showing 36 of ~574560 from 574555 documents
Harmonic generation in all-dielectric metasurfaces
2023
Nonlinear light generation is a key phenomenon in many optical systems. Recently, the field of nonlinear optics has moved to the miniaturization of conventional bulky components. Among all the new platforms that have been proposed, dielectric nanoscale resonators represent excellent candidates for light generation and manipulation. When arranged in periodic arrays, such high refractive index scattering components become an artificial material called metasurface. Several approaches for designing platforms with enhanced optical nonlinearities at moderate pump intensities have been proposed. In this chapter, we review the most recent results on second- and third-order nonlinear processes in hi…
Healthy orthorexia vs. orthorexia nervosa: Italian validation of the Teruel Orthorexia Scale (TOS)
2023
Abstract Purpose Orthorexia nervosa (OrNe) is a potentially pathological condition characterized by a fixation on healthy diet. An increasing number of studies have been conducted on this mental preoccupation, but the validity and reliability of some of the psychometric instruments employed in its assessment are still under debate. Among these measures, the Teruel Orthorexia Scale (TOS) seems to be promising, given that it allows to differentiate between OrNe and other non-problematic forms of interest with healthy eating, named as healthy orthorexia (HeOr). The aim of this study was to examine the psychometric properties of an Italian version of the TOS, by testing its factorial structure,…
After cyclone Aila : politics of climate change in Sundarbans
2023
This article compares the politics of climate change in the Sundarbans region in Bangladesh and India based on ethnographic fieldwork in four villages and among migrants from these villages in Kolkata and Khulna city by focusing on the long aftermath of cyclone Aila. The comparison highlights different policy options and framings of extreme weather events . Ten years after the cyclone, the aftermath of Aila continues in both regions we studied in Bangladesh and India, but partly for different reasons. In our study areas in Bangladesh, the aftermath of Aila reinforced the neglect of coastal livelihoods, whereas, in the communities we studied in India, Aila spurred new investments in the affe…
Hyperoxia in critically ill patients with sepsis and septic shock: a systematic review
2023
Abstract Background In septic patients, hyperoxia may help with its bactericidal effects, but it may cause systemic impairments. The role of hyperoxia and the appropriate oxygen target in these patients is unknown. The aim of this systematic review was to summarize the available literature. Methods We conducted a systematic search screening PubMed and Cochrane Library. Studies on adult patients with sepsis or septic shock and admitted to ICU addressing the topic of hyperoxia were included and described. Results We included 12 studies, for a total of 15.782 included patients. Five studies were randomized controlled trials (RCTs) or analyses from RCTs, three were prospective observational stu…
Constraining fragmentation functions through hadron-photon production at higher-orders
2023
In certain situations, such as one-particle inclusive processes, it is possible to model the hadronization through Fragmentation Functions (FFs), which are universal non-perturbative functions extracted from experimental data through advanced fitting techniques. Constraining the parameters of such fits is crucial to reduce the uncertainties, and provide reliable and accurate FFs. In this article, we explore strategies to relate pion and FFs for other hadrons (in particular, kaons), comparing cross-section ratios imposing proper kinematical cuts. We exploit the phenomenology of photon-hadron production at colliders, including up to NLO QCD and LO QED corrections, and make use of accurate for…
The green granary of the Empire? Insights into olive agroforestry in Sicily (Italy) from the Roman past and the present
2023
Groves with ancient olive trees (Olea europaea L.) could be considered remnants of old agroforestry systems. Anything but static, these agro-ecosystems have undergone drastic transformational processes in Mediterranean countries, where abandonment or intensification have been observed far more than continuity, expansion or renaissance, leading to environmental degradation of rural areas. Starting from this assumption and inspired by historical ecology and historical geography, we consider centuries-old olive trees as living archives of human-nature interactions and are thus proxies of past agroforestry. Our aim is to better understand what has driven dynamics of change and persistence, happ…
Comparison of the Recycling Behavior of a Polypropylene Sample Aged in Air and in Marine Water
2023
During the processing and during their lifetime, polymers are subjected to several environmental stresses—thermomechanical, photo-oxidative, etc.—that can strongly modify their chemical and molecular structure and, consequently, their morphology. Reduction of the molecular weight and formation of double bonds and oxygenated groups are the main changes observed as a consequence of the degradation. As a result of these changes, the macroscopic properties are dramatically modified. These changes can have a relevant effect if the post-consumer plastic manufacts are recycled. In this work, a sample of polypropylene subjected to two different degradation histories—photo-oxidatio…
