964 resultados para ALBUMIN ADDUCTS


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Collectionneur : Sirot, Georges (1898-1977)

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Collectionneur : Moreau-Nélaton, Étienne (1859-1927)

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Collectionneur : Gilles, Albert (1873-1959)

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Donateur : Touring-Club de France

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Donateur : Touring-Club de France

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Collectionneur : Gilles, Albert (1873-1959)

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Ancien possesseur : Rothschild, Adèle de (1843-1922)

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Comprend : Vestibule de ma maison d'Auteuil avec la vue de l'escalier, juillet 1883 ; Salle à manger de ma maison d'Auteuil. Panneau de la cheminée, juillet 1883 ; Petit salon de ma maison d'Auteuil. Panneau de la cheminée, juillet 1883 ; Grand salon de ma maison d'Auteuil. Panneau du fond, juillet 1883 ; Grand salon de ma maison d'Auteuil. Panneau de la glace sans tain, juillet 1883 ; Chambre à coucher de ma maison d'Auteuil. Vue prise par la porte du cabinet de toilette montrant le couronnement du lit répété dans la glace, juillet 1883

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Comprend : Maison des Goncourt. Façade sur le boulevardMontmorency, juin 1886 / [timbre sec : Ed Lochard, Phot. 39, rue Laval Paris] ; Maison des Goncourt. Façade sur le jardin, mai 1886 / [sign. Edmond de Goncourt] ; Maison des Goncourt. Porte de service de l'allée de la grille, mai 1886 / [sig. Edmond de Goncourt] ; Maison des Goncourt. Cabinet de travail. Panneau contre le cabinet de travail dont la porte est ouverte, juin 1886 / [sig. Edmond de Goncourt] ; [timbre sec à g. ds marge inf. : Fd Lochard Phot. 39, rue Laval Paris] ; Maison des Goncourt. Cabinet de l'Extrême-Orient. Panneau du fond avec la grande vitrine des porcelaines, juin 1886 / [sig. Edmond de Goncourt] ; Maison des Goncourt. Le grenier. Panneau du fond à droite attenant au N°55, mai 1886 / [sig. Edmond de Goncourt] ; Maison des Goncourt. Le grenier. La petite pièce au fond située au dessus de ma chambre à coucher, mai 1886 / [sig. Edmond de Goncourt] ; Maison des Goncourt. Cabinet de travail. Panneau de la cheminée attenant au N°55, mai 1886 / [sig. Edmond de Goncourt] ; Le grenier. Porte d'entrée, mai 1886 / [sig. Edmond de Goncourt] ; Maison des Goncourt. Cabinet de l'Extrême-Orient. Panneau de la cheminée attenant au N°55, juin 1886 / [sig. Edmond de Goncourt] ; [timbre sec en bas à dr. : Ed Lochard Phot. 39, rue Laval Paris] ; Maison des Goncourt. Vestibule. Panneau contre la cuisine, juin 1886 / [sig. Edmond de Goncourt] ; [timbre sec en bas à dr. : Ed Lochard Phot. 39, rue Laval Paris] ; Maison des Goncourt. Fond du jardin avec le petit rocher tout couvert de lierre, juin 1886 / [sig. Edmond de Goncourt] ; [timbre sec en bas à dr. : Ed Lochard Phot. 39, rue Laval Paris]

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This study examined relationships among physical activity, body fat and salivary immonoglobulin A (sIgA) levels in adolescent children of Southern Ontario. Gender differences on these factors were also assessed. Sixty-one grade-five students (10-1 lyrs), males (n=29) and females (n=31), who had not received a flu vaccination in the past 12 months, participated in the study. They were assessed for: aerobic power (20-m shuttle run), relative body fat (bioelectrical impedance analysis), sIgA, sIgA/albumin ratio, and salivary Cortisol. Each subject completed the Habitual Activity Estimation Scale and the Participation Questioimaire. Students wore a pedometer for 48h to estimate their average total distance traveled per day. The results show 40% of the children were over 25% body fat and 50% of them spend less than five hours per day in any physical activities. Salivary IgA was not related to salivary Cortisol, physical activity, fitness level or body fat in this age group. There were no gender differences in sIgA and Cortisol levels. Boys had a significantly higher aerobic power and daily distance traveled, but reported similar organized and fi-ee time activity participation levels as the girls. The test-retest reproducibility for salivary Cortisol was 0.663 (p<0.01), while long term sIgA and sIgA/albumin ratio reproducibility was non-significant for repeated measurements taken after six weeks. It was found that salivary IgA has not been shovm to be a stable measure in children, in contrast to the results found in the literatiu-e that tested adults and the relationship with physical activity, fitness level and body fat.

