641 research outputs found
Il veicolo a due ruote nell'immaginario letterario italiano del XX secolo
No full textParlare dell'influenza dei mezzi di trasporto moderni, e in particolare della motocicletta, nella letteratura italiana permette di aprire nuove prospettive di studio, perché oggi ci si confronta giornalmente con veicoli potenti e tecnologicamente sempre più avanzati. In ambito culturale gli intellettuali riconoscono al veicolo a due ruote un ruolo importante per descrivere la società. Attraverso la motocicletta l'individuo avverte in sé una nuova forza che lo porta a sperimentare l'ansia d'infinito. Egli si sente un nuovo centauro che ha assunto in sé le medesime caratteristiche di forza e velocità del suo mezzo meccanico. Nei secoli passati il veicolo più usato era il cavallo, nell'era di navi, treni e aerei il mezzo che più gli si avvicina è la moto, non solo per la postura del cavaliere, ma perché essa lascia il pilota a contatto con il paesaggio esterno, con i vari fenomeni atmosferici (pioggia, sole e vento) e con i profumi della natura. Se in passato il moto del cavallo poteva diventare il pretesto per esprimere determinati processi narrativi, nel Novecento tale compito è affidato alla motocicletta che cha finito per condizionare il modo di vivere e di pensare degli uomini del XX secolo.Speaking about the influence of modern means of transport (in particular about the motorcycle) in literature, fixes a new way of studying culture, because today we have to cope with more and more powerful and technologically advanced vehicles. Intellectuals acknowledge motorcycles an important role to describing society. Thanks to the motorcycle man exploits a new strength that enables him to overcome his limits. He feels a sort of divinity embodying the same peculiarities as his vehicle. In the past the horse was the most widespread means of transport while today, in an age of airplanes, ships and trains, it has been replaced by the motorcycle, both for the rider's posture and for his contact with the environment and its expressions: rain, sun and wind as well as the perfumes of the Earth. Just like the horse's motion was in the past a way to express narrative processes, the motorcycle has inherited this task today, therefore conditioning the contemporary way of living and thinking
Cʼè o ci fa? Duemilacinquecento anni tra finzione, esaltazione e (auto)distruzione
No full textBreve trattazione saggistica del tema "teatro e follia" nella tradizione drammatica e scenica tedescaA brief survey on "theatre and madness" in German drama and performance histor
A new Low Gain Avalanche Diode concept: the double-LGAD
No full textThis paper describes the new concept of the double LGAD (low-gain avalanche diodes). The goal was to increase the charge at the input of the electronics, keeping a time resolution equal to or better than a standard (single) LGAD; this has been realized by adding the charges of two coupled LGADs while still using a single front-end electronics. The study here reported has been done starting from single LGAD with a thickness of 25 µm, 35 µm and 50 µm.This paper describes the new concept of the double-LGAD. The goal is to increase the charge at the input of the electronics, keeping a time resolution equal or better than a standard (single) LGAD; this has been realized by adding the charges of two coupled LGADs while still using a single front-end electronics. The study here reported has been done starting from single LGAD with a thickness of 25 µm, 35 µm and 50 µm
Catalytic Effect Of Metallic Additives On In-situ Combustion Of Two Brazilian Medium And Heavy Oils
No full textIncreasing the final recovery factor from mature fields is a major challenge to meet the growing energy demand in the coming years. The in-situ combustion, an important thermal enhanced oil recovery method, has experienced an increasing interest as an alternative solution to this challenge. In-situ combustion is the process of injecting oxygen into oil reservoirs where a portion of oil is burned and heat is in-situ generated. As consequence the oil viscosity decreases resulting in larger oil recovery factor. The propensity of the reservoir oil to form fuel is a major constraint limiting the applicability of the in-situ combustion. In lighter oil reservoirs insufficient fuel may be deposited resulting in a combustion front that cannot be self-sustained. Contrariwise, in heavier oil reservoirs excessive fuel may be deposited leading to high air injection. Metallic salts are known to play an important role as a catalyst and thereby affect the amount of fuel formed. This