137 results on '"Morello, Giuseppe"'
Search Results
102. Confronto fra due cantieri di raccolta delle olive in Sicilia
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CARRARA, Michele, CATANIA, Pietro, PIPITONE, Felice, VALLONE, Mariangela, MORELLO, Giuseppe, CARRARA, M, CATANIA, P, PIPITONE, F, VALLONE, M, and MORELLO, G
- Abstract
Vengono analizzati diversi cantieri per la raccolta delle olive. I risultati valutano i consumi energetici e le capacità di lavoro.
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- 2005
103. Indagine sull'ergonomia e la sicurezza dei trattori nelle aziende agricole della Sicilia Centro-Occidentale
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MORELLO, Giuseppe and MORELLO G
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sicurezza, ergonomia - Abstract
Vengono analizzati i sistemi di sicurezza sulle trattrici presenti in alcune aziende della Sicilia occidentale
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- 2005
104. ASSESSMENT OF CHEMICAL AND PHYSICAL RISK FACTORS IN GREENHOUSES
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CARRARA, Michele, CATANIA, Pietro, MORELLO, Giuseppe, PLANETA, Antonio, VALLONE, Mariangela, CARRARA, M, CATANIA, P, MORELLO, G, PLANETA, A, and VALLONE, M
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Greenhouse, risk factors, operator’s health - Abstract
Crop production in greenhouses needs the use of chemicals and requires high levels of temperature and relative humidity to assure the increasing of crop production. This can cause risks for the health of the operators, especially if they are not equipped with protection devices. The risks may also vary with the type and/or size and/or shape of the protected structures. In order to determine the influence of different coverings on type and amount of risks, chemical and physical risk factors were measured inside greenhouses with different cladding materials (glass panels and plastic films) after crop management. In these two different greenhouses typologies, that were similar for location and crop, the same crop practices were performed. To measure ambient temperature, relative humidity, the levels of VOC (Volatile Organic Compounds) and to process the measured data, were used two electronic systems equipped with a data logger and a photo ionisation sensor. The results of these measurements gave useful indications about the health of the operators working inside the greenhouses in order to control the risk factors.
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- 2004
105. No news from abroad: A comparative content analysis of news issues on Italian radio
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Bonini, Tiziano, primary and Morello, Giuseppe, additional
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- 2014
- Full Text
- View/download PDF
106. First tests of mechanical harvest of Origanum vulgare L
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CARRARA, Michele, CATANIA, Pietro, COMPARETTI, Antonio, FEBO, Pierluigi, MORELLO, Giuseppe, ORLANDO, SANTO, CARRARA, M, CATANIA, P, COMPARETTI, A, FEBO, P, MORELLO, G, and ORLANDO, S
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Oregano, reaper-binder, working productivity, harvesting quality ,Settore AGR/09 - Meccanica Agraria - Abstract
In Italy Origanum vulgare L. is cultivated only in few areas and its production does not even satisfy the national market demand. Until now the interest on this crop has been very low because of the high cost of manual harvest and bunch binding. The aim of this work is to evaluate the use of a reaper-binder (made for harvesting cereal crops) for harvesting and bunch binding Origanum vulgare L. The tests were carried out in Sicily, in the summer of 2001. The mechanical harvest was carried out using the reaper-binder unmodified, but the results were not satisfactory. The machine was then modified reducing its forward speed and cutting height, in order to improve its working productivity and harvesting quality. The tests of mechanical harvest were compared to parallel manual harvest tests. The results show that the modified reaper-binder has a working productivity much higher than that obtained with the manual harvest. Moreover, its harvesting quality (bunch size and binding height) is similar to that obtained manually.
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- 2003
107. Mapping soil compaction measuring cone penetrometer resistance
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CARRARA, Michele, COMPARETTI, Antonio, FEBO, Pierluigi, MORELLO, Giuseppe, ORLANDO, SANTO, CARRARA, M, COMPARETTI, A, FEBO, P, MORELLO, G, and ORLANDO, S
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Settore AGR/09 - Meccanica Agraria ,Soil compaction, cone penetrometer resistance, agricultural machine traffic, DGPS, maps - Abstract
The quickest way for monitoring soil compaction differences in a field is measuring cone penetrometer resistance. Soil compaction can be significantly spatially variable, depending on the amount and distribution of the traffic of agricultural machines in the field. Therefore, it could be useful to measure soil compaction on a localised basis, in order to produce maps of the damages caused by the traffic of agricultural machines and/or the action of tillage implements. Aim of this paper is to present a system developed by the Department I.T.A.F. for the geo-referenced measurement of cone penetrometer resistance and for mapping soil compaction. This system was built fitting a minitransporter with an electronic penetrometer and a DGPS mobile receiver. In order to test the system, several measurements were carried out. A GIS software was used to produce soil compaction maps.
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- 2003
108. First tests of spatially variable rate herbicide application on Durum wheat in Sicily
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CARRARA, Michele, COMPARETTI, Antonio, FEBO, Pierluigi, MORELLO, Giuseppe, ORLANDO, SANTO, CARRARA, M, COMPARETTI, A, FEBO, P, MORELLO, G, and ORLANDO, S
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Settore AGR/09 - Meccanica Agraria ,Spatially variable rate, herbicide application - Abstract
Using the conventional farming system, durum wheat requires the spraying of high herbicide rates. Herbicide residues can cause pollution of soil and ground water. This paper refers to first tests of spatially variable rate herbicide application on durum wheat. The tests showed the effectiveness of the variable rate herbicide application, which allowed an almost even grain yield over the entire field and a saving of 27% of herbicide mixture.
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- 2002
109. Prove di diserbo spazialmente variabile in un'azienda cerealicola siciliana
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COMPARETTI, Antonio, FEBO, Pierluigi, MORELLO, Giuseppe, ORLANDO, SANTO, COMPARETTI, A, FEBO, P, MORELLO, G, and ORLANDO, S
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Settore AGR/09 - Meccanica Agraria ,Diserbo spazialmente variabile - Abstract
In soils having a significant within-field spatial variability of physiical, chemical and biological characteristics, conventional agriculture, based on the the distribution of equal rates of crop inputs (fertilisers, herbicides, pesticides, etc.) can cause excess of these inputs in some points and deficit in others. The implementation of precision agriculture can prevent these spoilage or deficit. Herbicide spraying is one of the field operations which can get economical benefits from the spatially variable soil managemnent. The section of Agricultural Mechanisation of the Department of Engineering and Technologies in Agriculture and Forestry (ITAF) has set up a system for spraying herbicide in annual herbaceous crops. This system, mounted on a sprayer, consists of: a DGPS system, able to compute the machine real time "corrected" position; an electronic system, able to set up the herbicide rate, proportionally related to the machine forward speed. The aim is to spray spatilally variable rates of herbicide in cereal fields having a significant weed spatial variability.
