Principle
Mostrando 25-36 de 2989 artigos, teses e dissertações.
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25. Bioética: bússola para guiar nosso caminho
The beneficial effects of humic substances (HS) on crop development have been evidenced in the last decade, leading to the commercialization of HS products with fertilizing properties. Currently, three methods are frequently used for HS determination: method described in the manual of the Brazilian Ministry of Agriculture, Livestock and Supply (MAPA); method
Rev. Bioét.. Publicado em: 2020-09
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26. BOOK REVIEW: GUYER, PAUL. Kant on the Rationality of Morality (Cambridge University Press, 2019, 73p. )
Abstract I discuss Paul Guyer’s contribution to the Cambridge Elements: The Philosophy of Immanuel Kant series. The author argues that Kant derives the fundamental principle and the object of morality from the fundamental principles of reason (the law of noncontradiction, of excluded middle and the principle of sufficient reason). I provide an overview of
Manuscrito. Publicado em: 2020-06
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27. Fast and Ecological Liquid-Liquid Separation Method for Preparing Quinones Enriched Extract from Nigella sativa Oil
A fast, inexpensive, and ecological method based on liquid-liquid extraction principle has been developed for preparation of extract with high content of Nigella sativa (N. sativa) quinones. The gas chromatography-mass spectrometry (GC-MS) analysis showed that oil extraction using 70% ethanol for 6 h yielded extract containing 50% of thymoquinone (TQ) and 13
J. Braz. Chem. Soc.. Publicado em: 2020-04
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28. Editar Machado de Assis
In this work, a systematic study of 17α-ethinylestradiol and estrone molecules interacting with single wall carbon nanotube is presented by means of first principle calculations. The structural properties, binding energy, charge transfer, and electronic properties were calculated and analyzed to characterize the effect of interaction of 17α-ethinylestradio
Machado Assis Linha. Publicado em: 2020-04
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29. Ab initio Study of 17α-Ethinylestradiol and Estrone Molecules Interacting with Single Wall Carbon Nanotube
In this work, a systematic study of 17α-ethinylestradiol and estrone molecules interacting with single wall carbon nanotube is presented by means of first principle calculations. The structural properties, binding energy, charge transfer, and electronic properties were calculated and analyzed to characterize the effect of interaction of 17α-ethinylestradio
J. Braz. Chem. Soc.. Publicado em: 2020-04
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30. An Extension of the Invariance Principle for Switched Affine System
RESUMO Neste artigo, uma abordagem para investigar o sistema chaveado afim por meio de desigualdades matriciais é apresentado. Particularmente, uma extensão do princípio de invariância de LaSalle para esta classe de sistemas sob sinal chaveamento dwell-time arbitrário é apresentado. Os resultados propostos empregam uma função escalar auxiliar comum e
TEMA (São Carlos). Publicado em: 2020-04
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31. Two-dimensional beams in rectangular coordinates using the radial point interpolation method
Abstract The three-dimensional Theory of Elasticity equations lead to a complex solution for most problems in engineering. Therefore, the solutions are typically developed for reduced systems, usually symmetrical or two-dimensional. In this context, computational resources allow the reduction of these simplifications. The most recognized methods of algebraic
REM, Int. Eng. J.. Publicado em: 2020-03
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32. Sixteenth-Mode Substrate-Integrated-Waveguide (SMSIW) Resonator for Dielectric Characterization of Liquid Mixtures
Abstract In this work, a new concept of planar resonator technique for measurement of liquid mixture permittivity is proposed, designed, and implemented using a Sixteen-Mode Substrate Integrated Waveguide (SMSIW) technology. To design the proposed sensor, the conventional SMSIW resonator is designed with an additional air hole on the open side, and then we a
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-03
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33. Investigação da variação de pressão em sistemas de vazão lateral através do princípio de Bernoulli
Resumo Especificamente, investigamos a variação de pressão ocorrido em sistemas simples de vazão lateral através do princípio de Bernoulli. Tal sistema de fluido é definido por um escoamento interno e externo a um recipiente de área de secção transversal constante, através de um orifício localizado em sua lateral. O escoamento pode ser controlado
Rev. Bras. Ensino Fís.. Publicado em: 20/01/2020
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34. MAXIMIZATION OF ESSENTIAL OIL ANTIOXIDANT CAPACITY VIA STAR ANISE HYDRODISTILLATION
Abstract Chinese star anise essential oil (EO) is prized for its pleasant aroma and mainly due to its antioxidant capacity (AC), which can combat cancer and treat neurodegenerative diseases. This study shows the innovative approach of optimizing not only EO yield, but also to therapeutic activity. The product obtained follows the principle of the Pure Food a
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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35. A NEW COMPUTATIONAL FLUID DYNAMICS STUDY OF A LIQUID-LIQUID HYDROCYCLONE IN THE TWO PHASE CASE FOR SEPARATION OF OIL DROPLETS AND WATER
Abstract A liquid-liquid hydrocyclone, so-called de-oiling equipment, was investigated for separation of oil droplets and wastewater in an Iranian petroleum unit. To generate the geometry and the mesh of the hydrocyclone Gambit software was used. Afterwards, by taking advantage of the Euler-Lagrangian principle, the governing equations covering the motion of
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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36. Roberto Schwarz e a sociologia paulista dos anos 1960
RESUMO O artigo apresenta a hipótese de que, ao identificar a “volubilidade” como princípio formal do romance Memórias póstumas de Brás Cubas, de Machado de Assis, Roberto Schwarz estaria se posicionando frente às divergências entre Maria Sylvia de Carvalho Franco e Fernando Henrique Cardoso em torno da mobilização da categoria “patrimonialism
Rev. Inst. Estud. Bras.. Publicado em: 10/01/2020