Results 21 to 30 of about 1,031,082 (303)

Ascorbate maintains a low plasma oxygen level [PDF]

open access: yesScientific Reports, 2020
Abstract In human blood, oxygen is mainly transported by red blood cells. Accordingly, the dissolved oxygen level in plasma is expected to be limited, although it has not been quantified yet. Here, by developing dedicated methods and tools, we determined that human plasma pO 2
Injarabian, Louise   +5 more
openaire   +5 more sources

Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete

open access: yesActa Polytechnica CTU Proceedings, 2023
The effect of atmospheric and low-pressure plasma modification on polypropylene (PP) microfibers was examined. Mechanical changes on the microfiber surfaces were observed using scanning electron microscopy (SEM). Next, wettability was measured using the
Jakub Ďureje   +4 more
doaj   +1 more source

Introduction of functional groups on polyethylene surfaces by a carbon dioxide plasma treatment [PDF]

open access: yes, 1995
Poly(ethylene) (PE) films were treated with a carbon dioxide (CO2) plasma to study the formation of oxygen-containing functional groups at the surface. Modified and nonmodified films were characterized by X-ray photoelectron spectroscopy (XPS) and water ...
Feijen, Jan   +3 more
core   +2 more sources

Resistance abilities of (100)/(111)-faceted diamond films against oxygen plasma etching

open access: yesJournal of Aeronautical Materials, 2019
The resistance abilities of (100) and (111)-faceted diamond films against oxygen plasma, 100 μm as film thickness, were investigated by the microwave power chemical vapor deposition (MPCVD) technique.
SUN Qi   +6 more
doaj   +1 more source

Formation of the oxygen torus in the inner magnetosphere: Van Allen Probes observations [PDF]

open access: yes, 2015
We study the formation process of an oxygen torus during the 12–15 November 2012 magnetic storm, using the magnetic field and plasma wave data obtained by Van Allen Probes.
De Pascuale, S.   +11 more
core   +3 more sources

Selective Electron Beam Patterning of Oxygen‐Doped WSe2 for Seamless Lateral Junction Transistors

open access: yesAdvanced Science, 2022
Surface charge transfer doping (SCTD) using oxygen plasma to form a p‐type dopant oxide layer on transition metal dichalcogenide (TMDs) is a promising doping technique for 2D TMDs field‐effect transistors (FETs).
Tien Dat Ngo   +9 more
doaj   +1 more source

Surface treatment of a polypropylene film with a nitrogen DBD at medium pressure [PDF]

open access: yes, 2008
Surface treatment of polymer films is usually necessary to improve surface wetting and adhesion characteristics. Traditional liquid chemical processes have several disadvantages in contrast to dry finishing processes, like plasma technology.
De Geyter, Nathalie   +6 more
core   +3 more sources

Surface modification of hydrophobic polymers for improvement of endothelial cell-surface interactions [PDF]

open access: yes, 1992
The aim of this study is to improve the interaction of endothelial cells with polymers used in vascular prostheses. Polytetrafluoroethylene (PTFE; Teflon) films were treated by means of nitrogen and oxygen plasmas.
A Dekker   +16 more
core   +2 more sources

Surface Modification of Activated Carbon Pellets by Oxygen Plasma and Their Ionic Dye Adsorption Behavior [PDF]

open access: yes대한환경공학회지
In this study, the surface of pitch-based activated carbon pellet was functionalized with oxygen moieties via oxygen plasma, and the adsorption characteristics of ionic dyes were evaluated as a function of the functionalization degree.
Jong Hyun Lee   +4 more
doaj   +1 more source

Oxygen plasma modification of polyurethane membranes

open access: yesJournal of Materials Science: Materials in Medicine, 2002
Polyurethane membranes were prepared under nitrogen atmosphere by using various proportions of toluene diisocyanates (TDI) and polypropylene-ethylene glycol (P) with addition of no other ingredients such as catalysts, initiator or solvent in order to achieve medical purity. Effects of composition on mechanical properties were examined.
Yesim, Ozdemir   +2 more
openaire   +2 more sources

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