paper describes an experimental study with eight combustion tube runs to evaluate the effects of metallic additives in the combustion of two Brazilian medium and heavy oils. The oils are 12.8° and 27.2° API, respectively from an onshore field in Espirito Santos Basin and an offshore field in Santos Basin. The metallic additives are iron nitrate and zinc nitrate. Results for the heavy oil show that a self-sustained front combustion can be obtained only with the presence of clay, due to its catalytic effect. The addition of iron nitrate increased the fuel concentration while increasing the air requirement and reducing the combustion front velocity. The addition of zinc nitrate also increased the fuel concentration and increased the air requirement and reduced the combustion front velocity. Interesting results were observed for the medium oil: a self-sustained combustion was not achieved only with the presence of clay, but stable and sustained combustions were observed with the addition of iron and zinc nitrates. Iron and zinc salts are metallic additives with potential to expand the range of candidate reservoirs for in-situ combustion. Further studies are necessary to evaluate potential additives to act as fuel reducing agent. Copyright 2014, Society of Petroleum Engineers.210791104Chevron,Halliburton,PDVSA,Schlumberger,TotaAkkutlu, I.Y., Yortsos, Y.C., Dual-role of water-soluble metallic additives on modifying in-situ combustion performance using large activation energy asymptotics (2008) 2008 SPE Annual Technical Conference and Exhibition, , SPE 115506, paper presented at the, held in Denver, Colorado, USA, 21-24 SeptemberAlboudwarej, H., Felix, J., Taylor, S., Highlightining heavy oil (2006) Oilfield Review, pp. 34-53. , JuneCastanier, L.M., Baena, C.J., Holt, R.J., Brigham, W.E., In-situ combustion with metallic additives (1992) SPE Second Latin America Petroleum Engineering Conference, , SPE 23708 presented at, II LACEC held in Caracas, Venezuela, 8-11 MarchGerritsen, M., Kovscek, A., Castanier, L., Nilsson, J., Yonis, R., He, B., Experimental investigation and high resolution simulator of in-situ combustion processes1. Simulator design and improved combustion with metallic additives (2004) SPE International Thermal Operations and Heavy Oil Symposium and Western Regional Meeting, , SPE 86962 presented at the, held in Bakersfield, California, 16-18 MarchChicuta, A.M., (2009) Estudo Experimental Sobre A Recuperaçào de Oleo Pesado Através da Combustäo In-Situ, , Dissetaçào de Mestrado em Ciência e Engenharia de Petróleo, Faculdade de Engenharia Mecânica, UNICAMP, CampinasChicuta, A.M., Trevisan, O.V., Experimental study on in-situ combustion of brazilian heavy oil (2009) 2009 SPE Latin American and Caribbean Petroleun Engineering Conference, , SPE 122036, paper presented at the, held in Cartagena, Colombia, 31 May-3-JuneCristofari, J., Castanier, L., Kovscek, (2008) Laboratory Investigation of the Effect of Solvent Injection on In-situ Combustion, , SPE 99752, JuneGonçalves, L.I.B., (2010) Estudo Experimental da Combustäo Molhada Na Recuperaçào de Óleo Pesado, p. 154. , Campinas, Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, Dissertaçào de MestradoGonçalves, L.I.B., Trevisan, O.V., (2009) Numerical Simulation of Combustion Lab Experiments on Wet Forward Combustion, , COB09-0302He, B., Chen, Q., Castanier, L., Kovscek, A., Improved in-situ combustion performance with metallic salt additives (2005) 2005 SPE Western Regional Meeting, , SPE 93901, presented at the, held in Irvine, CA, USA, 30 March - 1 AprilHolt, R.J., In-situ combustion with metallic additives (1992) SUPRI TR, 87. , Stanford UniversityKooper, R., Curtis, C., Decoster, E., Garcia, A.G., Huggins, C., Heavy-oil reservoirs (2002) Oilfield Review, (30), pp. 30-52Moritis, G., Biennial EOR production report-california steam eor produces less, other EOR continues (2002) Oil and Gas Journal (Apr. 15), p. 72Shallcross, D.C., De Los Rios, C.F., Castanier, L.M., Brigham, W.E., Modifying in-situ combustion performance by the use of water-soluble metallic additives (1989) SPE AIME Aisa-Pacific Conference, , SPE 19485, paper presented at the, Sydney, Australia, and September 13-1
Study and development of new silicon technologies for the ALICE 3 Time-Of-Flight detector
