scholarly journals Membrane charge oscillations during ultrasonic neuromodulation by intramembrane cavitation

2021 ◽  
pp. 1-1
Author(s):  
Thomas Tarnaud ◽  
Wout Joseph ◽  
Ruben Schoeters ◽  
Luc Martens ◽  
Emmeric Tanghe
Keyword(s):  
Membrane Charge

scholarly journals Nanofiltration of Mine Water: Impact of Feed pH and Membrane Charge on Resource Recovery and Water Discharge

Membranes ◽  
2014 ◽  
Vol 4 (2) ◽  
pp. 163-180 ◽  
Author(s):  
Mark Mullett ◽  
Roberta Fornarelli ◽  
David Ralph
Keyword(s):  
Mine Water ◽  
Water Discharge ◽  
Resource Recovery ◽  
Water Impact ◽  
Membrane Charge

scholarly journals Anomalous Thermo-osmotic Conversion Performance of Ionic Covalent-Organic-Framework Membranes in Response to Charge Variations

2022 ◽  
Author(s):  
Qi Sun ◽  
Weipeng Xian ◽  
Xiuhui Zuo ◽  
Changjia Zhu ◽  
Qing Guo ◽  
...  
Keyword(s):  
Charge Density ◽  
Energy Conversion ◽  
Energy Demand ◽  
High Performance ◽  
Critical Factor ◽  
Energy Conversion Efficiency ◽  
Nanoporous Membranes ◽  
Power Extraction ◽  
Membrane Charge ◽  
Salinity Difference

Abstract The development of efficient thermo-osmotic energy conversion devices has fascinated scientists and engineers for several decades in terms of satisfying the growing energy demand. The fabrication of ionic membranes with a high charge population is known to be a critical factor in the design of high-performance power generators for achieving high permselectivity and, consequently, high power extraction efficiency. Herein, we experimentally demonstrated that the thermo-osmotic energy conversion efficiency was improved by increasing the membrane charge density; however, this enhancement occurred only within a narrow window and subsequently exhibited a plateau over a threshold density. The complex interplay between pore−pore interactions and fluid structuration for ion transport across the upscaled nanoporous membranes helped explain the obtained results with the aid of numerical simulations. Consequently, the power generation efficiency of the multipore membrane deteriorated, deviating considerably from the case of simple linear extrapolation of the behavior of the single-pore counterparts. A plateau in the output electric power was observed at a moderate charge density, affording a value of 210 W m−2 at a 50-fold salinity difference with a temperature gradient of 40 K. This study has far-reaching implications for discerning an optimal range of membrane charge populations for augmenting the energy extraction, rather than intuitively focusing on achieving high densities.

Electrokinetic Phenomena for Membrane Charge

2017 ◽  
pp. 405-422 ◽  
Author(s):  
D.L. Oatley-Radcliffe ◽  
N. Aljohani ◽  
P.M. Williams ◽  
N. Hilal
Keyword(s):  
Electrokinetic Phenomena ◽  
Membrane Charge

scholarly journals Bacterial strategies of resistance to antimicrobial peptides

2016 ◽  
Vol 371 (1695) ◽  
pp. 20150292 ◽  
Author(s):  
Hwang-Soo Joo ◽  
Chih-Iung Fu ◽  
Michael Otto
Keyword(s):  
Antimicrobial Peptides ◽  
Innate Immune System ◽  
Evolutionary Ecology ◽  
Resistance Mechanisms ◽  
Innate Immune ◽  
Surface Structures ◽  
Antimicrobial Drugs ◽  
Bacterial Surface ◽  
Membrane Charge ◽  
Virulence Potential

Antimicrobial peptides (AMPs) are a key component of the host's innate immune system, targeting invasive and colonizing bacteria. For successful survival and colonization of the host, bacteria have a series of mechanisms to interfere with AMP activity, and AMP resistance is intimately connected with the virulence potential of bacterial pathogens. In particular, because AMPs are considered as potential novel antimicrobial drugs, it is vital to understand bacterial AMP resistance mechanisms. This review gives a comparative overview of Gram-positive and Gram-negative bacterial strategies of resistance to various AMPs, such as repulsion or sequestration by bacterial surface structures, alteration of membrane charge or fluidity, degradation and removal by efflux pumps. This article is part of the themed issue ‘Evolutionary ecology of arthropod antimicrobial peptides’.

scholarly journals Localization-specific distributions of protein pI in human proteome are governed by local pH and membrane charge

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Atsushi Kurotani ◽  
Alexander A. Tokmakov ◽  
Ken-Ichi Sato ◽  
Vasily E. Stefanov ◽  
Yutaka Yamada ◽  
...  
Keyword(s):  
Human Proteome ◽  
Membrane Charge ◽  
Local Ph

scholarly journals Lipid packing defects and membrane charge control RAB GTPase recruitment

Traffic ◽  
2018 ◽  
Vol 19 (7) ◽  
pp. 536-545 ◽  
Author(s):  
Guillaume Kulakowski ◽  
Hugo Bousquet ◽  
Jean-Baptiste Manneville ◽  
Patricia Bassereau ◽  
Bruno Goud ◽  
...  
Keyword(s):  
Rab Gtpase ◽  
Lipid Packing ◽  
Charge Control ◽  
Membrane Charge ◽  
Packing Defects
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