نتایج جستجو برای: surface hydrophobic

تعداد نتایج: 660272  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Keith M Bromley Ryan J Morris Laura Hobley Giovanni Brandani Rachel M C Gillespie Matthew McCluskey Ulrich Zachariae Davide Marenduzzo Nicola R Stanley-Wall Cait E MacPhee

The majority of bacteria in the natural environment live within the confines of a biofilm. The Gram-positive bacterium Bacillus subtilis forms biofilms that exhibit a characteristic wrinkled morphology and a highly hydrophobic surface. A critical component in generating these properties is the protein BslA, which forms a coat across the surface of the sessile community. We recently reported the...

Abdol-Khalegh Bordbar

In the present study, the binding isotherms for interaction of a homologous series of n-alkyltrimethyl ammonium bromides with bovine serum albumin (BSA) have been analyzed on basis of intrinsic thermodynamic quantities. In this regards, the intrinsic Gibbs free energy of binding, AGb(i,)„ has been estimated at various surfactant concentrations and its trend of variation for both binding sets ha...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2006
Emily E Meyer Kenneth J Rosenberg Jacob Israelachvili

We present here a brief review of direct force measurements between hydrophobic surfaces in aqueous solutions. For almost 70 years, researchers have attempted to understand the hydrophobic effect (the low solubility of hydrophobic solutes in water) and the hydrophobic interaction or force (the unusually strong attraction of hydrophobic surfaces and groups in water). After many years of research...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
Isabella Daidone Martin B Ulmschneider Alfredo Di Nola Andrea Amadei Jeremy C Smith

Recent work has shown that the nature of hydration of pure hydrophobic surfaces changes with the length scale considered: water hydrogen-bonding networks adapt to small exposed hydrophobic species, hydrating or "wetting" them at relatively high densities, whereas larger hydrophobic areas are "dewetted" [Chandler D (2005), Nature 29:640-647]. Here we determine whether this effect is also present...

2010
Jiang Hong Yunfei Hu Congmin Li Zongchao Jia Bin Xia Changwen Jin

Antifreeze protein (AFP) has a unique function of reducing solution freezing temperature to protect organisms from ice damage. However, its functional mechanism is not well understood. An intriguing question concerning AFP function is how the high selectivity for ice ligand is achieved in the presence of free water of much higher concentration which likely imposes a large kinetic barrier for pr...

Journal: :journal of physical & theoretical chemistry 2006
abdol-khalegh bordbar

in the present study, the binding isotherms for interaction of a homologous series of n-alkyltrimethyl ammonium bromides with bovine serum albumin (bsa) have been analyzed on basis of intrinsic thermodynamic quantities. in this regards, the intrinsic gibbs free energy of binding, agb(i,)„ has been estimated at various surfactant concentrations and its trend of variation for both binding sets ha...

Journal: :Physical chemistry chemical physics : PCCP 2011
Masami Shibukawa Yoshiki Kondo Yawara Ogiyama Keita Osuga Shingo Saito

Recent spectrophotometric and molecular dynamics simulation studies have shown that the physicochemical properties and structures of water in the vicinity of hydrophobic surfaces differ from those of the bulk water. However, the interfacial water acting as a separation medium on hydrophobic surfaces has never been detected and quantified experimentally. In this study, we show that small inorgan...

2017
DARINA JASIKOVA MICHAL KOTEK SIMONA FIALOVA VACLAV KOPECKY

The branch of fluid mechanics is also familiar with biomechanics recently. The combination of hydrodynamic and mechanical specification of the flow can reach the complex description of the liquid flow in the hydraulic system. The hydraulic system can represent the airways and ventilation system, and external blood circulation. An important role in the study of hemo-transport has its interaction...

In this study a series of epoxy/silica nanocomposites were prepared by using nano silica particles which had different surface modifications. The morphology of the nanocomposite coatings was characterized by scanning electron microscopy SEM. The effects of the hydrophilic and hydrophobic feature of the nano particles on the Tg and anticorrosive properties of nanocomposite coatings were evaluate...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2013
Hiroyuki Arafune Akira Yamaguchi Kazuhiro Hotta Tetsuji Itoh Norio Teramae

The purpose of this study is to apply optical waveguide (OWG) spectroscopy to characterize the encapsulation behavior of enzymes modified with polyethylene glycol (PEG), i.e. pegylation, in a hydrophobic mesoporous silica film. For that purpose, pegylated myoglobin (PEG-Mb) was introduced into the silica mesopores modified with octadecylsilyl (ODS) groups and studied by OWG spectroscopy. OWG ...

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