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Sistema RGB com controle de fluxo luminoso e redução de variação cromática
(Universidade Federal de Santa MariaBREngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia Elétrica, 2014-07-10)
This work proposes a control methodology of luminous flux through independent sink temperature and current applied to red, green and blue LEDs. The main characteristics of solid-state lighting and LEDs themselves are ...
Circuito para acionamento e controle do fluxo luminoso de LEDs aplicados em sistemas de iluminação circadiana
(BrasilUFSMCentro de Tecnologia, 2022-08-15)
This work presents some concepts associated with power electronics, filters, electronics, programming and control for the development of an integrated Buck-Boost Forward converter to drive LEDs (Light-Emitting Diodes) ...
Intestinal passive absorption of hydrosoluble compounds by sparrows: effect of molecular size and luminal nutrients
(Springer Heidelberg, 2003-02-22)
We tested predictions that: (1) absorption of water-soluble probes decreases with increasing molecular size, consistent with movement through effective pores in epithelia, and (2) absorption of probes is enhanced when ...
Metodologia de projeto eletrotérmico de LEDs aplicada ao desenvolvimento de sistemas de iluminação pública
(Universidade Federal de Santa MariaBREngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia Elétrica, 2012-07-23)
This work presents an LED electrothermal design methodology applied to a street
lighting system. The methodology aims to provide indicatives of the optimal LED operating
point for lighting systems design, considering ...
Peritubular fluid viscosity modulates H + flux in proximal tubules through NO release
(American Physiological Society, 2001-02)
We evaluated the effects of increasing the viscosity (eta) in peritubular capillary perfusates (PCP; 20 mM HNaPO4--Ringer, pH 7.4) on proximal convoluted tubule (PCT) acidification. Micropuncture experiments were performed ...
Signaling path of the action of AVP on distal K+ secretion
(Blackwell Publishing, 2004-08-01)
Background. Previous studies from our laboratory have shown that luminal perfusion with arginine vasopressin (AVP) stimulates distal tubule secretory potassium flux (J(K)) via V1 receptors (Am J Physiol 278: F809- F816, ...
Signaling path of the action of AVP on distal K+ secretion
(Blackwell Publishing, 2004-08-01)
Background. Previous studies from our laboratory have shown that luminal perfusion with arginine vasopressin (AVP) stimulates distal tubule secretory potassium flux (J(K)) via V1 receptors (Am J Physiol 278: F809- F816, ...
METHOD FOR CHARACTERIZING THE DAYLIGHT PERFORMANCE OF WINDOWS WITH SOLAR CONTROL DEVICESMétodo para caracterização do comportamento luminoso de aberturas com elementos de controle solar
(ANTAC - Associação Nacional de Tecnologia do Ambiente Construído, 2009)
Projeto e implementação de um pré-regulador de fator de potência aplicado a lâmpadas fluorescentes t5 com fluxo luminoso variável
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2016-12-23)
In this master thesis, the development of an electronic ballast with variable luminous flux for
a T5 fluorescent lamp is presented. Several technics for the control of the power variation have
already been discussed in ...