نتایج جستجو برای: hydrophobic layer

تعداد نتایج: 313991  

Journal: :eLife 2021

Numerous proteins target lipid droplets (LDs) through amphipathic helices (AHs). It is generally assumed that AHs insert bulky hydrophobic residues in packing defects at the LD surface. However, this model does not explain targeting of perilipins, most abundant and specific LDs, which are weakly hydrophobic. A striking example Plin4, whose gigantic repetitive AH lacks residues. Using a range co...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

Journal: :Bioresources 2023

In many of its current and potential applications, technologists treat the surface cellulose to render it more hydrophobic. By use a variety hydrophobic sizing treatment strategies, bulk phase becomes covered up with layer having lower polarity less inclination interact water. Often, goal is relatively low amount additive cover or change just cellulosic material, while still benefiting from str...

Journal: :Cellulose 2021

Cotton based nonwovens with unidirectional water-transport through the thickness of fabric were prepared using atmospheric plasma technology. In controlling deposition parameters, a thin layer polymerized Hexamethyldisiloxane was locally deposited onto cotton nonwoven fabric, so that only treated surface hydrophobic, while untreated remained hydrophilic. The water contact angle, morphology and ...

2014
Wenjing Dong Kenan Zhang Yun Zhang Tiaoxing Wei Yan Sun Xin Chen Ning Dai

We describe a strategy for selectively coating the vertical surfaces of standing nanopillars using area-selective atomic layer deposition (ALD). Hydrophobic self-assembled monolayers (SAMs) are utilised to selectively inhibit the coating of oxides on the modified horizontal regions to ensure that only the vertical surfaces of vertical standing nanorods are coated using ALD processes. This metho...

Journal: :International Journal of Nanomedicine 2008
Erik Pierstorff Dean Ho

The release of therapeutic drugs from the surface of implantable devices is instrumental for the reduction of medical costs and toxicity associated with systemic administration. In this study we demonstrate the triblock copolymer-mediated deposition and release of multiple therapeutics from a single thin film at the air-water interface via Langmuir-Blodgett deposition. The dual drug elution of ...

2015
Xuming Zhang Guosong Wu Xiang Peng Limin Li Hongqing Feng Biao Gao Kaifu Huo Paul K. Chu

Rapid corrosion of magnesium alloys is undesirable in structural and biomedical applications and a general way to control corrosion is to form a surface barrier layer isolating the bulk materials from the external environment. Herein, based on the insights gained from the anticorrosion behavior of corrosion products, a special way to mitigate aqueous corrosion is described. The concept is based...

Journal: :Integrative and comparative biology 2014
Alyssa Y Stark Brandon McClung Peter H Niewiarowski Ali Dhinojwala

The gecko adhesive system is dependent on weak van der Waals interactions that are multiplied across thousands of fine hair-like structures (setae) on geckos' toe pads. Due to the requirements of van der Waals forces, we expect that any interruption between the setae and substrate, such as a water layer, will compromise adhesion. Our recent results suggest, however, that the air layer (plastron...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1999
G Sposito N T Skipper R Sutton S Park A K Soper J A Greathouse

Clay minerals are layer type aluminosilicates that figure in terrestrial biogeochemical cycles, in the buffering capacity of the oceans, and in the containment of toxic waste materials. They are also used as lubricants in petroleum extraction and as industrial catalysts for the synthesis of many organic compounds. These applications derive fundamentally from the colloidal size and permanent str...

2016
Xi Lu

A hydrophilic wood surface was transformed to become superhydrophobic by layer-by-layer (LbL) assembly of polyelectrolyte/titanium dioxide (TiO2) nanoparticles multilayers and subsequent hydrophobic modification with 1H, 1H, 2H, 2H-perfluoroalkyltriethoxysilane (POTS). The chemical composition of the wood samples before and after treatment was characterized by energy dispersive X-ray analysis (...

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