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- 2001
110. Consumi energetici in diverse tipologie di minicaseifici
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COMPARETTI, Antonio, FEBO, Pierluigi, FINOLI, Carlo, MORELLO, Giuseppe, ORLANDO, SANTO, COMPARETTI, A, FEBO, P, FINOLI, C, MORELLO, G, and ORLANDO, S
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Consumi energetici, minicaseifici ,Settore AGR/09 - Meccanica Agraria - Abstract
Recent regulations about the food health and safety and methods of milk processing obliged most sheep farmers not to process it on their own. Therefore, in Sicily most sheep breeders sold their milk to some small dairies. On the contrary, if sheep breeders had modern plants for processing also small amounts of milk in some suitable farm rooms, they could earn the additional value, due to cheese and ricotta sale. The agricultural Mechanics and Food Industry Sections of the Department of Engineering and Technologies in Agriculture and Forestry (ITAF) of Palermo University measured and assessed the consumptions of fuel electrical energy in some small dairies of 200 and 300 l capacity, in order to establish if these plants could be profitable for small and medium milk producers. This research is part of the project "Dairy innovations for improving the quality of Sicilian typical milk products: study of technical, operational and productive problems", sponsored by the Sicilian Region (POP) with EU funding. The results showed that small diaries powered by diesel fuel have less energy consumptions rather than those powered by liquide propane gas (GPL); moreover the small dairies equipped with tank having bottom and side serpentines showed the highest thermal energy developed per processed milk volume.
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- 2001
111. Livelli di rumorosità nell'imbottigliamento di vino e olio
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FEBO, Pierluigi, MORELLO, Giuseppe, ORLANDO, SANTO, FEBO, P, MORELLO, G, and ORLANDO, S
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Settore AGR/09 - Meccanica Agraria ,FONOMETRO, LIVELLI SONORI, IMPIANTI AGROALIMENTARI - Published
- 1999
112. Macchine a misura d'uomo
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MORELLO, Giuseppe and MORELLO, G
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Settore AGR/09 - Meccanica Agraria ,TRATTRICI AGRICOLE, EVOLUZIONE - Published
- 1999
113. Whole body vibrations during field operations in the vineyard
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Catania, Pietro, primary, Vallone, Mariangela, additional, Alleri, Maria, additional, Morello, Giuseppe, additional, Spartà, Giuseppe, additional, and Febo, Pierluigi, additional
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- 2013
- Full Text
- View/download PDF
114. TIPOLOGIA E CARATTERISTICHE DEI FRANTOI DI ALCUNE REGIONI ITALIANE
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FEBO, Pierluigi, MORELLO, Giuseppe, PIPITONE, Felice, Peri, G, Febo, P, MORELLO, G, Peri, G, and Pipitone, F.
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FRANTOI, TIPOLOGIE COSTRUTTIVE ,Settore AGR/09 - Meccanica Agraria - Published
- 1997
115. TIPOLOGIA E CARATTERISTICHE DEI FRANTOI SICILIANI
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FEBO, Pierluigi, MORELLO, Giuseppe, PIPITONE, Felice, Febo, P, MORELLO, G, and Pipitone, F
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Settore AGR/09 - Meccanica Agraria ,TIPOLOGIE COSTRUTTIVE FRANTOI, SICILIA - Published
- 1995
116. ANALISI DEI COSTI ENERGETICI DI REFRIGERAZIONE NELLA PRODUZIONE DEI VINI BIANCHI
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FEBO, Pierluigi, MORELLO, Giuseppe, PIPITONE, Felice, Peri, G, Febo, P, MORELLO, G, Peri, G, and Pipitone, F
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Settore AGR/09 - Meccanica Agraria ,ENERGIA, REFRIGERAZIONE VINI - Published
- 1995
117. Report on the Meeting
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MORELLO, Giuseppe and MORELLO, G
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report of meeting - Published
- 1995
118. ASPETTI ENERGETICI DELL'ESTRAZIONE DELL'OLIO D'OLIVA IN IMPIANTI A CICLO CONTINUO
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MORELLO, Giuseppe, PLANETA, Antonio, Peri, G, MORELLO, G, Peri, G, and Planeta, A
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Settore AGR/09 - Meccanica Agraria ,ESTRAZIONE OLIO D'OLIVA, ENERGIA - Published
- 1994
119. IL FABBISOGNO DI ENERGIA NEL TRATTAMENTO DI ESSICAZIONE DELLE SANSE
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MORELLO, Giuseppe, PLANETA, Antonio, Peri, G, MORELLO, G, Peri, G, and Planeta, A
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Settore AGR/09 - Meccanica Agraria ,ENERGIA, SANSE - Published
- 1994
120. CONFRONTO TRA FERTIRRIGAZIONE CON ACIDI MINERALI E CON CONCIMI CONVENZIONALI
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FENECH, Ludovico, DI PISA, Angelo, MORELLO, Giuseppe, Fenech, L, Di Pisa, A, and MORELLO, G
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concimazione minerale - Published
- 1994
121. ENERGY REQUIREMENTS BOTH FOR OLIVE OIL AND OLIVE HUSK OIL EXTRACTION
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MORELLO, Giuseppe, Sarcinelli, S., MORELLO, G, and Sarcinelli, S
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Settore AGR/09 - Meccanica Agraria ,ENERGY REGUIREMENTS, OLIVE OIL AND OLIVE HUSK OIL EXTRACTION - Published
- 1994
122. LA LAVORAZIONE DEGLI AGRUMI: CONSUMI DI ENERGIA E CAPACITÀ DI LAVORO
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FEBO, Pierluigi, MORELLO, Giuseppe, Sarcinelli, S., Febo, P, MORELLO, G, and Sarcinelli, S
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Settore AGR/09 - Meccanica Agraria ,AGRUMI, ENERGIA - Published
- 1994
123. PROVE COMPARATIVE SULLA RICHIESTA DI ENERGIA NECESSARIA PER L'ESTRAZIONE DELL'OLIO DALLE OLIVE E DALLE SANSE DI LAVORAZIONE
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MORELLO, Giuseppe, SARCINELLI, S., MORELLO, G, and SARCINELLI, S
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ENERGIA, ESTRAZIONE OLIO DI OLIVA E SANSE ,Settore AGR/09 - Meccanica Agraria - Published
- 1993
124. UTILIZZO DI UNA POMPA DI CALORE ELIOASSISTITA IN UNA CANTINA DELLA SICILIA OCCIDENTALE
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CARRARA, Michele, MORELLO, Giuseppe, CARRARA, M, and MORELLO, G
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POMPA DI CALORE ELIASSISTITA, CANTINA - Published
- 1991
125. MECCANIZZAZIONE DELLA COLTURA DEL CARCIOFO IN SICILIA
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CARRARA, Michele, MORELLO, Giuseppe, SARCINELLI, S., CARRARA, M, MORELLO, G, and SARCINELLI, S
