Keyword search (3,448 papers available)


Partial purification, kinetic analysis, and amino acid sequence information of a flavonol 3-O-methyltransferase from Serratula tinctoria.

Author(s): Huang TS, Anzellotti D, Dedaldechamp F, Ibrahim RK

Plant Physiol. 2004 Apr;134(4):1366-76 Authors: Huang TS, Anzellotti D, Dedaldechamp F, Ibrahim RK

Article GUID: 15084728
Effects of surfactants on rhizodegradation of oil in a contaminated soil.

Author(s): Memarian R, Ramamurthy AS

J Environ Sci Health A Tox Hazard Subst Environ Eng. 2012;47(10):1486-90 Authors: Memarian R, Ramamurthy AS

Article GUID: 22571537
Enzymatic assay for GHB determination in forensic matrices.

Author(s): Grenier V, Huppé G, Lamarche M, Mireault P

J Anal Toxicol. 2012 Sep;36(7):523-8 Authors: Grenier V, Huppé G, Lamarche M, Mireault P

Article GUID: 22722059
Odorous gaseous emissions as influence by process condition for the forced aeration composting of pig slaughterhouse sludge.

Author(s): Blazy V, de Guardia A, Benoist JC, Daumoin M, Lemasle M, Wolbert D, Barrington S

Waste Manag. 2014 Jul;34(7):1125-38 Authors: Blazy V, de Guardia A, Benoist JC, Daumoin M, Lemasle M, Wolbert D, Barrington S

Article GUID: 24768513
Development of a particle-trap preconcentration-soft ionization mass spectrometric technique for the quantification of mercury halides in air

Author(s): Deeds DA; Ghoshdastidar A; Raofie F; Guérette ÉA; Tessier A; Ariya PA;

Measurement of oxidized mercury, Hg(II), in the atmosphere poses a significant analytical challenge as Hg(II) is present at ultra-trace concentrations (picograms per cubic meter air). Current technologies are sufficiently sensitive to measure the total Hg p...

Article GUID: 25837315
Lithocholic bile acid accumulated in yeast mitochondria orchestrates a development of an anti-aging cellular pattern by causing age-related changes in cellular proteome.

Author(s): Beach A, Richard VR, Bourque S, Boukh-Viner T, Kyryakov P, Gomez-Perez A, Arlia-Ciommo A, Feldman R, Leonov A, Piano A, Svistkova V, Titorenko VI

Cell Cycle. 2015;14(11):1643-56 Authors: Beach A, Richard VR, Bourque S, Boukh-Viner T, Kyryakov P, Gomez-Perez A, Arlia-Ciommo A, Feldman R, Leonov A, Piano A, Svistkova V, Titorenko VI

Article GUID: 25839782
Electrochemical efficacy of a carboxylated multiwalled carbon nanotube filter for the removal of ibuprofen from aqueous solutions under acidic conditions.

Author(s): Bakr AR, Rahaman MS

Chemosphere. 2016 Jun;153:508-20 Authors: Bakr AR, Rahaman MS

Article GUID: 27035389
On-chip integration of droplet microfluidics and nanostructure-initiator mass spectrometry for enzyme screening

Author(s): Joshua Heinemann

Biological assays often require expensive reagents and tedious manipulations. These shortcomings can be overcome using digitally operated microfluidic devices that require reduced sample volumes to automate assays. One particular challenge is integrating bi...

Article GUID: 27957569
Varying the rate of intravenous cocaine infusion influences the temporal dynamics of both drug and dopamine concentrations in the striatum

Author(s): Minogianis EA; Shams WM; Mabrouk OS; Wong JT; Brake WG; Kennedy RT; du Souich P; Samaha AN;...

The faster drugs of abuse reach the brain, the greater is the risk of addiction. Even small differences in the rate of drug delivery can influence outcome. Infusing cocaine intravenously over 5 vs....

Article GUID: 29757478
Title:Electrochemical efficacy of a carboxylated multiwalled carbon nanotube filter for the removal of ibuprofen from aqueous solutions under acidic conditions.
Authors:Bakr AR,  Rahaman MS
Link:https://www.ncbi.nlm.nih.gov/pubmed/27035389?dopt=Abstract
DOI:10.1016/j.chemosphere.2016.03.078
Category:Chemosphere
PMID:27035389
Dept Affiliation: MASSSPEC
1 Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec, H3G 1M8, Canada.
2 Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec, H3G 1M8, Canada. Electronic address: saifur.rahaman@concordia.ca.

Description:

Electrochemical efficacy of a carboxylated multiwalled carbon nanotube filter for the removal of ibuprofen from aqueous solutions under acidic conditions.

Chemosphere. 2016 Jun;153:508-20

Authors: Bakr AR, Rahaman MS

Abstract

This study provides insight into the efficiency of a functionalized multiwalled carbon nanotube filter for the removal of an anti-inflammatory drug, ibuprofen, through conventional filtration and electrochemical filtration processes. A comparison was made between carboxylated multiwalled carbon nanotubes (MWNTs-COOH) and pristine multiwalled carbon nanotubes (MWNTs) in order to emphasize the enhanced performance of MWNTs-COOH for the removal of ibuprofen using an electrochemical filtration process under acidic conditions. Ibuprofen-removal trials were evaluated based on absorbance values obtained using a UV/Vis spectrophotometer, and possible degradation products were identified using liquid chromatography mass spectrometry (LC-MS). The results exhibited near complete removal of ibuprofen by MWNTs-COOH at lower applied potentials (2 V), at lower flow rates, and under acidic conditions, which can be attributed to the generation of superoxides and their active participation in simultaneous degradation of ibuprofen, and its by-products, under these conditions. At higher applied potential (3 V), the possible participation of both bulk indirect oxidation reactions, and direct electron transfer were hypothesized for the removal behavior over time (breakthrough). At 3 V under acidic conditions, near 100% removal of the target molecule was achieved and was attributed to the enhanced generation of electroactive species toward bulk chemical reactions and a possible contribution from direct electron transfer under these conditions. The degradation by-products of ibuprofen were effectively removed by allowing longer residence time during the filtration process. Moreover, the effect of temperature was studied, yet showed a non-significant effect on the overall removal process.

PMID: 27035389 [PubMed - indexed for MEDLINE]