A flow injection system is reported for the determination of fluoride based on its effects on the fluorescence intensity of Al-morin complex at pH 3.0 in ethanol-warn mixture. The effect of important parameters such as excitation and emission wavelengths, pH, reagents concenkations, flow rate of the carrier stream, sample injection volume, time of measurepent and interferences are reported. ...

Objective: This study is planned to examine the possible beneficial effect of chronic administration of melatonin on ethanol drinking in rat models chronic voluntary ethanol consumption. Methods: Intermittent access 10% ethanol two-bottle-choice drinking paradigm was employed in 4 groups of rats where the rats had access to ethanol on alternate days in a week and a free access to water on all d...

background: the aim of this ex vivo study was to compare the antimicrobial effect of triantibiotic paste, 0.2% chlorhexidine gel, propolis and aloe vera on enterococcus faecalis in deep dentin. materials and methods: ninety fresh extracted single-rooted teeth were used in a dentin block model. seventy-fi ve teeth were infected with e. faecalis and divided into four experimental groups (n = 15)....

The dehydration of bioalcohols is considered one the major factors contributing to cost biofuel production. In this study, liquid phase separation water from methanol and ethanol in a siliceous MFI pervaporation membrane was studied by performing concentration gradient driven molecular dynamic (CGD-MD) simulations. CGD-MD simulations work imposing higher feed side lower permeate membrane. This ...

the effect of ethanol-water media on the synthesis of ag/tio2 nanocomposite was investigated with 0.05, 0.1 and 0.5 (wt.%) of ag content. ethanol was used as hole-scavenger enhancing the photodecomposition of ag+ ions under illumination of near-uv light. the nanocomposites were further calcined to 300˚c and 400˚c under controlled atmosphere. the synthesized nanocomposites were tested for photoc...

We propose a noncontact rapid vapor sensor to monitor an ethanol concentration in sanitizers using capillary condensation nanoparticle film. Owing effect nanopore, layered film effectively condenses of liquids. The condensed liquid provides electrical conduction due ion current through the Vapor pressure ethanol-water mixture is defined by composition ratio. When with exposed headspace from mix...

Functional compounds from black rice were extracted conventionally using organic solvents, namely ethanol-distilled water and water-acid (acetic acid a mixture of lactic acetic acid) along with distilled as control. The effectiveness each solvent was determined by analysis functional contents (anthocyanin content, flavonoids, total phenolic, antioxidant activity), pH value, the resulting color ...

a set of multicomponent perovskite oxide nanoparticles based on la1-xsrxco1-yfeyo3-δ(lscf) were prepared by a simple chemical precipitation method for application in low temperature solid oxide fuel cells (lt-sofc) as cathode materials.  the precursor materials used in this synthesis were lanthanum nitrate hexahydrate [la(no3)3.6h2o], strontium nitrate [sr(no3)2], cobalt nitrate hexahydrate [co...