نتایج جستجو برای: dual energy x ray absorptiometry
تعداد نتایج: 1391947 فیلتر نتایج به سال:
1 International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China 2 Joint Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, CA 91125, USA 3 Centre for Clean Environment and Energy, Environmental Futures Centre, Griffith University, Gold Coast, QLD 4215, Aus...
Motivated by the large effect of turbulent drag reduction by minute concentrations of polymers, we study the effects of a weakly space-dependent viscosity on the stability of hydrodynamic flows. In a recent paper [Phys. Rev. Lett. 87, 174501, (2001)], we exposed the crucial role played by a localized region where the energy of fluctuations is produced by interactions with the mean flow (the "cr...
The quantized Dirac field is known, by a result of Fewster and Verch, to satisfy a Quantum Weak Energy Inequality (QWEI) on its averaged energy density along time-like curves in arbitrary four-dimensional globally hyperbolic spacetimes. However, this result does not provide an explicit form for the bound. By adapting ideas from the earlier work, we give a simplified derivation of a QWEI for the...
In this work, total smooth air-water interfacial areas were measured for a series of nine natural and model sandy porous media as a function of water saturation using synchrotron X-ray microtomography. Interfacial areas decreased linearly with water satuation, while the estimated maximum interfacial area compared favorably to the media geometric surface areas. Importantly, relative interfacial ...
We derive the electromagnetic energy density in a chiral metamaterial consisting of uncoupled single-resonance helical resonators. Both the lossless and absorptive cases are studied, and the energy density is shown to be positively definite. The key relation making the derivation successful is the proportionality between the magnetization and the rate of change of the electric polarization of t...
It's not surprisingly when entering this site to get the book. One of the popular books now is the database and expert systems applications 17th international conference dexa 2006 krakow poland s. You may be confused because you can't find the book in the book store around your city. Commonly, the popular book will be sold quickly. And when you have found the store to buy the book, it will be s...
a Vienna University of Technology, Institute of Chemical Technologies and Analytics, Getreidemarkt 9/164-EC, 1060 Vienna, Austria b Vienna University of Technology, Institute of Materials Chemistry, Getreidemarkt 9/165-PC, 1060 Vienna, Austria c University of Innsbruck, Institute of Physical Chemistry, Innrain 80-82, 6020 Innsbruck, Austria d Fritz Haber Institute of the Max Planck Society, Dep...
We describe a method for automatic detection and localisation of vertebrae in clinical images that was designed to avoid making a-priori assumptions of how many vertebrae are visible. Multiple Random Forest regressors were trained to identify vertebral end-plates, providing estimates of both the location and pose of the vertebrae. The highest-weighted responses from each model were combined usi...
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