Results 81 to 90 of about 1,506,118 (205)

Possibilities for drag reduction by boundary layer control [PDF]

open access: yes
The mechanics of laminar boundary layer transition are reviewed. Drag possibilities for boundary layer control are analyzed using assumed conditions of transition Reynolds number, inlet loss, number of slots, blower efficiency, and duct losses.
Naiman, I.
core   +1 more source

Superconductivity in the doped bilayer Hubbard model

open access: yes, 2009
We study by the Gutzwiller approximation the melting of the valence bond crystal phase of a bilayer Hubbard model at sufficiently large inter-layer hopping.
Barone, Paolo   +2 more
core   +1 more source

Determination of Some Heavyweight Aggregate Half Value Layer Thickness Used for Radiation Shielding

open access: yesActa Physica Polonica A, 2012
A radiation dose above the maximum permissible limit is very dangerous for human being. In radiation shielding, absorbent materials’ properties must be well known. Heavyweight concrete is the most widely used in the world for this aim. The aggregate component of concrete plays an important role in improving concrete properties and this is effect of ...
AKKURT, İskender   +5 more
openaire   +2 more sources

S-wave superconductivity near a surface

open access: yes, 2003
We study the superconducting order parameter near a surface with the Bogoliubov-de Gennes formalism. For definiteness we use the attractive Hubbard model.
Anderson   +13 more
core   +1 more source

Ionometric Half Value Layer Meter for Measurements of the Quality of X-Rays [PDF]

open access: yesZeitschrift für Naturforschung A, 1951
Abstract An instrument is described which permits the measurement of the quality of X-rays in terms of the half value layer (HVL) of a suitable filter material. It consists of two ionization chambers adjustable in volume, which are connected in opposition and linked with an X-ray dose measuring device.
openaire   +1 more source

Turbulence and transition modeling for high-speed flows [PDF]

open access: yes
Research conducted during the past three and a half years aimed at developing and testing a turbulence/transition model applicable to high-speed turbulent flows is summarized.
Wilcox, David C.
core   +1 more source

Intelligent optical performance monitor using multi-task learning based artificial neural network

open access: yes, 2018
An intelligent optical performance monitor using multi-task learning based artificial neural network (MTL-ANN) is designed for simultaneous OSNR monitoring and modulation format identification (MFI).
Shu, * Liang   +5 more
core   +1 more source

Cross Validation Of Neural Network Applications For Automatic New Topic Identification [PDF]

open access: yes, 2005
There are recent studies in the literature on automatic topic-shift identification in Web search engine user sessions; however most of this work applied their topic-shift identification algorithms on data logs from a single search engine.
Spink, Amanda   +3 more
core  

KTlO: A metal shrouded 2D semiconductor with high carrier mobility and tunable magnetism

open access: yes, 2018
Two-dimensional (2D) materials with high carrier mobility and tunable magnetism are in high demand for nanoelectronics and spintronic applications. Herein, we predict a novel two-dimensional monolayer KTlO that possesses an indirect band gap of 2.25 eV ...
Li, Li-Heng   +6 more
core  

Development of a flexible composite based on vulcanized silicon casting with bismuth oxide and characterization of its radiation shielding effectiveness in diagnostic X-ray energy range and medium gamma-ray energies

open access: yesNuclear Engineering and Technology
The study aims to develop a novel, lead-free, flexible and lightweight composite shielding material against ionizing radiation. For this, it was used bismuth oxide (Bi2O3) in RTV-2 silicon matrix. The shielding tests were carried out in both diagnostic X-
İbrahim Demirel, Haluk Yücel
doaj   +1 more source

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