Academic literature on the topic 'Sostituti a Lungo'
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Journal articles on the topic "Sostituti a Lungo"
Bagnasco, Arnaldo. "Le conseguenze sociali della crisi." QA Rivista dell'Associazione Rossi-Doria, no. 3 (September 2010): 131–39. http://dx.doi.org/10.3280/qu2010-003007.
Full textCamagni, Roberto, Roberta Capello, and Andrea Caragliu. "Le città metropolitane: leader all'interno della gerarchia urbana in Italia?" ARCHIVIO DI STUDI URBANI E REGIONALI, no. 132 (November 2021): 121–52. http://dx.doi.org/10.3280/asur2021-132006.
Full textDe Falco, Carolina. "Socialità, identità e “disordine” nei quartieri popolari del secondo dopoguerra in Italia." Quintana: revista do Departamento de Historia da Arte, no. 19 (January 18, 2021): 79–90. http://dx.doi.org/10.15304/qui.19.7321.
Full textD’Adamo, Gianna. "Dialisi Peritoneale: Dialisi Marginale? 2013 Tentativo Di Sintesi Delle Opinioni a Confronto." Giornale di Clinica Nefrologica e Dialisi 26, no. 1 (November 2, 2014): 81–82. http://dx.doi.org/10.33393/gcnd.2014.868.
Full textBaldacci, Maria Cristina. "Bioetica dell’esercizio della sessualità nel portatore di handicap fisico geneticamente trasmissibile." Medicina e Morale 46, no. 3 (June 30, 1997): 503–32. http://dx.doi.org/10.4081/mem.1997.879.
Full textSanteusanio, Fausto. "Quadri internistici ed endocrinologici connessi alla disabilitŕ grave." CHILD DEVELOPMENT & DISABILITIES - SAGGI, no. 3 (April 2012): 61–66. http://dx.doi.org/10.3280/cdd2010-003010.
Full textSerio, Mario. "L'interpretazione del trust e l'obbligo di interpretazione conforme («<i>Reading down</i>»)." Trusts, no. 4 (August 4, 2022): 599–626. http://dx.doi.org/10.35948/1590-5586/2022.133.
Full textFederici, Silvia, Marco Bonomi, and Luca Persani. "Management clinico e terapia sostitutiva dell’insufficienza ovarica primaria." L'Endocrinologo, February 20, 2023. http://dx.doi.org/10.1007/s40619-023-01227-4.
Full text"Diritto italiano. Penale." DIRITTO, IMMIGRAZIONE E CITTADINANZA, no. 3 (November 2010): 221–37. http://dx.doi.org/10.3280/diri2010-003017.
Full textBenatti, Francesca. "Note sulla riforma del libro III del Codice Civile francese: multo rumore per nulla." Revista de Direito da Cidade 10, no. 2 (April 20, 2018). http://dx.doi.org/10.12957/rdc.2018.32876.
Full textDissertations / Theses on the topic "Sostituti a Lungo"
NELLI, NICOLA. "“Sviluppo di materiali biocompositi per la realizzazione di sostituti tissutali per impianti a breve e lungo termine”." Doctoral thesis, Università di Siena, 2017. http://hdl.handle.net/11365/1011390.
Full textAll human tissues are mainly made by fibrous networks (collagens and elastin) deeply interpenetrated by an amorphous polysaccharide matrix of proteoglycans and non-collagenous glycoproteins, forming an insoluble solid permeated by a ionic fluid, which is the extracellular matrix (ECM)1, in which there is also a cellular component which supplies nutrients for all the tissue components. The macroscopic properties of the tissue are determined by the peculiar composition and assemblage of the fibrillary components and of the matrix. The hierarchical structure of the tissues at a dimensional level [molecular scale (1-100 nm), ultramolecular scale (0.1-100 μm) and tissue scale (0.1-100 mm)] acquire a significant role in the determination of the physical and physiological features. The ECM, as a consequence of the specialization of the tissue, is able to meet expectations for the specific functions required, such as the mechanical resistance in the tendons and ligaments, the extreme hardness through calcification in bones and teeth, the glomerular filtration rate, the adherence to basal membranes, etc., so to be responsible for the mechanical support functions of elasticity, cellular anchoring, the determination of cell orientation and the exchange of molecules and fluids in human tissues. The different functions, thanks to their specific roles, allow us to distinguish the tissues at a micro and macro level, so to divide them easily in two categories: soft tissues (muscles, heart, nerves, tendons, ligaments, cartilage, skin, crystalline lens, etc.) and hard tissues (mainly bones and teeth). On the basis of the nature and the structure of the ECM, hydrogels seemed to be the best choice for the simulation of the chemical-physical features. Hydrogels are renowned for their hydrophilic reticulum, which inflate in water or in biological fluids, absorbing a high percentage of liquids, although remains insoluble. Moreover, they are excellent biomimetic materials for the capability of modulating their structural, morphologic and mechanical features on the basis of the specific need, by varying their composition and their grade of reticulation (such as for hydrogels with a polyvinyl alcohol basis2-4). Therefore, hydrogels were ideal candidates for tissue engineering and for regenerative medicine. The aim of the PhD research was the synthesis and characterization of bio composite materials with a hydrogel matrix to be used as tissue replacement. During this study, some of the most invalidating and high cost articular pathologies have been taken into consideration; among these: Osteoarthritis (OA) of the knee