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Showing 1 to 20 of 48 for “"REDUCTION POTENTIALS"”.
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The Formal Oxidation-Reduction Potentials of Ferric-ferrous in Phosphoric Acid
The formal redox potentials of the ferric-ferrous system have been determined in the media of perchloric (15), nitric (12), hydrochloric (13), sulfuric (15), and phosphoric (l) acids. The acids are named in the order of increasing extent to which the oxidation potential of the ferric-ferrous system …
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Physical consequences of natural and synthetic post-translational modifications
… and other enzymes that bear highly variable reduction potentials.
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Ribonucleotide reduction and redox regulation in Archaea : surprising twists on a common theme
To study the nucleotide reduction system in Archaea, we have expressed the Archaeoglobus fulgidus gene encoding the adenosylcobalamin (AdoCbl) dependent ribonucleotide reductase (afuRNR) protein. Initial characterization of the recombinant afuRNR indicates that it reduces CDP to dCDP in an AdoCbl …
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ΦΩΤΟΧΗΜΙΚΗ ΚΑΙ ΗΛΕΚΤΡΟΧΗΜΙΚΗ ΜΕΛΕΤΗ ΤΗΣ ΜΕΤΑΦΟΡΑΣ ΚΑΙ ΑΠΟΘΗΚΕΥΣΗΣ ΕΝΕΡΓΕΙΑΣ ΜΕ ΕΝΩΣΕΙΣ ΣΥΝΑΡΜΟΓΗΣ ΤΟΥ ΣΙΔΗΡΟΥ (ΙΙΙ)
… THAT A LINEAR RELATIONSHIP EXISTS BETWEEN THE REDUCTION POTENTIALS AND THE Σ6Χ HAMMETT PARAMETERS OF THE SUBSTITUENTS OF THE CHELATE RING. THE FLASH PHOTOLYSIS SHOWED THAT THE DECAY OF THE TRIPLET STATE OF ORGANIC COMPOUNDS BY THE COMPOUNDS FE (ACAL-CL)3 AND FE (BDO)3 WAS DUE TO ENERGY TRANSFER …
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Enzymatic activation of cytochrome P-450(cam)
… of the reconstituted proteins. In addition reduction potentials were measured and the ability of the chlorin-substituted proteins to carry out native and redox activity was investigated.
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Synthesis of photochemically active complexes for DNA recognition and binding
… and [Ru(P)3](PF6)2 do not seem to have reduction potentials in the excited states that are appropriate for nucleic base photo-oxidation.
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Proton-coupled electron transfer reactions in bio-inspired catalysis
… for hydrogen production, with rates and overpotentials comparable to leading, synthetic Pt catalysts while utilizing earth abundant metal centers in their active sites. Density functional theory calculations, in conjunction with complementary experiments, were conducted to understand the …
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ΦΑΣΜΑΤΟΣΚΟΠΙΚΗ ΚΑΙ ΗΛΕΚΤΡΟΧΗΜΙΚΗ ΜΕΛΕΤΗ ΕΝΩΣΕΩΝ ΣΥΝΑΡΜΟΓΗΣ ΤΟΥ ΚΟΒΑΛΤΙΟΥ (ΙΙΙ) ΚΑΙ ΧΑΛΚΟΥ (ΙΙ) ΜΕ Β-ΔΙΟΝΕΣ
… FREQUENCIES AS WELL AS THE POLAROGRAPHIC REDUCTION POTENTIALS ARE LINEARELY DEPENDENT ON HAMMETT Σ FUNCTIONS. IN THE CASE OF CO(III) CHELATES SIMILARLY DEPENDENT ARE THE RACAH PARAMETER B AND THE ENERGY OF THE FRONTIER MOLECULAR ORBITALS. FURTHERMORE IT WAS ESTABLISHED THAT THE INDUCTIVE …
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STRUCTURE REFINEMENT OF CYTOCHROME C555 (CHLOROBIUM, THIOSULFATOPHILUM).
… evolutionary implications. Second, the oxidation-reduction potential of cytochrome c₅₅₅ is significantly different from the oxidation-reduction potential of other cytochromes whose structures have been determined. Comparisons with the other structures would provide information concerning the …
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Influence of Iron Speciation on Redox Cycling and Reactivity With Persistent Organic Contaminants
… Observed reaction rate constants for contaminant reduction measured in batch reactions (kobs, s-1 ) increase with ligand concentration and pH when FeII concentration is fixed. Correlation analysis reveals that a single Fe II species typically dominates overall FeII reactivity with target compounds …
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Thermodynamic Studies of Metal Carboxylates
… in (pi)-backbonding to the ligands. The reduction potentials of Rh(,2)(C(,4)H(,7)O(,2))(,4)('+), Rh(,2)(C(,4)H(,7)O(,2))(,4)B('+), and Rh(,2)(C(,4)H(,7)O(,2))(,4)B(,2)('+) are analyzed, and provide further support for the extensive (pi)-backbonding capabilities of this metal cluster.
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Rearrangements of Radical Anions Generated from Cyclopropyl Ketones
… using homogeneous catalysis techniques. Standard reduction potentials and reorganization energies of substrates were derived using Marcus theory. Conjugative interactions with the cyclopropyl group are discussed.
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Relative rates of reaction of pyrite and marcasite with ferric iron at low pH
… + 16H⁺ was determined by calculating the rate of reduction of aqueous ferric ion from measured oxidation-reduction potentials. The reaction follows the rate law: -d m<sub>Fe³⁺</sub> / dt = k (A/M) m<sub>Fe³⁺</sub> where m<sub>Fe³⁺</sub> is the molal concentration of uncomplexed ferric iron, k is …
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Smart Building Energy Management System for Energy Efficiency and Demand Response
… forecasting, optimized scheduling, and load reduction potentials. Firstly, machine learning applications are used to derive a novel data-driven short-term predictive strategy to forecast the future values of solar radiation and PV power output. It allows for precise forecasts of thermal …
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M28 Fixed wing transport aircraft cost reduction
… need to be reduced significantly. Multiple cost-reduction concepts have been proposed by the manufacturing and procurement groups. An Optimization Team was also formed to lead the cost-reduction effort. However, a more systematic approach is required in order to achieve the ambitious reduction …
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Characterisation of OmcA From Shewanella oneidensis MR-1: Biophysical and Mineral Reduction Properties
… inal!electron!transfer!during!respiratory!mineral!reduction,!but!has!minimal! or! contrasting! properties! in! the! literature.! A! suite! of! biophysical! techniques! confirmed!the!bis?histidine!axial!ligation!of!all!OmcA’s!haem!content!in!the!crystal! structure! and! in! …
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Molecular electrocatalysis of hydrogen evolution: catalytic design studied by density functional theory
… molecular hydrogen evolving electrocatalysts. Reduction potentials and pKa’s were calculated for a variety of complexes with density functional theory in conjunction with appropriate experimental references in order to characterize the thermodynamics of the free energy of reaction for proton …
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The effect of alternative fuels and aftertreatment devices on measured mobile school bus emissions
… also tested.</p> <p>In order to evaluate the reductions, all tests were performed using a drive cycle developed by Rowan University. This drive cycle is a composite cycle developed from 11 actual school bus routes. The results reported herein were obtained by performing the drive cycle on a …
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The Physical Chemistry Underlying the Assembly and Midpoint Potential Control in a Series of Designed Protein-Maquettes
… oxygen transport (hemoglobins), oxygen reduction (oxidases), carbon-hydroxylation (oxygenases), and superoxide production (NADH oxidase). In natural oxidoreductases, determination of the course and rates of heme-protein association, what barriers are encountered, what affinity is …
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