Search results for " Arno"
showing 10 items of 12 documents
Monosymptomatic presentation of type I Arnold-Chiari malformation: report of two cases.
1994
Two cases of type I ACM are described, one of which presented with dizziness in late childhood (case 1), the other with mild intention tremor in adulthood (case 2). Cerebellar ectopia should be considered in monosymptomatic patients even in the absence of other symptoms and signs of C.N.S. dysfunction. Magnetic resonance imaging of the craniocervical junction should be performed because it may be diagnostic for type I ACM.
Comparative biochemistry of CO2 fixation and the evolution of autotrophy
1999
Carbon dioxide fixation is a polyphyletic trait that has evolved in widely separated prokaryotic branches. The three principal CO2-assimilation pathways are (i) the reductive pentose-phosphate cycle, i. e. the Calvin-Benson cycle; (ii) the reductive citric acid (or Arnon) cycle; and (iii) the net synthesis of acetyl-CoA from CO/CO2, or Wood pathway. Sequence analysis and the comparative biochemistry of these routes suggest that all of them were shaped to a considerable extent by the evolutionary recruitment of enzymes. Molecular phylogenetic trees show that the Calvin-Benson cycle was a relatively late development in the (eu)bacterial branch, suggesting that some form(s) of carbon assimilat…
Periodic and quasi-periodic orbits of the dissipative standard map
2011
We present analytical and numerical investigations of the dynamics of the dissipative standard map. We first study the existence of periodic orbits by using a constructive version of the implicit function theorem; then, we introduce a parametric representation, which provides the interval of the drift parameter ensuring the existence of a periodic orbit with a given period. The determination of quasi--periodic attractors is efficiently obtained using the parametric representation combined with a Newton's procedure, aimed to reduce the error of the approximate solution provided by the parametric representation. These methods allow us to relate the drift parameter of the periodic orbits to th…
Imagología: un emblema holandés del siglo XVIII sobre la imagen del español
2009
El presente artículo analiza el emblema «De Spanjaart» [«El español»] del libro StichtelykZinnebeelden [Emblemas edificantes] de Arnold Houbraken y GezineBrit (Amsterdam, 1723) a la luz de los estereotipos que sobre la imagen de los españoles prevalecían por entonces en Holanda y en el contexto de la disciplina de la Imagología. The present article analyzes the emblem «De Spanjaart» [«The Spaniard»] from the book Stichtelyk Zinnebeelden [Edifying Emblems] by Arnold Houbrakenand Gezine Brit (Amsterdam, 1723) in the light of the stereotypes of the image of Spaniards prevalent in Holland at that time and in the context of the discipline ofImagology (Imagestudies).
Zvaigžņotā Debess: 2008, Rudens
2008
Latvijas Zinātņu akadēmija, Latvijas Universitāte
Zinātņu vēsture un muzeoloģija (Latvijas Universitātes Raksti, 818. sēj.)
2022
Altri cieli: appunti sull'esilio di Arnold Schoenberg
1996
Appunti per una biografia di Alexander Zemlinsky in Europa (1871-1938)
2012
Il saggio delinea un profilo biografico e artistico di Alexander Zemlinsky (1871-1942) nel periodo compreso fra l'esordio compositivo e l'esilio in America. In particolare, vengono considerati i suoi rapporti con Alma Mahler, con Arnold Schoenberg e, più in generale, con la Scuola musicale di Vienna e l'ambiente culturale della capitale austrica. Per quanto riguarda il linguaggio compositivo di Zemlinsky, viene considerato soprattutto il suo rapporto con l'idea del superamento della sintassi tonale nell'opera teatrale "Der Zwerg" (Il nano, 1919-21) e nella "Lyrische Symphonie" del 1922-23.