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Showing 1-30 of 161 results for "414565" within Papers
Seshadri Reddy Ankireddy et al.
International journal of nanomedicine, 10 Spec Iss, 121-128 (2015-09-09)
Microbeads are frequently used as solid supports for biomolecules such as proteins and nucleic acids in heterogeneous microfluidic assays. Chip-based, quantum dot (QD)-bead-biomolecule probes have been used for the detection of various types of DNA. In this study, we developed
Jiangyong Gu et al.
Journal of chromatography. A, 1218(45), 8150-8155 (2011-10-11)
In this work, we prepared a monolithic and surface initiated molecularly imprinted polymeric (MIP) column for HPLC and explored its application for template separation from plant extract. The silica beads (40-60 μm) were coupled with initiator on the surface and
K M Frankowski et al.
Journal of dairy science, 97(9), 5356-5370 (2014-07-16)
Many food companies are trying to limit the amount of sodium in their products. Permeate, the liquid remaining after whey or milk is ultrafiltered, has been suggested as a salt substitute. The objective of this study was to determine the
Chariya Kaewsaneha et al.
ACS applied materials & interfaces, 7(42), 23373-23386 (2015-10-07)
Fluorescent-magnetic particles (FMPs) play important roles in modern materials, especially as nanoscale devices in the biomedical field. The interesting features of FMPs are attributed to their dual detection ability, i.e., fluorescent and magnetic modes. Functionalization of FMPs can be performed
Synthesis of monodisperse poly(divinylbenzene) microspheres
Li K and Stover HDH
Journal of Polymer Science Part A: Polymer Chemistry, 31, 3257-3263 null
Abhishek Chauhan et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1001, 66-74 (2015-08-11)
In the present communication, uniformly sized molecularly imprinted polymer (MIP) as nanospheres were synthesized based on precipitation polymerization using dual-template imprinting approach and used it as sorbent for solid phase extraction of six urinary benzene metabolites (UBMs). This approach in
Dalia Y Sosa et al.
Molecules (Basel, Switzerland), 20(1), 52-69 (2014-12-30)
The semicontinuous heterophase polymerization of styrene in the presence of cross-linking and porogen agents was carried out. Latexes with close to 20% solid content, which contained mesoporous nanoparticles with 28 nm in average diameters, up to 0.5 cm3/g in porosity
Igor Jerković et al.
Natural product communications, 10(2), 357-360 (2015-04-30)
Headspace solid-phase microextraction (HS-SPME), ultrasonic solvent extraction (USE) and solid phase extraction (SPE), followed by GC-FID/MS were used for screening of dandelion (Taraxacum officinale Weber) honey headspace, volatiles and semi-volatiles. The obtained results constitute a breakthrough towards screening of dandelion
Trishna Saigal et al.
Langmuir : the ACS journal of surfaces and colloids, 29(12), 3999-4007 (2013-03-02)
Multiarm star copolymers with approximately 460 poly(ethylene oxide) (PEO) arms that have a degree of polymerization N = 45 were synthesized via atom transfer radical polymerization (ATRP) of PEO-methacrylate macromonomers in the presence of divinyl benzene cross-linkers. These are an
Michał Brokl et al.
Journal of chromatography. A, 1370, 216-229 (2014-12-03)
A method involving headspace solid-phase microextraction (HS-SPME) and comprehensive two-dimensional gas chromatography (GC×GC) coupled to time-of-flight mass spectrometry (TOFMS) was developed and applied to evaluate profiles of volatile compounds present in mainstream tobacco smoke particulate matter trapped on glass fiber
Riin Rebane et al.
Journal of chromatography. A, 1390, 62-70 (2015-03-12)
Derivatization is one of the most common ways for improving chromatographic separation and sensitivity for LC-ESI-MS analysis. The aim of this work was to design new derivatization reagents for LC-ESI-MS analysis of amino acids which would (1) provide good reversed
Synthesis and Characterization of Linear Poly (divinylbenzene-co-ethylvinylbenzene) via a Cationic Solid Catalyst.
Bensaada N, et al.
Orient. J. Chem., 29(4), 1631-1635 (2014)
Elżbieta Kociołek-Balawejder et al.
Journal of hazardous materials, 189(3), 794-800 (2011-04-09)
The possibility of oxidizing As(III) to As(V) in aqueous solutions by means of heterogeneous oxidants, i.e. synthetic macromolecular redox compounds, was studied. The materials contain N-chlorosulfonamide functional groups in the sodium form: [P]-SO(2)NClNa (R/ClNa, 2.1 mmol/g) or in the hydrogen
Stanisław Popiel et al.
Analytica chimica acta, 837, 52-63 (2014-07-09)
Novel solid-phase microextraction (SPME) fibres containing methyl, ethyl, butyl acrylate and methacrylate were first prepared by a sol-gel technique and investigated for determination of selected organoarsenic compounds (lewisite, methyldichloroarsine, phenyldichloroarsine, diphenylchloroarsine and triphenylarsine) from water samples. The influence of sorption
Peter J Oefner et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 782(1-2), 27-55 (2002-11-30)
The introduction of alkylated, nonporous poly-(styrene-divinylbenzene) microparticles in 1992 enabled the subsequent development of denaturing HPLC that has emerged as the most sensitive screening method for mutations to date. Denaturing HPLC has provided unprecedented insight into human origins and prehistoric
Shuai Xu et al.
