Results 41 to 50 of about 179,969 (212)

Synthesis of new azole phosphonate precursors for fuel cells proton exchange membranes [PDF]

open access: yes, 2015
Herein we present the synthesis and characterization of new phosphonate-, bisphosphonate- and hydroxybisphosphonatebenzimidazole derivatives substituted at the N-1 position and new regioisomers phosphonate-, bisphosphonate-, and ...
Rangel, C. M.   +2 more
core   +1 more source

Analyzing the impact of Temperature on Proton Exchange Membrane Fuel Cell performance Using Matlab

open access: yesSukkur IBA Journal of Emerging Technologies, 2018
The Proton Exchange Membrane Fuel cell (PEMFC) is an electrochemical engine that converts the chemical energy of hydrogen into electrical energy. It receives hydrogen at anode and oxygen at the cathode side, due to chemical reaction at electrodes ...
Aftab Ahmed Khuhro
doaj   +1 more source

Fabrication of bifunctional membrane electrode assemblies for unitised regenerative polymer electrolyte fuel cells [PDF]

open access: yes, 2006
Bifunctional membrane electrode assemblies have been fabricated using a screen printing technique, which demonstrate a repeatable and stable operation to cell current and voltages.
Harrison, DJ, Pettersson, J, Ramsey, BJ
core   +1 more source

Membrane sodium-proton exchange and primary hypertension. [PDF]

open access: yesHypertension, 1993
Recent studies have revealed that an enhancement of sodium-proton exchange is a frequently observed ion transport abnormality in essential hypertension. An altered antiport activity not only is measurable in blood cells of hypertensive subjects ex vivo but also is detectable in skeletal muscle in vivo. Several lines of argument suggest that the altered
Rosskopf, D., Düsing, R., Siffert, W.
openaire   +3 more sources

Flexible 5-in-1 Microsensor Embedded in the Proton Battery for Real-Time Microscopic Diagnosis

open access: yesMembranes, 2021
The proton battery possesses water electrolysis, proton storage and discharging functions simultaneously, and it can be manufactured without expensive metals.
Chi-Yuan Lee   +4 more
doaj   +1 more source

Sulfonasi Film Cptfe Tercangkok Stirena Untuk Membran Penghantar Proton Sel Bahan Bakar [PDF]

open access: yes, 2007
Sulfonation of cPTFE Film grafted Styrene for Proton Exchange Membrane Fuel Cell. Sulfonation of γ-rayiradiated and styrene-grafted crosslinked polytetrafluoroethylene film (cPTFE-g-S film) have been done. The aim of theresearch is to make hydropyl
Yohan, Y. (Yohan)
core  

Materials for electrocatalysts in proton exchange membrane fuel cell: A brief review

open access: yesFrontiers in Energy Research, 2023
Energy is a requisite factor for technological advancement and the economic development of any society. Currently, global energy demand and supply largely rely on fossil fuels. The use of fossil fuels as a source of energy has caused severe environmental
A. S. Alabi   +4 more
doaj   +1 more source

Na+-H+ exchange activity in brush-border membrane vesicles isolated from chick small intestine [PDF]

open access: yes, 1995
This study was undertaken to investigate the presence of a Na+{single bond}H+ antiporter in brush-border membrane vesicles (BBMV) isolated from chick small intestine.
Cano Rodríguez, María Mercedes   +2 more
core   +1 more source

Using small molecules to facilitate exchange of bicarbonate and chloride anions across liposomal membranes [PDF]

open access: yes, 2009
Bicarbonate is involved in a wide range of biological processes, which include respiration, regulation of intracellular pH and fertilization. In this study we use a combination of NMR spectroscopy and ion-selective electrode techniques to show that the ...
A Fürstner   +41 more
core   +1 more source

Uptake of Ca2+ by isolated secretory vesicles from adrenal medulla [PDF]

open access: yes, 1982
Intact secretory vesicles isolated from bovine adrenal medulla contain 94 nmol Na+ per mg of protein, and Ca2+ influx into the vesicles is inhibited by increasing concentrations of extravesicular Na+ (but not of K+, Li+ or choline+) or by addition of the
Bashford   +19 more
core   +1 more source

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