37 research outputs found
On single and double soft behaviors in NLSM
In this paper, we study the single and double soft behaviors of tree level
off-shell currents and on-shell amplitudes in nonlinear sigma model(NLSM). We
first propose and prove the leading soft behavior of the tree level currents
with a single soft particle. In the on-shell limit, this single soft emission
becomes the Adler's zero. Then we establish the leading and sub-leading soft
behaviors of tree level currents with two adjacent soft particles. With a
careful analysis of the on-shell limit, we obtain the double soft behaviors of
on-shell amplitudes where the two soft particles are adjacent to each other. By
applying Kleiss-Kuijf (KK) relation, we further obtain the leading and
sub-leading behaviors of amplitudes with two nonadjacent soft particles.Comment: 41 pages, 6 tables, 9 figures, minor revised, more content about
nonadjacent double soft limit, update the reference
Syndromic surveillance: etiologic study of acute febrile illness in dengue suspicious cases with negative serology. Brazil, Federal District, 2008
With the aim of identifying the etiology of acute febrile illness in patients suspected of having dengue, yet with non reagent serum, a descriptive study was conducted with 144 people using secondary serum samples collected during convalescence. The study was conducted between January and May of 2008. All the exams were re-tested for dengue, which was confirmed in 11.8% (n = 17); the samples that remained negative for dengue (n = 127) were tested for rubella, with 3.9% (n = 5) positive results. Among those non reactive for rubella (n = 122), tests were made for leptospirosis and hantavirus. Positive tests for leptospirosis were 13.9% (n = 17) and none for hantavirus. Non reactive results (70.8%) were considered as Indefinite Febrile Illness (IFI). Low schooling was statistically associated with dengue, rubella and leptospirosis (p = 0.009), dyspnea was statistically associated with dengue and leptospirosis (p = 0.012), and exanthem/petechia with dengue and rubella (p = 0.001). Among those with leptospirosis, activities in empty or vacant lots showed statistical association with the disease (p = 0.013). Syndromic surveillance was shown to be an important tool in the etiologic identification of IFI in the Federal District of Brazil
Comparison Of Auditory Event-related Potentials Between Children With Benign Childhood Epilepsy With Centrotemporal Spikes And Children With Temporal Lobe Epilepsy
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)The abnormal brain discharges observed in benign childhood epilepsy with centrotemporal spikes (BECTS) and temporal lobe epilepsy (TLE) are located close to areas responsible for auditory and language processing. This study aimed to analyze the results of auditory event-related potentials (P300) in children with BECTS and TLE in order to assess whether the epileptic activity in centrotemporal and temporal regions may compromise the integrity and physiology of auditory system structures. This was a prospective, comparative, and cross-sectional study. Group I (GI) consisted of 13 children diagnosed with BECTS, group II (GII), 7 children diagnosed with TLE, and control group (GIII), 16 healthy children, with no hearing or academic complaints. After neurological and basic audiological assessments, P300 was applied. The P300 latency and amplitude were compared between groups. Regarding latency, GI showed 324.1 (+ 31.5) ms, GII 336.3 (+ 23.5) ms, and GIII 318 (+ 27.7) ms. Amplitudes were 4.80 (+ 3.2) mu V in GI, 4.7 (+ 2.5) mu V in GII, and 5.8 (+ 2.4) mu V in GIII. Although children with BECTS showed prolonged latencies and reduced amplitudes, these differences were not considered statistically significant. Children with TLE showed statistically significant prolonged P300 latency compared with the control group (P=0.037). We speculate that abnormal electrical discharges in centrotemporal and temporal regions led to the slowing of auditory processing in our sample. (C) 2016 Elsevier Inc. All rights reserved.59111116CAPESFAPESP [06/56257-6]Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP
Análise da concordância dos dados de mortalidade por dengue em dois sistemas nacionais de informação em saúde, Brasil, 2000-2005 Reliability of dengue mortality data in two national health information systems, Brazil, 2000-2005
Este artigo analisa a concordância (bruta e ajustada) dos óbitos de dengue registrados no Sistema de Informação de Agravos de Notificação (SINAN) e Sistema de Informações sobre Mortalidade (SIM) no Brasil, no período de 2000 a 2005. Foi realizado um estudo epidemiológico observacional, seccional e descritivo de concordância dos dados de mortalidade por dengue nesses dois sistemas de informação. A concordância bruta e ajustada por chance (índice kappa) geral, no período de análise, foi de 99,9% e 19,6%, respectivamente. No ano com maior número de casos (2002), esses valores foram de 99,9% e 28,2%, respectivamente. A variação da proporção de óbitos concordantes de dengue nas Unidades Federadas (UF) brasileiras foi de 0% a 33%, e a Região Centro-Oeste foi a que apresentou maior mediana. Este estudo discute a importância da análise integrada e rotineira dos sistemas de informação em saúde com intuito de seu aprimoramento e a ampliação de seu uso para a avaliação e formulação de políticas de saúde adequadas.<br>We analyze the crude and adjusted reliability of dengue mortality data from the Notifiable Diseases Information System and the Mortality Information System in Brazil from 2000 to 2005. An observational, cross-sectional, descriptive epidemiological study was conducted. Overall crude agreement and chance-adjusted agreement (kappa index) over the study period were 99.9% and 19.6%, respectively. In the year with the most dengue cases (2002), these values were 99.9% and 28.2%, respectively. The proportion of concordant dengue deaths by State varied from 0% to 33%, and the Central-West region showed the highest median. We discuss the importance of integrating and continuing to analyze health information systems and recommend improving and increasing the use of these systems for appropriate public health evaluations