Results 271 to 280 of about 44,899 (311)
Some of the next articles are maybe not open access.
Anisotropy Effects on the Thermoelectric Electronic Transport Coefficients
Energy Harvesting and Systems, 2015Abstract Engineering thermoelectric (TE) materials for applications in power generation and cooling requires an understanding of how anisotropy influences the TE properties. In this paper we use an angular-dependent, multivalley formalism to model the band structure and to explore the effect of anisotropy on the ...
Nicholas A. Mecholsky +4 more
openaire +1 more source
The effect of anisotropy on the second virial coefficient of H2
The Journal of Chemical Physics, 2000We have calculated the second virial coefficient B(T), including quantum corrections, from a pair potential for hydrogen recently developed from ab initio calculations. Previous comparisons with experimental second virial coefficients used an isotropic simplification of the potential.
Allan H. Harvey, Matthew P. Hodges
openaire +1 more source
Apparent Diffusion Coefficient Approximation and Diffusion Anisotropy Characterization in DWI
2005We present a new approximation for the apparent diffusion coefficient (ADC) of non-Gaussian water diffusion with at most two fiber orientations within a voxel. The proposed model approximates ADC profiles by product of two spherical harmonic series (SHS) up to order 2 from High Angular Resolution Diffusion-weighted (HARD) MRI data.
Yunmei Chen +5 more
openaire +2 more sources
Fuel, 2019
Abstract The assessment of process phenomena resulting from the hydrodynamics of gas flow through various kinds of coal chars may refer to a vast number of technological aspects pertaining to qualitative features of those materials. Those issues are subject to the assessment of the post-reaction gas movement in the conditions of the thermal ...
openaire +1 more source
Abstract The assessment of process phenomena resulting from the hydrodynamics of gas flow through various kinds of coal chars may refer to a vast number of technological aspects pertaining to qualitative features of those materials. Those issues are subject to the assessment of the post-reaction gas movement in the conditions of the thermal ...
openaire +1 more source
Goniometric measurement for the estimation of anisotropy coefficient of human and animal pancreas
2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2015Estimation of optical properties of biologic tissues is determinant for laser dosimetry in medical applications. Tissues highly absorb and scatter the light in near infrared spectrum, where the laser provides therapeutic effects. Novel frontiers of clinical practice, e.g., the employment of laser light for the treatment of pancreatic cancer, require ...
Paola Saccomandi +4 more
openaire +2 more sources
Apparent diffusion coefficient and fractional anisotropy in the vertebral bone marrow
Journal of Magnetic Resonance Imaging, 2010AbstractPurpose:To assess the state of cancellous tissue we analyzed the apparent diffusion coefficient (ADC) and fractional anisotropy (FA) in vertebral bone marrow.Materials and Methods:With 1.5 T magnetic resonance imaging (MRI), single‐shot diffusion echo planar imaging was used with b factors of 0 and 1000 s/mm2, diffusion‐sensitizing gradient in ...
Yu, Ueda +8 more
openaire +2 more sources
Regional and directional anisotropy of apparent diffusion coefficient in rat brain
NMR in Biomedicine, 1999Quantitative diffusion maps were recorded in normal rat brain. In multi-slice sections covering the whole brain, strong variation of the apparent diffusion coefficient (ADC) was observed depending on slice position at constant gradient direction. Furthermore, a varying difference between apparent diffusion coefficients depending on gradient direction ...
M, Hoehn-Berlage, M, Eis, B, Schmitz
openaire +2 more sources
Anisotropy of the Electrical Conductivity and the Seebeck Coefficient of Bi8Te7S5
Journal of Applied Physics, 1962Electrical conductivity and the Seebeck coefficient of Bi8Te7S5 have been measured in the two main crystallographic directions of the rhombohedral lattice, parallel and perpendicular to the hexagonal (basal) plane. The ratio of the two electrical conductivities has a value of 7.56 at liquid nitrogen temperature.
openaire +1 more source
Anisotropy of quantum oscillations of the sound absorption coefficient in tin
Soviet Journal of Low Temperature Physics, 1983A contactless method is used to investigate the quantum oscillations of the absorption coefficient for transverse sound with different polarizations in tin. A model is proposed, according to which the anisotropy of the observed oscillations is determined by the anisotropy of the conductivity of the metal in the plane perpendicular to the constant ...
A. N. Vasil’ev, A. A. Nurmagambetov
openaire +1 more source
Effect of anisotropy on the coefficient of sliding friction in Schistose rocks
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1974Abstract Foliated schist samples were sawcut at 45° to th cylinder axis and tested at 500 bars confining pressure, 25°C, and 10−4sec−1 shortening rate, to examine the effect of anisotropy on the coefficient of sliding friction (μ). Cylinders were cored from sample blocks in a variety of orientations to produce sawcut-to-foliation (STF) angles ranging
Lester J. LaFountain, David E. Dunn
openaire +1 more source