Results 31 to 40 of about 4,045,081 (310)

High-temperature oxidation of nickel-based alloys and estimation of the adhesion strength of resulting oxide layers [PDF]

open access: yes, 2011
The kinetics of isothermal oxidation (1100°C) of commercial nickel-based alloys with different content of sulfur (0.22–3.2 wt ppm) is studied. The adhesion strength in a metal/oxide system is estimated as a function of sulfur content and duration of high-
A.A. Volinsky   +16 more
core   +1 more source

Pr- and Sm-Substituted Layered Perovskite Oxide Systems for IT-SOFC Cathodes

open access: yesEnergies, 2021
In this study, the phase synthesis and electrochemical properties of A/A//A///B2O5+d (A/: Lanthanide, A//: Ba, and A//: Sr) layered perovskites in which Pr and Sm were substituted at the A/-site were investigated for cathode materials of Intermediate ...
Sung Hun Woo   +7 more
doaj   +1 more source

Crystal structure of the cubic double-perovskite Sr2Cr0.84Ni0.09Os1.07O6

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2022
The crystal structure of the cubic double-perovskite Sr2Cr0.84Ni0.09Os1.07O6, grown at high pressure, was solved using intensity data measured at 113 K.
Jie Chen   +4 more
doaj   +1 more source

Eutectic bonding of sapphire to sapphire [PDF]

open access: yes, 1973
Eutectic mixture of aluminum oxide and zirconium oxide provides new bonding technique for sapphires and rubies. Technique effectively reduces possibility of contamination.
Deluca, J. J.
core   +1 more source

Immersion/Electroless Deposition of Cu on Ta [PDF]

open access: yes, 2004
Continuous Cu films are deposited on Ta by a two-step process; galvanic displacement of Ta by Cu from ammonium fluoride solutions and subsequent electroless Cu deposition from a formaldehyde-containing bath. The conditions necessary for good adhesion are
Li, Hongqi   +3 more
core   +2 more sources

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou   +10 more
wiley   +1 more source

Heterogeneous nucleation of pits via step pinning during Si(100) homoepitaxy

open access: yesNew Journal of Physics, 2017
Using scanning tunneling microscopy (STM), we investigate oxide-induced growth pits in Si thin films deposited by molecular beam epitaxy. In the transition temperature range from 2D adatom islanding to step-flow growth, systematic controlled air leaks ...
E N Yitamben   +6 more
doaj   +1 more source

Galvanic Sensor for Detecting Corrosion during Acid Cleaning of Magnetite in Steam Boilers

open access: yesMetals, 2021
A simple galvanic sensor was developed to determine the onset of iron corrosion under conditions similar to those used for removing the iron oxide (magnetite) layer from steam boilers with a hy-drochloric acid solution.
Abdullah M. Al-Mayouf   +1 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

XPS and XMCD study of Fe3O4/GaAs interface [PDF]

open access: yes, 2005
Ultrathin Fe oxide films of various thicknesses prepared by post-growth oxidation on GaAs(100) surface have been investigated with X-ray photoelectron spectroscopy (NPS), X-ray absorption spectroscopy (XAS), and X-ray magnetic circular dichroism (XMCD ...
Ahmad, E   +6 more
core   +1 more source

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