Factorial Analyses
Mostrando 1-12 de 139 artigos, teses e dissertações.
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1. MULTIVARIATE ANALYSIS APPLIED TO SPRAY DEPOSITION IN GROUND APPLICATION OF PHYTOSANITARY PRODUCTS IN COFFEE PLANTS
ABSTRACT An adequate combination of factors involved in the technology used for phytosanitary product application contributes to an efficient spray deposition on the target. The objective of this study was to use multivariate analysis to characterize the magnitude of effects and the order of influence of three factors that interfere with the quality of phyto
Eng. Agríc.. Publicado em: 2021-08
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2. Development of Analytical Method for Determination of Inorganic Constituents in Powder Refreshment Using Dilute Mineral Acids and Detection by ICP OES
An analytical method for multi-elementary determination in powder refreshment, based on sample digestion using dilute mineral acids and detection by inductively plasma coupled optical emission spectrometry (ICP OES) is proposed. Chemometric tools, such as fractional factorial design and principal component analysis (PCA) and hierarchical cluster analysis (HC
J. Braz. Chem. Soc.. Publicado em: 2021-07
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3. Alcoholmeter as a Simple and Accessible Way for Ethanol Determination in Alcohol-Based Hand Sanitizers
Expensive and complex methodologies are available to determine the ethanol concentration in alcohol gel samples. The aim of this article was to demonstrate that alcoholmeter could be used as an alternative method to determine ethanol in gel formulations. Alcohol gel samples were produced using: hydroxypropylmethylcellulose (HPMC), hydroxyethylcellulose (HEC)
J. Braz. Chem. Soc.. Publicado em: 2021-06
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4. Effect of processing, storage and type of glass packaging on the quality of jelly produced from a Brazilian Cerrado fruit
Abstract The objective of this study was to prepare a jelly with the pulp of curriola as raw material and evaluate the effect of processing, type of glass packaging (transparent and amber) and storage time on the quality of the jelly by means of physical (color), chemical (proximal composition, total soluble solids, titratable acidity and pH), microbiologica
Food Sci. Technol. Publicado em: 2020-12
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5. Methyl jasmonate modulation reduces photosynthesis and induces synthesis of phenolic compounds in sweet potatoes subjected to drought
ABSTRACT Sweet potato [Ipomoea batatas (L.) Lam.] has wide adaptability to different climatic conditions. However, its yield can be affected by prolonged periods of drought. Application of exogenous jasmonates can modulate several physiological and biochemical processes, improving plant tolerance to abiotic stress. This study sought to evaluate the role of e
Bragantia. Publicado em: 2020-09
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6. Validation of the Portuguese version of the Community Assessment of Psychic Experiences and characterization of psychotic experiences in a Brazilian sample
Objective: We investigated: i) the reliability and validity of a Brazilian version of the Community Assessment of Psychic Experiences (CAPE), developed to detect and characterize psychotic experiences in the general population; and ii) the association between psychotic experiences, childhood adversity, and cannabis use in a population-based sample. Methods
Braz. J. Psychiatry. Publicado em: 2020-08
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7. Selection to high productivity and stink bugs resistance by multivariate data analyses in soybean
ABSTRACT Stink bugs that affect soybeans are responsible for significant losses in seed production, quality and germination potential, in addition to hindering the mechanized harvest. To develop insect resistant materials, the breeder can compile a selection index by factor analysis. Therefore, the objective of this work was to validate the use of factor ana
Bragantia. Publicado em: 2020-06
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8. Synthesis of a Ce-Based MOF-76 with High Yield: A Study of Reaction Parameters Based on a Factorial Design
The purpose of this work was to optimize the synthesis yield of {[Ce(BTC)(H2O)]·DMF}n, a metal-organic framework (MOF)-76 family member, by solvothermal method. CeCl3.7H2O and 1,3,5-benzenetricarboxylic acid, 2:1 molar proportion, were added to N, N-dimethylformamide (DMF). Reaction time and temperature were evaluated to optimize the synthesis through a fac
J. Braz. Chem. Soc.. Publicado em: 2020-03
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9. Construction and Validation of the Character Strengths Scale for Youth (CSS-Youth)
Resumo Forças de caráter são características individuais positivas que podem ser expressas por meio de pensamentos, sentimentos e ações. Os objetivos deste estudo foram construir um instrumento para avaliar as virtudes e forças de caráter de adolescentes e buscar evidências psicométricas para a escala. Participaram 836 adolescentes entre 14 a 18 an
Paidéia (Ribeirão Preto). Publicado em: 09/12/2019
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10. Características físico-químicas de sucos integrais elaborados a partir de uvas da espécie Vitis rotundifolia
Resumo Objetivou-se com este trabalho avaliar o perfil físico-químico de sucos elaborados com uvas das variedades Vitis rotundifolia Regale, Noble, Summit e Carlos. O trabalho foi realizado na Epagri-Videira/SC, nas safras 2016, 2017 e 2018. O delineamento experimental utilizado foi um fatorial duplo (variedade × safra), de forma inteiramente casualizada
Braz. J. Food Technol.. Publicado em: 14/11/2019
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11. In vitro evaluation of the association of chitosan and cashew nut shell liquid as additives for ruminants
RESUMO Objetivou-se avaliar no presente trabalho a digestibilidade in vitro de nutrientes de diferentes dietas com a adição de quitosana (Q), líquido da casca da castanha de caju (LCC) e a associação entre Q e LCC. Os tratamentos utilizados foram constituídos de 4 dietas (relação volumoso:concentrado, 100:0, 50:50, 40:60 e 20:80) associadas com 4 adi
Rev. bras. saúde prod. anim.. Publicado em: 11/11/2019
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12. Clima motivacional, satisfacción, compromiso y éxito académico en estudiantes angoleños y dominicanos
Resumo O objetivo do estudo foi triplo: validar as versões em português e espanhol da Escala de Orientação e Clima Motivacional (MOC); avaliar a sua invariância métrica em amostras de estudantes dominicanos e angolanos; e estudar as relações das orientações e climas motivacionais com os aspectos educacionais relevantes. Participaram 2.302 estudante
Psicol. Esc. Educ.. Publicado em: 04/11/2019