Dissertations / Theses on the topic 'Medio Termine'
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Piccolo, Celeste. "Osservazioni sull’evoluzione morfologica di medio e breve termine del corso del medio e basso Tagliamento." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/17045/.
Full textMandolini, Debora. "Evoluzione a medio e breve termine di un tratto del litorale di Senigallia." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10023/.
Full textMarini, Massimiliano Luigi Ivo <1966>. "PTA e stenting carotideo: valutazione morfologica ed evolutiva, a breve e medio termine." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/979/1/Tesi_Marini_Massimiliano.pdf.
Full textMarini, Massimiliano Luigi Ivo <1966>. "PTA e stenting carotideo: valutazione morfologica ed evolutiva, a breve e medio termine." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/979/.
Full textVandini, Silvia <1978>. "Valutazione della funzione renale nei nati pretermine alla nascita e a medio termine." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5470/1/Vandini_Silvia_tesi.pdf.
Full textPreterm birth may be associated to an impairment of the development that is completed after 40 weeks of gestation in term newborn. These alterations may lead to perinatal mortality and morbidity that are higher in preterm than in term newborn, and they may also determine short and long term sequelae. It was reported by several authors that nephrogenesis is completed at 36 weeks of gestation; for this reason preterm birth interrupts the physiological course of process; moreover, preterm newborns are exposed to several risk factors for acute kidney injury. These conditions are responsible of an increased risk of renal impairment in children and adults born prematurely. The aim of this study was to investigate renal function in 29 children 2-4 years old born prematurely and previously investigated for renal function in the perinatal period. We observed in the study group both major renal disorders (nephrotic syndrome and decreased eGFR)in a few infants, and mild impairment (mild proteinuria, decreased TRP, systolic blood pressure higher than 90° centile). Our results suggest that infants born prematurely could be screened for renal function in prescholar age to detect subjects requiring a long term follow up for renal function.
Vandini, Silvia <1978>. "Valutazione della funzione renale nei nati pretermine alla nascita e a medio termine." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5470/.
Full textPreterm birth may be associated to an impairment of the development that is completed after 40 weeks of gestation in term newborn. These alterations may lead to perinatal mortality and morbidity that are higher in preterm than in term newborn, and they may also determine short and long term sequelae. It was reported by several authors that nephrogenesis is completed at 36 weeks of gestation; for this reason preterm birth interrupts the physiological course of process; moreover, preterm newborns are exposed to several risk factors for acute kidney injury. These conditions are responsible of an increased risk of renal impairment in children and adults born prematurely. The aim of this study was to investigate renal function in 29 children 2-4 years old born prematurely and previously investigated for renal function in the perinatal period. We observed in the study group both major renal disorders (nephrotic syndrome and decreased eGFR)in a few infants, and mild impairment (mild proteinuria, decreased TRP, systolic blood pressure higher than 90° centile). Our results suggest that infants born prematurely could be screened for renal function in prescholar age to detect subjects requiring a long term follow up for renal function.
FERRARI, RUFFINO Salvatore. "Il laser endovenoso nel trattamento della IVC: risulati a breve e medio termine." Doctoral thesis, Università degli Studi di Verona, 2010. http://hdl.handle.net/11562/343901.
Full textTHE endovenous laser treatment is a technique Mininvasive for ablation of the incontinence of the saphenous systems and collateral veins. This study was designed to assess the effectiveness and safety of this technique and to compare the results with other tradidional and endovascular techniques.
CORRADO, Egle. "Aldosterone e sindromi coronariche acute: ruolo nel follow-up a breve e medio termine." Doctoral thesis, Università degli Studi di Palermo, 2014. http://hdl.handle.net/10447/91213.
Full textBolzonella, Cristian. "Elaborazione di un modello di simulazione degli effetti nel medio termine delle principali politiche energetiche sul settore elettrico Veneto." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3423336.
Full textLa produzione di energia elettrica in Veneto è caratterizzata da un’alta dipendenza dalle fonti fossili quali il carbone ed il gas. Le recenti normative europee hanno fissato un target di consumo di energia elettrica prodotta da fonti rinnovabili da raggiungere entro il 2020 e contemporaneamente è stato posto un tetto alle emissioni di CO2 per gli impianti di grandi dimensioni che gradualmente si ridurrà nel tempo. Che target di produzione da energie rinnovabili riuscirà a raggiungere il Veneto? Che peso avranno le diverse tecnologie? Quanti sussidi saranno necessari per raggiungere gli obbiettivi stabiliti dall’Unione Europea? Per rispondere a queste domande è stato costruito il modello di simulazione VES (Veneto Electricity Simulator). Il modello costituisce un’implementazione della metodologia “System Dynamic Analysis” orientata all’analisi di un sistema complesso come quello elettrico nel quale interagiscono variabili legate all’attività di produzione, alle scelte di politica energetica ed agli effetti di tali attività. Nel presente articolo mediante l’uso del modello VES vengono analizzati i costi e le esternalità derivanti 1) dalla variazione del livello di sostegno del prezzo di vendita dell’energia elettrica prodotta dalle fonti rinnovabili e 2) gli effetti sul settore elettrico delle variazioni dei prezzi delle emissioni della CO2.
De, Santis Letizia. "Studio di prevalenza a medio e lungo termine della Sindrome dell'arto fantasma in pazienti amputati trans femorali e trans tibiali." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19334/.
Full textDababneh, Hussam <1980>. "Efficacia e complicanze durante la curva di apprendimento della Thulep: risultati a breve e medio termine delle prime 48 procedure." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7019/1/Dababneh_Hussam_TESI.pdf.
Full textMATERIALS AND METHODS: Between 2012 and 2013, we prospectively analyzed the data of the first 48 patients who underwent Thulium Laser enucleation of the prostate (ThuLEP). Patients were reassessed at 3, 6, 12 and 24 months with evaluation of the PSA, post-void volume (PVR), uroflowmetry (Qmax), transrectal ultrasonography and validated questionaires (IPSS: International Prostate Symptom Score and QoL: Quality of Life). RESULTS: The mean volume of the prostate was 63 ± 5.3 ml. The mean operative time was 127.58 ± 28.50 minutes. The mean weight of the removed tissue was 30.40 ± 13.90 gr. At 6 month follow up, the mean PVR decreased from 165.13 ± 80.15 ml to 7.78 ± 29.19 ml, while the mean Qmax flow rate increased from 5.75 ± 1.67 ml/s to 18.1 ± 5:27 ml/s. The mean IPSS and QoL showed a steady improvement from 19.15 (IQR: 2-31) and 4 (IQR: 1-6) preoperatively to 6.04 (IQR: 1-20) and 1.13 (IQR: 1-4) respectively. During the learning curve, the weight of the enucleated tissue, the time of hospital stay and the catheter time improved significantly. The main complications included transient stress incontinence (12.5% at 3 months and 2.1% at 12 months). CONCLUSIONS: ThuLEP is an effective, safe and reproducible surgical technique, regardless of the prostate size. Our data suggest that ThuLEP offers a significant improvement in functional outcomes comparable with traditional techniques despite a long learning curve.
