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Showing 1-21 of 21 results for "112933" within Papers
Zetty Azalea Sutirman et al.
International journal of biological macromolecules, 133, 1260-1267 (2019-05-03)
Grafting of crosslinked chitosan with monomer, N-vinyl-2-pyrrolidone, has been carried out to investigate its adsorption capacity toward Orange G (OG) from aqueous solutions. The adsorption performance of modified chitosan (cts(x)-g-PNVP) was examined and compared with that of the unmodified chitosan.
Deia El-Hady et al.
Journal of pharmaceutical and biomedical analysis, 52(2), 232-241 (2010-01-19)
In order to achieve excellent precision in the estimation of binding constants by affinity capillary electrophoresis (ACE), electroosmotic flow (EOF) stability is the key parameter, especially when using proteins in binding assays. Appropriate rinsing protocols are mandatory. In our study
Wanying Li et al.
Mikrochimica acta, 187(6), 328-328 (2020-05-15)
Based on a detailed study of the hydrolysis process of tetrabutyl orthotitanate (TBOT), TiO2 nanoclusters were modified inside the pores of SiO2 core-shell particles instead of the outside. The pore size distribution of SiO2 core-shell spheres modified with TiO2 (SiO2@dSiO2@TiO2) was
Nicole Scheunemann et al.
Oecologia, 179(4), 1135-1145 (2015-08-13)
Soil food webs are driven by plant-derived carbon (C) entering the soil belowground as rhizodeposits or aboveground via leaf litter, with recent research pointing to a higher importance of the former for driving forest soil food webs. Using natural abundance
Khaled M Mohamed et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 997, 1-6 (2015-06-16)
In some developing countries, p-phenylenediamine (PPD) is used in combination with Henna as hair dye or skin decoration. A sensitive LC-MS/MS method was developed and validated for the simultaneous determination of p-phenylenediamine (PPD) and its metabolites N-acetyl-p-phenylenediamine (MAPPD) and N,N-diacetyl-p-phenylenediamine
Pedro Henrique Cavalcanti Franco et al.
Magnetic resonance in chemistry : MRC, 58(1), 97-105 (2019-08-24)
Quantitative nuclear magnetic resonance (qNMR) is an analytical technique that offers numerous advantages in pharmaceutical applications including minimum sample preparation and rapid data collection times with no need for response factor corrections, being a powerful tool for assaying drug content
Gea H van der Lee et al.
Ecology, 102(3), e03275-e03275 (2020-12-23)
Changes in the ecological stoichiometry of primary producers may have considerable implications for energy and matter transfer in food webs. We hypothesized that nutrient enrichment shifts the trophic position of omnivores towards herbivory, as the nutritional quality of primary producers
Michaela Blessing et al.
Rapid communications in mass spectrometry : RCM, 29(24), 2349-2360 (2015-11-14)
Compound-specific isotope analysis (CSIA) of persistent organic contaminants can be used for source apportioning in the environment if appropriate sensitivity can be achieved. This paper describes the optimization and validation of a sensitive analytical approach for the determination of the
Giulia Caron et al.
Journal of medicinal chemistry, 48(9), 3269-3279 (2005-04-29)
Growing interest in the use of both the logarithm of the partition coefficient of the neutral species in the alkane/water system (log P(N)(alk)) and the difference between log P(N)(oct) (the logarithm of the partition coefficient of the neutral species in
Yan Ma et al.
Journal of chromatography. A, 1383, 47-57 (2015-02-05)
Prototype small-size (1.0mm I.D., 5cm long) columns for reversed-phase HPLC were evaluated in relation to instrument requirements. The performance of three types of columns, monolithic silica and particulate silica (2μm, totally porous and 2.6μm, core-shell particles) was studied in the
Fabrice Gritti et al.
Journal of chromatography. A, 1355, 179-192 (2014-07-09)
The mass transfer mechanism in four prototype columns (2.1 and 3.0×50mm, 2.1 and 3.0×100mm) packed with 1.9μm fully porous Titan-C18 particles was investigated by using two previously reported home-made protocols. The first one was used to measure the eddy dispersion
Yanyan Li et al.