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Settore AGR/09 - Meccanica Agraria ,MECCANIZZAZIONE, CARCIOFO - Published
- 1991
126. IL FABBISOGNO D'ENERGIA NELLA COLTURA DEL POMODORO
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CARRARA, Michele, MORELLO, Giuseppe, Sarcinelli, S., Carrara, M, MORELLO, G, and Sarcinelli, S
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meccanica agraria ,Settore AGR/09 - Meccanica Agraria - Published
- 1990
127. LA MECCANIZZAZIONE DELLE AREE INTERNE SICILIANE
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MORELLO, Giuseppe, Peri, G, Sarcinelli, S., MORELLO, G, Peri, G, and Sarcinelli, S
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MECCANICA AGRARIA ,MECCAZIZZAZIONE AREE INTERNE SICILIANE ,Settore AGR/09 - Meccanica Agraria - Abstract
INDAGINE SULLA MECCANIZZAZIONE DELLE AREE INTERNE DELLA SICILIA
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- 1990
128. First Release of PLATO Consortium Stellar Limb-darkening Coefficients
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'Morello, Giuseppe
129. A chemical survey of exoplanets with ARIEL
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Tinetti, Giovanna, Drossart, Pierre, Eccleston, Paul, Hartogh, Paul, Heske, Astrid, Leconte, Jérémy, Micela, Giusi, Ollivier, Marc, Pilbratt, Göran, Puig, Ludovic, Turrini, Diego, Vandenbussche, Bart, Wolkenberg, Paulina, Beaulieu, Jean-Philippe, Buchave, Lars A., Ferus, Martin, Griffin, Matt, Guedel, Manuel, Justtanont, Kay, Lagage, Pierre-Olivier, Machado, Pedro, Malaguti, Giuseppe, Min, Michiel, Nørgaard-Nielsen, Hans Ulrik, Rataj, Mirek, Ray, Tom, Ribas, Ignasi, Swain, Mark, Szabo, Robert, Werner, Stephanie, Barstow, Joanna, Burleigh, Matt, Cho, James, Du Foresto, Vincent Coudé, Coustenis, Athena, Decin, Leen, Encrenaz, Therese, Galand, Marina, Gillon, Michael, Helled, Ravit, Morales, Juan Carlos, Muñoz, Antonio García, Moneti, Andrea, Pagano, Isabella, Pascale, Enzo, Piccioni, Giuseppe, Pinfield, David, Sarkar, Subhajit, Selsis, Franck, Tennyson, Jonathan, Triaud, Amaury, Venot, Olivia, Waldmann, Ingo, Waltham, David, Wright, Gillian, Amiaux, Jerome, Auguères, Jean-Louis, Berthé, Michel, Bezawada, Naidu, Bishop, Georgia, Bowles, Neil, Coffey, Deirdre, Colomé, Josep, Crook, Martin, Crouzet, Pierre-Elie, Da Peppo, Vania, Sanz, Isabel Escudero, Focardi, Mauro, Frericks, Martin, Hunt, Tom, Kohley, Ralf, Middleton, Kevin, Morgante, Gianluca, Ottensamer, Roland, Pace, Emanuele, Pearson, Chris, Stamper, Richard, Symonds, Kate, Rengel, Miriam, Renotte, Etienne, Ade, Peter, Affer, Laura, Alard, Christophe, Allard, Nicole, Altieri, Francesca, André, Yves, Arena, Claudio, Argyriou, Ioannis, Aylward, Alan, Baccani, Cristian, Bakos, Gaspar, Banaszkiewicz, Marek, Barlow, Mike, Batista, Virginie, Bellucci, Giancarlo, Benatti, Serena, Bernardi, Pernelle, Bézard, Bruno, Blecka, Maria, Bolmont, Emeline, Bonfond, Bertrand, Bonito, Rosaria, Bonomo, Aldo S., Brucato, John Robert, Brun, Allan Sacha, Bryson, Ian, Bujwan, Waldemar, Casewell, Sarah, Charnay, Bejamin, Pestellini, Cesare Cecchi, Chen, Guo, Ciaravella, Angela, Claudi, Riccardo, Clédassou, Rodolphe, Damasso, Mario, Damiano, Mario, Danielski, Camilla, Deroo, Pieter, Di Giorgio, Anna Maria, Dominik, Carsten, Doublier, Vanessa, Doyle, Simon, Doyon, René, Drummond, Benjamin, Duong, Bastien, Eales, Stephen, Edwards, Billy, Farina, Maria, Flaccomio, Ettore, Fletcher, Leigh, Forget, François, Fossey, Steve, Fränz, Markus, Fujii, Yuka, García-Piquer, Álvaro, Gear, Walter, Geoffray, Hervé, Gérard, Jean Claude, Gesa, Lluis, Gomez, H., Graczyk, Rafał, Griffith, Caitlin, Grodent, Denis, Guarcello, Mario Giuseppe, Gustin, Jacques, Hamano, Keiko, Hargrave, Peter, Hello, Yann, Heng, Kevin, Herrero, Enrique, Hornstrup, Allan, Hubert, Benoit, Ida, Shigeru, Ikoma, Masahiro, Iro, Nicolas, Irwin, Patrick, Jarchow, Christopher, Jaubert, Jean, Jones, Hugh, Julien, Queyrel, Kameda, Shingo, Kerschbaum, Franz, Kervella, Pierre, Koskinen, Tommi, Krijger, Matthijs, Krupp, Norbert, Lafarga, Marina, Landini, Federico, Lellouch, Emanuel, Leto, Giuseppe, Luntzer, A., Rank-Lüftinger, Theresa, Maggio, Antonio, Maldonado, Jesus, Maillard, Jean-Pierre, Mall, Urs, Marquette, Jean-Baptiste, Mathis, Stephane, Maxted, Pierre, Matsuo, Taro, Medvedev, Alexander, Miguel, Yamila, Minier, Vincent, Morello, Giuseppe, Mura, Alessandro, Narita, Norio, Nascimbeni, Valerio, Nguyen Tong, N., Noce, Vladimiro, Oliva, Fabrizio, Palle, Enric, Palmer, Paul, Pancrazzi, Maurizio, Papageorgiou, Andreas, Parmentier, Vivien, Perger, Manuel, Petralia, Antonino, Pezzuto, Stefano, Pierrehumbert, Ray, Pillitteri, Ignazio, Piotto, Giampaolo, Pisano, Giampaolo, Prisinzano, Loredana, Radioti, Aikaterini, Réess, Jean-Michel, Rezac, Ladislav, Rocchetto, Marco, Rosich, Albert, Sanna, Nicoletta, Santerne, Alexandre, Savini, Giorgio, Scandariato, Gaetano, Sicardy, Bruno, Sierra, Carles, Sindoni, Giuseppe, Skup, Konrad, Snellen, Ignas, Sobiecki, Mateusz, Soret, Lauriane, Sozzetti, Alessandro, Stiepen, A., Strugarek, Antoine, Taylor, Jake, Taylor, William, Terenzi, Luca, Tessenyi, Marcell, Tsiaras, Angelos, Tucker, C., Valencia, Diana, Vasisht, Gautam, Vazan, Allona, Vilardell, Francesc, Vinatier, Sabrine, Viti, Serena, Waters, Rens, Wawer, Piotr, Wawrzaszek, Anna, Whitworth, Anthony, Yung, Yuk L., Yurchenko, Sergey N., Osorio, María Rosa Zapatero, Zellem, Robert, Zingales, Tiziano, and Zwart, Frans
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13. Climate action ,530 Physics ,520 Astronomy ,Astrophysics::Earth and Planetary Astrophysics ,500 Science ,7. Clean energy - Abstract
Thousands of exoplanets have now been discovered with a huge range of masses, sizes and orbits: from rocky Earth-like planets to large gas giants grazing the surface of their host star. However, the essential nature of these exoplanets remains largely mysterious: there is no known, discernible pattern linking the presence, size, or orbital parameters of a planet to the nature of its parent star. We have little idea whether the chemistry of a planet is linked to its formation environment, or whether the type of host star drives the physics and chemistry of the planet’s birth, and evolution. ARIEL was conceived to observe a large number (~1000) of transiting planets for statistical understanding, including gas giants, Neptunes, super-Earths and Earth-size planets around a range of host star types using transit spectroscopy in the 1.25–7.8 μm spectral range and multiple narrow-band photometry in the optical. ARIEL will focus on warm and hot planets to take advantage of their well-mixed atmospheres which should show minimal condensation