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Self-sustained oscillations in the potential of a CO-poisoned PEM fuel cell: A model based on physical principles
(Elsevier Science SA, 2021-01-01)
A dynamic 1-D model for the simulation of the oscillatory behavior in the anode potential of a PEM fuel cell under constant current conditions and the presence of CO impurities in the H2 inlet is presented. The model is ...
Dynamical impacts associated with radiation boundary conditions
(Elsevier Science, 2001-12)
It is well known that the use of radiation conditions for the non-linear shallow water equations can lead to an incorrect model response in a variety of dynamical settings. In this study, we show that conditions aimed to ...
Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
(American Association of Stratigraphic Palynologists Foundation, 2012-04)
Palynological studies have been performed in order to increase knowledge of relations between present vegetation and fungal biota. The analysis of modern analogues will help to improve the palaeoenvironmental reconstructions ...
Effect of the Electrode Impedance in Improved Buffer Amplifier for Bioelectric Recordings
(Taylor & Francis, 2004-12)
We analyzed the effects of the electrode impedance on the transfer response of a one-stage improved buffer amplifier. The electrode DC resistance (Rd) modifies the one-stage buffer transfer response. We found a limit ...
Study of oscillations and pattern formation in the CO + O2 reaction on Pt(1 0 0) surfaces through dynamic Monte Carlo simulation
(Elsevier Science, 2007-12)
Oscillations and pattern formation driven by a surface reconstruction are studied for the catalytic oxidation of CO on Pt(1 0 0) single-crystal surfaces through dynamic Monte Carlo simulations at low pressure and relatively ...
Electrostatically actuated encased cantilevers
(Beilstein-Institut züur Forderung der Chemischen Wissenschaften, 2018-05)
Background: Encased cantilevers are novel force sensors that overcome major limitations of liquid scanning probe microscopy. By trapping air inside an encasement around the cantilever, they provide low damping and maintain ...
The lifetime of interlayer breathing modes of few-layer 2H-MoSe2 membranes
(Royal Society of Chemistry, 2019-06)
A time-resolved observation of coherent interlayer longitudinal acoustic phonons in thin layers of 2H-MoSe2 is reported. A femtosecond pump-probe technique is used to investigate the evolution of the energy loss of these ...
Relativistic effects in the energy loss of a fast charged particle moving parallel to a two-dimensional electron gas
(Elsevier Science, 2018-05-01)
We present a fully relativistic formulation for the energy loss rate of a charged particle moving parallel to a sheet containing two-dimensional electron gas, allowing that its in-plane polarization may be described by ...
PBC Approach for SMES Devices in Electric Distribution Networks
(Institute of Electrical and Electronics Engineers, 2018-12)
This express brief presents a nonlinear active and reactive power control for a superconducting magnetic energy storage (SMES) system connected in three-phase distribution networks using pulse-width modulated current-source ...
Pre-harvest sprouting and grain dormancy in sorghum bicolor: What have we learned?
(Frontiers Media S.A., 2018-06)
The possibility of obtaining sorghum grains with quality to match the standards for a diversity of end-uses is frequently hampered by the susceptibility to pre-harvest sprouting (PHS) displayed by many elite genotypes. For ...