Results 21 to 30 of about 321,629 (269)

MeV irradiation of tungsten nanowires: structural modifications

open access: yesMaterials Research Express, 2020
In this work we use the Two Temperature Model coupled to Molecular Dynamics (TTM-MD) to study swift heavy ion irradiation of W finite nanowires. Au projectiles are considered with energies ranging from 20 to 50 MeV, which correspond to electronic ...
Joás Grossi   +2 more
doaj   +1 more source

Optimasi Parameter Desain Multi-Cell Hexagonal Crash Box terhadap Absorbsi Energy Impact dengan Metode Taguchi

open access: yesRekayasa Mesin, 2020
The crash box is a passive safety system placed between the bumper and the mainframe of the car that functions as an energy absorber to reduce the impact of driving accidents.
Muhammad Rismanto   +2 more
doaj   +1 more source

Hole pairs in a spin liquid: Influence of electrostatic hole-hole repulsion [PDF]

open access: yesPhysical Review B, 1999
The stability of hole bound states in the t-J model including short-range Coulomb interactions is analyzed using computational techniques on ladders with up to $2 \times 30$ sites. For a nearest-neighbors (NN) hole-hole repulsion, the two-holes bound state is surprisingly robust and breaks only when the repulsion is several times the exchange $J$. At $\
Gazza, C.   +3 more
openaire   +2 more sources

Classification of Scouring Form of Homogeneous and Sticky Earth Dams in Overtopping

open access: yesعلوم آب و خاک, 2022
The objective of this study was to investigate how the earth dam is destroyed due to the effect of upstream and downstream slope of the body in overflow conditions.
S. salehi, A.R Esmaili, K. Esmaili
doaj  

A Numerical–Analytical Approach for the Preliminary Design of Thin-Walled Cylindrical Shell Structures with Elliptical Cut-Outs

open access: yesAerospace, 2019
The presence of cut-outs within thin-walled shell structures is unavoidable, holes being needed for the passage of electrical cables, fuel, or just to reduce the weight of the components.
Angela Russo   +4 more
doaj   +1 more source

Giant holes [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2010
We study the semiclassical spectrum of excitations around a long spinning string in AdS_3. In addition to the usual small fluctuations, we find the spectrum contains a branch of solitonic excitations of finite energy. We determine the dispersion relation for these excitations. This has a relativistic form at low energies but also matches the dispersion
Nick Dorey, Manuel Losi
openaire   +2 more sources

L'île en tant qu'elle est un trou

open access: yesCarnets, 2019
As heterotopia, the hole and the island are connected, because they are a switch of time and space. Beyond the anecdote, we show that the hole constitutes and organizes the island in many ways. How does the hole allow or change insularity?
Lionel Rebout
doaj   +1 more source

Image of Shamanic Cosmos in Cyprus Turkish Folktales / Kıbrıs Türk Masallarında Şamanistik Evren Tasavvuru [PDF]

open access: yesFolklor/Edebiyat, 2016
From mythology to celestial religions, cosmos is conceived of three parts. These are the sky where good gods are in, the earth where people live in and the underworld where bad gods and spirits are in. The sky is made up seven, nine or seventeen layers
Kadriye Türkan*
doaj  

Structural Optimization of Self-Supporting Rectangular Converging-Diverging Tube Heat Exchanger

open access: yesEnergies, 2022
A three-dimensional numerical investigation of turbulent heat transfer and fluid flow characteristics of the new heat exchanger and self-support of a rectangular converging-diverging (SS-RCD) tube bundle heat exchanger with different inserts was ...
Feng Jiao   +3 more
doaj   +1 more source

Optimal Hole Shapes in Composite Structural Elements Considering Their Mechanical and Strength Anisotropy

open access: yesApplied Sciences
A method for selecting the optimal shape of holes, taking into account the strength anisotropy of composites, is proposed. The methodology includes the following: an algorithm for stress determination based on singular integral equations and Green’s ...
Wojciech Skarka   +3 more
doaj   +1 more source

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