Photocatalysis is an effective technology for the removal of organic pollutants from wastewater. Artificial light sources are still required for continuous operation, representing a large fraction of the operating costs. Thus, energy efficiency becomes a key issue that needs optimization. In thi...

Titania nanoparticle-loaded mesoporous silica has been studied as a promising photocatalytic material for the removal of organic pollutants. However, the synthesis methods and photodegradation properties have not yet been optimized. In this study, titania-loaded mesoporous silica (SBA-15) was sy...

Use of hybridized transition-metal oxides nanostructures with a shell coating show promise for improving the electrochemical performance of sodium-ion batteries. Herein, a novel type of designed sodium vanadate @ polypyrrole (Na5V12O32@PPy) nanocomposites with a synergetic core-shell structure w...

In the present study, we have reported a comprehensive assessment of interactional behavior between the surface active ionic liquid (SAIL) 1-butyl-3-methylimidazolium dodecylbenzene sulfonate [C4mim][DBS] and cationic polyelectrolyte poly(diallyldimethylammonium chloride) [PDADMAC] solution in a...

The synergistic inhibition effect of rare earth cerium nitrate and sodium dodecylbenzenesulfonate (DBS) on corrosion of AA5052 aluminium alloy in 3 wt.% NaCl solution was investigated by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curve, scanning electron microscop...

In this study, an understanding of interactions among the anionic surface active ionic liquid (SAIL) 1-butyl-3-methylimidazolium dodecylbenzenesulfonate [C4mim][DBS] and non-ionic low molecular weight polymer polyethylene glycol 400 (PEG 400) in aqueous solution has been developed systematically...

Here, the complex formation among anionic surface active ionic liquid (SAIL) 1-butyl-3-methylimidazolium dodecylbenzenesulfonate [C4mim][DBS] and non-ionic polymer polyvinylpyrollidone (PVP) in aqueous solution has been studied. An attempt has been made to study the interactions in bulk and at i...

A ternary phase diagram of the system of 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4), sodium dodecylbenzenesulfonate (SDBS) and water using ocular estimate and turbidity method was drawn based on experimental data at 298.2 K. We got a narrow aqueous two-phase region near the side o...

Thermoanaerobacter thermohydrosulfuricus Rt8.B1 catabolized xylose by the pentose phosphate pathway, and xylose isomerase and xylulokinase were inducible. The uptake of xylose was by two low-affinity, inducible systems. Both systems were resistant to the protonophore, tetrachlorosalicylanilide, ...

The rate of ethanol production and the ethanol concentrations attained by the most promising xylose-fermenting yeats, Pichia stipitis, Candida shehatae, and Pachysolen tannophilus, compare poorly with that of commercial ethanol fermentation by non-xylose-fermenting Saccharomyces cerevisiae using...

The formation of most connective tissue polysaccharides is initiated by transfer of d-xylose from UDP-d-xylose to specific serine residues in the core proteins of the putative proteoglycans. The substrate specificity of the xylosyltransferase catalyzing this reaction has not yet been examined in...

We found that during d-xylose fermentation to ethanol by Pachysolen tannophilus the amount of xylitol produced decreased dramatically while CO2 increased when the temperature was raised from 30 to 37°C. Acetaldehyde was detected only at 37°C. However, no significant change in the amount of eth...

Summary1.D-xylose-14C was used to measure oral xylose absorption in the investigation of malabsorption syndromes. The concentration of D-xylose-14C present in the 1 and 2 hour serum samples and the quantity of D-xylose and D-xylose-14C excreted in the urine in 5 hours were used as indices of xyl...

The efficacy of d-xylose testing in clinical situations has been reviewed in the light of recent kinetic studies. The standard 25-g d-xylose test in adults, based on analysis of a 5-h urine collection and a 1-h serum sample, discriminates between normal subjects and patients with proximal small ...

Candida mogii ATCC 18364 was selected for a xylitol producer (YPS=0.62 g/g) from 11 strains of d-xylose utilizing yeasts. Systematic kinetic studies are presented for growth and xylitol formation in synthetic medium using d-xylose as the carbon and energy source. Xylitol is produced from d-xylos...

A gene bank of the d-xylose utilizing, cellulolytic Xanthomonas (XA1-1) DNA, inserted into the Hind III site of pKT230, was screened for clones which encoded d-xylose isomerase. One clone (pND70) was identified which complemented d-xylose isomerase negative mutants of Escherichia coli and this c...

The Escherichia coli d-xylose isomerase (d-xylose ketol-isomerase, EC 5.3.1.5) gene, xylA, has been cloned on various E. coli plasmids. However, it has been found that high levels of overproduction of the d-xylose isomerase, the protein product of the xylA gene, cannot be accomplished by cloning...

The distribution of radioactivity in the three- and four-carbon saccharinic acids, lactic acid and 2,4-dihydroxybutyric acid, obtained from d-xylose-1-14C, d-glucose-1-14C, and d-glucose-6-14C, was measured. The relative importance of the various mechanisms for forming 2,4-dihydroxybutyric acid ...

The structural analogy of 1,3-dicarbonyl compounds with 2-hydroxybenzencarbonyl compounds allowed to do an analysis towards the reactivity with 3-aminophenylboronic acid, in order to evaluate the synthesis of macrocyclic boron compounds having calixarene like structures. The results indicate tha...

Reaction of 1,3-dicarbonyl compounds with alcohols or olefins in the presence of catalytic amounts of electron-deficient [Ru(salophen)OTf] produced α-alkylated 1,3-dicarbonyls under solvent-free conditions. Different substituted benzylic alcohols were efficiently reacted with 2,4-pentanedione o...