Langmuir : the ACS journal of surfaces and colloids, 28(6), 3271-3278 (2012-02-01)
An effective method was developed for synthesizing magnetite/polymer colloidal composite microspheres with controllable variations in size and shape of the nanostructures and desirable interfacial chemical functionalities, using surfactant-free seeded emulsion polymerization with magnetite (Fe(3)O(4)) colloidal nanocrystal clusters (CNCs) as the
Jing Song et al.
Journal of colloid and interface science, 452, 190-198 (2015-05-06)
The layer-by-layer (LBL) technique was employed for preparing fluorescent microspheres with a core-shell structure by the alternating adsorption of positively charged poly(p-phenylenevinylene) precursor (pre-PPV) and the polyanions onto polymer substrate spheres, followed by the thermal elimination to convert pre-PPV into
Toine Hillenaar et al.
Investigative ophthalmology & visual science, 52(5), 2136-2146 (2010-11-13)
To report intra- and interinstrument calibration methods for corneal backscatter analysis by in vivo confocal microscopy. Applicability of two reference standards was evaluated for corneal backscatter calibration. Repeated measurements of four concentrations of AMCO Clear (GFS Chemicals, Inc., Powell, OH)
E Passas-Lagos et al.
Langmuir : the ACS journal of surfaces and colloids, 31(28), 7749-7757 (2015-07-15)
Iron-based mushroom-type Janus particles consisting of a poly(sytrene-co-divinylbenzene) and a silica moiety both with controllable morphologies were successfully synthesized on the gram scale and investigated as surfactants for Pickering emulsions. Two oil-water model systems, namely toluene-water and vegetable oil-water, were
Maryam Lashgari et al.
Talanta, 141, 200-206 (2015-05-13)
In the present study, micro-solid phase extraction (µ-SPE) followed by liquid chromatography-triple tandem mass spectrometery (LC-MS/MS) was developed for the determination of perfluorocarboxylic acids (PFCAs) at trace levels in water samples. The µ-SPE device comprised of a porous polypropylene membrane
Ikuo Ueta et al.
Analytica chimica acta, 746, 77-83 (2012-09-15)
A novel needle-type sample preparation device was developed for the effective preconcentration of volatile organic compounds (VOCs) in indoor air before gas chromatography-mass spectrometry (GC-MS) analysis. To develop a device for extracting a wide range of VOCs typically found in
Freek Spitaels et al.
Food microbiology, 47, 1-11 (2015-01-15)
Gueuze beers are prepared by mixing young and old lambic beers and are bottle-refermented spontaneously for aging. The present study analyzed the microbiota and metabolites present in gueuze beers that were aged between a few months and up to 17
Rainer Koeck et al.
Analytical and bioanalytical chemistry, 406(24), 5897-5907 (2014-07-25)
Short-term polymerization or the so-called low-conversion polymerization was applied for the preparation of N-vinylcarbazole (NVC) and 1,4-divinylbenzene (DVB) monolithic capillary columns. The synthesis was carried out by thermally initiated free radical copolymerization under the influence of inert micro- (toluene) and
M Pesavento et al.
Analytica chimica acta, 1142, 201-210 (2020-12-08)
There is an increasing interest in determining the concentration of furanic compounds naturally formed in food aqueous matrices, by in situ, fast and low-cost methods. A sensor presenting such characteristics is here proposed, and characterized. It is based on a
Tieyuan Zhang et al.
Environmental science & technology, 49(5), 2969-2976 (2015-02-03)
Elevated concentration of naturally occurring radioactive material (NORM) in wastewater generated from Marcellus Shale gas extraction is of great concern due to potential environmental and public health impacts. Development of a rapid and robust method for analysis of Ra-226, which
Pascal Fuchsmann et al.
Journal of agricultural and food chemistry, 63(34), 7511-7521 (2015-08-01)
To establish the odor profiles of three differently fabricated commercial Swiss Tilsit cheeses, analyses were conducted using headspace solid-phase microextraction gas chromatography-mass spectrometry/pulsed flame photometric detection and gas chromatography-olfactometry to identify and quantitate volatile compounds. In addition, odor quality and
Yan-Shan Huang et al.
PloS one, 9(12), e115840-e115840 (2014-12-24)
The purpose of the present work was to develop a novel, long-acting and potent human serum albumin/granulocyte colony stimulating factor (HSA/G-CSF) therapeutic fusion protein. The novel fusion protein, called HMG, was constructed by genetically fusing mutated human derived G-CSF (mG-CSF)
Bonnie S Watson et al.
Plant physiology, 167(4), 1699-1716 (2015-02-11)
Integrated metabolomics and transcriptomics of Medicago truncatula seedling border cells and root tips revealed substantial metabolic differences between these distinct and spatially segregated root regions. Large differential increases in oxylipin-pathway lipoxygenases and auxin-responsive transcript levels in border cells corresponded to
I Zabaleta et al.
Journal of chromatography. A, 1387, 13-23 (2015-02-25)
An analytical method for the simultaneous determination in fish liver and muscle tissue and mussel samples of 14 perfluorinated compounds (PFCs), including three perfluoroalkylsulfonates (PFSAs), seven perfluorocarboxylic acids (PFCAs), three perfluorophosphonic acids (PFPAs) and perfluorooctanesulfonamide (PFOSA), and 10 potential precursors
Fabrication of activated carbons with well-defined macropores derived from sulfonated poly (divinylbenzene) networks.
Hasegawa, et al.
Carbon, 48(6), 1757-1766 (2010)
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