Results 41 to 50 of about 4,500,655 (305)

An exact interior Kerr solution [PDF]

open access: yesNew Astronomy, 2018
We present a simple exact solution for the interior of a rotating star. The interpretation of the stress energy tensor as that of a fluid requires the existence of a high viscosity, which is quite expected for a rotating fluid. In spite of the negative stresses, energy conditions are in fact all satisfied.
Ravi, Aravind P, Banerjee, Narayan
openaire   +2 more sources

Insight on the Nonhomogeneous Pantograph Equation with an Arbitrary Polynomial of Degree n: Explicit Solution

open access: yesMathematics
This paper solves a nonhomogeneous version of the pantograph equation. The nonhomogeneous term is taken as a polynomial of degree n with arbitrary coefficients.
Mona D. Aljoufi
doaj   +1 more source

Exact charged traversable wormhole solution

open access: yesPhysics Letters B
An exact analytical solution for the charged traversable wormhole solution has been found by solving minimally coupled Einstein-Maxwell-Scalar (EMS) field equations.
Bobur Turimov   +3 more
doaj   +1 more source

Analytical and Numerical Investigation for the Inhomogeneous Pantograph Equation

open access: yesAxioms
This paper investigates the inhomogeneous version of the pantograph equation. The current model includes the exponential function as the inhomogeneous part of the pantograph equation.
Faten Aldosari, Abdelhalim Ebaid
doaj   +1 more source

THE MATHEMATICAL MODEL OF DOME COVERING INDUSTRIAL FACILITY

open access: yesArchitecture and Engineering, 2017
A statically determinate flat truss models the industrial facility's arch. To derive dependence of structural deflection on the number of panels in a span, the Maxwell–Mohr equation, computer mathematics system Maple and the induction method are applied.
Mikhail Kirsanov, Sergei Astahov
doaj   +1 more source

General solutions of the Laplace equation

open access: yesPartial Differential Equations in Applied Mathematics, 2022
With the purpose of concisely and effectively obtaining the general or exact solutions of partial differential equations (PDEs), we put forward some universal Z1transformations in present paper.
Hong Lai Zhu
doaj   +1 more source

Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan   +18 more
wiley   +1 more source

Infant Embryonal CNS Tumors: Molecular Insights and Treatment Considerations for Contemporary Pediatric Neuro‐Oncology

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Embryonal tumors comprise the majority of malignant central nervous system (CNS) neoplasms diagnosed in children under 3 years of age. Compared with their counterparts in older children, these tumors exhibit distinct molecular biology and a more aggressive clinical phenotype, while their management is complicated by the heightened ...
Sudarshawn Damodharan   +3 more
wiley   +1 more source

Exact solution of a triaxial gyrostat with one rotor [PDF]

open access: yes, 2008
The problem of the attitude dynamics of a triaxial gyrostat under no external torques and one constant internal rotor, is a three degrees-of-freedom system, although thanks to the existence of integrals of motion it can be reduced to only one degree-of ...
Elipe, A. [0000-0001-5208-4494]   +1 more
core   +1 more source

Exact solution for the nonlinear pendulum

open access: yesRevista Brasileira de Ensino de Física
This paper deals with the nonlinear oscillation of a simple pendulum and presents not only the exact formula for the period but also the exact expression of the angular displacement as a function of the time, the amplitude of oscillations and the angular
A. Beléndez   +4 more
doaj   +1 more source

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