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Dissociation of circadian and light inhibition of melatonin release through forced desynchronization in the rat
(NATL ACAD SCIENCES, 2009)
Pineal melatonin release exhibits a circadian rhythm with a tight nocturnal pattern. Melatonin synthesis is regulated by the master circadian clock within the hypothalamic suprachiasmatic nucleus (SCN) and is also directly ...
Dual-pumped degenerate Kerr oscillator in a silicon nitride microresonator
(2015-11-15)
We demonstrate a degenerate parametric oscillator in a silicon nitride microresonator. We use two frequency-detuned pump waves to perform parametric four-wave mixing and operate in the normal group-velocity dispersion ...
Controlador em modo dual adaptativo robusto - DMARC
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia ElétricaAutomação e Sistemas; Engenharia de Computação; Telecomunicações, 2008-01-24)
The so-called Dual Mode Adaptive Robust Control (DMARC) is proposed. The DMARC is a control strategy which interpolates the Model Reference Adaptive Control (MRAC) and the Variable Structure Model Reference Adaptive Control ...
Fermion helicity flip and fermion oscillation induced by dynamical torsion field
(IOP Publishing, 2019-07)
We show that in theories of gravitation based in affine geometries the torsion field, that takes a dynamical character, produces the non-conservation of the helicity of fermion particles (spin precession). Such effect is ...
Analysis, design and test of ultra-low-voltage CMOS ring oscillators
(2019)
Este trabalho disserta sobre os limites físicos da mínima tensão de operação de osciladores em anel. Existem dois objetivos principais neste trabalho. O primeiro objetivo é o de comparar diferentes topologias de osciladores ...
Operator formulation of q-deformed dual string model
(1993-12-01)
We present an operator formulation of the q-deformed dual string model amplitude using an infinite set of q-harmonic oscillators. The formalism attains the crossing symmetry and factorization and allows to express the ...
Symmetry transform in Faddeev-Jackiw quantization of dual models
(1999-03-15)
We study the presence of symmetry transformations in the Faddeev-Jackiw approach for constrained systems. Our analysis is based in the case of a particle submitted to a particular potential which depends on an arbitrary ...
Symmetry transform in Faddeev-Jackiw quantization of dual models
(1999-03-15)
We study the presence of symmetry transformations in the Faddeev-Jackiw approach for constrained systems. Our analysis is based in the case of a particle submitted to a particular potential which depends on an arbitrary ...
Operator formulation of q-deformed dual string model
(1993-12-01)
We present an operator formulation of the q-deformed dual string model amplitude using an infinite set of q-harmonic oscillators. The formalism attains the crossing symmetry and factorization and allows to express the ...
Seasonal Variation of Temporal Niche in Wild Owl Monkeys (Aotus azarai azarai) of the Argentinean Chaco: A Matter of Masking?
(Taylor & Francis, 2012-07)
Among the more than 40 genera of anthropoid primates (monkeys, apes, and humans), only the South American owl monkeys, genus Aotus, are nocturnal. However, the southernmostly distributed species, Aotus azarai azarai, of ...