Dababneh, Hussam <1980>. "Efficacia e complicanze durante la curva di apprendimento della Thulep: risultati a breve e medio termine delle prime 48 procedure." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7019/.
Full textMATERIALS AND METHODS: Between 2012 and 2013, we prospectively analyzed the data of the first 48 patients who underwent Thulium Laser enucleation of the prostate (ThuLEP). Patients were reassessed at 3, 6, 12 and 24 months with evaluation of the PSA, post-void volume (PVR), uroflowmetry (Qmax), transrectal ultrasonography and validated questionaires (IPSS: International Prostate Symptom Score and QoL: Quality of Life). RESULTS: The mean volume of the prostate was 63 ± 5.3 ml. The mean operative time was 127.58 ± 28.50 minutes. The mean weight of the removed tissue was 30.40 ± 13.90 gr. At 6 month follow up, the mean PVR decreased from 165.13 ± 80.15 ml to 7.78 ± 29.19 ml, while the mean Qmax flow rate increased from 5.75 ± 1.67 ml/s to 18.1 ± 5:27 ml/s. The mean IPSS and QoL showed a steady improvement from 19.15 (IQR: 2-31) and 4 (IQR: 1-6) preoperatively to 6.04 (IQR: 1-20) and 1.13 (IQR: 1-4) respectively. During the learning curve, the weight of the enucleated tissue, the time of hospital stay and the catheter time improved significantly. The main complications included transient stress incontinence (12.5% at 3 months and 2.1% at 12 months). CONCLUSIONS: ThuLEP is an effective, safe and reproducible surgical technique, regardless of the prostate size. Our data suggest that ThuLEP offers a significant improvement in functional outcomes comparable with traditional techniques despite a long learning curve.
Felisa, Giada. "Analisi di ingressione marina a Bellocchio (Fe) negli scenari di breve, medio e lungo termine con l'ausilio della modellazione matematica 2DH." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/2062/.
Full textGIRIBONO, Anna Maria. "Trattamento endovascolare con nuovi materiali in pazienti diabetici affetti da ischemia critica e lesioni trofiche degli arti inferiori: risultati a medio termine." Doctoral thesis, Università degli studi del Molise, 2021. http://hdl.handle.net/11695/100849.
Full textObjective: Diabetes mellitus is a main cause of lower limb amputation worldwide. It is currently a very common disease, more than 425 million people are affected and this number is expected to double after 2045. A person with diabetes has a significant risk, up to 25% more than non-diabetics, of developing trophic ulcers throughout his life. In recent years, thanks to the development of new technologies and new materials, the endovascular treatment has now become the therapeutic option of first choice. The purpose of this thesis is to analyze the short and medium term results of endovascular treatment performed with different types of materials in patients suffering from critical ischemia of the lower limbs. In particular, the primary, primary assisted and secondary patency, the restenosis / occlusion and limb salvage rate were assessed. Methods: Eighty diabetic patients with concomitant peripheral arterial disease were enrolled in two different vascular surgery centers respectively in South and North Italy, AOU Federico II in Naples and AOU Maggiore della Carità in Novara and treated with different types of devices; in a group of these a new type of stent was used: SUPERA® (Abbott Vascular, Santa Clara, CA, USA). All patients underwent preoperative an ultrasound Doppler of the lower limbs, a calculation of the ankle-arm index, foot x-ray, microbiological swab and targeted antibiotic therapy in case of trophic lesions, calculation of the BMI. Results: All revascularization procedures were performed under local anesthesia. From February 2018 to March 2020, 80 patients (69M/11F) were treated at the two reference centers. A control echocolordoppler was performed at 3,6,12,18 and 24 months. Technical success was 100%. The primary, primary assisted and secondary patency of the entire population under examination were respectively 73.8%, 86% and 90% at 24 months. In the subgroup of patients treated with Supera® stents, they were 75%, 90.6% and 87.5% at 24 months, respectively. The limb salvage rate for all patients was over 90%. Conclusions: The endovascular treatment in patients with ischemic diabetic foot is now the first choice therapeutic option, thanks to the development of new technologies and new materials.
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.
ABUMALOUH, ISLAM. "La resezione epatica laparoscopica versus la resezione epatica a cielo aperto nel trattamento degli stadi precoci del carcinoma epatocellulare, risultati perioperatori e oncologici a medio termine dopo propensity score matching." Doctoral thesis, Università degli studi di Pavia, 2017. http://hdl.handle.net/11571/1203270.
Full textNUGARA, Cinzia. "Effetti della Terapia con Sacubitril/Valsartan sulla Capacità di Esercizio dei pazienti con Scompenso Cardiaco a Frazione di Eiezione Ridotta (HFrEF) nel Follow-up a Breve, Medio e Lungo Termine e Ruolo della percentuale di Delayed Enhancement (DE) alla Risonanza Magnetica Cardiaca (CMR) sulla risposta alla terapia: uno Studio Multicentrico." Doctoral thesis, Università degli Studi di Palermo, 2021. http://hdl.handle.net/10447/477048.
Full textIntroduction: Sacubitril/valsartan in heart failure (HF) with reduced ejection fraction (HFrEF) was shown to be superior to enalapril in reducing the risk of death and hospitalization for HF. The aim of this study was to evaluate cardiopulmonary effects of sacubitril/valsartan in patients with HFrEF and the possible correlation with the degree of myocardial fibrosis assessed with cardiac magnetic resonance (CMR). Methods: An observational, prospective study was conducted. 134 outpatients with HFrEF underwent serial cardiorespiratory tests after initiation of therapy with Sacubitril / Valsartan. Of these, 54 patients underwent CMR. The remaining 80 patients did not perform CMR as they had undergone ICD implantation prior to enrollment in the aforementioned study. Results: After a mean follow-up of 13.3 ± 6.6 months, a reduction in systolic blood pressure (p <0.0001), an improvement in FE (p = 0.0003), a reduction in the E/A ratio (p = 0.007), inferior vena cava size (p = 0.009) and NT-proBNP levels (p = 0.007) was observed. During the follow-up, we observed an increase in peak VO2 of 16% (Δ = + 5 mL / Kg / min; p <0.0001) and in O2 pulse of 13% (Δ = +1, 7 mL / beat; p 0.0002), as well as an improvement in ventilatory response associated with a 7% reduction in the VE/VCO2 slope (Δ = 2.5; p = 0.0009). VO2 at the anaerobic threshold (AT-VO2) went from 11.5 +2.6 to 12.5 +3.3 mL / kg / min (p = 0.021); furthermore, an 8% increase in the Δ VO2 / Δ Work ratio (Δ = +0.8 mL / beat; p 0.0001) and an 18% increase in the tolerance to physical exercise (Δ = +16 Watt; p <0.0001). In multivariate logistic regression analysis, the main predictors of events during follow-up were the VE/VCO2> 34 [OR: 3.98 (95% CI: 1.59 10.54); p-value = 0.0028]; the presence of ventilatory oscillation [OR: 4.65 (95% CI: 1.55 1 6.13); p value = 0.0052] and the hemoglobin value [OR: 0.35 (95% CI: 0.21 0.55); p value <0.0001]. In the subgroup of patients undergoing CMR, a lower response after sacubitril/valsartan therapy was observed in the presence of Delayed Enhancement (DE) > 4.6% in terms of improvement in peak VO2 delta (+2.1 vs. + 4.7), pulse of O2 (+1.4 vs. +4.2), FE (+4.1 vs. + 10) and NT-proBNP (760 vs. 810). No significant differences were observed in terms of ΔVO2/ΔWork and VE / VCO2. Conclusions: The results of the study show that therapy with Sacubitril/valsartan improves exercise tolerance, left ventricular ejection fraction, peak VO2 and anaerobic threshold and ventilatory efficiency. The presence of myocardial fibrosis conditions the response to therapy with sacubitril/valsartan. In fact, in these patients, the effects of the drug on the functional capacity and cardiorespiratory parameters, even if maintained, are reduced. However, further studies are needed in order to better understand the mechanism of action of the drug and the effects on cardiac remodelling.
