Abstract At finite density, the spontaneous breakdown of an internal non-Abelian symmetry dictates, along with gapless modes, modes whose gap is fixed by the algebra and proportional to the chemical potential: the gapped Goldstones.Generically the gap of these states is comparable to that of other non-universal excitations or to the energy scale wh

Este trabalho resultou do Curso de Pós-Graduação Lato Sensu de Especialização em Docência na Educação Profissional e Tecnologia do Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE).Objetivou refletir sobre as contribuições das culturas afro-brasileira Betaine HCl e indí­genas no setor agrí­cola, fornecendo subsí

Abstract We use a regression discontinuity design to estimate the causal effect of antiretroviral therapy (ART) Fuse Holder eligibility according to national treatment guidelines of South Africa on two risk factors for cardiovascular disease, body mass index (BMI) and blood pressure.We combine survey data collected in 2010 in KwaZulu-Natal, South A

Forest fragmentation and habitat loss are detrimental to top carnivores, such as jaguars (Panthera onca) and pumas (Puma concolor), but effects on mesocarnivores, such as ocelots (Leopardus pardalis), are less clear.Ocelots need native forests, but also Bar Cart might benefit from the local extirpation of larger cats such as pumas and jaguars throu

Active noise control (ANC) systems usually involve a large number of loudspeakers and error microphones in order to achieve noise reduction over an extended region of space.Although fundamentals of ANC theory and principles of ANC methods have been well-established over the past 40 years, applications of this technology are facing new challenges.A