Calogênese in vitro em segmentos foliares de Kalanchoe pinnata LAM.

O presente trabalho teve como objetivo avaliar o efeito da combinação de ácido 2,4- diclorofenoxiácetico (2,4-D) e benzilaminopurina (BAP) na indução de calos em segmentos foliares de K. pinnata

Terrestrial Carbon Sinks in the Brazilian Amazon and Cerrado Region Predicted from MODIS Satellite Data and Ecosystem Modeling

A simulation model based on satellite observations of monthly vegetation cover from the Moderate Resolution Imaging Spectroradiometer (MODIS) was used to estimate monthly carbon fluxes in terrestrial ecosystems of Brazilian Amazon and Cerrado regions over the period 2000-2004. Net ecosystem production (NEP) flux for atmospheric CO2 in the region for these years was estimated. Consistently high carbon sink fluxes in terrestrial ecosystems on a yearly basis were found in the western portions of the states of Acre and Rondonia and the northern portions of the state of Par a. These areas were not significantly impacted by the 2002-2003 El Nino event in terms of net annual carbon gains. Areas of the region that show periodically high carbon source fluxes from terrestrial ecosystems to the atmosphere on yearly basis were found throughout the state of Maranhao and the southern portions of the state of Amazonas. As demonstrated though tower site comparisons, NEP modeled with monthly MODIS Enhanced Vegetation Index (EVI) inputs closely resembles the measured seasonal carbon fluxes at the LBA Tapajos tower site. Modeling results suggest that the capacity for use of MODIS Enhanced Vegetation Index (EVI) data to predict seasonal uptake rates of CO2 in Amazon forests and Cerrado woodlands is strong

Eficiência da utilização de fungicida na incidência de fumonisinas totais na cultura do milho.

Edição dos Anais do XVII Congresso Brasileiro de Sementes, Natal, 2011

Frações fibrosas e digestibilidades "in vitro" de híbridos de sorgo com capim sudão avaliados em cortes sucessivos.

Foram avaliados doze hibridos de Sorghum bicolor x Sorghum sudanense, utilizados para manejo de corte, quanto as porcentagens de digestibilidade de digestibilidade "in vitro" da materia seca (DIVMS), carboidratos estruturais (FDN, FDA, Celulose, Hemicelulose) e Lignina em tres diferentes idades de corte (44 dias apos o plantio, 30 e 31 dias de rebrota). Utilizou-se um delineamento experimental inteiramente casualizado, com tres repeticoes por tratamento (hibridos). A comparacao das medias foi feita pelo teste Student Newman Keuls a 5% de probabilidade. Os valores percentuais medios para DIVMS, FDN, FDA e lignina foram respectivamente 66,3, 59,6, 33 e 3,4. Os hibridos avaliados apresentaram potencial para utilizacao em corte ou pastejo

Potential Use of Bio-Oleogel as Phase Change Material

Two bio-oleogels were investigated. These materials were produced with a combination of canola and soybean oil with 4, 6, 8, and 10% of beeswax (by weight). Sensible heat storage capacity, melting parameters, and enthalpies were investigated by the differential scanning calorimetry (DSC) test. An ordinary DSC dynamic test was performed. Cycles of heating and cooling were performed, as well as tests with different heating rates. According to the results, the materials present a melting temperature between −16 to −12 °C and a total latent heat between 22.9 and 367.6 J/g. BC10 (canola oil with 10% beeswax) was the sample with the best performance, with a latent heat of 367.6 J/g and a melting temperature of −13.6 °C, demonstrating its possible use as a phase change material for cold storage

BRS Caimbé - variedade de milho precoce.

bitstream/CNPMS-2010/22528/1/Com-173.pd