Colla, Laura. "Experimental characterization of nanofluids as heat transfer media." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423531.
Full textI nanofluidi sono costituiti da particelle solide di dimensione nanometrica (1-200 nm) disperse all’interno di fluidi comuni. Considerata l’elevata conduttività termica delle nanoparticelle solide rispetto alle proprietà termiche intrinsecamente scarse dei fluidi convenzionalmente usati per lo scambio termico, i nanofluidi sono stati inizialmente proposti come fluidi termovettori caratterizzati da interessanti proprietà termiche. Negli ultimi anni, il numero di pubblicazioni sui nanofluidi ha avuto una crescita esponenziale. Tuttavia, i nanofluidi sono fluidi complessi e i lavori sperimentali che si trovano in letteratura presentano spesso risultati tra loro discordanti e imprecisi, non supportati da valutazioni teoriche che devono essere approfondite. Uno dei principali problemi riguarda la produzione di sospensioni stabili, affidabili e riproducibili. In questo lavoro, sono stati presi in considerazione nove diversi nanofluidi, in acqua o glicole e con nanoparticelle di ossidi, metalli o carbonio, per valutare le possibili differenze tra i fluidi risultanti. Ogni fluido è stato attentamente caratterizzato. Per ogni nanofluido, la stabilità della sospensione è stata valutata considerando la distribuzione della dimensione media delle nanoparticelle in sospensione, utilizzando la tecnica DLS (Dynamic Light Scattering). Inoltre, per l'analisi di stabilità, sono stati misurati anche il potenziale ζ ed il pH dei nanofluidi. Per i nanofluidi che sono risultati stabili, si è proceduti con lo studio delle proprietà termofisiche, necessario per comprendere il loro potenziale impiego energeticamente favorevole in applicazioni specifiche. Per questo motivo, sono state misurate la conduttività termica e la viscosità dinamica. L'obiettivo finale di questo lavoro è stato quello di indagare le capacità di scambio termico convettivo dei nanofluidi. A questo scopo, è stato progettato e costruito un apparato sperimentale per misurare il coefficiente di scambio termico monofase convettivo, in condizione di flusso termico di parete costante. Dopo un intenso lavoro di misura sperimentale su più nanofluidi, non è stato trovato alcun nanofluido con straordinarie proprietà termofisiche, nonostante alcuni risultati pubblicati in letteratura che avevano posto le basi iniziali per questa tesi. Tra tutte le sospensioni studiate, quelle con nanoparticelle metalliche sembrano le più promettenti. Per questo motivo, nanofluidi più concentrati, con surfattanti adatti, sono in fase di studio.
Cardoso, Catarina Henriques Mourela. "Medo de cair em pessoas com insuficiência renal crónica terminal." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13253.
Full textEnquadramento: A Insuficiência Renal Crónica Terminal (IRCT) implica a realização de hemodiálise ou diálise peritoneal. A diálise apresenta vários riscos que afetam a qualidade de vida das pessoas, sendo um deles o risco de queda, que está associado à fragilidade após os tratamentos. Após uma queda é frequente uma pessoa ter medo de cair. Esta percepção de medo pode contribuir também para o risco de queda, acabando por ser tornar um ciclo vicioso. O medo de cair tem sido pouco estudado na população com IRCT. Objetivos: Este estudo teve como objetivo avaliar o medo de cair na população com IRCT e a sua relação com características sociodemográficas e clínicas, frequência de quedas, força muscular e equilíbrio funcional. Metodologias: Realizou-se um estudo transversal, do tipo descritivo, comparativo e correlacional, com uma abordagem quantitativa. Utilizou-se um questionário baseado na checklist da Classificação Internacional de Funcionalidade, Incapacidade e Saúde para recolher dados relativos à caracterização socio-demográfica e clínica e frequência de quedas da amostra. O medo de cair foi avaliado através de uma questão adicionada ao questionário e através da aplicação da Escala de Confiança no Equilíbrio Específica para a Atividade (Escala ABC). Foram recolhidos dados de equilíbrio funcional através do Teste Levantar e Sentar 5 vezes e de força muscular através de um dinamómetro digital isométrico. A análise dos dados foi realizada com recurso a estatística descritiva e inferencial. Resultados: Fizeram parte do estudo 72 participantes com uma média etária 62,29±14,50 anos. A análise da relação do medo de cair com as características sociodemográficas e clínicas mostrou que este varia em função da idade, do agregado familiar, do apoio recebido, do uso de dispositivo de apoio, da perceção de sobreproteção, da perceção de saúde mental e emocional, da atividade física e do número de quedas. A análise revelou ainda uma correlação significativa entre o medo de cair e o equilíbrio funcional e a força muscular. Conclusões: O presente estudo contribui para o atual conhecimento científico sobre o medo de cair nas pessoas a realizar diálise, uma vez que esta variável foi pouco estudada nesta população.
Background: End Stage Renal Disease (ESRD) implies hemodialysis or peritoneal dialysis. Dialysis presents several risks that affect the quality of life, one of which is the risk of falling, which is associated with frailty after treatments. Fear of falling is frequent after a fall. Fear of falling can also contribute to the risk of falling and becoming eventually a vicious cycle. Fear of falling has been understudied in the population with ESRD. Objectives: This study aimed to evaluate the fear of falling in people with ESRD and its relationship with sociodemographic and clinical characteristics, frequency of falls, muscle strength and functional balance. Methods: A cross-sectional, descriptive-correlational study with a quantitative approach was conducted. A questionnaire based on the checklist of the International Classification of Functioning, Disability and Health was used to collect sociodemographic and clinical data and frequency of falls in the sample. Fear of falling was assessed through a question added to the questionnaire and by applying the Activity-specific Balance Confidence Scale (ABC). Functional balance was assessed through the Five Times Sit to Stand Test and muscle strength through isometric digital dynamometer. Data analysis was performed using descriptive and inferential statistics . Results: The study included 72 participants with a mean age of 62.29 ± 14.50 years. Fear of falling varied significantly according to age, family, support received, the use of assistive device, the perception of overprotection, perception of mental and emotional health, physical activity and the number of falls. Significant correlation between fear of falling and functional balance and muscle strength was also found. Conclusions: The present study contributes to the current scientific knowledge about the fear of falling in people undergoing dialysis, as this variable has been understudied in this population.
