Chi-Hung Chen

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The kinematic, kinetic, and electromyographic (EMG) patterns observed during fast, single-joint flexion movement have been widely studied as a paradigm for understanding voluntary movement. Several patterns have been described that depend upon the movement task (e.g., distance, speed, and load). A previous model that interpreted differences in EMG patterns(More)
Escherichia coli O157: H7 (EHEC) is a major foodborne pathogen largely transmitted to humans through the consumption of undercooked ground beef. This study investigated the efficacy of two food-grade, plant-derived antimicrobials, namely rutin (RT), and resveratrol (RV) with or without chitosan (CH) in enhancing EHEC inactivation in undercooked hamburger(More)
Voluntary movements may be considered kinematic actions resulting from the neural control patterns that activate the motoneuron pools. One school of thought proposes that specific features of the intended kinematic trajectory such as the duration of acceleration are used by the central nervous system to plan muscle activation patterns. Our own experience(More)
The control of distance and speed during single-joint human elbow flexion is accomplished by different modes of activating the motoneuron pools. Distance is controlled by modulating the duration of activation, while speed is controlled by modulating the intensity. The experiments reported on here compare movements of different distances under two sets of(More)
Aflatoxins (AF) are toxic metabolites primarily produced by molds, Aspergillus flavus and Aspergillus parasiticus. Contamination of poultry feed with AF is a major concern to the poultry industry due to severe economic losses stemming from poor performance, reduced egg production, and diminished egg hatchability. This study investigated the inhibitory(More)
Aflatoxins (AF) are toxic metabolites produced by molds, Aspergillus flavus and Aspergillus parasiticus, which frequently contaminate poultry feed ingredients. Ingestion of AF-contaminated feed by chickens leads to deleterious effects, including decreased bird performance and reduced egg production. Moreover, AF residues in fertilized eggs result in huge(More)
The efficacy of a new generation disinfectant, octenidine dihydrochloride (OH), as wash and coating treatments for reducing Listeria monocytogenes (LM), Salmonella spp. (SAL), and Escherichia coli O157:H7 (EC) on cantaloupe was investigated. Cantaloupe rind plugs inoculated separately with the three bacterial species (∼8 log CFU/cm(2)) were washed for 1, 3,(More)
This study investigated the efficacy of two GRAS (generally regarded as safe)-status, plant-derived antimicrobials (PDAs), namely trans-cinnamaldehyde (TC) and eugenol (EUG) applied as a fumigation treatment in reducing SE on embryonated egg shells. Egg shells of day-old embryonated eggs were spot inoculated with a 4-strain mixture of SE (∼6.5 log CFU/egg)(More)
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