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| Registros recuperados: 54 | |
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| Almeida Júnior,Agenor Bezerra de; Nascimento,Clístenes Williams Araújo do; Biondi,Caroline Miranda; Souza,Adailson Pereira de; Barros,Felipe Martins do Rêgo. |
| ABSTRACT Soil contamination by heavy metals threatens ecosystems and human health. Environmental monitoring bodies need reference values for these contaminants to assess the impacts of anthropogenic activities on soil contamination. Quality reference values (QRVs) reflect the natural concentrations of heavy metals in soils without anthropic interference and must be regionally established. The aim of this study was to determine the natural concentrations and quality reference values for the metals Ag, Ba, Cd, Co, Cu, Cr, Mo, Ni, Pb, Sb and Zn in soils of Paraíba state, Brazil. Soil samples were collected from 94 locations across the state in areas of native vegetation or with minimal anthropic interference. The quality reference values (QRVs) were (mg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geochemistry; Soil pollution; Micronutrients; Trace elements. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100509 |
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| van Vliet, Nathalie; Center for International Forestry Research (CIFOR); vanvlietnathalie@yahoo.com; Schor, Tatiana; Geography Department, Universidade Federal do Amazonas; tschor@ufam.edu.br; Tellez, Leady; Independent consultant; leadyjot@hotmail.com. |
| Wild meat is critical for the food security and income of millions of people, especially for poor rural households. Its role as a primary source of macronutrients worldwide has been recognized, but there have been few attempts to evaluate the contribution of bushmeat consumption to micronutrient intake. This is so particularly in the context of nutritional transitions induced by modernization and globalization. Here, we calculated the role of bushmeat as a source of micronutrients in the diets of urban and peri-urban inhabitants within the Tres Fronteras (Peru, Brazil, Colombia) region in the Amazon. We gathered food intake data from 35 households using 3-day 24-h food recalls combined with food weighing. Additionally, we interviewed 105 households on food... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Amazon; Bushmeat; Conservation; Food intake; Micronutrients; Nutrition. |
| Ano: 2015 |
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| Ferri,Valdecir Carlos; Rombaldi,Cesar Valmor; Silva,Jorge Adolfo; Pegoraro,Camila; Nora,Leonardo; Antunes,Pedro Luiz; Girardi,Cesar Luiz; Tibola,Casiane Salete. |
| Flesh softening, skin browning and rotting are chief problems during cold storage (CS) of 'Fuyu' Persimmon. We studied the effects of boron (B) and calcium (Ca) sprayed on the trees during three consecutive years, on the development of skin cracks, grooves and browning in persimmon fruit under CS in Farroupilha, RS, Brazil (29°31' south, 51°21' west, about 750 m altitude). A homogeneous orchard area of 0.5 ha was delimitated and three sets of five plants for each treatment were randomly selected. The persimmon trees were sprayed at a 20 day interval, from 15th January until harvest, for three consecutive years, with: T1) water; T2) calcium nitrate at 0.5% (m/v); T3) calcium chloride at 0.5% (m/v); and T4) boron at 0.3% (m/v). The fruit were harvest with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diospyrus kaki; Postharvest injuries; Micronutrients; Macronutrients. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000800009 |
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| Veiga,Milton da; Pandolfo,Carla Maria; Balbinot Junior,Alvadi Antonio; Spagnollo,Evandro. |
| The objective of this study was to evaluate the pig slurry application effects on chemical attributes of a Hapludox soil managed under no-tillage system. Treatments consisted of 50, 100 and 200 m³ ha-1 per year of pig slurry application, and a control with replacement of P and K exported through harvested grains. Attributes related to soil chemical reaction, exchange complex, and nutrient contents were determined in soil samples collected in the ninth year of experimentation from 0 - 0.025, 0.025 - 0.05, 0.05 - 0.10, 0.10 - 0.20, 0.20 - 0.40 and 0.40 - 0.60 m soil depths. The continuous application of high doses of pig slurry on the Oxisol surface under no-tillage acidifies the soil and increases Al, P, Cu, and Zn contents down to 0.2-m depth, and K levels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acidification; Micronutrients; No-tillage system; Soil fertility; Soil pollution; Soil quality. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012001200013 |
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| Guedes, Mayara Neves Santos; Universidade Federal de Lavras - UFLA; Abreu, Celeste Maria Patto de; Universidade Federal de Lavras; Maro, Luana Aparecida Castilho; Universidade Federal de Lavras; Pio, Rafael; Universidade Federal de Lavras; Abreu, José Renato de; Universidade Federal de Lavras; Oliveira, João Otávio de; Universidade Federal de Lavras. |
