140 research outputs found
Un nuovo frammento in beneventana in Friuli
No full textNell'ambito di un lavoro sugli archivi parrocchiali promosso dal Centro di catalogazione dei beni culturali della Regione Friuli-Venezia Giulia è stato reperito un foglio proveniente da un codice in beneventana, usato come coperta di un secentesco registro di conti di due camerari della parrocchia friulana di S. Maria Assunta di Manzano, vicino Udine. Il frammento, databile al pieno XIII secolo e proveniente forse dall'Abruzzo, contiene un brano della Passio di s. Eustachio
Fotografia Wulz. Trieste, la famiglia. l'atelier
No full textUn percorso fotografico lungo oltre cent’anni, scandito sia dagli eventi che hanno collocato la città di Trieste al centro dello scenario internazionale, sia dalle tappe del suo sviluppo economico, demografico, sociale e culturale. Una lunga storia vista attraverso il filtro privilegiato della famiglia Wulz, che per più di un secolo gestì l’omonimo atelier fotografico triestino
The data bank of Friuli Venezia Giulia's heritage. Preliminary experiences of the creation of an internet site and of a Geographical Information System
No full textAssistance of intraoperative microvascular Doppler in the surgical obliteration of spinal dural arteriovenous fistula: cases description and technical considerations
No full textBACKGROUND:
Intraoperative microvascular Doppler may be valuable in assisting in the surgical obliteration of dural arteriovenous fistula of the spinal cord. It enables identification, through flow spectrum analysis, of the anatomic components and haemodynamic features of this type of vascular malformation.
METHODS:
In two cases, intraoperative microvascular Doppler was used to assist in the surgical obliteration of dural arteriovenous fistula of the spinal cord. The fistulas were identified prior to the dura opening, and for this only minimally invasive surgery was required. Direct recordings of the arterialised draining vein and the nidus of the fistula demonstrated a pathological spectrum caused by the arterial supply and the disturbed venous outflow in which a high-resistance flow pattern and low diastolic flow resembling an arterial-like flow velocity were observed.
FINDINGS:
The fistulas were obliterated by interruption of the draining vein, and Doppler measurements provided information on flow velocity changes in the medullary veins from an arterial to a venous pattern. The absence of any residual flow in the draining vein confirmed successful haemodynamic treatment.
INTERPRETATION:
Intraoperative microvascular Doppler recording is valuable assistance in surgical closure of spinal arteriovenous fistula
Intraoperative microvascular Doppler monitoring of blood flow within a spinal dural arteriovenous fistula: a precious surgical tool. Case report.
No full textThe authors describe a case of spinal arteriovenous fistula (AVF) treated by a microvascular Doppler-assisted surgical interruption of the arterialized vein. Microvascular Doppler monitoring represents a valid, widely available, noninvasive tool that enables identification, through flow spectrum analysis, of components of this type of vascular malformation. In this case because the location of the fistula was identified prior to opening the dura only minimally invasive surgery was required. Direct recordings of the arterialized draining vein and the nidus of the fistula demonstrated a pathological spectrum caused by the arterial supply and the disturbed venous outflow in which a high-resistance flow pattern and low diastolic flow resembling an arterial-like flow velocity were observed. The fistula was obliterated by interruption of the draining vein, and Doppler measurements provided information on flow velocity changes in the medullary veins from an arterial to a venous pattern. The absence of any residual flow in the AVF confirmed successful hemodynamic treatment. Intraoperative microvascular Doppler recording during surgical closure of spinal AVF is a widely available and reliable monitoring modality that helps to produce excellent clinical results
Assessment of classical, advanced, and layer-wise theories for the vibration of rotating composite anisotropic blades
No full textThe present paper aims at studying composite cambered structures, tracking the seminar work “Rotating Blade Vibration Analysis Using Shells” presented by Leissa in Journal of Engineering for Power, in 1982, devoted to homogeneous metallic blades. A refined unidimensional (1D) formulation is here implemented to overcome the limitations of classical beam theories. With an appropriate choice of cross-sectional expansions, it is possible to make the 1D model suitable for analyzing shallow blades. This approach enables one to generate both layerwise (LW) and equivalent single layer (ESL) descriptions of the problem unknowns. Furthermore, it is possible to implement classic theories as special cases. Natural frequencies are determined for isotropic and composite blades, showing the effects of changing the fiber lamination angle of symmetric and unsymmetric configurations. Besides, this study investigates the effects of thickness and rotational speed over the structure. Significant differences between classic and high-order theories are found, concerning the accuracy and the computational costs. The causes of these differences are discussed, and the results can be used as a benchmark for future studies
Wanda e Marion Wulz. Fotografe e sorelle Wanda and Marion Wulz. Photographers and Sisters
No full textNel 1981 Wanda Wulz (1903-1984) e la sorella Maria detta Marion (1905-1993) chiusero i battenti del Grande Atelier Wulz, lo studio fotografico che avevano ereditato dal padre Carlo (1874-1928) subentrato a sua volta al nonno Giuseppe (1843-1918). Dal 1928 le sorelle Wulz avevano abbandonato le loro passioni, la musica per Wanda e la pittura per Marion, per accettare il proseguimento di un destino famigliare legato a un’attività professionale che divenne la fonte del loro sostentamento economico.
Wanda e Marion furono dunque le ultime discendenti della famiglia Wulz a dedicarsi alla fotografia, ponendo fine una storia che si era aperta negli anni Sessanta dell’Ottocento quando, dopo un apprendistato presso il famoso fotografo Guglielmo Federico Engel, Giuseppe si era reso autonomo avviando lo studio fotografico che nel 1891 trovò la sua sede definitiva a Palazzo Hirschl, in Corso Italia 9 a Trieste. Il patrimonio di stampe, negativi, documenti e materiali vari riconducibili alle attività private e professionali di questa famiglia di fotografi italiani è conservato oggi presso la Fondazione Alinari per la Fotografia, dove è giunto in successive fasi di acquisti e donazion
Il fenomeno migratorio nei percorsi di apprendimento e il contributo della mostra 'in viaggio'
No full textIl contributo sottolinea la valenza didattico-educativa dei materiali presentati nella mostra e della loro sintesi a costituire il catalogo, sugggerendo anche alcuni percorsi di approfondimento e di ricerca utili in chiave di pratica di insegnamento e di apprendimento
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