Estudo das metodologias de destilação na quantificação do Nitrogênio das Bases Voláteis Totais em pescada, tilápia e camarão

O pescado apresenta grande importância no panorama atual e a manutenção da sua qualidade e inocuidade é imprescindível para se obter alimento seguro. Por ser um alimento altamente perecível, o pescado necessita de cuidados em todas as etapas da cadeia produtiva. Um dos métodos utilizados mundialmente para avaliar a qualidade do pescado é a determinação do Nitrogênio das Bases Voláteis Totais (N-BVT), que consiste na quantificação de compostos de baixo peso molecular, como a trimetilamina, dimetilamina e amônia, que são formados durante o processo de deterioração do pescado. O objetivo deste trabalho foi avaliar a eficiência de duas metodologias de quantificação de N-BVT (BRASIL 1981 e BRASIL 1999) por destilação, para três espécies de pescado de importância comercial, assim como buscar a diminuição do volume de amostras e reagentes utilizados. Para verificar a eficiência das metodologias utilizou-se um índice de recuperação, adicionando-se quantidades conhecidas de sulfato de amônio [(NH4)2SO4] nas amostras e comparando-se o teor de N-BVT recuperado com uma amostra controle. Foram testadas modificações na metodologia BRASIL 1999 quanto à redução nas quantidades de amostra e reagente. Considerando-se o desempenho quanto à recuperação do nitrogênio adicionado às amostras, os resultados demostraram que não houve diferença quanto à recuperação de nitrogênio nos dois métodos (BRASIL 1981 e BRASIL 1999) para as três espécies estudadas, evidenciando-se que ambos podem ser empregados com a mesma eficiência. Os resultados indicam que a redução na quantidade de amostra e reagentes, nas determinações de N-BVT para o método BRASIL 1999, pode interferir significativamente nos resultados

Filters design and characterization for LAD instrument onboard eXTP

The LAD (Large Area Detector) instrument, onboard the Sino-European mission eXTP (enhanced X-ray Timing and Polarimetry), will perform single-photon, high-resolution timing and energy measurements, in the energy range 2–30 keV, with a large collecting area. Its silicon drift detectors need shielding from NIR/Vis/UV light by astrophysical sources and the bright Earth, to avoid performance degradation. Filters made of an Al coated thin polyimide (PI) membrane will guarantee the needed out-of-band rejection while offering high X-ray transparency. They will be placed between the detectors and the capillary plate plate collimators, open to the external environment. The mission is now in phase B2 and a baseline design for the filters was produced. We describe the filter design and modeling activity, and report the characterization performed so far on X-ray transmission, pinhole and defects, thermo-vacuum cycling endurance, and bright Earth optical load shielding properties

Aviocentury (the 100th release selected by Christian Temporale)

Avioground is proudly to present Aviocentury Various Artists, the 100th label's release that includes 30 exclusive anthems of big names like Carmelo Carone, Cristian Paduraru, Roberto Carbonero, Greg Goldsack, Feedback, Ivan Enot, DJ Ralmm, Dos Rumanos, Ilya Mosolov, Ecco & many more, selected by our brother & evergreen top Italian dj Christian Temporale

The large area detector onboard the eXTP mission

The eXTP (enhanced X-ray Timing and Polarimetry) mission is a major project of the Chinese Academy of Sciences (CAS) and China National Space Administration (CNSA) currently performing an extended phase A study and proposed for a launch by 2025 in a low-earth orbit. The eXTP scientific payload envisages a suite of instruments (Spectroscopy Focusing Array, Polarimetry Focusing Array, Large Area Detector and Wide Field Monitor) offering unprecedented simultaneous wide-band X-ray spectral, timing and polarimetry sensitivity. A large European consortium is contributing to the eXTP study and it is expected to provide key hardware elements, including a Large Area Detector (LAD). The LAD instrument for eXTP is based on the design originally proposed for the LOFT mission within the ESA context. The eXTP/LAD envisages a deployed 3.4 m2 effective area in the 2-30 keV energy range, achieved through the technology of the large-area Silicon Drift Detectors - offering a spectral resolution of up to 200 eV FWHM at 6 keV - and of capillary plate collimators - limiting the field of view to about 1 degree. In this paper we provide an overview of the LAD instrument design, including new elements with respect to the earlier LOFT configuration

