نتایج جستجو برای: oxygen cylinders

تعداد نتایج: 216776  

2015
Lixin Ge Tianrong Zhan Dezhuan Han Xiaohan Liu Jian Zi

Topological insulators (TIs) exhibit many exotic properties. In particular, a topological magneto-electric (TME) effect, quantized in units of the fine structure constant, exists in TIs. Here, we theoretically study the scattering properties of electromagnetic waves by TI circular cylinders particularly in the Rayleigh scattering limit. Compared with ordinary dielectric cylinders, the scatterin...

Journal: :Politeknik dergisi 2021

This paper deals with the elastic stresses of internally or externally pressurized long thick-walled composite cylinders fixed ends. Cylinders are made unidirectionally aligned transversely isotropic fibers and matrix. Axial radial fiber alignments considered, analytical solutions derived accordingly. Effects direction volume fraction alteration on limit analyzed. It is observed for both intern...

2002
Troels Harmark Niels A. Obers

We take steps toward constructing explicit solutions that describe non-extremal charged dilatonic branes of string/M-theory with a transverse circle. Using a new coordinate system we find an ansatz for the solutions with only one unknown function. We show that this function is independent of the charge and our ansatz can therefore also be used to construct neutral black holes on cylinders and n...

2000
Doron Gal Jack Dvorkin

Axisymmetrical stresses in an infinitely long hollow isotropic circular cylinder (plane strain) quickly approach their asymptotic values as the external radius increases. This is not the case if the cylinder is even slightly anisotropic -asymptotic solutions (for an infinitely large external radius) do not exist. We find the mechanical meaning of this disparity by using formulas for radial and ...

Journal: :BRICS Report Series 2002

Journal: :Journal of Mathematical Physics 2014

Journal: :Review of Scientific Instruments 1956

Journal: :Brazilian oral research 2017
Marcela Oliveira de Souza Vicente Castelo Branco Leitune Stéfani Becker Rodrigues Susana Maria Werner Samuel Fabrício Mezzomo Collares

The present study aimed to evaluate effects of different surface treatments and aging of composite cylinders on bond strength of composite resin repair. Thirty-two composite cylinders were produced and divided into four groups according to type of surface treatment and storage time of composite cylinder and repair. Cylinder surface of control group (Gcontrol) received no treatment before compos...

2016
Kishan Ramesh Kumar Sumant Morab Suhas Shekar Arun Mahalingam

This paper mainly researched on influence of vortex generator on lift coefficient and drag coefficient, when vortex generator is mounted on a flat plate. Vented cylinders were used as vortex generators which intensify vortex shedding in the wake of the vented cylinder as compared to base line circular cylinder which ensures more attached flow and increases lift force of the system. Firstly vent...

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