Pendulum
Mostrando 1-12 de 126 artigos, teses e dissertações.
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1. A Spectral Clustering Approach for the Evolution of the COVID-19 Pandemic in the State of Rio Grande do Sul, Brazil
ABSTRACT The aim of this paper is to analyse the evolution of the COVID-19 pandemic in Rio Grande do Sul by applying graph-theoretical tools, particularly spectral clustering techniques, on weighted graphs defined on the set of 167 municipalities in the state with population 10,000 or more, which are based on data provided by government agencies and other so
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. GALILEO’S PENDULUM AS A MAGNETIC BALANCE FOR STUDYING CHEMICAL MAGNETISM AT HOME
A very simple, but rich experiment, encompassing a classical Galileo’s pendulum, has been devised to be performed at home, especially during the Covid-19 pandemics. The experiment uses a miniature supermagnet rod as the pendulum oscillating element suspended from a fixed sewing thread. Its physics can be fully investigated, allowing to study the oscillatio
Quím. Nova. Publicado em: 2021-01
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3. Análise dialélica de sementes de pimenta “dedo-de-moça” em relação ao potencial fisiológico
RESUMO A pimenta “dedo-de-moça” (Capsicum baccatum var. pendulum) é uma das principais pimentas cultivadas mundialmente. Todavia, são escassos estudos genéticos e de melhoramento desta quando comparados a outras espécies de Capsicum, principalmente, sobre a qualidade fisiológica de sementes. Nesse sentido, objetivou-se avaliar a capacidade combinat
Hortic. Bras.. Publicado em: 2020-09
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4. Characterization of biochemical compounds and antioxidant activity of “dedo-de-moça” chili pepper accessions
RESUMO Capsicum baccatum é uma das principais espécies de pimenta cultivadas e consumidas na América do Sul. No Brasil, C. baccatum var. pendulum é amplamente cultivada, especialmente a pimenta do tipo “dedo-de-moça”. Para a maioria das culturas hortícolas, incluindo as espécies de Capsicum, a diversidade genética permanece subexplorada para cara
Hortic. Bras.. Publicado em: 09/12/2019
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5. Exact and inexact differentials in the early development of mechanics and thermodynamics
Abstract We give an account and a critical analysis of the use of exact and inexact differentials in the early development of mechanics and thermodynamics, and the emergence of differential calculus and how it was applied to solve some mechanical problems, such as those related to the cycloidal pendulum. The Lagrange equations of motions are presented in the
Rev. Bras. Ensino Fís.. Publicado em: 02/12/2019
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6. Testing discrepancies in the measurement of the acceleration of gravity in a physical pendulum experiment
Abstract After analysing results on the measurement of the acceleration of gravity using a physical pendulum in our teaching laboratory, we found that the value reported by the students is always higher than the theoretical expectations. In this article we analyze critically some of the students hypotheses for such displacement, and we perform an investigati
Rev. Bras. Ensino Fís.. Publicado em: 25/11/2019
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7. Forças no sistema de referência acelerado de um pêndulo: estudo teórico e resultados experimentais
Resumo Neste trabalho realizamos, inicialmente, uma discussão teórica sobre as forças no sistema de referência acelerado de um pêndulo que oscila livre de resistência. Tal discussão propicia a afirmação de que, se um acelerômetro for fixado no centro de oscilação de um pêndulo, ele deverá registrar um valor variável sobre o eixo orientado radi
Rev. Bras. Ensino Fís.. Publicado em: 25/11/2019
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8. Heavy Metals and 2,4-Dinitrophenol Impact on Some Physiological and Biochemical Parameters in Capsicum Species
Abstract The accumulation of heavy metals and of pesticides in the soil have a negative impact on Capsicum chinense var. Aji Mochero and Capsicum baccatum var. pendulum Bishop's Crown species, the present work highlighting the exerted influence on the superoxid-dismutase activity, catalase and peroxidase - as enzymes implied in the removal of H2O2, of O2- ra
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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9. COATING PERFORMANCES OF CRIMEAN JUNIPER (Juniperus excelsa M. BIEB.) WOOD
ABSTRACT The purpose of this study is to determine the varnish layer hardness and varnish adhesion strength of the varnished Crimean juniper (Juniperus excelsa M. Bieb.) wood growing naturally in the Kastamonu region of Turkey. Test samples were varnished with UV-resistant polyurethane alkyd resin high gloss varnish (PAV) and water-based acrylic resin gloss
CERNE. Publicado em: 20/05/2019
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10. Energy harvesting through pendulum motion and DC generators
Abstract In this paper a mathematical model was found, and numerical results obtained for the pendulum behavior when coupled to a DC generator. A simple pendulum is vertically excited on its support and consequently exhibiting oscillations and rotations. The motion of the pendulum spins the axis of a DC generator and inducing a current. The dynamic model inv
Lat. Am. j. solids struct.. Publicado em: 18/02/2019
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11. Offshore Energy Harvesting of a Marine Floating Pendulum Platform Model
Abstract This work presents an analysis of an ocean wave energy harvesting system. This system is composed of a direct current (DC) power generator attached at the middle-top of a floating platform. A pendulum is connected to the generator’s shaft. It is considered that the ocean waves motion swings the platform in the vertical direction, which transfers e
Lat. Am. j. solids struct.. Publicado em: 18/02/2019
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12. DETERMINATION OF ANTIOXIDANT POTENTIAL AND QUANTITATION OF PHENOLIC COMPOUNDS BY HPLC IN ACCESSION OF Capsicum baccatum var. pendulum
The need to increase the product’s shelf life and the growing concern to minimize the use of synthetic products encouraged the researchers to evaluate the antioxidant activity and quantify phenolic compounds as chlorogenic acid, caffeic acid, rutin, quercetin and apigenin through the use of HPLC, in 29 accesses of Capsicum baccatum. Capsicum baccatum var.
Quím. Nova. Publicado em: 2019-01