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showing 10 items of 157 documents
New Alkaloids of the Sarpagine Group from Rauvolfia serpentina Hairy Root Culture
2002
Three new monoterpenoid indole alkaloids, 19(S),20(R)-dihydroperaksine (1), 19(S),20(R)-dihydroperaksine-17-al (2), and 10-hydroxy-19(S),20(R)-dihydroperaksine (3), along with 16 known alkaloids 4-19 were isolated from hairy root culture of Rauvolfia serpentina, and their structures were elucidated by 1D and 2D NMR analyses. Taking into account the stereochemistry of the new alkaloids and results of preliminary enzymatical studies, the putative biosynthetical relationships between the novel alkaloids are discussed.
Sentieri interrotti. Musicisti europei nel crepuscolo dell'Occidente
2012
Il volume descrive il contesto in cui vedono la luce le due mostre dedicate all’Arte Degenerata (Monaco 1937) e alla Musica Degenerata (Düsseldorf 1938), soffermandosi in modo particolare sui percorsi biografici e artistici di quattro compositori la cui biografia venne sconvolta dalla politica culturale nazista: Franz Schreker, Alexander Zemlinsky, Erich Wolfgang Korngold e Viktor Ullmann. Si tratta di autori di origine ebraica, legati in vario modo alla vita musicale di città come Berlino, Vienna e Praga, assai diversi per formazione e linguaggio, ma tutti travolti da una serie di eventi (l'avvento al potere di Hitler, la guerra, la Shoah) che trasformarono i loro percorsi biografici in al…
"Ognuno per sé e Dio contro tutti!". Ricordi di Werner Herzog in Sicilia
2012
Il testo rievoca alcuni momenti del primo soggiorno in Sicilia di Werner Herzog, per la regia di una nuova produzione del "Flauto magico" di Mozart al Teatro Massimo Bellini di Catania (dicembre 1991). In particolare, vengono poste in rilievo la concezione registica di Herzog e il suo approccio al capolavoro mozartiano.
Kasandras mīta recepīja mūsdienu literatūrā
2021
Sengrieķu mitoloģiskie tēli tiek izmantoti mūsdienu literatūrā , lai parādītu un ieinteresētu lasītājus aizvēsturē. Šajā bakalaura darbā tiek tuvāk aplūkots sengrieķu sievietes-pareģes Kasandras tēls vācu autores Kristas Volfas darbā „Kasandra „ salīdzinot un analizējot to ar sengrieķu autoriem. Kā viens no izpētes avotiem ir izmantots Kristas Volfas darbs Kasandra , kurā autore apraksta sievietes-pareģes traģisko likteni un pārākumu par vīriešu dzimtes pārstāvjiem. Krista Volfa sava darba zemtekstā apslēpj politikso situāciju Vācijas Demokrātiskajā republikā 1980tajos gados , kā arī savas emocijas un pārdomas.
Tra sé. Funzioni e tecniche del “cantare a parte” in Jommelli
2018
Singing "a parte" is a specific device of the theatrical and operatic communication. The first part of the article discusses the theorical and performative problems involved in the use of phrases said "tra sé" in musical numbers as reflected in eighteenth- end nineteenth-century treatises. The second part examines some examples taken from Jommelli's works, both serious and comic, in order to identify recurrent technics and features.
"Cinquant'anni sono un po' troppi per un bambino prodigio". Appunti per una lettura della "Città morta" di Erich Wolfgang Korngold
2009
Erich Wolfgang Korngold (1897-1957), bambino prodigio nel crepuscolo dell'Impero asburgico e genio in fuga dall'Europa nazista, ottiene il suo più grande successo teatrale con l'opera in tre quadri "Die tote Stadt" (La città morta, 1920). Il saggio traccia un breve profilo biografico dell'autore - anche in rapporto con le opere del periodo americano e con le musiche destinate al cinema di Hollywood - analizzando la genesi, la drammaturgia e i caratteri musicali della "Città morta".
Los 'think-tanks', miseria de ideas / 2
2008
Brief an Garlieb H. Merkel
1799
Ms. 930a, Nr. 8, Bl. 22r-23v Böttiger, Karl August. Brief an Garlieb H. Merkel, Weimar, d[en] 13. November 1797 Autora rokraksts / Autograph, vācu, angļu un latīņu val. / Deutsch, Englisch und Latein [4] lpp. / S. Attēlu numuri / Bildnummern: 930a-008-1 – 930a-008-4 Der Verfasser nennt in diesem inhaltsreichen Brief zahlreiche Namen und hält nicht nur die Verbindung mit Merkel, die aus dessen erstem Aufenthalt in Weimar resultierte, aufrecht, sondern gibt ihm weitere Hinweise und Empfehlung für seinen weiteren Aufenthalt in Dänemark. So rät er zur Übersetzung dreier Romane aus dem Englischen, darunter Jane Wests „A gossip's story“ (London 1796). Ferner bittet der Verfasser Merkel um Gefälli…
A Newly-Detected Reductase fromRauvolfiaCloses a Gap in the Biosynthesis of the Antiarrhythmic Alkaloid Ajmaline
2002
A new enzyme, 1,2-dihydrovomilenine reductase (E.C. 1.3.1), has been detected in Rauvolfia cell suspension cultures. The enzyme specifically converts 2beta( R)-1,2-dihydrovomilenine through an NADPH-dependent reaction into 17-O-acetylnorajmaline, a close biosynthetic precursor of the antiarrhythmic alkaloid ajmaline from Rauvolfia. A five-step purification procedure using SOURCE 30Q chromatography, hydroxyapatite chromatography, 2',5'-ADP Sepharose 4B affinity chromatography and ion exchange chromatography on DEAE Sepharose and Mono Q delivered an approximately 200-fold enriched enzyme in a yield of approximately 6%. SDS-PAGE showed an M r for the enzyme of approximately 48 kDa. Optimum pH …
Asymptomatic ventricular pre-excitation in children.
2009
ASYMPTOMATIC VENTRICULAR PREEXCITATION IN CHILDREN OBJECTIVE: This retrospective study was planned for a good risk assessment of asymptomatic patients affected by ventricular pre-excitation. METHODS: From 1985 to 2007, 124 patients with an atrioventricular pathway (electrocardiographic signs of ventricular pre-excitation) were admitted to our cardiology division. The average age was 7 years (range 1 month to 18 years). The mean follow-up period in the whole population of patients was 4.2 years (range 1-13 years). Four patients were lost during the follow-up. During this period, all patients remained in good health. In all of them, we performed a Holter evaluation every year. An intermittent…