Chavez, Marin Alfonso Alejandro. "Análisis de los factores que inciden en la eficiencia terminal del estudiante de Nivel Medio Superior utilizando una Red Neuronal Artificial." Tesis de maestría, Universidad Autónoma del Estado de México, 2019. http://hdl.handle.net/20.500.11799/105021.
Full textCavalleretti, Federico <1992>. "I Social Media nel settore turistico termale: il caso Continental Terme Hotel." Master's Degree Thesis, Università Ca' Foscari Venezia, 2018. http://hdl.handle.net/10579/12172.
Full textLombana, Bermudez Andres Alberto. "The "New" sounds of the slap-of-the-stick : Termite Terrace (1937-1943) and the slapstick tradition." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45375.
Full text"August 2008."
Includes bibliographical references (p. 150-153).
This thesis argues that slapstick is a mode of comedy that has become a tradition because its basic principles of physical violence and disruption, and its conventions of grotesque movement and of mockery and abuse of the body, have been developed across media, cultures, and eras. Accordingly, this thesis examines the comic routines or lazzi -independent and modular micronarratives- where the slapstick principles and conventions have been formalized, and explores their different reinterpretations: from Commedia dell'Arte to American Vaudeville to American live-action comedy to American animation. Since sound plays a major role inside the lazzi, the analysis focuses on the sound practices and technologies that have been used across media to produce comic effects. In addition, this thesis claims that the theatrical animated cartoons -Looney Tunes and Merrie Melodies- made at Termite Terrace between 1937 and 1943 embody the slapstick tradition, reinvigorate it, and transform it. The thesis explains the production processes (technologies and practices) that led up to the creation of an energetic audiovisual rhythm and the sophisticated orchestration of all the sound elements (music, voices, sound-effects) in complex soundtracks. Finally, an audiovisual analysis of seven animated shorts reveals a sonic vocabulary for depicting the cartoon body and shows the schizophonic mimesis that takes place when using it. All in all, the study of the Looney Tunes and Merrie Melodies of this time period reveals the interplay between convention and innovation that characterizes the slapstick style of Termite Terrace, a style that years later became the trademark of Warner Bros. animation.
by Andres Alberto Lombana Bermudez.
S.M.
PIRODDI, LUCA. "Sistemi di telerilevamento termico per il monitoraggio e la prevenzione dei rischi naturali: il caso sismico." Doctoral thesis, Università degli Studi di Cagliari, 2011. http://hdl.handle.net/11584/266251.
Full textMascioli, Marco. "Analisi di un sistema energetico per il recupero di cascami termici a medio-alta entalpia di tipo "dual-loop"." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18653/.
Full textSchulz, Carmita. "Aconselhamento pastoral em meio a crises de doença e morte." Faculdades EST, 2009. http://tede.est.edu.br/tede/tde_busca/arquivo.php?codArquivo=177.
Full textIn this work we present a study of Practical Theologys discipline, with the analysis of the pastoral counseling ahead of crises caused by illness that leads to the death. The first part treats the death, as the last stage of the life, searching to understand the cases of grave diseases; the death; the behavior of the human being together with its familiar ones; its attitudes; thoughts; the silence and the hope. And the human beings behavior during a grave illness until the death. The second part relates to the crisis generated by the terminal illness; the definition and the types of crises; how to deal with the crises. We speak, also, on the survival of the families after losses, especially, being a crisis that culminated in death, using it as growth factor. We analyze the pastoral relation, its objectives and methods of support in case of crises by the terminal illness. The third and last part brings a small record of the history of the pastoral counseling; some historical contributions; as counseling became and as it arrived until us. Some forms of boarding with dying and its families, and how this can be used with diseased in the threshold of the death. We verify that in almost all the situations with sick terminals and death, the human being needs some counseling.
Takehana, Elisabet 'Osk. "Chuck Palahniuk and Jean Baudrillard: The terminal state of human subjectivity." CSUSB ScholarWorks, 2006. https://scholarworks.lib.csusb.edu/etd-project/3039.
Full textFerreira, Ligia Silva Damasceno. "Migração de umidade causada por gradientes termicos entre duas fronteiras impermeaveis contendo um meio poroso não saturado." reponame:Repositório Institucional da UFSC, 1987. http://repositorio.ufsc.br/xmlui/handle/123456789/75386.
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O presente trabalho investiga o fenômeno da migração de umidade devido a gradientes térmicos entre duas fronteiras impermeáveis contendo um meio poroso não saturado. Sua motivação advém da necessidade de se conhecer o processo de secagem que ocorre em solos que envolvem cabos de potência aterrados. Dois modelos são analisados. O primeiro é uma análise paramétrica onde as propriedades difusivas e termofísicas do meio são constantes, enquanto que o segundo considera a variação das propriedades com a temperatura e o conteúdo de umidade. Ambos os modelos são aplicados a duas geometrias, plana e cilíndrica, e resolvidos numericamente. O objetivo principal deste trabalho é verificar o erro associado à utilização de propriedades constantes. Os resultados para os dois modelos foram comparados para quatro valoresde umidade inicial, 0,026, 0,103, 0,155 e 0,206 e três diferenças de temperatura entre as fronteiras, 1, 5 e 10oC. Os desvios associados à análise paramétrica aumentam com o aumento do gradiente de temperatura. Além disto, a discrepância entre os dois modelos é maior para conteúdos de umidade próximos àquele onde começa a existir continuidade da fase líquida. Para o meio analisado no presente trabalho esta umidade é em torno de 0,13. Recomenda-se, assim, o uso do modelo paramétrico para gradientes de temperatura baixos e/ou para solos muitos secos ou muito úmidos. Para os demais casos, o modelo paramétrico serve como uma primeira aproximação do problema.
SILVA, A. L. L. "Análise da capacidade operacional de um terminal portuário de importação de fertilizantes por meio da simulação." Universidade Federal do Espírito Santo, 2011. http://repositorio.ufes.br/handle/10/3940.
Full textEsta dissertação apresenta uma análise da operação de um terminal portuário de fertilizantes, considerando-se a atual infraestrutura disponível, as características operacionais existentes e os possíveis cenários futuros, visando uma melhor utilização dos recursos disponíveis no terminal. O método em questão proposto constou da caracterização da operação do terminal portuário, identificação das variáveis pertinentes para o desenvolvimento do modelo e coleta e análise dos dados. Com isto, utilizou-se o software de simulação chamado Rockwell Arena para a construção do modelo de simulação, representando a operação portuária, o qual foi validado para as condições operacionais do cenário atual. A partir do modelo representativo do cenário atual foram gerados seis cenários alternativos, levando em consideração mudanças na operação portuária quanto o aumento na demanda de navios, vagões e caminhões. Por meio da análise dos resultados é possível concluir que as alterações na configuração operacional, propostas em alguns cenários, são viáveis. No que diz respeito ao aumento da demanda dos modos de transporte, conclui-se que é viável até determinado ponto, uma vez que tal incremento da demanda coloca em risco a operação de todo o sistema em virtude da capacidade limitada de alguns recursos.