and sequestration of high-Z materials compared to their colder Solar System siblings. Said warm and hot atmospheres are expected to be more representative of the planetary bulk composition. Observations of these warm/hot exoplanets, and in particular of their elemental composition (especially C, O, N, S, Si), will allow the understanding of the early stages of planetary and atmospheric formation during the nebular phase and the following few million years. ARIEL will thus provide a representative picture of the chemical nature of the exoplanets and relate this directly to the type and chemical environment of the host star. ARIEL is designed as a dedicated survey mission for combined-light spectroscopy, capable of observing a large and well-defined planet sample within its 4-year mission lifetime. Transit, eclipse and phase-curve spectroscopy methods, whereby the signal from the star and planet are differentiated using knowledge of the planetary ephemerides, allow us to measure atmospheric signals from the planet at levels of 10–100 part per million (ppm) relative to the star and, given the bright nature of targets, also allows more sophisticated techniques, such as eclipse mapping, to give a deeper insight into the nature of the atmosphere. These types of observations require a stable payload and satellite platform with broad, instantaneous wavelength coverage to detect many molecular species, probe the thermal structure, identify clouds and monitor the stellar activity. The wavelength range proposed covers all the expected major atmospheric gases from e.g. H₂O, CO₂, CH₄ NH₃, HCN, H₂S through to the more exotic metallic compounds, such as TiO, VO, and condensed species. Simulations of ARIEL performance in conducting exoplanet surveys have been performed – using conservative estimates of mission performance and a full model of all significant noise sources in the measurement – using a list of potential ARIEL targets that incorporates the latest available exoplanet statistics. The conclusion at the end of the Phase A study, is that ARIEL – in line with the stated mission objectives – will be able to observe about 1000 exoplanets depending on the details of the adopted survey strategy, thus confirming the feasibility of the main science objectives.
130. Indicador de sostenibilidad para la selección y evaluación de proveedores de servicios de telecomunicaciones de Entel
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Rojas Valdez, Kelly, Cione Morello, Giuseppe, Velarde Quintana, Jesus Michael, Farfan Flores, Lee Rober, Rivera Mayta, Michael Cristian, Rojas Valdez, Kelly, Cione Morello, Giuseppe, Velarde Quintana, Jesus Michael, Farfan Flores, Lee Rober, and Rivera Mayta, Michael Cristian
- Abstract
Las empresas organizadas de más de 500 empleados, con cierto grado de madurez y cultura organizacional, suelen disponer de planes, políticas y normas que le permiten una gestión sostenible dentro de sus propias fronteras. Sin embargo, en el contexto BANI del entorno empresarial, exacerbado por los efectos de la pandemia, han visto como su cadena de suministros se vuelven vulnerables y sin herramientas para responder a una ausencia disruptiva de bienes y servicios. Esta situación se acentúa en empresas de telecomunicaciones donde la demanda del servicio ha crecido de manera exponencial y requieren de una infraestructura amplia y costosa para poder cubrirla. Ante esta situación, las empresas han optado por tener un fuerte soporte de proveedores estratégicos que, siendo PYME, han crecido tecnológicamente y dan una propuesta de valor atractiva, rápida y eficaz. Sin embargo, el crecimiento orgánico de éstas las lleva a desempeñarse bajo un esquema de bajo nivel de cumplimiento en cuanto a aspectos de sostenibilidad, lo cual no es socialmente responsable y sostenible. En consecuencia, en esta consultoría se desarrolló una modelo que permite establecer un indicador de sostenibilidad mediante evaluación del proveedor y su posterior selección bajo los criterios de sostenibilidad planteados en la ISO 20400. Utilizando métodos de toma de decisiones multicriterio (MCDM), permite elegir entre varias alternativas, las que mejor responden a los criterios establecidos, de esta forma se tiene una herramienta que ayuda a definir el desarrollo de las PYME que soportan a las grandes empresas estableciendo los elementos de mayor criticidad y prioridad de atención. Además, que las vuelve más competitivas, innovadoras, y ambiental y socialmente sostenibles. Esta propuesta es viable, deseable, factible y relacionada con los Objetivos de Desarrollo Sostenible (ODS) 8, 9 y 13, favoreciendo al entorno y a la sociedad. Con una inversión de S/. 77.38 k genera un VAN de S/. 248.4 k y un TIR de 3, Organized companies with more than 500 employees, with a certain degree of maturity and organizational culture, usually have plans, policies and standards that allow sustainable management within their own borders. However, in the BANI context of the business environment, exacerbated by the effects of the pandemic, they have seen their supply chain become vulnerable and without tools to respond to a disruptive absence of goods and services. This situation is accentuated in telecommunications companies where the demand for the service has grown exponentially and requires a large and expensive infrastructure to be able to cover it. Faced with this situation, companies have chosen to have strong support from strategic suppliers who, being SMEs, have grown technologically and provide an attractive, fast and effective value proposition. However, their organic growth leads them to perform under a scheme of low level of compliance in terms of sustainability aspects, which is not socially responsible and sustainable. Consequently, in this consultancy a model was developed that allows establishing a sustainability indicator by evaluating the supplier and its subsequent selection under the sustainability criteria established in ISO 20400. Using multi-criteria decision-making methods (MCDM), it allows choosing Among several alternatives, those that best respond to the established criteria, in this way there is a tool that helps define the development of SMEs that support large companies, establishing the elements of greatest criticality and priority of attention. In addition, it makes them more competitive, innovative, and environmentally and socially sustainable. This proposal is viable, desirable, feasible and related to the Sustainable Development Goals (SDGs) 8, 9 and 13, favoring the environment and society. With an investment of S/. 77.38 k it generates a NPV of S/. 248.4k and an IRR of 34% in the worst scenario, as well as a social NPV of US$ 384.4 k.
