92 research outputs found
Il progetto Lab2Go per la diffusione della pratica laboratoriale nelle Scuole Secondarie di II grado
Even if laboratory practice is essential for all scientific branches of knowledge, it is often neglected at High School, due to lack of time and/or resources. To establish a closer contact between school and experimental sciences, Sapienza Università di Roma and the Istituto Nazionale di Fisica Nucleare (INFN) launched the Lab2Go project, with the goal of spreading laboratory practice among students and teachers in high schools
Development of a plethysmography system for use under microgravity conditions
We present a novel application of strain-gauge plethysmography that is suitable to detect blood volume variations in the human venous system. The plethysmography system uses capacitive sensors that are electrically connected to a portable electronic unit to record changes of blood volume over time. Such system has been developed within a project that aimed to monitor the cerebral venous return of the astronaut during an experiment on the International Space Station. In this work, we describe the novel solution in which measurement of elongation is directly obtained by charging the sensor capacitance with a constant current. We also report the full characterization of the plethysmography system and an example of the experimental protocol that has been performed in microgravity condition. Remarkably, the system we propose is able to detect cross-sectional area variations of neck veins with enough sensitivity to be useful for studies concerning cardiac oscillations
Misura del rapporto di decadimento di B to X_u l nu e determinazione di |V_ub|
none11Vengono presentate la misura del rapporto di decadimento di \chem{B\to X_u l \nu} e la determinazione dell'elemento della matrice CKM, ottenute tramite l'analisi inclusiva dei decadimenti semileptonici senza charm dei mesoni \chem{B}. Il campione di dati analizzato corrisponde a 383 milioni di coppie \chem{B \bar{B}} prodotte nel decadimento della risonanza (4\textit{S}) all'anello di accumulazione PEP-II di SLAC e registrate dal rivelatore BaBarnoneAndreotti M.;
Cibinetto G.;
Calabrese R.;
Luppi E.;
Bettoni D.;
Negrini M.;
Bozzi C.;
Piemontese L.;
Petrella A.;
Cecchi A.;
Santoro V.;Andreotti, Mirco; Cibinetto, Gianluigi; Calabrese, Roberto; Luppi, Eleonora; Bettoni, D.; Negrini, Matteo; Bozzi, C.; Piemontese, L.; Petrella, Antonio; Cecchi, Annalisa; Santoro, Valentin
Inclusive and Exclusive |V(ub)|
The current status of the determinations of CKM matrix element |Vub| via exclusive and inclusive charmless
semileptonic B decays is reviewed
Results from B Factories
none11Recent results from B factories are reviewed. A summary of measurements related to the angles and sides of
the CKM Unitarity Triangle is shown. Measurements of rare B decays, sensitive to new physics processes, as well
as the recent evidence for neutral D meson mixing, are also reported.noneAndreotti M;
Cibinetto G;
Calabrese R;
Luppi E.;
Bettoni D.;
Negrini M.;
Bozzi C.;
Piemontese L.;
Petrella A.;
Cecchi A.;
Santoro V.;Andreotti, Mirco; Cibinetto, Gianluigi; Calabrese, Roberto; Luppi, Eleonora; Bettoni, D.; Negrini, Matteo; Bozzi, C.; Piemontese, L.; Petrella, Antonio; Cecchi, Annalisa; Santoro, Valentin
Lab2Go: a project for supporting laboratory practice in teaching STEM disciplines in high school
The laboratory practice is essential for learning physics and scientific subjects; unfortunately it is often overlooked in teaching. In order to establish a contact between schools and experimental science, Sapienza Università di Roma and INFN launched Lab2Go, an initiative in the framework of Percorsi per le Competenze Trasversali e per l’Orientamento (PCTO) and supported by Piano Lauree Scientifiche (PLS), with the goal of spreading laboratory practice among students and teachers in high schools. Lab2Go was born in Rome and focused on physics, however in just few years it expanded across Italy thanks
to an increasing involvement of INFN and university departments and enlarged its scope to other disciplines (animal biology, botany, chemistry, geology, robotics, scientific museology). Moreover, for preserving the mission of promoting hands-on learning despite the restrictions introduced by COVID-19 pandemic, Lab2Go@Home has been introduced: on-line seminars aimed at showing experiments that can be reproduced at home using easily accessible materials,
using resources such as smartphones apps, web tools and devices as the Arduino board
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