Journal of the American Society for Mass Spectrometry, 26(8), 1266-1273 (2015-05-08)
A new atmospheric pressure ionization method termed pyroelectricity-assisted infrared laser desorption ionization (PAI-LDI) was developed in this study. The pyroelectric material served as both sample target plate and enhancing ionization substrate, and an IR laser with wavelength of 1064 nm
Khaled M Mohamed et al.
Biomedical chromatography : BMC, 30(12), 1922-1927 (2016-05-25)
Cases of poisoning by p-phenylenediamine (PPD) are detected sporadically. Recently an article on the development and validation of an LC-MS/MS method for the detection of PPD and its metabolites, N-acetyl-p-phenylenediamine (MAPPD) and N,N-diacetyl-p-phenylenediamine (DAPPD) in blood was published. In the
Yinuo Wu et al.
Chemical communications (Cambridge, England), 49(7), 689-691 (2012-12-12)
A palladium-catalyzed cascade cross-coupling of acetanilide and toluene for the synthesis of ortho-acylacetanilide is described. Toluene derivatives can act as effective acyl precursors (upon sp(3)-C-H bond oxidation by a Pd/TBHP system) in the oxidative coupling between two C-H bonds. This
Hassan A Alhazmi et al.
Journal of pharmaceutical and biomedical analysis, 107, 311-317 (2015-02-02)
In this work, the behavior of several metal ions with different globular proteins was investigated by affinity capillary electrophoresis. Screening was conducted by applying a proper rinsing protocol developed by our group. The use of 0.1M EDTA in the rinsing
Nikola Vaňková et al.
Journal of chromatography. A, 1409, 152-158 (2015-07-29)
The effect of gradient steepness on the kinetic performance limits and peak compression effects has been assessed in gradient mode for the separation of phenol derivatives using columns packed with 2.6μm core-shell particles. The effect of mobile-phase velocity on peak
Thomas Hahne et al.
Journal of bioscience and bioengineering, 118(3), 311-314 (2014-04-04)
Human papillomavirus 6b L1 virus-like particles (VLPs) were successfully expressed using Bombyx mori nucleopolyhedrovirus (BmNPV) bacmid expression system and rapidly purified using size exclusion chromatography after ultracentrifugation procedure and characterized by capillary zone electrophoresis (CZE). The average capillary electrophoresis migration
Weiwei Qin et al.
Journal of chromatography. A, 1432, 84-91 (2016-01-21)
Metal-organic framework (MOF) MIL-100(Fe) with well-defined thickness was homogenously coated onto the outer surface of magnetic microparticles via a liquid-phase epitaxy method. The as-synthesized MIL-100(Fe) was used as stationary phase for high-performance liquid chromatography (HPLC) and separations of two groups
Filipe R Ceia et al.
Rapid communications in mass spectrometry : RCM, 29(24), 2328-2336 (2015-11-14)
The main limitation of isotopic tracking for inferring distribution is the lack of detailed reference maps of the isotopic landscape (i.e. isoscapes) in the marine environment. Here, we attempt to map the marine δ(13) C isoscape for the southwestern sector
Alfonso Pérez-Garrido et al.
Bioorganic & medicinal chemistry, 17(2), 896-904 (2008-12-06)
This paper reports a QSAR study for predicting the complexation of a large and heterogeneous variety of substances (233 organic compounds) with beta-cyclodextrins (beta-CDs). Several different theoretical molecular descriptors, calculated solely from the molecular structure of the compounds under investigation
Naoki Aizawa et al.
Neurourology and urodynamics, 34(4), 368-374 (2014-02-18)
We measured single-unit mechanosensitive afferent activities (SAAs) during reflexic, rhythmic bladder contractions (RBCs), and examined whether L-arginine, an NO substrate, and mirabegron, a β3-adrenoceptor agonist, and oxybutynin, an antimuscarinic agent, can affect the SAAs in such condition. Twenty-nine female Sprague-Dawley
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