131. Indicador de sostenibilidad para la selección y evaluación de proveedores de servicios de telecomunicaciones de Entel
- Author
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Rojas Valdez, Kelly, Cione Morello, Giuseppe, Velarde Quintana, Jesus Michael, Farfan Flores, Lee Rober, Rivera Mayta, Michael Cristian, Rojas Valdez, Kelly, Cione Morello, Giuseppe, Velarde Quintana, Jesus Michael, Farfan Flores, Lee Rober, and Rivera Mayta, Michael Cristian
- Abstract
Las empresas organizadas de más de 500 empleados, con cierto grado de madurez y cultura organizacional, suelen disponer de planes, políticas y normas que le permiten una gestión sostenible dentro de sus propias fronteras. Sin embargo, en el contexto BANI del entorno empresarial, exacerbado por los efectos de la pandemia, han visto como su cadena de suministros se vuelven vulnerables y sin herramientas para responder a una ausencia disruptiva de bienes y servicios. Esta situación se acentúa en empresas de telecomunicaciones donde la demanda del servicio ha crecido de manera exponencial y requieren de una infraestructura amplia y costosa para poder cubrirla. Ante esta situación, las empresas han optado por tener un fuerte soporte de proveedores estratégicos que, siendo PYME, han crecido tecnológicamente y dan una propuesta de valor atractiva, rápida y eficaz. Sin embargo, el crecimiento orgánico de éstas las lleva a desempeñarse bajo un esquema de bajo nivel de cumplimiento en cuanto a aspectos de sostenibilidad, lo cual no es socialmente responsable y sostenible. En consecuencia, en esta consultoría se desarrolló una modelo que permite establecer un indicador de sostenibilidad mediante evaluación del proveedor y su posterior selección bajo los criterios de sostenibilidad planteados en la ISO 20400. Utilizando métodos de toma de decisiones multicriterio (MCDM), permite elegir entre varias alternativas, las que mejor responden a los criterios establecidos, de esta forma se tiene una herramienta que ayuda a definir el desarrollo de las PYME que soportan a las grandes empresas estableciendo los elementos de mayor criticidad y prioridad de atención. Además, que las vuelve más competitivas, innovadoras, y ambiental y socialmente sostenibles. Esta propuesta es viable, deseable, factible y relacionada con los Objetivos de Desarrollo Sostenible (ODS) 8, 9 y 13, favoreciendo al entorno y a la sociedad. Con una inversión de S/. 77.38 k genera un VAN de S/. 248.4 k y un TIR de 3, Organized companies with more than 500 employees, with a certain degree of maturity and organizational culture, usually have plans, policies and standards that allow sustainable management within their own borders. However, in the BANI context of the business environment, exacerbated by the effects of the pandemic, they have seen their supply chain become vulnerable and without tools to respond to a disruptive absence of goods and services. This situation is accentuated in telecommunications companies where the demand for the service has grown exponentially and requires a large and expensive infrastructure to be able to cover it. Faced with this situation, companies have chosen to have strong support from strategic suppliers who, being SMEs, have grown technologically and provide an attractive, fast and effective value proposition. However, their organic growth leads them to perform under a scheme of low level of compliance in terms of sustainability aspects, which is not socially responsible and sustainable. Consequently, in this consultancy a model was developed that allows establishing a sustainability indicator by evaluating the supplier and its subsequent selection under the sustainability criteria established in ISO 20400. Using multi-criteria decision-making methods (MCDM), it allows choosing Among several alternatives, those that best respond to the established criteria, in this way there is a tool that helps define the development of SMEs that support large companies, establishing the elements of greatest criticality and priority of attention. In addition, it makes them more competitive, innovative, and environmentally and socially sustainable. This proposal is viable, desirable, feasible and related to the Sustainable Development Goals (SDGs) 8, 9 and 13, favoring the environment and society. With an investment of S/. 77.38 k it generates a NPV of S/. 248.4k and an IRR of 34% in the worst scenario, as well as a social NPV of US$ 384.4 k.
132. Indicador de sostenibilidad para la selección y evaluación de proveedores de servicios de telecomunicaciones de Entel
- Author
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Rojas Valdez, Kelly, Cione Morello, Giuseppe, Velarde Quintana, Jesus Michael, Farfan Flores, Lee Rober, Rivera Mayta, Michael Cristian, Rojas Valdez, Kelly, Cione Morello, Giuseppe, Velarde Quintana, Jesus Michael, Farfan Flores, Lee Rober, and Rivera Mayta, Michael Cristian
- Abstract
Las empresas organizadas de más de 500 empleados, con cierto grado de madurez y cultura organizacional, suelen disponer de planes, políticas y normas que le permiten una gestión sostenible dentro de sus propias fronteras. Sin embargo, en el contexto BANI del entorno empresarial, exacerbado por los efectos de la pandemia, han visto como su cadena de suministros se vuelven vulnerables y sin herramientas para responder a una ausencia disruptiva de bienes y servicios. Esta situación se acentúa en empresas de telecomunicaciones donde la demanda del servicio ha crecido de manera exponencial y requieren de una infraestructura amplia y costosa para poder cubrirla. Ante esta situación, las empresas han optado por tener un fuerte soporte de proveedores estratégicos que, siendo PYME, han crecido tecnológicamente y dan una propuesta de valor atractiva, rápida y eficaz. Sin embargo, el crecimiento orgánico de éstas las lleva a desempeñarse bajo un esquema de bajo nivel de cumplimiento en cuanto a aspectos de sostenibilidad, lo cual no es socialmente responsable y sostenible. En consecuencia, en esta consultoría se desarrolló una modelo que permite establecer un indicador de sostenibilidad mediante evaluación del proveedor y su posterior selección bajo los criterios de sostenibilidad planteados en la ISO 20400. Utilizando métodos de toma de decisiones multicriterio (MCDM), permite elegir entre varias alternativas, las que mejor responden a los criterios establecidos, de esta forma se tiene una herramienta que ayuda a definir el desarrollo de las PYME que soportan a las grandes empresas estableciendo los elementos de mayor criticidad y prioridad de atención. Además, que las vuelve más competitivas, innovadoras, y ambiental y socialmente sostenibles. Esta propuesta es viable, deseable, factible y relacionada con los Objetivos de Desarrollo Sostenible (ODS) 8, 9 y 13, favoreciendo al entorno y a la sociedad. Con una inversión de S/. 77.38 k genera un VAN de S/. 248.4 k y un TIR de 3, Organized companies with more than 500 employees, with a certain degree of maturity and organizational culture, usually have plans, policies and standards that allow sustainable management within their own borders. However, in the BANI context of the business environment, exacerbated by the effects of the pandemic, they have seen their supply chain become vulnerable and without tools to respond to a disruptive absence of goods and services. This situation is accentuated in telecommunications companies where the demand for the service has grown exponentially and requires a large and expensive infrastructure to be able to cover it. Faced with this situation, companies have chosen to have strong support from strategic suppliers who, being SMEs, have grown technologically and provide an attractive, fast and effective value proposition. However, their organic growth leads them to perform under a scheme of low level of compliance in terms of sustainability aspects, which is not socially responsible and sustainable. Consequently, in this consultancy a model was developed that allows establishing a sustainability indicator by evaluating the supplier and its subsequent selection under the sustainability criteria established in ISO 20400. Using multi-criteria decision-making methods (MCDM), it allows choosing Among several alternatives, those that best respond to the established criteria, in this way there is a tool that helps define the development of SMEs that support large companies, establishing the elements of greatest criticality and priority of attention. In addition, it makes them more competitive, innovative, and environmentally and socially sustainable. This proposal is viable, desirable, feasible and related to the Sustainable Development Goals (SDGs) 8, 9 and 13, favoring the environment and society. With an investment of S/. 77.38 k it generates a NPV of S/. 248.4k and an IRR of 34% in the worst scenario, as well as a social NPV of US$ 384.4 k.
