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Satyanarayana Nallani - One of the best experts on this subject based on the ideXlab platform.
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excess molar volumes and sound speed in phenylacetonitrile 1 2 dichloroethane phenylacetonitrile 1 1 2 trichloroethane phenylacetonitrile 1 1 2 2 tetrachloroethane phenylacetonitrile Trichloroethene and phenylacetonitrile tetrachloroethene at tempera
Journal of Chemical & Engineering Data, 2010Co-Authors: Asra Banu Syeda, Amara Jyothi Koppula, Sathyanarayana Boodida, Satyanarayana NallaniAbstract:The present paper reports the experimental data for density ρ, viscosity η, and speed of sound u in (phenylacetonitrile + 1,2-dichloroethane), (phenylacetonitrile + 1,1,2-trichloroethane), (phenylacetonitrile + 1,1,2,2-tetrachloroethane), (phenylacetonitrile + Trichloroethene), and (phenylacetonitrile + tetrachloroethene) over the entire range of composition at T = (303.15 to 313.15) K. These values have been used to calculate the excess molar volumes VE and deviation in isentropic compressibility Δκs. The excess molar volumes and deviation in isentropic compressibility are fitted to a Redlich−Kister-type equation to derive binary coefficients and standard deviation and to elicit the specific interactions like complex formation as well as the saturation of chlorine atoms with π electrons.
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excess molar volumes and sound speed in phenylacetonitrile 1 2 dichloroethane phenylacetonitrile 1 1 2 trichloroethane phenylacetonitrile 1 1 2 2 tetrachloroethane phenylacetonitrile Trichloroethene and phenylacetonitrile tetrachloroethene at temperatures of 303 15 308 15 and 313 15 k
Journal of Chemical & Engineering Data, 2010Co-Authors: Asra Banu Syeda, Amara Jyothi Koppula, Sathyanarayana Boodida, Satyanarayana NallaniAbstract:The present paper reports the experimental data for density ρ, viscosity η, and speed of sound u in (phenylacetonitrile + 1,2-dichloroethane), (phenylacetonitrile + 1,1,2-trichloroethane), (phenyla...
Asra Banu Syeda - One of the best experts on this subject based on the ideXlab platform.
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excess molar volumes and sound speed in phenylacetonitrile 1 2 dichloroethane phenylacetonitrile 1 1 2 trichloroethane phenylacetonitrile 1 1 2 2 tetrachloroethane phenylacetonitrile Trichloroethene and phenylacetonitrile tetrachloroethene at tempera
Journal of Chemical & Engineering Data, 2010Co-Authors: Asra Banu Syeda, Amara Jyothi Koppula, Sathyanarayana Boodida, Satyanarayana NallaniAbstract:The present paper reports the experimental data for density ρ, viscosity η, and speed of sound u in (phenylacetonitrile + 1,2-dichloroethane), (phenylacetonitrile + 1,1,2-trichloroethane), (phenylacetonitrile + 1,1,2,2-tetrachloroethane), (phenylacetonitrile + Trichloroethene), and (phenylacetonitrile + tetrachloroethene) over the entire range of composition at T = (303.15 to 313.15) K. These values have been used to calculate the excess molar volumes VE and deviation in isentropic compressibility Δκs. The excess molar volumes and deviation in isentropic compressibility are fitted to a Redlich−Kister-type equation to derive binary coefficients and standard deviation and to elicit the specific interactions like complex formation as well as the saturation of chlorine atoms with π electrons.
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excess molar volumes and sound speed in phenylacetonitrile 1 2 dichloroethane phenylacetonitrile 1 1 2 trichloroethane phenylacetonitrile 1 1 2 2 tetrachloroethane phenylacetonitrile Trichloroethene and phenylacetonitrile tetrachloroethene at temperatures of 303 15 308 15 and 313 15 k
Journal of Chemical & Engineering Data, 2010Co-Authors: Asra Banu Syeda, Amara Jyothi Koppula, Sathyanarayana Boodida, Satyanarayana NallaniAbstract:The present paper reports the experimental data for density ρ, viscosity η, and speed of sound u in (phenylacetonitrile + 1,2-dichloroethane), (phenylacetonitrile + 1,1,2-trichloroethane), (phenyla...
