Joint Observation of the Galactic Center with MAGIC and CTA-LST-1

MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes (IACTs), designed to detect very-high-energy gamma rays, and is operating in stereoscopic mode since 2009 at the Observatorio del Roque de Los Muchachos in La Palma, Spain. In 2018, the prototype IACT of the Large-Sized Telescope (LST-1) for the Cherenkov Telescope Array, a next-generation ground-based gamma-ray observatory, was inaugurated at the same site, at a distance of approximately 100 meters from the MAGIC telescopes. Using joint observations between MAGIC and LST-1, we developed a dedicated analysis pipeline and established the threefold telescope system via software, achieving the highest sensitivity in the northern hemisphere. Based on this enhanced performance, MAGIC and LST-1 have been jointly and regularly observing the Galactic Center, a region of paramount importance and complexity for IACTs. In particular, the gamma-ray emission from the dynamical center of the Milky Way is under debate. Although previous measurements suggested that a supermassive black hole Sagittarius A* plays a primary role, its radiation mechanism remains unclear, mainly due to limited angular resolution and sensitivity. The enhanced sensitivity in our novel approach is thus expected to provide new insights into the question. We here present the current status of the data analysis for the Galactic Center joint MAGIC and LST-1 observations

An innovative car sharing electric vehicle system: An Italian experience

This paper focuses on the introduction of an innovative electric vehicle car sharing system in Rome. Specifically, the system is designed for a university community (Roma Tre University), thus it is reserved for students and employees. The fleet is composed by 30 electric vehicles and 56 recharging points have been installed in several departments of the University. The service is designed as a free floating system, allowing commuting and leisure trips. The trips are not spatially limited, but the rental has to be opened and closed within a delimited area in the city. This paper analyses the starting stage of the project. The results of a RP (Revealed Preferences) and SP (Stated Preferences) survey are discussed. The survey has been filled out by a sample of 950 potential users. Important indications have been obtained on the behavioural attributes that mostly affect the electric vehicle car sharing subscriptors and service utilization. Afterwards, specific behavioural models based on random utility theory have been proposed for predicting modal switch, considering the introduction of the new service. Attributes such as the âGreen Attitudeâ, the âSharing Attitudeâ and the âDevice attitudeâ have been analysed in terms of their impacts on the mode choice, underlining their weight and statistical significance compared to attributes as distances and travel times

Valorisation through Lactic Fermentation of Industrial Wastewaters from a Bean Blanching Treatment

In recent years, scientific research and industries have been focusing on the application of biological treatments aimed at imparting functional properties to waste products from food industries according to the principles on which the circular economy model is based, namely, the recovery, valorisation, and reuse of wastes. This work aimed at exploring the possibility of valorising waters from the blanching process of dried navy beans through lactic acid fermentation using Lacticaseibacillus paracasei CBA L74 as a starter. Two samples at different solid concentrations (0.75 °Bx and 1.25 °Bx) were fermented, and, in both cases, a bacterial load of 8 Logs and a lactic acid concentration of approximately 1.3 g/L were reached, despite the lack of nutrients. An unusual pH trend, characterised by an initial decrease and unexpected final rise, was observed during the fermentation of both samples: simultaneously, an increase in protein content was observed, suggesting that the proteolytic action of the microorganism could be responsible for the release of pH-increasing substances. In both cases, a slight increase in total polyphenols (approximately 23.3–33.72%) and flavonoids (approximately 42.3–52%) due to fermentation was observed, with a corresponding improvement in antioxidant capacity (approximately 25.32–37.72%). A significant increase in saponin concentration was determined for the most concentrated blanching water (from 2.87 ± 0.28 to 6.68 ± 0.69 mgOAE/mL), leading to an improvement in foaming properties and an enhanced capacity to produce stable emulsions. The obtained results confirmed the possibility of reducing water consumption from blanching operations, as well as finding valorisation opportunities for this side stream through a safe and inexpensive fermentation treatment

L'olivicoltura in Emilia può avere buone chance

Uno studio realizzato dalle Università di Piacenza e Parma sottolinea le opportunità di espansione nelle province occidentali della regione

Bond between EBR FRP and concrete

This chapter provides an overview of the debonding process between the FRP reinforcement and the concrete substrate. The main aspects of the debonding phenomenon are described and discussed, showing also mechanical interpretation of different processes. Experimental techniques to study the bond behavior between FRP and concrete are also described and corresponding available experimental results are shown to compare performances of different set-ups. Finally, an extensive description of the existing bond capacity predicting models is reported, together with the main international Codes provisions, allowing the designer for operating in common practice

Der Kultwert des Ausstellungswertes ubd die Zeitlichkeit musealer Gegenstaende

Museen sind R\ue4ume, in denen und durch welche Zeit und damit Tradition konstruiert wird. Die in ihnen sich befindenden Gegenst\ue4nde unterliegen also einer k\ufcnstlich hergestellten Zeitlichkeit und dies charakterisiert ihren Ausstellungswert, dem ein ganz eigener, sehr zweideutiger Tauschwert zukommt. Die Werke in den Museen jedoch sind tot, was in ihrer vorgeblichen Zeitlosigkeit zum Ausdruck kommt, die ihnen jedoch von au fen aufgepfropft wird; sie f\ufchren ein Scheinleben. Mit der Zweideutigkeit des Tauschwertes verbinden sich jedoch auch zwei weitere Momente: der Fetischcharakter und das Gl\ufccksversprechen, das die Kunstwerke mit den Waren teilen und das an ihren Vorschein gebunden ist und nicht an ihr museales Nachleben. An beide ist der museale Massentourismus mit all seinen Entfremdungserscheinungen gebunden. Folgendes ist das Problem: Ist es m\uf6glich, der Kunst wieder einen Gebrauchswert zuzuschreiben, der ihrem momentanen Tauschwert gegen\ufcber gesellschaftlich und kulturell positiv wirksam w\ufcrde

Optimized radiofrequency lesions through local impedance guidance for effective CTI ablation in right atrial flutter

Background: Although radiofrequency (RF) catheter ablation of cavo-tricuspid isthmus (CTI) is an established treatment for typical right atrial flutter (RAFL), it remains to be established whether local tissue impedance (LI) is able to predict effective CTI ablation and what LI drop values during ablation should be used to judge a lesion as effective. We aimed to investigate the ability of LI to predict ablation efficacy in patients with RAFL.Methods: RF delivery was guided by the DirectSense (TM) algorithm. Successful single RF application was defined according to a defragmentation of atrial potentials (DAP), reduction of voltage (RedV) by at least 80% or changes on unipolar electrogram (UPC). The ablation endpoint was the creation of bidirectional conduction block (BDB) across the isthmus.Results: 392 point-by-point RF applications were analyzed in 48 consecutive RAFL patients. The mean baseline LI was 105.4 +/- 12 Omega prior to ablation and 92.0 +/- 11 Omega after ablation (p < 0.0001). According to validation criteria, absolute drops in impedance were larger at successful ablation sites than at ineffective ablation sites (DAP: 17.8 +/- 6 Omega vs. 8.7 +/- 4 Omega; RedV: 17.2 +/- 6 Omega vs. 7.8 +/- 5 Omega; UPC: 19.6 +/- 6 Omega vs. 10.1 +/- 5 Omega, all p < 0.0001). LI drop values significantly increased according to the number of criteria satisfied (ranging from 7.5 Omega to 19.9). BDB was obtained in all cases. No procedure-related adverse events were reported.Conclusions: A LI-guided approach to CTI ablation was safe and effective in treating RAFL. The magnitude of LI drop was associated with effective lesion formation and BDB and could be used as a marker of ablation efficacy