نتایج جستجو برای: mean earth radius

تعداد نتایج: 717168  

Journal: :Revista brasileira de ortopedia 2012
Ricardo Kaempf de Oliveira Mário Arthur Rockenbach Binz Marco Tonding Ferreira Paulo Henrique Ruschel Pedro Delgado Serrano Rafael Pêgas Praetzel

OBJECTIVE Skewed consolidation of the distal radius, due to sequelae of fractures, may cause functional incapacity, thus leading such patients to present pain, loss of strength and diminished mobility. Based on the excellent results obtained from surgical treatment of unstable fractures of the distal radius through a volar approach and use of rigid fixation with a fixed-angle volar plate, we st...

Journal: :international journal of environmental research 0
s.m.t. sadatipour islamic azad university, north tehran branch, department of hydrography, tehran, iran r. kiamehr university of zanjan,division of cartography, zanjan, iran m. abrehdary royal institute of technology, division of geodesy and geomatics, stockholm, sweden a.r. sharifi islamic azad university, north tehran branch, department of hydrography, tehran, iran

one of the difficulties in using absolute altitudes is the separation between the mean open sealevel and geoid. theoretically, geoid is the base level in absolute altitudes, but practically, the mean open sealevel is used as a base level for absolute altitudes. the difference between these two levels is called as the seasurface topography. in this research, it is dealt the mean sea level modeli...

Journal: :Celestial Mechanics and Dynamical Astronomy 2010

1995
J. Sreedhar P. Van Dooren

We describe a fast algorithm to compute the real structured stability radius with respect to the open left-half plane or the open unit disk. It is based on a recent formula proved by Qiu et al. (Automatica, vol. 31, pp. 879-890, 1995) and the well-known correspondence between the singular values of a transfer function matrix and the imaginary eigenvalues of a related Hamiltonian matrix. Numeric...

2009
Dario Alfè

The Earth’s core consists of a solid ball with a radius of 1221 Km, surrounded by a liquid shell which extends up to 3480 km from the center of the planet, roughly half way toward the surface the mean radius of the Earth is 6373 km . The main constituent of the core is iron, and therefore the melting temperature of iron at the pressure encountered at the boundary between the solid and the liqui...

2002
C.T.J. Dodson A. G. Handley Y. Oba W. W. Sampson

The pore radius distribution in paper is known to be influenced by changes in the mean grammage and formation. Experimental data are presented that confirm the established result that the standard deviation of pore radii is proportional to the mean. The data show also that this proportionality is the same for changes in grammage and formation and that, contrary to results reported in the litera...

Journal: :Biomimetics 2023

Breast cancer is one of the most common cancers in women, with an estimated 287,850 new cases identified 2022. There were 43,250 female deaths attributed to this malignancy. The high death rate associated type can be reduced early detection. Nonetheless, a skilled professional always necessary manually diagnose malignancy from mammography images. Many researchers have proposed several approache...

  Background: The main purpose of this study was to determine the relationship between serum vitamin D and the status of bone mineral density in patients with low-energy hip and distal radius fracture. Methods: This retrospective case-control study was performed between January 2013 and January 2014. Participants aged 55 years or older were divided to case group including 85 patients with lo...

Journal: :مکانیک هوافضا 0
احسان براتی یونس علیزاده جمشید آقازاده

in this paper, the mean value of strain energy density criterion has been used to predict the critical fracture load in specimens with u-shaped notch under bending loads. an equation for calculation of averaged strain energy density in this zone has been presented. bending loads under mode i have been considered. two cases have been studied: 1) the control volume only includes the semicircular ...

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