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A model to explain high values of pH in an alkali sodic soil Scientia Agricola
Guerrero-Alves,José; Pla-Sentís,Ildefonso; Camacho,Rafael.
For alkali sodic soils (pH>8.5), the "hydrolysis of exchangeable sodium" has been used as a possible explanation for the alkalinity production and rise in pH of these soils. As an alternative to this hypothesis, a model was developed to simulate and to explain that the alkalinity production and rise in pH is possible in a soil that accumulates alkaline sodium salts and CaCO3. Several simulations were performed by using different combinations of CO2 partial pressures (P), presence or absence of MgCO3, along with experimental values of exchangeable sodium percentage (ESP) and ion concentrations in saturation extracts from an alkali sodic soil (named Pantanal). A hypothetical system with similar conditions to the Pantanal soil but with a Gapon selectivity...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gapon selectivity coefficients; Calcium carbonate; Sodium bicarbonate; Alkaline hydrolysis.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000400021
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Biomass production by Arthrospira platensis under different culture conditions Ciênc. Tecnol. Aliment.
Castro,Gabriela Fernandes Pepe da Silva de; Rizzo,Roberta Ferreira; Passos,Thaís Souza; Santos,Beatriz Nascimento Corrêa dos; Dias,Daiana da Silva; Domingues,Josiane Roberto; Araújo,Kátia Gomes de Lima.
In biotechnological processes, the culture media components are responsible for high costs and exert a strong influence on the cyanobacteria behavior. The objective of this study was to evaluate the Arthrospira platensis growth potential for biomass production under different cultivation conditions using an experimental design. Three factors that are important for cyanobacteria growth were evaluated: sodium bicarbonate (9 to 18 g/l), sodium nitrate (1.25 to 2.5 g/l), and irradiance (20 to 120 µmol photons/m2.s–1). The results showed that the concentration of NaNO3 in the A. platensis medium can be reduced, resulting in increased concentrations of biomass produced. There was a higher biomass production due to the increase in the concentration of NaHCO3 and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cyanobacteria; Culture medium; Sodium bicarbonate; Sodium nitrate; Irradiance.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000100018
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Control of Cladosporium echinulatum in carnation using bicarbonates and Trichoderma Ciencia e Investigación Agraria
Sandoval,Claudio; Terreros,Valeria; Schiappacasse,Flavia.
Carnations, Dianthus caryophyllus, have been cultivated in Chile for several decades as a cut flower crop. At the present time, floriculture occupies 2,124 ha, of which 180 ha are devoted to carnations. Almost all carnations produced are sold in the domestic market. Several diseases affect carnations, among them fairyring leaf spot (Cladosporium echinulatum), the most important foliar disease in Chile. Different control alternatives for fairy-ring spot were evaluated on the carnation cv. Sarinah in terms of disease incidence and severity. The study was performed in June-August 2003 with a commercial carnation planting in a greenhouse located in Champa(33° 49' S, 70° 45' W) that in previous growing seasons reported a high incidence of fairyring leaf spot....
Tipo: Journal article Palavras-chave: Carnation; Cladosporium; Dianthus caryophyllus; Foliar diseases; Sodium bicarbonate; Trichoderma.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300015
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Controle do oídio do pepino pelo uso de bicarbonato de sódio em condições de casa de vegetação. Repositório Alice
SANTOS, J. C. P. dos; ZAMBOLIM, L.; CHAVES, G. M.; COSTA, H.; VALE, F. X. R. do.
Avaliou-se o efeito de diferentes doses de bicarbonato de sodio associadas ou nao a aterbane, comparados com um tratamento padrao em duas epocas distintas. Plantas de pepino inoculadas no estadio de folha cotiledonar (plantas de abobora com fonte de inoculo), foram pulverizadas semanalmente, durante oito semanas. As avaliacoes baseadas no numero de lesoes por folha foram executadas a partir da setima semana apos a inoculacao. Ao final, avaliou-se tambem o peso da parte aerea seca. Os dados obtidos foram submetidos a analise de variancia e as medias comparadas pelo teste de Tukey. Os resultados mostraram que o bicarbonato de sodio reduziu significativamente a severidade e o progresso da doenca, igualando-se ao tratamento padrao. A presenca do adjuvante nao...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Controle; Brasil; Diseases control; Bicarbonato de Sódio; Cucumis Sativus; Doença; Erysiphe Cichoracearum; Oídio; Pepino; Sodium bicarbonate.
