Identification of bridge bending frequencies through drive-by monitoring compensating vehicle pitch detrimental effect

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.

CASE REPORT : Dermatobia hominis: Small Migrants Hidden in Your Skin

( Lorenzo Zammarchi ),( Riccardo Viligiardi ),( Marianne Strohmeyer ),( Alessandro Bartoloni ) 대한피부과학회 2014 Annals of Dermatology Vol.26 No.5

Myiasis is a parasitic infestation of vertebrate animal tissues due to maggots of two-winged flies (Diptera) that feed on living or necrotic tissue. Dermatobia hominis occurs widely in tropical parts of Latin America; it is the most common cause of furuncular myiasis in this region. The continuous increase in international travel has increased the possibility of observing this pathology outside endemic countries, especially in travelers returning from the tropics. If clinicians are aware of the possibility of the disease and its treatment options, this dermatosis can be easily managed. However, diagnostic delay is very common because the disease is often misdiagnosed as a bacterial skin infection. Here, we report 2 cases of furuncular myiasis caused by D. hominis in travelers returning to Italy from Latin America. Surgical and noninvasive treatment approaches are also described. (Ann Dermatol 26(5) 632∼635, 2014)

Ultrastructural immunolocalization of beta-defensin-27 in granulocytes of the dermis and wound epidermis of lizard suggests they contribute to the anti-microbial skin barrier

Lorenzo Alibardi 대한해부학회 2013 Anatomy & Cell Biology Vol.46 No.4

The high resistance to infections in lizard wounds suggests that these reptiles possess effective antimicrobial peptides in their tissues. The present immunocytochemical study shows the cellular localization of beta-defensin 27 in tail tissues and in the blood, a defensin previously identified in the lizard Anolis carolinensis through biomolecular methods. Beta-defensin-27 immunoreactivity is only observed in some large granules mainly contained in heterophilic granulocytes that are sparse within the dermis of the skin or in the isolated blood. This peptide is absent in other cell types of the skin, in keratinocytes and in subdermal muscle tissue of the tail in normal conditions. Pre-corneous keratinocytes of the regenerating tail epidermis are unlabeled or show a weak labeling for the peptide only in sparse cytoplasmic areas or in the extracellular spaces among corneocytes of the wound and regenerating epidermis. The study suggests that beta-defensin 27 is normally stored in granulocytes present in the blood or in connective tissues while in the epidermis keratinocytes do not show the presence of this peptide unless these cells are stimulated from injury to produce and likely release beta-defensins.

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.

Immunomodulatory Effects of Lactobacillus salivarius LS01 and Bifidobacterium breve BR03, Alone and in Combination, on Peripheral Blood Mononuclear Cells of Allergic Asthmatics

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.

Flap failure and aircraft controllability: Developments in asymmetry monitoring techniques

Lorenzo Borello,Giuseppe Villero,Matteo D. L. Dalla Vedova 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.11

The asymmetry limitation between left and right wing flap surfaces is one of the most severe requirements for the design of the actuationand control system. When the position asymmetry exceeds a defined value, it must be detected and limited by appropriate monitoringdevices equipped with a suitable software. In the design of a new flap control system the development of the asymmetry monitoringsubsystem plays a very important role and, together with the flap system layout selection, it was and still is a debated matter in the industry. The currently used monitoring technique is based on differential position detection between left and right surfaces. Their use generallyslightly reduces the asymmetry, but in some cases it may have an unreliable behavior. To overcome the shortcomings of the previousmodels, we propose new and different monitoring strategies and assess their positive effects on the maximum asymmetry following atorque tube failure; in particular, the asymmetry reduction coming from the employment of the proposed techniques in the consideredoperative conditions (typical deployment / retraction flap actuations), with respect to a previous type of technique, can be evaluated in theorder of 30%.

이탈리아의 사회협약과 불평등

Lorenzo Bordogna 한국노동연구원 2006 국제노동브리프 Vol.4 No.3

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.

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.

Commentary on “Efficacy of biofeedback therapy for objective improvement of pelvic function in low anterior resection syndrome (Ann Surg Treat Res 2019;97:194- 201)”

Lorenzo Dioscoridi,Francesco Pugliese,Edoardo Forti,Angelo Italia,Marcello Cintolo,Giulia Bonato,Massimiliano Mutignani 대한외과학회 2020 Annals of Surgical Treatment and Research(ASRT) Vol.99 No.2