133. Identification of carbon dioxide in an exoplanet atmosphere
- Author
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Ahrer, Eva-Maria, Alderson, Lili, Batalha, Natalie M., Batalha, Natasha E., Bean, Jacob L., Beatty, Thomas G., Bell, Taylor J., Benneke, Björn, Berta-Thompson, Zachory K., Carter, Aarynn L., Crossfield, Ian J. M., Espinoza, Néstor, Feinstein, Adina D., Fortney, Jonathan J., Gibson, Neale P., Goyal, Jayesh M., Kempton, Eliza M.-R., Kirk, James, Kreidberg, Laura, López-Morales, Mercedes, Line, Michael R., Lothringer, Joshua D., Moran, Sarah E., Mukherjee, Sagnick, Ohno, Kazumasa, Parmentier, Vivien, Piaulet, Caroline, Rustamkulov, Zafar, Schlawin, Everett, Sing, David K., Stevenson, Kevin B., Wakeford, Hannah R., Allen, Natalie H., Birkmann, Stephan M., Brande, Jonathan, Crouzet, Nicolas, Cubillos, Patricio E., Damiano, Mario, Désert, Jean-Michel, Gao, Peter, Harrington, Joseph, Hu, Renyu, Kendrew, Sarah, Knutson, Heather A., Lagage, Pierre-Olivier, Leconte, Jérémy, Lendl, Monika, MacDonald, Ryan J., May, E. M., Miguel, Yamila, Molaverdikhani, Karan, Moses, Julianne I., Murray, Catriona Anne, Nehring, Molly, Nikolov, Nikolay K., Petit dit de la Roche, D. J. M., Radica, Michael, Roy, Pierre-Alexis, Stassun, Keivan G., Taylor, Jake, Waalkes, William C., Wachiraphan, Patcharapol, Welbanks, Luis, Wheatley, Peter J., Aggarwal, Keshav, Alam, Munazza K., Banerjee, Agnibha, Barstow, Joanna K., Blecic, Jasmina, Casewell, S. L., Changeat, Quentin, Chubb, K. L., Colón, Knicole D., Coulombe, Louis-Philippe, Daylan, Tansu, de Val-Borro, Miguel, Decin, Leen, Dos Santos, Leonardo A., Flagg, Laura, France, Kevin, Fu, Guangwei, García Muñoz, A., Gizis, John E., Glidden, Ana, Grant, David, Heng, Kevin, Henning, Thomas, Hong, Yu-Cian, Inglis, Julie, Iro, Nicolas, Kataria, Tiffany, Komacek, Thaddeus D., Krick, Jessica E., Lee, Elspeth K. H., Lewis, Nikole K., Lillo-Box, Jorge, Lustig-Yaeger, Jacob, Mancini, Luigi, Mandell, Avi M., Mansfield, Megan, Marley, Mark S., Mikal-Evans, Thomas, Morello, Giuseppe, Nixon, Matthew C., Ortiz Ceballos, Kevin, Piette, Anjali A. A., Powell, Diana, Rackham, Benjamin V., Ramos-Rosado, Lakeisha, Rauscher, Emily, Redfield, Seth, Rogers, Laura K., Roman, Michael T., Roudier, Gael M., Scarsdale, Nicholas, Shkolnik, Evgenya L., Southworth, John, Spake, Jessica J., Steinrueck, Maria E., Tan, Xianyu, Teske, Johanna K., Tremblin, Pascal, Tsai, Shang-Min, Tucker, Gregory S., Turner, Jake D., Valenti, Jeff A., Venot, Olivia, Waldmann, Ingo P., Wallack, Nicole L., Zhang, Xi, Zieba, Sebastian, Ahrer, Eva-Maria, Alderson, Lili, Batalha, Natalie M., Batalha, Natasha E., Bean, Jacob L., Beatty, Thomas G., Bell, Taylor J., Benneke, Björn, Berta-Thompson, Zachory K., Carter, Aarynn L., Crossfield, Ian J. M., Espinoza, Néstor, Feinstein, Adina D., Fortney, Jonathan J., Gibson, Neale P., Goyal, Jayesh M., Kempton, Eliza M.-R., Kirk, James, Kreidberg, Laura, López-Morales, Mercedes, Line, Michael R., Lothringer, Joshua D., Moran, Sarah E., Mukherjee, Sagnick, Ohno, Kazumasa, Parmentier, Vivien, Piaulet, Caroline, Rustamkulov, Zafar, Schlawin, Everett, Sing, David K., Stevenson, Kevin B., Wakeford, Hannah R., Allen, Natalie H., Birkmann, Stephan M., Brande, Jonathan, Crouzet, Nicolas, Cubillos, Patricio E., Damiano, Mario, Désert, Jean-Michel, Gao, Peter, Harrington, Joseph, Hu, Renyu, Kendrew, Sarah, Knutson, Heather A., Lagage, Pierre-Olivier, Leconte, Jérémy, Lendl, Monika, MacDonald, Ryan J., May, E. M., Miguel, Yamila, Molaverdikhani, Karan, Moses, Julianne I., Murray, Catriona Anne, Nehring, Molly, Nikolov, Nikolay K., Petit dit de la Roche, D. J. M., Radica, Michael, Roy, Pierre-Alexis, Stassun, Keivan G., Taylor, Jake, Waalkes, William C., Wachiraphan, Patcharapol, Welbanks, Luis, Wheatley, Peter J., Aggarwal, Keshav, Alam, Munazza K., Banerjee, Agnibha, Barstow, Joanna K., Blecic, Jasmina, Casewell, S. L., Changeat, Quentin, Chubb, K. L., Colón, Knicole D., Coulombe, Louis-Philippe, Daylan, Tansu, de Val-Borro, Miguel, Decin, Leen, Dos Santos, Leonardo A., Flagg, Laura, France, Kevin, Fu, Guangwei, García Muñoz, A., Gizis, John E., Glidden, Ana, Grant, David, Heng, Kevin, Henning, Thomas, Hong, Yu-Cian, Inglis, Julie, Iro, Nicolas, Kataria, Tiffany, Komacek, Thaddeus D., Krick, Jessica E., Lee, Elspeth K. H., Lewis, Nikole K., Lillo-Box, Jorge, Lustig-Yaeger, Jacob, Mancini, Luigi, Mandell, Avi M., Mansfield, Megan, Marley, Mark S., Mikal-Evans, Thomas, Morello, Giuseppe, Nixon, Matthew C., Ortiz Ceballos, Kevin, Piette, Anjali A. A., Powell, Diana, Rackham, Benjamin V., Ramos-Rosado, Lakeisha, Rauscher, Emily, Redfield, Seth, Rogers, Laura K., Roman, Michael T., Roudier, Gael M., Scarsdale, Nicholas, Shkolnik, Evgenya L., Southworth, John, Spake, Jessica J., Steinrueck, Maria E., Tan, Xianyu, Teske, Johanna K., Tremblin, Pascal, Tsai, Shang-Min, Tucker, Gregory S., Turner, Jake D., Valenti, Jeff A., Venot, Olivia, Waldmann, Ingo P., Wallack, Nicole L., Zhang, Xi, and Zieba, Sebastian
- Abstract
