Impacts of motile Escherichia coli on air-water surface tension

Impacts of motile Escherichia coli on air-water surface tension
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运动性大肠杆菌对空气-水表面张力的影响

DOI:
10.1051/e3sconf/202020508003
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发表时间:
2020
影响因子:
--
通讯作者:
Dai, Sheng
Dai, Sheng
中科院分区:
--
文献类型:
--
作者:
Zhao, Yumeng;Jeong, Boyoung;Kang, Dong-Hun;Dai, Sheng

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多孔介质中不相容多相流动受界面性质的影响很大,主要表现在接触角和表面张力上。界面悬浮颗粒可以显著改变气液两相的表面张力。颗粒界面具有独特的性质,例如,表面活性剂或纳米颗粒负载的界面具有较低的表面张力。本研究探讨了一种可移动细菌--大肠杆菌(E.Coli,ATCC 9637)对空气-水表面张力的影响。用最大气泡压力法、杜诺伊林法和悬滴法测量了运动-细菌界面的表面张力。测量的表面张力仍然独立于你。当采用最大气泡压力法时,共浓度随E的增大而减小。Du Noüyring方法中的共浓度变化,并用悬挂滴法给出随时间的变化。分析表明,这种差异可能源于E的对流扩散过程的不同。Coliin在各种检测方法之间流动。
Immiscible multiphase flow in porous media is largely affected by interfacial properties, manifested in contact angle and surface tension. The gas-liquid surface tension can be significantly altered by suspended particles at the interface. Particle-laden interfaces have unique properties, for example, a lower surface tension of interfaces laden with surfactants or nanoparticles. This study investigates the impacts of a motile bacteriumEscherichia coli(E. coli, strain ATCC 9637) on the air-water surface tension. Methods of the maximum bubble pressure, thedu Noüyring, and the pendant droplet are used to measure the surface tension of the motile-bacteria-laden interfaces. Measured surface tension remains independent to theE. coliconcentration when using the maximum bubble pressure method, decreases with increasedE. coliconcentration in thedu Noüyring method, and presents time-dependent changes by the pendant drop method. The analyses show that the discrepancies may come from the different convection-diffusion processes ofE. coliin the flow among various testing methods.
表面活性剂对体积平衡条件下柔性壁通道内两相流的影响
DOI: --
发表时间: 1998
期刊:
影响因子: --
作者:
D. Yap;D. Gaver
通讯作者: D. Gaver
与核废料储存库相关的耦合过程
DOI: 10.1016/0012-8252(90)90011-j
发表时间: 1990
影响因子: 12.1
作者:
A. Lerman
通讯作者: A. Lerman
DOI: 10.1085/jgp.1.5.521
发表时间: 1919-05-20
期刊: The Journal of general physiology
影响因子: --
作者:
du Noüy PL
通讯作者: du Noüy PL
DOI: 10.1051/e3sconf/202020508008
发表时间: 2020
影响因子: --
作者:
Jeong, Boyoung;Zhao, Yumeng;Kang, Dong-Hun;Dai, Sheng
通讯作者: Dai, Sheng