Santos, Danilo Vitorino dos [UNESP]. "Caracterização química e estudo térmico de lodos provenientes da estação de tratamento de esgotos de Ribeirão Preto, SP, Brasil." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/124537.
Full textAtualmente, a degradação ambiental ocupa lugar de destaque e faz surgir grande preocupação acerca dos impactos que a contaminação urbana pode causar ao meio ambiente e à saúde humana. Visando a descontaminação de águas residuárias, as ETEs ocupam importante papel na preservação ambiental e promovem aumento na qualidade de vida da população, porém, como produto intrínseco do processo de tratamento de efluentes, os resíduos sólidos (lodos) são gerados em grande quantidade e podem representar elevado impacto ambiental. Este trabalho apresenta uma caracterização química detalhada desses lodos, incluindo um estudo térmico e cinético desta matriz. Os lodos analisados são provenientes de cada etapa da linha de lodo (adensador, flotador, biodigestor e silo de estocagem) da ETE Ribeirão Preto. O estudo foi realizado empregando-se a análise térmica (TG, DTA e DSC) e técnicas complementares: DQO, DRX, SEM/EDS, DLS, FTIR, AAS, análise elementar (CNHS-O) e CG-FID/TCD. Os parâmetros cinéticos (E e A) e o KCE foram determinados empregando o método isoconversional integral análogo ao de Wanjun e Donghua. Os resultados de DQO mostram que os lodos possuem grande quantidade de MO. Os dados DRX também confirmam tal resultado, caracterizando o estado amorfo da matéria. Os resultados de SEM/EDS mostram a ocorrência de superfícies heterogêneas, irregulares e porosas; grande variedade de partículas com estruturas esféricas e filamentosas contendo, principalmente, C, O, Ca, Si, P, Al e Fe. Os dados obtidos por DLS revelam que as partículas constituintes dos lodos apresentam tamanhos que variam de 78 - 6440 nm. A análise por FTIR revelou a presença dos seguintes grupos funcionais: OH (água, fenóis, álcoois); CH (compostos alifáticos); C=O (cetonas, ésteres, quinonas, carboxilatos e ácidos carboxílicos coordenados com metais); C N e C=C (compostos aromáticos); C=O, NO e SO...
Nowadays, the environmental degradation is a major concern and brings up great concern about the impact that urban pollution can cause to the environment and human health. In search of the decontamination of urban wastewater, the Sewage Treatment Plants (STP) play a major role in environmental preservation and promote increase in population's quality of life, however, as an intrinsic product of the wastewater treatment process, solid waste (sludge) are generated in large quantities and can represent high environmental impact. This work presents a detailed characterization of this kind of residues, including a thermal and kinetic study of this matrix. The analyzed samples of sludge come from each step of sludge line (thickener, flotator, biodigester and storage shed) of Ribeirão Preto STP. The study was conducted employing analysis (TGA, DTA and DSC) and complementary techniques such as: COD, XRD, SEM/EDS, DLS, FTIR, AAS, elemental analysis (CNHS-O) and GC-FID/TCD. The kinetic parameters (E and A) and KCE was determined using the method analogous to the Wanjun and Donghua isoconversional integral method. The results of COD showed that the sludge samples have large amounts of organic matter (OM). The XRD data also confirm this result, characterizing the amorphous state of matter. SEM/EDS results showed the occurrence of heterogeneous, irregular and porous surfaces; wide variety of particles with spherical and filamentous structures consisting of mainly C, O, Ca, Si, P, Al and Fe. The data obtained from DLS revealed that the sludge particles have sizes ranging from 78 - 6440 nm. FTIR analysis revealed the presence of the following functional groups: OH (water, phenols, alcohols); CH (aliphatic); C=O (ketones, quinones, carboxylic acids and carboxylates coordinated with metals); CN and C=C (aromatics); C=O, NO and SO (carboxylates, nitrates and sulfates); C=O, SO, OC=O and SiO...
Donca, Rafael. "Modelagem matemática e simulação da transferência de calor e massa através de um meio poroso têxtil." reponame:Repositório Institucional da UFSC, 2013. https://repositorio.ufsc.br/handle/123456789/107458.
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O conforto térmico entre o corpo humano e o meio ambiente depende da capacidade de dissipação de calor entre o corpo humano e o ambiente externo, através da vestimenta. A transferência de calor, no entanto, está intimamente relacionada às propriedades físicas do tecido, e depende também da transferência de vapor d'água - isto é, umidade - através do material têxtil, levando em conta seus fenômenos de mudança de fase. Este estudo aplica um modelo matemático para simular a transferência de calor e massa através de um domínio de cálculo composto por tecido de isolamento poroso revestido por um tecido de isolamento, e discute a evolução dos perfis de temperatura, umidade relativa e teor total de água absorvido ao longo do tempo, para uma condição de clima típica de inverno na cidade de Florianópolis-SC. Os resultados indicam que uma espessura de três centímetros de tecido de isolamento poroso é eficaz em proteger a pele humana das condições externas desconfortáveis, e que o mecanismo convectivo de transporte é importante não só no inicio, mas sim em todos os instantes do processo de transferência de calor e massa, apesar dos valores de velocidade do vapor da água decaírem com o tempo. Também se conclui que a resistência à transferência de calor e massa imposta pelo tecido de revestimento que envolve o domínio de cálculo é também importante para atenuar os efeitos das condições desconfortáveis do ambiente externo.
Abstract : The thermal comfort between the human body and the environment depends on heat dissipation capacity from the body for the external environment. The heat transfer, however, is deeply related to the physical properties of the fabric and also depends on the mass transfer through the fabric, taking in account the phase change phenomena. This study applies a mathematical model to simulate the heat and mass transfer through a domain of calculus made of isolation porous fabric which is involved by a thin layer of a coater fabric, and discuss the evolution of temperature, relative humidity and water content profiles, through time, for a typical climate condition of a winter day in the city of Florianopolis-SC. The results show that a thickness of three centimeters of isolation fabric is effective to protect the human skin from the uncomfortable conditions of the external environment. The results also show that the convective transfer mechanism is important not only in the beginning of the heat and mass transfer process, but also in the whole time, despite the velocity values decaying through the time. It can be also conclude that the heat and mass transfer resistance, imposed by the coater fabric is important to attenuate the uncomfortable effects of the external environment climate conditions.
Treutlein, Klaus. "Materialflußorientierte Termin- und Kapazitätsplanung : ein Konzept für Serienfertiger ; mit ... 5 Tabellen /." Berlin u.a. : Springer, 1990. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=001763667&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textZugl.: Aachen, Technische Hochsch., Diss. u.d.T.: Treutlein, Klaus: Entwicklung eines Konzeptes zur materialflußorientierten Termin- und Kapazitätsplanung bei variantenreicher Serienfertigung.
