Results 21 to 30 of about 3,165,974 (241)

Nonlinear Horizontal Diffusion for GCMs [PDF]

open access: yes, 2007
The mixing-length-based parameterization of horizontal diffusion, which was originally proposed by Smagorinsky, is revisited. The complete tendencies of horizontal momentum diffusion, the associated frictional heating, and horizontal diffusion of ...
Becker, Erich, Burkhardt, Ulrike
core   +1 more source

Design of Lightweight Linear Diffusion Layers from Near-MDS Matrices

open access: yesIACR Transactions on Symmetric Cryptology, 2017
Near-MDS matrices provide better trade-offs between security and efficiency compared to constructions based on MDS matrices, which are favored for hardwareoriented designs.
Chaoyun Li, Qingju Wang
doaj   +1 more source

Study of local diffusion coefficients of the hydration layer of lipid vesicle bilayers [PDF]

open access: yes, 2009
Water molecules near the surface of vesicle bilayers exhibit slow dynamics with respect to that of pure bulk water as they belong to the hydration layer.
Armstrong, Brandon D.   +2 more
core   +1 more source

Surface Treatment of Tool Steel in Controlled Plasma Nitriding Environment

open access: yesTribology Online, 2008
Nitriding of tool steel was investigated in a controlled electron beam excited nitrogen plasma environment. The samples were nitrided in two distinct regions, a region with high plasma density and a region with low plasma density called the irradiated ...
Yasuharu Yoshikawa   +2 more
doaj   +1 more source

Study on water and oxygen transfer characteristics of HT-PEM fuel cells

open access: yesHeliyon, 2023
In this study, a steady-state model is developed by combining mechanical, Navier–Stokes, Maxwell–Stefan, and Butler–Volmer equations. This model is then used to investigate the influences of diffusion layer thickness deformation under a specific assembly
Hongbin He, Haisi Peng, Guangchao Li
doaj   +1 more source

Effects of Copperizing on Microstructure and Properties of QT500-7 [PDF]

open access: yesCailiao Baohu, 2023
 In order to improve the surface mechanical properties of QT500-7,the copperizing layer was prepared on the surface of QT500-7 by solid diffusion metallizing method.The diffusion behavior of copper in QT500-7 and its influence on the ...
GU Rao, LIU Fengguo, LOU Changsheng
doaj   +1 more source

Drift-diffusion of highly mobile dopants in CdTe [PDF]

open access: yes, 2008
The diffusion of Ag in CdTe exhibits anomalous concentration profiles, which essentially reflect the profile of the deviation from stoichiometry. At a diffusion temperature of about 800 K, the Ag dopant atoms are present as charged interstitials.
Belas, Eduard   +5 more
core   +1 more source

Model of smoothing roughness on GaAs wafer surface by using nonabrasive chemical-and-mechanical polishing

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2017
Studied experimentally in this work has been the process of smoothing relief roughness on the GaAs wafer surface by using the method of contactless nonabrasive chemical-and-mechanical polishing under conditions of its rotational movement relatively to ...
A.V. Fomin   +3 more
doaj   +1 more source

Influence of the Nernst diffusion layer thickness on surface concentration in a model electrochemical process with a preceding chemical reaction

open access: yesХімія, фізика та технологія поверхні, 2023
The influence of the Nernst diffusion layer thickness on the surface concentrations of electroactive and electroinactive species in a model electrochemical process with a preceding homogeneous first-order chemical reaction under application of a small ...
O. I. Gichan
doaj   +1 more source

Surface modification of steel 20 by the method of chemical-thermal treatment by annealing in a muffle furnace

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2019
The article is devoted to the current problem related to the hardening of the surface layers of metal materials, including steel parts. The authors of the article describe the methods of chemical and thermal treatment of surface layers of materials to ...
E.П. Шевчук   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy