Chemical Learning
Mostrando 13-24 de 114 artigos, teses e dissertações.
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13. Digital mapping of soil attributes using machine learning
RESUMO O mapeamento de atributos químicos do solo em larga escala pode acarretar em ganhos no planejamento de uso e ocupação do mesmo. Existem diferentes técnicas disponíveis para tal fim, cujos desempenhos devem ser testados para diferentes situações de paisagem. Objetivou-se neste trabalho espacializar atributos químicos do solo, comparando oito m�
Rev. Ciênc. Agron.. Publicado em: 04/11/2019
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14. STUDENTS BUILDING DIDACTIC EXPERIMENTS AS A TOOL FOR TEACHING UNIT OPERATIONS AND PROCESS CONTROL FOR CHEMISTRY TECHNICIANS
The qualified preparation of technician chemistry students who will act directly in the operation and control of industrial chemical plants is a permanent challenge in the teaching-learning process, since such activities require a broad view of the process and a sum of knowledge’s areas such as unit operations, instrumentation and industrial process contro
Quím. Nova. Publicado em: 21/10/2019
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15. PROPOSIÇÕES DIDÁTICAS PARA O FORMADOR QUÍMICO: A IMPORTÂNCIA DO TRIPLETE QUÍMICO, DA LINGUAGEM E DA EXPERIMENTAÇÃO INVESTIGATIVA NA FORMAÇÃO DOCENTE EM QUÍMICA
This theoretical paper proposes some pedagogical practices that may be applicable by chemical lecturers who teach in Chemistry teacher education courses. Those practices are based on three theoretical ideas: i) Johnstone’s triplet about the three levels of chemical knowledge (macroscopic, microscopic and symbolic) which imposes challenges due to the signif
Quím. Nova. Publicado em: 21/10/2019
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16. ESTRATÉGIAS PARA A INSERÇÃO DE MUSEUS DE CIÊNCIAS NO ESTÁGIO SUPERVISIONADO EM ENSINO DE QUÍMICA
Considering the importance of non-school educational spaces to diffusing scientific knowledge, as well as arguments for the inclusion of such spaces into initial teacher education, this study presents four strategies to make them practice field institutions in chemistry teacher licensure programs. Assuming that the modalities of the educational phenomenon ca
Quím. Nova. Publicado em: 26/08/2019
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17. Retrospective Analysis of Risk Factors for Related Complications of Chemical Ablation on Hypertrophic Obstructive Cardiomyopathy
Resumo Fundamento: A análise dos fatores de risco para previsão de complicações relacionadas não foi relatada até o momento. Objetivo: Este estudo tem como objetivo investigar retrospectivamente os fatores de risco de complicações relacionadas da ablação miocárdica septal transluminal percutânea (PTSMA) para cardiomiopatia hipertrófica obstrut
Arq. Bras. Cardiol.. Publicado em: 01/04/2019
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18. LA PERIODICIDAD DE LOS ELEMENTOS Y EL DESEMPEÑO DE LOS MATERIALES: UN COMPLEMENTO PARA LA COMPRENSIÓN DE LA TABLA PERIÓDICA
The United Nations (UN) has proclaimed 2019 as the International Year of the Periodic Table of Chemical Elements (IYPT 2019). For that reason, it is considered pertinent to highlight the importance of the periodic system in the scientific and technological development of the chemistry; therefore, a discussion of some applications of the periodicity of the el
Quím. Nova. Publicado em: 2019-02
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19. Teaching Chemistry Based on the Stimulus Equivalence Model
Resumo Este estudo teve por objetivo verificar os efeitos de um procedimento, elaborado com base no modelo de equivalência de estímulos, para ensinar a nomear 10 elementos químicos, a partir de suas representações simbólicas e de seus respectivos números e modelos atômicos. Participaram oito alunos do Ensino Médio. Utilizaram-se quatro classes de es
Paidéia (Ribeirão Preto). Publicado em: 31/01/2019
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20. Multivariate Analysis and Machine Learning in Properties of Ultisols (Argissolos) of Brazilian Amazon
ABSTRACT: Ultisols are the most common soil order in the Brazilian Amazon. The Legal Amazon (LA) has an area of 5 × 106 km2, with few accessible areas, which restricts studies of soils at a detailed level. The pedological properties can be estimated more efficiently using statistical procedures and machine learning techniques, tools which are capable of rec
Rev. Bras. Ciênc. Solo. Publicado em: 06/12/2018
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21. Prediction of soil CO2 flux in sugarcane management systems using the Random Forest approach
ABSTRACT: The Random Forest algorithm is a data mining technique used for classifying attributes in order of importance to explain the variation in an attribute-target, as soil CO2 flux. This study aimed to identify prediction of soil CO2 flux variables in management systems of sugarcane through the machine-learning algorithm called Random Forest. Two differ
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-08
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22. A METODOLOGIA DE RESOLUÇÃO DE PROBLEMAS: UMA EXPERIÊNCIA PARA O ESTUDO DAS LIGAÇÕES QUÍMICAS
This article presents an experience of the use of the Problem Solving (PR) methodology with undergraduate students of the Licentiate Course in Chemistry of UFRGS, for the study of Ionic Bonding (LI). Salar de Uyuni salts were used to contextualize the problems employed. The Field Log records of the researchers and the presentations of the undergraduates show
Quím. Nova. Publicado em: 2018-04
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23. GLASSPANACEA: UM SOFTWARE EFICIENTE PARA A FORMULAÇÃO DE MATERIAIS CERÂMICOS
GlassPanacea is an efficient software tool that combines several attractive technical features with ease of use. Its configuration leads to the intuitive handling and learning with accurate results, providing the users with flexibility in the selection of suitable chemicals for the formulation of glassy, partially glassy or crystalline ceramic materials, as
Quím. Nova. Publicado em: 2018-04
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24. UNA DEFENSA DE LA PERSPECTIVA FORMATIVA DEL DESARROLLO PROFESIONAL DOCENTE EN LA PRÁCTICA EDUCATIVA DE LOS PROFESORES DE QUÍMICA
Teachers’ Professional Development (TPD) has been defined as learning opportunities, insights and discussions that improves the personal, social and pedagogical growing of the teachers, whose main goal is the enhancement of their knowledge about teaching strategies and research skills around educational practice. The above topics are needed to change the l
Quím. Nova. Publicado em: 2018-02