Results 71 to 80 of about 23,448 (216)

Bacterial evolution and the Bak-Sneppen model [PDF]

open access: yesarXiv, 2001
Recently, Lenski et al \cite{Elena,Lenski,Travisano} have carried out several experiments on bacterial evolution. Their findings support the theory of punctuated equilibrium in biological evolution. They have further quantified the relative contributions of adaptation, chance and history to bacterial evolution.
arxiv  

Analysis of bacterial population growth using extended logistic growth model with distributed delay [PDF]

open access: yesarXiv, 2018
In the present work, we develop a delayed Logistic growth model to study the effects of decontamination on the bacterial population in the ambient environment. Using the linear stability analysis, we study different case scenarios, where bacterial population may establish at the positive equilibrium or go extinct due to increased decontamination.
arxiv  

Quantitative Aspects, Engineering and Optimization of Bacterial Sensor Systems [PDF]

open access: yesarXiv
Bacterial sensor systems can be used for the detection and measurement of molecular signal concentrations. The dynamics of the sensor directly depend on the biological properties of the bacterial sensor cells; manipulation of these features in the wet lab enables the engineering and optimization of the bacterial sensor kinetics.
arxiv  

Bacterial tracking of motile algae assisted by algal cell's vorticity field [PDF]

open access: yesarXiv, 2008
Previously published experimental work by other authors has shown that certain motile marine bacteria are able to track free swimming algae by executing a zigzag path and steering toward the algae at each turn. Here, we propose that the apparent steering behaviour could be a hydrodynamic effect, whereby an algal cell's vorticity and strain-rate fields ...
arxiv  

Bacterial swimming and accumulation on endothelial cell surfaces [PDF]

open access: yesarXiv
Flagellar-driven locomotion plays a critical role in bacterial attachment and colonization of surfaces, contributing to the risks of contamination and infection. Tremendous attempts to uncover the underlying principles governing bacterial motility near surfaces have relied on idealized assumptions of surrounding inorganic boundaries.
arxiv  

Bacterial cooperation leads to heteroresistance [PDF]

open access: yesarXiv, 2017
By challenging E. coli with sublethal norfloxacin for 10 days, Henry Lee and James Collins suggests the bacterial altruism leads to the population-wide resistance. By detailedly analyzing experiment data, we suggest that bacterial cooperation leads to population-wide resistance under norfloxacin pressure and simultaneously propose the bacteria shield ...
arxiv  

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