A BRST Characterization of the Broken Phase Observables of the Confining Complex Theory

Some time ago we have introduced a route to provide confinement in the sense that particle excitations would appear from condensates of fields that do not have physical asymptotic states. We envisaged this mechanism in an asymmetric vacuum phase of a complex gauge field theory. More recently, we showed how to define a BRST operator to the broken phase of a generic spontaneous broken field theory. Our intention here is to apply these late concepts to the previous complex field theory in order to give a cohomological characterization of those condensed states as actual physical observables of this theory in its broken phase.Comment: 2 figures, 12 page

Comportamento ingestivo de fêmeas bubalinas suplementadas com torta de palmiste e observadas nas condições térmicas e hídricas em área da Embrapa Amazônia Oriental.

O objetivo do trabalho foi avaliar a influência da suplementação energética no comportamento ingestivo de fêmeas bubalinas em pastejo. Utilizaram-se 24 fêmeas com idade e peso médio iniciais de 54 meses e 503,1 kg, respectivamente, distribuídas em delineamento inteiramente casualizado, com quatro tratamentos e seis repetições por tratamento. O experimento foi conduzido nos dias 28 e 29/09/2013 com suplementação diária, tendo como base a torta de palmiste. Fez-se a inclusão de níveis a partir da relação do peso corporal, ou seja, 1,0%; 0,5%; 0,25% e 0% (controle negativo). Associado a cada nível de dieta foi incluído 0,15% de farelo de trigo em todos os tratamentos, atuando como palatabilizante. Os animais receberam a suplementação uma vez por dia em cocho individual. Os animais foram colocados em pastagem de Brachiaria brizantha cv. Marandu em sistema de pastejo rotacionado com acesso a mistura mineral oferecido em cochos cobertos e água em bebedouros artificiais. As observações referentes ao comportamento animal foram feitas de forma visual, pelo método de varredura instantânea com intervalos de cinco minutos, durante 24 horas de avaliação. As variáveis comportamentais observadas e registradas foram: Tempo pastejando; Tempo de ruminação; Tempo em ócio. Foi realizada a análise de variância e não foi observada diferença estatística significativa pelo teste de Tukey (P>0,05) entre níveis de suplementação e características de comportamento avaliada

The effects of spatial constraints on the evolution of weighted complex networks

Motivated by the empirical analysis of the air transportation system, we define a network model that includes geographical attributes along with topological and weight (traffic) properties. The introduction of geographical attributes is made by constraining the network in real space. Interestingly, the inclusion of geometrical features induces non-trivial correlations between the weights, the connectivity pattern and the actual spatial distances of vertices. The model also recovers the emergence of anomalous fluctuations in the betweenness-degree correlation function as first observed by Guimer\`a and Amaral [Eur. Phys. J. B {\bf 38}, 381 (2004)]. The presented results suggest that the interplay between weight dynamics and spatial constraints is a key ingredient in order to understand the formation of real-world weighted networks

Uso do levantamento utilitário em nível de pequena propriedade rural em um projeto de assentamento no estado do Acre.

Os problemas que envolvem os assentamentos rurais, tanto do lado social como econômico, tem sua explicação na ausência do planejamento do uso do solo. O objetivo deste trabalho foi de classificar as terras de acordo com sua capacidade de uso, o que propiciará uma melhor exploração da áre

Examining the generalizability of research findings from archival data

This initiative examined systematically the extent to which a large set of archival research findings generalizes across contexts. We repeated the key analyses for 29 original strategic management effects in the same context (direct reproduction) as well as in 52 novel time periods and geographies; 45% of the reproductions returned results matching the original reports together with 55% of tests in different spans of years and 40% of tests in novel geographies. Some original findings were associated with multiple new tests. Reproducibility was the best predictor of generalizability-for the findings that proved directly reproducible, 84% emerged in other available time periods and 57% emerged in other geographies. Overall, only limited empirical evidence emerged for context sensitivity. In a forecasting survey, independent scientists were able to anticipate which effects would find support in tests in new samples.info:eu-repo/semantics/publishedVersio

α-intercalated cells defend the urinary system from bacterial infection

{alpha}–Intercalated cells (A-ICs) within the collecting duct of the kidney are critical for acid-base homeostasis. Here, we have shown that A-ICs also serve as both sentinels and effectors in the defense against urinary infections. In a murine urinary tract infection model, A-ICs bound uropathogenic E. coli and responded by acidifying the urine and secreting the bacteriostatic protein lipocalin 2 (LCN2; also known as NGAL). A-IC–dependent LCN2 secretion required TLR4, as mice expressing an LPS-insensitive form of TLR4 expressed reduced levels of LCN2. The presence of LCN2 in urine was both necessary and sufficient to control the urinary tract infection through iron sequestration, even in the harsh condition of urine acidification. In mice lacking A-ICs, both urinary LCN2 and urinary acidification were reduced, and consequently bacterial clearance was limited. Together these results indicate that A-ICs, which are known to regulate acid-base metabolism, are also critical for urinary defense against pathogenic bacteria. They respond to both cystitis and pyelonephritis by delivering bacteriostatic chemical agents to the lower urinary system