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Age-related changes in gait adaptability in response to unpredictable obstacles and stepping targets
(2016-05-01)
Background: A large proportion of falls in older people occur when walking. Limitations in gait adaptability might contribute to tripping; a frequently reported cause of falls in this group. Objective: To evaluate age-related ...
Sufficients conditions for analysis of extrema in the step-response of the linear control systems
(Institute of Electrical and Electronics Engineers (IEEE), 2011-12-01)
This note deals whith the problem of extrema which may occur in the step-response of a stable linear system with real zeros and poles. Some simple sufficients conditions and necessary conditions are presented for analyses ...
Auditory Cueing for Gait Impairment in Persons With Parkinson Disease: A Pilot Study of Changes in Response With Disease Progression
(2019-01-01)
BACKGROUND AND PURPOSE: Gait impairments in persons with Parkinson disease (PD) are difficult to manage. Auditory cueing has been shown to be an effective therapy. However, the optimal time to introduce cues with respect ...
Optimization of high-solid enzymatic hydrolysis of two-step alkaline and dilute acid-pretreated sugarcane bagasse at low enzyme loadings by response surface methodology
(2021-01-01)
Sugarcane bagasse—a lignocellulosic material derived from sugarcane after crushing and extracting of its juice—is a promising feedstock for bioethanol production. The current study presented a two-step alkaline and acid ...
Control oriented models of step-up and step-down photovoltaic power systems
(Universidad Nacional de Colombia Sede Medellín, 2012)
This paper presents the modeling and control of photovoltaic systems considering disturbances in the solar irradiance and the load. Three cases are addressed: step-up/step-down systems using a non-inverting Buck-Boost ...
Individual differences in the behavioral responsiveness of F1 Holstein-Gyr heifers to the training for milking routine
(2021-08-01)
The objective of this study was to assess individual differences in behavioral responses of F1 Holstein-Gyr heifers subjected to habituation protocols to humans and milking procedures. Training was divided in two phases ...
Reliability of peak O-2 uptake and O-2 uptake kinetics in step exercise tests in healthy subjects
(Elsevier B.V., 2015-02-01)
To date little is known about the reliability of peak oxygen consumption (VO2pEAK) in incremental metronome paced step tests (1ST) and the reliability of on-kinetics VO2 has never been studied. We aimed to study the ...
Extracting the stepping dynamics of molecular motors in living cells from trajectories of single particles
(Springer, 2013-01)
Molecular motors are responsible of transporting a wide variety of cargos in the cytoplasm. Current efforts are oriented to characterize the biophysical properties of motors in cells with the aim of elucidating the mechanisms ...
A Substrate Trapping Mutant Form of Striatal-Enriched Protein Tyrosine Phosphatase Prevents Amphetamine-Induced Stereotypies and Long-Term Potentiation in the Striatum
(ELSEVIER SCIENCE INC, 2009)
Background: Chronic, intermittent exposure to psychostimulant drugs results in striatal neuroadaptations leading to an increase in an array of behavioral responses on subsequent challenge days. A brain-specific striatal-enriched ...
Theoretical Study of the Dissociative Adsorption of Methane on Ir(111): The Role of Steps and Surface Distortions at High Temperatures
(American Chemical Society, 2016-02)
In this work we revisit the dissociative adsorption of methane on Ir(111) through density functional theory calculations. We focus on the role of surface defects entailing undercoordinated Ir atoms (e.g., steps), and ...