No full textIn preparation for the future ALICE 3 experiment proposed to be installed at the LHC at CERN in 2036, an extensive R&D program is actively addressing the challenge of developing a 20-picosecond technology for the Time-Of-Flight (TOF) detector. Various silicon technologies are under investigation to achieve this goal. Among those, Low Gain Avalanche Detectors (LGADs) constitute a promising solution. In this thesis, comprehensive R&D efforts focused on state-of-the-art LGADs are presented. A wide range of LGADs, both single-channel sensors and matrices, including different thicknesses, areas, doping and inter-pad design have been fully characterized with laboratory measurements and studied first with a laser setup and subsequently using particle beams at CERN facilities. First tests of 25 μm and 35 μm LGADs compared to 50 μm-thick sensors highlighted the potential of a thinner design for improved time resolution. This prompted further investigations into progressively thinner sensors, arriving to test the first 15 μm-thick LGADs ever produced by FBK. Additionally, the innovative double-LGAD concept was introduced to address the challenge of small input signals in the electronics. Notably, this new concept not only yields the significant benefit of an enhancement of the charge at the input of electronics which allows for reduced power consumption, but also translates into an improvement in overall time resolution. Finally, a dedicated study has been performed to determine the impact of particle incidence angles on the time resolution, a crucial aspect to be taken into account in the ALICE 3 experiment. Overall, this R&D campaign on LGAD detectors, finally resulted in sensors that meet the time resolution requirements of ALICE 3 Time-Of-Flight detector, establishing them also as strong candidates for future-generation experiments
The Motorcycle in the 20th Century Italian Literature Imagery
No full textParlare dell'influenza dei mezzi di trasporto moderni, e in particolare della motocicletta, nella letteratura italiana permette di aprire nuove prospettive di studio, perché oggi ci si confronta giornalmente con veicoli potenti e tecnologicamente sempre più avanzati. In ambito culturale gli intellettuali riconoscono al veicolo a due ruote un ruolo importante per descrivere la società. Attraverso la motocicletta l'individuo avverte in sé una nuova forza che lo porta a sperimentare l'ansia d'infinito. Egli si sente un nuovo centauro che ha assunto in sé le medesime caratteristiche di forza e velocità del suo mezzo meccanico. Nei secoli passati il veicolo più usato era il cavallo, nell'era di navi, treni e aerei il mezzo che più gli si avvicina è la moto, non solo per la postura del cavaliere, ma perché essa lascia il pilota a contatto con il paesaggio esterno, con i vari fenomeni atmosferici (pioggia, sole e vento) e con i profumi della natura. Se in passato il moto del cavallo poteva diventare il pretesto per esprimere determinati processi narrativi, nel Novecento tale compito è affidato alla motocicletta che cha finito per condizionare il modo di vivere e di pensare degli uomini del XX secolo.Speaking about the influence of modern means of transport (in particular about the motorcycle) in literature, fixes a new way of studying culture, because today we have to cope with more and more powerful and technologically advanced vehicles. Intellectuals acknowledge motorcycles an important role to describing society. Thanks to the motorcycle man exploits a new strength that enables him to overcome his limits. He feels a sort of divinity embodying the same peculiarities as his vehicle. In the past the horse was the most widespread means of transport while today, in an age of airplanes, ships and trains, it has been replaced by the motorcycle, both for the rider's posture and for his contact with the environment and its expressions: rain, sun and wind as well as the perfumes of the Earth. Just like the horse's motion was in the past a way to express narrative processes, the motorcycle has inherited this task today, therefore conditioning the contemporary way of living and thinking
15 years young: The ALICE TOF detector in the LHC Run 3
No full textThe ALICE Time Of Flight (TOF) detector consists of 1593 Multigap Resistive Plate Chambers (MRPCs) operating with a mixture of Freon (93%) and SF6 (7%), covering a total active area of about 140 m2 and accounting for more than 150,000 readout channels. During the latest LHC shutdown, the detector underwent a major upgrade of its readout, allowing for continuous data taking and, therefore, fully exploiting the increased luminosity provided by the LHC in Pb–Pb collisions. Thanks to a time resolution of 68 ps, the ALICE TOF detector provides a crucial tool for identifying charged particles produced at intermediate momenta in high energy pp, pA, and AA collisions at the LHC. This feature is fundamental in high-energy nuclear physics as it allows for basic measurements of the identified particle production, which is used to characterize the Quark Gluon Plasma created in heavy-ion collisions. After 15 years of operations, the detector performance remains excellent, with no degradation in the stability of operation or in the efficiency of particle detection. The detector performance is presented in the paper, also in terms of operations and stability. The calibration procedures of the detector in the continuous readout scheme are discussed, along with the implications for particle identification. A few PID examples in physics analysis will also be described
