نتایج جستجو برای: isotropic

تعداد نتایج: 23318  

Journal: :تابش و فناوری هسته ای 0
سید مهدی تیموری سندسی گروه فیزیک، دانشگاه گیلان، رشت، گیلان، ایران عباس قاسمی زاد گروه فیزیک، دانشگاه گیلان، رشت، گیلان، ایران

in this work, we had examined 7 different types of neutron sources -an isotropic point source, sending 14.1(mev) monoenergetic neutrons ,an spherical source with 30 micron radius sending 14.1 (mev) monoenergetic neutrons, and a 30 micron radius spherical source having gaussian fusion energy spectrum from a d-t fusion, with different bandwidths -1,10,50,100 and 1000 kev and investigated 5 differ...

Journal: :journal of applied and computational mechanics 0
yuwaraj m. ghugal head of department of applied mechanics, govt. college of engineeringkarad, shivaji university, maharashtra-415124, india param d. gajbhiye m-tech student

a 5th order shear deformation theory considering transverse shear deformation effect as well as transverse normal strain deformation effect is presented for static flexure   analysis of simply supported isotropic plate. the assumed displacement field accounts for non-linear variation of in-plane displacements as well as transverse displacement through the plate thickness. the condition of zero ...

Journal: :journal of tethys 0

primary assumption in most problems of elasticity theory in petroleum geophysics is that the elastic media is isotropic. laboratory experiments confirmed that most rocks are anisotropic. if in one medium, properties vary with directions, it is named as anisotropic. knowledge about anisotropy reduces risk and cost of hydrocarbon production. in the present study, anisotropy of a carbonate reservo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1357

در طبیعت ضریب آبگذاری یک آبخیز در جهات مختلف متغیر است و این خود موجب anisotropy در محیط میگردد. مسئله حرکت مایعات ناهمگن (مخلوط آب شور و شیرین) بطرف چاههای نیمه عمیق در یک محیط anisotropoc را میتوان با تغییراتی به حالت isotropic تبدیل کرد که این خود قبلا" توسط محققین چندی مورد بررسی قرار گرفته است . در مطالعه حاضر با بکار بردن تغییراتی در دستگاه مختصات محیط غیر یکنواخت خود را به محیطی یکنواخت ...

M.B. Kashani

In this paper we study isotropic Lagrangian submanifolds , in complex space forms . It is shown that they are either totally geodesic or minimal in the complex projective space , if . When , they are either totally geodesic or minimal in . We also give a classification of semi-parallel Lagrangian H-umbilical submanifolds.

2006
JANG-MEI WU

We construct quasiconformal mappings in Euclidean spaces by integration of a discontinuous kernel against doubling measures with suitable decay. The differentials of mappings that arise in this way satisfy an isotropic form of the doubling condition. We prove that this isotropic doubling condition is satisfied by the distance functions of certain fractal sets. Finally, we construct an isotropic...

2017
N. N. LEONENKO M. D. RUIZ

The restriction to the sphere of an homogeneous and isotropic random field defines a spherical isotropic random field. This paper derives central and non-central limit results for the first Minkowski functional subordinated to homogeneous and isotropic Gaussian and chi-squared random fields, restricted to the sphere in R. Both scenarios are motivated by their interesting applications in the ana...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2009
Cheng-Wei Qiu Li Hu Xiaofei Xu Yijun Feng

We propose a practical realization of electromagnetic spherical cloaking by layered structure of homogeneous isotropic materials. By mimicking the classic anisotropic cloak by many alternating thin layers of isotropic dielectrics, the permittivity and permeability in each isotropic layer can be properly determined by effective medium theory in order to achieve invisibility. The model greatly fa...

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