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Registros recuperados: 78
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Absorção foliar pelo capim-tanzânia da amônia volatilizada do N-ureia aplicado ao solo. Repositório Alice
MARTHA JÚNIOR, G. B.; TRIVELIN, P. C. O.; CORSI, M..
Avaliou-se o efeito da dose de N-ureia (40, 80 e 120 kg ha -1 de N) e da distância (0,27 e 35 cm) entre dreno (folhas) e fonte (ureia aplicada ao solo) sobre a absorção foliar de amônia por pastagem de Panicum maximum cv. Tanzânia. Adotou-se um delineamento inteiramente casualizado no esquema de parcelas subdivididas, com quatro repetições. Não houve efeito da distância sobre a absorção foliar de amônia (p>0,05), mas esta diminuiu exponencialmente (p<0,05) com o incremento das doses de N-ureia ou da taxa de volatilização de amônia, variando de 2,5 a 16,4% do N volatilizado.
Tipo: Separatas Palavras-chave: Pastagem tropical; Absorção foliar; Fertilization; Pasture; Foliar absorption.; Adubação; Amônia; Nitrogênio; Panicum Maximum; Solo; Uréia.; Ammonia; Nitrogen; Urea.; Soil.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/567674
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Air Emissions of Ammonia and Methane from Livestock Operations: Valuation and Policy Options AgEcon
Shih, Jhih-Shyang; Burtraw, Dallas; Palmer, Karen L.; Siikamaki, Juha.
The animal husbandry industry is a major emitter of methane, which is an important greenhouse gas. The industry is also a major emitter of ammonia, which is a precursor of fine particulate matter, arguably the number-one environment-related public health threat facing the nation. We present an integrated process model of the engineering economics of technologies to reduce methane and ammonia emissions at dairy operations in California. Three policy options are explored: greenhouse gas offset credits for methane control, particulate matter offset credits for ammonia control, and expanded net metering policies to provide revenue for the sale of electricity generated from captured methane gas. Individually, any of these policies appears to be sufficient to...
Tipo: Working or Discussion Paper Palavras-chave: Methane; Ammonia; Carbon dioxide; Greenhouse gases; Climate change; Offset; Particulate matter; Net metering; Environmental policy; CAFO; Manure management; Biodigester; Electricity; Global warming; Cost-benefit; Incentive approach; Livestock Production/Industries; Q2; Q4; Q53.
Ano: 2006 URL: http://purl.umn.edu/10749
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Alterações em parâmetros ruminais de bezerros alimentados com milho processado (Floculado VS. Laminado a vapor) e Monensina. Repositório Alice
NUSSIO, C. M. B.; SANTOS, F. A. P.; ZOPOLLATO, M.; PIRES, A. V.; FERNANDES, J. J. de R.; MORAIS, J. B. de.
Tipo: Separatas Palavras-chave: Ácido graxos voláteis; Amido degradável; Ionóforo; Degradable starch; Ionophore.; Amônia.; Ammonia; Volatile fatty acids..
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/46042
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AMMONIA ABATEMENT STRATEGIES IN LIVESTOCK PRODUCTION: A CASE STUDY OF A POULTRY INSTALLATION AgEcon
Angus, Andrew J.; Hodge, Ian D.; Sutton, M.A..
This study uses a linear programming approach to compare the potential effectiveness of uniform rules (under the Integrated Pollution Prevention and Control Directive) and a landscape-scale based policy for reducing ammonia (NH3) emissions and their related impacts from a case study poultry installation. The model incorporates a variety of potential NH3 abatement techniques. It also incorporates the first application of a spatial model of the diffusion of environmental impacts from NH3 emissions. This models N deposition at a nearby nature reserve. The model finds that the uniform rules proposed under the Integrated Pollution Prevention and Control Directive are likely to be ineffective in certain contexts and that a landscape-scale approach is more...
