Pom
Mostrando 13-24 de 93 artigos, teses e dissertações.
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13. Quinolines by Three-Component Reaction: Synthesis and Photophysical Studies
The synthesis of five quinolines 8-octyloxy-4-[4-(octyloxy)phenyl]quinoline and 6-alkoxy- 2-(4-alkoxyphenyl)-4-[(4-octyloxy)aryl]quinolines are described by three-component coupling reaction mediated by Lewis acid FeCl3 and Yb(OTf)3. 4-n-octyloxybenzaldehyde, anisaldehyde, 4-n-octyloxyaniline p-anisidine, and 1-ethynyl-4-heptyloxybenzene, 1-ethynyl-4-octylox
J. Braz. Chem. Soc.. Publicado em: 2015-03
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14. Carbon sequestration in clay and silt fractions of Brazilian soils under conventional and no-tillage systems
The capacity of soils to sequestrate carbon (C) is mainly related to the formation of organo-mineral complexes. In this study, we investigated the influence of soil management systems on the C retention capacity of soil with an emphasis on the silt and clay fractions of two subtropical soils with different mineralogy and climate. Samples from a Humic Hapludo
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-08
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15. Improving the mechanical properties of polyamide 6-nanosilica nanocomposites by combining masterbatch technique with in situ polymerization
Um masterbatch (MA) reativo de poliamida 6 (PA6)/SiO2 contendo 20% (fração de massa) de nano-SiO2 foi preparado. Posteriormente, o MA reativo preparado foi usado como carga no preparo de nanocompósitos PA6/SiO2 (RA). A estrutura do RA foi analisada por espectrometria no infravermelho por transformada de Fourier (FTIR), microscopia eletrônica de transmiss
J. Braz. Chem. Soc.. Publicado em: 2014-07
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16. Poultry offal meal in broiler chicken feed
An outstanding feature of poultry production that provides animal protein yield for human feeding is its short production cycle. This characteristic has a linear relationship with waste production. Increasing the inclusion of this residue in diets in the near future is desirable in step with the growth of poultry production since it offers a better environme
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-06
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17. The effect of additives interaction on the miscibility and crystal structure of two immiscible biodegradable polymers
Poly lactic acid (PLLA) is a promising biopolymer, obtained from polymerization of lactic acid that is derived from renewable resources through fermentation. The characteristic brittleness of PLLA is attributed to slow crystallization rates, which results in the formation of the large spherulites. Its glass temperature is relative high, above room temperatur
Polímeros. Publicado em: 2014
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18. Yearly variation of bacterial production in the Arraial do Cabo protection area (Cabo Frio upwelling region): an evidence of anthropogenic pressure
Arraial do Cabo is where upwelling occurs more intensively on the Brazilian coast. Although it is a protection area it suffers anthropogenic pressure such as harbor activities and sporadic sewage emissions. Short-time studies showed a high variability of bacterial production (BP) in this region but none of them evaluated BP during long periods in a large spa
Braz. J. Microbiol.. Publicado em: 2013-12
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19. The use of carbon and nitrogen stable isotopes for the detection of poultry offal meal in meat-type quail feeds
The objective of the present study was to trace the inclusion of poultry offal meal (POM) in the diet of meat-type quails reared for a long period using the technique of stable isotopes. A number of 320 quails were randomly distributed into eight treatments: vegetable diet (T1), and a diet containing 8% POM were fed until the end of the experimental period (
Rev. Bras. Cienc. Avic.. Publicado em: 2013-03
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20. Decomposição de resíduos da colheita e transferência de carbono para o solo em plantações de eucalipto / Harvest residue decomposition and carbon transference to the soil in eucalypt plantations
In Brazil, eucalyptus is planted in regions with different climate and soil conditions, which affect harvest residue decomposition and the rate of carbon transference fromresidues (Cres) to the soil, hence influencing soil organic matter (SOM) content. SOM is considered one of the most important indicators of soil quality and forest production sustainability
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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21. Características quantitativas em matrizes de codorna de corte através de análises multicaracterística
Objetivou-se no presente trabalho avaliar o desempenho produtivo e reprodutivo de diferentes linhagens de codornas de corte, estimando os parâmetros genéticos das características mensuradas. Avaliaram-se dois grupos genéticos UFV2 e UFV1 de matrizes de codorna de corte, sendo o primeiro com 1110 animais e o segundo com 1026. Foram realizadas análises mu
Cienc. Rural. Publicado em: 02/10/2012
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22. Determination of the chemical composition, amino acid levels and energy values of different poultry offal meals for broilers
The aim of this study was to determine the chemical composition, amino acid content and energy values, as well as to quantify the passage rate in the digestive tract of three different poultry offal meals (POM), in two experiments carried out with broilers. In the first experiment, metabolizable energy values were determined (AMEn and TMEn) using the method
Revista Brasileira de Ciência Avícola. Publicado em: 2012-06
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23. Estimação dos componentes de variância para as características de produção e de qualidade de ovos em matrizes de codorna de corte
Dados de dois grupos genéticos UFV1 e UFV2 de matrizes de codorna de corte, com 629 animais no primeiro arquivo e 707 no segundo, foram avaliados pela técnica de componentes principais. Foram consideradas as seguintes características para análise: peso da ave (P1, P2, P3 e P4), peso médio do ovo (POM1, POM2, POM3 e POM4), peso médio da casca (PCM1, PCM
Ciência Rural. Publicado em: 2012-04
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24. Morphology, structure and mechanical properties of polypropylene modified with organophilic montmorillonite
The aim of this work is to study the properties of systems based on polypropylene (PP) and commercial organophilic montmorillonite, prepared by melt intercalation. Because of the non polar character of PP, the polypropylene-graft-maleic anhydride (PP-g-MA) was used as compatibilizer. Materials containing 2.5, 5, 7.5 and 10% of clay and PP, and two extra comp
Polímeros. Publicado em: 27/01/2012