Carbon dioxide (CO2) is a key chemical species that is found in a wide range of planetary atmospheres. In the context of exoplanets, CO2 is an indicator of the metal enrichment (that is, elements heavier than helium, also called ‘metallicity’), and thus the formation processes of the primary atmospheres of hot gas giants. It is also one of the most promising species to detect in the secondary atmospheres of terrestrial exoplanets. Previous photometric measurements of transiting planets with the Spitzer Space Telescope have given hints of the presence of CO2, but have not yielded definitive detections owing to the lack of unambiguous spectroscopic identification. Here we present the detection of CO2 in the atmosphere of the gas giant exoplanet WASP-39b from transmission spectroscopy observations obtained with JWST as part of the Early Release Science programme. The data used in this study span 3.0–5.5 micrometres in wavelength and show a prominent CO2 absorption feature at 4.3 micrometres (26-sigma significance). The overall spectrum is well matched by one-dimensional, ten-times solar metallicity models that assume radiative–convective–thermochemical equilibrium and have moderate cloud opacity. These models predict that the atmosphere should have water, carbon monoxide and hydrogen sulfide in addition to CO2, but little methane. Furthermore, we also tentatively detect a small absorption feature near 4.0 micrometres that is not reproduced by these models.
134. Influence of grape transport and destemming systems on the quality of Chardonnay wines.
- Author
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Catania, Pietro, De Pasquale, Claudio, Morello, Giuseppe, and Vallone, Mariangela
- Subjects
- *
GRAPES , *CHARDONNAY , *FRUIT transportation , *WINES , *QUALITY - Abstract
The winemaking technology plays a very important role in enology as it directly influences the characteristics of wine. In particular, grape transport and destemming are critical steps in winemaking for the wine quality. The aim of this study was to compare two different processing lines of Chardonnay grapes to evaluate their effects on the quality of the final product. In particular, grapes receiving, transporting and destemming were performed using different machines in order to evaluate their influence on the quality of Chardonnay wines. The use of a receiving hopper equipped with a belt conveyor, followed by a destemmer equipped with partially coated rubber beaters, allowed to obtain Chardonnay wines of overall higher quality than using a receiving hopper equipped with a screw conveyor, followed by a destemmer equipped with steel beaters. The results were supported by chemical analyses on musts and wines and by the sensory analysis of the wines. [ABSTRACT FROM AUTHOR]
- Published
- 2016
135. Positioning Accuracy Comparison of GNSS Receivers Used for Mapping and Guidance of Agricultural Machines
- Author
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Pietro Catania, Santo Orlando, Antonio Comparetti, Eliseo Roma, Mariangela Vallone, Pierluigi Febo, Giuseppe Morello, Catania, Pietro, Comparetti, Antonio, Febo, Pierluigi, Morello, Giuseppe, Orlando, Santo, Roma, Eliseo, and Vallone, Mariangela
- Subjects
Computer science ,RTK ,GPS ,Real-time computing ,Kinematics ,01 natural sciences ,antenna ,lcsh:Agriculture ,differential correction ,precision agriculture ,business.industry ,010401 analytical chemistry ,lcsh:S ,Settore AGR/09 - Meccanica Agraria ,04 agricultural and veterinary sciences ,GIS ,GLONASS ,0104 chemical sciences ,GNSS applications ,040103 agronomy & agriculture ,Trajectory ,Global Positioning System ,0401 agriculture, forestry, and fisheries ,Satellite ,Precision agriculture ,Antenna (radio) ,business ,Agronomy and Crop Science - Abstract
Global Navigation Satellite Systems (GNSS) allow the determination of the 3D position of a point on the Earth&rsquo, s surface by measuring the distance from the receiver antenna to the orbital position of at least four satellites. Selecting and buying a GNSS receiver, depending on farm needs, is the first step for implementing precision agriculture. The aim of this work is to compare the positioning accuracy of four GNSS receivers, different for technical features and working modes: L1/L2 frequency survey-grade Real-Time Kinematic (RTK)-capable Stonex S7-G (S7), L1 frequency RTK-capable Stonex S5 (S5), L1 frequency Thales MobileMapper Pro (TMMP), low-cost L1 frequency Quanum GPS Logger V2 (QLV2). In order to evaluate the positioning accuracy of these receivers, i.e., the distance of the determined points from a reference trajectory, different tests, distinguished by the use or not of Real-Time Kinematic (RTK) differential correction data and/or an external antenna, were carried out. The results show that all satellite receivers tested carried out with the external antenna had an improvement in positioning accuracy. The Thales MobileMapper Pro satellite receiver showed the worst positioning accuracy. The low-cost Quanum GPS Logger V2 receiver surprisingly showed an average positioning error of only 0.550 m. The positioning accuracy of the above-mentioned receiver was slightly worse than that obtained using Stonex S7-G without the external antenna and differential correction (maximum positioning error 0.749 m). However, this accuracy was even better than that recorded using Stonex S5 without differential correction, both with and without the external antenna (average positioning error of 0.962 m and 1.368 m).
