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Page 40 of 955 Results 391 - 400 of 9546

Hamed Dabiri, Jessica Clementi, Roberta Marini, Paolo Mazzanti, Gabriele Scarascia Mugnozza, Francesca Bozzano, Dan Bompa
Finite Element analysis of Vittoriano building based on InSAR data

This paper discuses a novel methodology for evaluating buildings performance through advanced Finite Element Analysis (FEA) based on the data given by Interferometric Synthetic Aperture Radar (InSAR). A cracked wall of Vittoriano building, Rome, Italy is chosen as the case study. A detailed 3D numerical model of the wall was developed in ABAQUS. Concrete Damage Plasticity (CDP) model was utilized for defining the masonry material based on the macro-modeling approach. The ground deformation acquired by InSAR is applied to the wall s base. The crack propagation and stress concentration of the numerical model was in line with the real cracks observed on the wall. The results highlighted the high reliability of the InSAR data which could be used in structural behavior assessment.

Alberto Caroti
Perceiving Ancient Landscape in Digital Simulation. Preliminary Consideration on the Case of the Missing Auser River in Pisa (Tuscany, IT)

Reconstruction of archaeological landscapes is known to be a valuable tool for analysing and interpreting the historical landscape. The present project seeks to provide a replicable, low- cost method for simulating any archaeological context and its surroundings with the aim of creating, in a collaborative digital environment, the possible perception of the ancient river landscape, functional to the study of the interaction between river and users and to understanding how much the Auser river itself may have played an agency in shaping the inhabitants identities. The paper presents some preliminary considerations on the method, the expected results of the ongoing research project and some challenges.

Martina Trocchi, Luciano Fattore, Flavio Cognigni, Federico Cappella, Marco Rossi, Giorgio Manzi, Lorenzo Nigro
XRM imaging for non-destructive age at death estimation of the incinerated teeth from the Motya Tophet

The study of odontoskeletal remains of non-adult individuals provides important information on the cultural significance of childhood in past societies. Tophets, distinct burial areas for infant cremated remains found in several Phoenician-Punic colonies in the Mediterranean area, offer an ideal case study to test the potential of alternative analysis approaches on cremated remains. The study presents a non-destructive methodology using X-ray microscopy (XRM) to analyze a sample of cremated deciduous teeth from the Tophet of Motya, providing information on the demographic profile and age classes of the buried individuals. The results are consistent with previous studies on Tophets remains and highlight the importance of using non-invasive analytical techniques to collect new data useful for the interpretation of the burial practices of newborns and infants in Phoenician world.

Diego Sinitò, Giulio Setzu, Alessandro Verderame, Antonio Ruoto, Vito Santarcangelo
Realverso Lucanum: a metaverse for innovative didactic and digital tourism

This paper aims to explain how the idea of Realverso Lucanum was born, what technical basis was used to develop it, and what motivations have been moving the team of iInformatica in the last year to realize this project. The potential offered by Realverso includes the tourist enhancement of attractions in the Lucanian territory, thanks to the signing of agreements with ten municipalities in the Basilicata region and the engagement with reproductions of real-world places, allowing users to be aware of historical and cultural facts. Moreover, Realverso is a metaverse with a vocation to sustainability. This is because within it, the dynamics of environmental protection and education for sustainable behavior are re-proposed, and they can be traced back to many of the UN 2030 Agenda points.

Saverio Giulio Malatesta, Laura Leopardi, Marco Raoul Marini, Paolo Rosati
ArcheoVerso: a cultural metaverse for enhancement, technologies, communities, services

In December 2022, DigiLab of Sapienza University, Rome, partnered with Società Cooperativa Culture to potentially develop a metaverse prototype, ArcheoVerso, dedicated to cultural heritage. ArcheoVerso aims to leverage digital universes to enhance both tangible and intangible Cultural Heritage, creating an ecosystem for best practices in immersive and augmented reality and economically sustainable metaverse solutions. With an estimated market value of $758.60 billion by 2026, a significant subscription rate for Meta, and hefty investments by leading companies in engaging systems, the metaverse presents an immense opportunity. Like social media, it serves as an excellent communication and enhancement tool for cultural heritage, driving unprecedented public involvement and economic impact. Platforms like Facebook, WhatsApp, Instagram are merging digital and physical reality, reflecting philosopher Luciano Floridi s concept of onlife in a phygital world. This transformation is evident in recent cultural studies.