Tipo: Working or Discussion Paper Palavras-chave: Ammonia; Integrated Pollution Prevention and Control; Broiler installations; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/31932
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Ammonia determines transcriptional profile of microorganisms in anaerobic digestion BJM
Zhang,Nan; Peng,Huijuan; Li,Yong; Yang,Wenxiu; Zou,Yuneng; Duan,Huiguo.
ABSTRACT Anaerobic digestion is important for the management of livestock manure with high ammonia level. Although ammonia effects on anaerobic digestion have been comprehensively studied, the molecular mechanism underlying ammonia inhibition still remains elusive. In this study, based on metatranscriptomic analysis, the transcriptional profile of microbial community in anaerobic digestion under low (1500 mg L-1) and high NH4 + (5000 mg L-1) concentrations, respectively, were revealed. The results showed that high NH4 + concentrations significantly inhibited methane production but facilitated the accumulations of volatile fatty acids. The expression of methanogenic pathway was significantly inhibited by high NH4 + concentration but most of the other...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic digestion; Ammonia; Pathway; Gene expression; Methanogenesis.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400770
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Ammonia volatilization from soil amended with swine slurry: effect of application method and use of nitrification inhibitor. Repositório Alice
GRAVE, R. A.; NICOLOSO, R. da S.; CORREA, J. C.; CASSOL, P. C.; AITA, C..
Tipo: Separatas Palavras-chave: Fertilizantes nitrogenados.; Nitrificação; Solo; Amonia.; Soil; Nitrification; Volatilization; Ammonia.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/969212
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Amônia em aviário dark house. Repositório Alice
ABREU, P. G. de; COLDEBELLA, A.; FEDDERN, V.; SANTOS FILHO, J. I. dos.
Um dos poluentes aéreos frequentemente encontrados em altas concentrações nos aviários é a amônia a qual é considerada o gás mais prejudicial na produção de aves. Dessa forma, objetivou-se avaliar a concentração de amônia no ar em aviário dark house. Os dados de concentração de amônia no ar foram coletados em 27 pontos no sentido longitudinal do aviário, à altura das aves, no primeiro e nos 21 e 42 dias de vida por seis lotes consecutivos. De acordo com os valores de amônia em cada ponto, foi realizada análise geostatística utilizando o software GS+&#1048723;. A partir da análise espacial foram confeccionados mapas de isolinhas das medidas de amônia utilizando o software SURFER&#1048723;. A distribuição de amônia foi heterogênea ao longo do aviário...
Tipo: Separatas Palavras-chave: Avicultura; Frango de corte; Aviário; Amônia; Aviaries; Broiler chickens; Ammonia.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1013875
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An experiment on the relative importance of denitrification, nitrate reduction and ammonification in coastal marine sediment OMA
Goeyens, L.; De Vries, R.T.P.; Bakker, J.F.; Helder, W..
Simultaneous determinations of <sup>15</sup>N-nitrogen gas production, <sup>15</sup>N-ammonia formation by nitrate reduction and ammonia production from organic nitrogen were carried out after addition of <sup>15</sup>N-nitrate to anaerobically incubated sediment slurries from a location in the Dutch Wadden Sea. The rate of nitrogen gas production was 1.75 µmol N.cm<sup>-3</sup> wet sediment.d<sup>-1</sup>, nitrate reduction to ammonia occurred to a rate of 0.79 µmol N.cm <sup>-3</sup>.d <sup>-1</sup> and ammonification at 1.17 µmol N-cm <sup>-3</sup>.d <sup>-1</sup>. At the end of the incubation experiment (after 30 h) 63% of the originally added...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammonia; Biogeochemical cycle; Coastal zone; Denitrification; Nitrates; Nitrogen cycle; Sediments.
Ano: 1987 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3169
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Avaliação da volatilização de amônia utilizando diferentes procedimentos de aplicação do fertilizante no solo. Repositório Alice
MORASI, I. M.; SOUZA, R. H. A. de; MOLTOCARO, R. C. R.; MAXIMILIANO, V. C. B.; PACKER, A. P..