Ano: 1995 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/667254
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Effect of Dietary Inclusion of Sodium Bicarbonate on Digestibility of Nutrients and Immune Response in Caged Layers During the Summer Rev. Bras. Ciênc. Avic.
Abbas,G; Ahmad,F; Saeed,M; Ayasan,T; Mahmood,A; Yasmeen,R; Kamboh,A.
ABSTRACT The aim of this project was to investigate the effect of dietary inclusion of sodium bicarbonate (NaHCO3) on nutrient digestibility and immune response of caged layers during summer when the temperature exceeds 40 ˚C. For immune response trial, White Leghorn layers (n=160; 24 weeks old) were purchased from a poultry farm and were divided into five treatment/diets groups (4 replicate/treatment). Diet A, was without NaHCO3 and served as control whereas, diets B, C, D, and E contained 0.5, 1.0, 1.5 and 2.0% NaHCO3, respectively. All these birds were vaccinated against Newcastle disease (ND) virus at the start of the experiment and thereafter with one-month intervals. Blood samples were collected from two birds/replicate at 10 days post vaccination...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heat stress; Layers; Newcastle disease; Nutrient digestibility; Sodium bicarbonate.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200339
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Effect of stearic acid on the properties of metronidazole/methocel K4M floating matrices BJPS
Lara-Hernández,Belem; Hernández-León,Alejandra; Villafuerte-Robles,Leopoldo.
The properties of metronidazole/Methocel K4M sustained release floating tablets have been studied varying the proportion of the lubricant, stearic acid, on formulations with and without sodium bicarbonate. The variables studied include technological properties of the tablets such as tablet hardness and ejection pressure, the drug release profile, the hydration kinetics and the floating behaviour. The presence of stearic acid and sodium bicarbonate improves the floating behaviour for more than 8 hours. The hydration volume, the tablet hardness and the ejection pressure decrease as the stearic acid content increases and the polymer content decreases. Drug dissolution increases with increasing proportions of stearic acid and decreasing proportions of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Metronidazole; Methocel K4M; Stearic acid; Matrices hydration; Gastric retention; Sodium bicarbonate; Sustained release; Drugs/release mechanism.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502009000300016
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Effects of an Ionophore Coccidiostat (Monensin or Salinomycin), Sodium or Potassium Bicarbonate, or Both, and Bacitracin Methylene Disalicylate in Broiler Chicken Diets Rev. Bras. Ciênc. Avic.
Hooge,DM; Cummings,KR; McNaughton,JL.
Peterson x Arbor Acres chicks were grown on used litter to 45 or 46 days of age in three pen trials. Coccidial inoculations were given by water at 14 days of age. Sodium bicarbonate (SBC; 0.20%) or potassium bicarbonate (PBC; 0.14%) was added to broiler chicken diets containing monensin (MON; 110 mg/kg) or salinomycin (SAL; 66 mg/kg) in Experiment 1. In Experiment 2, using SAL (55 mg/kg), three dietary bicarbonate treatments (SBC, 0.20%; PBC, 0.20%; or SBC + PBC 0.10% each) were tested with or without BMD R (55 mg/kg). Diets differing in SAL, BMD R, and SBC levels were evaluated in Experiment 3. Beneficial interaction was found between ionophores and bicarbonates for mortality (lower when SBC or PBC and MON) in Experiment 1. For main effects, in Experiment...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacitracin; Coccidiosis; Ionophore coccidiostat; Potassium bicarbonate; Sodium bicarbonate.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100011
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Feed restriction on performance and blood parameters of broilers fed diets with different sodium levels Rev. Bras. Ciênc. Avic.
Junqueira,OM; Fonseca,LEC; Araújo,LF; Duarte,KF; Araújo,CS da S; Rodrigues,EAp.
