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Showing 1 to 20 of 26 for “"4-nitrophenol"”.
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DELAYED EFFECTS OF SUB-LETHAL LAMPRICIDE, 3-TRIFLUOROMETHYL-4-NITROPHENOL (TFM), EXPOSURE ON THE METABOLIC PHYSIOLOGY OF JUVENILE LAKE STURGEON (<em>ACIPENSER FULVESCENS</em>)
<p>The lampricide 3-trifluoromethyl-4-nitrophenol (TFM) can be lethal to juvenile lake sturgeon (<em>Acipenser fulvescens)</em> at high concentrations used to control invasive sea lamprey (<em>Petromyzon marinus)</em>. Little is known about how TFM would affect juvenile lake sturgeon (age-0) at the …
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Synthesis and characterization of Carbon Quantum Dots, ZnO and Magnetic Nanoparticles. New Analytical Applications
… acetic acid, 5-HIAA), environmental (4-nitrophenol) and food (tannic acid) concern have been used as model analytes. Also, the functionalization of ZnO nanoparticles was addressed with the aim to use them as lubricant additives and as nanosensors. Firstly, the synthesis, …
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Characterisation of the sulfotransferases catalysing the sulfation of xenobiotics and steroids in bovine liver
… related differences in activity were observed. 4-nitrophenol liver, however no sex related differences in activity were observed. 4-nitrophenol is metabolised by several members of the SULT1 family in humans such as SULT1A1, SULT1B1 and SULT1C. 17ß-estradiol is a probe substrate for human SULT1E1. …
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Structure-property relationships and salt selection for functional organic materials
… previously unpublished organic complexes of 4-nitrophenol (NPOH or 4-nitrophenolate NPO) were prepared and had their crystal structures elucidated.;These were: 1S2R-(+)-methylephedrine-NPO, 2-amino-3-pyridinecarboxaldehyde -NPOH, 4-acetylpyridine-NPOH, 2-aminobenzylamine-NPO, …
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Electrochemical Synthesis of Silver Nanoparticles for Applications in Nitrate Detection, Catalysis and Antibacterial Activity
… are investigated using the reduction of 4-nitrophenol and the detection of nitrates. In addition, data are presented on the antibacterial activity of the silver nanoparticles. The silver nanoparticles were synthesized as colloidal particles protected with polyvinylpyrrolidone (PVP) with a …
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Composites of Spherical Polyelectrolyte Brushes and Nanoparticles – Synthesis, Characterization and Their Use in Catalysis
… detailed kinetic analysis of the reduction of 4-nitrophenol by sodium borohydride using gold and platinum nanoparticles immobilized on SPBs has been conducted. In analogy to the work on the oxidative decomposition of morin, a Langmuir-Hinshelwood model was used for the description of the reaction …
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The Application of a Reporter Group to α-Chymotrypsin
… reporter group reagent, 2-bromoacetamido-4-nitrophenol, was accomplished. This reagent has a moiety which is sensitive to the polarity of the environment and to pH, and which reports changes in its environment to an appropriate detector. It contains a second moiety which reacts with …
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Semiconductor nanostructures for device applications
… robust, reliable and reproducible 4-nitrophenol (4-NP) chemical sensor based on CuO nanocubes. The structural characterizations confirmed the nanocrystalline nature and monoclinic structure for as-synthesized nanocubes. The optical property of CuO nanocubes exhibits indirect and …
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Purification of uridine diphosphate glucuronyltransferase
… for three different substrates, bilirubin, 4-nitrophenol (PNP) and 7-hydroxy-4-methylcoumarin (HMC). For this last substrate, HMC, a new continuous fluorometric assay was developed. The purification fold and activity recovery, respectively, towards each substrate was as follows: bilirubin, 31 …
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Hydrogen Bonded Liquid Crystals from Fluorophenols and Alkoxystilbazoles
… as well as between stilbazoles and 3- and 4-nitrophenol. Nine X-ray crystallographic structures of the 4-octyoxy-4’-stilbazole complexed with fluorophenols were also obtained. Eight of the complexes crystallised in the space group, with a back-to-back dimer motif, while the complex of …
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Supramolecular Nanostructures as Support Materials for Gold Nanoparticle Catalysts
… Using the model reduction reaction of 4-nitrophenol, we demonstrate the catalytic activity and recyclability of this AuNP-CysAA catalyst.
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Síntesis de nanoestruturas metálicas de oro y plata a partir de precursores organometálicos: Propiedades plasmónicas y catalíticas
… gold-silver nanoparticles in the reduction of 4-nitrophenol. Hence, this work is divided into five chapters: The first chapter is focused on the synthesis and characterization of spherical bimetallic gold-silver nanoparticles constituted by an alloy of both metals and stabilized with …
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Synthesis and Properties of Chemically Modified Carbon Nanotubes
… excited ca. 330 nm, were capable of sensing 4-nitrophenol, 3-nitrophenol, 2-nitrophenol, 2-nitrosotoluene and 2,4-dinitrotoluene with a detection limit of ca. 10-8 M. The modified SWNTs were further characterised using FTIR, XPS, TGA-MS and optical microscopy.
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Acclimation of activated sludge to pentachlorophenol
… loads of pentachlorophenol as well as phenol, 4-nitrophenol, 2-chlorophenol, and 2,4,6-trichlorophenol. Gas chromatography analysis showed very little disappearance of PCP in the 1 mg PCP/L reactor; however, in the 15 mg PCP/L reactor, the penta concentration decreased to virtually zero for about …
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Variability in fecal microbial drug deglucuronidation
… (4-MUG) and 4-nitrophenol-β-D-glucuronide (PNPG). For isolates demonstrating deglucuronidation activity with these test compounds, further analysis was conducted using the glucuronides of indomethacin, telmisartan, paracetamol, and ezetimibe. Additionally, inter- …
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Self-assembling polymeric nanoparticles for enhanced intra-articular anti-inflammatory protein delivery
… compatibility and non-fouling behavior, a 4-nitrophenol group for efficient protein tethering, and cyclohexyl methacrylate, a hydrophobic monomer, for particle stability. We engineered the copolymer and tested it in both in vitro culture experiments and an in vivo model to evaluate protein …
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Two-Phase Partitioning System Using Elvax 40W Polymer for the Biodegradation of Aqueous Phenols
… concentrations of selected analytes; phenol, 4- nitrophenol and o-cresol in aqueous solutions. Studies were performed to determine the degree of partitioning using HPLC and UV-VIS. Kinetic studies were also performed and illustrated a first order dependence on the absorption of the phenols …
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Primary and secondary emissions from upland fires in Ireland
… mannosan, galactosan, 4-Nitrocatechol 4-NC, 4-Nitrophenol 4-NP and 4-Nitroguaiacol 4-NG). Emission factors of measured gases were as follows: CO: 42 g/kg (heather), 27 g/kg (moor grass) and 80 g/kg (gorse); CO2 1167 g/kg (heather), 1558 g/kg (moor grass) and 1442 g/kg (gorse); SO2: 1.38 g/kg …
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Chemical functionalization and modification of Au clusters
… has been studied for the reduction of 4-nitrophenol.
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CHEMICAL AND KINETIC STUDIES OF BACTERIAL TRANSPORT AND CHEMORECEPTOR PROTEINS
… with the chromophoric probe 2-chloromercuri-4-nitrophenol (MNP) at a single site, cysteine residue 64. The addition of L-arabinose to MNP-modified L-arabinose-binding protein causes an increase in the nitrophenol pK to approximately 8.0 and a blue shift in the wavelength of maximum absorbance …
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