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Showing 1-30 of 39 results for "185566" within Papers
Riccardo Salvio et al.
The Journal of organic chemistry, 76(13), 5438-5443 (2011-05-27)
Artificial phosphodiesterases that combine a guanidinium unit with a general base connected by a m-xylylene linker catalyze the transesterification of the RNA model compound 2-hydroxypropyl p-nitrophenyl phosphate (HPNP). The bifunctional catalysts presented in this work show varying extents of cooperation
Aitor de Las Heras et al.
PLoS genetics, 8(10), e1002963-e1002963 (2012-10-17)
Prokaryotic transcription factors (TFs) that bind small xenobiotic molecules (e.g., TFs that drive genes that respond to environmental pollutants) often display a promiscuous effector profile for analogs of the bona fide chemical signals. XylR, the master TF for expression of
Rafael Silva-Rocha et al.
Molecular microbiology, 86(1), 199-211 (2012-08-01)
The expression dynamics of the catabolic promoters of the TOL plasmid pWW0 has been examined in single cells of Pseudomonas putida mt-2 exposed to m-xylene. To this end, we employed an á la carte bi-cistronic gfp-lacZ reporter system for generating
Dockyu Kim et al.
Applied microbiology and biotechnology, 86(6), 1841-1847 (2010-01-19)
Escherichia coli cells expressing Rhodococcus DK17 o-xylene dioxygenase genes were used for bioconversion of m-xylene. Gas chromatography-mass spectrometry analysis of the oxidation products detected 3-methylbenzylalcohol and 2,4-dimethylphenol in the ratio 9:1. Molecular modeling suggests that o-xylene dioxygenase can hold xylene
Alan P Graves et al.
Journal of medicinal chemistry, 48(11), 3714-3728 (2005-05-27)
Molecular docking is widely used to predict novel lead compounds for drug discovery. Success depends on the quality of the docking scoring function, among other factors. An imperfect scoring function can mislead by predicting incorrect ligand geometries or by selecting
T Prabhu et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 948-955 (2011-05-10)
The FT-IR and FT-Raman spectra of m-Xylol molecule have been recorded using Bruker IFS 66V spectrometer in the range 4000-100cm(-1). The molecular geometry and vibrational frequencies in the ground state are evaluated using the Hartree-fock (HF) and B3LYP with 6-31+G
Dragana Bozinovski et al.
FEMS microbiology ecology, 81(1), 134-144 (2012-03-01)
A sulfate-reducing consortium maintained for several years in the laboratory with m-xylene as sole source of carbon and energy was characterized by terminal restriction fragment length polymorphism (T-RFLP) fingerprinting of PCR-amplified 16S rRNA genes and stable isotope probing of proteins
Yujie Zhang et al.
Journal of environmental sciences (China), 24(1), 124-130 (2012-07-13)
The atmospheric concentrations of carbonyls and BTEX (benzene, toluene, ethylbenzene, m,p-xylene and o-xylene) were measured simultaneously at a same sampling site in Beijing from September 2008 to August 2010. The average concentrations of the total measured carbonyls during autumn, winter
Qing-Hua Zhou et al.
Huan jing ke xue= Huanjing kexue, 32(12), 3623-3627 (2012-04-04)
An ion mobility spectrometer array was designed, in order to broaden the detection range of ion mobility spectrometer and improve the accuracy of compound identification. This instrument was based on the combination of ionization sources of 63Ni positive ion mode
Sulak Sumitsawan et al.
Environmental science & technology, 45(16), 6970-6977 (2011-07-19)
Titanium dioxide (TiO(2)) is a preferred catalyst for photocatalytic oxidation of many air pollutants. In an effort to enhance its photocatalytic activity, TiO(2) was modified by pulsed plasma treatment. In this work, TiO(2) nanoparticles, coated on a glass plate, were
Javier F Juárez et al.
Environmental microbiology, 15(1), 148-166 (2012-07-05)
The mbd cluster encoding genes of the 3-methylbenzoyl-CoA pathway involved in the anaerobic catabolism of 3-methylbenzoate and m-xylene was characterized for the first time in the denitrifying β-Proteobacterium Azoarcus sp. CIB. The mbdA gene product was identified as a 3-methylbenzoate-CoA
Lijun Xie et al.
Analytica chimica acta, 853, 303-310 (2014-12-04)
Metal-organic frameworks (MOFs) have received great attention as novel sorbents due to their fascinating structures and intriguing potential applications in various fields. In this work, a MIL-101(Cr)-coated solid-phase microextraction (SPME) fiber was fabricated by a simple direct coating method and
Vlasta Svecova et al.
Journal of exposure science & environmental epidemiology, 22(5), 455-460 (2012-06-07)
Personal exposures to volatile organic compounds (VOCs) were measured in the three industrial cities in the Czech Republic, Ostrava, Karvina and Havirov, while the city of Prague served as a control in a large-scale molecular epidemiological study identifying the impacts
Michalis Koutinas et al.
Environmental microbiology, 12(6), 1705-1718 (2010-06-18)
The structure of the extant transcriptional control network of the TOL plasmid pWW0 born by Pseudomonas putida mt-2 for biodegradation of m-xylene is far more complex than one would consider necessary from a mere engineering point of view. In order
Shu Cheng et al.
