999 resultados para Knox, John, ca. 1514-1572.


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Donateur : Nourse, Joseph Everett (1819-19..?)

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L'organisation du premier livre de motets de Tomás Luis de Victoria, publié à Venise en 1572 chez les Fils d'Antonio Gardano (RISM V 1421), repose sur une stratification d'éléments divers mais complémentaires. Les pièces sont organisées en quatre groupes : quatorze à 4 voix, neuf à 5 voix, neuf à 6 voix et une à 8 voix. Elles forment des paires modales. Les derniers motets des groupes reposent sur des écritures individualisées (ad aequales, canon à l'unisson, Tenormotette, motet à double choeur). De plus, un jeu avec le nombre de parties, une et deux essentiellement, intervient entre les groupes et à l'intérieur. Les textes émanent de plusieurs rites (avilais, prétridentin et tridentin) et sources. Lorsque c'est nécessaire, le compositeur les remanie pour qu'ils s'adaptent à l'organisation du recueil. Au bout du compte, le livre veut être un objet ayant un certain poids et qui dit quelque chose de plus qu'une simple addition de pièces. C'est précisément ce dont a besoin le jeune compositeur pour prendre une place sur le marché du motet avec ce qui constitue son premier « opus ». Dans la dédicace qu'il signe lui-même, Victoria inscrit son édition dans la mouvance de la musica reservata puisqu'il la destine d'abord aux connaisseurs. Or, c'est précisément cette organisation complexe qui permet au musicien d'inscrire son recueil dans une lignée de publications savantes, initiées semble-t-il par le livre de motets à 5 voix d'Adrian Willaert, qui date de 1539.

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The Historical Department of Iowa compiled and published these historical papers pertaining to Iowa and the territory from which Iowa was formed. Included are: John Brown among the Quakers, Mascoutin: a reminiscence of the nation of fire, Black Hawk, Keokuk, and their village, Nauvoo and the prophet, the first meeting with the Dakotahs and the tragedy at Minnewaukon.

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Alpha1-Acid glycoprotein (AAG) or orosomucoid was purified to homogeneity from human plasma by a separate two-step method using chromatography on immobilized Cibacron Blue F3G-A to cross-linked agarose and chromatography on hydroxyapatite. The conditions for the pre-purification of AAG by chromatography on immobilized Cibacron Blue F3G-A were first optimized using different buffer systems with different pH values. The overall yield of the combined techniques was 80% and ca. 12 mg of AAG were purified from an initial total amount of ca. 15 mg in a ca. 40 ml sample of human plasma. This method was applied to the purification of AAG samples corresponding to the three main phenotypes of the protein (FI*S/A, F1/A and S/A), from individual human plasma previously phenotyped for AAG. A study by isoelectric focusing with carrier ampholytes showed that the microheterogeneity of the purified F1*S/A, F1/A and S/A AAG samples was similar to that of AAG in the corresponding plasma, thus suggesting that no apparent desialylation of the glycoprotein occurred during the purification steps. This method was also applied to the purification of AAG samples corresponding to rare phenotypes of the protein (F1/A*AD, S/A*X0 and F1/A*C1) and the interactions of these variants with immobilized copper(II) ions were then studied at pH 7, by chromatography on an iminodiacetate Sepharose-Cu(II) gel. It was found that the different variants encoded by the first of the two genes coding for AAG in humans (i.e. the F1 and S variants) interacted non-specifically with the immobilized ligand, whereas those encoded by the second gene of AAG (i.e. the A, AD, X0 and C1 variants) strongly bound to immobilized Cu(II) ions. These results suggested that chromatography on an immobilized affinity Cu(II) adsorbent could be helpful to distinguish between the respective products of the two highly polymorphic genes which code for human AAG.

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