Self-Cleaning Bending Sensors Based on Semitransparent ZnO Nanostructured Films
2023
The design of multifunctional nanostructured materials is the key to the development of smart wearable devices. For instance, nanostructures endowed with both piezoelectric and photocatalytic activities could well be the workhorse for solar-light-driven self-cleaning wearable sensors. In this work, a simple strategy for the assembly of a flexible, semitransparent piezophotocatalytic system is demonstrated by leveraging rational wet chemistry synthesis of ZnO-based nanosheets/nanoflowers (NSs/NFs) under basic pH conditions onto flexible ITO/PET supports. A KMnO4 pretreatment before the ZnO synthesis (seeded ZnO) allows for the control of the density, size, and orientation of the NSs/NFs syst…
Pedagogía política y drama escolar protestante. El Masaniello de Christian Weise
2023
La revuelta de Nápoles de 1647 encabezada por el pescador Tommaso Aniello (Masaniello) suscitó intensas reacciones en todo el continente europeo. A su vez, la reflexión sobre la política y la razón de Estado adquiría cada vez mayor relevancia a partir de la segunda mitad de siglo XVII. El campo literario no se quedó atrás y algunos intelectuales vieron en estos acontecimientos históricos la oportunidad para expandir sus modelos pedagógicos en los teatros escolares protestantes: el uso de la historia como método de enseñanza de la política, de la retórica y de la religión al mismo tiempo. Uno de estos autores fue Christian Weise (1642-1708) quien, tomando como fuente algunas de las crónicas …
Promoting the Flexibility of Thermal Prosumers Equipped with Heat Pumps to Support Power Grid Management
2023
The increasing share of renewable energy sources in energy systems will lead to unpredictable moments of surplus/deficit in energy production. To address this issue, users with heat pumps can provide support to power grid operators through flexible unit operation achieved via Demand Response programs. For buildings connected to low-temperature heating networks with ensured third-party access, further room for flexibility can be explored by investigating the production of surplus heat that can be sold to the network. A key aspect lies in the identification of the energy pricing options that could encourage such flexible operation of a heat pump by “thermal prosumers”. To this aim…
Masonry Sail Vaults in Maltese Architecture: Geometrical Analysis for the Study of Building Processes
2023
This research concerns the introduction and dissemination of masonry sail vaults in Malta between the sixteenth and the eighteenth centuries. A digital survey is produced to capture a reality-based 3D model, undertake analysis, and compare case studies with the aim of interpreting the sail vaults' construction systems.
We made it to Germany … and now? Interdependent risks of vulnerability for refugees in a high-income country
2023
Refugees are perceived as a category of people that are ‘vulnerable’ per se. However, once they have arrived in (high-income) hosting countries and are supported by a welfare state, vulnerability needs to be rethought, as they face new challenges and potential sources of inequality. In this paper, we have measured vulnerability as the probability of experiencing jointly three interdependent risks: social isolation, financial worries and poor health. For this purpose, we estimated a trivariate logit model to evaluate how individual and household characteristics are associated with vulnerability and also made inferences regarding the residual association between pairs of risks, conditionally …
Evolution of eccentricities induced by geometrical and quantum fluctuations in proton-nucleus collisions
2023
We compute the azimuthal eccentricities arising from initial stage fluctuations in high energy proton-nucleus collisions at proper times $\tau \geq 0^+$. We consider two sources of fluctuations, namely the geometrical structure of the proton and the fluctuation of color fields carried by both proton and nucleus. Describing these effects with Gaussian models allows us to analytically calculate the one- and two-point correlators of energy density, from which the eccentricities are obtained. We compute the proper time evolution of these quantities by approximating the Glasma dynamics in terms of linearized Yang-Mills equations, which we solve by assuming free field propagation and adopting the…
Implementing positive behaviour intervention and support in Finnish early childhood education and care : leadership team’s perspective
2023
The effective implementation of positive behaviour intervention and support (PBIS) requires both organisational and professional change. This means that the whole community including all educators and children commit to shared principles, practices, and structures to create a safe and supportive social climate. In this article, we investigate the initial implementation of the Finnish PBIS ProVaka in eighteen early childhood education and care (ECEC) centres. Our inductive qualitative analysis of longitudinal progress diary data focuses on roles, responsibilities and communication among the ECEC communities. The results show that successful ProVaka development is a matter of successfully exp…