| Sensorial attributes such as color, texture, acidity and nutritional composition are essential quality components for blackberry (Rubus spp.). The mineral content and quality of fruits of different blackberry cultivars produced in Lavras, Southern Minas Gerais, in a tropical climate at an elevation (Cwb, according to Köppen) were analyzed. The analyzed minerals were phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), zinc (Zn), manganese (Mn), copper (Cu) and iron (Fe). Additionally, chemical characteristics, the total acidity (citric acid), pH, soluble solids (°Brix) and vitamin C (ascorbic acid) level, and sensory characteristics, color (L*a*b) and firmness (N) were also evaluated. According to the results, the Choctaw and Xavante blackberry... |
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Palavras-chave: 5.07.01.02-9 Rubus spp.; Micronutrients; Macronutrients; Vitamin C Química Física Físico-Química e Bioquímica dos Alim. e das Mat.-Primas Alimentares. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16630 |
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| Reissmann,Carlos Bruno; Radomski,Maria Izabel; Quadros,Ruth Maria Bianchini de. |
| Ilex paraguariensis St. Hil. (erva-mate), the mate tea, is a forest tree whose natural distribution in the Brazilian territory embraces the States of Mato Grosso do Sul, Paraná, Santa Catarina and Rio Grande do Sul. Its economical importance is moreover related to tea production. The purpose of this study is to characterize the leaf chemical composition in relation to different plantation and management conditions. Chemical analysis were performed on plants of different ages,in naturally occurring areas, planted stands, and seedbeds. The most remarkable elements observed in the study were P with average values ranging from 0,5 - 3,2 g kg-1 D.W., Mn values from 346 - 3.330 mg kg-1 D.W., and Al values from 167 - 1.235 mg kg-1 D.W. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macronutrients; Micronutrients; Aluminium; Foliar analysis; Ilex paraguariensis; Erva-mate. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000200009 |
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| Lana,Regina Maria Quintão; Faria,Marcos Vieira de; Bonotto,Ivan; Lana,Ângela Maria Quintão. |
| The concentrated suspension (CS), the basis of Mo trioxide, allows high Mo concentrations and is therefore a technical advance for seed treatment, since it allows the recommendation of the Mo at lower dosage than with the liquid solution formulations (LS). The purpose of this research was to evaluate the efficiency and doses of fertilizer with Mo and Co in concentrated suspension in comparison with liquid solution as well as fertilizers associated with phytohormones, applied in seed treatments, and their effect on soybean yield. Two experiments were carried out in the growing seasons of 2004/2005 and 2005/2006 at the Universidade Federal de Uberlandia (UFU).The first was conducted in an experimental area on the Fazenda Capim Branco, with six treatments and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Micronutrients; Fertilizer technology; Nutrition. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000600020 |
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| Virgolin,Lara Borghi; Seixas,Fernanda Rosan Fortunato; Janzantti,Natália Soares. |
| Abstract: The objective of this work was to evaluate the physicochemical composition, the bioactive compounds, and the total antioxidant activity of the fruit pulps of abiu (Pouteria caimito), achachairu (Garcinia humilis), araza (Eugenia stipitata), bilimbi (Averrhoa bilimbi), and yellow mangosteen (Garcinia xanthochymus) from the Brazilian Amazon biome. Total soluble solid content, total and reducing sugar contents, titratable acidity contents, pH, ascorbic acid content, moisture, protein, lipid, ash, and caloric value were determined. The contents of total anthocyanins, yellow flavonoids, and total carotenoids, besides total phenolic compounds and antioxidant activity, were also evaluated. The abiu pulp showed the highest contents of ash, total sugars,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon biome; Exotic fruit; Fruit physicochemical composition; Macronutrients; Micronutrients. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001000933 |
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| Ribeiro, Fabiana Piontekowski; Bussinguer, Angela Pereira; Hodecker, Barbara Elias Reis; Gatto, Alcides. |
| O estudo foi realizado na Fazenda Água Limpa, DF, em três fisionomias: Cerrado típico, mata de galeria e povoamento de Eucalyptus urograndis, e teve por objetivo analisar o conteúdo de macro e micronutrientes via estoque de serapilheira, durante as épocas seca e chuvosa. Procedeu-se a coleta mensal de serapilheira no período de setembro de 2011 a agosto de 2012. As amostras foram coletadas aleatoriamente, com três repetições em cada fisionomia sendo secas para posterior determinação dos teores de nutrientes. Os resultados foram avaliados por análise de variância, teste de Tukey e correlação de Pearson. Os conteúdos de macronutrientes no estoque de serapilheira na Mata de Galeria e eucalipto apresentaram-se na ordem de N > Ca > K > Mg > S > P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Silvicultura; Ciclagem de nutrientes de Florestas; Recursos Florestais Macronutrientes; Micronutrientes; Eucalypus Macronutrients; Micronutrients; Eucalyptus. |
| Ano: 2017 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1312 |
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| Farias,Luciana Aparecida; Fávaro,Déborah Inês; Santos,José Osman; Vasconsellos,Marina Beatriz; Pessôa,Artemiza; Aguiar,Jaime Paiva Lopes; Yuyama,Lucia. |