- Published
- 2020
- Full Text
- View/download PDF
136. Early Release Science of the exoplanet WASP-39b with JWST NIRCam.
- Author
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Ahrer EM, Stevenson KB, Mansfield M, Moran SE, Brande J, Morello G, Murray CA, Nikolov NK, Petit Dit de la Roche DJM, Schlawin E, Wheatley PJ, Zieba S, Batalha NE, Damiano M, Goyal JM, Lendl M, Lothringer JD, Mukherjee S, Ohno K, Batalha NM, Battley MP, Bean JL, Beatty TG, Benneke B, Berta-Thompson ZK, Carter AL, Cubillos PE, Daylan T, Espinoza N, Gao P, Gibson NP, Gill S, Harrington J, Hu R, Kreidberg L, Lewis NK, Line MR, López-Morales M, Parmentier V, Powell DK, Sing DK, Tsai SM, Wakeford HR, Welbanks L, Alam MK, Alderson L, Allen NH, Anderson DR, Barstow JK, Bayliss D, Bell TJ, Blecic J, Bryant EM, Burleigh MR, Carone L, Casewell SL, Changeat Q, Chubb KL, Crossfield IJM, Crouzet N, Decin L, Désert JM, Feinstein AD, Flagg L, Fortney JJ, Gizis JE, Heng K, Iro N, Kempton EM, Kendrew S, Kirk J, Knutson HA, Komacek TD, Lagage PO, Leconte J, Lustig-Yaeger J, MacDonald RJ, Mancini L, May EM, Mayne NJ, Miguel Y, Mikal-Evans T, Molaverdikhani K, Palle E, Piaulet C, Rackham BV, Redfield S, Rogers LK, Roy PA, Rustamkulov Z, Shkolnik EL, Sotzen KS, Taylor J, Tremblin P, Tucker GS, Turner JD, de Val-Borro M, Venot O, and Zhang X
- Abstract
Measuring the metallicity and carbon-to-oxygen (C/O) ratio in exoplanet atmospheres is a fundamental step towards constraining the dominant chemical processes at work and, if in equilibrium, revealing planet formation histories. Transmission spectroscopy (for example, refs.
1,2 ) provides the necessary means by constraining the abundances of oxygen- and carbon-bearing species; however, this requires broad wavelength coverage, moderate spectral resolution and high precision, which, together, are not achievable with previous observatories. Now that JWST has commenced science operations, we are able to observe exoplanets at previously uncharted wavelengths and spectral resolutions. Here we report time-series observations of the transiting exoplanet WASP-39b using JWST's Near InfraRed Camera (NIRCam). The long-wavelength spectroscopic and short-wavelength photometric light curves span 2.0-4.0 micrometres, exhibit minimal systematics and reveal well defined molecular absorption features in the planet's spectrum. Specifically, we detect gaseous water in the atmosphere and place an upper limit on the abundance of methane. The otherwise prominent carbon dioxide feature at 2.8 micrometres is largely masked by water. The best-fit chemical equilibrium models favour an atmospheric metallicity of 1-100-times solar (that is, an enrichment of elements heavier than helium relative to the Sun) and a substellar C/O ratio. The inferred high metallicity and low C/O ratio may indicate significant accretion of solid materials during planet formation (for example, refs.3,4 , ) or disequilibrium processes in the upper atmosphere (for example, refs.5,6 )., (© 2023. The Author(s).)- Published
- 2023
- Full Text
- View/download PDF
137. Early Release Science of the exoplanet WASP-39b with JWST NIRSpec G395H.
- Author
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Alderson L, Wakeford HR, Alam MK, Batalha NE, Lothringer JD, Adams Redai J, Barat S, Brande J, Damiano M, Daylan T, Espinoza N, Flagg L, Goyal JM, Grant D, Hu R, Inglis J, Lee EKH, Mikal-Evans T, Ramos-Rosado L, Roy PA, Wallack NL, Batalha NM, Bean JL, Benneke B, Berta-Thompson ZK, Carter AL, Changeat Q, Colón KD, Crossfield IJM, Désert JM, Foreman-Mackey D, Gibson NP, Kreidberg L, Line MR, López-Morales M, Molaverdikhani K, Moran SE, Morello G, Moses JI, Mukherjee S, Schlawin E, Sing DK, Stevenson KB, Taylor J, Aggarwal K, Ahrer EM, Allen NH, Barstow JK, Bell TJ, Blecic J, Casewell SL, Chubb KL, Crouzet N, Cubillos PE, Decin L, Feinstein AD, Fortney JJ, Harrington J, Heng K, Iro N, Kempton EM, Kirk J, Knutson HA, Krick J, Leconte J, Lendl M, MacDonald RJ, Mancini L, Mansfield M, May EM, Mayne NJ, Miguel Y, Nikolov NK, Ohno K, Palle E, Parmentier V, Petit Dit de la Roche DJM, Piaulet C, Powell D, Rackham BV, Redfield S, Rogers LK, Rustamkulov Z, Tan X, Tremblin P, Tsai SM, Turner JD, de Val-Borro M, Venot O, Welbanks L, Wheatley PJ, and Zhang X
- Abstract
Measuring the abundances of carbon and oxygen in exoplanet atmospheres is considered a crucial avenue for unlocking the formation and evolution of exoplanetary systems
1,2 . Access to the chemical inventory of an exoplanet requires high-precision observations, often inferred from individual molecular detections with low-resolution space-based3-5 and high-resolution ground-based6-8 facilities. Here we report the medium-resolution (R ≈ 600) transmission spectrum of an exoplanet atmosphere between 3 and 5 μm covering several absorption features for the Saturn-mass exoplanet WASP-39b (ref.9 ), obtained with the Near Infrared Spectrograph (NIRSpec) G395H grating of JWST. Our observations achieve 1.46 times photon precision, providing an average transit depth uncertainty of 221 ppm per spectroscopic bin, and present minimal impacts from systematic effects. We detect significant absorption from CO2 (28.5σ) and H2 O (21.5σ), and identify SO2 as the source of absorption at 4.1 μm (4.8σ). Best-fit atmospheric models range between 3 and 10 times solar metallicity, with sub-solar to solar C/O ratios. These results, including the detection of SO2 , underscore the importance of characterizing the chemistry in exoplanet atmospheres and showcase NIRSpec G395H as an excellent mode for time-series observations over this critical wavelength range10 ., (© 2023. The Author(s).)- Published
- 2023
- Full Text
- View/download PDF
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