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| Registros recuperados: 13 | |
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| Taniwaki,Ricardo Hideo; Borghi,Tatiana Cintra; Magrin,Albano Geraldo Emílio; Calijuri,Maria do Carmo; Bottino,Flávia; Moschini-Carlos,Viviane. |
| Much remains to be learned about biological diversity, which constitutes a valuable natural resource. Due to the pressure that human activity has put on natural resources, biodiversity has been reduced, often unbeknownst to those responsible for that activity. Therefore, we aimed to perform a quantitative and qualitative analysis of periphytic algae in the Itupararanga reservoir, correlating the results with the physical and chemical characteristics of the water, as well as with climatic conditions. To that end, five samples were collected at four sampling stations in the Itupararanga reservoir during the year 2010. Aquatic macrophytes were collected with a 156-cm² frame, and the periphytic algae were scraped free of the macrophytes with a brush. Samples... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Periphyton; Macrophytes; Water quality; Detrended correspondence analysis; Principal components analysis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300013 |
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| Mata-Miranda,Monica Maribel; Vazquez-Zapien,Gustavo Jesus; Rojas-Lopez,Marlon; Sanchez-Monroy,Virginia; Perez-Ishiwara,David Guillermo; Delgado-Macuil,Raul Jacobo. |
| Abstract Background Kidney diseases are a global health problem. Currently, over 2 million people require dialysis or transplant which are associated with high morbidity and mortality; therefore, new researches focused on regenerative medicine have been developed, including the use of stem cells. Results In this research, we generate differentiated kidney cells (DKCs) from mouse pluripotent stem cells (mPSCs) analyzing their morphological, genetic, phenotypic, and spectroscopic characteristics along differentiation, highlighting that there are no reports of the use of Fourier transform infrared (FTIR) spectroscopy to characterize the directed differentiation of mPSCs to DKCs. The genetic and protein experiments proved the obtention of DKCs that passed... |
| Tipo: Journal article |
Palavras-chave: Pluripotent stem cells; Differentiated kidney cells; Vibrational spectroscopy; Fourier transform infrared; Principal components analysis. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100207 |
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| Adasme-Berríos,Cristian; Jara-Rojas,Roberto; Ramos-Cabello,Bárbara; Rodríguez,Marcelo; Mora,Marcos. |
| The main objective of this article was to analyze consumer responses to agricultural produce advertising. A survey was given to a non-probabilistic sample of 400 consumers in Rancagua, the capital city of the O'Higgins Region. A principal components analysis (PCA) was performed to identify the main factors influencing the consumption of agricultural produce and recognized four factors that influence the consumption of agricultural products: influence of advertising, impact of produce advertising, consumption of vegetables, and advertising preference. Additionally, the market segments that respond to agricultural produce advertising were identified using decision-tree methodology (CHAID). The results show that education is the most important segmenting... |
| Tipo: Journal article |
Palavras-chave: Agricultural produce; CHAID; Consumer behavior; Principal components analysis. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100003 |
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| BOMDESPACHO,Laura de Queiroz; SILVA,Bianca Tanahani Ribeiro da; Lapa-GUIMARÃES,Judite; DITCHFIELD,Cynthia; PETRUS,Rodrigo Rodrigues. |
| Abstract This study evaluated the influence of different Brazilian cultivars (RB867515/C1, SP813250/C2, RB92579/C3 and CTC02/C4) on unprocessed sugarcane juice quality by physicochemical, microbiological and enzymatic analysis. Color parameters were determined during six days at 10 °C. The experimental design was completely randomized with four treatments (cultivars) and three replicates. Significant differences were observed (p ≤ 0.05) among the juice samples from different cultivars. The pH values ranged from 5.09 to 5.25, soluble solids content from 14.13 to 18.60 ºBrix and titratable acidity from 0.035 to 0.120% of citric acid. Counts of mesophiles, psychrotrophs and molds and yeasts varied between 4.8 and 6.2 logCFU mL-1, 3.2 and 4.6 logCFU mL-1 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Non-alcoholic beverage; Enzymatic browning; Principal components analysis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612018000500096 |
