Oscillation
Mostrando 1-12 de 666 artigos, teses e dissertações.
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1. El Niño-Southern Oscillation impacts on grape yields in Santana do Livramento, Brazil: understanding and early warning of crop failure conditions
ABSTRACT El Niño-Southern Oscillation (ENSO) is an important source of year–to–year fluctuations in the whole global climate system and in the southern Brazilian climate. El Niño events affect this region, imposing unfavorable weather conditions (rainy/humid/overcast) during critical grapevine phenological stages, compromising yields in the current and
Revista Ceres. Publicado em: 2023
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2. Postural Control in Relapsing-Remitting Multiple Sclerosis
Abstract Introduction Postural instability is considered one of the most disabling symptoms of relapsing-remitting multiple sclerosis (RRMS). Objective To evaluate postural control in patients with RRMS. Method A total of 79 individuals between 18 and 65 years old, of both genders, were distributed into an experimental group composed of patients with RRMS
International Archives of Otorhinolaryngology. Publicado em: 2022
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3. 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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4. New Strategy for Streptavidin Detection Using AuNRs/PAAm Hydrogel Composites
Localized surface plasmon resonance (LSPR) is a collective oscillation of free electrons induced by the incident light in nanometric surfaces of conductive materials. Gold nanorods (AuNRs) have been studied for plasmonic devices due to their anisotropic properties. Herein, we report the construction of a specific biosensor using polyacrylamide (PAAm) as the
J. Braz. Chem. Soc.. Publicado em: 2020-09
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5. An Alternative Spectrophotometric Determination of Carbaryl Insecticide Residues in Water Samples Using the Cerium-Catalyzed Belousov-Zhabotinsky Oscillating Reaction
An alternative approach for carbaryl determination based on the change in the oscillation period of the Belousov-Zhabotinsky (BZ) reaction under the addition of carbaryl is demonstrated. The oscillations were observed by spectrophotometric measurement at 320 nm, corresponding to the maximum absorption wavelength of cerium(IV) catalyst. The oscillation period
J. Braz. Chem. Soc.. Publicado em: 2020-05
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6. 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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7. Center of gravity oscillations in HTLV-1-associated myelopathy/tropical spastic paraparesis
Resumo Introdução: o controle postural em indivíduos com mielopatia associada ao HTLV-1 ou paraparesia espástica tropical (HAM/TSP) é geralmente comprometido, o que aumenta o risco de quedas, dificulta a realização de atividades de vida diária e prejudica a qualidade de vida. O perfil das oscilações do centro de gravidade nesta população é desc
Fisioter. mov.. Publicado em: 13/01/2020
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8. The population dynamics of three polyphagous owlet moths (Lepidoptera: Noctuidae) and the influence of meteorological factors and ENSO on them
ABSTRACT The owlet moths (Lepidoptera: Noctuidae) Anicla infecta (Ochsenheimer 1816), Elaphria agrotina (Guenée 1852) and Spodoptera frugiperda (J.E. Smith 1797) occur in the entire American continent. These polyphagous moths have a preference for grasses, and have different biological habits. In this study, the populations of these three species were evalu
Rev. Bras. entomol.. Publicado em: 13/01/2020
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9. Uma proposta experimental para o estudo de oscilações acopladas usando um simulador de propagação de ondas mecânicas em meios sólidos
Resumo Neste artigo, apresentamos inicialmente um aparato, construído com materiais de fácil acesso, que pode ser empregado no estudo da lei de Hooke utilizando-se anéis de garrafa PET. Nesta fase da experimentação, esperamos que o professor reconheça junto aos seus estudantes que um anel mais largo possui constante elástica maior do que outro mais es
Rev. Bras. Ensino Fís.. Publicado em: 10/01/2020
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10. Scheduling optimum planting window for gladiola based on El Niño Southern Oscillation
ABSTRACT: Gladiola is an important cut flower worldwide and scheduling field gladiola production is largely dependent on planting at the correct time since its development is controlled by the air temperature. The aim of this study was to configure a planting window of gladiola in order to harvest spikes to be sold on All Souls' Day and Mother's Day holidays
Sci. agric. (Piracicaba, Braz.). Publicado em: 20/12/2019
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11. Controle postural em indivíduos com diabetes mellitus do tipo 2 com vertigem, tontura e/ou desequilíbrio
RESUMO Objetivo avaliar o controle postural em indivíduos com diabetes mellitus do tipo 2 (DM2) com vertigem, tontura e/ou desequilíbrio à posturografia. Métodos pacientes com DM2, 15 do sexo feminino e cinco do masculino, idades entre 46 e 83 anos e um grupo controle de 20 indivíduos hígidos, pareados por idade e sexo, 15 do sexo feminino e cinco do
Audiol., Commun. Res.. Publicado em: 05/12/2019
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12. Development and evaluation of physical properties of a low-cost handheld device for airway clearance therapy
RESUMO Diversas doenças respiratórias são caracterizadas por hipersecreção com necessidade de higiene brônquica (HB). Osciladores orais de alta frequência (OOAF) são dispositivos que promovem HB diária; entretanto, seu custo pode ser inviável para aquisição por pacientes com baixa renda. Os objetivos deste estudo foram: desenvolver um OOAF de bai
Fisioter. Pesqui.. Publicado em: 02/12/2019