89680

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Showing 1-30 of 318 results for "89680" within Papers

A hybrid biological process of indoor air treatment for toluene removal.

C Hort et al.

Journal of the Air & Waste Management Association (1995), 64(12), 1403-1409 (2015-01-08)

Bioprocesses, such as biofiltration, are commonly used to treat industrial effluents containing volatile organic compounds (VOCs) at low concentrations. Nevertheless, the use of biofiltration for indoor air pollution (IAP) treatment requires adjustments depending on specific indoor environments. Therefore, this study

The use of nucleic acid based stable isotope probing to identify the microorganisms responsible for anaerobic benzene and toluene biodegradation.

Alison M Cupples

Journal of microbiological methods, 85(2), 83-91 (2011-03-02)

The remediation of sites contaminated with gasoline has been limited by a lack of information on the microorganisms able to transform these chemicals under anaerobic conditions. To address this, researchers have recently adopted a molecular method, called stable isotope probing

Tang W and Eisenbrand G et al.

Chinese Drugs of Plant Origin: Chemistry, Pharmacology, and Use in Traditional and Modern Medicine (2013)

Graphene-derivatized silica as an efficient solid-phase extraction sorbent for pre-concentration of fluoroquinolones from water followed by liquid-chromatography fluorescence detection.

Andrea Speltini et al.

Journal of chromatography. A, 1379, 9-15 (2015-01-07)

This work presents a novel analytical method based on graphene for the determination of five widely used fluoroquinolones (FQs) in aqueous matrices. The procedure entails solid-phase extraction (SPE) on graphene-derivatized silica (200mg), followed by liquid chromatography with fluorescence detection. Monolayer

Isolation, chemical characterization, and free radical scavenging activity of phenolics from Triticum aestivum L. aerial parts.

Iwona Kowalska et al.

Journal of agricultural and food chemistry, 62(46), 11200-11208 (2014-10-31)

Fourteen phenolic compounds (flavonoids and phenolic acids) were isolated and 19 were identified in the aerial parts of Triticum aestivum L. The structures of these compounds were established on the basis of the data obtained by electrospray ionization-mass spectrometry (ESI-MS)

Dinitrotoluene exposure in the copper mining industry and renal cancer: a case-cohort study.

Andreas Seidler et al.

Occupational and environmental medicine, 71(4), 259-265 (2014-02-04)

To evaluate the association between dinitrotoluene (DNT) exposure and renal cancer in a case-cohort study. This case-cohort study was conducted among men born between 1920 and 1974 (n=16 441) who were gainfully employed between 1953 and 1990 in one of

Charge-transfer solids using nucleobases: supramolecular architectures composed of cytosine and [Ni(dmit)2] assembled by multiple hydrogen bonds and heteroatomic contacts.

Yukihiro Yoshida et al.

Chemistry (Weinheim an der Bergstrasse, Germany), 19(37), 12325-12335 (2013-07-31)

Protonated species of the nucleobase cytosine (C), namely the monoprotonated CH(+) and the hemiprotonated CHC(+), were used to obtain four charge-transfer complexes of [Ni(dmit)2] (dmit: 1,3-dithiole-2-thione-4,5-dithiolate). Diffusion methods afforded two semiconducting [Ni(dmit)2](-) salts; (CH)[Ni(dmit)2](CH3CN) (1) and (CHC)[Ni(dmit)2] (2). In salt

Versatile ene-thiol photoclick reaction for preparation of multimodal monolithic silica capillary columns.

A Marechal et al.

Journal of chromatography. A, 1365, 140-147 (2014-09-25)

This paper presents a photografting process of monolithic silica capillary columns based on the ene-thiol click chemistry. This study is performed on a "generic" vinyl-functionalized silica monolith (Hmin 6±1μm). The photoclick reaction is investigated using different thiol monomers (octadecanethiol, cysteine

Evaluation of the sensitivity, responsiveness and reproducibility of primary rainbow trout hepatocyte vitellogenin expression as a screening assay for estrogen mimics.

Maria T Hultman et al.

Aquatic toxicology (Amsterdam, Netherlands), 159, 233-244 (2015-01-07)

Vitellogenin (Vtg) induction in primary fish hepatocytes has been proposed as an in vitro screening assay for ER agonists and antagonists, but has not yet been used extensively as a high-throughput screening tool due to poor reproducibility, sensitivity and overall

Dual core quantum dots for highly quantitative ratiometric detection of trypsin activity in cystic fibrosis patients.

Iván Castelló Serrano et al.

