Uso de dardos anestésicos para a captura de veados campeiros (Ozotoceros bezoarticus) no Pantanal.

Existem poucos relatos sobre a captura de cervídeos na América do Sul. Até hoje, a captura do veado campeiro (Ozotoceros bezoarticus) em vida livre foi feita principalmente com uso de redes, seguida de contenção química. Neste trabalho, avaliou-se a viabilidade de captura de indivíduos da espécie utilizando dardos anestésicos, lançados à distância. Essa técnica, também conhecida como ?darting?, nunca havia sido reportada para captura de O. bezoarticus na natureza, pois se acreditava que os animais morreriam em fuga, devido ao estresse relacionado ao tiro. A fim de evitar tal possibilidade, a técnica apresentada incluiu uma fase longa de abordagem dos animais. No geral, a trajetória descrita durante a aproximação teve formato de espiral em torno dos alvos e, via de regra, o atirador adotou ângulos oblíquos para aproximar-se, até alcançar a condição de tiro (<20 m). Entre os anos de 2005 e 2006, foram realizadas 23 capturas de veados campeiros com uso de Zolazepan + Tiletamina (1:1), na dosagem de 10 mg/kg ou Telazol + Xilazina (2:1), na dosagem de 3 a 4,5 mg/kg e 1,5 a 2,25 mg/kg, respectivamente. Os dardos foram lançados com de pistola de gás comprimido ?dartgun? ou zarabatana. Todos os animais capturados recuperam-se após a captura e nenhuma injúria visível foi registrada. Apenas uma mortalidade foi observada durante o estudo. O método mostrou-se eficaz e pode substituir com vantagens o anterior, uma vez que a equipe necessária é menor e o risco de mortalidade mais baixo. A alternativa apresentada é recomendada para futuras capturas de O. bezoarticus. A experiência do atirador é um fator limitante ao método.bitstream/CPAP/55937/1/BP71.pdfFormato eletrônic

Registro de Ocorrência de Jacaré-paguá (Paleosuchus palpebrosus), na RPPN Engenheiro Eliezer Batista, Pantanal, Brasil

O objetivo central do estudo foi identificar riachos, registrar a ocorrência do jacaré-paguá, Paleosuchus palpebrosus, dentro da área da Reserva e no seu entorno, e propor ações de pesquisas com a espécie em longo prazo.bitstream/item/161350/1/COT60.pdfComunicado Técnico Formato Eletrônico

Strichartz Estimates for the Vibrating Plate Equation

We study the dispersive properties of the linear vibrating plate (LVP) equation. Splitting it into two Schr\"odinger-type equations we show its close relation with the Schr\"odinger equation. Then, the homogeneous Sobolev spaces appear to be the natural setting to show Strichartz-type estimates for the LVP equation. By showing a Kato-Ponce inequality for homogeneous Sobolev spaces we prove the well-posedness of the Cauchy problem for the LVP equation with time-dependent potentials. Finally, we exhibit the sharpness of our results. This is achieved by finding a suitable solution for the stationary homogeneous vibrating plate equation.Comment: 18 pages, 4 figures, some misprints correcte

Optical frequency fiber dissemination at 10^&#8722;19 uncertainty level in Italy

We describe the realization of a coherent optical fiber link for the metrological frequency dissemination on the national scale. This infrastructure will improve the frequency references used in radio-astronomy and in atomic physics and will benefit several laboratories in Italy involved in high resolution spectroscopy, matter physics and radioastronomy. The present infrastructure will be part of a forthcoming European network of optical links. This paper describes the haul implementation, the characterization and the future applications of this backbone. © 2014 AEIT

Twin beam quantum-enhanced correlated interferometry for testing fundamental physics

Quantum metrology deals with improving the resolution of instruments that are otherwise limited by shot noise and it is therefore a promising avenue for enabling scientific breakthroughs. The advantage can be even more striking when quantum enhancement is combined with correlation techniques among several devices. Here, we present and realize a correlation interferometry scheme exploiting bipartite quantum correlated states injected in two independent interferometers. The scheme outperforms classical analogues in detecting a faint signal that may be correlated/uncorrelated between the two devices. We also compare its sensitivity with that obtained for a pair of two independent squeezed modes, each addressed to one interferometer, for detecting a correlated stochastic signal in the MHz frequency band. Being the simpler solution, it may eventually find application to fundamental physics tests, e.g., searching for the effects predicted by some Planck scale theories

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Human immunotypes impose selection on viral genotypes through viral epitope specificity

BACKGROUND: Understanding the genetic interplay between human hosts and infectious pathogens is crucial for how we interpret virulence factors. Here, we tested for associations between HIV and host genetics, and interactive genetic effects on viral load (VL) in HIV+ ART-naive clinical trial participants. METHODS: HIV genomes were sequenced and the encoded amino acid (AA) variants were associated with VL, human single nucleotide polymorphisms (SNPs) and imputed HLA alleles, using generalized linear models with Bonferroni correction. RESULTS: Human (388,501 SNPs) and HIV (3,010 variants) genetic data was available for 2,122 persons. Four HIV variants were associated with VL (p-values<1.66×10 -5). Twelve HIV variants were associated with a range of 1-512 human SNPs (p-value<4.28×10 -11). We found 46 associations between HLA alleles and HIV variants (p-values<1.29×10 -7). We found HIV variants and immunotypes when analyzed separately, were associated with lower VL, whereas the opposite was true when analyzed in concert. Epitope binding prediction showed HLA alleles to be weaker binders of associated HIV AA variants relative to alternative variants on the same position. CONCLUSIONS: Our results show the importance of immunotype specificity on viral antigenic determinants, and the identified genetic interplay puts emphasis that viral and human genetics should be studied in the context of each other