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Quantitative Structure-Retention Relationships of Mixed Tris-beta-Diketonato Complexes on Polyacrylonitrile Sorbent
(Vieweg, Wiesbaden, 2008)
Quantitative structure-retention relationships models have been developed for thin-layer chromatographic parameters of 30 mixed beta-diketonato complexes. In order to obtain predictive and interpretative models, we ...
Intraoperative anaphylactic shock in a child with no history of type I hypersensitivity
(Tehran Univ Medical Sciences, Tehran, 2008)
Natural rubber latex is the second most implicated agent in intraoperative anaphylactic reactions. This report describes a case of intraoperative anaphylaxis occurring in a non-atopic fourteen-year-old girl undergoing ...
Generation and intermolecular additions of pyridylmethyl radicals
(Georg Thieme Verlag Kg, Stuttgart, 2008)
2-, 3-, or 4-Pyridylmethyl radicals can be made to add to nonactivated alkenes to give a variety of otherwise inaccessible pyridine derivatives. Bicyclic structures can be obtained by combining the radical addition with ...
Use of different salt solutions in salting-out TLC of Co(III) complexes on silica gel
(Vieweg, Wiesbaden, 2008)
Saturated aqueous solutions of 28 different salts have been studied as a potential mobile phases for salting-out thin-layer chromatography, on silica gel, of a series of four mixed bis-aminocarboxylato cobalt(III) complexes. ...
Radical, one-step approach to o-chlorophenyl thioethers from xanthates. A rapid access to vinylsilanes
(Amer Chemical Soc, Washington, 2008)
Xanthates have been readily converted into o-chlorophenyl thioethers using a one-step procedure conducted under radical conditions. In some selected cases, these aryl thioethers were successfully oxidized to the corresponding ...
Influence of Pressure and Time on Extraction Process Using Supercritical Co2
(Technical Faculty, Bor-Serbia, Bor, 2008)
The supercritical fluid extraction (SFE) by carbon dioxide (CO2) of Salvia officinalis L. was investigated. SFE by CO2 was performed at different pressure (80, 100, 150, 200 and 300 bar) and constant temperature of 40 ...
Inorganic-inorganic nanocomposite: Surface and conductive properties
(Pergamon-Elsevier Science Ltd, Oxford, 2008)
Our previous experiences with incorporation of polyoxometalates (POMs) ill different substrates have been very successful, because new nanocomposites with better conductive, catalytical and biochemical characteristics have ...
Purification and properties of major midgut leucyl aminopeptidase of Morimus funereus (Coleoptera, Cerambycidae) larvae
(Elsevier Science Inc, New York, 2008)
The major leucyl aminopeptidase (LAP) from the midgut of Morimus funereus larvae was purified and characterised. Specific LAP activity was increased 292-fold by purification of the crude midgut extract. The purified enzyme ...
Purification and properties of midgut alpha-amylase isolated from Morimus funereus (Coleoptera : Cerambycidae) larvae
(Elsevier Science Inc, New York, 2008)
Using soluble starch as a substrate five isoforms of alpha-amylase were identified in a crude extract of Morimus funereus larvae. The main alpha-amylase (termed AMF-3) was purified by gel filtration chromatography and anion ...
Interpretative optimization and artificial neural network modeling of the gas chromatographic separation of polycyclic aromatic hydrocarbons
(Elsevier Science Bv, Amsterdam, 2008)
An interpretative strategy (factorial design experimentation + total resolution analysis + chromatogram simulation) was employed to optimize the separation of 16 polycyclic aromatic hydrocarbons (PAHs) (naphthalene, ...