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| Registros recuperados: 181 | |
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| Lachambre, Sebastien; Huchette, Sylvain; Day, Rob; Boudry, Pierre; Rio-cabello, Antoine; Fustec, Timothee; Roussel, Sabine. |
| Abalone growth rate is often identified among important traits to improve through selective breeding. However, the rapid success of some selective breeding plans has sometimes led to negative effects in some aquaculture species due to trade-offs. One of them is the loss of homeostasis of selected animals which results in the inability to resist the stress experienced during the rearing process. In this context, this study aimed to analyze the phenotypic relationships between growth, and physiological and behavioural traits in Haliotis tuberculata under stressful conditions. Eleven traits related to growth, immunity, reproduction and behaviour were recorded under laboratory conditions. A total of 120 adults from wild or farm origin were first monitored... |
| Tipo: Text |
Palavras-chave: Haliotis tuberculata; Growth; Behaviour; Physiology; Multivariate analysis; Phenotyping. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00333/44434/44101.pdf |
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| Pereira,Jamil de Morais; Baretta,Dilmar; Bini,Daniel; Vasconcellos,Rafael L. de F.; Cardoso,Elke Jurandy Bran Nogueira. |
| Araucaria angustifolia (Bert.) O. Kuntze is the main component of the Mixed Ombrophilous forest and, in the State of São Paulo, it is associated with a high diversity of soil organisms, essential for the maintenance of soil quality, making the conservation of this ecosystem a major and pressing challenge. The objective of this study was to identify the physical and chemical properties that are most closely correlated with dehydrogenase enzyme activity, basal respiration and microbial biomass under native (NF) and replanted (RF) Araucaria angustifolia forests in three regions of the state of São Paulo, in winter and summer. The main differentiating factors between the areas were also determined. Each forest was represented by three true replications; at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multivariate analysis; Soil quality; Soil chemical properties; Microbiological properties. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000300003 |
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| Firetti,Ricardo; Alberti,Ana Lúcia Luz; Zundt,Marilice; Santos,Aline de Oliveira; Rego,Fabiola Cristine de Almeida; Astolphi,José Luis de Lima. |
| ABSTRACT This paper explored the mix market characteristics of sheep meat as a product for sale in different cities in the states of São Paulo and Paraná. For this, 81 products were purchased in 21 outlets sampled in a “non-probabilistic” manner for convenience and then subjected to analysis of yield of meat, bone, and fat. Imported products represented 20% of the total, being marketed in hypermarkets. It was observed that 37% of the total products were obtained in hypermarkets, 31% in supermarkets, 23% in butcher shops, and 8.6% in meat outlets. Almost 9% of the products had not undergone the official slaughter inspection system. The main types of products identified were palettes and legs with bones (33.3 and 24.7%, respectively); however, only 25% were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lamb; Marketing; Multivariate analysis; Sheep industry. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100700 |
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| Pereira,Jamil de Morais; Segat,Julia Corá; Baretta,Dilmar; Vasconcellos,Rafael Leandro de Figueiredo; Baretta,Carolina Riviera Duarte Maluche; Cardoso,Elke Jurandy Bran Nogueira. |
| ABSTRACT Studies on soil quality in Araucaria forests contribute to understanding changes in this ecosystem and serve as a tool in conserving its biodiversity. The aim of this study was to evaluate the potential of soil macrofauna in discriminating native and replanted Araucaria forests for selection of soil quality indicators. Native (NF) and replanted (RF) Araucaria angustifolia forests were evaluated in three regions of the state of São Paulo, representing three true replications. Fifteen soil samples were collected in each area for evaluation of the physical, chemical, and microbiological properties and the macrofauna through use of monolith excavation and the manual screening method [Tropical Soil Biology and Fertility (TSBF) method]. In addition, we... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multivariate analysis; Biodiversity; Bioindicators. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100423 |
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| Zagatto,Maurício Rumenos Guidetti; Zanão Júnior,Luiz Antônio; Pereira,Arthur Prudêncio de Araújo; Estrada-Bonilla,German; Cardoso,Elke Jurandy Bran Nogueira. |
| ABSTRACT: Soil mesofauna consists of small invertebrates that live in the soil or litter and are sensitive to climatic conditions, management systems, plant cover and physical or chemical soil attributes. These organisms are active in the cycling of nutrients, since they fragment the organic matter hereby accelerating microbial decomposition. The aim of this study was to evaluate the invertebrate community in no-tillage, conventional tillage, minimum tillage and secondary forest in regeneration to determine the relationship of mesofauna to litter, soil attributes, management and seasonality. Therefore, ten soil samples in each system and eight litter samples in no-tillage and the forest were taken over four seasons. These samples remained in Berlese... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diversity; No-tillage; Multivariate analysis; Fauna density; Mites. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001200165 |