The experiment was conducted to evaluate the effect of feed restriction and different sodium levels in the diet on the performance and hematological values (erythrocyte, hemoglobin, hematocrit, mean cell volume, mean cell hemoglobin, mean cell hemoglobin concentration and white blood cell) of broilers from 22 to 42 days of age. A completely randomized design was used in a 4 x 2 x 2 factorial (levels of sodium: 0.16%, 0.19%, 0.22% and 0.25%; with or without feed restriction; male and female), and two replicates of thirty broilers each. Sodium levels did not affect performance (p>0.05). Feed restriction resulted in increased feed intake and affected weight gain and feed conversion negatively (p<0.05). Better weight gain and feed conversion (p<0.05)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Blood; Broilers; Feed restriction; Nutrition; Sodium; Sodium bicarbonate.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200003
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Influence of environmental temperature and electrolyte balance on the performance of quails (Coturnix Coturnix Coturnix) Rev. Bras. Ciênc. Avic.
Barbosa Lima,R; Silva,JHV da; Givisiez,PEN; Martins,TDD; Saraiva,EP; Costa,FGP; Macari,M.
High environmental temperatures have a negative effect on the production efficiency of poultry reared in hot climates. This study evaluated the efficiency of electrolyte supplementation under high environmental temperature conditions by manipulating water and feed electrolyte balance (EB) on the survival and performance of European quails. In experiment 1, a completely randomized experimental design was applied in a 4 x 2 factorial arrangement. Treatments consisted in four feed EB values (0, 120, 240, 360 mEq/kg), and two environmental temperatures (25 and 34 ºC). Feed electrolyte balance was manipulated by the addition of sodium bicarbonate and ammonium chloride. In experiment 2, birds were randomly distributed according to a 5 x 2 factorial arrangement....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammonium chloride; Heat stress; Sodium bicarbonate.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300004
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Marinade with alkaline solutions for the improvement of pork quality PAB
Santos,Viviane Maria Oliveira dos; Caldara,Fabiana Ribeiro; Seno,Leonardo de Oliveira; Feijó,Gelson Luis Dias; Paz,Ibiara Correia de Lima Almeida; Garcia,Rodrigo Garófallo; Nääs,Irenilza de Alencar; Altemio,Ângela Dulce Cavenaghi.
The objective of this work was to evaluate the effects of alkaline solution marinades on the characteristics of pork subjected to post-mortem pH decrease in pig muscle. The pH of carcasses was measured in a commercial slaughterhouse (n = 526), 45 min after slaughtering (pH45) and, then, the carcasses were divided into the groups with pH45<5.7 or pH45&gt;5.7. Ten samples of the longissimus dorsi muscles of each group were collected and distributed in an entirely randomized design, in a 2x4 factorial arrangement, with two conditions (pH45<5.7 or pH45&gt;5.7), and four marinade solutions: TC, no marinade; TM1, sodium bicarbonate and sodium chloride; TM2, sodium tripolyphosphate and sodium chloride; TM3, sodium bicarbonate, sodium...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sus scrofa; Meat color; PSE meat; Sodium bicarbonate; Sodium chloride; Sodium tripolyphosphate.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012001100013
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The use of the Fourier Transform Infrared spectroscopy to determine adulterants in raw milk R. Bras. Zootec.
Cassoli,Laerte Dagher; Sartori,Beatriz; Machado,Paulo Fernando.
The objective of this study was to develop calibrations to determine the concentration of some milk adulterants by using the automated methodology of Fourier Transform Infrared (FTIR). For construction of calibrations, samples were collected from 100 farms in the states of São Paulo and Minas Gerais. Samples were tainted with three different adulterants commonly used in the adulteration of raw milk: sodium bicarbonate (SB), sodium citrate (SC) and cheese whey (W). Each adulterant was used at three different concentrations (SB: 0.05, 0.10 and 0.25%; SC: 0.025, 0.050 and 0.075% and W: 5, 10 and 20%). For validation, 60 samples were collected in other farms, which were not considered at the development stage of calibration. Adulterants were added at the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Milk analysis; Non-acid whey; Sodium bicarbonate; Sodium citrate; Tainted milk.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100042
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