20280-U

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An experimental design approach employing artificial neural networks for the determination of potential endocrine disruptors in food using matrix solid-phase dispersion.

Vasiliki I Boti et al.

Journal of chromatography. A, 1216(9), 1296-1304 (2009-01-16)

Matrix solid-phase dispersion (MSPD) as a sample preparation method for the determination of two potential endocrine disruptors, linuron and diuron and their common metabolites, 1-(3,4-dichlorophenyl)-3-methylurea (DCPMU), 1-(3,4-dichlorophenyl) urea (DCPU) and 3,4-dichloroaniline (3,4-DCA) in food commodities has been developed. The influence

Determination of cyclophosphamide and ifosfamide in sewage effluent by stable isotope-dilution liquid chromatography-tandem mass spectrometry.

N Llewellyn et al.

Journal of chromatography. A, 1218(47), 8519-8528 (2011-10-22)

A reliable and specific method was developed for the determination of the cytotoxic drugs cyclophosphamide and ifosfamide in sewage effluent. The most successful combination was found to be Strata-X solid-phase extraction followed by Florisil® clean-up with analysis by liquid chromatography-tandem

Preparation and in vitro evaluation of plasma-sprayed Mg(2)SiO(4) coating on titanium alloy.

Youtao Xie et al.

Acta biomaterialia, 5(6), 2331-2337 (2009-04-14)

In this paper, chemically synthesized Mg(2)SiO(4) (MS) powder was plasma-sprayed onto a titanium alloy substrate to evaluate its application potentials in biomedicine. The phase composition and surface morphology of the MS coating were analyzed. Results showed that the MS coating

Optimization of an aqueous tablet-coating process containing carboxymethylated Cassia fistula gum.

Parshu Ram Rai et al.

AAPS PharmSciTech, 13(2), 431-440 (2012-03-01)

The present investigation was aimed at developing and optimizing a simple aqueous tablet-coating formulation and its process. 5-Fluorouracil (5-FU) was used to ascertain the relative lipophilic/hydrophilic behavior of the coating system. Optimization was performed by evaluating the adhesive force strength

Microwave accelerated selective Soxhlet extraction for the determination of organophosphorus and carbamate pesticides in ginseng with gas chromatography/mass spectrometry.

Ting Zhou et al.

Analytical chemistry, 84(13), 5816-5822 (2012-06-13)

Microwave accelerated selective Soxhlet extraction (MA-SSE), a novel selective extraction technique, was investigated in this study. A Soxhlet extraction system containing a glass filter was designed as an extractor. During the procedure of MA-SSE, both the target analytes and the

Determination of organochlorine compounds in neuston from the Mediterranean.

N García-Flor et al.

Environmental technology, 29(12), 1275-1283 (2009-01-20)

A reliable analytical procedure was developed to determine trace levels of organochlorine compounds in neuston samples. Freeze-dried samples were extracted by sonication (3 x 15 ml cyclohexane, 15 min) followed by gel permeation chromatography (GPC) and gas chromatography electron capture

Determination of alkylphenols and 17beta-estradiol in fish homogenate. Extraction and clean-up strategies.

P Navarro et al.

Journal of chromatography. A, 1217(38), 5890-5895 (2010-08-17)

The determination of target analytes such as nonyl- and octylphenols and 17beta-estradiol in fish homogenate require of solid-liquid extraction step. In this work microwave-assisted extraction (MAE) and focused-ultrasound liquid extraction (FUSLE) were studied as two different alternatives for extraction of

Identification of a mixed microparticle by combined microspectroscopic techniques: a real forensic case study in the biopharmaceutical industry.

Xiaolin Cao et al.

Applied spectroscopy, 64(8), 895-900 (2010-08-20)

Identification of foreign microparticles in drug products is one of the first steps in evaluating the nature of particle contamination and its consequences for product quality. To characterize various foreign particles, we use spectral database search methods as well as

Occurrence and fate of organochlorinated pesticides and PAH in agricultural soils from the Ebro River basin.

Alain Hildebrandt et al.

Archives of environmental contamination and toxicology, 57(2), 247-255 (2008-12-05)

This study was aimed to assess the presence and fate of 22 organochlorinated pesticides (OCHs) and their degradation products and 16 Environmental Protection Agency-priority polycyclic aromatic hydrocarbons (PAHs) in soils of the Ebro River basin (NE Spain) during a 3-year

[Clinical strategies for prevention of drug-induced urinary calculi].

