3,356 research outputs found

    Body, Social and Material Connections as Ways of knowing: A Reflection of the Adult Smoker’s Experiences when learning about and using an Electronic Cigarette

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    This study explores the body, as a site of learning and the impact of social, and material networks by investigating the lived experiences of adult smokers who use an electronic cigarette device to reduce or quit cigarette smoking

    Thermal Plasma Gasification of Biomass

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    Global demand for certified hardwood products as determined from a survey of hardwood exporters

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    United States hardwood exporters were surveyed to determine the current international markets for certified hardwood products (CHWP) and to document the experiences of hardwood exporters concerning CHWP and certification. There was a 42% response rate to the 265 mailed surveys. Twenty six percent of exporting companies received requests for CHWP. These requests represented \u3c5% of the companies total export business. The experiences of the responding exporters parallels that reported in previously published studies. Willingness to pay a premium is low. Over half of the exporters indicated that customers will not pay any premium. Chain of custody issues are a major problem and the supply of certified hardwood lumber is small. Only large companies owning their own forests have no problem with certification, chain-of-custody documentation or supply. The markets remain predominantly niche markets centered in northern Europe. China is emerging as a major market for primary CHWP

    Investigation of the Arc-Anode Attachment Area by Utilizing a High-Speed Camera

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    The arc-anode attachment in the DC plasma arc influences power distribution in the plasma, a lifespan of anode and flow structure of plasma jet. A movement of the attachment and the surrounding plasma was directly observed by using a high-speed camera (max. 1,080,000 fps). The observations were compared with cathode-anode voltage measurements (sample rate 80 MHz). We have directly measured the average velocity of the attachments and hydrodynamic waves above them, as well as the characteristic dwell times and dwell frequencies of the attachments

    New coupled thermoelectric link finite element for FGM materials

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    The paper deals with derivation process of new FEM equations for steady thermoelectric two-way coupled analysis of link conductor made of Functionally Graded Material (FGM). One example of coupled analysis will be introduced to demonstrate accuracy and effectiveness of our new approach in computer modelling of such systems

    All Sky Camera for the CTA Atmospheric Calibration work package

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    The All Sky Camera (ASC) is a passive non-invasive imaging system for rapid night sky atmosphere monitoring. By design, the operation of the ASC will not affect the measurement procedure of the CTA observatory, for which we discuss its application in this report. The data collected should enable improved productivity and increased measurement time for the CTA observatory. The goal of ASC is to identify cloud position, atmosphere attenuation and time evolution of the sky condition, working within the CTA Central Calibration Facilities (CCF) group. Clouds and atmosphere monitoring may allow near-future prediction of the night-sky quality, helping scheduling. Also, in the case of partly cloudy night sky the cameras will identify the uncovered regions of the sky during the operation time, and define potential observable sources that can be measured. By doing so, a higher productivity of the CTA observatory measurements may be possible

    Modal analysis of the fgm beam-like structures with effect of the thermal axial force

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    The modal analysis of the FGM beam-like actuator is presented, where effects of the thermal axial force and the shear force are considered. The temperature load is assumed to be lower as the critical buckling temperature. The longitudinal variation of material properties has been assumed which can be caused by the varying constituent’s volume fraction and the temperature dependence of the constituent’s material properties. Our new FGM beam finite element has been used in the proposed analysis. An influence of the material properties variation and the thermal axial forces on the actuator eigenfrequency and eigenform has been studied and discussed

    Electric field control of exchange bias in multiferroic epitaxial heterostructures

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    The magnetic exchange bias between epitaxial thin films of the multiferroic (antiferromagnetic and ferroelectric) hexagonal YMnO3 oxide and a soft ferromagnetic (FM) layer is used to couple the magnetic response of the ferromagnetic layer to the magnetic state of the antiferromagnetic one. We will show that biasing the ferroelectric YMnO3 layer by an appropriate electric field allows modifying and controlling the magnetic exchange bias and subsequently the magnetotransport properties of the FM layer. This finding may contribute to pave the way towards a new generation of electric-field controlled spintronics devices.Comment: 15 pages, 5 figures, submitte
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