Assessment of the insecticidal activity of five essential oils used against the subterranean termite Reticulitermes lucifugus (Rossi) (Blattodea, Rhi…
2023
Among Reticulitermes genus the most abundant species living in Italy is Reticulitermes lucifugus Rossi. This termite is very dangerous to wooden structures of artistic heritage and buildings. The traditional control of R. lucifugus is very difficult resulting in negatively impact on the environment, therefore the use of phytochemical, such as essential oils (EOs), could lead to an alternative to synthetic insecticides, with advantages in reducing environmental risks. In this work we investigated the insecticidal activity of EOs of Citrus bergamia Risso, Syzygium aromaticum L., Foeniculum vulgare Mill., Pelargonium odoratissimum L., and Origanum vulgare L. by inhalation against R. lucifugus …
YO ES OTRO. DESCARTES Y LA CONFESIÓN FILOSÓFICA
2023
Descartes a menudo es visto como un pensador solitario, una suerte de Robinson Crusoe metafísico. En el origen cartesiano de la filosofía moderna se unirían la actitud teórica más radical y solipsista, con el desinterés por las cuestiones prácticas que tanto habían preocupado a los pensadores que le antecedieron. No obstante, la lectura canónica de Descartes como un teórico puro, desentendido de los otros, e incluso de sí mismo, es problemática. El meditador cartesiano en realidad emerge del diálogo con un interlocutor misterioso que, lo engañe o no, sin duda lo interpela. Más aún, al final de su vida Descartes esbozó una teoría de las pasiones con la admiración, el amor y la generosidad, q…
Analyzing science teachers’ support of dialogic argumentation using teacher roles of questioning and communicative approaches
2023
The purpose of this study is to investigate how teachers use different types of discourse to support dialogic argumentation. Dialogic argumentation is a collaborative process in which students construct arguments together and examine arguments presented by their peers. Science teachers can use argumentation as a vehicle to help students gain a working understanding of science content and the nature of science and its practices. Whole-class closing discussions from video-recorded lessons are analyzed to study the discourse used to support argumentation by two physics teachers in lower secondary schools. Analysis of discourse includes coding of communicative approach at the episode level and …
Host filtering, not competitive exclusion, may be the main driver of arbuscular mycorrhizal fungal community assembly under high phosphorus
2023
A major goal in ecology is understanding the factors which determine the diversity and distribution of organisms. The outcome of the symbiotic relationship between plants and arbuscular mycorrhizal (AM) fungi is strongly influenced by soil phosphorus (P) availability. Despite this knowledge, there is still much to uncover about how soil P status can shape the taxonomic and phylogenetic assembly of root-colonising AM fungi. Additionally, there is a paucity of understanding about the implications of these changes for the outcome of the AM symbiosis in terms of plant growth, nutrient status and defence traits. We conducted a factorial pot experiment where sorghum (Sorghum bicolor) was grown un…
Floquet band engineering in action
2023
Floquet engineering consists in the modification of physical systems by the application of periodic time-dependent perturbations. The search for the shape of the periodic perturbation that best modifies the properties of a system in order to achieve some predefined metastable target behavior can be formulated as an optimal control problem. We discuss several ways to formulate and solve this problem. We present, as examples, some applications in the context of material science, although the methods discussed here are valid for any quantum system (from molecules and nanostructures to extended periodic and non periodic quantum materials). In particular, we show how one can achieve the manipula…
Reduced graphene oxide/silver nanoparticles/β-cyclodextrin nanosponges composites with improved photocatalytic activity
2023
Significant activity improvement was achieved by associating graphene oxide-silver composite photocatalysts with cyclodextrin-based nanosponge materials, due to the synergistic effect provided by the supramolecular host abilities of the nanosponge. Three photocatalysts were prepared, fully characterized (FT-IR, ss-NMR, Raman, XRD, SEM, EDX, AFM, ICP, TGA, potentiometric titration), and tested for the oxidative photodegradation of some dyes and phenols, chosen as model organic pollutants. Compared to the unsupported photocatalyst, the nanosponge-based materials showed enhanced performances (being able to carry out the degradation even of dyes which do not react in the presence of the unsuppo…
I caratteri dell'architettura resiliente adattiva. Invarianti compositive del progetto: 1990-2020
2023
La Tesi di Dottorato “I caratteri dell’architettura resiliente adattiva. Invarianti compositive del progetto: 1990-2020” si propone di affrontare il rapporto fra l’architettura resiliente adattiva e le invarianti compositive del progetto attraverso l’influenza che tale rapporto ha sull’evoluzione e l’innovazione dei caratteri dell’architettura. In un momento storico in cui termini come resilienza e innovazione ricoprono un ruolo cruciale nell’esplorazione delle potenzialità della ricerca e costituiscono un requisito indispensabile per la programmazione del prossimo futuro, si è ritenuto opportuno ricondurre l’attenzione della ricerca dottorale al cuore della disciplina del progetto di archi…
