Results 101 to 110 of about 254,236 (270)

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar   +6 more
wiley   +1 more source

The Coal Industry in Southeast Europe (paying special attention to Bosnia and Herzegovina) in the Context of Restructuring of Energetics and the Protection of the Environment [PDF]

open access: yes
In wide region of South-Eastern Europe it has been notice even long ago that special attention must be given to a faster making of new creative and innovative regional structure of energetics which will made it possible for this geo-space to get ...
Izet Ibreljic, Salih Kulenovic
core  

Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze‐Drying for Improved Gas Barriers

open access: yesAdvanced Engineering Materials, EarlyView.
Freeze‐drying of layered silicate is the key to get coatings with superior gas barrier. Freeze‐drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these ...
Joshua Lommes   +4 more
wiley   +1 more source

The numbers of ringed seals (Phoca hispida) in Baffin Bay and associated waters

open access: yesNAMMCO Scientific Publications, 1998
The size of the population of ringed seals (Phoca hispida) inhabiting Baffin Bay and associated waters was estimated by two methods. An approximate model of the energetics of the polar bear (Ursus maritimus) estimated an energetic need of about 16,000 MJ/
Michael C S Kingsley
doaj   +1 more source

Effect of the cluster size in modeling the H_2 desorption and dissociative adsorption on Si(001)

open access: yes, 1998
Three different clusters, Si_9H_12, Si_15H_16, and Si_21H_20, are used in density-functional theory calculations in conjunction with ab initio pseudopotentials to study how the energetics of H_2 dissociativ e adsorption on and associative desorption from
Kratzer, P., Penev, E., Scheffler, M.
core   +1 more source

Development and Preliminary In Vivo Study of 3D‐Printed Bioactive Glass Scaffolds with Trabecular Architecture

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the fabrication of trabecular bioactive glass scaffolds (composition “1d”: 46.1SiO2‐28.7CaO‐8.8MgO‐6.2P2O5‐5.7CaF2‐4.5Na2O wt%) through vat photopolymerization and the relevant results from mechanical testing and in vivo implantation procedures in rabbit femora, showing great promise for bone tissue engineering applications.
Dilshat Tulyaganov   +8 more
wiley   +1 more source

Generalized stacking fault energy surfaces and dislocation properties of aluminum

open access: yes, 1999
We have employed the semidiscrete variational generalized Peierls-Nabarro model to study the dislocation core properties of aluminum. The generalized stacking fault energy surfaces entering the model are calculated by using first-principles Density ...
A. Wright   +32 more
core   +1 more source

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

open access: yesAdvanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu   +8 more
wiley   +1 more source

Application of Evolutionary Algorithms and Statistical Analysis in the Numerical Optimization of an Axial Compressor

open access: yesInternational Journal of Rotating Machinery, 2005
The purpose of this work is to optimize the stator shape of an axial compressor, in order to maximize the global efficiency of the machine, fixing the rotor shape. We have used a 3D parametric mesh and the CFX-Tascflow code for the flow simulation.
Alberto Clarich   +3 more
doaj   +1 more source

Geo-energetics of Ukrainian crystalline shield [PDF]

open access: yes, 2019
Purpose. To develop an analytical method which allows investigating the energy condition of rocks within the Ukrainian Crystalline shield. Methodology.
Khomenko, O. Ye., Kononenko, M. M.
core  

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