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Academic literature on the topic 'Sensore ossigeno'
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Dissertations / Theses on the topic "Sensore ossigeno"
PUTIGNANO, OSCAR. "Development of a Cherenkov based diagnostic for gamma-rays from fusion plasmas and advanced medical applications." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/402358.
Full textAim of this thesis, begun in November 2019, is the development of an innovative Cerenkov detector for measurements of 17 MeV gamma-rays emitted by the D-T fusion reaction in an intense neutron field. With the spread of the COVID-19 pandemics in Northern Italy in February 2020, it became clear that the original program planned for my PhD work had to be significantly changed, since experimental activities to be carried out in the UNIMIB/CNR laboratories in Milan and at the Joint European Torus in the UK had to be cancelled. In agreement with my tutors I volunteered together with other scientists to contribute to a project called Mechanical Ventilator Milan (MVM). The MVM project involved an international team of more than 150 scientists and has produced over the very short period of less than three months a mechanical ventilator approved by the American Food and Drug Administration for use at the intensive care unit of hospitals to treat patients affected by COVID-19. The activities of the MVM project led to the development of a new fast oxygen sensor for medical application, about one year later. The sensor measures the oxygen consumption in real time during a single breath. The thesis is organized in three parts. The first part is focused on the development of a gamma-ray counter optimized for the measurement of the D-T fusion power produced in a magnetic confinement fusion device. The research team I have joined is developing a novel technique for the measurement of DT fusion power in a magnetic confinement device based on the detection of 17 MeV gamma-rays also produced by the D+T->5He* reaction. The 5He* nucleus promptly decays usually emitting an alpha particle and a neutron, but it may de-excite to the ground level emitting a gamma-ray with a probability of the order of 10^-5. These gamma-rays have been detected in the recent DT campaign at JET with a gamma spectrometer based on LaBr3 and a fast digital data acquisition. Since the efficiency of the scintillator to high energy gamma-rays and neutrons are comparable, the use of a dedicated LiH based neutron attenuator to observe the weak gamma-ray signal is needed. To overcome the limitations posed by the sensitivity of LaBr3 detectors to neutrons, I designed a gamma-ray gas detector optimized to work in the presence of an intense neutron field. The detector is based on the Cherenkov effect and simulations indicate that it is 10^6 times more sensitive to gamma-rays than to neutrons. The next step would be to build a prototype of the detector to validate the simulation results and to test it on a D-T neutron source. The second part of the thesis describes the design and build of the IFOx sensor, an ultra-fast oxygen sensor that can be used for lung analysis by working in the so called mainstream configuration. Since the working principle of the IFOx sensor somewhat resembles the one of a scintillator detector, this is an example of knowledge transfer from nuclear diagnostics to a different application. The prototype that was built features excellence time response and was used in a trial study on healthy volunteers to measure the Functional Residual Capacity. The excellent results of the trial study on healthy volunteers has opened up the possibility to carry out a clinical study on intensive care unit patients in the near future, by integrating the oxygen sensor with mechanical ventilators. The last part of the thesis is about the MVM project and describes the ventilator design aimed to the production of a ventilator composed of a few parts so that it can be rapidly built on large scales even during the disruption of the components supply chain. I was able to contribute to the project thanks to my knowledge of gas systems, advanced real time controls, and I participated in the measurement required for the certification. The key results that led to a full certification for usage on patient by the European Commission are also described in this work.
Bonafè, Filippo. "Studio e caratterizzazione di sensori di ossigeno a base di PEDOT:PSS per applicazioni in coltura cellulare." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16742/.
Full textBaldoni, Chiara. "Sviluppo e caratterizzazione di sensori elettronici a base di polimeri conduttori per ossigeno e dopamina in soluzione." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19144/.
Full textScaggiante, Edoardo. "Sviluppo e validazione di sensori per il monitoraggio di pazienti in terapia con concentratore di O2." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22960/.
Full textGuerra, Davide <1991>. "Uso di parametri chimico-fisici come traccianti per caratterizzare masse d'acqua in Mediterraneo occidentale. Misure di ossigeno disciolto e salinità per la calibrazione dei sensori." Master's Degree Thesis, Università Ca' Foscari Venezia, 2017. http://hdl.handle.net/10579/11881.
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