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Showing 1-30 of 144 results for "169099" within Papers
Munawar Hussain et al.
Talanta, 147, 1-7 (2015-11-26)
We present a fast, robust and straightforward spin force assisted surface imprinting approach for activated platelets and demonstrate that Heparin induced thrombocytopenia (HIT) platelet aggregation can be measured by this approach. A critical and challenging step in functional assays for
Natália G Graebin et al.
Biotechnology progress, 28(2), 406-412 (2012-01-25)
A new biocatalyst of lipase B from Candida antarctica (MCI-CALB) immobilized on styrene-divinylbenzene beads (MCI GEL CHP20P) was compared with the commercial Novozym 435 (immobilized lipase) in terms of their performances as biocatalysts for the esterification of acetic acid and
Rong Yang et al.
Langmuir : the ACS journal of surfaces and colloids, 31(43), 11895-11903 (2015-10-10)
Fouling refers to the undesirable attachment of organic molecules and microorganisms to submerged surfaces. It is an obstacle to the purification of shale gas produced water and is currently without an effective solution due to the highly contaminated nature of
C Barnaba et al.
Journal of chromatography. A, 1423, 124-135 (2015-11-20)
Phenolic compounds seriously affect the sensory and nutritional qualities of food products, both through the positive contribution of wood transfer in barrel-aged products and as off-flavours. A new targeted analytical approach combining on-line solid-phase extraction (SPE) clean-up to reduce matrix
Xin Li et al.
Journal of environmental sciences (China), 32, 15-25 (2015-06-05)
Powdered activated carbon (PAC) adsorption of two fishy odorants, trans,trans-2,4-heptadienal (HDE) and trans,trans-2,4-decadienal (DDE), was investigated. Both the pseudo first-order and the pseudo second-order kinetic models well described the kinetics curves, and DDE was more readily removed by PAC. In
T Ashitani et al.
Experimental & applied acarology, 67(4), 595-606 (2015-09-20)
Hyptis suaveolens (Lamiaceae), a plant traditionally used as a mosquito repellent, has been investigated for repellent properties against nymphs of the tick Ixodes ricinus. Essential oils and volatile compounds of fresh and dried leaves, from plants originating from Laos and
Xinguang Zhou et al.
Journal of chromatography. A, 1409, 125-131 (2015-07-25)
Concentration of blood catecholamines (CAs) is linked to a host of cardiovascular diseases, including hypertension and stenocardia. The matrix interferences and low concentration require tedious sample pretreatment methods before quantitative analysis by the gold standard method of high-performance liquid chromatography-electrochemical
Katherine Booker et al.
Organic & biomolecular chemistry, 12(37), 7201-7210 (2014-06-28)
The selectivity and rebinding capacity of molecularly imprinted polymers selective for propranolol (1) using the room temperature ionic liquids [BMIM][BF4], [BMIM][PF6], [HMIM][PF6] and [OMIM][PF6] and CHCl3 were examined. The observed IF (imprinting factor) values for MIPBF4, MIPPF6 and MIPCHCl3 were
Gregor Strle et al.
Angewandte Chemie (International ed. in English), 54(34), 9917-9920 (2015-08-04)
A simple and efficient method allows the synthesis of solutions of high-purity hydrogen trioxide (HOOOH), released in the low-temperature methytrioxorhenium(VII) (MTO)-catalyzed transformation of the ozonized polystyrene-supported dimethylphenylsilane. High-purity hydrogen trioxide solutions in diethyl ether, separated from the polymer and free
Jinyan Gu et al.
Langmuir : the ACS journal of surfaces and colloids, 31(45), 12530-12536 (2015-10-29)
We present a facile strategy to prepare grape-like silica-based hierarchical porous interlocked microcapsules (HPIMs) by polystyrene colloidal crystals templates, whose structure is the subtle integration of open mouthed structure, hierarchical porous nanostructure and interlocked architecture. HPIMs are fabricated by replicating
Rongning Liang et al.
Scientific reports, 5, 12462-12462 (2015-07-29)
Ion-selective electrode (ISE) based potentiometric gas sensors have shown to be promising analytical tools for detection of chemical vapors. However, such sensors are only capable of detecting those vapors which can be converted into ionic species in solution. This paper
Ashley A Thomson et al.
Environmental monitoring and assessment, 187(8), 484-484 (2015-07-03)
Biosand filters in the Artibonite Valley of Haiti, the epicenter of the cholera epidemic that began in October 2010, were tested for total coliform and Vibrio cholerae removal efficiencies. While coliform are often used as an indicator organism for pathogenic
Juan Zheng et al.
Analytica chimica acta, 884, 44-51 (2015-06-16)
The monodisperse microporous carbon nanospheres (MMCNSs) were applied in solid phase microextraction for the first time. The MMCNSs-fiber was prepared by sol-gel technique and good repeatability and reproducibility were obtained, due to the excellent monodispersity of the MMCNSs. The sol-gel-MMCNSs
Magdalena Surma et al.
Ecotoxicology and environmental safety, 120, 436-444 (2015-07-06)
Perfluorooctanesulfonate (PFOS) and perfluorooctanoic acid (PFOA) are the main representatives of an rising class of persistent organic pollutants (POPs), perfluorochemicals (PFCs). In this study, determination of selected PFCs concentration in liver, brain, tail, adipose and peritoneum tissues of free-living European
Shidong Lv et al.
