نتایج جستجو برای: homogeneous material

تعداد نتایج: 430269  

2015
Gennaro Vitucci Ivan Argatov Gennady Mishuris

In the present paper, an asymptotic model is constructed for the short-time deformation of an articular cartilage layer modeled as transversely isotropic, transversely homogeneous (TITH) biphasic material. It is assumed that the layer thickness is relatively small compared with the characteristic size of the normal surface load applied to the upper surface of the cartilage layer, while the bott...

2008
MARCO BARCHIESI Stefan Müller Jean-François Babadjian

In this article we show that for the homogenization of multiple integrals, the quasiconvexification of the cell formula is different from the asymptotic formula in general. To this aim, we construct three examples in three different settings: the homogenization of a discrete model, the homogenization of a composite material and the homogenization of a homogeneous material on a perforated domain.

Mahmoud Allahverdi Mohammad Hasan Zahmatkesh Tayeb Allahverdi Pourfallah,

Introduction Polymer gel dosimeters offer a practical solution to 3D dose verification for conventional radiotherapy as well as intensity-modulated and stereotactic radiotherapy. In this study, EGSnrc calculated and PAGAT polymer gel dosimeter measured dose profiles from single shot irradiation with 18 mm collimator of Gamma Knife in homogeneous and inhomogeneous phantoms were compared with eac...

Journal: :Investigative ophthalmology & visual science 1984
J S Zigler M Mochizuki T Kuwabara I Gery

This report describes a procedure by which high performance liquid chromatographic (HPLC) techniques are used to obtain homogeneous S-antigen. Conventionally prepared S-antigen was purified further by fractionation on the anion exchange Mono-Q column followed by gel filtration on a TSK-3000 column. This procedure produced an S-antigen preparation, which appeared homogeneous by gel electrophores...

Journal: :Optics express 2008
G Beadie James S Shirk A Rosenberg Paul A Lane E Fleet A R Kamdar Y Jin M Ponting T Kazmierczak Y Yang A Hiltner E Baer

The design, fabrication, and properties of one of a new class of gradient-index lenses are reported. The lens is an f/2.25 GRIN singlet based on a nanolayered polymer composite material, designed to correct for spherical aberration. The light gathering and focusing properties of the polymer lens are compared to a homogeneous BK7 glass singlet with a similar f-number. The modulation transfer fun...

2005
J. Samuel Zigler Manabu Mochizuki Toichiro Kuwabara

This report describes a procedure by which high performance liquid chromatographic (HPLC) techniques are used to obtain homogeneous S-antigen. Conventionally prepared S-antigen was purified further by fractionation on the anion exchange Mono-Q column followed by gel filtration on a TSK-3000 column. This procedure produced an S-antigen preparation, which appeared homogeneous by gel electrophores...

2005
J. M. Guedes E. Lubrano H. C. Rodrigues S. Turteltaub

1. Abstract This paper describes a hierarchical computational model to optimize the material distribution and the local material properties of thermo-mechanical structures within the context of transient thermal conduction problems. The problem formulation assumes a given domain, prescribed thermal boundary and initial conditions, and the objective is to identify the non-homogeneous material th...

K Kaur K.C Gupta R Kakar, S Kakar

The effect of magnetic field on torsional waves propagating in non-homogeneous viscoelastic cylindrically aeolotropic material is discussed. The elastic constants and non-homogeneity in viscoelastic medium in terms of density and elastic constant is taken. The frequency equations have been derived in the form of a determinant involving Bessel functions. Dispersion equation in each case has been...

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