122,364 research outputs found
I primi passi del l'Italia in Africa
No full textMacaluso-Aleo G. I primi passi del l'Italia in Africa. In: Revue d'histoire des colonies, tome 20, n°88, Juillet-août 1932. pp. 289-368
EFFETTI DINAMICI DELL'INNALZAMENTO DEL CARICO PER ASSE DI ROTABILI FERROVIARI PER TRASPORTO MERCI
No full textLo sviluppo di un sistema di trasporto ferroviario merci richiede di minimizzare i tempi di percorrenza e massimizzare la capacità di carico dei convogli. Questo obiettivo può essere raggiunto mediante tre diverse strategie, che possono essere adottate separatamente o in modo congiunto. Le strategie consistono sostanzialmente nell'aumento della capacità di carico del singolo carro, nell'aumento della lunghezza del convoglio e nell'aumento della velocità del veicolo. La possibilità di attuare simultaneamente le tre strategie è possibile solo disponendo di infrastrutture dedicate e utilizzando una progettazione specifica della linea e dei veicoli. Il lavoro illustra gli effetti di un innalzamento del carico per asse, oltre al limite attualmente consentito in Italia, sui principali indicatori utilizzati dalla norma UIC per l'omologazione del materiale rotabile. Le valutazioni sono state effettuate utilizzando un tracciato reale di buona qualità ed un modello numerico di un veicolo di tipo Y2
Figure e stereotipi dell’autismo nel cinema e nelle serie TV. Il caso Avvocata Woo
No full textIn this article we propose three ways of looking at autism in film and TV series, which are united by a critique of stereotypes. We will firstly review the representations of autism in cinema and TV seriality, then we will examine some critical positions related to the scientific debate on autism and its media representations; finally, we will present a brief socio-semiotic analysis of the South Korean series Extraordinary Attorney Woo (ENA, Netflix, 2022)
Deep inelastic scattering structure functions of holographic spin-1 hadrons with N f ≥ 1
No full textTwo-point current correlation functions of the large N limit of supersymmetric and non-supersymmetric Yang-Mills theories at strong coupling are investigated in terms of their string theory dual models with quenched flavors. We consider non-Abelian global symmetry currents, which allow one to investigate vector mesons with N f > 1. From the correlation functions we construct the deep inelastic scattering hadronic tensor of spin-one mesons, obtaining the corresponding eight structure functions for polarized vector mesons. We obtain several relations among the structure functions. Relations among some of theirmoments are also derived. Aspects of the sub-leading contributions in the 1/N and N f /N expansions are discussed. At leading order we find a universal behavior of the hadronic structure functions.Fil: Koile, Leandro Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Macaluso, Sebastián. Rutgers University; Estados UnidosFil: Schvellinger, Martín Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentin
Media Access Schemes for Indirect Diffused Free-Space Optical Networks
No full textIn this paper, we propose a set of three media access control (MAC) schemes for an indirect diffused light free-space optical communications (ID-FSOCs). ID-FSOC has been recently proposed to establish wireless high-speed (i.e., ≥1 Gbps) network access using FSO from stations that have no line-of-sight (LOS) with the access point. ID-FSOC employs a diffuse reflector (DR) to uniformly reflect diffused light from an incident laser to all directions, except towards the DR. To establish a link, ID-FSOC requires LOS between the transmitter and the DR and between DR and the receiver. In this way, ID-FSOC relaxes the location of stations as long as they keep LOS to the DR. We analyze the performance and scalability of proposed schemes. We also consider the impact of the zoom-in time of a receiver in our evaluations. Our results show that our proposed MAC schemes achieve high channel utilization and higher throughput than carrier-sense multiple access schemes
Patterns of Optic Nerve Damage in Different Optic Neuropathies Assessed by Combined HRT and GDx Imaging
No full textPhysiological comparison between competitive and beginner high intensity functional training athletes