High-density SNP markers elucidate the genetic divergence and population structure of Noticiana sheep breed in the Mediterranean context
2023
Among livestock species, sheep have played an early major role in the Mediterranean area. Italy has a long history of sheep breeding and, despite a dramatic contraction in numbers, still raise several local populations that may represent a unique source of genetic diversity. The Noticiana is a breed of the south-eastern part of Sicily appreciated both for its dairy products and for its resistance to harsh environment. In this study, the high-density Illumina Ovine SNP600K BeadChip array was used for the first genome-wide characterization of 48 individuals of Noticiana sheep to investigate its diversity, the genome structure and the relationship within the context of worldwide and Italian br…
Intra- and Juxta-Articular Osteoid Osteoma Mimicking Arthritis: Case Series and Literature Review
2023
Background: Intra- and juxta-articular osteoid osteomas are rare, representing less than 10% of all osteomas. Compared to the classic diaphyseal or metaphyseal site of long bones, they often have an atypical onset, a longest diagnostic delay, and frequent initial misdiagnoses, with pictures that can mimic inflammatory monoarthritis. We aimed to describe a case series, and to provide a literature review of this uncommon and misleading tumor location. Methods: We performed a retrospective analysis of patients referred to three pediatric rheumatology centers, with a final diagnosis of articular osteoid osteoma. A review of the literature was additionally conducted. Results: We included 10 pati…
Experimental evolution of evolutionary potential in fluctuating environments
2023
Variation is the raw material for evolution. Evolutionary potential is determined by the amount of genetic variation, but evolution can also alter the visibility of genetic variation to natural selection. Fluctuating environments are suggested to maintain genetic variation but they can also affect environmental variance, and thus, the visibility of genetic variation to natural selection. However, experimental studies testing these ideas are relatively scarce. In order to determine differences in evolutionary potential we quantified variance attributable to population, genotype and environment for populations of the bacterium Serratia marcescens. These populations had been experimentally evo…
School achievement in adolescence and the risk of mental disorders in early adulthood: a Finnish nationwide register study
2023
AbstractSchool grades in adolescence have been linked to later psychiatric outcomes, but large-scale nationwide studies across the spectrum of mental disorders are scarce. In the present study, we examined the risk of a wide array of mental disorders in adulthood, as well as the risk of comorbidity, associated with school achievement in adolescence. We used population-based cohort data comprising all individuals born in Finland over the period 1980–2000 (N = 1,070,880) who were followed from age 15 or 16 until a diagnosis of mental disorder, emigration, death, or December 2017, whichever came first. Final grade average from comprehensive school was the exposure, and the first diagnosed ment…
Covariate-informed latent interaction models: Addressing geographic & taxonomic bias in predicting bird-plant interactions
2023
Reductions in natural habitats urge that we better understand species' interconnection and how biological communities respond to environmental changes. However, ecological studies of species' interactions are limited by their geographic and taxonomic focus which can distort our understanding of interaction dynamics. We focus on bird-plant interactions that refer to situations of potential fruit consumption and seed dispersal. We develop an approach for predicting species' interactions that accounts for errors in the recorded interaction networks, addresses the geographic and taxonomic biases of existing studies, is based on latent factors to increase flexibility and borrow information acros…
Exploration of muscle–tendon biomechanics one year after Achilles tendon rupture and the compensatory role of flexor hallucis longus
2023
Achilles tendon (AT) rupture leads to long-term structural and functional impairments. Currently, the predictors of good recovery after rupture are poorly known. Thus, we aimed to explore the interconnections between structural, mechanical, and neuromuscular parameters and their associations with factors that could explain good recovery in patients with non-surgically treated AT rupture. A total of 35 patients with unilateral rupture (6 females) participated in this study. Muscle-tendon structural, mechanical, and neuromuscular parameters were measured 1-year after rupture. Interconnections between the inter-limb differences (Δ) were explored using partial correlations, followed by multivar…
GLI ANTROPOLOGI SOCIOCULTURALI E LA “SOSTENIBILITÀ”. ALCUNE PROSPETTIVE
2023