Völker, Sven. "Reduktion von Simulationsmodellen zur simulationsbasierten Optimierung in der Termin- und Kapazitätsplanung /." Frankfurt am Main : Lang, 2003. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=010271711&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textSantos, Danilo Vitorino dos. "Caracterização química e estudo térmico de lodos provenientes da estação de tratamento de esgotos de Ribeirão Preto, SP, Brasil /." Araraquara, 2014. http://hdl.handle.net/11449/124537.
Full textBanca: Clóvis Augusto Ribeiro
Banca: Jorge Manuel Vieira Capela
Banca: Sonia de Almeida
Banca: Valdir Schalch
Resumo: Atualmente, a degradação ambiental ocupa lugar de destaque e faz surgir grande preocupação acerca dos impactos que a contaminação urbana pode causar ao meio ambiente e à saúde humana. Visando a descontaminação de águas residuárias, as ETEs ocupam importante papel na preservação ambiental e promovem aumento na qualidade de vida da população, porém, como produto intrínseco do processo de tratamento de efluentes, os resíduos sólidos (lodos) são gerados em grande quantidade e podem representar elevado impacto ambiental. Este trabalho apresenta uma caracterização química detalhada desses lodos, incluindo um estudo térmico e cinético desta matriz. Os lodos analisados são provenientes de cada etapa da linha de lodo (adensador, flotador, biodigestor e silo de estocagem) da ETE Ribeirão Preto. O estudo foi realizado empregando-se a análise térmica (TG, DTA e DSC) e técnicas complementares: DQO, DRX, SEM/EDS, DLS, FTIR, AAS, análise elementar (CNHS-O) e CG-FID/TCD. Os parâmetros cinéticos (E e A) e o KCE foram determinados empregando o método isoconversional integral análogo ao de Wanjun e Donghua. Os resultados de DQO mostram que os lodos possuem grande quantidade de MO. Os dados DRX também confirmam tal resultado, caracterizando o estado amorfo da matéria. Os resultados de SEM/EDS mostram a ocorrência de superfícies heterogêneas, irregulares e porosas; grande variedade de partículas com estruturas esféricas e filamentosas contendo, principalmente, C, O, Ca, Si, P, Al e Fe. Os dados obtidos por DLS revelam que as partículas constituintes dos lodos apresentam tamanhos que variam de 78 - 6440 nm. A análise por FTIR revelou a presença dos seguintes grupos funcionais: OH (água, fenóis, álcoois); CH (compostos alifáticos); C=O (cetonas, ésteres, quinonas, carboxilatos e ácidos carboxílicos coordenados com metais); C N e C=C (compostos aromáticos); C=O, NO e SO...
Abstract: Nowadays, the environmental degradation is a major concern and brings up great concern about the impact that urban pollution can cause to the environment and human health. In search of the decontamination of urban wastewater, the Sewage Treatment Plants (STP) play a major role in environmental preservation and promote increase in population's quality of life, however, as an intrinsic product of the wastewater treatment process, solid waste (sludge) are generated in large quantities and can represent high environmental impact. This work presents a detailed characterization of this kind of residues, including a thermal and kinetic study of this matrix. The analyzed samples of sludge come from each step of "sludge line" (thickener, flotator, biodigester and storage shed) of Ribeirão Preto STP. The study was conducted employing analysis (TGA, DTA and DSC) and complementary techniques such as: COD, XRD, SEM/EDS, DLS, FTIR, AAS, elemental analysis (CNHS-O) and GC-FID/TCD. The kinetic parameters (E and A) and KCE was determined using the method analogous to the Wanjun and Donghua isoconversional integral method. The results of COD showed that the sludge samples have large amounts of organic matter (OM). The XRD data also confirm this result, characterizing the amorphous state of matter. SEM/EDS results showed the occurrence of heterogeneous, irregular and porous surfaces; wide variety of particles with spherical and filamentous structures consisting of mainly C, O, Ca, Si, P, Al and Fe. The data obtained from DLS revealed that the sludge particles have sizes ranging from 78 - 6440 nm. FTIR analysis revealed the presence of the following functional groups: OH (water, phenols, alcohols); CH (aliphatic); C=O (ketones, quinones, carboxylic acids and carboxylates coordinated with metals); CN and C=C (aromatics); C=O, NO and SO (carboxylates, nitrates and sulfates); C=O, SO, OC=O and SiO...
Doutor
Naranjo, Gaviria Alejandro Antonio. "Avaliação por simulação computacional de ventilação de cozinhas residenciais em clima quente e úmido na Colômbia por meio de chaminés solares." Florianópolis, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/100507.
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O aumento considerável das cargas de resfriamento devido às fontes internas e externas e o acumulo de ar poluído devido aos processos de cocção, fazem com que o melhoramento do comportamento térmico e da ventilação de uma cozinha residencial localizada em clima quente e úmido seja prioritário. A ventilação pode constituir uma estratégia eficiente para resolver esses problemas. Porém, localidades geográficas que possuem momentos consideráveis de calmaria em relação ao vento como, por exemplo, a cidade de Quibdó na Colômbia, requerem o uso de outras estratégias de condicionamento. Pesquisas anteriores demonstraram as possibilidades de utilização das chaminés solares para melhorar o desempenho ambiental de um espaço localizado sob essas condições climáticas. Com o intuito de avaliar o potencial das chaminés solares sobre uma cozinha residencial, neste trabalho foi utilizado um método de simulação computacional através do programa Energyplus. Na modelagem das aberturas da chaminé, encontrou-se que o objeto "Horizontal Opening", incluído na versão 7.0 desse programa, não representa adequadamente a ventilação gerada pela diferença de temperatura. Entre os resultados, verificou-se (1) que a presença de vento potencializava o "efeito chaminé" sem importar a direção que tivesse a corrente, (2) a inclinação da chaminé em 50° é o valor que permite atingir o melhor comportamento da cozinha para a latitude de Quibdó, (3) a localização da cozinha na planta arquitetônica que permitiu obter o melhor comportamento devido ao uso de uma chaminé é aquela na qual se tem o maior afastamento no plano vertical entre as aberturas de entrada e saída da chaminé e (4) encontrou-se que a melhoria obtida através do aumento da área de absorção na chaminé tem um limite quando considerado o dia inteiro. A partir das simulações realizadas para o dia inteiro, conclui-se que o uso de chaminés solares não produziu melhorias significativas na temperatura e na ventilação de cozinhas residenciais localizadas no clima quente e úmido de Quibdó.