Nanoscale, 6(22), 13623-13629 (2014-10-03)

We present herein two colour encoded silica nanospheres (2nanoSi) for the fluorescence quantitative ratiometric determination of trypsin in humans. Current detection methods for cystic fibrosis diagnosis are slow, costly and suffer from false positives. The 2nanoSi proved to be a

Two-phase hollow fiber liquid phase microextraction based on magnetofluid for simultaneous determination of Echinacoside, Tubuloside B, Acteoside and Isoacteoside in rat plasma after oral administration of Cistanche salsa extract by high performance liquid chromatography.

Jun Zhou et al.

Journal of pharmaceutical and biomedical analysis, 94, 30-35 (2014-02-18)

A new and fast sample preparation technique based on two-phase hollow fiber liquid phase microextraction (HF-LPME) with magnetofluid was developed to quantitate and determine the four phenylethanoid glycosides (PhGs) (Echinacoside, Tubuloside B, Acteoside and Isoacteoside) in plasma after oral administration

Effect of monomer dosing rate in the preparation of mesoporous polystyrene nanoparticles by semicontinuous heterophase polymerization.

Dalia Y Sosa et al.

Molecules (Basel, Switzerland), 20(1), 52-69 (2014-12-30)

The semicontinuous heterophase polymerization of styrene in the presence of cross-linking and porogen agents was carried out. Latexes with close to 20% solid content, which contained mesoporous nanoparticles with 28 nm in average diameters, up to 0.5 cm3/g in porosity

[Occupational exposure-associated hematological and immunologic manifestations to the benzene-toluene-xylene (Btx) mixture].

Luis Cuauhtémoc Haro-García et al.

Revista medica del Instituto Mexicano del Seguro Social, 46(6), 643-650 (2009-03-07)

Despite, the idea promoted to study occupational exposure to benzene and its mixture with toluene and xylene (BTX) because it appears to determine its toxicity and probably the production of additive effects, it persists interest to recognizing its hematological and

Estimation of enantiomeric impurity in piperidin-3-amine by chiral HPLC with precolumn derivatization.

Chittabathina Venkata Raghunadha Babu et al.

Chirality, 26(12), 775-779 (2014-07-22)

A simple, precise, accurate, robust chiral high-performance liquid chromatographic (chiral HPLC) method was developed for estimation of (S)-piperidin-3-amine (S-isomer) in (R)-piperidin-3-amine dihydrochloride (R-AMP). As AMP is a high-melting solid and nonchromophoric compound, development of a suitable chiral method is a

Anti-HBV activity of the different extracts from Phyllanthus rheedei Wight in cell culture based assay systems.

V Suresh et al.

Journal of ethnopharmacology, 156, 309-315 (2014-09-16)

Phyllanthusrheedei Wight is a plant used by Muthuvan tribes of Kerala for treating liver related diseases. The different extracts of Phyllanthus rheedei were analysed on cell lines were viz, PLC/PRF, Hep3B, FLCII10 and HepG2215 for its anti-HBV property. The analysis

Joint action and lethal levels of toluene, ethylbenzene, and xylene on midge (Chironomus plumosus) larvae.

Xuefeng Li et al.

Environmental science and pollution research international, 20(2), 957-966 (2013-01-29)

Aquatic ecosystems are vulnerable to the exposure with petrochemicals such as toluene, ethylbenzene, and xylene (o-, m-, and p-xylene) (TEX) and their adverse effects. Considering the widespread use, occurrence, and high toxicity of TEX, the aim of this work was

Molecular rearrangement reactions in the gas phase triggered by electron attachment.

Benedikt Omarsson et al.

Physical chemistry chemical physics : PCCP, 15(13), 4754-4766 (2013-02-26)

Bond formation and rearrangement reactions in gas phase electron attachment were studied through dissociative electron attachment (DEA) to pentafluorotoluene (PFT), pentafluoroaniline (PFA) and pentafluorophenol (PFP) in the energy range 0-14 eV. In the case of PFA and PFP, the dominant

Dip-pen patterning of poly(9,9-dioctylfluorene) chain-conformation-based nano-photonic elements.

Aleksandr Perevedentsev et al.

Nature communications, 6, 5977-5977 (2015-01-20)

Metamaterials are a promising new class of materials, in which sub-wavelength physical structures, rather than variations in chemical composition, can be used to modify the nature of their interaction with electromagnetic radiation. Here we show that a metamaterials approach, using

BTEX pollution caused by motorcycles in the megacity of HoChiMinh.

Tran Thi Ngoc Lan et al.

Journal of environmental sciences (China), 25(2), 348-356 (2013-04-20)

Monitoring of benzene, toluene and xylenes (BTEX) was conducted along with traffic counts at 17 roadside sites in urban areas of HoChiMinh. Toluene was the most abundant substance, followed by p,m-xylenes, benzene, o-xylene and ethylbenzene. The maximum observed hour-average benzene

Controlling the size of hot injection made nanocrystals by manipulating the diffusion coefficient of the solute.

