (TSA) and digital image correlation (DIC) is studied. The combination of these two different methodologies allows to analyze thermo-mechanical characteristics of materials such as plastic and rubber, which are difficult to study with the only thermoelastic methodology. The digital image correlation allows to determinate the first invariant of deformation ε1, using a differential thermocamera. Lack of adiabatic conditions, essential for methodology use, makes analysis not simple. Digital image correlation allows to obtain the same information by correlating digital images acquired during static or dynamic deformationof an object, but with limitations linked to acquisition system. An accurate analysis is dedicated to the study of first invariant of deformation related to Young’s module variation, performed by load cycles with variable amplitude and displacement. Comparative analysis between the two measurement methodologies has been performed on rubber samples loaded by dynamic compression.
    Źródło:
    Diagnostyka; 2018, 19, 1; 3-9
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hot Steam Transfer Through Heat Protective Clothing Layers
    Autorzy:
    Rossi, R.
    Indelicato, E.
    Bolli, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/89886.pdf
    Data publikacji:
    2004
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    hot steam protection
    heat protective clothing
    wilgotność
    odzież ochronna
    mikroklimat
    izolacja cieplna
    tkaniny na odzież ochronną
    Opis:
    The aim of this study was to analyse the transfer of steam through different types of textile layers as a function of sample parameters such as thickness and permeability. In order to simulate the human body, a cylinder releasing defined amounts of moisture was also used. The influence of sweating on heat and mass transfer was assessed. The results show that in general impermeable materials offer better protection against hot steam than semi-permeable ones. The transfer of steam depended on the water vapour permeability of the samples, but also on their thermal insulation and their thickness. Increasing the thickness of the samples with a spacer gave a larger increase in protection with the impermeable samples compared to semi-permeable materials. Measurements with pre-wetted samples showed a reduction in steam protection in any case. On the other hand, the measurements with a sweating cylinder showed a beneficial effect of sweating.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2004, 10, 3; 239-245
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exposure of Workers to Electromagnetic Fields. A Review of Open Questions on Exposure Assessment Techniques
    Autorzy:
    Mild, K. H.
    Alanko, T.
    Decat, G.
    Falsaperla, R.
    Gryz, K.
    Hietanen, M.
    Karpowicz, J.
    Rossi, P.
    Sandstrom, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/91031.pdf
    Data publikacji:
    2009
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    occupational exposure
    exposure assessment
    measurements
    numerical simulations
    safety guidelines
    EU directive
    compliance testing
    medical implants
    health examination
    Opis:
    European Directive 2004/40/EC on occupational exposure to electromagnetic fields (EMF), based on the guidelines of the International Commission on Non-Ionizing Radiation Protection, was to be implemented in the Member States of the European Union by 2008. Because of some unexpected problems the deadline was postponed until 2012. This paper reviews some of the problems identified and presents some suggestions for possible solutions based on the authors’ experience in assessing occupational exposure to EMF. Among the topics discussed are movement in static magnetic fields, ways to time average extreme low frequency signals, the difference between emission and exposure standards, and ways of dealing with those issues.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2009, 15, 1; 3-33
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electromagnetic Fields: Principles of Exposure Mitigation
    Autorzy:
    Falsaperla, R.
    Spagnoli, G.
    Rossi, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/90023.pdf
    Data publikacji:
    2006
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    EMF (electromagnetic fields)
    mitigation
    shielding
    pole elektromagnetyczne
    zagrożenia zdrowia
    ekspozycja
    EMF
    Opis:
    Basic principles of reducing exposure to electromagnetic fields are reviewed in this article. Measures to reduce exposure can be divided into organisational/administrative and technical/engineering actions. Both strategies are briefly analysed and the basic principles of the theory of shielding are presented. A definition of shielding effectiveness (SE) is given, and the results from the general Transmission Lines Theory are presented. Practical situations of shielding static and time-varying electric and magnetic fields are discussed on the basis of the physical properties of the fields and of the shield.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2006, 12, 2; 195-200
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrical resistivity tomography to delineate greenhouse soil variability
    Autorzy:
    Rossi, R.
    Amato, M.
    Bitella, G.
    Bochicchio, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/24838.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Opis:
    Appropriate management of soil spatial variability is an important tool for optimizing farming inputs, with the result of yield increase and reduction of the environmental impact in field crops. Under greenhouses, several factors such as non-uniform irrigation and localized soil compaction can severely affect yield and quality. Additionally, if soil spatial variability is not taken into account, yield deficiencies are often compensated by extra-volumes of crop inputs; as a result, over-irrigation and overfertilization in some parts of the field may occur. Technology for spatially sound management of greenhouse crops is therefore needed to increase yield and quality and to address sustainability. In this experiment, 2D-electrical resistivity tomography was used as an exploratory tool to characterize greenhouse soil variability and its relations to wild rocket yield. Soil resistivity well matched biomass variation (R2=0.70), and was linked to differences in soil bulk density (R2=0.90), and clay content (R2=0.77). Electrical resistivity tomography shows a great potential in horticulture where there is a growing demand of sustainability coupled with the necessity of stabilizing yield and product quality.
    Źródło:
    International Agrophysics; 2013, 27, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dry and Wet Heat Transfer Through Clothing Dependent on the Clothing Properties Under Cold Conditions
    Autorzy:
    Richards, M. G. M.
    Rossi, R.
    Meinander, H.
    Broede, P.
    Candas, V.
    Hartog den, E.
    Holmer, I.
    Nocker, W.
    Havenith, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/90562.pdf
    Data publikacji:
    2008
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    heat transfer
    moisture
    condensation
    wet conduction
    clothing systems
    Opis:
    The purpose of this study was to investigate the effect of moisture on the heat transfer through clothing in relation to the water vapour resistance, type of underwear, location of the moisture and climate. This forms part of the work performed for work package 2 of the European Union THERMPROTECT project. Thermal manikin results of dry and wet heat loss are presented from different laboratories for a range of 2-layer clothing with similar dry insulations but different water vapour permeabilities and absorptive properties. The results obtained from the different manikins are generally consistent with one another. For each climate, total wet heat loss is predominately dependent on the permeability of the outer layer. At 10 °C, the apparent evaporative heat loss is markedly higher than expected from evaporation alone (measured at 34 °C), which is attributed to condensation within the clothing and to increased conductivity of the wet clothing layers.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2008, 14, 1; 69-76
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Steam Formation and Migration in Firefighters’ Protective Clothing Using X-Ray Radiography
    Autorzy:
    Keiser, C.
    Wyss, P.
    Rossi, R. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/89736.pdf
    Data publikacji:
    2010
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    X-ray radiography
    evaporation
    steam transfer
    protective clothing
    firefighting
    heat and mass transfer
    Opis:
    X-ray radiography was used to quantify evaporation and moisture transfer in a multilayer firefighter protective clothing system with defined wetted layers exposed to low thermal radiation. Evaporation was faster and took place at higher temperatures if the moisture was located in the outer layers of the clothing system. Moisture that evaporated in the outer layers of the clothing system was found to move inwards and condense in the inner layers and on the cap of the measurement cell. Results found in this study correlated well with the findings of our former study based on simple temperature distribution measurements to determine moisture transfer in protective clothing layers at low level thermal radiation.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2010, 16, 2; 217-229
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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