Search results for "IOS"
showing 10 items of 8115 documents
MRI findings and evoked potentials in patients with myotonic dystrophy versus facioscapulohumeral dystrophy
1997
Evoked potentials recordings have been applied to many neurological disorders, localizing the lesions in the central nervous system (CNS) pathways. Facioscapulohumeral muscular dystrophy (FSHD) is a slowly progressive degenerative disease involving the muscles of the face and shoulders. On the contrary, myotonic distrophy (MD), the most frequent and severe myotonic disease, is caracterized by myotonia (delay of relaxation after voluntary contraction), muscular atrophy and dystrophic changes in non-muscular tissues. In the present investigation, patients with clinically and electromyographically verified FSHD and MD were examined using somatosensory evoked potentials (SEP) and brainstem aud…
Waterjet dissection in pediatric cranioplasty
2010
Object Waterjet dissection has been shown to separate tissues of different resistance, with preservation of blood vessels. In cranioplasty, separation of subcutaneous tissue and dura mater is often difficult to achieve because the various tissue layers strongly adhere to each other after decompressive craniotomy. In the present study, the potential advantages and drawbacks of the waterjet technique in cranioplasty after craniectomy and duraplasty are addressed. Methods The waterjet effect on fresh human cadaveric dura mater specimens as well as on several dural repair patches was tested in vitro under standardized conditions, with waterjet pressures up to 80 bar. Subsequently, 8 pediatric …
Differences in Accuracy and Radiation Dose in Placement of Iliosacral Screws: Comparison between 3D and 2D Fluoroscopy
2022
Percutaneous iliosacral screw fixation is a widely accepted method of stabilizing the posterior pelvic ring. Recently developed tools such as 3D-navigated fluoroscopy and computed navigation seem to prevent a surgeon from conducting screw misplacement. The study aimed to comparatively assess the introduction of sacroiliac screw placement using 2D and 3D fluoroscopy in terms of accuracy and radiation exposure. Iliosacral screws were introduced in 37 patients using 2D (group N1) and in 36 patients using 3D fluoroscopy (group N2) techniques. Overall, 61 and 56 screws were introduced in groups N1 and N2, respectively. Screw placement accuracy was assessed using postoperative computed tomography…
El periplo del objeto mitológico: itinerarios simbólicos del arte prehispánico entre los siglos XVI y XX
2014
Resumen : El presente texto discute la “identidad” que los objetos de arte prehispanico adquirieron desde el siglo XVI hasta mediados del siglo XX de acuerdo a los circuitos que recorrieron y los sujetos que los coleccionaron, miraron y pensaron. Itinerarios concretos: del contexto ritual al gabinete de curiosidades, del gabinete al museo arqueologico, del museo arqueologico a la muestra en espacios de arte. Itinerario que expresa las significaciones que el moderno Occidente les asigno en relacion a sus propias necesidades, anhelos y carencias. --------------------------- Abstract : This text discusses the "identity" that pre-Hispanic art objects acquired from the sixteenth to the twentieth…
Musica Urbana. Musica e cerimonie all’aperto nella Palermo di Cinque e Seicento
2012
Il saggio è dedicato al ruolo che ebbero le istituzioni ecclesiastiche - in particolare gli ordini religiosi - nel definire 'musicalmente' uno spazio urbano, quello della Palermo spagnola tra Cinque e Seicento, secondo la prospettiva della recente "Urban Musicology". Proponendo alcune ipotesi di interpretazione sul rapporto tra cerimonia, musica e contesto cittadino, il contributo prende in esame sia le cronache ufficiali che le fonti d'archivio, incentrandosi sulle processioni e su due particolari occasioni festive: il Corpus Domini e il festino di Santa Rosalia.
“Poiché così voglio, e non altrimenti”: forme di individualismo e pratiche musicali nelle chiese di Palermo nel periodo rinascimentale
2008
Il contributo procede ad esaminare le attività musicali nelle chiese di Palermo durante il Cinquecento, con particolare riguardo a specifici ordini religiosi (Carmelitani, Domenicani, Benedettini). La parte conclusiva sposta l'attenzione sulla committenza, focalizzandosi sulla diffusa pratica dei legati testamentari destinati alle messe cantate e alla musica.
Sacred Music and Performance Practices in Ecclesiastical Institutions of Palermo during the Renaissance Period
2008
Musica e devozione nella «città felicissima». Ordini religiosi e pratiche sonore a Palermo tra Cinque e Seicento
2022
Avvalendosi di una ricchissima documentazione d’archivio, il presente lavoro intende ricostruire il panorama musicale della Palermo di Cinque e Seicento a partire dal ruolo ricoperto dagli ordini religiosi. Le tre parti del volume indagano rispettivamente occasioni liturgiche e festive, protagonisti delle attività musicali, forme di finanziamento e cappelle di musica, dimostrando come la promozione di eventi sonori costituisse un potente mezzo di consolidamento del prestigio delle comunità di appartenenza. Based on a wealth of archival documentation, this work reconstructs the musical landscape of Palermo in the 16th and 17th centuries starting from the role played by religious orders.The t…
El espectacular José Iturbi: la aplicación de los códigos visuales del musical clásico americano a la música de concierto
2018
El pianista español José Iturbi multiplicó su popularidad internacional gracias a su participación en siete películas de la Metro Goldwyn Mayer entre 1943 y 1949. En estos filmes, mayoritariamente adscritos al género musical, Iturbi –que siempre se interpretaba a sí mismo- actuó con figuras de la envergadura de Judy Garland o Gene Kelly. En este artículo no se pretende comentar la calidad interpretativa o el repertorio del pianista valenciano. Esta propuesta se basa en un enfoque diferente: se pretende analizar, a través de diferentes fragmentos, la aplicación de los códigos visuales del musical cinematográfico de aquella época (espectacularidad, irrealidad, ruptura formal y narrativa, etc.…
Variants of the
2019
The Gram-positive soil bacterium Bacillus subtilis relies on the glutamine synthetase and the glutamate synthase for glutamate biosynthesis from ammonium and 2-oxoglutarate. During growth with the carbon source glucose, the LysR-type transcriptional regulator GltC activates the expression of the gltAB glutamate synthase genes. With excess of intracellular glutamate, the gltAB genes are not transcribed because the glutamate-degrading glutamate dehydrogenases (GDHs) inhibit GltC. Previous in vitro studies revealed that 2-oxoglutarate and glutamate stimulate the activator and repressor function, respectively, of GltC. Here, we have isolated GltC variants with enhanced activator or repressor fu…