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Membranes, Volume 13, Issue 6

June 2023 - 74 articles

Cover Story: Permeation through biomembranes is ubiquitous for drugs to reach their active sites. Here, we describe the interaction of a homologous series of amphiphiles with lipid bilayers of different compositions, including an asymmetric bilayer. The behavior of the amphiphiles during permeation was described regarding orientation, chain elongation, and H-bonding to lipid and water molecules. Permeability coefficients were also calculated using the inhomogeneous solubility-diffusion model (ISDM). Quantitative agreement with values obtained from kinetic modeling could not be obtained. However, a better qualitative match was achieved when the equilibrium location of the amphiphiles was taken as a reference for the PMF profiles used in the ISDM instead of the usual choice of the reference in bulk water. View this paper
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Articles (74)

  • Feature Paper
  • Review
  • Open Access
163 Citations
29,869 Views
24 Pages

Challenges and Solutions for Global Water Scarcity

  • Hilla Shemer,
  • Shlomo Wald and
  • Raphael Semiat

Climate change, global population growth, and rising standards of living have put immense strain on natural resources, resulting in the unsecured availability of water as an existential resource. Access to high-quality drinking water is crucial for d...

  • Article
  • Open Access
2,741 Views
17 Pages

Optical Properties and Interference Effects of the Lens Mitochondrion

  • Felix Margadant,
  • Zakaria Almsherqi,
  • Xiaochun Xu and
  • Yuru Deng

The lens mitochondrion of the tree shrew, located along the optical pathway between the lens and photoreceptors, has been investigated. The results suggest that the lens mitochondrion acts as a quasi-bandgap or imperfect photonic crystal. Interferenc...

  • Article
  • Open Access
14 Citations
4,293 Views
12 Pages

Preparation of PVDF-PVP Composite Membranes for Oily Wastewater Treatment

  • Sutrasno Kartohardjono,
  • Ghofira Muna Khansa Salsabila,
  • Azzahra Ramadhani,
  • Irfan Purnawan and
  • Woei Jye Lau

The oil and gas industry and related applications generate large quantities of oily wastewater, which can adversely affect the environment and human health if not properly handled. This study aims to prepare polyvinylidene fluoride (PVDF) membranes i...

  • Communication
  • Open Access
6 Citations
2,109 Views
12 Pages

The present study is an attempt to improve thermal, mechanical and electrical properties of poly (methyl methacrylate) (PMMA). For this purpose, vinyltriethoxysilane (VTES) was grafted covalently on the surface of graphene oxide (GO). This VTES funct...

  • Article
  • Open Access
2,325 Views
16 Pages

Saline Retention and Permeability of Nanofiltration Membranes Versus Resistance and Capacitance as Obtained from Impedance Spectroscopy under a Concentration Gradient

  • Miguel-Ángel Pérez,
  • Silvia Gallego,
  • Laura Palacio,
  • Antonio Hernández,
  • Pedro Prádanos and
  • Francisco Javier Carmona

Impedance spectroscopy has been widely used for the study of the electrical properties of membranes for their characterization. The most common use of this technique is the measure of the conductivity of different electrolyte solutions to study the b...

  • Article
  • Open Access
10 Citations
10,613 Views
15 Pages

Conformational State of Fenamates at the Membrane Interface: A MAS NOESY Study

  • Ilya A. Khodov,
  • Konstantin V. Belov,
  • Daniel Huster and
  • Holger A. Scheidt

The present work analyzes the 1H NOESY MAS NMR spectra of three fenamates (mefenamic, tolfenamic, and flufenamic acids) localized in the lipid–water interface of phosphatidyloleoylphosphatidylcholine (POPC) membranes. The observed cross-peaks i...

  • Review
  • Open Access
5 Citations
4,670 Views
21 Pages

Bringing GPCR Structural Biology to Medical Applications: Insights from Both V2 Vasopressin and Mu-Opioid Receptors

  • Aurélien Fouillen,
  • Julien Bous,
  • Sébastien Granier,
  • Bernard Mouillac and
  • Remy Sounier

G-protein coupled receptors (GPCRs) are versatile signaling proteins that regulate key physiological processes in response to a wide variety of extracellular stimuli. The last decade has seen a revolution in the structural biology of clinically impor...

  • Article
  • Open Access
12 Citations
6,142 Views
23 Pages

Membranes in Water Reclamation: Treatment, Reuse and Concentrate Management

  • Sukanyah Devaisy,
  • Jaya Kandasamy,
  • Tien Vinh Nguyen,
  • Harsha Ratnaweera and
  • Saravanamuthu Vigneswaran

In this article, an extensive examination is provided on the possible uses of membranes and hybrid processes in wastewater treatment. While membrane technologies face certain constraints, such as membrane fouling and scaling, the incomplete eliminati...

  • Article
  • Open Access
31 Citations
4,624 Views
28 Pages

Nano-Chitosan/Eucalyptus Oil/Cellulose Acetate Nanofibers: Manufacturing, Antibacterial and Wound Healing Activities

  • Nagwa A. Elbhnsawi,
  • Bassma H. Elwakil,
  • Ahmed H. Hassanin,
  • Nader Shehata,
  • Salma Sameh Elshewemi,
  • Mohamed Hagar and
  • Zakia A. Olama

Accelerated wound healing in infected skin is still one of the areas where current therapeutic tactics fall short, which highlights the critical necessity for the exploration of new therapeutic approaches. The present study aimed to encapsulate Eucal...

  • Article
  • Open Access
10 Citations
1,839 Views
12 Pages

Strontium and cobalt-free LaNi0.6Fe0.4O3–δ is considered one of the most promising electrodes for solid-state electrochemical devices. LaNi0.6Fe0.4O3–δ has high electrical conductivity, a suitable thermal expansion coefficient, satisfactory tolerance...

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Membranes - ISSN 2077-0375