Yasuo Kohjimoto et al.

Clinical calcium, 21(10), 1457-1463 (2011-10-01)

Drug-induced urinary calculi, although they account for only 1-2% of urinary calculi, deserve consideration because most of them are preventable. In the drug-containing calculi resulting from the crystallization of a certain drug and its metabolites in the urine, stone analysis

Efficient and versatile fibrous adsorbent based on magnetic amphiphilic composites of chrysotile/carbon nanostructures for the removal of ethynilestradiol.

Ana Paula C Teixeira et al.

Journal of hazardous materials, 248-249, 295-302 (2013-02-13)

In this work, chrysotile was used as support to grow carbon nanotubes and nanofibers to produce fibrous amphiphilic magnetic nanostructured composites. Iron impregnated on the chrysotile surface at 1, 5 and 15 wt% was used as catalyst to grow carbon

Prevention of bone loss by Panax ginseng in a rat model of inflammation-induced bone loss.

U Avsar et al.

Cellular and molecular biology (Noisy-le-Grand, France), 59 Suppl, OL1835-OL1841 (2013-02-13)

This study evaluated the protective effect of Panax Ginseng (PG) on bone metabolism in an experimental ovariectomy (OVX) model of osteoporosis in which inflammation was induced by subcutaneous magnesium silicate. The groups were: sham control (Group1, SH), sham+inflammation (Group2, SHinf)

Determination of methanol and ethanol by gas chromatrography following air sampling onto florisil cartridges and their concentrations at urban sites in the three largest cities in Brazil.

P A de Paula Pereira et al.

Talanta, 49(2), 245-252 (2008-10-31)

A new sampling protocol was developed to determine methanol and ethanol in the gas phase, at low concentration levels, in urban atmospheres. The procedure involves collection of air samples (20.0-30.0 l) with three florisil cartridges connected in series, at a

Determination of fragrance allergens in indoor air by active sampling followed by ultrasound-assisted solvent extraction and gas chromatography-mass spectrometry.

J Pablo Lamas et al.

Journal of chromatography. A, 1217(12), 1882-1890 (2010-02-09)

Fragrances are ubiquitous pollutants in the environment, present in the most of household products, air fresheners, insecticides and cosmetics. Commercial perfumes may contain hundreds of individual fragrance chemicals. In addition to the widespread use and exposure to fragranced products, many

Acid-treated Florisil as an adsorbent for column chromatography

Carroll, K. K.

Journal of the American Oil Chemists' Society, 40, 413-419 (1963)

Evaluation of three chitin metal silicate co-precipitates as a potential multifunctional single excipient in tablet formulations.

Rana Al-Shaikh Hamid et al.

Marine drugs, 8(5), 1699-1715 (2010-06-19)

The performance of the novel chitin metal silicate (CMS) co-precipitates as a single multifunctional excipient in tablet formulation using direct compression and wet granulation methods is evaluated. The neutral, acidic, and basic drugs Spironolactone (SPL), ibuprofen (IBU) and metronidazole (MET)

The covalently bound flavin of Chromatium cytochrome c552. 1. Evidence for cysteine thiohemiacetal at the 8 alpha position.

W H Walker et al.

European journal of biochemistry, 48(2), 439-448 (1974-10-02)

Supramolecular dynamics of thalidomide and its derivatives in water-sediment system.

Imran Ali et al.

Chirality, 22(4), 416-424 (2009-07-21)

The contamination of drug residues, including chiral ones, is not acceptable in earth's ecosystem. The dynamicity of enantiomers of thalidomide and its derivatives (3-methyl thalidomide, 3-ethyl thalidomide, and 3-butyl thalidomide) was ascertained at supramolecular level in water-sediment system using solid

Relevance of 1,2,5,6,9,10-hexabromocyclododecane diastereomer structure on partitioning properties, column-retention and clean-up procedures.

Espen Mariussen et al.

Journal of chromatography. A, 1217(9), 1441-1446 (2010-01-19)

To optimize clean-up procedures for the analysis of alpha-, beta-, and gamma-hexabromocyclododecanes (HBCD) in environmental and biological extracts, their retention behavior on silica gel and florisil was investigated using diverse mobile-phase solvents and accounting for matrix effects. The beta-diastereomer, relative

Covalent immobilization of catalase onto spacer-arm attached modified florisil: characterization and application to batch and plug-flow type reactor systems.