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| Carpentieri-Pípolo,Valéria; Pípolo,Antônio Eduardo; Silva,Flávio André Martins da; Petek,Marcos Rafael. |
| Thirty-four soybean lines were assessed for twelve traits. The genetic distances were estimates using multivariate techniques, to identify parents to be included in breeding programs for hybridization. Grouping by the Tocher method, from generalized Mahalanobis distances, divided the 34 lines into four groups. The most important agronomic traits, weight of seeds per plot, plant height, height of first pod and days to maturity were considered when recommending for crossing. The following crosses were recommended based on the genetic divergence and the key agronomic traits: lines 23, 10, 2, 27 and 25 (group I) with genotype 6 (group II) and genotype 16 (group III). Thus only ten crosses would be made, representing only 2% of the total crosses which could be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soybean; Genetic divergence; Mahalanobis; Multivariate analysis. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000300008 |
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| BAPTISTA,D. F.; DORVILLÉ,L. F. M.; BUSS,D. F.; NESSIAMIAN,J. L.. |
| The distribution and abundance of aquatic insects were studied in the longitudinal gradient of the watershed of Macaé River, a coastal Atlantic Forest river in South-eastern Brazil. Sampling stations were selected in the first, second, fourth, fifth, and sixth orders and sampled in April, July, and October 1995. This represented the end of the rainy season, the dry season, and the beginning of another rainy season, respectively. In each month four samples were collected using a Surber sampler from each of the following substrates: sand, litter deposited in pool areas, litter in riffle areas, and stones. A total of 46,431 specimens of aquatic insects belonging to ten orders were obtained. The data were analyzed by the multivariate methodologies of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquatic insect; Longitudinal gradient; Tropical river; Multivariate analysis. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000200012 |
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| Martin,Thomas Newton; Pavinato,Paulo Sérgio; Lorentz,Leandro Homrich; Zielinski,Renice Paula; Refatti,Rosana. |
| This work aimed to evaluate the performance of six genotypes of sunflower under two spatial distributions between plant rows, and verify the cause effect relation between growth features. The experiment was carried at experimental area of Federal Technological University of Paraná (Campus Dois Vizinhos), evaluating six sunflower cultivars and two spatial distributions (40 and 80 cm between rows), remaining the total plant population similar, 55.000 plants by hectare. It was performed a path analysis, identifying the features that have most influence on sunflower grain yield and one hundred grain weight, also multiple regression analysis was used to estimate the equation for grain yield and one hundred grain weight. It was verified that sunflower genotypes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helianthus annuus L; Multivariate analysis; Plant growth. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000200017 |
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| Ribeiro,Felipe O.; Fernandes,Antonio R.; Matos,Gilson S. B. de; Lindolfo,Marcelo M.; Guedes,Rafael S.; Rodrigues,Graziele R.. |
| ABSTRACT This study aimed to define management zones (MZs) for fertirrigated açaí cultivation, based on spatial variability of the foliar nutrients and productivity data. The work was carried out in an area of 5.75 ha of a 7-year crop, with 80 georeferenced sample points. Fresh fruit productivity and nutrient (N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, and Zn) contents were determined. The average contents of macronutrients were considered adequate for adult açaí plants, and their spatial dependence associated with fruit productivity allowed the representation of their distributions through maps of variability. Through multivariate analysis, three main components were highlighted. These components explained 51.5 % of the total variability of the data, where PC1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Management zones; Multivariate analysis; Nutrient contents; Precision agriculture. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000600800 |
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| Soest, R.W.M van; Cleary, D.F.R.; Kluijver, M.J. de; Lavaleye, M.S.S.; Maier, C.; Duy, F.C. van. |
| Sponge diversity and community composition in bathyal cold water coral reefs (CWRs) were examined at 500-900 m depth on the southeastern slopes of Rockall Bank and the northwestern slope of Porcupine Bank, to the west of Ireland in 2004 and 2005 with boxcores. A total of 104 boxcore samples, supplemented with 10 trawl/dredge attempts, were analyzed for the presence and abundance of sponges, using microscopical examination of (sub)samples of collected coral branches, and semi-quantitative macroscopic examination. Approximate minimum size of identified and counted sponge individuals was 1 mm. Literature data were added to the Porcupine Bank results to compensate for a less intensive sampling program in that location. Species richness and abundance were... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coldwater; Multivariate analysis; North Atlantic; Ordination; PCA; Porifera; RDA; 42.72. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/226534 |
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| Silva,Dilma Melo da; Sylvestre,Lana da Silva; Mendonça,Cláudia Barbieri Ferreira; Gonçalves-Esteves,Vania. |
