Morphology and biometric of the vesicular and bulbourethral glands in castrated and non-castrated Santa Ines breed sheep

Introduction: The purpose of this paper is to determine the topography, biometry and light microscopy image of the vesicular and bulbourethral glands in order to analyze morphologic features of the accessory sexual glands in castrated and non-castrated animals. Materials and Methods: The morphology of the accessory sexual glands was investigated in 14 adult Santa Ines breed sheep, weighing 32 kg, on average. Six of them were castrated, and eight, non-castrated. For macroscopic study, the description of these two glands was carried out, as well as dissection and biometry study. Moreover, weight, length, height and width measurements were evaluated. For histological analysis, the vesicular and bulbourethral glands were sampled. Results: The topography of the reproductive glands was similar to bovine species. However, lower macroscopic measurements (p < 0,05) in the glands of the castrated sheep were evidenced when compared with the non-castrated ones. Characteristics such as shape of the glands, composition of the layer mucosa, the lamina propria, muscular, the excretory ducts and the adventitia were determined. Conclusion: Sheep castration promoted changes in the biometric measures of the glands, which were lower in castrated animals. The morphological and biometric characteristics of the vesicular and bulbourethral glands in sheep were determined.

Local data fusion algorithm for fire detection through mobile robot

Multisensor data fusion is a technique that combines the readings of multiple sensors to detect some phenomenon. Data fusion applications are numerous and they can be used in smart buildings, environment monitoring, industry and defense applications. The main goal of multisensor data fusion is to minimize false alarms and maximize the probability of detection based on the detection of multiple sensors. In this paper a local data fusion algorithm based on luminosity, temperature and flame for fire detection is presented. The data fusion approach was embedded in a low cost mobile robot. The prototype test validation has indicated that our approach can detect fire occurrence. Moreover, the low cost project allow the development of robots that could be discarded in their fire detection missions. © 2013 IEEE.

Meiotic pairing of B chromosomes, multiple sexual system, and Robertsonian fusion in the red brocket deer Mazama americana (Mammalia, Cervidae)

Deer species of the genus Mazama show significant inter and intraspecific chromosomal variation due to the occurrence of rearrangements and B chromosomes. Given that carriers of aneuploidies and structural rearrangements often show anomalous chromosome pairings, we here performed a synaptonemal complex analysis to study chromosome pairing behavior in a red brocket deer (Mazama americana) individual that is heterozygous for a Robertsonian translocation, is a B chromosome carrier, and has a multiple sex chromosome system (XY1Y2). The synaptonemal complex in spermatocytes showed normal chromosome pairings for all chromosomes, including the autosomal and sex trivalents. The electromicrographs showed homology among B chromosomes since they formed bivalents, but they also appeared as univalents, indicating their anomalous behavior and non-Mendelian segregation. Thus, synaptonemal complex analysis is a useful tool to evaluate the role of B chromosomes and rearrangements during meiosis on the intraspecific chromosomal variation that is observed in the majority of Mazama species. © FUNPEC-RP.

Seminario Regional sobre la Normativa del Transporte Multimodal: síntesis y conclusiones

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Sistema de responsabilidad y seguros en el caso de contratos de transporte multimodal internacional

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Seminario sobre Transporte Multimodal en América Central: síntesis y conclusiones

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Comentarios al temario provisional de la Segunda Reunión Regional Latinoamericana Preparatoria de la Convención Internacional de Transporte Multimodal = Remarks on the provisional agenda of the Second Latin American Regional Preparatory Meeting on the International Convention on Multimodal Transport

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Análise de transporte multimodal na região da hidrovia Tietê-Paraná

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Convención sobre el transporte multimodal internacional: antecedentes y aspectos de interés para los países en desarrollo

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Evolución de la posición latinoamericana en relación con las negociaciones de la Convención de Transporte Multimodal Internacional = Evolution of the Latin American position regarding the negotiations for a Convention on International Multimodal Transport

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Perspectivas de la aeronavegación comercial en Sudamérica; resumenes de documentos de la CEPAL sobre transporte marítimo y transporte multimodal.

Seminario ALADI-CEPAL Asociación Latinoamericana de Integración - Comisión Económica para América Latina y el CaribeSantiago de Chile, 15 al 17 de abril de 1997 Participaron a título personal en un debate abierto especialistas de los sectores público y privado de Brasil, Chile, Colombia, Paraguay, Perú, Uruguay y Venezuela, además de la Asociación Internacional de Transporte Aéreo Latinoamericano (AITAL), la Comisión Latinoamericana de Aviación Civil (CLAC) y la Organización de la Aviación Civil Internacionanal (OACI). Los temas analizados en el seminario fueron: 1. La situación y perspectivas del transporte aéreo internacional: políticas y tendencias en Estados Unidos y la Unión Europea.2. Los acuerdos subregionales en América del Sur. 3.La evolución de las políticas nacionales en la región. 4.Los cambios estructurales en la gestión empresarial. 5.La utilización de los derechos de tráfico aerocomerciales. 6.La seguridad en la aeronavegación. 7.Los desafíos de las líneas aéreas de la región.