Kim De Nolf et al.

Journal of the American Chemical Society, 137(7), 2495-2505 (2015-01-30)

We investigate the relation between the chain length of ligands used and the size of the nanocrystals formed in the hot injection synthesis. With two different CdSe nanocrystal syntheses, we consistently find that longer chain carboxylic acids result in smaller

Preparation and evaluation of benzyl methacrylate monoliths for capillary chromatography.

Ahmad Aqel et al.

Journal of chromatographic science, 52(3), 201-210 (2013-02-21)

This paper describes the comprehensive fabrication of monolithic materials for use as stationary phases in capillary liquid chromatography. Several columns were synthesized in the confines of 320 µm i.d. fused-silica capillaries by single-step in situ copolymerization of benzyl methacrylate and

Detection of benz[j]aceanthrylene in urban air and evaluation of its genotoxic potential.

Hwanmi Lim et al.

Environmental science & technology, 49(5), 3101-3109 (2015-01-28)

Benz[j]aceanthrylene (B[j]A) is a cyclopenta-fused polycyclic aromatic hydrocarbon with strong mutagenic and carcinogenic effects. We have identified B[j]A in air particulate matter (PM) in samples collected in Stockholm, Sweden and in Limeira, Brazil using LC-GC/MS analysis. Determined concentrations ranged between

Effect of nanovaccine chemistry on humoral immune response kinetics and maturation.

Shannon L Haughney et al.

Nanoscale, 6(22), 13770-13778 (2014-10-07)

Acute respiratory infections represent a significant portion of global morbidity and mortality annually. There is a critical need for efficacious vaccines against respiratory pathogens. To vaccinate against respiratory disease, pulmonary delivery is an attractive route because it mimics the route

Neurotoxicity of toluene.

Tin-Tin Win-Shwe et al.

Toxicology letters, 198(2), 93-99 (2010-07-06)

Chemical susceptibility is triggered by a large range of chemicals present both indoors and outdoors including pesticides, cleaning products, perfumes, scented products and cigarette smoke. Health risk after chemical exposure depends on age, sex, genetic factors, socioeconomic status, nutritional status

Cr(VI) transport via a supported ionic liquid membrane containing CYPHOS IL101 as carrier: system analysis and optimization through experimental design strategies.

Eduardo Rodríguez de San Miguel et al.

Journal of hazardous materials, 273, 253-262 (2014-04-23)

Chromium(VI) transport through a supported liquid membrane (SLM) system containing the commercial ionic liquid CYPHOS IL101 as carrier was studied. A reducing stripping phase was used as a mean to increase recovery and to simultaneously transform Cr(VI) into a less

Transformation of toluene and benzene by mixed methanogenic cultures

Grbic-galic and Vogel.MT

Applied and Environmental Microbiology, 53(2), 254-260 (1987)

QSAR study and synthesis of new phenyltropanes as ligands of the dopamine transporter (DAT).

Sylvie Mavel et al.

Bioorganic & medicinal chemistry, 20(4), 1388-1395 (2012-02-04)

The dopamine transporter (DAT) plays a pivotal role in the regulation of dopamine neurotransmission, and is involved in a number of physiological functions and brain disorders. Furthermore the DAT analysis by molecular imaging techniques is a useful tool for the

Analysis of the polymorph changes of a drug candidate.

P Láng et al.

Journal of pharmaceutical and biomedical analysis, 102, 229-235 (2014-10-12)

The effects of solvents, temperature and humidity on the stability of a former drug candidate obtained from Sanofi (Hungary) were examined by a slurry equilibration method, variable temperature and humidity X-ray powder diffractometry (VT/VH-XRPD) and differential scanning calorimetry (DSC). The

Comprehensive characterization of the halogenated dibenzo-p-dioxin and dibenzofuran contents of residential fire debris using comprehensive two-dimensional gas chromatography coupled to time of flight mass spectrometry.

Kari L Organtini et al.

Journal of chromatography. A, 1369, 138-146 (2014-12-03)

A comprehensive approach was taken to characterize the polyhalogenated dibenzo-p-dioxin and dibenzofuran contents of fire debris. Household and electronics fire simulations were performed to create samples representative of those firefighters most typically come in contact with. Sample analysis was performed

In vitro evaluation of transdermal patches of flurbiprofen with ethyl cellulose.

Arfat Idrees et al.

Acta poloniae pharmaceutica, 71(2), 287-295 (2014-10-03)

This study was aimed to determine effects of penetration enhancers and plasticizers on drug release from rationally designed formulations of flurbiprofen based transdermal drug delivery system. Matrix type transdermal patches were formulated with ethyl cellulose (EC) as a polymer by

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