Social development and rural electrification programs not met
No full textO trabalho de pesquisa tem por objetivo estudar e oferecer uma nova política de eletrificação rural para o Estado de São Paulo, tendo por base o seguinte questionamento: cabe ao Estado de São Paulo manter política própria de eletrificação rural após a lei da universalização, nº 10.438/2002, do programa Luz para Todos e, ainda, do conjunto de Resoluções da ANEEL sobre o assunto? A abordagem do assunto tem por base a experiência do autor sobre o tema eletrificação rural, em especial com os programas desenvolvidos no Estado a partir de 1996, sob gestão ou coordenação da CERESP, órgão da Secretaria de Saneamento e Energia (SSE). A regulação da época previa que o interessado deveria pagar pelo custo de conexão à rede elétrica das concessionárias, assim, os programas desenvolvidos até então, tratavam de complexos sistemas de financiamento dessas conexões. As inovações desses programas contribuíram para a implantação da lei da universalização 10.438/2002 e do programa Luz para Todos. O programa Luz para Todos trata a universalização de modo diferente daquele determinado pela Resolução 456/2000, em que os benefícios concedidos aos interessados atendidos pelo programa são mais abrangentes daqueles permitidos pela regulação atual. A pesquisa mostra que esse é o diferencial que permite a real universalização do acesso ao serviço público de eletricidade no meio rural, de forma adequada. O programa será encerrado em dezembro de 2010, cabendo às concessionárias atender os interessados apenas pelos critérios da universalização. O trabalho aponta grande possibilidade de exclusão do acesso à eletricidade a partir desse momento, e propõe oferecer ao Estado uma pesquisa que indique caminhos que possibilite a São Paulo antecipar-se às consequências que virão com fim do Programa Luz para Todos. Trata-se, assim, de pesquisa que envolve experiência profissional e conhecimento acadêmico.The research work aims to study and provide a new policy of rural electrification in the State of Sao Paulo, based on the following question: \"the State of Sao Paulo must maintain its own policy of rural electrification after the universal law, nº 10.438/2002, the Light for All program and also the set of resolutions by ANEEL on the matter?\" The approach to the subject is based on the author\'s experience on the subject of rural electrification, especially through programs developed in the state since 1996, under the management or coordination of CERESP, organ of the SSE. The regulation of time provided that the person should pay for the cost of grid connection to the utilities power grids, therefore the programs developed so far, dealt with complex financial systems of these connections. The innovations of these programs contributed to the implementation of the law universal nº 10438/2002 and the Light for All program. The Light for All Program is universal and so different from that determined by ANEEL Resolution 456/2000, where the benefits granted to persons enrolled in the program are the most comprehensive of those allowed by current regulation. Research shows that this is the differential that allows the real universal access to public electricity in rural areas, as appropriate. The program will end in December 2010, leaving it to dealers only meet the criteria of universality. The work shows great possibility of exclusion from access to electricity from that time, and proposes giving the state a survey indicating that enable paths to Sao Paulo to anticipate the consequences that come with the end of the Light for All Program. Therefore, it is a research that involves work experience and academic knowledge
Social development and rural electrification programs not met
