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| Registros recuperados: 52 | |
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| Boligon,Alexandra Augusti; Lúcio,Alessandro Dal'Col; Lopes,Sidinei José; Cargnelutti Filho,Alberto; Garcia,Danton Camacho. |
| There are various vigor tests for the evaluation of seeds physiological quality, however, few studies correlate this tests with plants emergency. This study aimed at identifying wheat (Triticum aestivum L.) seed analysis variables that best predict seedling emergence. Wheat seeds (CEP 30 cultivar) were divided into two batches, one initially subjected to the accelerated ageing process and forming the low-quality batch, and the other, without application of the accelerated ageing process, to compose a high-quality batch. The following seed test variables were evaluated: (i) percentage of normal seedlings in the germination tests, (ii) initial germination counting, (iii) accelerated ageing, (iv) cold test without soil, (v) germination speed index, and (vi)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stepwise multiple regression analysis; Path analysis; Factor analysis; Seed quality. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000300010 |
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| Botton, Fernanda Scolari; Alessio, Dileta Regina Moro; Busanello, Marcos; Schneider, Catia Letícia Corrêa; Stroeher, Fernanda Hammes; Haygert-Velho, Ione Maria Pereira. |
| This study was realized to evaluate the monthly production, composition and quality of milk (total and defatted dry extract, lactose, fat and protein) and their relation to somatic cell count (SCC) and total bacterial count (TBC) using multivariate statistical analyses. The data are from a dairy farm for the period of two years (from January 2015 to December 2016). The SCC and TBC variables were transformed to somatic cell score (SCS) and log10 (LogTBC). Factor analysis, discriminant analysis and cluster analysis were used. Through factor analysis, it was found two factors that together explained 69.5% of the total data variation. The first factor represented the inverse relationship between lactose versus fat and protein content, while the second factor... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zootecnia; Produção de ruminantes; Manejo animal cluster analysis; Factor analysis; Bos taurus; Fat; Lactose; Protein.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42568 |
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| Silva, Edevaldo; Soares, Delyane Lima; Olveira, Habyhabanne Maia; Vieira, Humarah Danielle Guedes. |
| The objective was to create, validate and apply a measurement scale on environmental practices for teachers of various educational areas (exact sciences, humanities, natural sciences and Portuguese), from six public high schools in the city of Patos, Paraíba. To that end, it was created a questionnaire related to the topic, consisting of 24 items in the Likert scale model, being statistically validated as its consistency and reliability by factor analysis and by the α-Cronbach’s test. The assessed measurement scale has been validated (n = 34) with the exclusion of five items, getting excellent α-Cronbach’s coefficient (0.95). In the application of the questionnaire (n = 68), most teachers had social and environmental practices little consistent with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 92700004; 7.08.00.00-6 ecological attitude; Environmental education; Factor analysis; Teachers 92700004; 7.08.07.00-0. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31561 |
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| Teixeira,Elba C.; Migliavacca,Daniela; Pereira Filho,Sadi; Machado,Andréa C.M.; Dallarosa,Juliana B.. |
| The purpose of this study is to analyze the chemical composition of wet precipitation in samples collected at three stations in the Candiota region in the Brazilian state of Rio Grande do Sul (RS). Samples were collected in 2004. Variables analyzed in wet precipitation were pH, conductivity, and concentration of Cl-, NO3-, SO4(2-) F-, Na+, Ca2+, Mg2+, K+, NH4+, Cu, Zn, Fe, Mn, Pb, Ni, Cd, Co, and Cr. SO2 and NO2 distribution over the time were also evaluated. Results have showed that pH < 5.6 are found mostly at Candiota airport (85%), followed by Aceguá (72%) and Três Lagoas (65%). Enrichment Factor of the studied ions in wet deposition revealed higher Ca2+ and SO4(2-) enrichment in Três Lagoas. Factor Analysis applied to metals and major ions allowed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wet precipitation; Metals; Factor analysis. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000200016 |
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| Sanches,Rafael Egea; Suzukawa,Andréia Kazumi; Contreras-Soto,Rodrigo Iván; Rizzardi,Diego Ary; Kuki,Mauricio Carlos; Zeffa,Douglas Mariani; Albuquerque,Fernando Alves de; Scapim,Carlos Alberto. |
| ABSTRACT In the present study it is hypothesized that the germplasm of popcorn of tropical regions shows resistance to FAW, and the multivariate analysis can characterize the main traits of this resistance. Thus, the aim of this study was to identify key traits used to select fall armyworm resistance in popcorn by using factor and cluster analyses. Sixteen biological traits were evaluated at larval and pupae stages: total number of armyworm, time larval period, final mass of caterpillars, total mass of caterpillars, mean mass of caterpillars, pupae period, mass of pupae and some indices used to evaluate the food consumed by the caterpillars. Multicollinearity diagnosis, factor and canonical analysis, and the genetic divergence among the genotypes were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spodoptera frugiperda; Zapalote Chico; Larval period; Factor analysis; Manova. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000200175 |
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| Wang,Y.-P.; Teng,C.-T.; Vieira Filho,A.H.G.; Gorenstein,C.; Andrade,L.H.. |
| Premenstrual syndrome and premenstrual dysphoric disorder (PMDD) seem to form a severity continuum with no clear-cut boundary. However, since the American Psychiatric Association proposed the research criteria for PMDD in 1994, there has been no agreement about the symptomatic constellation that constitutes this syndrome. The objective of the present study was to establish the core latent structure of PMDD symptoms in a non-clinical sample. Data concerning PMDD symptoms were obtained from 632 regularly menstruating college students (mean age 24.4 years, SD 5.9, range 17 to 49). For the first random half (N = 316), we performed principal component analysis (PCA) and for the remaining half (N = 316), we tested three theory-derived competing models of PMDD by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Premenstrual dysphoric disorder; Premenstrual syndrome; Dysphoria; Factor analysis; Psychometric properties. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000500006 |
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| Registros recuperados: 52 | |
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