نتایج جستجو برای: bilayer beam

تعداد نتایج: 130252  

Journal: :International Journal of Molecular Sciences 2008
Kervin O. Evans

Quartz crystal microbalance with dissipation (QCM-D) monitoring and atomic force microscopy (AFM) were combined to evaluate the defects created by an ionic liquid anion and a cation in a supported phospholipid bilayer composed of zwitterionic lipids on a silica surface. The cation 1-octyl-3-methyl imidazolium (OMIM(+)) was shown to remove lipids from the bilayer, increase the roughness to appro...

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Journal: Iranian Journal of Pharmaceutical Sciences 2017
Hamidreza Moghimi, Mahsa Narenji, Mohammadreza Talaee,

Liposomes are widely used as drug delivery systems in different forms including osmotic pumps, infusion and IV injection. In spite of these, there is no data available about their behavior under convective flow (e.g. infusion or osmotic pumps) and upon stagnation in such drug delivery systems. As a part of a series of investigations in this area, the present study investigates the effects of vi...

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2002
L. Ma N. D. Weiner

The partitioning of the n-alkyl-p-aminobenzoates into the lipid bilayer is dependent not only on their physicochemical properties, but also on temperature and bilayer composition. Partitioning studies with this homologous series demonstrate the effect of alkyl chain length on partitioning in pure DPPC liposomes at 23 and 50°C and in DPPC : Chol liposomes at 23°C. A general trend is observed whe...

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Journal: :The Journal of General Physiology 2004
Jens A. Lundbæk Pia Birn Anker J. Hansen Rikke Søgaard Claus Nielsen Jeffrey Girshman Michael J. Bruno Sonya E. Tape Jan Egebjerg Denise V. Greathouse Gwendolyn L. Mattice Roger E. Koeppe Olaf S. Andersen

Membrane proteins are regulated by the lipid bilayer composition. Specific lipid-protein interactions rarely are involved, which suggests that the regulation is due to changes in some general bilayer property (or properties). The hydrophobic coupling between a membrane-spanning protein and the surrounding bilayer means that protein conformational changes may be associated with a reversible, loc...

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2013
Yonghua Deng Zhenyu Qian Yin Luo Yun Zhang Yuguang Mu Guanghong Wei

Recent experiments in function mechanism study reported that a pH low-insertion peptide (pHLIP) can insert into a zwitterionic palmitoyloleoylphosphatidylcholine (POPC) lipid bilayer at acidic pH while binding to the bilayer surface at basic pH. However, the atomic details of the pH-dependent interaction of pHLIP with a POPC bilayer are not well understood. In this study, we investigate the det...

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Journal: :The Analyst 2013

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Journal: :Acta biochimica Polonica 2015
Michał Markiewicz Krzysztof Baczyński Marta Pasenkiewicz-Gierula

Molecular dynamics simulations of 1,2-di-O-acyl-3-O-β-D-galactopyranosyl-sn-glycerol (MGDG) and 1,2-dioleoyl-sn-glycero-3-phosphatidylcholine (DOPC) bilayers were carried out to compare the effect of the lipid head group's chemical structure on the dynamics and orientational order of the water molecules hydrating the bilayer. The effect of the bilayers on the diffusion of water is strong for th...

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Journal: :Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena 2014

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Journal: :Biophysical Journal 2010

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Journal: :Nano letters 2009
Gilgueng Hwang Hideki Hashimoto

This paper presents the fabrication, assembly, and characterization of piezoresistive nanosprings for creating nanoelectromechanical systems. The fabrication process is based on conventional microfabrication techniques to create a planar pattern in a 27nm thick, n-type InGaAs/GaAs bilayer that self-forms into three-dimensional structures during a wet etch release. As the nanosprings have lower ...

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