The significant increase in cooling loads due to internal and external sources and the accumulation of polluted air due to cooking, make the improvement of thermal and ventilation performance of a residential kitchen located in hot and humid climate a priority. The ventilation is an effective strategy to solve these problems. However, geographical places which have considerable moments without wind, like the case of Quibdó - Colombia, require the use of other conditioning strategies. Previous researches have shown the possibility of using solar chimney´s to improve the performance of a space located under such climatic conditions. This work used the Energyplus simulation software for evaluating the potential of a solar chimney on a residential kitchen. Modeling the chimney openings, it was found that the "Horizontal Opening" object included in version 7.0 of this program doesn´t represent adequately the ventilation created by the stack effect. Among the results, it was found (1) that the presence of wind enhanced the stack effect regardless of the flow direction, (2) a slope of 50° for the chimney absorber surface is the ideal inclination value to achieve the best performance in a kitchen located in the Quibdó latitude, (3) the kitchen location within the house which allowed to obtain the best performance due to the use of a solar chimney, was that which let to have a larger distance between the inlet and outlet on the vertical plane and (4) it was found that the performance improvement obtained due to the increase in the chimney absorption area has a limit when considered the whole day. Based on daily simulations, it was concluded that the solar chimney use didn´t produce significant improvements in the temperature and ventilation of a residential kitchen located in the hot and humid climate of Quibdó.
Di, Nardo Gabriele. "Progettazione di un impianto solare termico per produzione di acqua calda sanitaria." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Find full textOliveira, McWilliam. "Carga de trabalho dos controladores de tráfego aéreo - análise da área de controle terminal Brasília por meio de simulação." Instituto Tecnológico de Aeronáutica, 2007. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=520.
Full textPosa, Alice. "Ottimizzazione delle prestazioni termiche ed acustiche di pannelli sandwich isolanti per facciata." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Find full textPaula, Roberta Zakia Rigitano de. "A influencia da vegetação no conforto termico do ambiente construido." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257742.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
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Resumo: É fato conhecido que a vegetação tem um papel preponderante na atenuação da radiação solar incidente e na obtenção de um microclima que proporcione maiores condições de conforto térmico. O presente trabalho apresenta estudos para avaliação da atenuação do ganho de calor solar, por espécies arbóreas, no ambiente construído. Na pesquisa foram realizadas medições dos parâmetros ambientais: temperatura, umidade relativa, temperatura de globo, no interior de duas residências de um conjunto habitacional, comparando-se as situações com e sem sombreamento proporcionado por mudas de ipê roxo. As medições foram realizadas em ambientes com fachadas sujeitas a alta incidência de radiação solar, e praticamente idênticas. Posteriormente, foram realizadas medições em protótipos construídos na Unicamp com outra espécie arbórea, a acácia, com o objetivo de corroborar os primeiros resultados obtidos. Dois protótipos, um com a fachada envidraçada sombreada e o outro com a fachada exposta à radiação foram analisadas. Fachadas orientadas a Norte e a Oeste foram analisadas em períodos distintos. Nesse experimento foram medidas também as temperaturas superficiais dos vidros das fachadas. Observou-se que, em geral, as temperaturas do ar interno na situação sombreada são menores que na situação sem sombreamento, e principalmente as temperaturas superficiais. Os resultados demonstraram que o sombreamento com vegetação pode trazer uma contribuição significativa para o conforto térmico em ambientes internos
Mestrado
Edificações
Mestre em Engenharia Civil
Lobe, Sebastian. "Unternehmensbewertung und Terminal Value : operative Planung, Steuern und Kapitalstruktur /." Frankfurt am Main [u.a.] : Lang, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014604841&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textPogianelo, Marcus Luiz. "Análise do Espaço Aéreo Brasileiro por meio de simulação "fast time" - estudo de caso na área de controle terminal Recife." Instituto Tecnológico de Aeronáutica, 2008. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=493.
Full textCremonini, Fabio. "Influenza dei fattori di vista nel calcolo delle condizioni di comfort termico in ambienti con impianti radianti." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.
Find full textDUARTE, MARCOS. "Caracterizacao do BaLiFsub3:Cosup2+ visando sua utilizacao como meio laser ativo .Estudo de suas propriedades espectroscopicas e determinacao da difusidade termica." reponame:Repositório Institucional do IPEN, 1994. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10408.
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Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
Mosciatti, Rosaria. "Comfort termico nei nuovi edifici isolati. Impatto della superficie vetrata e del tipo di impianto." Doctoral thesis, Università Politecnica delle Marche, 2012. http://hdl.handle.net/11566/242040.
Full textThe main thermal comfort problems in wintertime, which may occur in new well insulated buildings, are : the cold zone caused by low inside surface temperature of window; and large variation in the room temperature, due to changes in internal loads. The object of this thesis is an analysis of different hating systems and their efficiency in solving such drawbacks. Therefore the main focuses of the thesis are to experimentally and numerically investigate : - The discomfort penetration depth caused by cold window in wintertime. - The difference, in terms of thermal comfort and energy consumption, between two type of low temperature heating systems : radiators and floor heating. For this purpose experimental campaigns in two real case studies and in a test room, under controlled condition, were set up. Computational fluid dynamic (CFD) analysis have been conducted to assess the influence of Window To Wall Ratio (WWR) on indoor thermal comfort. Dynamic whole building analysis have been conducted to predict the differences, in terms of thermal comfort and energy consumption, between two different low temperature heating systems. Thermal comfort was evaluated, from experimental and numerical results, using the Predicted Mean Vote (PMV) method proposed by UNIEN ISO 7730. Both CFD model and transient thermal model was validated with experimental measurements and, then, used in the investigation. The experimental results, obtained from real buildings, indicate that radiant floor heating system does not ensure comfort during its operation time. Moreover changes in internal loads led uncontrolled large variation in temperature and PMV. The experimental results, obtained from test room, showed that discomfort penetration depth with low temperature radiators, was about 0,5m. While discomfort penetration depth with radiant floor heating systems was about 1,2m. The CFD analysis showed that the influence of windows geometry, related to parameter Window to Wall Ratio (WWR), on thermal comfort was considerable. The results of transient thermal simulation demonstrate that thermal comfort difference between radiators and floor heating systems are negligible. However low temperature radiators, using intermittently control strategy, save between 20% and 25% energy than floor heating systems. Therefore in new insulated buildings low temperature radiators are the most efficient and cost-effective way to ensure a good level of thermal comfort and to save energy.
Higa, Caio Vinicius. "Políticas de transporte coletivo em São Paulo entre 2001 e 2010: meio ambiente construído, sistemas técnicos e organização dos serviços de transporte." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/8/8136/tde-15032013-113927/.
Full textThis research aims to analyze the characteristics of collective transportation policies in São Paulo, between 2001 and 2010. Based on the understanding of the current urban development model, which gave priority to individual and private transport on wheels, as well as a socio-spatial segregated role - we will try to define what were the main actions undertaken in this sector, considering: the historical evolution of transport policies from the early twentieth century, major public transport policy since 2001 (implementation of bus corridors, modal integration, implementation of the Bilhete Único ticket etc.), analysis of the impact of these policies on the dynamics of the urban mobility. We also intend to interpret the relationships between the municipal administrations that governed the city during this period (governments of Suplicy - 2001 2004, Serra / Gilberto Kassab - 2005 2008, and Gilberto Kassab - from 2009 to 2010) with the main agents involved with the urban dynamics (municipal political elite, businessmen and urban entrepreneurs, civil society and users of public and private transport, mainly) and other interest groups, analyzing how and through which instruments the urban mobility public policies have been developed.
