Quorum sensing is crucial to Escherichia coli O157:H7 biofilm formation under static or very slow laminar flow conditions

2016 ◽  
Vol 10 (3) ◽  
pp. 241-249 ◽  
Author(s):  
Jeesun Lim ◽  
Kang-Mu Lee ◽  
Chan Yong Park ◽  
Han Vit Kim ◽  
Younghoon Kim ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Quorum Sensing ◽  
Laminar Flow ◽  
Biofilm Formation ◽  
Escherichia Coli O157 ◽  
Flow Conditions ◽  
Laminar Flow Conditions

scholarly journals Periodicity of Cell Attachment Patterns during Escherichia coli Biofilm Development

2003 ◽  
Vol 185 (18) ◽  
pp. 5632-5638 ◽  
Author(s):  
Konstantin Agladze ◽  
Debra Jackson ◽  
Tony Romeo
Keyword(s):  
Escherichia Coli ◽  
Laminar Flow ◽  
Biofilm Formation ◽  
Cell Attachment ◽  
Bacterial Biofilms ◽  
Flow Conditions ◽  
Biofilm Development ◽  
Complex Architecture ◽  
Activator Inhibitor ◽  
Laminar Flow Conditions

ABSTRACT The complex architecture of bacterial biofilms inevitably raises the question of their design. Microstructure of developing Escherichia coli biofilms was analyzed under static and laminar flow conditions. Cell attachment during early biofilm formation exhibited periodic density patterns that persisted during development. Several models for the origination of biofilm microstructure are considered, including an activator-inhibitor or Turing model.

A Mechanistic Study of Griseofulvin Dissolution into Surfactant Solutions under Laminar Flow Conditions

1997 ◽  
Vol 86 (10) ◽  
pp. 1132-1137 ◽  
Author(s):  
Venkatramana M. Rao ◽  
Mengfen Lin ◽  
Cynthia K. Larive ◽  
Marylee Z. Southard
Keyword(s):  
Laminar Flow ◽  
Mechanistic Study ◽  
Flow Conditions ◽  
Surfactant Solutions ◽  
Laminar Flow Conditions

scholarly journals Contributions of EspA Filaments and Curli Fimbriae in Cellular Adherence and Biofilm Formation of Enterohemorrhagic Escherichia coli O157:H7

PLoS ONE ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. e0149745 ◽  
Author(s):  
Vijay K. Sharma ◽  
Indira T. Kudva ◽  
Bradley L. Bearson ◽  
Judith A. Stasko
Keyword(s):  
Escherichia Coli ◽  
Biofilm Formation ◽  
Enterohemorrhagic Escherichia Coli ◽  
Escherichia Coli O157

scholarly journals Simulation of micromixing in a T-mixer under laminar flow conditions

2020 ◽  
Vol 222 ◽  
pp. 115706 ◽  
Author(s):  
Cláudio P. Fonte ◽  
David F. Fletcher ◽  
Pierrette Guichardon ◽  
Joelle Aubin
Keyword(s):  
Laminar Flow ◽  
Flow Conditions ◽  
Laminar Flow Conditions

scholarly journals Fabrication and Hypersonic Wind Tunnel Validation of a MEMS Skin Friction Sensor Based on Visual Alignment Technology

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3803
Author(s):  
Xiong Wang ◽  
Nantian Wang ◽  
Xiaobin Xu ◽  
Tao Zhu ◽  
Yang Gao
Keyword(s):  
Wind Tunnel ◽  
Laminar Flow ◽  
Turbulent Flow ◽  
Skin Friction ◽  
Flow Conditions ◽  
Friction Coefficients ◽  
Hypersonic Wind Tunnel ◽  
Laminar Flow Conditions ◽  
Turbulent Flow Conditions ◽  
Better Than

MEMS-based skin friction sensors are used to measure and validate skin friction and its distribution, and their advantages of small volume, high reliability, and low cost make them very important for vehicle design. Aiming at addressing the accuracy problem of skin friction measurements induced by existing errors of sensor fabrication and assembly, a novel fabrication technology based on visual alignment is presented. Sensor optimization, precise fabrication of key parts, micro-assembly based on visual alignment, prototype fabrication, static calibration and validation in a hypersonic wind tunnel are implemented. The fabrication and assembly precision of the sensor prototypes achieve the desired effect. The results indicate that the sensor prototypes have the characteristics of fast response, good stability and zero-return; the measurement ranges are 0–100 Pa, the resolution is 0.1 Pa, the repeatability accuracy and linearity are better than 1%, the repeatability accuracy in laminar flow conditions is better than 2% and it is almost 3% in turbulent flow conditions. The deviations between the measured skin friction coefficients and numerical solutions are almost 10% under turbulent flow conditions; whereas the deviations between the measured skin friction coefficients and the analytical values are large (even more than 100%) under laminar flow conditions. The error resources of direct skin friction measurement and their influence rules are systematically analyzed.

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