Results 161 to 170 of about 11,970 (204)
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Catalysis Letters, 1998
Heterogeneous oxidation of 2-picoline over binary P–Ti, Sb–Ti, P–Sb, and V–Ti oxide catalysts was studied over the temperature range of 200–300°C. The vanadium–titanium catalysts based on titanium dioxide (anatase) were found to be the most selective for picolinic acid.
E.M. Al'kaeva +3 more
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Heterogeneous oxidation of 2-picoline over binary P–Ti, Sb–Ti, P–Sb, and V–Ti oxide catalysts was studied over the temperature range of 200–300°C. The vanadium–titanium catalysts based on titanium dioxide (anatase) were found to be the most selective for picolinic acid.
E.M. Al'kaeva +3 more
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Picolinic acid as a matrix for laser mass spectrometry of nucleic acids and proteins
Rapid Communications in Mass Spectrometry, 1994Abstract We found that picolinic acid is a very good matrix for matrix‐assisted laser desorption/ionization (MALDI) time‐of‐flight mass spectrometry of oligonucleotides, proteins and tRNA. Among the oligonucleotides, picolinic acid was shown to be effective for homo‐oligonucleotides, d(G) 40
K, Tang +5 more
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Role of zinc in blockade of excitotoxic action of quinolinic acid by picolinic acid
Amino Acids, 1998This study examined whether picolinic acid (PIC) inhibits quinolinic acid (QUIN)-induced excitotoxicity through zinc chelation. Injection of QUIN into the nucleus basalis magnocellularis significantly depleted cortical choline acetyltransferase activity 7 days post injection and PIC inhibited this response. Zinc augmented the QUIN- but not NMDA-induced
K H, Jhamandas +3 more
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Journal of Organometallic Chemistry, 1991
Two types of complexes of diorganotin picolinates (i) R2Sn(Pic)2 [2:1] and (ii) [R2SnPic]2O [1:1] and of diorganotinpicolinate N-oxides (i) R2Sn(PicO)2 [2:1] and (ii) [R2SnPicO]2O [1:1] (R = CH3, n-C4H9, n-C8H17, C6H5CH2) have been prepared by reacting picolinic acid and picolinic acid N-oxide with diorganotin oxide in 2:1 and 1:1 ligand:metal molar ...
G.K. Sandhu, N.S. Boparoy
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Two types of complexes of diorganotin picolinates (i) R2Sn(Pic)2 [2:1] and (ii) [R2SnPic]2O [1:1] and of diorganotinpicolinate N-oxides (i) R2Sn(PicO)2 [2:1] and (ii) [R2SnPicO]2O [1:1] (R = CH3, n-C4H9, n-C8H17, C6H5CH2) have been prepared by reacting picolinic acid and picolinic acid N-oxide with diorganotin oxide in 2:1 and 1:1 ligand:metal molar ...
G.K. Sandhu, N.S. Boparoy
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Zinc Absorption in Cattle with a Dietary Picolinic Acid Supplement
The Journal of Nutrition, 1981The effect of picolinic acid and hydroxyquinolines in intestinal zinc absorption of cattle was studied. In contrast to reports of the absorption in rat and in man, picolinic acid did not enhance zinc absorption in cattle. In two calves suffering from Adema disease, the bovine parallel to Acrodermatitis enteropathica, hydroxyquinoline supplementation ...
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Macrophage Activating Properties of The Tryptophan Catabolite Picolinic Acid
2003Recent studies have suggested a role for aminoacid catabolites as important regulators of macrophage (Mphi) activities. We reported previously that picolinic acid (PA), a tryptophan catabolite produced under inflammatory conditions and a costimulus with IFNgamma of Mphi effector functions, is a selective inducer of the Mphi inflammatory protein-1alpha (
Maria Carla, Bosco +5 more
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Influence of Dietary Picolinic Acid on Mineral Metabolism in the Rat
Annals of Nutrition and Metabolism, 1988Male rats were fed isonitrogenous, isocaloric diets containing different amounts of dietary zinc and picolinic acid (PA) (25, 60, 120 ppm Zn, 0, 20, 40, 60 mmol PA/kg diet) and balance collections of urine and faeces made over a 4-day period. Rats fed 25 ppm Zn were in negative Zn and Cu balance during the experiment.
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Fresenius' Zeitschrift f�r Analytische Chemie, 1958
Palladium has been determined from palladium-picolinate or palladium-quinaldinate precipitate by dissolving it in potassium nickel cyanide and then titrating the displaced nickel by disodium salt of ethylenediamine tetraacetic acid, using a solid mixture of murexide and sodium chloride as the indicator. The method is very accurate and can be applied to
A. K. Majumdar, J. G. Sen Gupta
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Palladium has been determined from palladium-picolinate or palladium-quinaldinate precipitate by dissolving it in potassium nickel cyanide and then titrating the displaced nickel by disodium salt of ethylenediamine tetraacetic acid, using a solid mixture of murexide and sodium chloride as the indicator. The method is very accurate and can be applied to
A. K. Majumdar, J. G. Sen Gupta
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The Preparation of Isonicotinic and Picolinic Acids
Journal of the American Chemical Society, 1952D. J. Cook, Roland S. Yunghans
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