The scientific payload on-board the HERMES-TP and HERMES-SP CubeSat missions

none103siHERMES (High Energy Rapid Modular Ensemble of Satellites) Technological and Scientific pathfinder is a space borne mission based on a LEO constellation of nano-satellites. The 3U CubeSat buses host new miniaturized detectors to probe the temporal emission of bright high-energy transients such as Gamma-Ray Bursts (GRBs). Fast transient localization, in a field of view of several steradians and with arcmin-level accuracy, is gained by comparing time delays among the same event detection epochs occurred on at least 3 nano-satellites. With a launch date in 2022, HERMES transient monitoring represents a keystone capability to complement the next generation of gravitational wave experiments. In this paper we will illustrate the HERMES payload design, highlighting the technical solutions adopted to allow a wide-energy-band and sensitive X-ray and gamma-ray detector to be accommodated in a CubeSat 1U volume together with its complete control electronics and data handling system.noneEvangelista, Yuri; Fiore, Fabrizio; Fuschino, Fabio; Campana, Riccardo; Ceraudo, Francesco; Demenev, Evgeny; Guzman, Alejandro; Labanti, Claudio; La Rosa, Giovanni; Fiorini, Mauro; Gandola, Massimo; Grassi, Marco; Mele, Filippo; Morgante, Gianluca; Nogara, Paolo; Piazzolla, Raffaele; Pliego Caballero, Samuel; Rashevskaya, Irina; Russo, Francesco; Sciarrone, Giulia; Sottile, Giuseppe; Milankovich, Dorottya; Pál, András; Ambrosino, Filippo; Auricchio, Natalia; Barbera, Marco; Bellutti, Pierluigi; Bertuccio, Giuseppe; Borghi, Giacomo; Cao, Jiewei; Chen, Tianxiang; Dilillo, Giuseppe; Feroci, Marco; Ficorella, Francesco; Lo Cicero, Ugo; Malcovati, Piero; Morbidini, Alfredo; Pauletta, Giovanni; Picciotto, Antonino; Rachevski, Alexandre; Santangelo, Andrea; Tenzer, Chistoph; Vacchi, Andrea; Wang, Lingjun; Xu, Yupeng; Zampa, Gianluigi; Zampa, Nicola; Zorzi, Nicola; Burderi, Luciano; Lavagna, Michèle; Bertacin, Roberto; Lunghi, Paolo; Monge, Angel; Negri, Barbara; Pirrotta, Simone; Puccetti, Simonetta; Sanna, Andrea; Amarilli, Fabrizio; Amelino-Camelia, Giovanni; Bechini, Michele; Citossi, Marco; Colagrossi, Andrea; Curzel, Serena; Della Casa, Giovanni; Cinelli, Marco; Del Santo, Melania; Di Salvo, Tiziana; Feruglio, Chiara; Ferrandi, Fabrizio; Fiorito, Michele; Gacnik, Dejan; Galgóczi, Gabor; Gambino, Angelo Francesco; Ghirlanda, Giancarlo; Gomboc, Andreja; Karlica, Mile; Efremov, Pavel; Kostic, Uros; Clerici, Aurora; Lopez Fernandez, Borja; Maselli, Alessandro; Nava, Lara; Ohno, Masanori; Ottolina, Daniele; Pasquale, Andrea; Perri, Matteo; Piccinin, Margherita; Prinetto, Jacopo; Riggio, Alessandro; Ripa, Jakub; Papitto, Alessandro; Piranomonte, Silvia; Scala, Francesca; Selcan, David; Silvestrini, Stefano; Rotovnik, Tomaz; Virgilli, Enrico; Troisi, Ivan; Werner, Norbert; Zanotti, Giovanni; Anitra, Alessio; Manca, Arianna; Clerici, AuroraEvangelista, Yuri; Fiore, Fabrizio; Fuschino, Fabio; Campana, Riccardo; Ceraudo, Francesco; Demenev, Evgeny; Guzman, Alejandro; Labanti, Claudio; La