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| Registros recuperados: 11 | |
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| Protásio, Thiago de Paula; Trugilho, Paulo Fernando; de Siqueira, Humberto Fauller; de Melo, Isabel Cristina Nogueira Alves; Andrade, Carlos Rogério; Guimarães Junior, José Benedito. |
| O objetivo deste estudo foi avaliar pellets torrificados e in natura,produzidos a partir da madeira residual de Pinus, destinados ao uso bioenergético. A compactação da madeira residual de Pinus sp. oriunda de serraria foi realizada em uma peletizadora com matriz plana de 8 mm. As torrefações foram realizadas em forno elétrico, tipo mufla, estabilizado em temperaturas finais de 220 °C e 250 °C por 30 min. Foram determinadas as seguintes propriedades nos pellets: densidades aparente e energética unitárias, densidades a granel e energética do granel, composição química imediata (materiais voláteis, cinzas e carbono fixo), poder calorífico superior e umidade. Observou-se aumento do poder calorífico superior e redução do teor de umidade nos pellets... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Florestais; Engenharia Florestal; Energia da Biomassa Florestal. Densificação; Tratamento térmico; Biomassa florestal; Energia Densification; Heat treatment; Forestry biomass; Energy. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/843 |
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| Cardoso,Antonio Ismael Inácio; Piacenti,Laura Z; Lino,Priscilla R; Padovan,Iasmim M; Kronka,Adriana Z. |
| ABSTRACT In the organic production system, the use of agrochemicals for seed treatment is prohibited. This study was carried out to evaluate the effect of heat treatment and propolis on the germination and vigor of kale seeds and the effect on the control of Alternaria brassicicola. In the treatment with wet thermotherapy, three temperatures (50, 55 and 60°C) were evaluated in separated experiments. For each temperature, five immersion times [0 (control), 15, 30, 45 and 60 minutes] were evaluated. In the dry thermotherapy treatment, seeds were submitted to constant 70ºC temperature and five times [0 (control), 24, 48, 72 and 96 hours] were evaluated. In the treatment with propolis, six concentrations (0.0, 0.2, 0.4, 0.6, 0.8 and 1.0%) were studied, with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var. acephala; Alternative treatments; Heat treatment. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000400363 |
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| Marchi,Francilaine Eloise De; Figueiroa,Fábio José Ferreira; Santos,Geraldo Tadeu dos; Santos,Wallacy Barbacena Rosa dos; Kazama,Daniele Cristina da Silva; Branco,Antonio Ferriani; Leite,Laudí Cunha; Damasceno,Julio Cesar. |
| The objective of this study was to evaluate intake, in vitro and apparent digestibility and ruminal parameters of Holstein cows that were confined and fed corn silage and concentrate containing: ground sunflower seeds (GS); ground sunflower seeds treated with 5% lignosulfonate (GSL); pelleted sunflower seeds (PS); or ground and pelleted sunflower seeds treated with lignosulfonate (PSL). Four lactating cows with 130±28 days of lactation and body weights of 569±63 kg were used. These animals were distributed in a Latin square design with four diets and four periods of 21 days each. There were no differences in the intakes (% body weight) of dry matter (DM), organic matter (OM), mineral matter (MM), crude protein (CP), neutral detergent fiber (NDF) or acid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical treatment; Fat; Heat treatment; Pellet. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900008 |
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| Milaneze,H.S.; Silva,L.S.; Kottwitz,L.B.M.; Zambom,M.A.; Fonseca,L.M.; Guimarães,A.T.B.; Pozza,M.S.S.. |
| ABSTRACT The aim was to evaluate the microbiological, chemical- physical, and shelf-life quality of milk samples after pasteurization (HTST) for 10 days or ultra-high temperature (UHT) treatment for 120 days. Raw milk counts of mesophilic aerobic microorganisms, Staphylococcus spp. and thermotolerant coliforms before HTST and UHT processing were 6.73 and 7.77; 2.84 and 4.30, and 4.68 and 4.37log10, respectively. Pseudomonas spp. were found in raw milk samples. No presence of any other microorganisms studied was detected and no microbial inhibitor was found. Processed samples met microbiological legal requirements. However, aerobic mesophilic counts for HTST pasteurized milk samples stored for 5 and 10 days increased to values comparable to those in raw... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Contamination; Caseinomacropeptide; Heat treatment. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000501625 |
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| Santos,Wallacy Barbacena Rosa dos; Santos,Geraldo Tadeu dos; Neves,Carolina Antunes; De Marchi,Francilaine Eloise; Silva-Kazama,Daniele Cristina da; Ítavo,Luís Carlos Vinhas; Damasceno,Julio Cesar; Petit,Hélène Veronique. |
| Four multiparous Holstein cows averaging 548 kg of body weight and 74 d in lactation were used in a Latin square design with four 21-d experimental periods to determine effects of feeding extruded versus non-extruded canola seed, with or without 50 g/kg lignosulfonate on rumen fermentation, nutrient flow to the omasum, and degradability of dry matter (DM) and N of each diet. The DM effective degradability increased with extrusion and lignosulfonate treatment had no effect. The effective degradability of N was similar between diets. Lignosulfonate treatment of extruded versus non-extruded canola seeds decreased ruminal and total tract apparent digestibility of organic matter. The lowest apparent ruminal and highest intestinal digestibilities of protein,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical treatment; Digestion; Heat treatment; Oilseed. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700026 |
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| Cubillos,Genoveva; Arrué,Ramon; Jeison,David; Chamy,Rolando; Tapia,Estela; Rodríguez,Jorge; Ruiz-Filippi,Gonzalo. |
| The present research examined the effects of initial substrate concentration and pH on the yield and productivity of hydrogen production by acidogenic fermentation. Assays were carried out at three different initial pH levels (5.5, 6.5 and 7.5) and three initial substrate concentrations (3, 5 and 10 g COD/L). Glucose was used as carbon source and the experiments were conducted at 37°C in batch tests, after a thermal pretreatment to eliminate methanogenic microorganisms. Conversions of glucose into hydrogen were between 16.75 and 27.25% of theoretical maximum, and high values of hydrogen productivity were obtained. An optimum value for the yield of glucose between initial pH of 6.3 and 3.7 g COD/L and productivity of the 5.95 H2/gVSS h and initial pH of 6.7... |
| Tipo: Journal article |
Palavras-chave: Acidogenic; Gompertz modified; Heat treatment; Hydrogen; Surface response. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000100011 |
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| Registros recuperados: 11 | |
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