نتایج جستجو برای: measurements
تعداد نتایج: 367154 فیلتر نتایج به سال:
BACKGROUND Physiological noise is one of the major confounds for fMRI. A common class of correction methods model noise from peripheral measures, such as ECGs or pneumatic belts. However, physiological noise correction has not emerged as a standard preprocessing step for fMRI data yet due to: (1) the varying data quality of physiological recordings, (2) non-standardized peripheral data formats ...
Construction of cable supported bridges has experienced a great impulse in the past decade. Bridges having more than 800 m of span length were built in France and Japan and some bridges with span length of more than 1 km are going to be built, such as the Stonecuters bridge in Hong-Kong, and the Chongming in China (Fig. 1). Because of the increasing length of this class of bridges, they are bec...
Nearly all the neutral iridium complexes widely used as dopants in PhOLEDs are racemic mixtures; however, this study observed that these complexes can be separated into stable optically active Λ and ∆ isomers and that their chirality is an intrinsic property. The circularly polarised phosphorescent photoluminescence (CPPPL) signals of Λ/Δ isomers are perfect mirror images with opposite polarisa...
Most aeolian sediment transport models and experiments have been conducted on flat horizontal surfaces. Very little numerical or analytical research has been carried out for aeolian sand transport on slopes. The current work presents numerical modelling of saltating sand for a climbing dune which has a slope angle of 20”. The model utilised wind fields predicted from the FAA complex terrain mod...
For more than thirty years, rnvestrgators have recognized that luminescence measurements made with certam experimental geometries require corrections for the refractive index of the solution [I,?]. These corrections are necessary when the ratio of luminescence from two solutrons IS required, as in relatrve quantum yield measurements [3]. In many cases, the m~gnttude of these corrections is not ...
The identification of nonlinear aeroelastic systems based on the Volterra theory of nonlinear systems is presented. Recent applications of the theory to problems in experimental aeroelasticity are reviewed. These results include the identification of aerodynamic impulse responses, the application of higher-order spectra (HOS) to wind-tunnel flutter data, and the identification of nonlinear aero...
Common Western-blot imaging systems have previously been adapted to measure signals from luminescent microplate assays. This can be a cost saving measure as Western-blot imaging systems are common laboratory equipment and could substitute a dedicated luminometer if one is not otherwise available. One previously unrecognized limitation is that the signals captured by the cameras in these systems...
Flow boiling in a straight\ rectangular channel was investigated to explore the conditions leading to critical heat ~ux "CHF#[ The ~ow channel had a 4[9×1[4 mm cross!section and 090[5 mm heated length^ heat was applied to the shorter dimension along only one wall[ Tests were performed with FC!61 liquid over a velocity range of 9[14 to 09 m s and at outlet subcoolings of 2\ 05 and 18>C[ Video im...
The International Commission on Radiation Units and Measurements (ICRU): Activities and Future Plans
A.Wambersie(1), P.M.DeLuca Jr(2), R.S.Caswell(3) and H.G.Menzel(4) (1) Université Catholique de Louvain, 1200 Brussels, Belgium (2) University of Wisconsin, Madison, WI, 53706, USA (3) National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA (4) CERN, Geneva, CH International Commission on Radiation Units and Measurements (ICRU), 7910 Woodmont Avenue, Suite 800 Bethesda, Mar...
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