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The preparation of chelated difluoroboron cations (DD)BF2+, where DD is a saturated polydentate tertiary-amine or polydentate aromatic ligand, has been systematically studied by using multinuclear solution and solid state nuclear magnetic resonance spectroscopy and fast atom bombardment mass spectrometry. Three new methods of synthesis of (DD)BF2+ cations are reported, and compared with the previous method of reacting a chelating donor with Et20.BF3. The methods most effective for aromatic donors such as 1,1O-phenanthroline are ineffective for saturated polydentate tertiary-amines like N,N,N' ,Nil ,Nil-pentamethyldiethylenetriamine. Polydentate tertiary-amine donors that form 5-membered rings upon bidentate chelation were found to chelate effectively when the BF2 source contained two leaving groups (a heavy halide and a Lewis base such as pyridine =pyr or isoxazole =ISOX), i.e., pyr.BF2X (X = CI or Br), ISOX.BF2X and (pyr)2BF2+. Those that would form 6membered rings upon chelation do not chelate by any of the four methods. Polydentate aromatic ligands chelate effectively when the BF2 source contained a weak Lewis base, e.g., ISOX.BF3, ISOX.BF2X and Et20.BF3. Bidentate chelation by polydentate tertiaryamine and aromatic donors leads to nmr parameters that are significantly different then their (D)2BF2+ relatives (D =monod~ntate t-amines or pyridines). The chelated haloboron cations (DD)BFCI+, and (DD)BFBr+ were generated from D.BFX2 adducts for all ligands that form BF2+ cations above. In addition, the (DD)BCI2+ and (DD)BBr2+ cations were formed from D.BX3 adducts by the chelating aromatic ligands, except for the aromatic ligand 1,8-bis(dimethylamino)naphthalene, which formed only the (DD)BF2+ cation, apparently due to its extreme steric hindrance. Chelation by a donor is a two-step reaction. For polydentate tertiary-amine ligands, the two rates appear to be very dependent on the two possible leaving groups on the central boron atom. The order of increasing ease of displacement for the donors was: pyr < Cl < Br < ISOX. The rate of chelation by polydentate aromatic ligands appears to be dependent on the displacement of the first ligand from the boron. The order of increasing ease of displacement for the donors was: pyr < CI < ISOX ~ Br < Et20.

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Studies on the steady state behavior of soluble cytochrome c oxidase are extensive. These studies have examined the influence of ionic strength and pH and may provide answers to questions such as the link between proton translocation and charge separation. The present study examined the influence of external bulk pH on ApH formation, biphasic kinetics, and steady state reduction of cytochromes c and a of cytochrome c oxidase in proteoliposomes. Bulk pH has an appreciable effect on ApH formation and steady state reduction levels of cytochromes c and 8. Bulk pH affected total Vmax and Km at the low affinity binding site of cytochrome c. This study also examined the influence of bovine serum albumin and free fatty acids on proton pumping activity in bovine heart proteoliposomes. Proton pumping activity decreased after treatment with BSA, and was subsequently reinstated after further treatment with FFA. Much study in the superfamily of haem/copper oxidases has recently been devoted to the bacterial oxidases. The present study has examined some protein composition characteristics and bioenergetic features of Bacillus subtilis cytochrome caa3 oxidase. Results provide evidence for the structural composition of the enzyme in relation to the covalently bound cytochrome c to the oxidas~. Bioenergetically, caa3 COV showed appreciable proton pumping activity. Steady state analysis of the caa3 COV showed significantly different cytochrome c and a reduction characteristics compared to the bovine enzyme.

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The successful development of stable biosensors incorporating entrapped proteins suffers from poor understanding of the properties of the entrapped biomolecules. This thesis reports on the use of fluorescence spectroscopy to investigate the properties of proteins entrapped in sol-gel processed silicate materials. Two different single tryptophan (Trp) proteins were investigated in this thesis, the Ca2 + binding protein cod III parvalbumin (C3P) and the salicylate binding protein human serum albumin (HSA). Furthermore, the reactive single cysteine (Cys) residue within C3P and HSA were labelled with the probes iodoacetoxynitrobenzoxadiazole (C3P) and acrylodan (C3P and HSA) to further examine the structure, stability and function of the free and entrapped proteins. The results show that both C3P and HSA can be successfully entrapped into sol-gelderived matrices with retention of function and conformational flexibility.

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Nuclear magnetic resonance spectroscopy has been used to study donor-acceptor complexes of boron trifluoride with several ureas, tetramethylthiourea, tetramethylselenourea, and tetramethylquanidine as well as adducts of tetramethyl- -urea with BF2Cl, BFC1 2 , and BC1 3 - A large number of mixed tetrahaloborate ions, including some of the ternary ones such as BF2CIBr-,have been obtained by ligand exchange reactions and studied by NMR techniques. The bonding in these ions is of the same inherent interest as the bonding in the isoelectronic tetrahalomethanes which have been the subject of many detailed studies and have been involved in a controversy concerning the existence of and the nature of "fluorine hyperconjugation" or C-F P1T- Pn bonding_ Ligand exchange reactions also gave rise to the difluoroboron cation, (TMU)20BF2+o The difluoroboron cation has been observed in solutions of TMU-BF3 , and has been proposed as a possible intermediate for fluorine exchange reactions in BF3 adducts.