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Showing 1-30 of 57 results for "85409" within Papers
Sung-Jin Kim et al.
Lab on a chip, 13(8), 1644-1648 (2013-02-23)
We present experiments and theory of a constant flow-driven microfluidic oscillator with widely tunable oscillation periods. This oscillator converts two constant input-flows from a syringe pump into an alternating, periodic output-flow with oscillation periods that can be adjusted to between
Carme Valls-Cantenys et al.
Analytica chimica acta, 770, 85-93 (2013-03-19)
An extraction and preconcentration procedure for the determination in water samples of several halogenated flame retardants (FRs), nine brominated diphenyls ethers (BDEs) and seven non-BDE FRs, was developed and validated. The optimised procedure is based on polydimethylsiloxane (PDMS) rods as
Sri Ram Krishna Vedula et al.
Nature materials, 13(1), 87-96 (2013-12-03)
The ability of skin to act as a barrier is primarily determined by the efficiency of skin cells to maintain and restore its continuity and integrity. In fact, during wound healing keratinocytes migrate collectively to maintain their cohesion despite heterogeneities
Florent Badique et al.
Biomaterials, 34(12), 2991-3001 (2013-01-30)
We have recently demonstrated strong nuclear deformation of SaOs-2 osteosarcoma cells on poly-L-lactic acid (PLLA) micropillar substrates. In the present study, we first demonstrated that chemical and mechanical properties of the micropillar substrates have no dominant effect on deformation. However
Yuwei Liu et al.
Langmuir : the ACS journal of surfaces and colloids, 29(9), 2897-2905 (2013-02-12)
Poly(dimethylsiloxane) (PDMS) materials have been extensively shown to function as excellent fouling-release (FR) coatings in the marine environment. The incorporation of biocide moieties, such as quaternary ammonium salts (QAS), can impart additional antibiofouling properties to PDMS-based FR coating systems. In
Karthik R Balakrishnan et al.
Lab on a chip, 13(7), 1302-1307 (2013-02-07)
Resistive-pulse sensing (RPS), which is based on measuring the current pulse produced when a single particle transits a pore or channel, is an extremely versatile technique used to determine the size and concentration of cells and viruses and to detect
M S Schlicht et al.
European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery, 46(4), 447-452 (2013-08-13)
This study was performed to determine the feasibility of measuring the elastic properties of the arterial wall in vivo. To prove this concept, elastic parameters were calculated from an aortic model of elastic behavior similar to a human aorta using
The future of microfluidics for biomarker detection.
Kazuo Hosokawa
Bioanalysis, 5(17), 2073-2075 (2013-08-22)
Lian-Jun Bao et al.
Environmental toxicology and chemistry, 32(9), 1946-1953 (2013-05-11)
Solid-phase microextraction (SPME) has often been used to estimate the freely dissolved concentration (Cfree ) of organic contaminants in sediments. A significant limitation in the application of SPME for Cfree measurement is the requirement for attaining equilibrium partition, which is
Cong Hu et al.
Journal of chromatography. A, 1356, 45-53 (2014-07-09)
In this work, metal-organic frameworks (MOFs, Al-MIL-53-NH₂) were synthesized via the hydrothermal method, and novel polydimethylsiloxane/metal-organic framework (PDMS/MOFs, PDMS/Al-MIL-53-NH₂)-coated stir bars were prepared by the sol-gel technique. The preparation reproducibility of the PDMS/MOFs-coated stir bar was good, with relative standard
Kristina Kreppenhofer et al.
Langmuir : the ACS journal of surfaces and colloids, 29(11), 3797-3804 (2013-02-23)
Here we demonstrate the generation of polymer monolithic surfaces possessing a gradient of pore and polymer globule sizes from ~0.1 to ~0.5 μm defined by the composition of two polymerization mixtures injected into a microfluidic chip. To generate the gradient
Attila Gaspar et al.
Electrophoresis, 34(8), 1249-1252 (2013-02-13)
This paper demonstrates the use of surface plasmon resonance to study adsorption (either reversible or irreversible) of detergents on PDMS surfaces in real time. The surface plasmon resonance measurements can directly provide information about the adsorption/desorption processes of detergents on
M Findeisen et al.
Magnetic resonance in chemistry : MRC, 45(2), 175-178 (2006-12-13)
Most established NMR thermometers rely on temperature-dependent chemical shift differences measured from samples that are either neat or concentrated solutions (e.g. ethylene glycol, methanol). These are unsuitable for modern cryoprobes on account of strong radiation damping resulting from the high
Thomas-Benjamin Seiler et al.
Chemosphere, 112, 77-84 (2014-07-23)
As part of the risk assessment process within REACh, prior to manufacturing and distribution of chemical substances their (eco)toxicological impacts have to be investigated. The fish embryo toxicity test (FET) with the zebrafish Danio rerio has gained a high significance
Mengting Chen et al.
Chemical communications (Cambridge, England), 49(16), 1612-1614 (2013-01-22)
We have manufactured a highly conductive and stretchable composite by backfilling a preformed graphene/MWCNT aerogel with poly(dimethylsiloxane) (PDMS). The electrical conductivity of our product can reach 2.8 S cm(-1) with only 1.3 wt% graphene/MWCNT loading, and remains constant after 100
Daniel T Ginat et al.