PloS one, 9(12), e116428-e116428 (2015-01-01)
The quality of tea is presently evaluated by the sensory assessment of professional tea tasters, however, this approach is both inconsistent and inaccurate. A more standardized and efficient method is urgently needed to objectively evaluate tea quality. In this study
Nathaly Reyes-Garcés et al.
Journal of chromatography. A, 1374, 40-49 (2014-12-03)
Simple, fast and efficient sample preparation approaches that allow high-throughput isolation of various compounds from complex matrices are highly desired in bioanalysis. Particularly sought are methods that can, without sacrificing time, easily remove matrix interferences capable of inducing ionization suppression/enhancement
Jean-Christophe Barbe et al.
Journal of agricultural and food chemistry, 62(48), 11620-11627 (2014-11-21)
This study focuses on an off-flavor in wines treated by an acidification technique involving ion-exchange resins. Applying reversed-phase HPLC on a C18 column to a contaminated wine extract resulted in 25 fractions in dilute alcohol medium, and only one, fraction
Roman Büttiker et al.
Chimia, 65(3), 182-186 (2011-05-03)
Molecularly imprinted polymer microspheres were immobilized within a polymer nanofiber membrane by electrospinning. Such membranes simplify the handling of functional microspheres and provide specific recognition capabilities for solid-phase extraction and filtration applications. In this study, microspheres were prepared by precipitation
Gema Pereira-Caro et al.
Free radical biology & medicine, 84, 206-214 (2015-03-25)
Orange juice (OJ) flavanones are bioactive polyphenols that are absorbed principally in the large intestine. Ingestion of probiotics has been associated with favorable changes in the colonic microflora. The present study examined the acute and chronic effects of orally administered
Maria De Angelis et al.
PloS one, 9(6), e99006-e99006 (2014-06-13)
This study aimed at investigating the fecal microbiota, and the fecal and urinary metabolome of non progressor (NP) and progressor (P) patients with immunoglobulin A nephropathy (IgAN). Three groups of volunteers were included in the study: (i) sixteen IgAN NP
Mariusz Dziadas et al.
Analytica chimica acta, 699(1), 66-72 (2011-06-28)
A comparison of SPE cartridges produced in authors laboratory containing silica modified by addition of three functional moieties with standard C-18 and SDVB cartridges was made in terms of their applicability for the isolation of flavor compounds. Compounds found in
Steven A Zdravkovic
Journal of pharmaceutical and biomedical analysis, 112, 126-138 (2015-05-16)
An extractable survey is one of several studies performed on a pharmaceutical storage/delivery system as part of the process of demonstrating that the system is suitable for its intended use. In this paper, a solid phase extraction method for the
Deiene Garcia et al.
Journal of chromatography. A, 1410, 164-172 (2015-08-11)
A molecularly imprinted polymer (MIP) based methodology is described here for the determination of compounds that belong to the 4-ethylphenol (4EP) metabolic pathway in red wines. To this end, two MIP materials have been developed: a 4EP MIP as a
Sung-Tong Chin et al.
Food chemistry, 185, 355-361 (2015-05-09)
Component coelution in chromatographic analysis complicates identification and attribution of individual odour-active volatile molecules in complex multi-component samples. An integrated system incorporating comprehensive two-dimensional gas chromatography (GC × GC) and multidimensional gas chromatography (MDGC), with flame ionisation, olfactometry and mass
Fuyou Du et al.
Analytical and bioanalytical chemistry, 407(20), 6071-6079 (2015-05-31)
High-internal-phase-emulsion polymers (polyHIPEs) show great promise as solid-phase-extraction (SPE) materials because of the tremendous porosity and highly interconnected framework afforded by the high-internal-phase-emulsion (HIPE) technique. In this work, polyHIPE monolithic columns as novel SPE materials were prepared and applied to
Yan Ma et al.
Journal of separation science, 38(14), 2517-2525 (2015-05-02)
A novel magnetic solid phase extraction coupled with high-performance liquid chromatography method was established to analyze polyaromatic hydrocarbons in environmental water samples. The extraction conditions, including the amount of extraction agent, extraction time, pH and the surface structure of the
Wenhui Lv et al.
Journal of colloid and interface science, 356(1), 16-23 (2011-02-02)
A straightforward approach to the synthesis of "clickable" thermoresponsive core cross-linked (CCL) nanoparticles was developed. This approach was based on reversible addition-fragmentation chain transfer (RAFT) radical cross-linking polymerization of styrene and divinylbenzene with azide-functionalized poly(N-isopropylacrylamide) (PNIPAM-N(3)) as macro chain transfer
Improved rate capability of lithium-ion batteries with Ag nanoparticles deposited onto silicon/carbon composite microspheres as an anode material.
Kwon E, et al.
Solid State Ionics, 237(4), 28-33 (2013)
Francisco Barahona et al.
Journal of chromatography. A, 1218(40), 7065-7070 (2011-08-23)
In this paper, a novel format for selective solid-phase extraction based on a molecularly imprinted polymer (MIP) is described. A small amount of MIP has been synthesized within the pores of commercial polyethylene (PE) frits and attached to its surface
Yingying Zhong et al.
Analytica chimica acta, 686(1-2), 1-8 (2011-01-18)
An ion chromatographic method with on-line sample pretreatment was developed for the trace analysis of seven common anions in concentrated matrices. The pretreatment column used in this study consisted of polystyrene-divinylbenzene (PS-DVB) and multi-walled carbon nanotubes (MWCNTs). It was too
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