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Beppo Occhialini’s Brazilian period
No full textThe aim of this work is to deepen Occhialini’s Brazilian period. In particular, we want to offer an analysis of the documents kept in Milan and S˜ao Paulo archives, on Occhialini’s activity in Brazil between 1937 and 1942. Occhialini was called in Brazil by Gleb Wataghin in order to found a new physics group focused on the study of cosmic rays. The decision to deal with this topic is due to the geomagnetic location of Brazil that makes it suitable for measurement campaigns of cosmic rays. Moreover, this kind of study can be develop also in a country, like Brazil, that has few economic resource for research. We therefore analyze the research activities carried out by Occhialini in this context, and his contribution to the international conference on cosmic ray held in Rio de Janeiro in 1941. We will also show Occhialini’s activity in helping scientists who lived in European regimes, in particular the role he played in the Houtermans affair
Tokyo charter. Reconnecting with your culture education, culture, heritage, and children
Get PDFThe complexities of contemporary life, the COVID-19 pandemic, racial inequalities, severe economic disparities, and many other factors confirm that it is time to put the PERSON, PEOPLE, and CREATIVITY at the center of our lives and the world at large. Moreover, the fragility of the current situation, which all countries are manifesting in their cultural, educational, and other sectors, reveals that a “new centrality” must be accorded to the role CULTURE can and should play in sustainable development and the world of the future. In fact, without culture, it is difficult to see how shared and participatory policies and practices can be created that are of crucial importance at present and going forward into the future
Analysis of the August 14, 2018 plasma bubble by CSES-01 satellite
No full textEquatorial Plasma Bubbles (EPBs) are plasma density depletions observed in the equatorial ionosphere. The correct understanding of the EPBs dynamics and formation has a key role in the Space Weather context. This work
reports the analysis of a nightside EPB detected in the African sector during a solar quiet period on August 14, 2018. The principal characteristics of the EPB have been identified by the use of the electric field detector, fluxgate magnetometer and Langmuir probe on board CSES-01 (China Seismo Electromagnetic satellite). The results show that a peculiar solar wind structure is likely at the base of the EPB generation
Production of 117mSn in natCd and natIn targets with an α-beam
No full textThe conversion electrons and γ-rays emitter 117mSn is a promising theranostic radionuclide produced mainly at nuclear reactors with low specific activity. The variety of possible applications suggests the necessity of a larger production, more likely reachable at cyclotrons.The irradiation of natCd and natIn targets with the 30 MeV α-beam, available at the Heavy Ion Laboratory (HIL) of Warsaw, aims to measure the production cross-sections of 117mSn and its contaminants. Theoretical calculations are also performed to support the experimental results
Kurtosis of momentum and displacement distributions in biphenyl
No full textWe apply the method of moment expansion, in terms of standard deviation and kurtosis, to the nuclear momentum and displacement distributions of hydrogen in biphenyl. In particular, we present first-principles calculations and
we compare them to deep inelastic neutron scattering experiments, for the nuclear momentum distribution, and to X-ray diffraction, for the displacement distribution, so as to investigate the degree of anisotropy of the single-particle local potential. We find that, in the spirit of the central limit theorem, as a function of the increasing number of vibrations affecting a nucleus, the nuclear displacement distribution becomes more isotropic, as was the case of the nuclear momentum distribution, yet the trend is not monotonic with two local maxima at 125 meV and 20 meV
Minecraft: A means for the teaching and the disclosure of physics
No full textToday, given the actual coronavirus emergency and the increasing use of remote learning, employing new technologies is required to develop alternative and interesting ways to teach physics. Education specialists believe that the use of video games is very useful to educate single or groups of students of different school
levels. In this frame, we assembled a “Physics Park” in which students can learn the theory of experiments and carry them out, even cooperating with each other, by means of Minecraft, a sandbox video game. Here, we present “Galilei’s Acceleration Experiment” with which Galileo Galilei proved the law of falling bodies by using an inclined plane with small bells. Our aim is to develop a teaching method that not only allows and improves the learning of physics, but also makes it more interesting and accessible
Estensione delle valli di Comacchio tra 1000 e 1500 d.C.: geoarcheologia, cartografia storica e informatica
Get PDFThe paper proposes the representation of the evolution of the Comacchio Valleys between the 11th and 16th centuries CE. The bases for this representation are provided by stratigraphic, topographical, cartographic and historical-documentary data; the frame is offered by information technology. The possibility of reconstructing the physical characteristics of a landscape in a diachronic perspective with a certain degree of detail offers valuable insights not only in order to refine our knowledge on the given topic but also in view of the evaluation of the archaeological potential and planning of research
Accurata, ma sostenibile: soluzioni operative per la documentazione grafica e fotografica dello scavo sul sito di Vignale
Get PDFIn the last couple of years, as part of the archaeological project ‘Uomini e Cose a Vignale’ several tests were conducted, focused on fast and effective methods for the graphic and photographic documentation of the archaeological excavation. This paper presents three case studies, which have produced promising results. All of these were conceived and carried on in order to be based on cost-effective and straightforward procedures, which can be further experimented by other research groups. The final outputs are both sufficiently precise and adequate for the online sharing. The first case study focuses on developing an effective pipeline, based on UAV and 3D modeling, and easy enough to allow every member of the excavation team to carry on autonomously the documentation of its excavation area. The second case study has been aimed at 3D modeling of archival data in order to increase their informational potential. The third case study consisted in the elaboration of a high-definition photoplan of a wide (9x3 m) late antique mosaic. The proposed case studies show that the use of sustainable and low-cost procedures and tools leads to the production of graphic and photographic documentation maintaining good quality standards and suitable for communication purposes
Not only paper: Computer Engineering to contrast the eclipse of the audio documents. The case study of a personal archive
Get PDFMusic was one of the earliest kinds of art to explore the creative use of electronic and information technologies: new musical forms have assumed an increasingly artistic importance since the second half of the last century. Technology, at the same time, also is the cause of their rapid deterioration and risk of disappearance. The conservation of this heritage presents very different problems from those posed by traditional artworks. To this purpose this paper first presents some results for the conservation of audio documents: a well-tuned re-mediation methodology, an artificial intelligence based approach to detect audio tape discontinuities and access tools for renovating the listening experience of old analog media. To safeguard this heritage, it is not enough to digitize the content of recordings and documents, but all the related information, collected on the author's personal archive, must also be accessible. The second part of this paper presents in detail, as a case study, the design and development of an information management system allowing the long-time preservation and the access to different documents, among them: audio, letters, musical scores, and manuscripts of the personal archive of an important electronic music composer
Introduction, in Baldoni V. (ed.), From Pottery to Context. Archaeology and Virtual Modelling
Get PDFIntroduction to the section From Pottery To Context. Archaeology and Virtual Modellin