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Correction: Health profiles of foreign-born elderly women with HIV in Italy (Frontiers in Aging, (2025), 6, (1659751), 10.3389/fragi.2025.1659751)
No full textFracture mechanics of thermoplastic elastomers: applicability of the load separation criterion
Get PDFInitially proposed for metals and then extended to polymeric materials, the Load Separation Criterion, LSC, is the theoretical basis of several laboratory test methods for the fracture characterisation of materials exhibiting plasticity. In this work, the applicability of the LSC to the fracture characterisation of thermoplastic elastomers, TPEs, was analysed and discussed for the first time. Due to their peculiar nature, TPEs combine melt state processability with a high compliance and elasticity typical of rubbers. At a macroscopic scale, their mechanical response appears generally complex, with an evident viscoelastic character coupled with clear signs of plasticity (behaviour often referred to as of the elastoviscoplastic type). Three industrially relevant TPEs, differing for the chemical nature, were examined. First, their stress-strain behaviour was studied by uniaxial tensile tests, carried out on dumbbell specimens. Then, to verify the load separability, single-edge notched in tension, SENT, tests were carried out on blunt-notched specimens (stationary crack tests under plane stress conditions). Specimens with different crack-length/width ratios were tested at room temperature and with a fixed crosshead speed (low rate). The LSC proved to be valid for all three TPEs studied
Syncopal Recurrence in Patients Treated With Dual Chamber Pacemaker for Reflex Syncope With Asystole
No full textI Martinengo. Un casato tra Brescia, Bergamo e l'Europa (secc. XV-XIX)
No full textIl volume raccoglie interventi di studiose e studiose afferenti ad ambiti disciplinari diversi e intende indagate approfonditamente e con taglio innovativo le vicende della famiglia Martinengo e dei suoi diversi rami tra Brescia, Bergamo e l'Europa (secc. XV-XIX)
A methodological framework for assessing pollinator suitability in urban areas
Get PDFInterest in the suitability of urban areas for pollinators is steadily increasing, as pollinator decline and biodiversity lossare closely linked to human activities, particularly urbanization and land-use change. Although recent studies have begunexploring urban pollinator habitats, these areas are often considered inhospitable when assessed with coarse-scale assess-ment tools, which risk overlooking mosaics of green patches that provide essential foraging and nesting resources. Theconfiguration and density of these green spaces vary widely, strongly influencing their potential to support pollinators.However, standardized methods for evaluating pollinator-friendly urban areas remain limited. This study presents a meth-odological tool for urban planning, the Green Patch Suitability Assessment, which enables comparative evaluation ofurban patches at fine spatial resolution. The framework combines (i) a classification system of urban green areas (patches);(ii) a multidimensional index of patch-level pollinator suitability, and (iii) a high-resolution topographic database integrat-ing patch from multiple commonly used urban and landscape planning datasets. Applied in a municipality in NorthernItaly, the tool demonstrates the capacity to identify small green patches often overlooked in coarser datasets and to evalu-ate the potential effects of a newly approved municipal plan aimed at enhancing green areas and biodiversity. Scenarioanalysis confirmed that the framework is sufficiently sensitive to detect the effects of the nature-based solutions proposedin the city plan, thus providing a practical and operational tool for urban planning capable of assessing the contributionof small green patches that would otherwise remain unrecognized using coarser-resolution databases
The Census of Rural Architecture in Italy: a Replicable Model for the Cataloguing
Get PDFThe Italian landscape is enriched by rural architecture, which is a fundamental element and a valuable
cultural asset. Despite increasing interest, research in this field struggles to establish itself as an
autonomous discipline. This paper proposes a methodological model that can be replicated for the
census and cataloging of rural architecture, emphasizing its historical, cultural, and environmental
significance. The aim is to provide a systematic framework for analyzing and preserving these structures
by integrating historical, typological, and territorial data into a coherent system of knowledge and
valorization. Since the early 20th century, the study of architecture has expanded to include vernacular
buildings alongside monumental ones. Scholars such as Giuseppe Pagano, Bernard Rudofsky, and
Amos Rapoport emphasized the significance of spontaneous rural constructions in shaping sustainable
and context-driven architectural practices. Today, rural architecture is increasingly recognized for its
role in landscape conservation and sustainable development. The Italian Ministry of Culture and PNRR
have promoted the National Rural Architecture Census, which aims to identify and document various
types of rural buildings across Italy. The goal is to compile around 50,000 cataloging forms, divided
into eight regional lots, with the help of the Central Institute for Cataloging and Documentation
(ICCD). The AR (Rural Architecture) form provides a systematic classification of buildings constructed
up to 1940, gathering essential data on architectural typology, construction techniques, materials, and
conservation status. By completing this census, we can safeguard rural architecture and create a model
for cataloging vernacular heritage that can be replicated. The project's aim is to combine historical
research with innovative tools to foster interdisciplinary approaches that support the conservation and
sustainable reuse of rural structures, guaranteeing their transmission to future generations
Synthesis and Characterization of (R)- and (S)-1,1′-Bi-2-Naphtholato Coordinated Gallium(III) Porphyrins and Their Chiroptical Properties
Get PDFIn the course of research aimed at reproducing the functions of naturally occurring porphyrins, ongoing efforts have been directed toward introducing chirality—characteristic of many natural products—in order to mimic biological functions. Traditionally, chiral centers have been incorporated into the porphyrin framework through multistep, synthetically demanding procedures involving covalent bond formation. A more straightforward approach is proposed that utilizes a stable metal coordination bond, which was previously developed, to introduce a chiral source in a single step via axial ligation. Specifically, a novel compound is synthesized by coordinating 1,1′-bi-2-naphtholato (BINOL)—an easily accessible molecule with broad applications in asymmetric catalysis and chiroptical chemistry—to gallium porphyrin. As expected, the resulting complex exhibited high stability, with the molecular ion peak confirmed by atmospheric-pressure chemical ionization mass spectrometry. Furthermore, the structure of the compound is thoroughly characterized by single-crystal X-ray diffraction and various nuclear magnetic resonance techniques. Its chiroptical properties are also investigated using electronic circular dichroism and vibrational circular dichroism spectroscopy. This study is expected to serve as a foundation for future developments in chiroptical chemistry and asymmetric catalysis involving chiral porphyrins
Optimizing the Ground-State Energy of a Robin Laplacian: Asymptotic Behavior
No full textIn this paper we consider achieving the largest principle eigenvalue of a Robin Laplacian on a bounded domain Ω by optimizing the Robin parameter function under an integral constraint. The main novelty of our approach lies in establishing a close relation between the problem under consideration and the asymptotic behavior of the Dirichlet heat content of Ω. By using this relation, we deduce a two-term asymptotic expansion of the principle eigenvalue and discuss several applications
Ionic Liquid-Assisted Synthesis of Fe-Ru Catalysts for Olefin Production
No full textThis study demonstrates the enhanced synergy between Fe and Ru nanoparticles (NPs) in Fe-Ru bimetallic catalysts synthesized using an ionic liquid (IL) method, which outperforms traditional colloidal synthesis in producing short-chain hydrocarbons. This innovative synthesis approach improves CO2 conversion efficiency, creating pathways for sustainable applications such as the production of carbon-neutral e-fuels and the use of CO2 as a renewable carbon source