410 research outputs found

    Day-case management of chronic suppurative otitis media with cholesteatoma with canal wall down technique surgery: long-term follow-up

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    The overall number of day-case otologic surgery cases is increasing; however, there is limited experience about performing canal wall down tympanoplasty in patients with chronic suppurative otitis media with cholesteatoma in this setting. The objective of this study was to assess the success of this technique as day-case surgery in terms of results and complications over an 8-year follow up period. We included in this study 42 patients undergoing canal wall down technique tympanoplasty surgery for chronic suppurative otitis media with cholesteatoma performed as day cases during a 2-year period. 30 cases (71.4%) were discharged on the day of surgery, whereas 12 cases (28.6%) were hospitalized and discharged the day after. The principal reasons for failure of discharge on the day of surgery were asthenia (6 cases), vertigo and asthenia (4 cases), undetermined (2 cases). Based on our experience, with a proper preoperative selection, assessment and screening of the patients, mastoidectomy with timpanoplasty for chronic suppurative otitis media with cholesteatoma can be carried out in a day surgery setting with no significant effects on effectiveness of surgery, post-operative symptoms and relapse of disease even in the long term

    Tapinoma nigerrimum as safeguard for Italian myrmecofauna against Argentine ant

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    Asthma is the most common chronic disease in pediatrics.Most data on the prevalence of childhood allergic diseasescome from the International Study of Asthma and Allergiesin Childhood (ISAAC) phase II held in 1995 and phase III from2002. ISAAC created a methodology for studying two agegroups 6---7 and 13---14 years old.1In 2002, according to thedata gathered in the phase III of ISAAC, the prevalence ofasthma among Portuguese children from 6 to 7 years old was9.4%, 29.1% for rhinitis and 28.1% for wheezing.2In the last decade, little information on the prevalenceof childhood asthma and rhinitis in Portugal has been docu-mented, and to the best of our knowledge, none in Coimbra.In 2002, 5 centers from 5 Portuguese cities joined the ISAACproject: Lisbon, Oporto, Coimbra, Portimão and Funchal.The Coimbra research center only studied 13---14 years oldadolescents.2The district of Coimbra, with a total area of 3974 km2,is located in central Portugal and has 434,311 inhabitants.Coimbra is the biggest city in the central region, and the 6thlargest in Portugal

    Bladder tissue passive response to monotonic and cyclic loading

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    The fundamental passive mechanical properties of the bladder need to be known in order to design the most appropriate long-term surgical repair procedures and develop materials for bladder reconstruction. This study has focused on the bladder tissue viscoelastic behavior, providing a comprehensive analysis of the effects of fibers orientation, strain rate and loading history. Whole bladders harvested from one year old fat pigs (160 kg approximate weight) were dissected along the apex-to-base direction and samples were isolated from the lateral region of the wall, as well as along apex-to-base and transverse directions. Uniaxial monotonic (stress relaxation) and cyclic tests at different frequencies have been performed with the Bose Electroforce® 3200. Normalized stress relaxation functions have been interpolated using a second-order exponential series and loading and unloading stress-strain curves have been interpolated with a non-linear elastic model. The passive mechanical behavior of bladder tissue was shown to be heavily influenced by frequency and loading history, both in monotonic and cyclic tests. The anisotropy of the tissue was evident in monotonic and in cyclic tests as well, especially in tests performed on an exercised tissue and at high frequencies. In contrast, transverse and apex-to-base samples demonstrated an analogous relaxation behavior

    Parametric Analysis of Orthopedic Screws in Relation to Bone Density

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    A global study of geometry and material properties of orthopedic screws was performed, considering not only the effect of each single factor (screw pitch, number of threads, fillet angle, etc.) but also their interactions with respect to bone density

    Techniques and Survey for 3D Modeling of Touristic Caves: Valdemino Case

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    Nowadays, touristic caves are a relevant topic among topographical and geological studies. Modern techniques allow to elaborate 3D models with high accuracy and precision. Anyway, underground surveys are always delicate to perform, due to narrow and difficult to reach environments. In this paper, we show a case study, “Valdemino” cave, that involved the utilization of different point cloud acquisition methods: UAV, TLS, SLAM. The first purpose was to obtain 3D models of outdoor and indoor environments with a medium and high accuracy. These models were used to calculate the thickness of the rock between surface and cave’s roof and will be used for further studies, taking part in the PRIN 2017 project, concerning the impact of the tourist on show caves. The second purpose was to discuss about the feasibility and precision of the different survey methods, when studying a cave. The results showed how SLAM technology is enough accurate for speleological purposes, if compared with the more accurate TLS method. It is precise, maneuverable, easy to use and it allowed to get into environments that TLS can’t reach, such as non-touristic areas

    A Secondary-Side Controlled Electric Vehicle Wireless Charger

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    In this paper, the design procedure of an electric vehicle (EV) wireless charger is presented. Unlike most of the systems available in the literature, the proposed charging system is regulated from the vehicle side. The on-board electrical circuit automatically adapts the resonant compensation to guarantee compatibility with the primary inverter characteristics and achieve high transmission efficiency without communication between sides. Moreover, the proposed control strategy, used to regulate the secondary full active rectifier (FAR), allows the supply of the the EV battery, maximizing the efficiency during the whole charging process

    Historia y caracterización del Área de Producciones Intensivas del CERET y el INTA en La Pampa

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    Presentación del grupo de trabajo Area de Producciones Intensivas del Centro Regional de Educación Tecnológica con sede en General Pico, La Pampa y del INTA. Se reseña la historia y enumeran acciones, actividades y resultados.EEA AnguilFil: Grasso, Ricardo. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina. Centro Regional de Educación Tecnológica La Pampa; ArgentinaFil: Muguiro, Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil. Agencia de Extensión Rural General Pico; ArgentinaFil: Pechin, Carlos Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil. Agencia de Extensión Rural General Pico; Argentin

    Área de Producciones Intensivas. Acciones y resultados 2021-2022

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    En el año 1997 se fundó el Centro Regional de Educación Tecnológica (CERET), enmarcado en el contexto político, económico, social y orientado hacia un perfil agroindustrial, articulado en el ámbito regional y nacional que considera las transformaciones y cambios del contexto mundial. Su objetivo es, entre otros, el desarrollo de las actividades encuadradas en el marco del Plan Nacional de Educación Tecnológica, atendiendo a un perfil agroindustrial integrado y basado siempre en una complementariedad más estrecha entre la industria, el agro y el sistema educativo. En este contexto desde el año 1998 hasta el presente, ha desarrollado a través de su Área de Producciones Intensivas (API), un proyecto hortícola cuyos objetivos fundamentales giran en torno a la generación de tecnología, la prestación de servicios y el diseño e implementación de procesos de formación y capacitación en el área hortícola para la región. En cumplimiento de sus objetivos el API durante la campaña 2021-2022 realizó las siguientes acciones: 1. Participación en la Jornada virtual: “Producción de tomates de polinización abierta (OP). 2. Organización de la charla virtual: “Desinfección de suelos y control de nemátodos en sistemas Intensivos”. 3. Organización de la charla virtual: “Cultivo de tomate en La Pampa” 4. Organización de la XXII Jornada Hortícola 5. Publicaciones y presentación de trabajosAER General PicoFil: Muguiro, Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil. Agencia de Extensión Rural General Pico; ArgentinaFil: Pechin, Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil. Agencia de Extensión Rural General Pico; ArgentinaFil: Grasso, Rodolfo. Universidad Nacional de Rosario; Argentin
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