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| Registros recuperados: 10.106 | |
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| Mello,José Marcio de; Scolforo,Henrique Ferraço; Raimundo,Marcel Régis; Scolforo,José Roberto Soares; Oliveira,Antônio Donizette de; Filho,Antônio Carlos Ferraz. |
| The sampling technique commonly used in forest inventories is the systematic sampling. This study aimed to evaluate the estimator of the variance of the mean proposed by Cochran for a systematic sampling technique in forests with high and low percentages of the sampled area. The study areas comprised native vegetation in Minas Gerais. To assess the efficiency of the estimators in situations involving high sampling rates (determined as the percentage of the area sampled), a fragment where a census was conducted was used. The remaining fragments comprised situations involving low sampling rates, and for these fragments, inventory accuracy was determined using the Cochran estimator. As a result it was observed, in the fragment where the census was conducted,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sampling; Forest inventory; Minas Gerais. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000100015 |
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| Stefanello,Flávia Santi; Cavalheiro,Carlos Pasqualin; Ludtke,Fernanda Luísa; Silva,Mariana dos Santos da; Fries,Leadir Lucy Martins; Kubota,Ernesto Hashime. |
| Consumers are becoming more aware of the toxicological implications of artificial additives in foods. Natural antioxidants, in addition to reducing the deleterious effects of lipid oxidation, are currently extremely highly valued. This study aimed to invetigate the effect of addition of sun mushroom (Agaricus blazei Murrill) powder on the oxidative and microbiological stability of pork sausage during the shelf life. This powder was used at concentrations of 0.0%, 1.0%, 2.0% and 4.0% in the sausages. Analyses of moisture, protein, ash, fat and microbiological analyses were performed on day 0. The sausages were analyzed on day 0 and every seven days in terms of pH, color, TBARS values and microbiological analyses. The results of the proximal composition... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural antioxidant; Microbial count; Lipid oxidation; Meat product. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000400381 |
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| Dias,Kaio Gonçalves de Lima; Neto,Antônio Eduardo Furtini; Guimarães,Paulo Tácito Gontijo; Reis,Thiago Henrique Pereira; Oliveira,Cesar Henrique Caputo de. |
| Phosphorus (P) is considered one of the nutrients that most limits crop yields, especially in soils with an advanced degree of weathering. To evaluate P dynamics and availability in soil resulting from various P doses and sources and to assess the resulting P content of coffee leaves and the final coffee yield, an experiment was conducted in the municipality of Três Pontas, MG, Brazil, in a Red Argisol (Ultisol) area. Fertilization, except for P fertilization, was performed based on the soil analysis results. The annual P doses tested were 0, 75, 150, 300, 450 and 600 kg ha-1 P2O5. Two P sources, simple superphosphate and magnesium thermal phosphate, were evaluated and compared in the study. A physicochemical analysis of the soil and an analysis of leaf... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffee nutrition; Coffea arabica; Phosphorus fertilization. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000200110 |
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| Pinto,Leandro Campos; Zinn,Yuri Lopes; Mello,Carlos Rogério de; Owens,Phillip Ray; Norton,Lloyd Darrell; Curi,Nilton. |
| ABSTRACTUnderstanding soil formation processes across different landscapes is needed to predict how soil properties will respond to land use change. This study aimed to characterize mountainous Inceptisols (Cambisols) under high altitude subtropical climate in southeastern Brazil, by soil physical, chemical and micromorphological analyses, under native forest and pasture. The soil under pasture had a greater bulk density than under forest, resulting in a severe reduction of macroporosity. At two depths, coarse quartz grains are angular, suggesting absence of transportational processes, thus confirming an autochthonous pedogenesis from the underlying gneissic rock. Most feldspars were weathered beyond recognition, but mineral alteration was commonly seen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil formation; Soil microstructure; Land use change; Forest soils. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000500455 |
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| Teixeira,Patrícia Coelho; Vicentini,Irene Bastos Franceschini; Ferreira,Claudia Maris; França,Fernanda Menezes; Bordon,Isabela Cristina Antunes da Costa; Ranzani-Paiva,Maria José Tavares. |
| Stress is one of the major obstacles in frog culture and can be caused by factors such as inappropriate farming systems; inadequate management among other situations. The objective of the present study was to assess the hemogram, erythrogram and leukogram of bullfrogs (L. catesbeianus) when exposed to stress caused by different types of management: density and handling (manipulation), developed in the laboratory and repeated in the field for the appropriate comparisons in a experimental period of 30 days. The density experiment was conducted with four treatments: 70 animals m-2 (D70); 100 animals m-2 (D100), Control; 150 animals m-2 (D150) and 200 animals m-2 (D200), with 10, 14, 21 and 28 animals/box in the laboratory, respectively. Each treatment was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: L. catesbeianus; Density; Handling; Physiological response; Hematology. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000200154 |
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| Registros recuperados: 10.106 | |
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