Search Results - "Vieira, J.L.F."

Mercury toxicity in the Amazon: contrast sensitivity and color discrimination of subjects exposed to mercury by Rodrigues, A R, Souza, C R B, Braga, A M, Rodrigues, P S S, Silveira, A T, Damin, E T B, Côrtes, M I T, Castro, A J O, Mello, G A, Vieira, J L F, Pinheiro, M C N, Ventura, D F, Silveira, L C L

“…We measured visual performance in achromatic and chromatic spatial tasks of mercury-exposed subjects and compared the results with norms obtained from healthy…”
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Comparative study of human exposure to mercury in riverside communities in the Amazon region by Pinheiro, M C N, Oikawa, T, Vieira, J L F, Gomes, M S V, Guimarães, G A, Crespo-López, M E, Müller, R C S, Amoras, W W, Ribeiro, D R G, Rodrigues, A R, Côrtes, M I T, Silveira, L C L

“…Four populations in the Amazon area were selected for a comparative study of mercury-exposed and non-exposed populations: São Luiz do Tapajós, Barreiras,…”
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Single stage self-oscillating HPF electronic ballast by Brumatti, M., Co, M.A., Simonetti, D.S.L., Vieira, J.L.F.

“…This paper presents a single-stage self-oscillating high-power-factor electronic ballast more suitable for both low power levels (because it operates in…”
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High-power-factor electronic ballast based on a single power processing stage by Co, M.A., Simonetti, D.S.I., Vieira, J.L.F.

“…A new high-power-factor (HPF) electronic ballast is introduced in this paper. The proposed topology is based on a single power processing stage, and provides a…”
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A magnetically coupled regenerative turn-on and turn-off snubber configuration by Menegaz, P.J.M., Vieira, J.L.F., Simonetti, D.S.L.

“…This paper presents a magnetically coupled regenerative turn-on and turn-off snubber configuration applied to a boost converter, which operates in continuous…”
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Mercury exposure and antioxidant defenses in women: A comparative study in the Amazon by Pinheiro, M.C.N., Macchi, B.M., Vieira, J.L.F., Oikawa, T., Amoras, W.W., Guimarães, G.A., Costa, C.A., Crespo-López, M.E., Herculano, A.M., Silveira, L.C.L., do Nascimento, J.L.M.

“…Mercury is a hazardous metal that has become an important issue of environmental contamination in Amazon areas. Human intoxication by mercury causes sensory…”
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Mercury pollution and childhood in Amazon riverside villages by Pinheiro, M.C.N., Crespo-López, M.E., Vieira, J.L.F., Oikawa, T., Guimarães, G.A., Araújo, C.C., Amoras, W.W., Ribeiro, D.R., Herculano, A.M., do Nascimento, J.L.M., Silveira, L.C.L.

“…Mercury is a hazardous metal responsible for environmental contamination and human intoxication. Methylmercury, a very toxic organic compound, bioaccumulates…”
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Mercury and selenium concentrations in hair samples of women in fertile age from Amazon riverside communities by Pinheiro, M.C.N., Müller, R.C.S., Sarkis, J.E., Vieira, J.L.F., Oikawa, T., Gomes, M.S.V., Guimarães, G.A., do Nascimento, J.L.M., Silveira, L.C.L.

“…The aim of the present study was to evaluate mercury and selenium concentrations in hair samples of reproductive age women from riverside communities of the…”
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A high-performance ZVS full-bridge DC-DC 0-50-V/0-10-A power supply with phase-shift control by Brunoro, M., Vieira, J.L.F.

“…This paper presents a high-performance DC-DC switching mode power supply designed to deliver a regulated 0-50 V/0-10 A output. The proposed power supply is…”
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High-power-factor electronic ballast with constant DC-link voltage by de Oliveira Brioschi, R., Vieira, J.L.F.

“…This paper presents a high-power-factor (HPF) electronic ballast based on a single power processing stage with constant DC-link voltage. The switching…”
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High-power-factor electronic ballast operating in critical conduction mode by Co, M.A., Simonetti, S.L., Vieira, J.L.F.

“…A high-power factor (HPF) electronic ballast, which exhibits low switching losses, is presented in this paper. The proposed topology is based on a single…”
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Microcontrolled electronic gear for HID lamps comparisons with electromagnetic ballast by Co, M.A., Rezende, C.Z., Simonetti, D.S.L., Vieira, J.L.F.

“…This paper presents an electronic control gear for high intensity discharge (HID) lamps that operates with a low frequency current inverter to drive the lamp,…”
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Microcontrolled electronic gear for low wattage metal halide (MH) and high-pressure sodium (HPS) lamps by Co, M.A., Resende, C.Z., Simonetti, D.S.L., Vieira, J.L.F., Almeida, P.C.A.

“…This paper presents an electronic control gear for HID lamps that operates with a low frequency current inverter to drive the lamp, a DC-DC buck converter to…”
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Multiple alternatives of regenerative snubber applied to Sepic and Cuk converters by Bonfa, V.A., Menegaz, P.J.M., Vieira, J.L.F., Simonetti, D.S.L.

“…This paper presents several topological alternatives for using a magnetically coupled regenerative turn-on and turn-off snubber configuration applied to the…”
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Constant frequency PWM capacitor voltage-clamped series resonant power supply by Vieira, J.L.F., Barbi, I.

“…The authors propose a capacitor-voltage-clamped series-resonant converter, regulated at constant frequency by pulse-width modulation (PWM), that is suitable…”
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Single stage self-oscillating HPF electronic ballast by Bruamatti, M., Resende, C.Z., Co, M.A., Simonetti, D.S.L., Vieira, J.L.F.

“…This paper presents a single stage self-oscillating high power factor (HPF) electronic ballast more suitable for both low power levels (because it operates in…”
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Shared radio system for reclosers control by Trarbach, E., Brumatti, M., Casotto, E., Vieira, J.L.F., Almeida, P.C.A.

“…Reclosers are typically used in the power electric plants to protect the system against temporary faults caused by natural effects (e.g., lightning, wind,…”
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A single-switch three-phase boost rectifier with constant input harmonic content by Simonetti, D.S.L., Azevedo, M.C., Sousa, G.C.D., Vieira, J.L.F.

“…In this paper, a novel duty-cycle modulation technique applied to a single-switch three-phase boost rectifier is proposed. In contrast to previous solutions…”
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A fully protected push-pull current-fed DC-DC converter by Rabello, A.L., Marcio, C.A., Sousa, G.C.D., Vieira, J.L.F.

“…This paper presents an isolated DC-DC converter designed to operate as a primary stage of an on-board DC-AC power supply for diesel-electric engines. The DC-AC…”
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A magnetically coupled regenerative turn-on and turn-off snubber configuration [for boost convertor] by Menegaz, P.J.M., Vieira, J.L.F., Simonetti, D.S.L.

“…This paper presents a magnetically coupled regenerative turn-on and turn-off snubber configuration applied to a boost power converter which operates in the…”
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