Πλοήγηση ανά Θέμα "nuclear magnetic resonance spectroscopy"
Αποτελέσματα 1-20 από 20
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Authenticity of the traditional Cypriot spirit "zivania" on the basis of 1H NMR spectroscopy diagnostic parameters and statistical analysis
(2005)A previous publication (Kokkinofta et al. J. Agric. Food Chem. 2003, 51, 6233-6239) discussed the use of inductively coupled plasma spectroscopy to differentiate between the traditional Cypriot alcoholic beverage zivania ...
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Black cohosh (Cimicifuga racemosa L.) protects against menadione-induced DNA damage through scavenging of reactive oxygen species: Bioassay-directed isolation and characterization of active principles
(2002)The roots/rhizomes of Cimicifuga racemosa L. (Nutt.) (black cohosh) have traditionally been used to treat menopausal symptoms through an unknown mechanism of action. In an effort to determine if black cohosh had additional ...
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Chemometric characterization of the cypriot spirit "Zivania"
(2005)In 42 alcoholic beverages produced in Cyprus and other countries, 26 chemical and physical-chemical variables were determined by HPLC and GC chromatography, 1H NMR and ICP spectroscopy, and other techniques. Data were ...
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ICPBCZin: A red emitting ratiometric fluorescent indicator with nanomolar affinity for Zn2+ ions
(2008)A new fluorescent Zn2+ indicator, namely, ICPBCZin was synthesized and the spectral profile of its free and Zn2+ bound forms was studied. The newly synthesized zinc indicator incorporates as chromophore the chromeno ...
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In vivo high-resolution magic angle spinning magnetic and electron paramagnetic resonance spectroscopic analysis of mitochondria-targeted peptide in Drosophila melanogaster with trauma-induced thoracic injury
(2016)Trauma is the most common cause of mortality among individuals aged between 1 and 44 years and the third leading cause of mortality overall in the US. In this study, we examined the effects of trauma on the expression of ...
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In vivo high-resolution magic angle spinning magnetic resonance spectroscopy of Drosophila melanogaster at 14.1 T shows trauma in aging and in innate immune-deficiency is linked to reduced insulin signaling
(2010)In vivo magnetic resonance spectroscopy (MRS), a non-destructive biochemical tool for investigating live organisms, has yet to be used in the fruit fly Drosophila melanogaster, a useful model organism for investigating ...
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In vivo high-resolution magic angle spinning proton NMR spectroscopy of Drosophila melanogaster flies as a model system to investigate mitochondrial dysfunction in Drosophila GST2 mutants
(2014)In vivo nuclear magnetic resonance spectroscopy (NMR), a non-destructive biochemical tool used for investigating live organisms, has recently been performed in studies of the fruit fly Drosophila melanogaster, a useful ...
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Insulin-mimetic action of vanadium compounds on osteoblast-like cells in culture
(1997)Vanadium compounds mimic insulin actions in different cell types. The present study concerns the insulin-like effects of three vanadium(V) derivatives and one vanadium(IV) complex on osteoblast-like (UMR106 and MC3T3E1) ...
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Investigation on uranyl interaction with bioactive ligands. Synthesis and structural studies of the uranyl complexes with glycine and N-(2-mercaptopropionyl)glycine
(2002)Three new uranium(VI) compounds have been prepared with glycine (Hgly), N-(2-mercaptopropionyl)glycine (Hmpg) and 2,2′-dithiobis(N-propionylglycine) (tpg). The crystal structure of [UO2(Hgly)2Cl2] has been solved, revealing ...
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Magnetic resonance spectroscopy of live Drosophila melanogaster using magic angle spinning.
(2010)High-Resolution Magic Angle Spinning (HRMAS) proton magnetic resonance spectroscopy ((1)H-MRS) is a novel non-destructive technique that improves spectral line-widths and allows high-resolution spectra to be obtained from ...
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Novel compstatin family peptides inhibit complement activation by drusen-like deposits in human retinal pigmented epithelial cell cultures
(2013)We have used a novel human retinal pigmented epithelial (RPE) cell-based model that mimics drusen biogenesis and the pathobiology of age-related macular degeneration to evaluate the efficacy of newly designed peptide ...
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Plaque imaging using ultrasound, magnetic resonance and computer tomography: A review
(2005)Different classifications have been proposed in the literature for the characterization of atherosclerotic plaque morphology, resulting in considerable confusion. For example plaques containing medium of high level uniform ...
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Ring transformations of 2-hydroxy-(4-chloro-5H-1,2,3-dithiazol-5-ylideneamino)arenes
(2015)Abstract The cyclisation reactions of 2-(4-chloro-5H-1,2,3-dithiazol-5-ylidene-amino)phenol (5a), 3-(4-chloro-5H-1,2,3-dithiazol-5-ylideneamino)pyridin-2-ol (5b) and 2-(4-chloro-5H-1,2,3-dithiazol-5-ylideneamino)pyridin-3-ol ...
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Solid state and aqueous solution characterization of rectangular tetranuclear VIV/V-p-semiquinonate/hydroquinonate complexes exhibiting a proton induced electron transfer
(2008)Reaction of the non-innocent dinucleating ligand 2,5-bis[N,N- bis(carboxymethyl) arninomethyl]hydroquinone (H6bicah) with VO 2+ and VO43- salts in water in the pH range 2 to 4.5 provides a series of novel tetranuclear VIV ...
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Synthesis of fused 1,2,4-dithiazines and 1,2,3,5-trithiazepines
(2014)Reacting ( Z)-N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)-1H-pyrazol-5-amines 5 with Et2NH and then with concd H2SO4 gives 5H-pyrazolo[3,4-e ][1,2,4]dithiazine-3-carbonitriles 7 in good yields (74-85%) and 6H-pyrazolo-[3,4 ...
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Synthesis, characterization, and study of octanuclear iron-oxo clusters containing a redox-active Fe4O4-cubane core
(2008)A one-pot synthetic procedure yields the octanuclear FeIII complexes Fe8(μ4-O)4(μ-pz*) 12X4, where X = Cl and pz* = pyrazolate anion (pz = C3H3N2-) (1), 4-Cl-pz (2), and 4-Me-pz (3) or X = Br and pz* = pz (4). The crystal ...
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Synthetic analogs for oxovanadium(IV/V)-glutathione interaction: An NMR, EPR, synthetic and structural study of oxovanadium(IV/V) compounds with sulfhydryl-containing pseudopeptides and dipeptides
(2000)The reaction of [VO(CH3COO)2(phen)] (phen = 1,10-phenanthroline) with the sulfhydryl-containing pseudopeptides (scp), N-(2-mercaptopropionyl)glycine (H3mpg), N-(2-mercaptopropionyl)cysteine (H4m2pc), N-(3-mercaptopropion ...
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Vanadium(V) compounds with the bis-(hydroxylamino)-1,3,5-triazine ligand, H2bihyat: Synthetic, structural, and physical studies of [V 2VO3(bihyat)2] and of the enhanced hydrolytic stability species cis-[VVO2(bihyat)] -
(2008)Reaction of the ligand 2,6-bis[hydroxy(methyl)amino]-4-morpholino-1,3,5- triazine (H2bihyat) with NaVVO3 in aqueous solution followed by addition of either Ph4PCl or C(NH 2)3Cl, respectively, gave the mononuclear vanadium(V) ...
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Vanadium(V) hydroxylamido complexes: Solid state and solution properties
(1997)A novel series of vanadium(V) hydroxylamido complexes with weak ligands including glycine, [VO-(NH2O)2(Glycine)]· H2O (1)