Environmental health perspectives, 119(12), 1712-1718 (2011-08-13)
Computational modeling of the absorption, distribution, metabolism, and excretion of chemicals is now theoretically able to describe metabolic interactions in realistic mixtures of tens to hundreds of substances. That framework awaits validation. Our objectives were to a) evaluate the conditions
Masashi Watanabe
Analytical chemistry, 81(19), 8213-8218 (2009-09-01)
Channels in a microfluidic device were rapidly created using an office inkjet printer. The process was easy enough for common end users to carry it out by themselves. A water-xylene interface was formed by combining two parallel channels that were
Jackelin Q Tran et al.
Archives of environmental contamination and toxicology, 63(1), 169-176 (2012-03-22)
The transport of mixed paint solvents through natural rubber latex (4 mil) and nitrile rubber (5 mil) gloves was evaluated after spray application of the paint formulation directly on the glove surface. Glove materials and thicknesses were those selected by
Danilo Pérez-Pantoja et al.
Environmental microbiology, 17(1), 64-75 (2014-03-05)
Pseudomonas putida mt-2 encompasses two alternative and potentially conflicting routes for benzoate metabolism, one meta pathway encoded by xyl genes of the pWW0 plasmid and mastered by the Pm promoter and XylS, and one chromosomally encoded ortho pathway initiated by Pben
Joohyung Lee et al.
Langmuir : the ACS journal of surfaces and colloids, 31(44), 11989-11999 (2015-10-21)
Electric charging of colloidal particles in nonpolar solvents plays a crucial role for many industrial applications and products, including rubbers, engine oils, toners, or electronic displays. Although disfavored by the low solvent permittivity, particle charging can be induced by added
Fei Yu et al.
Journal of hazardous materials, 192(3), 1370-1379 (2011-08-13)
The purified and oxidized multi-walled carbon nanotubes (MWCNTs) with different oxygen contents are employed as adsorbents to study their physicochemical properties and adsorption behaviors of toluene, ethylbenzene and m-xylene (TEX) in aqueous solutions. The results demonstrate that adsorption capacity is
Rafael Silva-Rocha et al.
Environmental microbiology, 13(9), 2389-2402 (2011-03-18)
The regulatory and metabolic networks that rule biodegradation of pollutants by environmental bacteria are wired to the rest of the cellular physiology through both transcriptional factors and intermediary signal molecules. In this review, we examine some formalisms for describing catalytic/regulatory
Rafael Silva-Rocha et al.
Molecular bioSystems, 7(11), 2982-2990 (2011-08-20)
Genetic networks are typically composed of a series of connected motifs that confer specific logic and dynamic properties to the resulting circuits. While some feed forward loop (FFL) variants abound in such networks, others (e.g. the type-4 incoherent FFL or
Rafael Silva-Rocha et al.
Environmental microbiology, 15(1), 271-286 (2012-11-23)
The TOL system encoded by plasmid pWW0 of Pseudomonas putida mt-2 is able to sense a large number of both exogenous and endogenous signals as inputs for the genetic and metabolic circuit that determines the biodegradation of m-xylene. However, whether
Habib Bagheri et al.
Journal of chromatography. A, 1375, 8-16 (2014-12-17)
In the present work, the roles of inorganic oxide nanoparticles on the extraction efficiency of polyethylene terephthalate-based nanocomposites were extensively studied. Four fiber coatings based on polyethylene terephthalate nanocomposites containing different types of nanoparticles along with a pristine polyethylene terephthalate
Bethany Warren et al.
Environmental science & technology, 42(15), 5461-5466 (2008-08-30)
A series of m-xylene/NO(x) photooxidation experiments were conducted to determine the influence of light intensity and radiation spectrum on secondary organic aerosol (SOA) formation within the UC Riverside/CE-CERT environmental chamber. The environmental chamber is equipped with 80 115-W black lights
Cheng Peng et al.
Journal of hazardous materials, 284, 10-18 (2014-12-03)
BTEX is a group of volatile organic compounds consisting of benzene, toluene, ethylbenzene and xylenes. Environmental contamination of BTEX can occur in the groundwater with their effects on the aquatic organisms and ecosystem being sparsely studied. The aim of this
Matteo Lusi et al.
Angewandte Chemie (International ed. in English), 51(16), 3928-3931 (2012-03-14)
A Werner complex is highly selective for o-xylene in a vapor mixture containing all three isomers. However, in the absence of o-xylene, the substrate shows similar selectivity for m-xylene over p-xylene. Kinetic studies show a different trend whereby m-xylene is
Eagleson M.
Concise Encyclopedia Chemistry, 832-832 (1994)
Anett Kondor et al.
Journal of chromatography. A, 1362, 250-261 (2014-09-03)
Adsorption isotherm data of some alkyl aromatic hydrocarbons (benzene, toluene, ethylbenzene, o-xylene, m-xylene and p-xylene) measured in the temperature range of 423-523K on a partially dealuminated faujasite type DAY F20 zeolite by inverse gas chromatography are presented in this work.
Mathieu Valcke et al.
Journal of toxicology and environmental health. Part A, 78(7), 409-431 (2015-03-19)
The objective of this study was to compare the magnitude of interindividual variability in internal dose for inhalation exposure to single versus multiple chemicals. Physiologically based pharmacokinetic models for adults (AD), neonates (NEO), toddlers (TODD), and pregnant women (PW) were
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