Plataforma de inovação agrária de Moçambique - informações geoespaciais para a gestão dos recursos naturais e desenvolvimento agrícola.

O projeto Embrapa?Moçambique é baseado nas similaridades edafoclimáticas existentes entre as savanas moçambicanas e o Cerrado brasileiro e objetiva o levantamento e o mapeamento das potencialidades dos recursos naturais de Moçambique. Neste trabalho, foi gerado um mosaico digital de Moçambique a partir de imagens do satélite Landsat 8, do ano de 2013, e foram estabelecidos critérios para: a definição das órbitas-ponto; o processamento digital das imagens; o estabelecimento de um layout; a sobreposição de planos de informações de interesse para os grupos de pesquisa brasileiro e moçambicano, como localização de parques, reservas, rios principais; entre outros. Como resultado alcançado, destaca-se a geração e disponibilização do mosaico digital composto por 49 cenas, que dará apoio para a análise preliminar, em ambiente de sistemas de informação geográfica, para o levantamento de uso e cobertura das terras de Moçambique

Interval between first dose and booster affected antibody production in cattle vaccinated against rabies

In this study, we compared the levels of neutralizing antibodies induced by inactivated rabies vaccine in cattle by using three alternative immunization procedures. Forty-five bovines (breed nelore) were then organized in three groups (A, B and C, with 15 animals/group). Group A received only one vaccine dose at day zero and Group B received the first dose at day zero and then another dose at day 30 (early booster). Group C was also immunized with two doses; however, the booster was postponed until day 180 after the first dose (delayed booster). Blood samples were withdrawn at days zero (before the first dose) and 30, 210, 390, and 540 after the beginning of immunization and the antibody titers were evaluated by mouse neutralization test. The protocol used to immunize Group C (booster at day 180) was clearly more efficient. In this group, antibody levels were higher and also remained higher for longer periods in comparison with the other two groups. These results show that booster timing significantly affected antibody levels. Therefore, programs addressed to control this disease in cattle should consider not only the use of a booster but also its administration time

Environmental and Oceanographic Conditions at the Continental Margin of the Central Basin, Northwestern Ross Sea (Antarctica) since the Last Glacial Maximum

The continental margin is a key area for studying the sedimentary processes related to the advance and retreat of the Ross Ice Shelf (Antarctica); nevertheless, much remains to be investigated. The aim of this study is to increase the knowledge of the last glacial/deglacial dynamics in the Central Basin slope–basin system using a multidisciplinary approach, including integrated sedimentological, micropaleontological and tephrochronological information. The analyses carried out on three box cores highlighted sedimentary sequences characterised by tree stratigraphic units. Collected sediments represent a time interval from 24 ka Before Present (BP) to the present time. Grain size clustering and data on the sortable silt component, together with diatom, silicoflagellate and foraminifera assemblages indicate the influence of the ice shelf calving zone (Unit 1, 24–17 ka BP), progressive receding due to Circumpolar Deep Water inflow (Unit 2, 17–10.2 ka BP) and (Unit 3, 10.2 ka BP–present) the establishment of seasonal sea ice with a strengthening of bottom currents. The dominant and persistent process is a sedimentation controlled by contour currents, which tend to modulate intensity in time and space. A primary volcanic ash layer dated back at around 22 ka BP is correlated with the explosive activity of Mount Rittmann

Preliminary results on a laminated core collected from Cape Hallett bay (northern Victoria Land)

6nonenoneFINOCCHIARO F; LANGONE L; COLIZZA E.; BUSETTI M; FONTOLAN G; GIGLIO FFinocchiaro, Furio; Langone, L; Colizza, Ester; Busetti, M; Fontolan, Giorgio; Giglio, F