JAMA otolaryngology-- head & neck surgery, 139(2), 199-201 (2013-02-23)
Silastic implants are popular for cosmetic cheek augmentation. We describe the computed tomographic (CT) and magnetic resonance imaging (MRI) findings in 5 cases (4 patients) with penetration of the medial aspect of Silastic cheek implants through the anterior maxillary sinus
Sara Gonçalves et al.
Colloids and surfaces. B, Biointerfaces, 109, 228-235 (2013-05-11)
Poly(dimethyl siloxane) (PDMS) was surface-polymerized with poly(ethylene glycol)methacrylate (PEGMA) by surface-initiated atom transfer radical polymerization (SI-ATRP) in aqueous media at room temperature. Modification of the PDMS surface followed a three-step procedure: (i) PDMS surface hydroxylation by UV/ozone exposure, immediately followed
M Krutyeva et al.
Physical review letters, 110(10), 108303-108303 (2013-03-26)
We present neutron spin echo experiments that address the much debated topic of dynamic phenomena in polymer melts that are induced by interacting with a confining surface. We find an anchored surface layer that internally is highly mobile and not
M C Prieto-Blanco et al.
The Science of the total environment, 503-504, 105-112 (2014-08-13)
This report describes a polydimethylsiloxane (PDMS)-thymol/nitroprusside delivery composite sensor for direct monitoring of ammonium in environmental water samples. The sensor is based on a PDMS support that contains the Berthelot's reaction reagents. To prepare the PDMS-thymol/nitroprusside composite discs, thymol and
John R Fowler et al.
The Orthopedic clinics of North America, 44(3), 425-431 (2013-07-06)
Radial head fractures without associated bony or ligamentous injury can be safely treated with internal fixation, if possible, or arthroplasty if nonreconstructable. However, nonreconstructable radial head fractures in association with elbow dislocation and/or ligamentous injury in the elbow or forearm
Low-temperature atomic layer deposition of Al2O3 thin coatings for corrosion protection of steel: surface and electrochemical analysis.
Diaz B, et al.
Corrosion Science, 53(6), 2168-2175 (2011)
Daniela Karadzovska et al.
Cutaneous and ocular toxicology, 32(4), 283-289 (2013-04-18)
The membrane-coated fiber (MCF) array technique was previously demonstrated to be a rapid, quantitative assessment of the percutaneous absorption of volatile compounds, capable of studying chemical mixtures and their synergistic effects. In particular, three commercially available fiber coatings (polydimethylsiloxane, polyacrylate
Editorial comment.
John M Gatti
The Journal of urology, 192(6), 1799-1800 (2014-08-30)
Masahiro Imahashi et al.
Journal of colloid and interface science, 406, 186-195 (2013-06-27)
Sensors that recognize molecules are acquired for the comprehensive detection of great many kinds of gases. Adsorbents with high molecular recognition and condensation ability were developed for selective gas sensing with a molecular imprinting technique. Developed adsorbents have multilayer structures
Nobuo Yoshimoto et al.
Scientific reports, 3, 1191-1191 (2013-02-05)
When establishing the most appropriate cells from the huge numbers of a cell library for practical use of cells in regenerative medicine and production of various biopharmaceuticals, cell heterogeneity often found in an isogenic cell population limits the refinement of
Julie C Kohn et al.
Journal of the mechanical behavior of biomedical materials, 20, 316-326 (2013-03-23)
Nanoindentation is a valuable tool for characterization of biomaterials due to its ability to measure local properties in heterogeneous, small or irregularly shaped samples. However, applying nanoindentation to compliant, hydrated biomaterials leads to many challenges including adhesion between the nanoindenter
Tindaro Ioppolo et al.
Journal of visualized experiments : JoVE, (71)(71), e50199-e50199 (2013-02-15)
Optical modes of dielectric micro-cavities have received significant attention in recent years for their potential in a broad range of applications. The optical modes are frequently referred to as "whispering gallery modes" (WGM) or "morphology dependent resonances" (MDR) and exhibit
Lin Wang et al.
Lab on a chip, 13(8), 1586-1592 (2013-02-28)
Capability of measuring and monitoring local oxygen concentration at the single cell level (tens of microns scale) is often desirable but difficult to achieve in cell culture. In this study, biocompatible oxygen sensing beads were prepared and tested for their
Xi Ke et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 14(5), 946-951 (2013-02-26)
The fabrication of patterned microstructures in poly(dimethylsiloxane) (PDMS) is a prerequisite for soft lithography. Herein, curvilinear surface relief microstructures in PDMS are fabricated through a simple three-stage approach combining microcontact printing (μCP), selective surface wetting/dewetting and replica molding (REM). First
Giada Graziana Genchi et al.
Colloids and surfaces. B, Biointerfaces, 105, 144-151 (2013-02-12)
Stable surface modifications of polydimethylsiloxane (PDMS) are of crucial importance for the exploitation of the versatile physical properties of silicone in many biological applications. Surface hydrophobic recovery in fact poses severe time limitations to the observation of biological events and
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