198,566 research outputs found
Emergency planning in the industrial area of Milazzo: the revision of the External Emergency Plan for the Refinery
No full textThe aim of this work has been to revise the External Emergency Plan for the Refinery of Milazzo, located in northern Sicily near a small town of great tourist interest. The work has been performed as a collaboration between the University of Messina and the Prefecture of Messina.
The validity of External Emergency Plans (EEP) depends on the modifications inside the establishment and the territorial vulnerability (land-use and population), and it should include other components such as natural risks.
The importance of revising the EEP of the Refinery of Milazzo is due to the necessity to take into account recent modifications inside the establishment which have lowered the previous risk levels and to evaluate the Domino Effect as required by the Seveso II Directive
Laparoscopic jejunostomy in a child with chronic intestinal pseudobstruction
No full textLaparoscopic jejunostomy in a child with chronic intestinal pseudobstruction
Li Voti G., Amoroso S.,Milazzo M.
Objective os the study: chronic intestinal pseudo obstruction (CIP) is a severe condition characterized by recurrent symptoms of bowel obstruction, in the absence of lumen occluding lesions. Because of motility disorders, since neonatal age these children show failure to thrive,vomiting,constipation and malnutrition. Long term enteral nutritional support, by gastrostomy or jejunostomy, appears the gold treatment. We performed a laparoscopy assisted jejunostomy in a patient with CIP. Our technique is described and results discussed.
Methods and procedures: a 14 years old male child, affected by CIP, was admitted to our unit with severe malnutrition. He had undergone,two years before, a duodeno jejunal anastomosis because of o diagnosis of duodenal compression by superior mesenteric artery. He had no improvement from this operation. Xray study demonstrated a persistent gastroparesis. A short term trial of nasojejunal feeding was effective in weight gain. Because of special anatomical pattern determined from previous operation we performed a laparoscopy assisted jejunostomy and inserted a mic key button for feeding.
A 5 mm laparoscopic camera poprt was placed through the umbilicus, by an open access. Two further 5 mm ports were placed in the left lower quadrant and in the cross point of umbilical transverse line and left breast midline. The camera was moved to the inferior port site. Avoding adhesions we managed to find the first jejunal loop. A bowel segment, approximately ten cm distal to the ligament of Treitz, was softly grasped and brought up to the abdominal wall at the left upper port site. Bowel was secured to abdominal wall by few unabsorbable sutures and minimally ostomy was done in order to insert the jejunostomy button. The correct position of the button was checked by laparoscopy. Enteral nutrition restarted via nasojejunal tube 3 days postoperatively and via jejunostomy 8 days later. We observed no intraoperative cpmplications or difficulties because of previous surgery adhesions.
Conclusions: laparoscopy assisted jejunostomy is a safe and effective procedure to achieving enteral access in patients with CIP
Modelling stress-corrosion microcracking in polycrystalline materials by the Boundary Element Method
No full textThe boundary element method is employed in this study in conjunction with the finite element method to build a multi-physics hybrid numerical model for the computational study of stress corrosion cracking related to hydrogen diffusion in polycrystalline microstructures. More specifically a boundary integral representation is used to represent the micro-mechanics of the aggregate while an explicit finite element method is used to model inter-granular hydrogen diffusion. The inter-granular interaction between contiguous grains is represented through cohesive laws, whose physical parameters depend on the concentration of inter-granular hydrogen, diffusing along the interfaces according to the Fick's second law. The model couples the effectiveness of the polycrystalline boundary element micro-mechanics model with the generality of the finite element representation of the inter-granular diffusion process. Few numerical tests are reported, to demonstrate the potential of the proposed technique
Radiation applications in art and archaeometry : X-ray fluorescence applications to archaeometry : possibility of obtaining non destructive quantitative analyses
No full textThe possibility of obtaining quantitative XRFanalysis in archaeometric applications is considered in the following cases:
(i) Examinations of metallic objects with irregular surface: coins, for instance.
(ii) Metallic objects with a natural or artificial patina on the surface.
