Some studies of the interconversion of d-glucono-1,5-lactone, d-gluconic acid and d-glucono-1,4-lactone have been undertaken. High-performance liquid chromatography on reversed-phase supports was successfully used to resolve these components in water solution. There are no interactions between t...

Gelation properties of pectic polysaccharide extracted with ammonium oxalate from soybean hulls assisted by microwave were seldom studied. Water mobility in soy hull pectic polysaccharide (SHPP) was firstly studied by low field NMR. d-Glucono-1,5-lactone (GDL) and sucrose both could decrease spi...

The structure of tetra-O-(tert-butyldimethylsilyl)-d-glucono-1,4-lactone made by the silylation of d-glucono-1,5-lactone has been confirmed by single-crystal X-ray analysis.

The effect of PEG dispersant on the magnetic separation of magnetite (Fe3O4) synthesized from ferrous sulfate solution via co-precipitation method with calcium hydroxide as the precipitant was investigated. The results indicated that a PEG dispersant could significantly affect Fe3O4 recovery. Ad...

In this research, aqueous ferrous carbonate, FeCO3, was studied in a batch reactor designed to maintain rigorously anoxic conditions in the absence of reducing agents. The precipitation kinetics were measured from 27 to 80°C and were found to be approximately 100 times slower than any measured ...

In this work, direct As(III) removal without pre-oxidation by the in-situ generated Fe(III) hydroxide derived from ferrous sulfate on the surface of calcium carbonate was investigated. The coagulation sediments were characterized by XPS, Zeta potential, AFM and SEM, respectively and the mechanis...

A scientifically based disposal of all industrial and municipal wastes is the only solution for the problem of the rapid and constant increase in environmental pollution and the associated climate change, with inevitable catastrophic consequences for our planet. The present study proposes such s...

Landfill Leachate is a heavily contaminated wastewater. MFCs (Microbial Fuel cells) are unique bioreactors, which utilize the catalytic activity of microbes for converting the chemical energy stored in organic-rich streams for bioelectricity production. MFCs represent an auspicious technology to...

Sedimentological, geochemical and petrographic studies were carried out on carbonate-bearingargillites outcropping at the southeastern flank of Mount Cameroon (Likomba) to determine thelithofacies and their associations, major element geochemistry and mineralogy. This was in an attempt to establ...

Eighty female Holstein calves were used to examine the effects of high amounts of added dietary Fe as ferrous carbonate on performance of young dairy animals. Experimental starters containing either 0, 500, 1000, 2000, or 4000 ppm supplemental Fe as ferrous carbonate were fed for 8 wk beginning ...

Ferrous carbonate was precipitated from the reaction of ferrous sulfate and sodium carbonate in an aqueous medium. The precipitate was calcined at different eating rates (2, 5 and 10 °C/min, respectively) up to 500 °C and the iron oxides produced were found to be magnetic. X-ray diffraction st...

Bacterial iron oxide reduction has been extensively studied over recent decades with the aim of improving knowledge of Fe-bearing mineral transformations. Chemically synthesized Fe(III) oxides such as ferrihydrite or goethite have mainly been used as iron oxide models but very few studies have f...

A study was made of hydro-cracking of commercial ditolylmethane on a cobalt-molybdenum catalyst.Conditions of hydro-cracking to form chiefly p-xylene were: temperature 450°, pressure 50 atm. Under these conditions a p-xylol yield of up to 17% of the catalysate was obtained with an overall conve...

A toxicologic and dermatologic review of alpha-iso-methylionone when used as a fragrance ingredient is presented.

For the first time, we disclose the medicinal chemistry efforts at Neurogen Corporation that led to the discovery of the clinical phase I compound NGD-4715 (7), a selective, brain penetrant, orally bioavailable melanin-concentrating hormone receptor 1 antagonist. We discuss the optimization of a...

Manganese (Mn) may interfere with iron regulation by altering the binding of iron regulatory proteins (IRPs) to their response elements found on the mRNA encoding proteins critical to iron homeostasis. To explore this, the effects of 24-h in vitro manganese exposure (1, 10, 50, and 200 μM Mn) o...

A phosphatase preparation has been partially purified from beef brain which catalyzes the hydrolysis of phosphohydroxypyruvic acid, β-glycerophosphate, glucose-6-phosphate, and fructose-6-phosphate. The pH optimum for the first two substrates is in the range of 7.5. Magnesium ions are required ...

Coordination of mitochondrial and nuclear activities is vital for cellular homeostasis, and many signaling molecules and transcription factors are regulated by mitochondria-derived reactive oxygen species (ROS) to carry out this interorganellar communication. The tumor suppressor p53 regulates m...

This study investigated the surface characteristics and in vitro biocompatibility of a titanium (Ti) oxide layer incorporating the manganese ions (Mn) obtained by hydrothermal treatment with the expectation of utilizing potent integrin–ligand binding enhancement effect of Mn for future applicat...

Paramagnetic manganese can be employed as a calcium surrogate to sensitize the magnetic resonance imaging (MRI) technique to the processing of calcium during the bone formation process. At low doses, after just 48 h of exposure, osteoblasts take up sufficient quantities of manganese to cause mar...