Di-(2-ethylhexyl)phthalate (DEHP), the most commonly used plasticizer in flexible polyvinylchloride formulations, is a ubiquitous environmental contaminant. To date, no information exists on potential health hazards from exposure to DEHP and/or its main metabolite, mono-(2-ethylhexyl)phthalate (MEHP), high-risk conditions, such as pregnancy and during neonatal period. The aim of this study was evaluate prenatal MEHP possible biologic effects. We measured serum concentrations cord blood 84...

Nitric oxide plays a pivotal role in regulating vascular tone. Different studies show endothelial function is impaired during hyperglycemia. Dark chocolate increases flow-mediated dilation healthy and hypertensive subjects with without glucose intolerance; however, the effect of pretreatment dark on other responses to hyperglycemia has not been examined. Therefore, we aimed investigate effects flavanol-rich administration (1) wave reflections; (2) blood pressure, endothelin-1 oxidative...

Di(2-ethylhexyl)phthalate (DEHP), the most commonly used plasticizer, is a widespread ubiquitous environmental contaminant. The potential health hazards from exposure to DEHP and its main metabolite, mono(2-ethylhexyl)phthalate (MEHP), have been well documented. Exposure MEHP in humans at risk, such as pregnant women human fetuses, has not tested.Plasma concentrations were measured total of 24 consecutive mother-infant pairs by high performance liquid chromatography. Associations between...

The authors report on the realization of ordered arrays light-emitting conjugated polymer nanofibers by near-field electrospinning. fibers, made from poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene], have diameters a few hundreds nanometers and their emission peaked at 560 nm. observed blue-shift compared to reference films is attributed different packing in nanostructures. Optical confinement fibers also analyzed through self-waveguided emission. These results open interesting...

Novel polystyrene-based molecularly imprinted polymer nanofibers were synthesized through the electrospinning technique. The polymers prepared using a non-covalent approach and atrazine as template. For comparison, nonimprinted also synthesized. morphology of was characterized scanning electron microscopy. adsorption pesticides, atrazine, desisopropyl, atraton, carboxin, linuron, chlorpyrifos studied under equilibrium (batch) conditions. To describe capability polymers, Langmuir Freundlich...

In this work, pristine graphene oxide and its thermally reduced derivatives, rGO, were tested for the removal of triazines (atraton, prometryn, atrazine) from water. The reduction process was optimized by means design experiments (DOE) coupled with response surface methodology (RSM), relying on adsorption efficiency material. optimal conditions calculated at a temperature 110 °C maintained 24 h; mildest simplest protocol chosen, as it allows in-air heat treatment common laboratory oven. rGO...

N-doped TiO2 nanofibers were deposited by electrospinning onto silicon and then annealed in air. They have been analyzed secondary electron microscopy, X-ray diffraction, photoemission. After the thermal processes, fibers, having a diameter between 300 400 nm, contain small amount of nitrogen still show anatase crystalline structure. Different solutions annealing processes used to vary concentration phase. These successfully tested as photocatalytic devices for methylene blue degradation...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnnulation reactions with iron(III) chloride: oxidation of iminesRino Leardini, Daniele Nanni, Antonio Tundo, Giuseppe Zanardi, and Fabrizio RuggieriCite this: J. Org. Chem. 1992, 57, 6, 1842–1848Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pubs.acs.org/doi/10.1021/jo00032a043https://doi.org/10.1021/jo00032a043research-articleACS PublicationsRequest reuse...

In this paper, a multilayer artificial neural network is used to model simultaneously the effect of solute structure and eluent concentration profile on retention s-triazines in reversed-phase high-performance liquid chromatography under linear gradient elution. The data 24 triazines, including common herbicides their metabolites, are collected 13 different elution modes, covering following experimental domain: starting acetonitrile volume fraction ranging between 40 60% slope 0 1%...

Ultra-high performance liquid chromatography (UHPLC) coupled with diode array detection (DAD) was applied to improve separation and of mono- bis-glucosyl esters crocetin (crocins), the main red-colored constituents saffron (Crocus sativus L.), other polar components. Response surface methodology (RSM) used optimise chromatographic resolution on Kinetex C18 (Phenomenex) column taking into account combined effect temperature, eluent flow rate slope a linear concentration gradient. A...