Abstract Pt-metal oxide nanocomposites are classified as an alternative promising catalyst besides Pt-Ru nanoalloys for electrochemical methanol oxidation reaction (MOR), and yet the relevant enhancement mechanism MOR remains largely elusive in terms of functions pathways. Herein, interface-rich Pt-SnO2 nanoflakes supported on reduced graphene have been prepared employed a model such study. X-r...

background evaluation of the craniofacial bones is the oldest method to measure the facial proportion ratio in orthodontics. objectives the purpose of this study was to evaluate the effect of emboss enhancement on the reliability of landmark identification in digital lateral cephalometric images. materials and methods ten digital lateral cephalograms were selected from the archive of an oral an...

INTRODUCTION In an effort to improve air quality and decrease dependence on petroleum, the federal government, industry, and other groups have encouraged development of alternative fuels such as methanol to substitute for gasoline or diesel fuel. Methanol is also a candidate to provide the hydrogen for fuel cells, which are being developed for a variety of power sources (including motor vehicle...

abstract background: herbal distillates have been used for many centuries as drinks, flavors, and herbal medicine in iran, especially in the city of urmia. recently, some studies claimed the presence of methanol in different types of herbal distillates. methanol is a highly toxic compound which can cause acute or chronic toxicity in humans. acute poisoning with methanol can cause different comp...

The use of alcohol blends in direct alcohol fuel cells may be a more environmentally friendly and less toxic alternative to the use of methanol alone in direct methanol fuel cells. This paper assesses the behaviour of a direct methanol fuel cell fed with aqueous methanol, aqueous ethanol and aqueous methanol/ethanol blends in a long term experimental study followed by modelling of polarization ...

Mycobacterium smegmatis cells produce [3H]methanol when incubated with [methyl-3H]methionine. The methanol is derived from S-adenosylmethionine rather than methyltetrahydrofolate. M. smegmatis cells carboxymethylate several proteins, and some of the methanol probably results from their demethylation, but most of the methanol may come from an unidentified component with a high gel mobility. Alth...

BACKGROUND Methanol has become an alternative fuel for gasoline, which is facing a rapidly rising world demand with a limited oil supply. Methanol-gasoline has been used in China, but phase stability and vapor lock still need to be resolved in methanol-gasoline applications. In this paper, a series of tartaric esters were synthesized and used as phase stabilizers and saturation vapor pressure d...

The enzymes involved in methanol degradation by Desulfotomaculum kuznetsovii, a thermophilic, methanol utilizing sulfate reducer were studied. Low NAD-dependent and dye-linked alcohol dehydrogenase activities were detected with methanol in cell free extracts of D. kuznetsovii grown on methanol. However, activities with ethanol as electron donor were 10 times higher. The alcohol dehydrogenase fr...

The aim of this study was to evaluate the anti-oxidant activity of the flowers of the plant Vernonia cinerea (Family: Asteraceae). Flowers extracts of V. cinerea in different four organic solvents (methanol, hexane, chloroform and ethyl acetate) and water were assayed for antioxidant activity using FRAP assay. All of these extracts were found to possess significant antioxidant activity at 5mg/m...

1. Abstract Pt-Ru/C catalyst has been applied extensively in direct methanol fuel cells for methanol electrochemical oxidation. In this study, a model for electrochemical kinetics of methanol has been developed for electrocatalyst Pt-Ru/C. The single cell performance of DMFC and AC impedance analysis were measured. The methanol crossover problem still remains a challenge for the applications of...