Search Results - "Murta, Helena"
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Unusual features of negative leaders' development in natural lightning, according to simultaneous records of current, electric field, luminosity, and high‐speed video
Published in Journal of geophysical research. Atmospheres (27-02-2017)“…The development of downward and upward leaders that formed two negative cloud‐to‐ground return strokes in natural lightning, spaced only about 200 µs apart and…”
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2
Features of Upward Positive Leaders Initiated From Towers in Natural Cloud‐to‐Ground Lightning Based on Simultaneous High‐Speed Videos, Measured Currents, and Electric Fields
Published in Journal of geophysical research. Atmospheres (16-12-2017)“…Original simultaneous records of currents, close electric field, and high‐speed videos of natural negative cloud‐to‐ground lightning striking the tower of…”
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Methodology for evaluation of grid-tie connection of distributed energy resources - Case study with photovoltaic and energy storage
Published in IEEE transactions on power systems (01-05-2013)“…The availability of reliable energy sources for all people, especially electricity, indicates an imbalance in the living conditions of a society. Therefore,…”
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4
Cross cultural adaptation of the Water Orientation Test Alyn (WOTA) 1 and 2 - Portuguese version
Published in Annals of medicine (Helsinki) (21-01-2024)“…Introduction: Aquatic Physical therapy plays an important role in the treatment of several clinical conditions. A therapy programme associated with water…”
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M-component currents of first return strokes in natural negative cloud-to-ground lightning
Published in Journal of geophysical research. Atmospheres (16-11-2013)“…Records of M‐component currents of first return strokes in natural negative cloud‐to‐ground lightning measured in a short instrumented tower are shown along…”
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Development of expressions for using a short cylindrical tube in on-site measurements of frequency-dependent electric parameters of soil
Published in Electric power systems research (01-09-2024)“…•Original methodology for determining the frequency dependence of electric parameters.•Frequency dependent soil resistivity and permittivity.•Investigating the…”
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7
Early phases of lightning currents
Published in 2010 Asia-Pacific International Symposium on Electromagnetic Compatibility (01-04-2010)“…The patterns of current waves of negative downward lightning strokes measured at the base of a short instrumented tower are discussed. The features of the…”
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The Response of Grounding Electrodes to Lightning Currents: The Effect of Frequency-Dependent Soil Resistivity and Permittivity
Published in IEEE transactions on electromagnetic compatibility (01-05-2011)“…A methodology is proposed and applied to determine the variation of soil resistivity and permittivity in the typical range of lightning current frequency…”
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Features of Upward Lightning Measured in a Tropical Region and Their Potential to Cause Hazardous Effects
Published in IEEE transactions on electromagnetic compatibility (01-06-2019)“…Features of upward lightning and their potential to yield hazardous effects are discussed based on original fast video and simultaneous records of current and…”
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Striking Distance Determined From High‐Speed Videos and Measured Currents in Negative Cloud‐to‐Ground Lightning
Published in Journal of geophysical research. Atmospheres (27-12-2017)“…First and subsequent return strokes' striking distances (SDs) were determined for negative cloud‐to‐ground flashes from high‐speed videos exhibiting the…”
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11
Early phase of lightning currents measured in a short tower associated with direct and nearby lightning strikes
Published in Journal of Geophysical Research: Atmospheres (27-08-2010)“…Records of natural lightning currents of negative downward strokes measured at the base of a 60 m high instrumented tower are presented to denote patterns of…”
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12
Provas de atividade inflamatória no pênfigo foliáceo endêmico
Published in Revista da Sociedade Brasileira de Medicina Tropical (01-03-1994)“…O pênfigo foliáceo endêmico (PFE) é uma afecção onde fenômenos auto-imunes são freqüentemente relacionados com sua patogênese. Abordaram-se neste estudo,…”
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Parallel processing applied to the design of concrete encased grounding electrodes
Published in Journal of computer science and technology (La Plata) (01-10-2001)“…This work presents the authors investigation regarding the application of parallel processing to the design of grounding systems, comprising concrete encased…”
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14
Provas de atividade inflamatória no pênfigo foliáceo endêmico
Published in Revista da Sociedade Brasileira de Medicina Tropical (01-03-1994)“…O pênfigo foliáceo endêmico (PFE) é uma afecção onde fenômenos auto-imunes são freqüentemente relacionados com sua patogênese. Abordaram-se neste estudo,…”
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