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Lorenzo Benedetti,Lorenzo Bernardini,Antonio Argentino,Gabriele Cazzulani,Claudio Somaschini,Marco Belloli Techno-Press 2022 Structural monitoring and maintenance Vol.9 No.4
Bridge structural health monitoring with the aim of continuously assessing structural safety and reliability represents a topic of major importance for worldwide infrastructure managers. In the last two decades, due to their potential economic and operational advantages, drive-by approaches experienced growing consideration from researcher and engineers. This work addresses two technical topics regarding indirect frequency estimation methods: bridge and vehicle dynamics overlapping, and bridge expansion joints impact. The experimental campaign was conducted on a mixed multi-span bridge located in Lombardy using a Ford Galaxy instrumented with a mesh of wireless accelerometers. The onboard time series were acquired for a number of 10 passages over the bridge,performed at a travelling speed of 30 km/h, with no limitations imposed to traffic. Exploiting an ad-hoc sensors positioning, pitch vehicle motion was compensated, allowing to estimate the first two bridge bending frequencies from PSD functions; moreover, the herein adopted approach proved to be insensitive to joints disturbance. Conclusively, a sensitivity study has been conducted to trace the relationship between estimation accuracy and number of trips considered in the analysis. Promising results were found, pointing out a clear positive correlation especially for the first bending frequency.
Early Wound Healing Score: a system to evaluate the early healing of periodontal soft tissue wounds
Lorenzo Marini,Mariana Andrea Rojas,Philipp Sahrmann,Rustam Aghazada,Andrea Pilloni 대한치주과학회 2018 Journal of Periodontal & Implant Science Vol.48 No.5
Purpose: Numerous indices have been proposed to analyse wound healing in oral soft tissues, but each has specific shortcomings. A new method of analysis, the Early Wound Healing Score (EHS), was evaluated in the present study. The aim was to assess more accurately early healing by primary intention of surgical incisions in periodontal soft tissues. Methods: Twenty-one patients were treated with different surgical procedures comprising 1 or 2 vertical releasing incisions as part of a surgical access flap. Twenty-four hours after surgery, early wound healing at the vertical releasing incisions was assessed using the EHS. This score assessed clinical signs of re-epithelialization (CSR), clinical signs of haemostasis (CSH), and clinical signs of inflammation (CSI). Since complete wound epithelialization was the main outcome, the CSR score was weighted to be 60% of the total final score. Accordingly, a score of 0, 3, or 6 points was possible for the assessment of CSR, whereas scores of 0, 1, or 2 points were possible for CSH and CSI. Higher values indicated better healing. Accordingly, the score for ideal early wound healing was 10. Results: Thirty vertical releasing incisions were assessed in 21 patients. At 24 hours after incision, 16 vertical releasing incisions (53.33%) received the maximum score of CSR, while 6 cases (20%) received an EHS of 10. None of the cases received 0 points. Conclusion: The EHS system may be a useful tool for assessing early wound healing in periodontal soft tissue by primary intention after surgery.
From Media to Transmedia: Transforming Teaching and Learning Strategies in a Digital Culture
Lorenzo Galés, Neus 영상영어교육학회 2019 영상영어교육 (STEM journal) Vol.20 No.4
During the last century, education through media has evolved and generalized both in formal and informal learning contexts. Using films in the classroom helped minimize the differences between academic studies, guided education, and self-access (learner’s autonomous access to content). Today, teaching through media implies using new technologies such as mobile apps, video games, autonomous learning platforms or social media in the classroom. Educators will find new challenges and opportunities if they manage this transmedia universe in their professional development. Transmedia activities are connected to developing multi-literacies in a collective digital culture, active citizenship in a sustainable world, and ethical awareness for community building. Traditional individual language-learning skills (speaking, reading, listening, writing) are usually seen as the basics of communication, but academic research shows that transliteracy, inter-comprehension and plurilingual skills are needed for cultural awareness, social interaction and global communicative competence (including abilities such as debating, mediating, coaching, coding and decoding). Evolving from educational media to transmedia requires changing teaching attitudes and adopting specific approaches, techniques and tools to generate much more interactive activity, integrated tasks and integrative projects. In this communicational ecosystem, researchers explore new tools and strategies to illustrate learning processes, teachers discover different approaches methodologies, and students learn to participate in their own learning process.
Lorenzo Madrazo,Claire B. Lee,Meghan McConnell,Karima Khamisa,Debra Pugh 한국보건의료인국가시험원 2019 보건의료교육평가 Vol.16 No.-
Student-led peer-assisted mock objective structured clinical examinations (MOSCEs) have been used in various settings to help students prepare for subsequent higher-stakes, faculty-run OSCEs. MOSCE participants generally valued feedback from peers and reported benefits to learning. Our study investigated whether participation in a peer-assisted MOSCE affected subsequent OSCE performance. To determine whether mean OSCE scores differed depending on whether medical students participated in the MOSCE, we conducted a between-subjects analysis of variance, with cohort (2016 vs. 2017) and MOSCE participation (MOSCE vs. no MOSCE) as independent variables and the mean OSCE score as the dependent variable. Participation in the MOSCE had no influence on mean OSCE scores (P=0.19). There was a significant correlation between mean MOSCE scores and mean OSCE scores (Pearson r=0.52, P<0.001). Although previous studies described self-reported benefits from participation in student-led MOSCEs, it was not associated with objective benefits in this study.
Lorenzo Drago,Elena De Vecchi,Arianna Gabrieli,Roberta De Grandi,Marco Toscano 대한천식알레르기학회 2015 Allergy, Asthma & Immunology Research Vol.7 No.4
The aim of this study was to evaluate probiotic characteristics of Lactobacillus salivarius LS01 and Bifidobacterium breve BR03 alone and in combination and their immunomodulatory activity in asthmatic subjects. Subjects affected by allergic asthma were recruited. Initially, LS01 and BR03 were analyzed for their growth compatibility by a broth compatibility assay. To study the antimicrobial activity of probiotic strains, an agar diffusion assay was performed. Finally, cytokine production by peripheral blood mononuclear cells (PBMCs) stimulated with LS01 and BR03 was determined by means of specific quantitative enzyme-linked immunosorbent assay (ELISA). The growth of some clinical pathogens were slightly inhibited by LS01 and LS01-BR03 co-culture supernatant not neutralized to pH 6.5, while only the growth of E. coli and S. aureus was inhibited by the supernatant of LS01 and LS01-BR03 neutralized to pH 6.5. Furthermore, LS01 and BR03 combination was able to decrease the secretion of proinflammatory cytokines by PBMCs, leading to an intense increase in IL-10 production. L. salivarius LS01 and B. breve BR03 showed promising probiotic properties and beneficial immunomodulatory activity that are increased when the 2 strains are used in combination in the same formulation.
The Correlation between the Peak Photon Energy and the Radiated Energy in Gamma-Ray Bursts
Lorenzo Amati 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.5
The correlation between the photon energy at which the redshift-corrected νFν spectrum peaks (hereafter called “peak energy”, Ep,i) and the isotropic equivalent radiated energy (Eiso) is one of the most intriguing and debated peaces of observational evidence in Gamma-Ray Burst (GRB)astrophysics. I present the updated Ep,i – Eiso correlation and discuss its main implications for the physics and the geometry of the GRB emission, with particular emphasis on the properties of Swift GRBs and the location in the Ep,i – Eiso plane of sub-energetic long GRBs, GRB/SN events, short GRBs and the recently discovered sub-class of long GRBs without association with a hypernova.