Elizabeth A Edwards - One of the best experts on this subject based on the ideXlab platform.
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sustained dechlorination of vinyl chloride to ethene in dehalococcoides enriched cultures grown without addition of exogenous vitamins and at low ph
Environmental Science & Technology, 2019Co-Authors: Luz Puentes A Jacome, Olivia Molenda, Pohsiang Wang, Ahsanul M Islam, Elizabeth A EdwardsAbstract:Trichloroethene (TCE) bioremediation has been demonstrated at field sites using microbial cultures harboring TCE-respiring Dehalococcoides whose growth is cobalamin (vitamin B12)-dependent. Bioaugm...
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mechanistic dichotomy in bacterial Trichloroethene dechlorination revealed by carbon and chlorine isotope effects
Environmental Science & Technology, 2019Co-Authors: Christina Lihl, Elizabeth A Edwards, Martina Daubmeier, Armin H Meyer, Barbara Sherwood Lollar, Lisa M. Douglas, Steffi Franke, Ivonne Nijenhuis, Alfredo Perezdemora, Martin ElsnerAbstract:Tetrachloroethene (PCE) and Trichloroethene (TCE) are significant groundwater contaminants. Microbial reductive dehalogenation at contaminated sites can produce nontoxic ethene but often stops at t...
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quantifying the effects of 1 1 1 trichloroethane and 1 1 dichloroethane on chlorinated ethene reductive dehalogenases
Environmental Science & Technology, 2011Co-Authors: Winnie W M Chan, Ariel Grostern, Frank E Loffler, Elizabeth A EdwardsAbstract:Mixtures of chlorinated ethenes and ethanes are often found at contaminated sites. In this study, we undertook a systematic investigation of the inhibitory effects of 1,1,1-trichloroethane (1,1,1-TCA) and 1,1-dichloroethane (1,1-DCA) on chlorinated ethene dechlorination in three distinct Dehalococcoides-containing consortia. To focus on inhibition acting directly on the reductive dehalogenases, dechlorination assays used cell-free extracts prepared from cultures actively dechlorinating Trichloroethene (TCE) to ethene. The dechlorination assays were initiated with TCE, cis-1,2-dichloroethene (cDCE), or vinyl chloride (VC) as substrates and either 1,1,1-TCA or 1,1-DCA as potential inhibitors. 1,1,1-TCA inhibited VC dechlorination similarly in cell suspension and cell-free extract assays, implicating an effect on the VC reductases associated with the dechlorination of VC to nontoxic ethene. Concentrations of 1,1,1-TCA in the range of 30–270 μg/L reduced VC dechlorination rates by approximately 50% relative t...
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chloroform respiration to dichloromethane by a dehalobacter population
Environmental Microbiology, 2010Co-Authors: Ariel Grostern, Melanie Duhamel, Sandra Dworatzek, Elizabeth A EdwardsAbstract:Summary Chloroform (CF), or trichloromethane, is an ubiquitous environmental pollutant because of its widespread industrial use, historically poor disposal and recalcitrance to biodegradation. Chloroform is a potent inhibitor of metabolism and no known organism uses it as a growth substrate. We discovered that CF was rapidly and sustainably dechlorinated in the course of investigating anaerobic reductive dechlorination of 1,1,1-trichloroethane in a Dehalobacter-containing culture. Like 1,1,1-trichloroethane dechlorination in this culture, CF dechlorination was a growth-linked respiratory process, requiring H2 as an electron donor and CF as an electron acceptor. Moreover, the same specific reductive dehalogenase likely catalyzed both reactions. This Dehalobacter population appears specialized for substrates with three halogen substituents on the same carbon atom, with widespread implications for bioremediation.
