Current Physical Chemistry - Volume 5, Issue 3, 2015

Thin film La0.9Sr0.1Ga0.8Mg0.2O3-δ (LSGM) has been successfully fabricated as an electrolyte layer on an anode-supported substrate at 700°C with the pulsed laser deposition (PLD) technique. Sr2Fe1.5Mo0.5O6-δ (SFM) as both anode and cathode materials is discussed in this work. As the anode part, SFM is ball-milled with different weight ratios (10, 20, 30 wt %) of starch as pore former to achieve an anode layer with adeq Read More

Background: Ancient bacterial enzymes have remarkable similarity with modern bacterial and mammalian enzymes. The AF2372 and MJ0109 gene products that cleave two sugars inositol-1-phosphate and fructose 1,6, bisphosphate are hyperthermophilic enzymes that are remarkably stable and easily purified. These ancient bacterial enzymes are highly homologous with human enzymes that cleave the same substrates. Meth Read More

Structural characterization of powdered samples of β-chitin and chitosan is reported. β-chitin extracted from squid pens (Doryteuthis spp.) and chitosan produced by submitting beta-chitin to high intensity ultrasonication while suspended in 40% aqueous sodium hydroxide (NaOH). The samples were analyzed by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and n Read More

SrSnO3@TiO2 and SrSnO3@ZrO2 core-shell nanoparticles were synthesized using the modified-Pechini method by impregnating the shell material on commercial materials (core) using a polymeric resin. The formation of SrSnO3 on TiO2 was confirmed by Xray diffraction and infrared spectroscopy, while superposition with ZrO peaks/bands occurred making this evaluation more difficult. Micrographs obtained using field Read More

We present a review on fuel cells with emphasis on solid oxide fuel cells (SOFCs). We give an overview of proton exchange membrane, alkaline, phosphoric acid, molten carbonate and direct methanol fuels cells. For SOFCs we discuss electrolytes, anodes, cathodes, interconnects, fabricating processes, materials alternatives and industry. We also give an overview on thermodynamics, electrochemistry and kinetics of fuel cell r Read More

The neurogeneration observed in Alzheimer's disease (AD) is due to the formation of two abnormal structures in the brain of patients with this disease, i.e. neurofibrillary tangles and amyloid plaques. The amyloid plaques are formed by fragments of insoluble beta-amyloid peptides generated by cleaving the amyloid precursor protein (APP) by the beta-secretase enzyme (BACE 1). To date there are no marketed drug Read More

ZnO is a semiconductor material largely employed in the development of electronic and optical devices, as well as photocatalytic processes due to its single electronic property. Calculations based on DFT/B3LYP were performed to evaluate the electronic, optical and structural properties of S-doped ZnO material at 6.25 %. The theoretical results indicate the improvement of electronic and optical properties by decreasing the b Read More