| This study evaluated different cooking processes (roasted, cooked and fried) on total mercury (Hg) content in fish species most consumed by Manaus residents and surrounding communities, Amazon region. The results obtained for total Hg in natura and after the three types of preparation (roasted, cooked and fried) for 12 fish species showed a significant Hg concentration variation. In the present study the cooked and frying processes resulted in higher Hg losses for Pacu, Pescada, Jaraqui, Curimatã, Surubin and Aruanã fish species, most of them presenting detritivorous and carnivorous feeding habits. The higher Hg losses in the roasting process occurred for Sardinha, Aracu, Tucunaré, Pirapitinga, Branquinha and Tambaqui fish species, most of them being... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mercury; Cooking processes; Fish; Nutrition; Micronutrients. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672010000400015 |
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| Nascimento,Clístenes Williams Araújo do; Fontes,Renildes Lúcio Ferreira; Melicio,Adilson César Fortes Dias. |
| The knowledge of the chemical forms of copper in soils and the relationships of these forms with soil copper availability are important for predicting the copper behavior in the soil-plant system. The present work studies the influence of liming on the available contents of copper as well as on the forms of copper fractions in six types of Oxisols. Soil samples, with and without liming, received copper at rates of 0.0, 20.0 and 40.0 mg dm-3 and remained incubated for 30 days. Then, available copper was extracted with Mehlich-1, Mehlich-3, DTPA and EDTA solutions, and analyzed by atomic absorption spectrophotometry. Additionally, soil samples were extracted in a sequential procedure to determine Cu in fractions of soil, as follows: exchangeable-Cu fraction,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fractioning; Micronutrients; Soil analysis. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100025 |
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| Grand, Maxime M.; Laes, Agathe; Fietz, Susanne; Resing, Joseph A.; Obata, Hajime; Luther, George W.; Tagliabue, Alessandro; Achterberg, Eric P.; Middag, Rob; Tovar-sánchez, Antonio; Bowie, Andrew R.. |
| Trace metal micronutrients are integral to the functioning of marine ecosystems and the export of particulate carbon to the deep ocean. Although much progress has been made in mapping the distributions of metal micronutrients throughout the ocean over the last 30 years, there remain information gaps, most notable during seasonal transitions and in remote regions. The next challenge is to develop in situ sensing technologies necessary to capture the spatial and temporal variabilities of micronutrients characterized with short residence times, highly variable source terms, and sub-nanomolar concentrations in open ocean settings. Such an effort will allow investigation of the biogeochemical processes at the necessary resolution to constrain fluxes, residence... |
| Tipo: Text |
Palavras-chave: Trace metals; Micronutrients; In situ chemical analyzers; In situ sensors; GEOTRACES; OceanObs'19; Ocean observing time series. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00482/59337/62116.pdf |
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| Madi,Ana Paula Lang Martins; Boeger,Maria Regina Torres; Reissmann,Carlos Bruno. |
| ABSTRACT This study assessed the relation between Cu, Fe, Mn, and Zn in the soils of the mangroves of Antonina and Guaratuba, on the coastline of the State of Paraná, and in the leaf tissues of A. shauerianaR. mangle, and L. racemosa through the analysis of correlation levels between these two compartments. Leaf samples were collected for ten individuals of each species in a 1000 m2 area delimited in each mangrove. Soil samples from 0-10 cm depth were taken from under the crown projection area of the selected trees to be submitted to chemical analysis. In the soils, metallic micronutrients presented the following order: Fe > Mn > Zn > Cu. In the leaves, concentrations were species dependent. InA. shaueriana and R. mangle, the profile was Mn >... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avicennia schaueriana; Laguncularia racemosa; Rhizophora mangle; Mangrove; Micronutrients. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000600970 |
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| Dias,Marcos Altomani Neves; Cicero,Silvio Moure. |
| ABSTRACT Seed treatment is an interesting alternative to deliver micronutrients to field crops. The aim of this study was to investigate the uptake of Cu and Zn by maize seedlings, with the application of the water-insoluble sources copper carbonate and zinc oxide as seed treatment. Treatments were composed of a control (untreated seeds), five doses of copper (0.14, 0.28, 0.56, 1.12 and 2.24 mg Cu∙seed–1) and zinc (0.55, 1.10, 2.20, 4.40 and 8.80 mg Zn∙seed–1) as well as five doses of copper and zinc combined (0.14, 0.28, 0.56, 1.12 and 2.24 mg Cu∙seed–1; 0.55, 1.10, 2.20, 4.40 and 8.80 mg Zn∙seed–1). Plants were cultivated in sand, under greenhouse conditions and, at the two-leaf stage (15 days), the root and shoot tissues dry mass and concentration of Cu... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Corn; Seed treatment; Micronutrients. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000300286 |
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| Registros recuperados: 54 | |
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