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1 1 1 trichloroethane and 1 1 dichloroethane reductive dechlorination kinetics and co contaminant effects in a dehalobacter containing mixed culture
Environmental Science & Technology, 2009Co-Authors: Ariel Grostern, Winnie W M Chan, Elizabeth A EdwardsAbstract:1,1,1-Trichloroethane (1,1,1-TCA) is a common groundwater contaminant that can be reductively dechlorinated to 1,1-dichloroethane (1,1-DCA) and monochloroethane, and can support the growth of certain dehalorespiring strains of Dehalobacter. We used reductive dehalogenase cell-free extract assays (with reduced methyl viologen) and whole cell suspension dechlorination assays (with hydrogen) and a Dehalobacter-containing enrichment culture to explore the kinetics of 1,1,1-TCA and 1,1-DCA reductive dechlorination in the presence of the common co-contaminants Trichloroethene (TCE), cis-dichloroethene (cDCE), and vinyl chloride (VC). These chlorinated ethenes were most significant inhibitors of 1,1,1-TCA dechlorination in cell-free extracts, indicating direct effects on the reductive dehalogenase enzyme(s). The inhibition was present but less pronounced in whole cell suspension assays. None of the chlorinated ethenes inhibited 1,1-DCA dechlorination in cell-free extract assays, yet cDCE and particularly VC were...
Michinori Suginome - One of the best experts on this subject based on the ideXlab platform.
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chirality switchable circularly polarized luminescence in solution based on the solvent dependent helix inversion of poly quinoxaline 2 3 diyl s
Chemical Communications, 2014Co-Authors: Yuuya Nagata, Tsuyoshi Nishikawa, Michinori SuginomeAbstract:Poly(quinoxaline-2,3-diyl)s containing (S)-2-methylbutoxy side chains were found to exhibit blue circularly polarized luminescence (CPL). The handedness of the CPL could be switched by a solvent-dependent helix inversion of the polymer backbone between chloroform (M-helical structure) and 1,1,1-trichloroethane (P-helical structure).
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non hydrogen bonding based solvent dependent helix inversion between pure p helix and pure m helix in poly quinoxaline 2 3 diyl s bearing chiral side chains
Chemical Communications, 2010Co-Authors: Tetsuya Yamada, Yuuya Nagata, Michinori SuginomeAbstract:Poly(quinoxaline-2,3-diyl)s bearing chiral (R)-2-butoxy side chains adopt pure right- or left-handed screw senses in CHCl3 and 1,1,2-trichloroethane, respectively.
Sathyanarayana Boodida - One of the best experts on this subject based on the ideXlab platform.
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excess molar volumes and sound speed in phenylacetonitrile 1 2 dichloroethane phenylacetonitrile 1 1 2 trichloroethane phenylacetonitrile 1 1 2 2 tetrachloroethane phenylacetonitrile Trichloroethene and phenylacetonitrile tetrachloroethene at tempera
Journal of Chemical & Engineering Data, 2010Co-Authors: Asra Banu Syeda, Amara Jyothi Koppula, Sathyanarayana Boodida, Satyanarayana NallaniAbstract:The present paper reports the experimental data for density ρ, viscosity η, and speed of sound u in (phenylacetonitrile + 1,2-dichloroethane), (phenylacetonitrile + 1,1,2-trichloroethane), (phenylacetonitrile + 1,1,2,2-tetrachloroethane), (phenylacetonitrile + Trichloroethene), and (phenylacetonitrile + tetrachloroethene) over the entire range of composition at T = (303.15 to 313.15) K. These values have been used to calculate the excess molar volumes VE and deviation in isentropic compressibility Δκs. The excess molar volumes and deviation in isentropic compressibility are fitted to a Redlich−Kister-type equation to derive binary coefficients and standard deviation and to elicit the specific interactions like complex formation as well as the saturation of chlorine atoms with π electrons.
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excess molar volumes and sound speed in phenylacetonitrile 1 2 dichloroethane phenylacetonitrile 1 1 2 trichloroethane phenylacetonitrile 1 1 2 2 tetrachloroethane phenylacetonitrile Trichloroethene and phenylacetonitrile tetrachloroethene at temperatures of 303 15 308 15 and 313 15 k
Journal of Chemical & Engineering Data, 2010Co-Authors: Asra Banu Syeda, Amara Jyothi Koppula, Sathyanarayana Boodida, Satyanarayana NallaniAbstract:The present paper reports the experimental data for density ρ, viscosity η, and speed of sound u in (phenylacetonitrile + 1,2-dichloroethane), (phenylacetonitrile + 1,1,2-trichloroethane), (phenyla...
