Author details The Institute of Materials Technology, Pusan National University, Busan 46241, South Korea. National Core Research Center for Hybrid Materials Solution, Pusan National University, Busan 46241, South Korea. School of Convergence Science, Pusan National University, Busan 46241, South Korea. School of Materials Science and Engineering, Pusan National University, Busan 46241, South K...

Under iron-limiting conditions, Pseudomonas aeruginosa PAO1 secretes a fluorescent siderophore called pyoverdine (Pvd). After chelating iron, this ferric siderophore is transported back into the cells via the outer membrane receptor FpvA. The Pvd-dependent iron uptake pathway requires several essential genes involved in both the synthesis of Pvd and the uptake of ferric Pvd inside the cell. A p...

Cost reduction and high efficiency are the mayor challenges for sustainable H2 production via proton exchange membrane (PEM) electrolysis. Titanium-based components such as bipolar plates (BPP) have the largest contribution to the capital cost. This work proposes the use of stainless steel BPPs coated with Nb and Ti by magnetron sputtering physical vapor deposition (PVD) and vacuum plasma spray...

The automotive industry is a pioneer in solutions that meet market expectations. However, the industry, some less environmentally friendly technologies are still used, such as electroplating. Due to legislative restrictions several countries, thin coatings made vacuum have been replacing traditionally by electroplating, mainly decorative terms. This work more focused on use of these for optical...

Residual stresses of physical vapor deposition (PVD) hard coatings can be measured using X-ray diffraction (XRD) methods under either conventional d-sin2 ψ mode or glancing incident (GIXRD) mode, in which substantial uncertainties exist depending on the applied diffraction parameters. This paper reports systematic research on the effect of the two analytical modes, as well as the anisotropic el...

The infiltration of molten calcium, magnesium, and alumino-silicates (CMAS) into jet engine thermal barrier coatings (TBCs) causes an increased stiffness a destructive phase destabilization eventually leading to thermomechanical failure. Using 3D confocal Raman spectroscopy, the extent thermochemical degradation was identified by mapping monoclinic volume fraction (mPVF) throughout standard EB-...

The prevalence of peripheral vascular disease (PVD) was determined in 296 Japanese diabetics (mean age 55.2 years, range 19 to 79 years), using a Doppler ultrasonic technique. PVD was diagnosed in 11.5% of the diabetic patients (7.6% females, 14.6% males). In 88% of all patients with PVD, asymptomatic impaired circulation was diagnosed. There was a clear increase of PVD with age. It was found t...

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