Theory Of The Errors
Mostrando 1-12 de 84 artigos, teses e dissertações.
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1. MODELLING ION TRANSPORT IN AN AMINE SOLUTION THROUGH A NANOFILTRATION MEMBRANE
Abstract The performance of a flat sheet polyamide nanofiltration membrane in rejection of a binary mixture of heat stable salts (acetate and sulfate) from methyl-diethanolamine (MDEA) solution was investigated. The effects of pressure and concentration of MDEA solution on rejection of acetate and sulfate ions were studied. At MDEA concentration of 20% wt. a
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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2. Processo de trabalho: fundamentação para compreender os erros de enfermagem
RESUMO Objetivo Identificar as causas relacionadas ao processo de trabalho que estão associadas aos erros de enfermagem noticiados pelos jornais. Método Estudo documental, qualitativo, baseado na teoria do processo de trabalho e análise hermenêutica. Foram analisadas 112 notícias de 21 jornais de grande circulação no Brasil, no período de 2012 a
Rev. esc. enferm. USP. Publicado em: 19/08/2019
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3. DELINEATION OF HOMOGENEOUS ZONES BASED ON GEOSTATISTICAL MODELS ROBUST TO OUTLIERS
RESUMO Diversas pesquisas utilizam medidas de condutividade elétrica aparente do solo (CEa) como indicador da variabilidade espacial de atributos físico-químicos existentes no campo de produção. Com base nestas medidas, zonas de manejo (ZM) são delineadas para aperfeiçoamento da gestão agrícola. Entretanto, estas amostras têm apresentado presença
Rev. Caatinga. Publicado em: 18/07/2019
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4. Representatividade da amostragem com emprego do trier na caracterização de leiras de compostagem de resíduos sólidos urbanos com base na Teoria da Amostragem de Pierre Gy
RESUMO O objetivo deste trabalho foi avaliar o desempenho do amostrador trier (NBR 10007/2004) na representatividade das propriedades de leiras de compostagem confeccionadas com resíduos sólidos urbanos, no início da degradação dos resíduos (8 dias) e no composto orgânico pronto (120 dias), utilizando como referência um método adaptado à compostage
Eng. Sanit. Ambient.. Publicado em: 30/05/2019
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5. VALIDATION OF COMPUTATIONAL METHODS APPLIED IN MOLECULAR MODELING OF CAFFEINE WITH EPITHELIAL ANTICANCER ACTIVITY: THEORETICAL STUDY OF GEOMETRIC, THERMOCHEMICAL AND SPECTROMETRIC DATA
Models validation in QSAR, pharmacophore, docking, and others, can ensure the accuracy and reliability of future predictions in design and selection of molecules with biological activity. In these study, the caffeine molecule was optimized using Hartree-Fock (HF) and Density Functional Theory (DFT/B3LYP) methods, with seven basis sets. Linear correlation dat
Quím. Nova. Publicado em: 2018-07
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6. Obstáculos de aprendizaje en niños de 10-12 años sobre el tema sistema circulatorio humano: una propuesta teórica en base a evidencias
Abstract: This paper focuses on the investigation of possible origins of learning errors detected in fifth and sixth grade primary school students (10-12 years), in relation to the human circulatory system. Based on the evidence that comes from the analysis of the children’s responses to a questionnaire, a theoretical proposal about cognitive processes inv
Ciênc. educ. (Bauru). Publicado em: 2018-04
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7. AVALIAÇÃO DO USO DE PLANILHAS COMPUTACIONAIS COMO UMA FERRAMENTA DIDÁTICA EM QUÍMICA ANALÍTICA QUALITATIVA
The use of spreadsheet softwares is not widespread in Chemical Education in Brazil as a computational education tool. By its turn the Qualitative Analytical Chemistry is considered a discipline with classical and non-flexible content. Thus in this work the spreadsheet software Excel® was evaluated as a teaching tool in a Qualitative Analytical Chemistry cou
Quím. Nova. Publicado em: 2016-04
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8. Spurious Phosphorus Pyramidalization Induced by Some DFT Functionals
The molecular geometries of boraphosphabenzene (BP-benzene) and boron phosphorus coronene (BP-coronene) can be misinterpreted when they are obtained from density functional theory (DFT) calculations. In this study, we found that some exchange-correlation (XC) functionals yielded a distorted geometry of the above molecules when P atoms are present in their
J. Braz. Chem. Soc.. Publicado em: 2015-08
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9. Prediction of monomer reactivity in radical copolymerizations from transition state quantum chemical descriptors
In comparison with the Q-e scheme, the Revised Patterns Scheme: the U, V Version (the U-V scheme) has greatly improved both its accessibility and its accuracy in interpreting and predicting the reactivity of a monomer in free-radical copolymerizations. Quantitative structure-activity relationship (QSAR) models were developed to predict the reactivity paramet
Polímeros. Publicado em: 20/08/2013
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10. A surface-renewal model of cross-flow microfiltration
A mathematical model using classical cake-filtration theory and the surface-renewal concept is formulated for describing cross-flow microfiltration under dynamic and steady-state conditions. The model can predict the permeate flux and cake buildup in the filter. The three basic parameters of the model are the membrane resistance, specific cake resistance and
Braz. J. Chem. Eng.. Publicado em: 2013-03
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11. Obstáculos à aprendizagem de conceitos algébricos no ensino fundamental: uma tentativa de aproximação entre os obstáculos epistemológicos e a teoria dos campos conceituais / Learning obstacles involved in the learning of algebraic concepts in elementary school: an attempt approach between epistemological obstacles and theory of conceptual fields.
The aim of this study is to examine obstacles and understand difficulties involved in the learning of Algebra in elementary school. The work consists in a review of the academic production and theoretical studies concerning the construction of the idea of obstacles, difficulties and errors in the learning of Mathematics in Brazil and overseas. The analyses o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/08/2012
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12. Desenvolvimento de funções executivas em crianças sem domínio da linguagem escrita e relação com desatenção e hiperatividade / Development of executive functions in children without written language and relationship with inattention and hyperactivity
Executive functions refer to the skills needed to plan, initiate, implement and monitor intentional conduct related to an objective or environmental demands and allows to the subject guide behaviors to as objetive. Include inhibition, working memory, cognitive flexibility, selective attention, planning and organization. Executive functions develop during chi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/08/2011