No full textO trabalho de pesquisa tem por objetivo estudar e oferecer uma nova política de eletrificação rural para o Estado de São Paulo, tendo por base o seguinte questionamento: cabe ao Estado de São Paulo manter política própria de eletrificação rural após a lei da universalização, nº 10.438/2002, do programa Luz para Todos e, ainda, do conjunto de Resoluções da ANEEL sobre o assunto? A abordagem do assunto tem por base a experiência do autor sobre o tema eletrificação rural, em especial com os programas desenvolvidos no Estado a partir de 1996, sob gestão ou coordenação da CERESP, órgão da Secretaria de Saneamento e Energia (SSE). A regulação da época previa que o interessado deveria pagar pelo custo de conexão à rede elétrica das concessionárias, assim, os programas desenvolvidos até então, tratavam de complexos sistemas de financiamento dessas conexões. As inovações desses programas contribuíram para a implantação da lei da universalização 10.438/2002 e do programa Luz para Todos. O programa Luz para Todos trata a universalização de modo diferente daquele determinado pela Resolução 456/2000, em que os benefícios concedidos aos interessados atendidos pelo programa são mais abrangentes daqueles permitidos pela regulação atual. A pesquisa mostra que esse é o diferencial que permite a real universalização do acesso ao serviço público de eletricidade no meio rural, de forma adequada. O programa será encerrado em dezembro de 2010, cabendo às concessionárias atender os interessados apenas pelos critérios da universalização. O trabalho aponta grande possibilidade de exclusão do acesso à eletricidade a partir desse momento, e propõe oferecer ao Estado uma pesquisa que indique caminhos que possibilite a São Paulo antecipar-se às consequências que virão com fim do Programa Luz para Todos. Trata-se, assim, de pesquisa que envolve experiência profissional e conhecimento acadêmico.The research work aims to study and provide a new policy of rural electrification in the State of Sao Paulo, based on the following question: \"the State of Sao Paulo must maintain its own policy of rural electrification after the universal law, nº 10.438/2002, the Light for All program and also the set of resolutions by ANEEL on the matter?\" The approach to the subject is based on the author\'s experience on the subject of rural electrification, especially through programs developed in the state since 1996, under the management or coordination of CERESP, organ of the SSE. The regulation of time provided that the person should pay for the cost of grid connection to the utilities power grids, therefore the programs developed so far, dealt with complex financial systems of these connections. The innovations of these programs contributed to the implementation of the law universal nº 10438/2002 and the Light for All program. The Light for All Program is universal and so different from that determined by ANEEL Resolution 456/2000, where the benefits granted to persons enrolled in the program are the most comprehensive of those allowed by current regulation. Research shows that this is the differential that allows the real universal access to public electricity in rural areas, as appropriate. The program will end in December 2010, leaving it to dealers only meet the criteria of universality. The work shows great possibility of exclusion from access to electricity from that time, and proposes giving the state a survey indicating that enable paths to Sao Paulo to anticipate the consequences that come with the end of the Light for All Program. Therefore, it is a research that involves work experience and academic knowledge
Innovations in silicon detector technologies for next-generation experiments: Improving timing precision of LGADs for ALICE 3
No full textIn the dynamic realm of silicon detector advancements, a big challenge remains to unlock the full potential for realizing large-area systems, showcasing the extraordinary time resolution demanded by next-generation experiments. This proceeding provides an overview of the intensive R&D; program on Low Gain Avalanche Diodes (LGADs) in the context of the future ALICE 3 experiment at CERN, in Run 5 and 6, aiming to develop a 20-picosecond technology for the Time-Of-Flight detector. Comprehensive studies were conducted on progressively thinner sensors, among which the first very thin LGAD ever produced by Fondazione Bruno Kessler (FBK) and achieving time resolutions below 20 ps. The innovative concept of double-LGAD was introduced and tested for the first time, yielding a significant benefit for the electronics and also an additional improvement in overall time resolution. Finally, the results of a recent investigation on how time resolution depends on the angle of incident particles is shown
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