Resumo: A determinação da amônia volatilizada proveniente da aplicação de fertilizantes nitrogenados vem sendo quantificada por diferentes metodologias. Dentre os métodos baseados na captura da amônia volatilizada do solo, em meio ácido, existe a câmara SALE (Câmara Semiaberta Livre Estática) de baixo custo confeccionada com garrafas PET. Duas formas de dispersão das amostras de ureia sobre o solo foram avaliadas, utilizando um gabarito (0,60 m x 0,15 m) para adubação de 21,5 g de fertilizante por planta e a delimitação da quantidade aplicada a área de abertura da câmara SALE (0,008 m2), utilizando uma estrutura metálica para fixação das câmaras. Para isto, o experimento foi delineado com 3 tratamentos com 5 repetições, um tratamento testemunha sem...
Tipo: Separatas Palavras-chave: Volatização de amônia; Metodologia de aplicação de fertilizantes; Câmera SALE; Amônia; Fertilizante nitrogenado; Solo; Ammonia; Volatilization; Nitrogen fertilizers.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036333
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Bakery waste in sheep diets: intake, digestibility, nitrogen balance and ruminal parameters R. Bras. Zootec.
França,Almira Biazon; Morenz,Mirton José Frota; Lopes,Fernando César Ferraz; Madeiro,Afranio Silva; Morenz,Danilo Antônio; Faria,Bruna Moscat de; Cabral,Luciano da Silva; Fonseca,Carlos Elysio Moreira da.
The objective of the study was to evaluate the effects of bakery waste inclusion (0; 25; 50; 75 and 100%, DM basis) in proportion to corn meal in the energetic mixture of the concentrate on intake, digestibility, nitrogen balance and ruminal parameters in sheep. Five male lambs with body weight of 30 kg were used in a 5 × 5 Latin square design. Experimental diets were composed of concentrate and Tifton 85 (Cynodon spp.) hay in a 60:40 forage:concentrate ratio. The concentrate rations were composed of corn meal, soybean meal and bakery waste. The bakery waste:corn meal ratio corresponded to the inclusion of, approximately, 0, 7, 14, 22 and 30% (DM basis) of bakery waste in the diet. There was no effect of bakery waste inclusion on the intake and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammonia; Byproduct; Lamb; PH; Volatile fat acid.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000100022
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Bakery waste in sheep diets: intake, digestibility, nitrogen balance and ruminal parameters. Repositório Alice
FRANÇA, A. B.; MORENZ, M. J. F.; LOPES, F. C. F.; MADEIRO, A. S.; MORENZ, D. A.; FARIA, B. M. de; CABRAL, L. da S.; FONSECA, C. E. M. da.
Tipo: Separatas Palavras-chave: Byproduct; Lamb; Volatile fat acid; Ph; Ammonia.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/912676
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Biological efficiency of Agaricus brasiliensis cultivated in compost with nitrogen concentrations Horticultura Brasileira
Siqueira,Félix G de; Martos,Emerson T; Silva,Evânia Geralda da; Silva,Romildo da; Dias,Eustáquio S.
The production of compost is one of the most important steps for the cultivation of any species of mushroom. For the Agaricus species, this step is even more complex because it depends on the performance of different microorganisms that act on the substrate, turning it into selective compost that promotes the growth of the fungus to be cultivated. Among the various factors that affect the microbial activity, the initial concentration of nitrogen is considered one of the most important. Due to the lack of conclusive studies about that, the aim of this study was to evaluate the productivity and biological efficiency of Agaricus brasiliensis in compost prepared with different initial concentrations of nitrogen, according to the composting methodology and to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Composting; Mushroom cultivation; Ammonia; Nitrogen concentration.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000200004
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Biological nitrogen fixation of common beans reduces emission intensity in an integrated crop-livestock system on a Ferralsol of the brazilian savannah. Repositório Alice
SOUSA, A. A. de; NASCIMENTO, F. P. de; CARVALHO, M. T. de M.; FERREIRA, E. P. de B.; ARAÚJO, W. A. de; SIQUEIRA, M. M. de B.; FREITAS, W. F. de; SILVEIRA, P. M. da; MADARI, B. E..
