Search results for "ALAT"
showing 10 items of 4241 documents
Enhanced CDW Transitions in Nb3X4(X = S, Se, Te): Intercalation and Surface Effects
2004
A x Nb 3 X 4 (A = In, Tl, ZnHg; X = S, Se, Te) compounds show CDW instabilities dependent on the type and concentration of intercalate. Tl or In intercalation flattens the Fermi surfaces and supports CDW formation. In the corresponding DOS spectrum the Fermi level is shifted towards coincidence with a small peak, derived mainly from the Nb dz 2 orbital. Localized modulated regions observed in STM images of Nb 3 X 4 at room temperature represent precursor effects to full CDW formation.
Results of isolated posterolateral corner reconstruction
2010
Abstract Background Isolated posterolateral corner (PLC) tears are relatively rare events. Various surgical techniques to treat posterolateral knee instability have been described; because surgical results are linked to cruciate reconstructions it has been difficult to date to define whether one surgical procedure has better prognosis than another. The goal of this study is to determine the clinical outcome of PLC reconstruction following fibular-based technique. Materials and methods We retrospectively evaluated a case series of patients who received isolated PLC reconstruction between March 2005 and January 2007. Ten patients were surgically treated for isolated injuries and were availabl…
THE PAINTED CEILING OF THE NAVE OF THE CAPPELLA PALATINA IN PALERMO: AN ESSAY ON ITS GEOMETRIC AND CONSTRUCTIVE FEATURES
2010
Il testo illustra gli esiti di una ricerca sulle matrici geometriche e costruttive del soffitto il legno che copre la navata centrale della Cappella Palatina di Palermo. L’opera, già oggetto di approfonditi studi relativi ai temi iconografici delle pitture che la decorano, viene indagata tramite un accurato rilievo condotto con tecniche laser scanning al fine di risalire alle matrici geometriche del progetto; tale indagine viene condotta tenendo in adeguata considerazione la struttura tridimensionale del manufatto, basata sulla tecnica dei muqarnas. Al termine dello studio viene definita una ipotesi che evidenzia una stretta correlazione fra il tracciato regolatore che ne definisce l’impian…
Electroretinographic oscillatory potentials in insulin-dependent diabetes patients: A long-term follow-up.
2002
Purpose: The aim of this research was to study the relevance of long-term follow-up of electroretinographic oscillatory potentials (OPs) in predicting the onset of minimal non-proliferative diabetic retinopathy in insulin-dependent diabetes patients. Methods: A total of 80 insulin-dependent diabetics, with normal fundi and normal OPs at first examination, were followed prospectively for 10 years. Oscillatory potentials were measured and fundus examinations performed once or twice per year. Results: During follow-up, 35% of patients developed diabetic retinopathy after a mean disease duration of 12 ± 2 years. A decrease in OP amplitudes was seen in 46% of this group, but reductions were also…
Analysis of intrapulmonary O2concentration by MR imaging of inhaled hyperpolarized helium-3
1999
Inhalation of hyperpolarized 3He allows magnetic resonance imaging (MRI) of ventilated airspaces.3He hyperpolarization decays more rapidly when interacting with paramagnetic O2. We describe a method for in vivo determination of intrapulmonary O2 concentrations ([O2]) based on MRI analysis of the fate of measured amounts of inhaled hyperpolarized3He in imaged regions of the lung. Anesthetized pigs underwent controlled normoventilation in a 1.5-T MRI unit. The inspired O2 fraction was varied to achieve different end-tidal [O2] fractions ([Formula: see text]). With the use of a specifically designed applicator,3He (100 ml, 35–45% polarized) was administered at a predefined time within single …
Biomechanical comparison between the modified rolling-hitch and the modified finger-trap suture techniques
2016
Purpose: The purpose of this study was to characterize the biomechanical effect of two grasping suture techniques used during ligament reconstruction: the modified rolling-hitch (MRH) and the modified finger-trap (MFT). Methods: Flexor profundus tendons were harvested from fresh pig hind-leg trotters. Each specimen was mounted on an electro-mechanic universal testing machine (Instron 3367). In half of all tendons (15 specimens), the suture was passed around the tendon following the MRH knot (Group 1). In the remaining half of all tendons (15 specimens), the suture was passed over a distance of 30 mm according to the MFT suture technique (Group 2). As per standard intra-operative technique, …
Palaeophylloxera nov. gen., The firstfossil specimen of the family Phylloxeridae (Hemiptera, Phylloxeroidea); Lower Miocene of Spain
1999
A fossil alate aphid from the Lower Aragonian (Lower Miocene) deposits of Rubielos de Mora (Teruelprovince) in eastern Spain is described as Palaeophylloxera seilacheri nov. gen. and sp. It is the first fossil specimen described within the Family Phylloxeridae. The principal differences between this genus and other representatives of the Phylloxeridae (and also the extinct Elektraphididae) are the apparent presence of an oblique vein on the hind wing, the presence of distinctly visible transverse striae on antennal segment III, and the peculier venation on the fore wings.
Effetto antalgico “immediato” nella malattia di La Peyronie: TECAR Terapia. Studio di fase uno
2013
Introduzione. Con lo scopo di valutare la TECAR terapia quale nuovo possibile trattamento medico della malattia di La Peyronie (PD), abbiamo condotto uno studio di fase uno senza placebo né gruppo di controllo. La TECAR terapia si basa sull’utilizzo di radiofrequenze in grado di trasferire energia ai tessuti trattati causando movimenti ionici. Ciò provoca una stimolazione cellulare in senso replicativo e riparativo. La TECAR terapia ha ottenuto risultati eccellenti nel trattamento di alcune patologie del tesuto connettivo, così abbiamo deciso di condurre uno studio circa l’applicabilità e la sicurezza della TECAR nel trattamento della PD. MATERIALI E METODI. Da giugno a settembre 2012 sono …
Effetti antalgici della TECAR terapia nel trattamento della patologia di La Peyronie. Studio randomizzato a singolo cieco con gruppo sham su un total…
2014
Scopo del lavoro Abbiamo condotto uno studio randomizzato a singolo cieco con gruppo sham per valutare gli effetti terapeutici della TECAR terapia su 96 pazienti affetti dalla malattia di La Peyronie (IPP) vista l’efficacia di questo trattamento sulle patologie fibrose. Materiali e metodi Novantasei pazienti affetti da IPP randomizzati con rapporto 2:1 sono stati suddivisi in 2 gruppi: gruppo trattato e gruppo sham. Abbiamo valutato l’efficacia TECAR sul dolore, sul grado di incurvamento penieno e sul deficit erettile (DE) al termine del trattamento ed a 1 (FU1) e 3 (FU3) mesi dal termine del trattamento mediante l’utilizzo della scala VAS per il dolore e di questionari specifici per l’IPP …