Results 131 to 140 of about 397,295 (315)

Sulfonated Diels–Alder Poly(Phenylene)s in Membrane Electrode Assemblies for Fuel Cells

open access: yesAdvanced Energy & Sustainability Research
The transition to environmentally sustainable materials in fuel cells requires alternatives to persistent polyfluoroalkyl substances (PFAS) like Nafion.
Heemin Park   +6 more
doaj   +1 more source

Experimental and Numerical Modal Analysis of Composite Sandwich Structures Using Surfboards as Model Systems

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents an experimental and numerical modal investigation of composite sandwich structures using surfboards as model systems. By comparing different core materials and reinforcement strategies, the study demonstrates how local stiffeners influence vibrational response and introduce characteristic modal features, highlighting modal ...
Brett Connellan   +4 more
wiley   +1 more source

Validation of a closed-form solution to Fick’s diffusion laws for non-steady state sorption by a plane sheet

open access: yesResults in Engineering
Fick's second law is a partial differential equation that describes the time-dependent concentration distribution of a diffusing species. It is fundamental to fields like environmental and materials engineering.
Michael Brilz   +3 more
doaj   +1 more source

MPA Programs in Australia

open access: yesChinese Public Administration Review, 2005
Australian universities have established specific Masters programs for public servants over the past twenty years. However, until recently, despite being established, they have not thrived by comparison with MBA and other masters courses in business. It was not easy to attract students and good staff. MPA programs have generally not captured the public
openaire   +2 more sources

Grain Refinement During Severe Plastic Deformation and Similitude of Subgrain Formation: A Molecular Dynamics Study

open access: yesAdvanced Engineering Materials, EarlyView.
Molecular dynamics is used to investigate structure refinement during severe plastic deformation. The results show similitude with experimental data. Molecular dynamics simulations of severe plastic deformation of monocrystalline and polycrystalline samples by multiaxial compression of aluminum are carried out.
Roberto B. Figueiredo
wiley   +1 more source

29. MPA-Seminar: Sicherheit und Verfuegbarkeit in der Energietechnik. RIMAP Power Workshop. ECOPRESS Seminar. Bd. 2 Vortraege 25-55

open access: yes, 2003
The MPA-seminar was organized in several sessions. Volume 2 comprises five sessions(session 6-10) with the following topics: Damage evaluation and exchange measurements, RIMAP power workshop including 2 sessions captioned Rimap project and its activities
Stuttgart Univ. (Germany). Staatliche Materialpruefungsanstalt
core  

Influence of Si Content and Milling Duration on the Microstructure and Mechanical–Tribological Properties of AlCoCrFeNiSi High‐Entropy Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Si‐doped AlCoCrFeNi high‐entropy alloys are synthesized by mechanical alloying to reveal the effect of Si content and milling time on phase evolution, microstructural refinement, and tribological behavior. A transition from FCC to BCC structure, significant grain refinement, and enhanced hardness and wear resistance are achieved, with the 4 at% Si ...
Mustafa Okumuş   +2 more
wiley   +1 more source

Extraction, Identification And Separation Of Vitamin E And Djenkolic Acid From Pithecellobium Jiringan (Jack) Prain Seeds Using Supercritical Carbon Dioxide [TP248.T55 A995 2007 f rb]. [PDF]

open access: yes, 2007
Pelarut karbon dioksida dalam keadaan lampau genting telah digunakan sebagai satu kaedah untuk menyari dan seterusnya memisahkan komponen berubat dan beracun yang terdapat di dalam biji jering atau nama saintifiknya adalah Pithecellobium Jiringan Jack ...
Che Yunus, Mohd Azizi
core  

Visio Scan VC98, Corneometer MPA 5 and Tewameter MPA 5

open access: yesAfrican Journal of Pharmacy and Pharmacology, 2012
Human skin is the largest exposed area of our body. There are number of physiological changes which may occur in response to internal or external sources. Biophysical techniques have been extensively employed to study any changes in human skin physiology. Usually these bioengineering techniques are equipped with non-invasive probes.
openaire   +2 more sources

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

open access: yesAdvanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal   +3 more
wiley   +1 more source

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