| ABSTRACT The palynological diversity of Blechnaceae in the Atlantic Forest was investigated. While the monophyletic family belongs to the group of leptosporangiate ferns, a new classification proposed by recent phylogenetic study reorganizes the family and adds new genera. To expand palynological knowledge of the group, the spore morphology of 23 species and a hybrid, distributed among 10 genera, was described. Material from herbarium collections were submitted to acetolysis and mounted on slides, with subsequent statistical analysis of spore measurements. Photomicrographs of the material were taken under both light and scanning electron microscopy. Perine ornamentation varied among psilate, rugulate and scabrate; granules and gemmae were present along... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Austroblechnum; Blechnum; Spore; Multivariate analysis; Palynology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300412 |
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| OLIVEIRA,RONE B. DE; ANTUNIASSI,ULISSES R.; GANDOLFO,MARCO A.. |
| This study defined the main adjuvant characteristics that may influence or help to understand drift formation process in the agricultural spraying. It was evaluated 33 aqueous solutions from combinations of various adjuvants and concentrations. Then, drifting was quantified by means of wind tunnel; and variables such as percentage of droplets smaller than 50 μm (V50), 100 μm (V100), diameter of mean volume (DMV), droplet diameter composing 10% of the sprayed volume (DV0.1), viscosity, density and surface tension. Assays were performed in triplicate, using Teejet XR8003 flat fan nozzles at 200 kPa (medium size droplets). Spray solutions were stained with Brilliant Blue Dye at 0.6% (m/ v). DMV, V100, viscosity cause most influence on drift hazardous.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Droplet size; Wind tunnel; Experimental methods; Correlations; Multivariate analysis. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000100109 |
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| Rosa, Franco. |
| Structuring preferences has been developed with econometric models using functional flexible parametric form and the exploring the perceptions about expressed and latent needs using different multivariate approaches. Purpose of this research is to explore the demand for a new drink using the mean-end chain (MEC) theory and multivariate SEM procedure. The first part is dedicated to description of specialty foods for their capacity to create new niche markets. The MEC theory is introduced to explain the relations between attributes and consumers' perceptions of secondary needs revealed as benefit and values. The second part is dedicated to the empirical investigation of demand of a drink obtained from the "Olivello spinoso" a spontaneous plant. Empirical... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Demand; Mean-End Chain; Multivariate analysis; Specialty products; Niche market; Customer satisfaction; SEM; Consumer/Household Economics. |
| Ano: 2002 |
URL: http://purl.umn.edu/24966 |
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| Freitas,Ailane Souza de; Dantas,Beatriz dos Santos; Araújo,Ídila Maria da Silva; Garruti,Deborah dos Santos. |
| RESUMO Devido a sua riqueza em compostos bioativos, sabor exótico, polpa carnuda, pele macia e alto teor de açúcares, o pedúnculo do cajueiro é consumido, tanto na forma in natura quanto destinado à industrialização na forma de sucos e derivados. O objetivo deste trabalho foi avaliar a qualidade físico-química e sensorial de pedúnculos de cinco novos clones de cajueiro e compará-los com dois clones comerciais, de forma a auxiliar a seleção de novos materiais adequados para a comercialização como fruta ou para processamento. Foram avaliados acidez titulável, pH, sólidos solúveis, relação Brix/acidez, ácido ascórbico e polifenois totais. O perfil sensorial foi determinado por análise descritiva quantitativa clássica. Os resultados foram submetidos à Anova,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anacardium occidentale; Quantitative Descriptive Analysis; Multivariate analysis; Caracterization. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300409 |
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| FASIABEN, M. do C. R.; ALMEIDA, M. M. T. B.; MAIA, A. G.; OLIVEIRA, O. C. de; COSTA, F. P.; BARIONI, L. G.; DIAS, F. R. T.; MOREIRA, J. M. M. A. P.; SENA, A. L. dos S.; SANTOS, J. C. dos; LAMPERT, V. do N.; OLIVEIRA, P. P. A.; ABREU, U. G. P. de; GREGO, C. R.. |
| Abstract - Beef production in Brazil is based on a great diversity of production systems. Despite the increasing in recent years, productivity is still low, giving space to technological intensification. The present study used special tabulations of Brazilian Census of Agriculture - 2006 to describe the predominant beef cattle systems, with emphasis on technological variables. Factor analysis and clustering techniques were used together, by biome, covering a universe of 124 thousand farms, 94 million heads of cattle and 86 million hectares of pasture. The results highlight the productivity differences among regions and farms, outlining the farm profiles per biome. Such results can be helpful to support research and technologies transfer, as well as public... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Bioma; Análise multivariada; Análise fatorial; Análise de cluster; Produção de bovinos; Tipificação de municípios; Sistemas de produção; Tipologia de fazendas; Factorial analysis; Farms and Farming Systems; Farming systems; Farm typology; Multivariate analysis; Cluster analysis. |
| Ano: 2020 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1127930 |
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| Registros recuperados: 181 | |
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