نتایج جستجو برای: sol

تعداد نتایج: 16896  

2011
Juan C. Tuberquia Won S. Song G. Kane Jennings

Surface Tension. To properly direct the Cassie-Wenzel transition using variations in the surface tension of the aqueous solution (sol ) in contact with the SH film, we first established the behavior of sol  at various mass fractions of ethanol (Figure S1). The surface tension of the liquid was as high as 71.3 mN/m for pure water (water ) and as low as 21.7 mN/m for pure ethanol (EtOH ), and...

Journal: :journal of physical & theoretical chemistry 2007
masoud giahi mohammad ali bagherinia azin azari

sol-gel and polymeric membrane electrodes, based on thiacalix[4]arene as a neutral carrier, weresuccessfully developed for the detection of vo2+ in aqueous solutions. the sol-gel and pvcmembrane electrodes exhibited linear response with nernstian slopes of 29.3 and 28.4 mv perdecade, respectively, within the vanadyl ion concentration ranges from 1.0 × 10-6 to 1.0 × 10-1mol dm-3 and from 1.0 × 1...

1999
Qiang Fu Chuan-Bao Cao He-Sun Zhu

A new sol±gel route was applied to prepare alumina ®lms by using AlCl3 ́6H2O as starting material and acetylacetone (AcAc) as additive. Our research results show that AcAc and aluminum form a complex compound in the sol, which makes the sol very stable. Meanwhile, the complex structure prevents the decomposition going on quickly during the sintering process and the obtained ®lms are free of crac...

2011
J. A. HILLMAN

We show that if M is an orientable 4-dimensional infrasolvmanifold and either β = β1(M ;Q) ≥ 2 or M is a Sol 0or a Sol m,n -manifold (with m 6= n) then M is parallelizable. There are non-parallelizable examples with β = 1 for each of the other solvable Lie geometries E, Nil, Sol 1, Nil 3×E1 and Sol3×E1. We also determine which non-orientable flat 4-manifolds have a Pinor Pin-structure, and cons...

2005
Alain Walcarius Daniel Mandler James A. Cox Maryanne Collinson Ovadia Lev

The implications of organically-modified silica-based materials in electrochemical science is reviewed along with some selected recent trends in the field of functionalized and sol–gel silica electrochemistry. These recent trends include the electro-assisted generation of organosilica films on solid electrode surfaces, the preparation and applications of sol–gel derived composite (carbon, gold,...

2000
JOHN F.T. CONROY MARY E. POWER JASON MARTIN BRIAN EARP BOUVARD HOSTICKA CHARLES E. DAITCH PAMELA M. NORRIS

A novel, high hydrolysis ratio sol-gel route for the biocompatible production of macroporous silica gels is presented. This route exploits the two step nature of the gelation reaction to remove undesired alcohol by-products from an acidic aqueous sol prior to gelation. These alcohol-free sols will gel when the pH is raised to the physiologic range in a two-step, acid/base catalyzed process. Fur...

2006
Richard Fitzpatrick

A simple theoretical model is developed which describes how current eddies are excited in the scrape-off layer SOL of a large-aspect-ratio, low, circular cross-section tokamak by time-varying magnetohydrodynamical instabilities originating from within the plasma. This model is used to study the interaction of SOL currents with tearing modes and resistive wall modes in a typical tokamak plasma. ...

2004
X. Zhang H. Lu

We report on the fabrication and characterization of thick UV-patternable hybrid sol-gel films by spin coating using a modified sol-gel process. Thick coating of 25 microns with crack-free surface can be produced by one spin coating step. Thick layers of more than 100 μm can be obtained with a multi-coating process. Characterization using different techniques including optical microscope and at...

Journal: :The Journal of infectious diseases 2014
Mark H Kuniholm Molly Jung James E Everhart Scott Cotler Gerardo Heiss Geraldine McQuillan Ryung S Kim Howard D Strickler Bharat Thyagarajan Marston Youngblood Robert C Kaplan Gloria Y F Ho

Prevalence of hepatitis C virus (HCV) antibody has been reported in Mexican Americans, but its prevalence in other US Hispanic/Latino groups is unknown. We studied 2 populations of US Hispanic/Latino adults; 3210 from the National Health and Nutrition Examination Survey (NHANES) 2007-2010 and 11 964 from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). Age-standardized prevalenc...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2003
Brian Reid Vladimir N Martinov Arild Njå Terje Lømo Guy S Bewick

Neuromuscular junctions (NMJs) on fast and slow muscle fibers display different transmitter release characteristics that appear well adapted to the different patterns of nerve impulses that they transmit in vivo. Here, we ask whether the release properties of such NMJs, termed fast and slow, can be transformed by chronic nerve stimulation. In young adult rats, nerve impulse conduction in the sc...

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