Situação atual e perspectivas para o cultivo da mangaba no estado de Sergipe.

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Avaliação de linhagens de feijão-caupi no Amapá.

A demanda por novas cultivares de feijão-caupi tem sido comum no meio rural do Amapá. Cabe destacar que os genótipos de porte prostrado apresentam maior vigor e se adaptam melhor em ambientes desfavoráveis, relativamente às cultivares de porte ereto. Nesse sentido o experimento teve objetivo de avaliar vinte linhagens de porte prostrado e semi-prostrado na região. Em Latossolo Amarelo, clima do tipo Ami, usou-se o delineamento experimental de blocos ao acaso e quatro repetições, adubação de 80 kg ha-1 (superfosfato triplo) e 50 kg ha-1 (cloreto de potássio). A semeadura manual ocorreu em fileiras espaçadas de 0,80 m e área útil de 8 m². A análise de variância mostrou diferença significativa pelo teste de Tukey (p< 0,05). A melhor produtividade de 1.251,9 kg ha-1, foi da cultivar BRS-Pajeú. Destacaram-se também MNC03-736F-6, BRS Xiquexique, MNC02-701F-2, MNC03-761F-1, MNC02-677F-5, Pingo de Ouro-1-2, MNC02-675F-9-5 e BRS Gurgéia. A linhagem MNC01-649F-1-3 alcançou menor período de floração, enquanto o maior comprimento de vagem foi do genótipo MNC02-677F-2.CONAC 2012. Disponível em: http://www.conac2012.org/resumos/pdf/133b.pdf. Acesso em: 22 jul. 2013

Avaliação de linhagens de feijão-caupi no Município de Mazagão, Estado do Amapá.

No Estado do Amapá o cultivo pelo feijão-caupi começa a ter grande aceitação, principalmente em função de sua excelente adaptação, baixo custo de produção e boa aceitação comercial. Um dos objetivos dos experimentos na região é desenvolver cultivares de porte ereto e semi-ereto adequadas ao cultivo totalmente mecanizado. Assim, em Latossolo Amarelo, em clima do tipo Ami, usando-se o delineamento experimental de blocos ao acaso com quatro repetições e adubação de 80 kg ha-1 (superfosfato triplo) e 50 kg ha-1 (cloreto de potássio), foram avaliadas vinte linhagens de feijão-caupi. A análise de variância mostrou diferença significativa pelo teste de Tukey (p< 0,05) para todas as características avaliadas. Os melhores desempenhos produtivos foram das linhagens MNC03-737F-5-1 com 1.425,7 kg ha-1, seguida pelos genótipos MNC03-737F-5-10 e MNC03-737F-5-9, com 1.293,9 kg ha-1 e 1.202,6 kg ha-1, respectivamente. Estes materiais estão inseridos na subclasse comercial branco. O início de floração teve média experimental em 45,6 dias, enquanto o comprimento de vagem foi de 18,2 cm. As linhagens mostraram-se tolerantes ao ataque de doenças e pragas.CONAC 2012. Disponível em: http://www.conac2012.org/resumos/pdf/133a.pdf. Acesso em: 22 jul. 2013

CASSIS: The Cornell Atlas of Spitzer/Infrared Spectrograph Sources. II. High-resolution observations

The Infrared Spectrograph (IRS) on board the Spitzer Space Telescope observed about 15,000 objects during the cryogenic mission lifetime. Observations provided low-resolution (R~60-127) spectra over ~5-38um and high-resolution (R~600) spectra over ~10-37um. The Cornell Atlas of Spitzer/IRS Sources (CASSIS) was created to provide publishable quality spectra to the community. Low-resolution spectra have been available in CASSIS since 2011, and we present here the addition of the high-resolution spectra. The high-resolution observations represent approximately one third of all staring observations performed with the IRS instrument. While low-resolution observations are adapted to faint objects and/or broad spectral features (e.g., dust continuum, molecular bands), high-resolution observations allow more accurate measurements of narrow features (e.g., ionic emission lines) as well as a better sampling of the spectral profile of various features. Given the narrow aperture of the two high-resolution modules, cosmic ray hits and spurious features usually plague the spectra. Our pipeline is designed to minimize these effects through various improvements. A super sampled point-spread function was created in order to enable the optimal extraction in addition to the full aperture extraction. The pipeline selects the best extraction method based on the spatial extent of the object. For unresolved sources, the optimal extraction provides a significant improvement in signal-to-noise ratio over a full aperture extraction. We have developed several techniques for optimal extraction, including a differential method that eliminates low-level rogue pixels (even when no dedicated background observation was performed). The updated CASSIS repository now includes all the spectra ever taken by the IRS, with the exception of mapping observations

Consensus on Aquatic Primary Productivity Field Protocols for Satellite Validation and Model Synthesis

The NASA PACE project, in conjunction with the IOCCG, EUMETSAT, and JAXA, have initiated an Aquatic Primary Productivity working group, with the aim to develop community consensus on multiple methods for measuring aquatic primary productivity used for satellite validation and model synthesis. A workshop to commence the working group efforts was held December 05-07, 2018 at the University Space Research Association headquarters in Columbia, MD U.S.A., bringing together 26 active researchers from 16 institutions. The group discussed the primary differences, nuances, scales, uncertainties, definitions, and best practices for measurements of primary productivity derived from in situ/on-deck/laboratory radio/stable isotope incubations, dissolved oxygen concentrations (from incubations or autonomous platforms such as floats or gliders), oxygen-argon ratios, triple oxygen isotope, natural fluorescence, and FRRF/ETR/kinetic analysis. These discussions highlighted the necessity to move the community forward towards the establishment of climate-quality primary productivity measurements that follow uniform protocols, which is imperative to ensure that existing and future measurements can be compared, assimilated, and their uncertainties determined for model development and validation. The specific deliverable resulting from of this activity will be a protocol document, published in coordination with the IOCCG. This presentation will discuss the findings of the meeting, and address future activities of the working group

Recomendações de pesquisas de solo e água para áreas irrigadas do Nordeste com problemas de sais.

No Brasil o Programa de Irrigação, de responsabilidade do Ministério do Interior, conta atualmente, com 63 projetos sendo três no Sul do país e 60 no Nordeste. Os projetos localizados nesta última região se distribuem entre o DNOCS que conta com 40 projetos e a CODEVASF com 20 projetos

Microstructure and magneto-dielectric properties of the chitosan/gelatin-YIG biocomposites

This work is devoted to the preparation of yttrium iron garnet (YIG) ferrimagnetic biocomposites based in biodegradable chitosan and gelatin. The aim was to produce composite films containing controlled amounts of YIG to obtain a new biological material with magneto-dielectric features. Structural characterization of the biocomposites was made by scanning electron microscopy, X-ray diffraction, infrared absorption spectroscopy and thermal analysis, while the dielectric and magnetic properties were obtained from dielectric spectroscopy and magnetic hysteresis loops, respectively. The versatility of the films obtained makes them possible candidates for use as biomaterials or electronic device