The chapter proposes a critical discussion of the notions of sustainability and sustainable development. It should be noted that the global and national policies of "sustainable development" implemented in the last thirty years have failed to stop the worsening of the planetary crisis and of climate change of anthropogenic origin at the planetary level. We then go over some of the main lines of reflection and analysis on these issues within socio-cultural anthropology
La lingua della canzone italiana
2023
The volume offers a descrption of the main linguistic aspects of the Italian popular song. In the first chapter a brief reconstruction of the history of Italian popular song is showed. The second chapter focuses on the relations between tradition and innovation in the Italian popular song. In particular, authors underline the role of intertextuality in the development of the Italian popular song. The third chapter is devoted to investigate the synchronnic variability (both spatial and social) within the Italian popular song. The final chapter shows the role of the Italian dialects in the historical development of the Italian popular song
Palermo si cura. Pratiche culturali di mutuo soccorso come risposta alle fragilità della città (post)pandemica
2023
In un quadro di riferimento in cui la crisi è globalizzata ma diseguale e in mancanza di un sistema di welfare capace di rispondere alle urgenze dei contesti e dei gruppi sociali più marginalizzati, una risposta ai nuovi bisogni sociali ed individuali è stata offerta da reti solidali e da pratiche di mobilitazione dal basso che svolgono un ruolo di agency territoriale, spesso indipendentemente o in assenza di Istituzioni. Nel contesto palermitano un impegno agito da una pluralità di soggetti culturali già attivi sul territorio, riuniti in un’assemblea pubblica (Palermo si cura), durante il periodo del primo lockdown hanno dato vita ad azioni di mutuo soccorso per rispondere all’emergenza ec…
Migrations of decolonization, welfare, and the unevenness of citizenship in the UK, France, and Portugal
2023
Abstract Among its many global impacts, decolonization triggered the migration of several million ‘repatriates’ — white settlers or others associated with the imperial power — who left Asia and Africa and ‘returned’ to their European ‘motherlands’. This article explores the arrival of several thousand Anglo-Egyptians into Britain in 1957 following the Suez crisis, the one million pieds-noirs who left Algeria for France in 1962, and the 500,000 retornados who entered Portugal amidst the 1975 Carnation Revolution. Offering an integrated comparison of these three key moments of decolonization via the migrations they triggered, it underscores the importance of citizenship, understood here as bo…
Literacy skills seem to fuel literacy enjoyment, rather than vice versa
2023
Children who like to read and write tend to be better at it. This association is typically interpreted as enjoyment impacting engagement in literacy activities, which boosts literacy skills. We fitted direction-of-causation models to partial data of 3690 Finnish twins aged 12. Literacy skills were rated by the twins' teachers and literacy enjoyment by the twins themselves. A bivariate twin model showed substantial genetic influences on literacy skills (70%) and literacy enjoyment (35%). In both skills and enjoyment, shared-environmental influences explained about 20% in each. The best-fitting direction-of-causation model showed that skills impacted enjoyment, while the influence in the othe…
The Genesis of the Italian School of Algebraic Geometry Through the Correspondence Between Luigi Cremona and Some of His Students
2023
Luigi Cremona is considered the founder of the Italian school of algebraic geometry. He formed a group of students of great value, very active in scientific research. Examining the letters from Eugenio Bertini, Ettore Caporali, and Riccardo De Paolis to Cremona preserved in the archive of the Istituto Mazziniano in Genoa, we have reconstructed their biographies, careers, studies, and relationships with their teacher. They had the merit of cultivating the scientific innovations of the period and passing them on to the subsequent generations.
Energie rinnovabili e trasformazioni territoriali: il caso del fotovoltaico in Sicilia
2023
This paper intends to deal with the issue of territorial transformations that have taken place in the last two decades in Sicily, after the construction of hundreds of small, medium and large photovoltaic plants. These plants were built often causing profound landscape changes.
Il patrimonio collettivo dei centri storici siciliani tra norme inadeguate e nuove opportunità di rigenerazione
2023
Nel 2015 la Regione Siciliana esitava la L.r. 13/2015 “Norme per favorire il recupero del patrimonio edilizio di base dei centri storici”, un provvedimento legislativo molto contestato in ambito accademico che, di fatto, costituisce un grave arretramento culturale e tecnico non tenendo in alcun conto gli avanzamenti metodologici sul tema dei centri storici a partire dalla Carta di Gubbio del 1960. La L.r. 13 ha avuto un’applicazione sinora abbastanza limitata rispetto a quello che la sua attrattività avrebbe fatto immaginare, infatti, solo poche decine di comuni hanno proceduto alla definizione dello “Studio con effetti costitutivi” del centro storico, e pochi ne hanno concluso l’iter di ap…
Il limite di età nel concorso per commissario di polizia al vaglio della Corte di Giustizia
2023
Il saggio esamina gli orientamenti della Corte di Giustizia in materia di limite di età per l'accesso alle pubblica amministrazioni