Search results for "inner"
showing 10 items of 384 documents
Mechanical behavior of a sandwich with corrugated GRP core: numerical modeling and experimental validation
2014
In this work the mechanical behaviour of a core reinforced composite sandwich structure is studied. The sandwich employs a Glass Reinforced Polymer (GRP) orthotropic material for both the two external skins and the inner core web. In particular, the core is designed in order to cooperate with the GRP skins in membrane and flexural properties by means of the addition of a corrugated laminate into the foam core. An analytical model has been developed to replace a unit cell of this structure with an orthotropic equivalent thick plate that reproduces the in plane and out of plane behaviour of the original geometry. Different validation procedures have been implemented to verify the quality of t…
Virtual endoscopy of the inner ear and the auditory canal.
2000
To assess the role of virtual endoscopy (VE) in the examination of intracisternal structures and of the inner ear, we studied the anatomy of the labyrinth and internal auditory canal using the original CT slices and VE on the unaffected side in three female and three male patients, age range 3–46 years, with contralateral retrocochlear hearing loss. We also examined seven patients with different pathological findings. VE was performed using an advanced postprocessing program with high- resolution 3D data sets of CT (1–1.5 mm thickness, pitch 1.25) and MRI-CISS-3D (constructive interference in steady state) images of the basal cisterns (1.5 T, slice thickness 0.7–1 mm). VE provides an endosc…
The Emergence of Women as Main Earners in Europe
2014
This paper conducts a cross-sectional empirical research aimed at documenting the emergence of a new family model characterized by women who earn the largest share of their household income. We show that in Europe, couples with women as the main earner have started to represent a non-negligible share of the population and identify the key characteristics of couples in which women are the main earner in comparison to equal-earner couples and to couples in which men are the main earner. We undertake a comparative approach using micro-level data from the European Social Survey on 19 countries and two time periods (2004 and 2010).
Nature of a Pigmented Substance in the Labyrinth
1964
The pigment existing in the loose connective tissue of the posterior labyrinth is originated by hemorrhage, pathological or “physiological” inflammations and wearing out of tissues. Such pigment is contained in macrophages.
Exploring the Rural within the Italian local development policy
2022
The countryside has a major role in Italy’s territorial identity and organization. The way agriculture has shaped the Italian territory and society, however, is a very complex historical process, marked by different political and economic purposes. By looking at the national territory under such an evolutionary perspective, and the changing approaches to rural development due to the influence of EU policies, this paper describes the main policy instruments that have been implemented across the Italian regions in recent decades. After this overview, the paper concludes with a critical discussion on the limits and potential of rural areas in the country’s development process.
Le evoluzioni dello sviluppo locale in Sicilia: i Sicani dalla SNAI all’integrazione con le politiche di sviluppo rurale
2022
La Strategia Nazionale Aree Interne (SNAI) è entrata in una nuova fase, in cui si prefigura la trasformazione da policy sperimentale a politica strutturale e, insieme ad altre strategie anche preesistenti concorre non senza criticità a ridefinire le traiettorie di sviluppo di queste parti del Paese. Gli sviluppi di quanto sta avvenendo sui Sicani in Sicilia sono indicativi delle interazioni tra SNAI ed altre strategie di settore, come la Strategia di Sviluppo Rurale, e indicano alcuni approcci di integrazione e di armonizzazione delle politiche attivate e delle azioni già in corso.
Cardiolipin content controls mitochondrial coupling and energetic efficiency in muscle
2020
Decreasing mitochondrial energy-production efficiency in skeletal muscle can confer protection against diet-induced obesity.
Immunoelectron microscopic localization of nitric oxide synthase III in the guinea pig organ of Corti
1998
Nitric oxide synthase III (NOS III) was identified in the guinea pig cochlea on an ultrastructural level using a post-embedding immunolabeling procedure. Ultrathin sections of London Resin (LR) White-embedded specimens were incubated with various concentrations of a commercially available antibody to NOS III and the immunoreactivity visualized by a gold-labeled secondary antibody. Analysis of ultrathin sections of the organ of Corti in the second turn of the cochlea showed that NOS III could be localized in the endothelial cells of the blood vessels under the basilar membrane, which was comparable to its location in similar cells types in various biological systems. Besides this, NOS III wa…
The influence of nimodipine on chromatolysis of motoneurons following axotomy with and without reinnervation: A quantitative image analysis
1996
Using a recently developed image analysis method to quantify the time course of chromatolysis in injured motorneurons we tested the effect of the calcium entry blocker nimodipine (1000 ppm in food pellets) on regenerating and degenerating motoneurons. Following facial-facial, hypoglossal-hypoglossal anastomosis with complete regeneration and following facial and hypoglossal nerve resection which causes a partial neuronal degeneration and postoperative survival times of 4 to 112 days, the texture of the Nissl substance of facial and hypoglossal motoneurons was analyzed on both sides of the brainstem in paraffin serial sections with a VIDASplus image analyzer. Monitoring alterations of the Ni…
Echolocating Whales and Bats Express the Motor Protein Prestin in the Inner Ear: A Potential Marker for Hearing Loss.
2020
Prestin is an integral membrane motor protein located in outer hair cells of the mammalian cochlea. It is responsible for electromotility and required for cochlear amplification. Although prestin works in a cycle-by-cycle mode up to frequencies of at least 79 kHz, it is not known whether or not prestin is required for the extreme high frequencies used by echolocating species. Cetaceans are known to possess a prestin coding gene. However, the expression and distribution pattern of the protein in the cetacean cochlea has not been determined, and the contribution of prestin to echolocation has not yet been resolved. Here we report the expression of the protein prestin in five species of echolo…