Ammoniacal Nitrogen
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. Seasonal performance of aquatic macrophytes in improving physicochemical parameters of swine wastewater
Resumo Os efluentes da suinocultura apresentam elevado teor de carga orgânica e de nutrientes, o que dificulta o seu tratamento. Dessa forma, as macrófitas aquáticas representam uma alternativa para a despoluição desses efluentes, devido ao alto poder de absorção que essas plantas possuem. Neste contexto, o objetivo deste estudo foi avaliar o desempen
Braz. J. Biol.. Publicado em: 09/12/2019
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2. In vitro evaluation of novel crude extracts produced by actinobacteria for modulation of ruminal fermentation
ABSTRACT We evaluated the inclusion of two crude extracts produced by Streptomyces genus on in vitro dry matter and organic matter digestibility (IVDMD; IVOMD), cumulative gas production, volatile fatty acids (VFA), and methane (CH4) and ammoniacal nitrogen (NH3-N) concentration. The experimental design was randomized blocks with three blocks and four treatm
R. Bras. Zootec.. Publicado em: 11/11/2019
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3. Composição granulométrica do filtro ascendente para pós-tratamento de lixiviado de aterro sanitário
RESUMO O lixiviado de aterro sanitário apresenta composição variável e complexa e pode ter elevadas concentrações de nitrogênio amoniacal e matéria orgânica biodegradável e recalcitrante. Devido ao potencial altamente poluidor dos lixiviados estabilizados, além do tratamento biológico convencional, faz-se necessária, em alguns casos, a realizaç
Eng. Sanit. Ambient.. Publicado em: 22/07/2019
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4. Lactobacillus plantarum LPBR01 as inoculant in sugarcane silage
ABSTRACT. Sugar cane is highly productive (dry matter.hectare-1), but after ensiling process nutritional quality is affected, thus additives are needed to control or minimize losses. This study aimed to evaluate if Lactobacillus plantarum LPBR01 strain used as silage inoculant for sugar cane can control fermentation losses. Sugar cane samples (72) were divid
Acta Sci., Anim. Sci.. Publicado em: 04/07/2019
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5. Caffeine as a chemical tracer for contamination of urban rivers
RESUMO A crescente urbanização nos grandes centros urbanos têm contribuído de forma contínua na deterioração da qualidade das águas dos corpos hídricos receptores. Uma nova abordagem para monitoramento da qualidade d’água é o uso de cafeína como traçador de atividade antrópica em rios urbanos, uma vez que seu uso é limitado a humanos e sua m
RBRH. Publicado em: 13/06/2019
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6. Equine fecal inoculum optimization in in vitro fermentation assays of dehydrated roughage
ABSTRACT This study evaluated the influence of coastcross hay substrate hydration and equine fecal inoculum dilution on the parameters of fermentation and microbiology in in vitro essays. A 2 × 2 factorial block design was used. The first factor was hydration of the coastcross hay substrate 12 h before incubation or at the time of incubation, and the second
R. Bras. Zootec.. Publicado em: 22/10/2018
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7. BIOSSENSOR ELETROQUÍMICO BASEADO NA ENZIMA TIROSINASE PARA A DETERMINAÇÃO DE FENOL EM EFLUENTES
AbstractThis work describes the development of a biosensor based on the tyrosinase enzyme (Tyr) for the determination of phenol (PHEN) in laboratory effluent samples derived from ammoniacal nitrogen analysis of the water samples from the Muquém dam in the city of Cariús, CE, using square-wave voltammetry (SWV). The electrode modification consisted of the i
Quím. Nova. Publicado em: 2015-08
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8. Large scale distribution of bacterial communities in the upper Paraná River floodplain
A bacterial community has a central role in nutrient cycle in aquatic habitats. Therefore, it is important to analyze how this community is distributed throughout different locations. Thirty-six different sites in the upper Paraná River floodplain were surveyed to determine the influence of environmental variable in bacterial community composition. The site
Braz. J. Microbiol.. Publicado em: 2014-12
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9. Performance and rumen parameters of crossbred dairy cows fed two sugarcane varieties combined or not with soybean hulls
Two sugarcane varieties (IAC86-2480 and IAC91-2195) combined or not with soybean hulls (SH), partially replacing corn in concentrate, were included in the diet of crossbred dairy cows to evaluate the effects on feed intake, milk production, milk composition and rumen parameters of crossbred cows. The sugarcane varieties (IAC86-2480 and IAC91-2195) and concen
R. Bras. Zootec.. Publicado em: 2014-12
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10. Biological removal of nitrogen on effluent from cattle Slaughterhouse in a sequencing batch reactor / RemoÃÃo biolÃgica de nitrogÃnio de efluente de abatedouro bovino em reator em batelada sequencial
Efluentes agroindustriais oriundos do processamento de carnes sÃo caracterizados por elevados teores de sÃlidos em suspensÃo, compostos orgÃnicos e nutrientes, principalmente nitrogÃnio em suas diferentes formas. A remoÃÃo dos compostos nitrogenados desses efluentes se torna indispensÃvel em decorrÃncia de seu potencial eutrofizante e dos riscos Ã
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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11. Digestion of feed fractions and intake of heifers fed hydrolyzed sugarcane stored for different periods
The objective of this study was to evaluate, in Nellore heifers, intake and digestibility of hydrolyzed sugarcane stored for different periods. The experimental design used was a 4 × 4 Latin square, four diets, four Nellore heifers with ruminal cannulas (initial body weight 285.4±23.08 kg and average initial age 14 months) and four periods of 21 days. The
Revista Brasileira de Zootecnia. Publicado em: 2012-07
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12. Fermentation characteristics and nutritional value of elephant grass ensiled with old man saltbush
The effects of the addition of saltbush on the fermentation characteristics and nutritional value of silages of elephant grass (Pennistum purpureum Schum.) were studied through a completely randomized design with six old man saltbush (Atriplex nummularia Lind) levels (0, 20, 40, 60, 80 and 100 %) in substitution of the grass natural matter, with six replicat
Revista Brasileira de Zootecnia. Publicado em: 2012-06