The objective of the study was to evaluate the effect of biological nitrogen fixation (BNF) and mineral nitrogen (N) on the emission of nitrous oxide (N2O), volatilization of ammonia (NH3) and production of common beans in an integrated crop-livestock system (ICL). The ICL system has about 8 ha, was implemented in 2011/2012 on a clay soil in an experimental area of Embrapa Rice and Beans, in the municipal area of Santo Antônio de Goiás, Goiás State, Central West region of Brazil. The treatments were without application of N (CONTROL); beans inoculated with N-fixing bacteria (Rhizobium sp.) and growth promoters (Azospirillum sp.), without the addition of mineral N (BNF); Mineral N (urea) applied according to standard recommendation (65 N); and mineral N...
Tipo: Parte de livro Palavras-chave: Integração lavoura-pecuária-floresta; Cerrado; Amônia; Oxido; Fixação de Nitrogênio; Feijão; Phaseolus Vulgaris; Nitrous oxide; Ammonia; Nitrogen fixation; Beans.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1134892
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Chemical treatment of post-harvest Marandu grass seed residues with different moisture contents R. Bras. Zootec.
Roth,Marcella de Toledo Piza; Reis,Ricardo Andrade; Resende,Flávio Dutra de; Siqueira,Gustavo Rezende; Pires,Aureliano José Vieira; Bertipaglia,Liandra Maria Abaker.
The objective of this was to evaluate the effect of chemical treatments with urea (3 or 5% DM) and anhydrous ammonia (3% DM) applied to the post-harvest hay residues of Brachiaria brizantha cv. Marandu that contained different moisture contents (15, 25 or 30%). A randomized block design was used with eight treatments and four replications (defined as the bale layers within the hay stacks). The hay treated with 3% anhydrous ammonia and 15% moisture content reduced the levels of neutral detergent fiber (NDF) from 84.3 to 79.1% and increased the in vitro digestibility of the dry matter (DM) from 37.3 to 55.5% compared to the control group. The variation in the moisture content did not significantly alter the action of ammonia, with mean values of 77.6% NDF...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammonia; Carbohydrate fractionation; Nitrogen fractionation; Nutritional value; Urea.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300005
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Chemical treatment of roughage R. Bras. Zootec.
Pires,Aureliano José Vieira; Carvalho,Gleidson Giordano Pinto de; Ribeiro,Leandro Sampaio Oliveira.
Chemical treatment of roughage has been the aim of studies for a long time. However, until nowadays, many questions are arisen due to the efficiency of additives used in relation to the variation of answers, either in nutritive value of treated roughage or in performance of animals feed with diet containing such roughage. This revision will approach the main and most used products, which are anhydrous ammonia, urea, sodium hydroxide and calcium oxide. It has been noticed that ammonization (both for anhydrous ammonia and urea) has presented more efficient result in animal's performance when compared with sodium hydroxide or calcium oxide. However, regarding its nutritive value, both sodium hydroxide and calcium oxide have presented a higher efficiency in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammonia; Calcium oxide; Sodium hydroxide; Urea.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300022
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Combined effect of external ammonia and molt stage on the blue shrimp Litopenaeus stylirostris physiological response ArchiMer
Mugnier, Chantal; Justou, Carole.
The effect of ambient ammonia and molt stage on the physiological response of the blue shrimp Litopenaeus stylirostris was studied. Shrimps were submitted to 54.6 mg l(-1) ammonia-N (1.76 mg l(-1) NH3-N) for 24 h. Only shrimps in stages C, D-0, D-1 and D-2 were used for the analysis. Haemolymph was assayed for osmoregulatory capacity (OC), magnesium ion (Mg ion), total proteins, oxyhaemocyanin, lactate and glucose. Molt stage had an effect on OC, Mg ion and total proteins in control shrimps, and on OC, Mg ion and lactate in treated animals. Ammonia treatment decreased OC and lactate, and increase Mg ion concentration in haemolymph, for all molt stages. It decreased significantly total proteins and oxyhaemocyanin for stages D-1 and D-2, and increased...