(iii) Glass or ceramic samples for which the problems for quantitative analysis rise from the non-detectability of matrix low Z elements.
The fundamental parameter method for quantitative XRFanalysis is based on a numerical procedure involving he relative values of XRFlines intensity. As a consequence it can be applied also to the experimental XRFspectra obtained for metallic objects if the correction for the irregular shape consists only in introducing a constant factor which
does not affect the XRFintensity relative value. This is in fact possible in non-very-restrictive conditions for the experimental set up.
The finenesses of coins with a superficial patina can be evaluated by resorting to the measurements of Rayleigh to Compton scattering intensity ratio at an incident energy higher than the one of characteristic X-ray. For glasses and ceramics the measurements of the Compton scattered intensity of the exciting radiation and the use of a proper scaling law make possible to evaluate the matrix absorption coefficients for all characteristic X-ray line energies
La regione e gli enti non territoriali ad essa collegati: nomine, indirizzo, controllo. il ruolo del consiglio regionale
No full textPreso atto che, nella "prima" stagione statutaria delle regioni a statuto ordinario, il ricorso alla amminsitrazione "per enti" risulta assolutamente ampio ed uniforme nelle regioni, il contributo si propone di verificare il rispettivo ruolo di Giunta e Consiglio nella selezione dei soggetti da nominare negli organi direttivi e di controllo degli enti cui la regione a vario titolo partecipa, anche al fine di far emergere - perlomeno per questo delicato aspetto - un tratto della forma di governo regionale. All'esito di un esame di tutti gli statuti e delle leggi regionali sulle nomine, emerge un quadro variegato, nel quale di volta in volta prevale il ruolo del consiglio ovvero quello della giunta, ovvero infine modelli in cui i due organi cooperano. Sotto un diverso profilo, quasi tutti gli ordinamenti che prevedono un ruolo consiliare decisorio nell'ambito dei procedimenti di nomina, prevedono che vi siano meccanismi di rappresentanza della maggioranze e dell'opposizione, riproducendo così, su scala di ente, le dinamiche politiche presenti in consiglio
Risk evaluation of Terrorist Attacks against Chemical Facilities and Transport Systems in Urban Areas
No full textTerrorist actions have increased in recent years. In the past,
terrorist attacks or sabotage have been considered as a security problem
but their frequency means they must also be considered from the
safety point of view. A complete risk analysis must include scenarios
caused by terrorist attack or sabotage. As well as chemical plants and
storage facilities, characterized by the presence of large quantities of
dangerous substances, also road/rail tankers used for their transport
constitute potential targets. The hazard associated with transportation
depends on the vulnerability of the territory. This paper focuses attention
on the description of a methodology for the analysis of incidental
scenarios caused by terrorist attacks in urban areas and the identification
of some aspects where improvements can be made. Finally,
an application of this method is illustrated. Furthermore, in order to
obtain a complete risk analysis, it is necessary to take into account
that, beyond substances transported, the consequences depend on the
mode of attack and the characteristics of the infrastructure an
The role and the limits of scientific non destructive physics methods in art and archeology
No full textAntonino M. Milazzo, Dimensione retorica e realtà politica. Dione di Prusa nelle orazioni III, V, VII, VIII, 2007
No full textGangloff Anne. Antonino M. Milazzo, Dimensione retorica e realtà politica. Dione di Prusa nelle orazioni III, V, VII, VIII, 2007. In: L'antiquité classique, Tome 78, 2009. pp. 299-300
Evaluation of a behavioural response of Mediterranean coastal fishes to novel recreational feeding situation
No full textFish may learn to associate food with human presence through recreational hand-feeding, a popular tourist activity. The conditional learning-e. g. when an organism learns by continuous exposure to one stimulus-of different coastal fish species exposed to novel feeding situations was evaluated. The latencies of learning response to the initiation of supplementary feeding were rapid and species-specific. However differences in the learning response between different fishes decreased over time, demonstrating that associating with others might incur costs especially for small-sized species, likely due to increased competition for food. Nevertheless some other fish species did not acquire any specific human oriented behavior, being naturally timid or avoiding humans
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