Froio, Martina. "Il laser in ambito medico e le sue applicazioni terapeutiche: termoterapia interstiziale laser." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21368/.
Full textJong, G. de. "Causal loops in long-term supply relationships : theory and evidence from the United States, Japan and Europe /." Capelle a/d IJssel : Labyrint, 1999. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=008859460&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textLopes, Edmar Maria Lima. "Desempenho termico da espuma poliuretana a base de oleo de mamona utilizada em componentes da edificação (subcoberturas) : estudo em Ilha Solteira, SP." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257753.
Full textTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
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Resumo: O óleo de mamona após seu processamento e síntese, dá origem a uma poliuretana, termicamente compatível com as poliuretanas de origem petroquímica, mas com toxidade quase nula e baixa flamabilidade. A utilização da espuma de mamona é ecologicamente correta por tratar-se de uma fonte vegetal renovável, não tóxica durante o seu manuseio Através da experimentação de 4 (quatro) células-teste em escala 1: 1 foram utilizadas placas de espuma poliuretana de mamona, como isolante térmico em coberturas. A diferença entre as células-teste apresenta-se na localização das placas de resina poliuretana. Na quarta célula-teste (casa 4), está localizada a central de tomada dos dados. Na primeira (casa 1), a espuma poliuretana encontra-se em forma "sandwich", localizada entre as telhas de fibrocimento. A segunda (casa 2), não possui nenhum tipo de isolamento térmico - é a célula-teste utilizada como referência para este estudo e na terceira (casa 3), a espuma poliuretana é colocada diretamente sobre a laje. O trabalho teve como objetivo verificar comparativamente, a resposta térmica das coberturas utilizando a espuma poliuretana de mamona como isolante térmico na cobertura, englobando duas estações climáticas, final do verão e o inverno. Em diferentes períodos da pesquisa utilizou-se as telhas de fibrocimento em sua cor natural e com a telha pintada na cor branca. Foram registradas as temperaturas de bulbo seco, bulbo úmido e de globo internas e externas do ar e as temperaturas superficiais dos elementos construtivos componentes da cobertura. A análise dos dados foi feita comparando-se as temperaturas de cada uma das células - teste, com as temperaturas externas, tomadas por uma pequena estação meteorológica. O experimento foi desenvolvido na cidade de Ilha Solteira/SP, região noroeste do estado A célula-teste 1 (casa 1), que possui o isolante térmico em forma "sandwich " entre as telhas e com as telhas pintadas na cor branca, apresentou melhor desempenho térmico, para utilização no inverno-seco e, a célula-teste 3 (casa 3), com o isolante diretamente sobre a laje e com as telhas pintadas de branco, demonstrou melhor comportamento térmico no verão quente-úmido.
Abstract: The aim of this work is to describe an experimental study using castor oil foam as an insulating material inside the roof. The castor oil foam inside the roof is an appropriate natural recycled material as a passive cooling strategy as opposite to the burning of fossil fuels for air conditioning (AC) and mechanical ventilation. The expected result of this research is the possibility of contributing to improve thermal comfort and quality of life in the built environment. This experimental study is based on collecting data under real climate conditions of temperature and humidity to investigated the thermal performance in four test-cells with castor oil foam inside their roofs, in the city of Ilha Solteira located at northwest region of São Paulo State, in Brazil. In this research four test-cells constructions were used for data collection of ambient and surfaces temperatures with dimensions 3,00 x 2,00 x 2,50 m in real scale. The first test-cell was composed with insulating material like a sandwich. The second one with no insulating material was taken by reference. The third one was had insulating material on the flag and on the fourth was found the central of data collection. This work compared about the behavior in the test-cells applying castor oil foam on four different periods of the year: two on the summer and two in the winter. Results showed up the best thermal performance on the summer period was demonstrated on the test-cell no 3, presenting white roofing. Otherwise in the winter, the best thermal behavior was presented on the test cell no 1, with white roofing, too.
Universidade Estadual de Campi
Arquitetura e Construção
Doutor em Engenharia Civil
Kuhn, Kamden. "Talking with ALS Patients: An Exploratory Study of Patient Attitudes toward Mass Messages about ALS." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3193.
Full textOliveira, Therezinha Maria Novais de. "Eco-estratégia empresarial no setor metal-mecânico da Escola Técnica Tupy /." Florianópolis, SC, 1998. http://repositorio.ufsc.br/xmlui/handle/123456789/77557.
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Colabone, Rosângela de Oliveira [UNESP]. "Determinação da difusividade térmica de um solo incorporado com resíduo de E.T.A." Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/91927.
Full textA questão da disposição final dos resíduos sólidos, gerados pelas indústrias e pela população, é um grande desafio a ser solucionado pelas empresas e entidades ligadas à conservação do meio ambiente. Uma das alternativas para o descarte racional destes resíduos é a sua incorporação ao solo. O conhecimento das propriedades térmicas de um solo incorporado com resíduo é importante para garantir que esta alternativa não interfira, por exemplo, na capacidade do solo em difundir energia necessária para o crescimento das plantas. Este trabalho envolveu a determinação da difusividade térmica de amostras de um solo incorporado com resíduo gerado por uma Estação de Tratamento de Água, da cidade de Rio Claro. A determinação da difusividade térmica das amostras foi baseada no método utilizado por CLIVATI (1991). A partir da medição da temperatura em função do tempo, numa determinada posição, foi possível obter as difusividades térmicas de cada amostra em duas condições de umidades diferentes. Para as umidades utilizadas, os resultados mostraram que a incorporação do resíduo de E.T.A nas proporções especificadas não alterou, significativamente, os valores da difusividade térmica do solo estudado. Estes resultados indicam que o fluxo de calor no solo praticamente não é afetado pela incorporação do resíduo.
The question of the final disposition of the solid residues generated by the industry and the population is a big challenge to be solved by the corporations and entity concerned with the preservation of the environment. One of the alternatives for the rational dump of these residues is its incorporation to the soil. The knowledge of the thermal properties of a soil incorporated with residue is important to assure that this alternative, for example, doesn't interfere in the capacity of the soil to diffuse the necessary energy for the growth of the plants. This work has involved the determination of the thermal diffusivity in the samples of a soil incorporated with residue generated by a Treatment Water Station (T.W.S.), in the city of Rio Claro. The determination of the thermal diffusivity of the samples was based in the method used by CLIVATI (1991). From the temperature measurement in time function, in the certain position, it was possible to obtain the thermal diffusivities of each sample in two conditions of different moisture. For the used moisture, the results showed that the incorporation of the T.W.S. residue, at the specified proportions, did not change, the thermal diffusivities values of the studied soil in a significant manner. These results indicate that the heat flux in the soil practically is not affected by the residue incorporation.