cartilage, degenerative illness, which leads to the friction between the bones, with consequent atherosclerosis formations, eburnation of the bones, bone cists, synovitis, effusion and swelling of the knee and in large scale stiffness and pain which compromise the regular walking functions5. The degeneration of the intervertebral disc (IDD), featured by a clear drop in cellular liveliness, a reduction of the water content and the consequent nourishment supply, a gradual substitution of the core with a fibrocartilage tissue and the formation of cracks and fractures in the external fibroses annul, which may lead to a structural fail of the IVD, causing also serious spine disorders, another invalidating syndrome6. Meniscus injuries subject to wear, caused by demanding work, or by trauma or stress, especially for athletes. This last case is very common and it is characterized by pain and a period of impediment, with short or medium term prognosis or with the total block of the articulation. As a result, surgery includes a permanent change in the amount of load and stress on the articular cartilage, which often causes a premature onset of OA7. In order to face inconveniences produced by OA, a biomimetic material was projected and synthesized, so to use it as a substitute of the tibia cartilage. This material was the PVA hydrogel, reticulated chemically through STMP (both materials are notoriously atoxic and used as food additives)3,8. To determine the best conditions, five hydrogel samples with different molar ratios PVA:STMP (1:0.1; 1:0.25; 1:0.5; 1:1; 1:2)were synthetized and valued. While monitoring the effect of the variation of the parameters such as, pH (11, 12, 13), the concentration of the reticulated solution (10%/20% p/v), the reaction time (24, 48, 72 o 96 ore) and the different modalities of solution agitation (mechanical and magnetic), the desiccation methodology (through Lyophilisation (_L) or through heater (_E) 60°C) evaluating the results on the base of the reaction feedback, the solidity and continuity of the materials’ structure.The synthetized materials were later chemically characterized through an IR spectrometry, mass spectrometry of secondary ions (ToF-SIMS), colorimetric test and element analysis (AE), in order to determine the quality and quantity of the reticulum. From a physical point of view, the materials were characterizedthanks to the thermogravimetric analysis(TGA) and the evaluation of the water content (WC), it was possible to value if the entrance of the reticulum changed the thermic stability of the PVA matrix and, moreover, the inflatement capability of the hydrogel. Then, the material was characterized morphologically, through scanning electron microscope (SEM) and differential scanning calorimeter (DSC)to analyse respectively the micro and the meso-structure. Finally, a rheological and mechanical characterization was made, thanks to a rheological analysis and a dynamo mechanical analysis(DMA) to determine if the viscoelastic properties of the materials are comparable to those of the tibia cartilage tissue. In conclusion, degradation and cytotoxic tests were made, following international procedures (ISO/FDIS 10993-5 e 10993-13 Biological evaluation of medical device), to evaluate the chemicalstability and the cytocompatibility of the synthetizedmaterials. From the analysis made on the sample PVA-H 0.5_E,it is possible to identify similar characteristics to the cartilage of the tibial plafond, in terms of hydration, stability, mechanical properties, and cytotoxicity and, therefore, it may be used in the realization of biomedical implants for the osteoarthritis therapy9,10. In order to face one of the most serious spinal disorders, the herniation of the intervertebral disc, in which a leak of material of the nucleus pulposus (NP) touches the nervous structures of the spine and causes intense pain, it was possible to propose a PVA hydrogel, synthetized chemically through STMP and enriched by PVP. The PVP is a highly hydrophilic polymer, which interacts through hydrogen bonds with the PVA chains11, and has allowed to decrease the degree of reticulation, producing a matrix with similar mechanical properties to the NP, and, at the same time, it has increased the water content of the samples, reaching the measures of the tissue that is being replaced.To determine the best conditions, three hydrogels were synthetized with the same molar ratioPVA:STMP (1:0.5), but with growing contents of PVP % p/v (1%, 2.5% e 5% p/v). The materials were later characterized through a chemical analysis, by IR spectrometry and colorimetric tests to determine the quality and quantity of the reticulum and to appraise if the introduction of PVP produced disturbing effects in the hydrogel’s matrix. More tests were made, by a physical viewpoint, thanks to thermogravimetric analysis(TGA) and evaluation of the water content(WC) to estimate the inflatement capacities of the hydrogels.Morphological tests, through differential scanning calorimeter (DSC) were made to determine the mesostructure. Rheological analyses (AR) were made to determine if the viscoelastic properties of the materials were comparable with those of the spinal nucleus pulposus, and finally