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| ZANQUI,Ana Beatriz; SOUZA,Aloisio Henrique Pereira de; GOHARA,Aline Kirie; NISHIYAMA,Márcia Fernandes; RIBEIRO,Ricardo Pereira; SOUZA,Nilson Evelázio de; VISENTAINER,Jesuí Vergílio; GOMES,Sandra Terezinha Marques; MATSUSHITA,Makoto. |
| Abstract The present work aimed at studying the effect of different drying methods applied to tilapia byproducts (heads, viscera and carcasses) fed with flaxseed, verifying the contents of omega-3 fatty acids. Two diets were given to the tilapia: a control and a flaxseed formulation, over the course of 60 days. After this period, they were slaughtered and their byproducts (heads, viscera and carcasses) were collected. These fish parts were analyzed in natura, lyophilized and oven dried. Byproducts from tilapia fed with flaxseed presented docosapentaenoic, eicopentaenoic and docosahexanoic fatty acids as a result of the enzymatic metabolism of the fish. The byproducts from the oven drying process had lower levels of polyunsaturated fatty acids. In the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fatty acids; Omega-3; Lyophilization; Principal components analysis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612016000100018 |
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| Noronha,Rafael H. F.; Zerbato,Cristiano; Silva,Rouverson P. da; Ormond,Antonio T. S.; Oliveira,Mailson F. de. |
| ABSTRACT The peanuts harvesting mechanization is affected by the soil physical characteristics and it may increase the losses due to the production of pods in subsurface. The objective of the experiment was to identify the clusters through multivariate exploratory approaches from similarity in six soil textures (very clayey, clayey, silty clayey loam, clayey loam, sandy loam and sandy) in the state of São Paulo, Brazil, determining the main agronomic variables that most influenced the clustering division to assist the decision-making process in peanuts mechanized harvesting. The data were analyzed by the multivariate exploratory that is performed to simplify the description of a set of interrelated variables, using: yield, maturity, soil and pod moisture... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil textural classes; Arachis hypogaea L.; Principal components analysis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000200244 |
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| Ider, D.; Ramdane, Z.; Mahe, Kelig; Dufour, Jean-louis; Bacha, M.; Amara, R.. |
| Otolith-shape analysis was examined to determine its utility for biological stock identification of the bogue Boops boops along the Algerian coast of the Mediterranean Sea. The outlines of 179 sagittal otolith pairs from fish collected at three locations (Oran, Bejaia and Annaba) between 2013 and 2016 were digitised and analysed for shape variation by elliptical Fourier analysis. Potential confounding sources of variation (fish length, age and sex, and left or right otolith position) were examined and accounted for in the analyses before interpretation of spatial differences in distribution of the stock. Redundancy analysis showed a significant difference between the left and right otoliths. No difference was correlated with sex and age, but fish length... |
| Tipo: Text |
Palavras-chave: Biological stocks; Elliptical Fourier analysis; Image analysis; Linear discriminant analysis; Marine fish; Principal components analysis; Sex differences. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00409/52075/52855.pdf |
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| Bernard, Jean-Thomas; Cote, Bruno. |
| Energy intensity is the ratio of energy use to output. Most industries deal with several energy sources and outputs. This leads to the usual difficulties of aggregating heterogeneous inputs and outputs. We apply principal components analysis to assess the information derived from six energy intensity indicators. We use two measures of total energy use (thermal and economic) and three measures of industry output (value added, value of production, and value of shipments). The data comes from manufacturing industries in Quebec, Ontario, Alberta, and British Columbia from 1976 to 1996. We find that the variation of the six energy intensity indicators that is accounted for by the first principal component is quite large. However, depending on how variables are... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Energy intensity; Aggregation; Principal components analysis; Resource /Energy Economics and Policy; Q40; C43; L60. |
| Ano: 2002 |
URL: http://purl.umn.edu/10544 |
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| Registros recuperados: 13 | |
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