Results 111 to 120 of about 217,289 (296)
Estabelecimento do Conceito de Temperatura como uma grandeza derivada da Energia e da Entropia [PDF]
arXiv, 2002 Temperature is introduced as a derived concept from energy and entropy. We consider two sub-systems in equilibrium for several configurations. The equality of temperature of the sub-systems is obtained from the equilibrium condition. The isothermal transformation is defined for several configurations and from this definition we obtain the Clausius ...
arxiv
Scientia Agricola, 2002 A radiação solar recebida na superfície do solo, além de sua relevância a diversas atividades humanas diárias, desempenha um papel importante no crescimento e desenvolvimento de plantas.
André Belmont Pereira +2 more
doaj
Engenharia Agrícola, 2010 A conscientização da importância do meio ambiente tem incentivado o estudo de novas fontes energéticas renováveis e menos poluentes. Dentre essas fontes, a energia solar destaca-se por ser perene e limpa.
Luiz H. Basso +4 more
doaj +1 more source
The end of the Galactic spectrum [PDF]
arXiv, 2007 We use a diffusion galactic model to analyze the end of the Galactic cosmic ray spectrum and its mixing with the extragalactic cosmic ray flux. We analyze the transition between Galactic and extragalactic components using two different extragalactic models.
arxiv
Energia no Sistema Climático [PDF]
, 2011 AS FORMAS DE ENERGIA DO SISTEMA CLIMÁTICO. MODOS DE TRANSFERÊNCIA DE ENERGIA.A RADIAÇÃO SOLAR, TERRESTRE E ATMOSFÉRICA (características da radiação,Radiação Solar, Radiação terrestre e radiação atmosférica….
Andrade, José
core
TRIBUTAÇÃO E BENEFÍCIOS FISCAIS DECORRENTES DA GERAÇÃO DISTRIBUÍDA DE ENERGIA SOLAR
Revista do Direito PúblicoNos dias atuais, há um enorme esforço global de incentivo às fontes alternativas de produção de energia elétrica mais sustentáveis e de menor emissão de poluentes e gases de efeito estufa, sendo, entre elas, a geração de energia solar.
Paulo Roberto dos Santos Corval +2 more
doaj +1 more source
Galactic neutrino background from cosmic ray interaction with the ISM content [PDF]
arXiv, 2007 We use a diffusive model for the propagation of Galactic cosmic rays to estimate the charged pion production in interactions with protons of the interstellar medium. Cosmic ray nuclei from proton to iron are considered and the corresponding contribution to the neutrino secondary flux produced as a result of spallation is also estimated.
arxiv
A software for learning Information Theory basics with emphasis on Entropy of Spanish [PDF]
Revista Energia y Computacion, Vol. 16, No.1, June 2008, pp.58-64, 2007 In this paper, a tutorial software to learn Information Theory basics in a practical way is reported. The software, called IT-tutor-UV, makes use of a modern existing Spanish corpus for the modeling of the source. Both the source and the channel coding are also included in this educational tool as part of the learning experience.
arxiv
Bridging the Gap Between Energy and Climate Policies in Brazil: Policy Options to Reduce Energy-Related GHG Emissions [PDF]
, 2015 Brazil is facing a series of important policy decisions that will determine its energy future over the next several decades, with important implications for the country's economic competitiveness, the well-being of its citizens, and the global climate ...
Oswaldo Lucon +2 more
core
Quark Yukawa pattern from spontaneous breaking of flavour $SU(3)^3$ [PDF]
arXiv, 2015 A $SU(3)_Q \times SU(3)_u \times SU(3)_d$ invariant scalar potential breaking spontaneously the quark flavour symmetry can explain the standard model flavour puzzle. The approximate alignment in flavour space of the vacuum expectation values of the up and down `Yukawa fields' results as a dynamical effect.
arxiv