Experimental Research
Mostrando 25-36 de 1800 artigos, teses e dissertações.
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25. ERRATUM
ABSTRACT Anthurium solitarium Schott is a species that might be used both as potted plant and cut foliage, but it is indispensable to have an adequate substrate to achieve desirable growth and commercial standard. Thus, the present research aimed at evaluating the ornamental potential and commercial quality of Anthurium solitarium grown in bamboo compost. Th
Arq. Gastroenterol.. Publicado em: 2020-06
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26. Ornamental potential and commercial quality of Anthurium solitarium grown in bamboo compost
ABSTRACT Anthurium solitarium Schott is a species that might be used both as potted plant and cut foliage, but it is indispensable to have an adequate substrate to achieve desirable growth and commercial standard. Thus, the present research aimed at evaluating the ornamental potential and commercial quality of Anthurium solitarium grown in bamboo compost. Th
Rev. Ceres. Publicado em: 2020-06
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27. Rheological behavior of plant-based beverages
Abstract The aim of this research was to study the rheological behavior of a plant-based beverage made of Brazil nut (Bertholletia excelsa) and Baru (Dipteryx alata Vogel) and a nut-based beverage made of Brazil nut (Bertholletia excelsa) and Macadamia (Macadamia integrifolia) at the temperatures of 25, 45 and 80 °C. Experimental data were adjusted to the m
Food Sci. Technol. Publicado em: 2020-06
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28. Effects of addition of engineered ZnO nanoparticles on the stability of colloidal suspensions containing TiO2 interacting with sandy soil
Abstract The stability of colloidal suspensions of engineered nanoparticles in the environment is of great interest for the risk assessment and treatment of hazardous materials. The relevance of this study is due to the evidence that engineered nanoparticles have been produced and used in commercial products in large scale, especially ZnO and TiO2, which are
REM, Int. Eng. J.. Publicado em: 2020-06
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29. AVALIAÇÃO DAS DIFICULDADES DOS ESTUDANTES DE GRADUAÇÃO NA ELABORAÇÃO DE RELATÓRIOS DE QUÍMICA EXPERIMENTAL
Scientific reports are important tools for show results of experimental activities undertaken at undergraduate level. The aims of this research were detecting difficulties of undergraduate students in the elaboration of reports in the experimental chemistry subjects of students of the Science: Biology and Chemistry course at the Federal University of Amazona
Quím. Nova. Publicado em: 2020-05
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30. INFLUENCE OF FATIGUE ON BENDING OF Pinus caribaea WOOD
ABSTRACT This research aimed to evaluate the effect of the number of fatigue cycles (NC, 0 – reference, 450, 4500, 45000, and 90000) for frequencies (Fr) of oscillation equal to 0.5 and 1.0 Hz on the modulus of elasticity (Em) and operating stress (σm) in the static bending of Pinus caribaea wood. Em and σm were determined taking into account three speci
Eng. Agríc.. Publicado em: 2020-04
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31. A CONSTRUÇÃO DE CONCEITOS SOBRE GESTÃO E TRATAMENTO DE RESÍDUOS QUÍMICOS: UMA EXPERIÊNCIA DE FORMAÇÃO DE ESTUDANTES DE QUÍMICA
This work aims to analyze the contribution of a training action to the awareness and improvement of the knowledge of students of Chemistry and Chemical Engineering of Universidade Federal do Rio Grande do Sul (UFRGS) courses, regarding the processes of management and treatment of chemical wastes and wastewater generated in the experimental course. The resear
Quím. Nova. Publicado em: 2020-03
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32. Separation of gadolinium and europium from chloride media by the solvent extraction technique
Abstract Obtaining rare earth elements (REE) is a complicated task, due mainly to the difficulty of separating and purifying them. Solvent extraction is the most widely used technique for separating REE, and the most common extractants used are organophosphorus acids. The low selectivity of this technique leads to the need for a high number of extraction cel
REM, Int. Eng. J.. Publicado em: 2020-03
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33. APPARENT DENSITY AS AN ESTIMATOR OF WOOD PROPERTIES OBTAINED IN TESTS WHERE FAILURE IS FRAGILE
ABSTRACT The use of new wood species in construction requires knowledge of their properties for safer and more economical structural sizing. In Brazil, structural projects are carried out according to the standard document ABNT NBR 7190:1997. Tests required by this standard for the complete characterization of species require large machines with high costs,
Eng. Agríc.. Publicado em: 2020-02
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34. PRODUCTIVITY OF IRRIGATED JAMBU UNDER SOIL-WATER STRESSES AND NITROGEN DOSES
ABSTRACT Jambu (Acmella oleracea (L.) R.K.) is a short-cycle leafy vegetable from the Amazon region, which needs an adequate availability of water and nutrients, mainly nitrogen, to obtain a rapid mass increase. This research aimed to study the effect of different soil-water stresses and nitrogen doses on jambu cultivation in the state of Pará. The experime
Eng. Agríc.. Publicado em: 2020-02
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35. Effect of Plasma Arc Welding on Residual Stress and Distortion of Thin Titanium Sheet
In this research work, a finite element model is developed to predict the temperature field and residual stress during plasma arc welding of thin Ti-6Al-4V sheets. Dhinakaran’s heat source model which is based on Parabolic Gaussian distribution is used to predict the temperature field and Anand’s model is used to predict the residual stress. Numerical si
Mat. Res.. Publicado em: 20/01/2020
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36. Um método para publicação semântica Linked Data de bases de dados convencionais e um estudo de caso real de artigos acadêmicos
Resumo Este trabalho propõe, por meio de uma metodologia de pesquisa quali-quantitativa, aplicada e experimental, um método para mapeamento e publicação sistemática de uma base relacional existente, segundo os princípios Linked Data, a partir de um estudo de caso de artigos acadêmicos da conferência interna Semana de Integração Acadêmica de uma un
Transinformação. Publicado em: 20/01/2020