No full textIntroduction: Among high intensity trainings, high intensity functional training (HIFT) represent one of the most recent developments. The aim of the present study was to investigate the differences between a group of competitive (CMP) HIFT athletes and a group of age- and gender-matched beginner (BGN) HIFT athletes, to clarify the physiological characteristics of each group and the reasons for differences. Methods: 10 BGN (32.5 ± 6.2 years) and 10 CMP (29.0 ± 5.4 years) athletes, were included in the study and were evaluated for anthropometry, VO2peak, lactate threshold, isometric and isokinetic leg maximal power and strength, handgrip and maximal anaerobic power. Results: Compared to BGN athletes, CMP reached higher levels of VO2peak (56.1 ± 2.89 ml·kg-1·min-1 CMP vs. 46.5 ± 6.86 ml·kg-1·min-1 BGN; p < .001), lower limb maximal power (4.5 ± 0.42 W·kg-1 CMP vs. 2.9 ± 0.67 W·kg-1 BGN; p < .001), maximal handgrip strength (61.1 ± 8.20 N·kg-1 CMP vs. 45.1 ± 7.58 N·kg-1 BGN; p < .001), maximal knee extension isometric strength (11.7 ± 1.43 N·kg-1 CMP vs. 9.1 ± 2.00 N·kg-1 BGN; p < .05), isokinetic strength (281.3 ± 28.18 N·kg-1 CMP vs. 234.6 ± 26.15 N·kg-1 BGN; p < .05) and anaerobic peak power (639.1 ± 125.54 W·kg-1 CMP vs. 442.7 ± 155.96 W· kg-1 BGN; p > .006), while anaerobic capacity did not show significant differences (101.8 ± 9.33 kJ CMP vs. 87.0 ± 28.37 kJ BGN; p = .1). Conclusions: CMP athletes showed greater physiological adaptations in aerobic fitness and strength than BGN. Differences may be attributed to the technical skills acquired by CMP and not only to the physiological adaptations induced by the specific training. The lack of differences in anaerobic capacity is likely due to an early and fast improvement in BGN, compared to other parameters
Energy, exergy and economic analysis of a novel geothermal energy system for wastewater and sludge treatment
No full textWastewater treatment is one of the most energy-consuming processes in the water sector, requiring both electric and thermal energy. In order to improve their sustainability, renewable energy sources can supply such energy demands in wastewater treatment plants, especially in small islands, where the lack of connections with mainland and environmental restrictions promote the use of unconventional fuels and technologies for energy production and waste treatment. For this reason, in this work, the use of geothermal energy is proposed for electric and thermal energy generation for wastewater and sludge treatment. An energy, exergy and economic analysis for the developed system is carried out. The study is carried out for a district wastewater treatment plant on the island of Ischia, in southern Italy, which presents diffused low-medium enthalpy geothermal sources, considered in this work to power an organic Rankine cycle system for electric energy production and to heat the desiccant flow for sludge drying. The proposed system reduces sludge to be disposed by around 70% and it covers 100% of the electrical energy demand of the wastewater treatment plant, with a production of 1.68 kWh per kg of processed sludge. Despite the high investment, the revenues deriving from the avoided sludge disposal and the electricity production, make the system convenient, with a simple payback of about 5 years and a saving of CO2 equivalent emissions equal to 628 tons/year. Therefore, the energy, exergy and economic analysis of the proposed system shows that the geothermal source is a viable and environmentally sustainable solution to produce electrical and thermal energy for wastewater and sludge treatment plants, especially in small islands or energy isolated systems, where electric energy supply and sewage sludge treatment are commonly critical challenges
Comparing treatment options for large vessel vasculitis
No full textIntroduction: Giant cell arteritis (GCA) and Takayasu arteritis (TAK) are the major forms of large vessel vasculitis (LVV). Glucocorticoids represent the cornerstone of LVV treatment, however, relapses and recurrences frequently occur when they are tapered or stopped, determining a prolonged exposure to glucocorticoids and a subsequent increased risk of glucocorticoid-related side effects. Therefore, conventional and biologic immunosuppressive drugs have been proposed to obtain a glucocorticoid-sparing effect. Areas covered: We searched PubMed® using the keywords ‘giant cell arteritis/drug therapy’ and ‘Takayasu Arteritis/drug therapy’ OR ‘Takayasu Arteritis/surgery’ This review focuses on the management of LVV, based on the current evidence while highlighting the differences in terms of therapeutic management of TAK and GCA. Expert opinion: Conventional disease modifying anti-rheumatic drugs, such as methotrexate or azathioprine, are recommended in association to glucocorticoids for selected GCA and all TAK patients. Two randomized placebo-controlled trials recently demonstrated the efficacy of tocilizumab in reducing relapses and cumulative prednisone dosage in GCA patients with newly diagnosed or relapsing disease. Observational evidence and two small randomized controlled trials support the use of TNF-alpha inhibitors and tocilizumab as glucocorticoid-sparing agents in relapsing TAK, albeit high-quality evidence regarding the management of TAK is still lacking
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