Nitrogen Immobilization
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. CARBON AND NITROGEN MINERALIZATION IN THE SOIL WITH USE OF SEWAGE SLUDGE AND OAT STRAW / MINERALIZAÇÃO DO CARBONO E DO NITROGÊNIO NO SOLO COM O USO DE LODO DE ESGOTO E PALHA DE AVEIA
The use of sewage sludge in the agricultural is an organic recycle alternative material in the soil. The CONAMA resolution 375/2006 indicates that in certain relief condition the sewage sludge could be applied without soil incorporation, making it possible to use in areas with no-till. The present study was carried out with the aim to evaluate nitrogen and c
Publicado em: 2009
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14. Uréia com NBPT em cobertura na cultura do milho
The urea is subject to significant losses of nitrogen by immobilization, mainly by leaching and volatilization, an alternative to minimize these losses is the pretreatment with an inhibitor of urease, the NBPT [N-(n-butyl) thiophosphoric triamide]. The objective was to evaluate, in a commercial field, the effect of coverage on application of different levels
Publicado em: 2009
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15. Avaliação de desempenho de reator anaeróbio-aeróbio com recirculação da fase líquida no tratamento de água residuária proveniente de abatedouro de aves / Performance evaluation of an anaerobic-aerobic reactor with recycle of the liquid phase for treatment of poultry slaughterhouse wastewater
This work aimed to evaluate the performance of an up-flow fixed bed reactor, operated in a continuous way, using expanded clay and polyurethane foam as supports for immobilization of the biomass, for treatment of poultry slaughterhouse wastewater. Initially, the reactor was operated under anaerobic and anaerobic-aerobic conditions for the treatment of poultr
Publicado em: 2009
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16. Synthesis, characterization and application adsorptive of a new sililante agent immobilized on silica gel by different routes. / Síntese, caracterização e aplicação adsortiva de um novo agente sililante imobilizado na sílica gel por rotas distintas
The reaction between 3-aminopropyltriethoxysilane (AMPTS) with thioglycolic acid (TGA) resulted in a new sililante agent, AMPTGA. This matrix has nitrogen, oxygen and sulfur as basic centers, that have ability to adsorb metallic cations in solution. Immobilization of AMPTGA onto silica gel surface was developed by using conventional heterogeneous method, usi
Publicado em: 2009
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17. Qualidade e decomposiÃÃo de materiais orgÃnicos presentes em propriedades rurais do semi-Ãrido / Quality and decomposition os organic materials found in farms of the semi-arid region of ne Brazil / Qualidade e decomposiÃÃo de materiais orgÃnicos presentes em propriedades rurais do semi-Ãrido / Quality and decomposition os organic materials found in farms of the semi-arid region of ne Brazil
Owners of small farms in the semi-arid region of NE Brazil usually do not use chemical fertilizers to ameliorate soil fertility. Therefore, the nutrients supply for their crops have to rely on soil organic matter mineralization or, in some cases, on the fertilization with animal manure (mostly from cattle or goats). However, the manure produced in these farm
Publicado em: 2009
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18. Histomorphometric analysis of the response of rat skeletal muscle to swimming, immobilization and rehabilitation
The objective of the present study was to determine to what extent, if any, swimming training applied before immobilization in a cast interferes with the rehabilitation process in rat muscles. Female Wistar rats, mean weight 260.52 ± 16.26 g, were divided into 4 groups of 6 rats each: control, 6 weeks under baseline conditions; trained, swimming training fo
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-09
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19. Deposition, chemical composition and decomposition of litter in a sabiá (Mimosa caesalpiniifolia Benth ) canopy / Deposição,composição química e decomposição de liteira em um bosque de sabiá (Mimosa caesalpiniifolia Benth) , Itambé-PE
The objective of this experiment was to evaluate the deposition, chemical composition, and decomposition of litter in a sabiá (Mimosa caesalpiniifolia Benth) canopy. The experiment was carried out at the Experimental Station of Itambé-IPA. The evaluation of existing and deposited litter was carried through the period of August of 2006 until July of 2007, e
Publicado em: 2008
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20. Adubação nitrogenada com uréia e adubos verdes na cultura do arroz e efeito residual no feijoeiro / Nitrogen fertilization with urea and green manures in rice crops and its residual effect in bean crop
The association of green manures and mineral N sources is becoming a promising option for nitrogen fertilizer management, with the objective of recovering the soil fertility, increase of soil organic matter, reduce the loss of mineral N from the readily available sources, and in the case of legume incorporate biologically fixed N to the soil. The objectives
Publicado em: 2008
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21. Biomassa microbiana em diferentes sistemas de manejo do solo e de culturas típicas da região norte do Paraná
The objective of this work was to evaluate the soil microbial biomass (SMB) as a parameter bioindicador of changes in agroecosystem under different soil management and crop rotation systems. The SMB was examined in four different Long-term experiments: In experiment 1: with 26 year-old field experiment established consisting of four systems soil management:
Publicado em: 2008
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22. Fractions of organic matter and decomposition of eucalypt harvest residues in Coastal Plain soils of Bahia, Brazil / Frações da matéria orgânica e decomposição de resíduos da colheita de eucalipto em solos de Tabuleiros Costeiros da Bahia
Eucalypt is the most planted tree in Brazil and to maintain a sustainable forest production it is fundamental do understand the processes of litter decomposition and the impact of eucalypt cultivation on soil organic matter (SOM) fractions. The conversion of planted pastures in eucalypt plantations alters the labile and humified pools of SOM, but little is k
Publicado em: 2008
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23. NITROGEN BIOTRANSFORMATION IN SOIL DURING WHEAT STRAW AND PIG SLURRY DECOMPOSITION / BIOTRANSFORMAÇÕES DO NITROGÊNIO NO SOLO DURANTE A DECOMPOSIÇÃO DE PALHA DE TRIGO E DEJETOS LÍQUIDOS DE SUÍNOS
O nitrogênio é, normalmente, o elemento presente em maior concentração nos dejetos de suínos e também aquele que provoca os maiores problemas de poluição ambiental, em função das inúmeras transformações a que está sujeito após a aplicação dos dejetos ao solo. Este trabalho foi realizado a fim de avaliar as biotransformações do nitrogênio
Publicado em: 2007
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24. Use of microbial reactors contaning immobilized cells on the treatment of the wastewater of a beverage industry. / Utilização de reatores microbianos com celulas imobilizadas no tratamento de efluente de uma industria de bebidas.
The present study the treatment of the waste waters of a beer and soft drink industry by an aerobic biological system was evaluated. The removal of the organic load by means of the quantification of the biochemical oxygen demand (BOD), chemical oxygen demand (COD), total ammoniacal nitrogen, turbidity, sedimented solids (SS), phosphorus (P), conductivity and
Publicado em: 2007