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Showing 1-30 of 31 results for "PHR1200" within Papers
Stéphanie Romand et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 63, 14-21 (2014-07-06)
A capillary isoelectric focusing (cIEF) method was developed for the determination of the ionization constants (pKa) of small molecules. Two approaches used to decrease the electroosmotic flow (EOF) were compared: (i) a hydroxypropylcellulose (HPC) coated capillary in aqueous medium and
Roongnapa Tongarun et al.
Current microbiology, 56(2), 182-188 (2007-11-15)
Bioremediation treatments including natural attenuation (NA), biostimulation (BS), and bioaugmentation (BA) were performed and compared regarding the degradation of 4-chloroaniline (4CA) contaminating two types of agricultural soil collected from Nakornnayok (NN) and Chiangmai (CM) provinces, Thailand. Despite the different soil
Kun Yang et al.
Environmental science & technology, 42(21), 7931-7936 (2008-11-27)
Aqueous adsorption of a series of phenols and anilines by a multiwalled carbon nanotube material (MWCNT15), which depends strongly on the solution pH and the number and types of solute groups, was investigated in this study. The pH-dependent adsorption coefficients
HPLC determination of chlorhexidine gluconate and p-chloroaniline in topical ointment
Havlikova L, et al.
Journal of Pharmaceutical and Biomedical Analysis, 43(3), 1169-1173 (2007)
Nathalie Dom et al.
Chemosphere, 81(2), 177-186 (2010-07-20)
Aquatic toxicity information is essential in environmental risk assessment to determine the potential hazards and risks of new and existing chemicals. Prediction and modelling techniques, such as quantitative structure activity relationships (QSAR) and species sensitivity distributions (SSDs), are applied to
Sylwia Smuczyńska et al.
The Journal of chemical physics, 130(12), 124316-124316 (2009-04-02)
Negatively charged p-chloroaniline (PCA) was studied using ab initio coupled-cluster CCSD(T) method with the aug-cc-pVDZ+5s4p3d basis sets. It was found that the PCA forms a stable (although weakly bound) anionic state whose electron binding energy is 81 cm(-1). The analysis
M Bader et al.
Toxicology letters, 231(3), 328-336 (2014-10-08)
Human biomonitoring (HBM) is frequently used for the analysis and assessment of exposure to chemicals under routine working conditions. In recent years, HBM has also been applied to monitor the exposure of the general population, and of emergency responders in
A Subashini et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 82(1), 91-96 (2011-08-02)
The organic material 4-chloro-4'-chlorobenzylidene aniline (CCBA) was synthesized and confirmed by NMR and FTIR spectral analyses. CCBA crystal was grown from chloroform by slow evaporation at room temperature and the single crystal cell parameters were determined by single crystal X-ray
Liang Zhu et al.
Bioresource technology, 107, 46-54 (2012-01-11)
Because of the important role of extracellular polymeric substances (EPS) in microbial aggregates, the relationship of the EPS and physico-chemical properties of aerobic granule was studied in two sequencing airlift bioreactors (SABR) using two kinds of substrates, acetate+glucose and 4-chloroaniline
Luiz Eduardo Barbin et al.
Journal of endodontics, 34(12), 1508-1514 (2008-11-26)
The aim of this study was to determine whether para-chloroaniline (PCA) and/or reactive oxygen species (ROS) are generated by chlorhexidine (CHX) alone or after CHX is mixed with calcium hydroxide at different time points. Mass spectrometry was performed to detect
Cheng Ding et al.
Bulletin of environmental contamination and toxicology, 86(4), 454-459 (2011-03-02)
A bacterium (strain ycsd02) was isolated from rhizosphere soil in phragmites wetland using the enrichment culture contaminated with p-Chloroaniline (p-CA). Morphology, physio-biochemical characteristics and phylogenetic analysis based on 16S rDNA sequence indicated that the shape of the single cell is
Zhixin Zong et al.
Journal of pharmaceutical sciences, 101(7), 2417-2427 (2012-04-14)
The objectives of the studies presented herein were to determine the pH-dependent chlorhexidine (CHD) degradation scheme, to determine the rate laws, and to propose reasonable mechanisms for CHD hydrolysis in aqueous solutions. A series of degradation kinetic studies was conducted
John E Thomas et al.
Journal of endodontics, 36(2), 315-317 (2010-02-02)
The purpose of this in vitro study was to determine whether para-chloroaniline (PCA) is formed through the reaction of mixing sodium hypochlorite (NaOCl) and chlorhexidine (CHX). Initially, commercially available samples of chlorhexidine acetate (CHXa) and PCA were analyzed with 1H
Pankaj V Dixit et al.
Behavioural pharmacology, 23(7), 716-721 (2012-08-15)
Berberine, an isoquinoline alkaloid, is being extensively explored in several clinical trials for the treatment of metabolic disorder and cancer. It is also reported to be a potent inhibitor of prolyl oligopeptidase, which makes it a potential candidate for the
Kun Yang et al.
Environmental science & technology, 44(8), 3021-3027 (2010-03-06)
Competitive adsorption between nonpolar organic compounds and polar ionic organic compounds (IOCs) on carbon nanotubes (CNTs) is essential for application of CNTs as superior sorbents and for environmental risk assessment of both CNTs and organic contaminants. It was observed in
Jeong-Wook Kwon et al.