Tipo: Text Palavras-chave: Stress; Peneid shrimp; Molt stage; Litopenaus stylirostris; Haemolymph constituents; Ammonia.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-371.pdf
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Comparison of brown trout (Salmo trutta) reared in fresh water and sea water to freshwater rainbow trout (Oncorhynchus mykiss) .1. Growth and nitrogen balance ArchiMer
Dosdat, Antoine; Metailler, Robert; Desbruyeres, Elisabeth; Huelvan, Christine.
Brown trout and rainbow trout (average weight 100 g) were reared in fresh water at 12 degrees C under the same conditions before transfer of brown trout to sea water, in order to compare nitrogen utilisation in the two species. Apparent protein digestibility (ADC), nitrogen (ammonia and urea) excretion, protein productive value (PPV) and actual observed nitro en mass balance were determined. Rainbow trout raised in fresh water had a higher growth rate (1.1 vs 0.8%. d(-1)), better food conversion ratio (0.7 vs 1.0), better ADC (91 vs 85%) and PPV (45 vs 35%) and lower ammonia excretion rates than brown trout reared in fresh water. Transferring brown trout to sea water induced lower PPV (30%) and ammonia and urea excretion. Salinity did not modify metabolic...
Tipo: Text Palavras-chave: Truite commune; Truite arc-en-ciel; Excrétion; Ammoniaque; Urée; Digestibilité; Croissance; Rétention protéique; Rainbow trout; Brown trout; Excretion; Ammonia; Urea; Digestibility; Growth; Protein productive value.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00188/29885/28342.pdf
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Concentração de amônia no rúmen de vacas mestiças holandês-zebu, em pastagem de capim-elefante (Pennisetum purpureum, Schum.) na estação das chuvas. Repositório Alice
LOPES, F. C. F.; AROEIRA, L. J. M.; DERESZ, F.; NASCIMENTO, J. L..
Tipo: Artigo de periódico Palavras-chave: Capim-elefante; Elephant grass; Amônia; Bovino; Rúmen; Ammonia; Cattle.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/593107
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Deammonification reaction in digested swine effluents. Repositório Alice
VANOTTI, M.; KUNZ, A.; MARTINEZ, J..
Tipo: Separatas Palavras-chave: Dejeto animal; Tratamento de efluentes; Swine manure.; Suíno; Amônia; Biogás; Ammonia; Wastewater treatment..
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/969955
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Distribución espacial del amonio en fiordos y canales comprendidos entre Puerto Montt y Laguna San Rafael en período de primavera OceanDocs
Prado-Fiedler, R..
An oceanographic expedition was carried out between October 18th and November 15th 1995 in the inlets region and fjords located between Puerto Montt (41° 20’S and San Rafael Lagoon (46° 40’ S) in Southern Chile. The main purpose of the present work is to characterise the spatial distribution of ammonium and its concentration range in the studied region during spring onset. Water samples were collected from a total of 101 oceanographic stations of the expedition Cimar-Fiordo 1. The main part of the water body showed concentrations lower than 1 µmol/L. The higher ammonium concentrations were found in the continental fjords, specially in the area situated south of the narrows of Meninea island, where subsurface maximums greater than 2 µmol/L were found. The...
Tipo: Journal Contribution Palavras-chave: Fjords; Water properties; Ammonia; Water content; Channels; Water analysis; Water sampling; Surface layers; Core layers (water); Sea water; Fjords; Water content; Ammonia; Water analysis; Sea water; Http://aims.fao.org/aos/agrovoc/c_16314; Http://aims.fao.org/aos/agrovoc/c_15852; Http://aims.fao.org/aos/agrovoc/c_349; Http://aims.fao.org/aos/agrovoc/c_16064; Http://aims.fao.org/aos/agrovoc/c_6903.
Ano: 2000 URL: http://hdl.handle.net/1834/1576
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