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Showing 1 to 20 of 30 for “"propanediol"”.
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Pathways for Bacterial Oxidation of 1,2-Propanediol and Glyceric Acid
Made available in DSpace on 2014-12-05T21:45:31Z (GMT). No. of bitstreams: 1 6000244.pdf: 5299984 bytes, checksum: 7d05686b9e7254a5eeb6e24c5176d375 (MD5) Previous issue date: 1959
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Phase Diagram Determination of (2-Amino-2-Methyl-1, 3-Propanediol) AMPL-TRMP (Trimethylolpropane) Binary System
Organic "Plastic Crystal" Thermal Energy Storage (TES) Materials are characterized by unusually large entropies of solid-solid transition compared to their entropies of fusion. In this research program, we investigate the thermal behavior of a binary AMPL-TRMP system and develop a …
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CALPHAD modeling of phase diagram boundaries for binary 2-amino-2-methyl-1,3-propanediol (AMPL) and tris(hydroxymethyl) aminomethane (TRIS) system
The phase diagram assessment of binary AMPL-TRIS system was calculated using the CALPHAD approach. Thermo-Calc, TCC software was used to fit the experimental phase diagram data by simultaneous optimization of thermodynamic properties of pure components and phase equilibria data available in the …
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Genetic and environmental regulation of virulence genes in Salmonella enterica serovar Typhimurium.
… in the positive regulation of utilization of propanediol and ethanolamine, vitamin B12 synthesis, and expression of maltoporin, which transports maltose and maltodextrins across the bacterial cell membrane. Propanediol, ethanolamine, and maltodextrins are byproducts of digestion likely present …
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About the role of physico-chemical properties and hydrodynamics on the progress of a precipitation reaction
… More precisely, the used diols, 1,2-propanediol and 1,3-propanediol, are isomer with identical density and close viscosity. By keeping the water volume fraction constant and playing with the 1,2-propanediol and 1,3-propanediol volume fractions of the solvents, the mixtures surface …
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Development of Catalytic Processes for the Transformation of Low Value Chemical Feedstocks to Value Added Chemicals
… ethane and higher alkanes, and glycerol to 1,3-propanediol. Chapter 2 describes efforts to study the kinetics of methanol oxidation by aqueous sodium periodate. The presence of methane pressure in these reactions hinders the rate of methanol oxidation. These fundamental studies may provide novel …
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A pair of immiscible ternary liquids with matchable refractive indexes over a wide range of density and viscosity ratios
… water, and an “aqueous phase” consisting of 1,2- propanediol, CsBr, and water. For the oil phase, the index, density, and viscosity were measured at 120 binary and ternary compositions. For the polar phase and aqueous phase, binary and ternary data were available in the literature, along with the …
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Structural and Synthetic Studies of Potential Antitumor Natural Products
… methyl)amino]-1,3-propanediol and its analogs have been synthesized. Bioassay data showed they act by a different mechanism of action than their parental furanonaphthoquinone derivatives.
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Comprehensive analysis of metabolic pathways through the combined use of multiple isotopic tracers
… fed-batch fermentation for overproduction of 1,3-propanediol (PDO).
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Interactions of biomass derived oxygenates with heterogeneous catalysts in aqueous and vacuum environments
… groups on the first and third carbons, 1,3-propanediol and glycerol, form a multidentate surface species with a bridging alkoxide bond and an acid/base interaction through their two primary alcohol groups with Lewis acid sites of g-Al₂O₃. These interactions occur in the presence of bulk …
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Spectroscopic and Kinetic Characterization of Catalytic Materials for the Conversion of Biomass-Derived Compounds
… probe molecule, other C3 alcohols (1,2- and 1,3-propanediols, 1-propanol) were studied to understand how the position of the alcohol and alkyl groups affected the rates and selectivity of APR. It was observed that regardless of the positions of the functional groups the rates of reaction were …
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New routes to enantioenriched substances through small organic molecules
… of threo-2-dimethylamino-1-phenyl-1,3-propanediol (DMPP). The occurrence of p1,n1 salt formation can have profound effects on enantiomer separation of scalemic (non-racemic) mixtures. This phenomenon when accompanied by substrate self-association impedes the complete recovery of the …
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The susceptibility of baboons to the novel immunosuppressant, FTY720
… FTY720 (2 amino-2-(2-[ 4-octylphenyl] ethyl)-1,3-propanediol hydrochloride), a novel, immunosuppressive drug active in rodent and dog transplantation models, has shown no toxic side effects in pre-clinical studies although no long-term patient studies exist.
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Synthese, Stereochemie und Eigenschaften einiger organischer Tellurate(VI)
… were synthesised from ethanediol; rac- and S-1,2-propanediol; meso-, rac- and (R,R)-2,3-butanediol; [(R)-AlkOOCCHOH]2 Alk = Me, Et, i-Pr; AlkC(CH2OH)3 Alk = Me, Et. Binuclear tellurates of the type (L2Te)2O2 were synthesised from LH2 = ethanediol; meso-, rac- and (R,R)-2,3-butanediol; …
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UV stabilisation of poly(ethylene terephthalate)
… hydroxyphenoxy]-1,2-propanediol (32), 6,6’-(6-phenyl-1,3,5-triazine-2,4-diyl)bis(3-(2- hydroxyethoxy)phenol) (37) and both 32 and 37 were weathered alongside a PET control and PET containing Tinuvin 1577 1.10. The films were exposed for 1082 hrs in a QUV weatherometer …
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A study into the properties and applications of bacterial microcompartments and polyphosphate metabolism
… This thesis investigates the properties of the propanediol utilization (Pdu) and ethanolamine (Eut) utilization microcompartments and applications of their components in the cells of Lactobacillus reuteri, and Escherichia coli predominantly, with additional investigation into Yersinia spp. The …
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Theoretical Insights into Heterogeneous Metallic Catalysts for Biomass Based Hydrogen Production
… metallic catalysts (Pt, Pd) for the 1,2-Propanediol (1,2-PDO) and formic acid (FA) to hydrogen conversion was addressed by means of computational methods. In order to shed light into the key factors governing the reactivity of these catalysts multiple models were used, ranging from Pt low …
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Studies on new approaches of chiral discrimination for chiral analysis by regression modeling of spectral data.
… chiral drugs. In the first approach, (S)-(+)-1,2-propanediol or the racemic mixture of 2-butanol was reacted with the enantiomers of amino acids or chiral pharmaceutical compounds to form covalent derivatives (diastereomers). To circumvent usually long and cumbersome separation processes required …
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