Results 1 to 10 of about 211,658 (259)
Casimir force on a piston [PDF]
Phys.Rev. D69 (2004) 065015, 2003 We consider a massless scalar field obeying Dirichlet boundary conditions on the walls of a two-dimensional L x b rectangular box, divided by a movable partition (piston) into two compartments of dimensions a x b and (L-a) x b. We compute the Casimir force on the piston in the limit L -> infinity. Regardless of the value of a/b, the piston is attracted
D.R. Phillips +19 more
arxiv +6 more sources
Int.J.Mod.Phys.A25:2196-2200,2010, 2010 We consider semitransparent pistons in the presence of extra dimensions. It is shown that the piston is always attracted to the closest wall irrespective of details of the geometry and topology of the extra dimensions and of the cross section of the piston. Furthermore, we evaluate the zeta regularized determinant for this configuration.
K. Kirsten, P. Morales
arxiv +4 more sources
A New Approach to Preform Design in Metal Forging Processes Based on the Convolution Neural Network
Applied Sciences, 2021 This study presents an innovative methodology for preform design in metal forging processes based on the convolution neural network (CNN) algorithm. The proposed approach extracts the features of inputted forging product geometries and utilizes them to ...
Seungro Lee +5 more
doaj +1 more source
The influence of coolant scale deposit inside the internal combustion engine on the piston and cylinder deformations [PDF]
Transport, 2005 This paper presents the analysis of the influence of engine coolant scale deposits on the deformations in the piston †cylinder pair. The results of carried out calculations enable to make more precise evaluation of cylinder repair dimensions.
Giedrius GarbinÄius +3 more
doaj +2 more sources
Modeling of hydraulic support system for large structures
Nihon Kikai Gakkai ronbunshu, 2021 In the control of a large structure, hydraulic equipment is often used because it requires a large output. In this study, we focus on the telescope as an example of a large structure, and model its hydraulic support system and analyze its characteristics
Tomoya HATTORI +5 more
doaj +1 more source
Experimental validation of hydraulic support system for large structures
Nihon Kikai Gakkai ronbunshu, 2021 In the control of a large structure, hydraulic equipment is often used because it requires a large output. In this study, we focus on a telescope as an example of a large structure, and experimentally verify the basic characteristics of the hydraulic ...
Tomoya HATTORI +7 more
doaj +1 more source
Energy Losses Related to Ring Pack Wear in Gasoline Car Engine
Energies, 2022 Decreasing production and rising prices of cars, especially those with electric drive, lead to longer use of cars with internal combustion engines. It can be assumed that in the future, more and more cars powered by such engines with high mileage and ...
Grzegorz Koszalka, Paweł Krzaczek
doaj +1 more source
Lubricants, 2022 The lubricating oil consumption (LOC) in internal combustion engines contributes to emission and deteriorates the performance of the aftertreatment. In this work, an optical engine with a 2D Laser-induced fluorescence (2D-LIF) system was used to study ...
Mo Li, Tian Tian
doaj +1 more source
Life, 2021 Objective: The aim of this study was to evaluate whether stapes prostheses can be visualized with less metal artifacts and therefore more accurately on cone beam computed tomography in comparison to computed tomography imaging.
Valerie Dahm +7 more
doaj +1 more source
Piston problem to the isentropic Euler equations for modified Chaplygin gas [PDF]
, 2022 In this paper, we solve constructively the piston problem for one-dimensional isentropic Euler equations of modified Chaplygin gas. In solutions, we prove rigorously the global existence and uniqueness of a shock wave separating constant states ahead of the piston when the piston pushed forward into the gas.
arxiv +1 more source