11 research outputs found
Structural Aspects of Two-Dimensional Anomalous Gauge Theories
A foundational investigation of the basic structural properties of
two-dimensional anomalous gauge theories is performed. The Hilbert space is
constructed as the representation of the intrinsic local field algebra
generated by the fundamental set of field operators whose Wightman functions
define the model. We examine the effect of the use of a redundant field algebra
in deriving basic properties of the models and show that different results may
arise, as regards the physical properties of the generalized chiral model, in
restricting or not the Hilbert space as representation of the intrinsic local
field algebra. The question referring to considering the vector Schwinger model
as a limit of the generalized anomalous model is also discussed. We show that
this limit can only be consistently defined for a field subalgebra of the
generalized model.Comment: 40 pages. Latex, to appear in Annals of Physic
Estudo do amortecimento do pĂȘndulo simples: uma proposta para aplicação em laboratĂłrio de ensino
Quantifying Inter-Subject Agreement in Brain-Imaging Analyses
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Tuberculose faringolarĂngea Laryngo-pharyngeal Tuberculosis
A apresentação faringolarĂngea da tuberculose como forma isolada da doença Ă© rara, entretanto, nos Ășltimos anos, com o aumento progressivo do nĂșmero de casos de tuberculose em geral, a possibilidade dessas localizaçÔes aumentou. OBJETIVO: Descrever caso de tuberculose faringolarĂngea primĂĄria em paciente grĂĄvida e imunocompetente. RELATORIO DE CASO: Paciente do sexo feminino, 30 anos, com histĂłria de odinofagia hĂĄ 10 meses, sem qualquer sintoma sistĂȘmico ou outras queixas referentes Ă s vias aĂ©reas superiores. Apresentava lesĂŁo granulomatosa em orofaringe e laringe, e o resultado da biĂłpsia revelou bacilos ĂĄlcool-ĂĄcido resistentes. Exames clĂnico e radiolĂłgico do aparelho respiratĂłrio sem alteraçÔes. Realizado tratamento anti-tuberculose por nove meses com resolução completa do quadro. CONCLUSĂO: Autores realçam a importĂąncia epidemiolĂłgica da tuberculose e a necessidade de um alto grau de suspeição de lesĂ”es das vias aĂ©reas superiores para o diagnĂłstico precoce da doença.<br>Tuberculosis of the Larynx and pharynx only is rare. However, in the last few years, the number of tuberculosis cases in general have had a dramatic increase, thus increasing the possibility of isolated laryngo-pharyngeal lesions. AIM: To report a case of isolated laryngo-pharyngeal tuberculosis in a pregnant, immunocompetent host. CASE REPORT: A 30- year-old pregnant female had complained of odynophagia for the last ten months. There were no other respiratory or systemic symptoms. An oro-pharyngeal granulomatous lesion was found, and the biopsy revealed acid-fast bacilli. There were no clinical or radiologic pulmonary findings. She was submitted successfully to an tuberculosis treatment protocol for nine months. CONCLUSIONS: The authors point out the epidemiological importance of tuberculosis and the need for a higher degree of suspicion when dealing with uncommon upper airway lesions to make an early diagnosis