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Effect of dietary energy concentration on performance parameters and egg quality of white leghorn laying hens Rev. Bras. Ciênc. Avic.
Ribeiro,PAP; Matos Jr,JB; Lara,LJC; Araújo,LF; Albuquerque,R; Baião,NC.
An experiment was carried out with 1200 23-week-old white Dekalb commercial laying hens to investigate production responses, egg quality, and energy utilization of laying hens fed different dietary energy levels at the beginning of lay. Birds were housed and divided in five groups of 240 birds according to dietary apparent metabolizable energy corrected for nitrogen (AMEn): 2700 kcal/kg; 2775 kcal/kg; 2850 kcal/kg; 2925 kcal/kg; and 3000 kcal/kg, with six replicates of 40 birds each. Birds were fed the experimental diets based on corn and soybean meal for 17 weeks. Diets were iso-nutritive, except for energy level. Increasing AMEn levels had a negative effect on egg production and egg mass (p≤0.05). AMEn levels did not influence body weight, egg weight, or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Energy conversion; Egg quality; Laying hens.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400007
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Photoelectrochemical solar cell using extract of Eugenia jambolana Lam as a natural sensitizer Anais da ABC (AABC)
Garcia,Christian G.; Polo,André S.; Iha,Neyde Y. Murakami.
The extract of Jambolão (java plum), Eugenia jambolana Lam, was used as a natural sensitizer of a wide band-gap semiconductor (TiO2) in photoelectrochemical solar cells. The natural dye, adsorbed onto the semiconductor surface, absorbs visible light and promotes electron transfer across the dye/semiconductor interface. Photogenerated current and voltage as high as 2.3 mA and 711 mV, respectively, were obtained and effective conversion of visible light into electricity was achieved. The use of a natural product as the semiconductor sensitizer enables a faster and simpler production of cheaper and environmentally friendly solar cells.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Photoelectrochemical solar cell; Natural dye; Jambolão (java plum); Energy conversion; Dye sensitized solar cells.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652003000200004
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