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Langevin equations for the run-and-tumble of swimming bacteria
(Royal Society of Chemistry, 2018-05)
The run and tumble motions of a swimming bacterium are well characterized by two stochastic variables: the speed v(t) and the change of direction or deflection x(t) = cosφ(t), where φ(t) is the turning angle at time t. ...
A stochastic model for directional changes of swimming bacteria
(Royal Society of Chemistry, 2017-04-17)
In this work we introduce a stochastic model to describe directional changes in the movement of swimming bacteria. We use the probability density function (PDF) of turn angles, measured on tumbling wild-type E. coli, to ...
Acute aerocystitis in Nile tilapia bred in net cages and supplemented with chromium carbochelate and Saccharomyces cerevisiae
(Elsevier B.V., 2014-01-01)
Oreochromis niloticus bred in net cages were supplemented with cell wall of Saccharomyces cerevisiae (Sc) (0.3%) or chromium carbochelate (Cr) (18 mg/kg of feed) or in association (Sc + Cr), for 90 days. After this period, ...
First report of Streptococcus agalactiae isolated from Oreochromis niloticus in Piura, Peru: Molecular identification and histopathological lesions
(Elsevier B.V., 2016-11-01)
The aim of this study was to identify the bacterium Streptococcus agalactiae isolated in farmed Nile tilapia (Oreochromis niloticus) from Piura, Peru and to characterize the histopathological lesions caused by this pathogen. ...
Proteome changes and physiological adaptations of the phytopathogen Xanthomonas citri subsp. citri under salt stress and their implications for virulence
(Wiley Blackwell Publishing, Inc, 2019-06)
The bacterium Xanthomonas citri subsp. citri (Xcc) is responsible for the widely distributed disease citrus canker. In the last years, Xcc has become a model for the study of plant pathogens, and here we used this bacterium ...
Observed frequency-independent torque in flagellar bacterial motors optimizes space exploration
(American Physical Society, 2012-12-17)
A surprising feature of many bacterial motors is the apparently conserved form of their torque-frequency relation. Experiments indicate that the torque provided by the bacterial rotary motor is approximately constant over ...
Acute hypercortisolemia inhibits innate immune parameters in Piaractus mesopotamicus experimentally infected with Aeromonas hydrophila
(2020-06-30)
Cortisol is a key modulator of the immune response in fish, and considered an essential molecule for adaptation of animals to stress and overcoming the stressor. Antagonist effects, pro and anti-inflammatory have been ...
Parametric Analysis of BFOA for Minimization Problems Using a Benchmark Function
(Universidad UTE, 2019)