cytotoxic tests were made, following international procedures (ISO/FDIS 10993-5 e 10993-13 Biological evaluation of medical device), to evaluate the chemical stability and the cytocompatibility of the synthetized materials. In conclusion, from the results obtained in this study, the best material which mimes best the NP features is the 5.0% sample, with hydration and mechanical properties similar to the NP. Therefore, the 5.0% sample may be considered an excellent possibility for the realization of biomedical implants for the therapy of spinal degenerations12. The research of biomimetic materials for the therapy of meniscal injuries was made by proposing two different samples of PVA based hydrogels for the substitution of regeneration of the meniscus, depending on the type of lesion: For those cases in which the patient had undergone Meniscectomy for a serious fracture, a PVA hydrogel reticulum obtained through STMP with ratioPVA:STMP 1:0.25, after three reticulations with the aim of incrementing the mechanical properties, so to reach similar features to those of the meniscus (approximately120 kPa) was proposed as a possible substitute13.For those cases in which the meniscal lesions were of a minor entity, a cellular scaffold was proposed. This scaffold was made by a hydrogel mix of PVA and Xanthan Gum, reticulated simultaneously through STMP for the regeneration of the meniscal tissue14. The research of the best substitute involved the synthesis of three samples with different content % p/v di XG-PVA (60-40; 30-70; 15-85).Once synthetized, both typologies of materials were cross-examined by a chemical, physical and mechanical characterization. Moreover, the materials undergone citotoxicological tests in vitro to evaluate the suitability for temporary or permanent meniscal substitutes. In the case of long-term substitutes, the sample 3R PVA-H 0.25 may be considered as a potential biomimetic substitute of the meniscus. To what may concern the stress relaxation tests, it is capable of instant dissipation of the deformation performed, by touching a decrease percentage > than 95% after 1 second, similarly to the human cartilage tissue15and with the same G value13.In the case of celluar scaffolds, the sample with improved skils such as biomimetic material is XG15.X15posses good properties in terms of hydration, mechanical properties apt for cellular colonization.Therefore, the sample XG15 is a potential candidate for the realization of biomedical implants for the therapy of meniscal lesions and it is qualified for the following evaluation fase of citotoxicology in vitro, in accordance with the law ISO/FDIS 10993-5.
BERTOLDO, FABIO. "La protesi Valsalva nella chirurgia sostitutiva della radice aortica con conservazione della valvola nativa: follow-up a lungo termine." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2009. http://hdl.handle.net/2108/208570.
Full textBackground: The reimplantation valve-sparing aortic root replacement is safe and characterized by short and long-term good results. Several modifications have been proposed to rebuilt the complex anatomo-functional structure of the aortic root in the attempt to improve the long-term results. The Valsalva graft appears to be useful in order to recreate more closely such a structure also concurring to a greater reproducibility and standardization of this technique. We retrospectively analyzed our perioperative and long-term follow-up data. Methods: From May 2000 to October 2009, 42 patients (36 males, mean age of 53±10 years) underwent reimplantation valve-sparing aortic root replacement using the Valsalva graft. Sixteen patients (38.1%) had Marfan syndrome and 2 (4.8%) had bicuspid aortic valve. Fifteen (35.7%) underwent concomitant cardiac procedures. Results: The in-hospital mortality was 2.4%. There were no dropouts at the follow-up, which lasted 80 ± 36 months (median 94 months and range from 0 to 120 months). There were 4 late deaths during the period of observation, and so the 10-years cumulative actuarial survival was 88.1%. In 7 patients (16.4%) did not show satisfactory results: the 10-years freedom from recurrence of aortic insufficiency not needing reoperation was 95.2%, while the 10-years freedom from aortic valve reoperation was 88.1%. Conclusions: The reimplantation valve-sparing aortic root replacement using the Valsalva graft is safe and characterized by a low in-hospital mortality. The peculiar reconstruction of the aortic root, guaranteed by this conduit, positively influences the long-term results. Moreover, the Valsalva graft appears to favour a good reproducibility and a good standardization of this procedure.
BASILE, URSULA. "Dosaggio del PTH post tiroidectomia e suo valore predittivo di ipocalcemia e terapia sostitutiva a lungo termine." Doctoral thesis, 2012. http://hdl.handle.net/11573/917465.
Full textConference papers on the topic "Sostituti a Lungo"
Ballarin, Matteo, and Nadia D'Agnone. "Paesaggio, suolo, tempo: la rappresentazione dei tempi geologici nella citta' di Catania." In International Conference Virtual City and Territory. Roma: Centre de Política de Sòl i Valoracions, 2014. http://dx.doi.org/10.5821/ctv.8041.
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