An analytical and empirical-based 1-D, non-isothermal, steady-state model for anion exchange membrane fuel cell capable of capturing two-phase phenomena is presented in this study. Coupled multi-physics including mass charge transport, electrochemical reactions, heat transfer, water transport are considered the simulated results compared to experimental data. To better represent actual material...

The membrane transporter anion exchanger 1 (AE1), or band 3, is a key component in the processes of carbon-dioxide transport in the blood and urinary acidification in the renal collecting duct. In both erythrocytes and the basolateral membrane of the collecting-duct α-intercalated cells, the role of AE1 is to catalyze a one-for-one exchange of chloride for bicarbonate. After decades of biochemi...

Studies of two different bacterial anion exchange proteins (antiporters) led us to conclude that both reductionist and integrative approaches contribute to progress in understanding membrane biology. We have used a reductionist perspective in applying cysteine scanning mutagenesis to probe individual amino acid positions of UhpT (uptake of hexose phosphate transporter), the carrier responsible ...

A novel hybrid fuel cell is described using at least one electrode operating at high pH in an effort to use the high conductivity of Nafion and exploit the electrochemical advantages of high-pH operation. The electrochemical behavior of a hybrid anion exchange membrane (AEM)/proton exchange membrane (PEM) junction and corresponding fuel cell are presented. Two AEM/PEM junctions and fuel cells h...

Anion exchange membrane fuel cells (AEMFCs) are important alternatives to proton (PEMFCs). However, AEMFCs involve slow hydrogen oxidation reaction (HOR) on the anode. Catalysts improve HOR were developed by control of ruthenium nanoparticle size, alloying with iridium, and surface modification metal nanoparticles, resulting in enhanced catalytic activity optimizing binding energy bifunctionali...

Selenium is an essential trace element required by the fetus for normal growth, therefore knowledge on the placental transport of Se is important in the context of fetal nutrition. Recent work in this laboratory has shown that selenate is a competitive inhibitor of sulphate uptake by vesicles prepared from the brush-border membrane of the syncytiotrophoblast of the human term placenta (Shennan ...