N. Hamamed, N. Yaakoubi, C. Mechri, R. El. Guerjouma, H. Hentati, S. Bouaziz, M. Hadda
Acoustic detection of flow variation and leakage in water distribution pipes

Water is a vital resource that is becoming increasingly scarce due to global warming, pollution and leaks in pipes, especially in urban areas. Finding non-intrusive methods to detect water flow variation and leakage is therefore essential to reduce losses in urban distribution networks that can have a significant economic impact. In this work, we have explored an acoustic method to detect the vibrations of water flows for metallic pipes. So, two piezoelectric sensors were used, the first one is made of a Lead Zirconate Titanate Ceramic (PZT) and the second one is a Polyvinylidene fluoride polymer (PVDF) to control and monitor the dynamic behavior of metallic water pipes at different flow rates.

H. E. El Yamine Sakhraoui, N. Maouche, S. Khaoulani, G. Attia, C. Zerrouki, N. Fourati
Design of an electrochemical polypyrrole-imprinted polymer for bisphenol A detection in aqueous media

This study concerns the design of an electrochemical sensor functionalized with a polypyrrole-molecularly imprinted polymer (PPy- MIP) for bisphenol A (BPA) detection. Here, N, N'- methylene-bis-acrylamide was chosen as the chelating agent due to its accessible carbonyl and amine groups. Extraction of BPA templates from the vicinity of the PPy-polymeric matrix was optimized by electrochemistry and Fourier Transform Infrared spectroscopy (FTIR). The limit of detection of the designed sensor was of order of 1 nM and the sensitivity was equal to (9.66 ± 0.86) µA/M respectively. The dissociation constant Kd, which provides information on the affinity between the templates and the cavities, was estimated from a combined one-site binding - Hill model. Kd was of order of (2.05 ± 0.18) 10-9 M.

A. A. Al-Hamry, B. H. Pan, C. T. Lu, D. O.Kanoun
Methanol detection by a mwcnt/pedot:pss nanocomposite sensor

In this paper, the sensing properties of multi-walled carbon nanotubes (MWCNT) and conductive polymer mixture poly(3,4- ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) nanocomposites towards methanol vapor were measured at room temperature. The proposed MWCNT/PEDOT:PSS sensors were fabricated by coating different volumes of the dispersions on the polyethylene terephthalate (PET) flexible substrate to produce different film thicknesses. The substrate was already coated with screen-printed silver interdigitated electrodes. Compared with MWCNT films, the proposed composite films significantly showed a higher response toward methanol vapor. The thinnest film with only 5 µL drop casted dispersion has shown the best response, 27.62 % change in resistance at 70 ppm.

M. Talbi, A. Al-Hamry, T. Lu, M. Ben Ali, O. Kanoun
Investigation of electrochemical detection of nitrite and nitrate in water for environmental application

This paper is about electrochemical investigations of nitrite (NO2-) and nitrate (NO3-) detection in water. Herein, a study based on functionalization of carbon screen-printed electrodes (CSPE) with chitosan and tetrasulfonated copper (II) phthalocyanine nanocomposite (Chit/Ts-CuPc). Cyclic voltammetry (CV) surveys were carried out with ferri/ferrocyanide probe and analytes for preliminary investigations to confirm the efficacity of the electrode’s functionalization. Differential pulse voltammetry (DPV) measurements then were performed for more precise and sensitive detection with different analytes concentrations. Further studies regarding pH optimization, electrodes kinetics and calibration curve will be performed to calculate the sensor’s figures of merits. As well as a real sample test is to be done to prove that the developed sensors are very promising for effective nitrite and nitrate detection.

A. Jbari, L. Bellarbi, N. Yaakoubi, A. Errachid
Overview of QCM for pollution monitoring systems

Global industrialization and urbanization have increased significantly the concentration of fine particles in the atmosphere. Various methods have been and are being developed for the measurement of fine particles. This paper explored the use of a quartz crystal microbalance (QCM) to measure the mass concentration of combustion particle suspensions and its contribution to air pollution monitoring techniques.

Page 40 of 955 Results 391 - 400 of 9546