Results 21 to 30 of about 2,115,588 (319)

Impact of Hydrophobic and Electrostatic Forces on the Adsorption of Acacia Gum on Oxide Surfaces Revealed by QCM-D

open access: yesColloids and Interfaces, 2023
The adsorption of Acacia gum from two plant exudates, A. senegal and A. seyal, at the solid-liquid interface on oxide surfaces was studied using a quartz crystal microbalance with dissipation monitoring (QCM-D).
Athénaïs Davantès   +3 more
doaj   +1 more source

The Temperature Sensitivity of the Piezoelectric Thickness Shear Mode of α-GeO2 Single Crystals

open access: yesCrystals
This paper focuses on identifying temperature-compensated Y-cuts (using a Cartesian coordinate system) in a piezoelectric α-GeO2 single crystal, which is isostructural–quartz α-SiO2.
Philippe Papet, Pascale Armand
doaj   +1 more source

Analysis and optimization of mass percentage of zycoprint polymer and abrasives in achieving stability of suspension mixture in abrasive water jet machining

open access: yesManufacturing Review, 2023
The suspension parameters are vital in the suspension-type abrasive water jet (AWJ) machining of several engineering materials, more so in difficult-to-cut materials, because it significantly influences the suspension stability and sedimentation ...
Maurya Preeti   +2 more
doaj   +1 more source

Oxidative Shielding or Oxidative Stress? [PDF]

open access: yesThe Journal of Pharmacology and Experimental Therapeutics, 2012
In this review I report evidence that the mainstream field of oxidative damage biology has been running fast in the wrong direction for more than 50 years. Reactive oxygen species (ROS) and chronic oxidative changes in membrane lipids and proteins found in many chronic diseases are not the result of accidental damage.
openaire   +2 more sources

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

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

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