Environmental toxicology and chemistry, 31(2), 262-269 (2011-11-23)
The leaching and transformation behaviors of triclosan (TCS) and triclocarban (TCC) in soil columns (20 cm high, 4 cm in diameter) packed with an agricultural soil (Roxana very fine sandy loam) with and without biosolids surface application were investigated. The
D Mortenson et al.
International endodontic journal, 45(9), 878-882 (2012-04-11)
To determine if the formation of para-chloroaniline (PCA) can be avoided by using an alternative irrigant following sodium hypochlorite but before chlorhexidine. Fifty-five single-rooted teeth were decoronated, instrumented to size 40, .06 taper whilst being irrigated with 14% ethylene-diamine-tetra-acetic acid
Ayman M Atta et al.
Molecules (Basel, Switzerland), 19(5), 6246-6262 (2014-05-21)
A facile method was developed to synthesize in high yield dispersed silver nanoparticles (AgNPs) with small particle sizes of less than 10 nm. Silver nitrate was reduced to silver nanoparticles by p-chloroaniline in the presence of polyoxyethylene maleate 4-nonyl-2-propylene-phenol (NMA)
Preparation and evaluation of lidocaine hydrochloride in cyclodextrin inclusion complexes for development of stable gel in association with chlorhexidine gluconate for urogenital use
da Silva LFJS, et al.
International journal of nanomedicine, 6(3), 1143-1143 (2011)
Fabio Gosetti et al.
Environmental pollution (Barking, Essex : 1987), 158(2), 592-598 (2009-09-22)
This paper studies the degradation reactions that 4-chloroaniline can naturally undergo in waters for the action of sun light. 10.00 mg L(-1) 4-chloroaniline aqueous solution, without any addition of organic solvent, are undergone to photoirradiation under conditions that simulate sun
Hyeon-Sik Kim et al.
Journal of endodontics, 38(1), 112-116 (2011-12-14)
Recent studies have reported the color change and formation of precipitates containing para-chloroaniline (PCA) after a reaction of sodium hypochlorite (NaOCl) and chlorhexidine (CHX). Alexidine (ALX), a biguanide disinfectant similar to CHX, has greater affinity for bacterial virulence factors than
Bettina R Basrani et al.
Journal of endodontics, 33(8), 966-969 (2007-09-20)
The combination of sodium hypochlorite (NaOCl) and chlorhexidine (CHX) results in the formation of a precipitate. The aim of this study was to determine the minimum concentration of NaOCl required to form a precipitate with 2.0% CHX. This was accomplished
Li-li Zhang et al.
Journal of hazardous materials, 179(1-3), 875-882 (2010-04-27)
A new strain Delftia tsuruhatensis H1 able to degrade several chloroanilines (CAs) as individual compounds or a mixture was isolated from a CA-degrading mixed bacterial culture. The isolated strain could completely degrade 3-CA and 4-CA as growth substrates, while concurrently
Fernando Cárdenas-Lizana et al.
ChemSusChem, 1(3), 215-221 (2008-07-09)
The gas-phase continuous hydrogenation of p-chloronitrobenzene (p-CNB) over 1 mol% Au/TiO2 and Au/Al2O3 was compared for the first time. Both catalysts exhibit 100% selectivity in terms of -NO2 group reduction, resulting in the sole formation of p-chloroaniline (p-CAN). Au/TiO2 exhibited
Brian J Rasimick et al.
Journal of endodontics, 34(12), 1521-1523 (2008-11-26)
The combination of chlorhexidine and EDTA produces a white precipitate. The aim of this study was to determine if the precipitate involves the chemical degradation of chlorhexidine. The precipitate was produced and redissolved in a known amount of dilute trifluoroacetic
Shashikala Krishnamurthy et al.
Journal of endodontics, 36(7), 1154-1157 (2010-07-16)
The purpose of this study was (1) to evaluate maximum thickness the and chemical composition of the precipitate formed between sodium hypochlorite (NaOCl) and chlorhexidine (CHX) and (2) to evaluate effectiveness of absolute alcohol to remove residual NaOCl and thereby
Bettina R Basrani et al.
Journal of endodontics, 36(2), 312-314 (2010-02-02)
The combination of sodium hypochlorite (NaOCl) and chlorhexidine (CHX) results in the formation of a precipitate. In a previous study, we demonstrated the formation of 4-chloroaniline (PCA) in the precipitate by using x-ray photon spectroscopy (XPS) and time of flight
Fang Wang et al.
Chemical communications (Cambridge, England), (17)(17), 2040-2042 (2008-06-10)
Chemoselective hydrogenation of para-chloronitrobenzene without any dechlorination over Pt/gamma-ZrP catalyst proceeds effectively, which provides a clean and convenient approach to produce useful para-chloroaniline with excellent activity and selectivity.
Liang Zhu et al.
Applied microbiology and biotechnology, 79(5), 867-874 (2008-05-02)
The formation and characterization of the aerobic 4-chloroaniline-degrading granules in the three column-type sequencing batch reactors were investigated in this paper. The granular sludge was observed since 15 days after start-up in R2 and R3 which had the high ratio
Anthony F Pizon et al.
Clinical toxicology (Philadelphia, Pa.), 47(2), 132-136 (2008-07-09)
p-Chloroaniline is more potent at producing methemoglobin than aniline in animal models. This case highlights the clinical presentation of an inhalation exposure to p-chloroaniline and associated laboratory analysis. An in-vitro study evaluating the metabolism of p-chloroaniline in human hepatocytes was
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