Ozlem Alptekin et al.

Enzyme and microbial technology, 49(6-7), 547-554 (2011-12-07)

Catalase was covalently immobilized onto florisil via glutaraldehyde (GA) and glutaraldehyde+6-amino hexanoic acid (6-AHA) (as a spacer arm). Immobilizations of catalase onto modified supports were optimized to improve the efficiency of the overall immobilization procedures. The V(max) values of catalase

Sorbent trapping solid-phase microextraction of fragrance allergens in indoor air.

J Pablo Lamas et al.

Journal of chromatography. A, 1217(33), 5307-5316 (2010-07-14)

Exposure to fragrance substances is exponentially increasing in our daily life due to the enhanced use of scented products. Some fragrances are known to be important sensitizers, inhalation being an important exposure pathway in indoor environments. A simple and sensitive

Sorption behavior of florisil for the removal of antimony ions from aqueous solutions.

Lei Zhang et al.

Water science and technology : a journal of the International Association on Water Pollution Research, 63(10), 2114-2122 (2011-10-08)

Florisil was employed for the sorption of antimony ions from aqueous solutions. A detailed study of the process was performed by varying the sorption time, pH, and temperature. The sorption was found to be fast, equilibrium was reached within 15

Characterization of chitin-metal silicates as binding superdisintegrants.

Iyad Rashid et al.

Journal of pharmaceutical sciences, 98(12), 4887-4901 (2009-08-20)

When chitin is used in pharmaceutical formulations, processing of chitin with metal silicates is advantageous, from both an industrial and pharmaceutical perspective, compared to processing using silicon dioxide. Unlike the use of acidic and basic reagents for the industrial preparation

The Florisil^? catalyzed [1, 3]-sigmatropic shift of allyl phenyl ethers-An entryway into novel mycophenolic acid analogues.

Talamas, Francisco X., et al.

Tetrahedron Letters, 38, 4725-4728 (1997)

Rapid analytical method for the determination of pesticide residues in sunflower seeds based on focused microwave-assisted Soxhlet extraction prior to gas chromatography-tandem mass spectrometry.

R C Prados-Rosales et al.

Journal of chromatography. A, 993(1-2), 121-129 (2003-05-09)

A rapid analytical method for determination of organochlorine pesticide residues in sunflower seeds based on focused microwave-assisted Soxhlet extraction has been developed. The main factors affecting the extraction efficiency--namely microwave power, irradiation time, volume of extractant and number of cycles--were

Multiresidue analysis of 83 pesticides and 12 dioxin-like polychlorinated biphenyls in wine by gas chromatography-time-of-flight mass spectrometry.

Sangram H Patil et al.

Journal of chromatography. A, 1216(12), 2307-2319 (2009-02-14)

A multiresidue method is described for simultaneous estimation of 83 pesticides and 12 dioxin-like polychlorinated biphenyls (PCBs) in red and white wines. The samples (20mL wine, acidified with 20 mL 1% HCl) were extracted with 10 mL ethyl acetate (+20

Determination of atmospheric perfluorocarbon background concentrations of fL/L range at the western coastal area of Korea

Kim, HyeKyeong, et al.

Atmospheric Environment, 1, 4-4 (2002)

Infrared transmission and emission spectroscopic study of selected Chinese palygorskites.

Hongfei Cheng et al.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 83(1), 518-524 (2011-10-01)

Infrared transmission and emission spectroscopy were used to analyze the difference in structure and thermal behavior of two Chinese palygorskites. The position of the main bands identified in the infrared spectra of the palygorskites studied is similar for these two

An improved gas chromatographic method for the determination of perfluorocarbon tracers in the atmosphere

Lagomarsino, Raymond J.

Journal of Chromatographic Science, 34, 405-412 (1996)

The role of carnitine on ovariectomy and inflammation-induced osteoporosis in rats.

Ebru Orsal et al.

Experimental biology and medicine (Maywood, N.J.), 238(12), 1406-1412 (2013-10-18)

This study was carried out to assess the protective bone-sparing effect of carnitine with anti-inflammatory properties on chronic inflammation-induced bone loss in ovariectomised (OVX) rats. A total of 64 rats were divided into eight groups. Sixteen rats were sham-operated (SH)

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