Rosa, Giovanni; Fiorini, Mauro; Gandola, Massimo; Grassi, Marco; Mele, Filippo; Morgante, Gianluca; Nogara, Paolo; Piazzolla, Raffaele; Pliego Caballero, Samuel; Rashevskaya, Irina; Russo, Francesco; Sciarrone, Giulia; Sottile, Giuseppe; Milankovich, Dorottya; Pál, András; Ambrosino, Filippo; Auricchio, Natalia; Barbera, Marco; Bellutti, Pierluigi; Bertuccio, Giuseppe; Borghi, Giacomo; Cao, Jiewei; Chen, Tianxiang; Dilillo, Giuseppe; Feroci, Marco; Ficorella, Francesco; Lo Cicero, Ugo; Malcovati, Piero; Morbidini, Alfredo; Pauletta, Giovanni; Picciotto, Antonino; Rachevski, Alexandre; Santangelo, Andrea; Tenzer, Chistoph; Vacchi, Andrea; Wang, Lingjun; Xu, Yupeng; Zampa, Gianluigi; Zampa, Nicola; Zorzi, Nicola; Burderi, Luciano; Lavagna, Michèle; Bertacin, Roberto; Lunghi, Paolo; Monge, Angel; Negri, Barbara; Pirrotta, Simone; Puccetti, Simonetta; Sanna, Andrea; Amarilli, Fabrizio; Amelino-Camelia, Giovanni; Bechini, Michele; Citossi, Marco; Colagrossi, Andrea; Curzel, Serena; Della Casa, Giovanni; Cinelli, Marco; Del Santo, Melania; Di Salvo, Tiziana; Feruglio, Chiara; Ferrandi, Fabrizio; Fiorito, Michele; Gacnik, Dejan; Galgóczi, Gabor; Gambino, Angelo Francesco; Ghirlanda, Giancarlo; Gomboc, Andreja; Karlica, Mile; Efremov, Pavel; Kostic, Uros; Clerici, Aurora; Lopez Fernandez, Borja; Maselli, Alessandro; Nava, Lara; Ohno, Masanori; Ottolina, Daniele; Pasquale, Andrea; Perri, Matteo; Piccinin, Margherita; Prinetto, Jacopo; Riggio, Alessandro; Ripa, Jakub; Papitto, Alessandro; Piranomonte, Silvia; Scala, Francesca; Selcan, David; Silvestrini, Stefano; Rotovnik, Tomaz; Virgilli, Enrico; Troisi, Ivan; Werner, Norbert; Zanotti, Giovanni; Anitra, Alessio; Manca, Arianna; Clerici, Auror

The HERMES-technologic and scientific pathfinder

HERMES-TP/SP (High Energy Rapid Modular Ensemble of Satellites Technologic and Scientific Pathfinder) is a constellation of six 3U nano-satellites hosting simple but innovative X-ray detectors, characterized by a large energy band and excellent temporal resolution, and thus optimized for the monitoring of Cosmic High Energy transients such as Gamma Ray Bursts and the electromagnetic counterparts of Gravitational Wave Events, and for the determination of their positions. The projects are funded by the Italian Ministry of University and Research and by the Italian Space Agency, and by the European Union's Horizon 2020 Research and Innovation Program under Grant Agreement No. 821896. HERMES-TP/SP is an in-orbit demonstration, that should be tested starting from 2022. It is intrinsically a modular experiment that can be naturally expanded to provide a global, sensitive all sky monitor for high-energy transients