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Showing 1 to 20 of 279 for “"reactant"”.
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CHEMILUMINESCENCE ANALYSIS BASED ON TWO PHASE REACTANT SYSTEMS
<p>A new approach to analysis with chemiluminescent detection is proposed and demonstrated. Two Phase Chemiluminescence utilizes an immobilized reagent bulk phase and a sample phase which contains the analyte. The analyte is permitted to diffuse into the reagent phase under controlled conditions. A …
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Transient Behavior in Porous Electrodes During Reactant Depletion
Made available in DSpace on 2014-12-10T21:24:54Z (GMT). No. of bitstreams: 1 7500401.pdf: 5601521 bytes, checksum: f4b7330a1b515a748e87635758943920 (MD5) Previous issue date: 1974
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Co-reactant interactions with CVD surfaces: Activation or passivation of growth
… is to explore the chemical interactions of co-reactants with the film growth surface during low temperature chemical vapor deposition. Ammonia emerges as a particularly important additive because of: (i) the ability of catalytically active surfaces to dissociate NH3, which supplies H and N …
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The influence of reactant gas solubility on flooded flow fuel cells
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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The effects of molecular structures and reactant temperatures on soot formation in a coflow laminar flame
… explore the effects of aromatic hydrocarbons and reactant temperatures on soot formation in a coflow diffusion flame. The study is motivated by the observation that soot formation is influenced by the flame boundary and ambient conditions, i.e. fuel species, pressure, temperature, etc. The effects …
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Effects of flow on the activity of a WO₃-SiO₂ olefin disproportionation catalyst
… consisted of a study of the effects of the reactant flow rate on the activity of a tungsten oxide on silica catalyst during propylene disproportionation. A 10 percent tungsten oxide on silica catalyst (223 square meters per gram B.E.T. surface area) was used in a microcatalytic reactor. The …
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ΠΡΩΤΕΙΝΕΣ ΟΞΕΙΑΣ ΦΑΣΕΩΣ ΣΕ ΕΜΦΡΑΓΜΑΤΑ, ΕΓΧΕΙΡΗΣΕΙΣ ΚΑΙ ΛΟΙΜΩΞΕΙΣ
FIVE ACUTE-PHASE REACTANT PROTEINS CRP HAPTOGLOBIN, A1 ANTITRYPSIN, A2 MACROGLOBULIN, AND A1 ACID GLYCOPROTEIN WERE STUDIED AFTER MYOCARDIAL INFARCTION, SURGERY AND VARIOUS INFECTIONS. IN SUMMARY CRP WAS CONSISTENTLY THE MST SENSITIVEOF FIVE ACUTE-PHASE REACTANT PROTEINS AND IS THEREFORE …
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A new theory of premixed flames in near-stoichiometric mixtures
… derivation of a model for premixed flames in two-reactant mixtures in a formal asymptotic way. Using the method of matched asymptotics we are able to simplify the complicated governing equations of combustion and effectively decouple the hydrodynamic equations from those of heat and mass …
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Elucidating Concentration and Temperature-dependent Energy Limitations of a Novel Fluorinated-organosulfur Catholyte for Li Primary Batteries
… cell with a liquid catholyte based on the reactant 4-nitrophenylsfur (NO₂-Ph-SF₅) is studied in detail with emphasis on its energy limitations under practical cell conditions. While it has been demonstrated that the novel cell design can surpass the gravimetric energy density of industry …
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On-line economic optimization of a chemical reactor
… to predict on-line the economic optimum of a reactant concentration. In this manner the control system manipulates the reactant flow rate to maintain the optimum concentration during changes in reaction-reactor parameters with time. Typical parameter changes include the decay of reaction …
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Propagation and topology in turbulent premixed flames
… dataset is produced with methane-air as the reactant mixture burning in the thin reaction zone regime. Here, preliminary break-up (through self-interaction) of the reaction zone is seen with increasing turbulence intensity, as the flame speed is simultaneously inhibited. Critical points in …
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Isosurface Interactions Within Turbulent Premixed Hydrogen and Hydrocarbon Flames
… categorised into four different groups, namely reactant pocket, tunnel formation, tunnel closure and product pocket. The effect of isosurface interactions on flame propagation is analysed by expanding the equations for Surface Density Function (SDF) and displacement speed in the vicinity of a …
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METHODS OF AREA-SELECTIVE ATOMIC LAYER DEPOSITION OF A METAL OXIDE USING SMALL MOLECULE INHIBITORS AND COMPETITIVE ADSORPTION
… using different precursor (TMA, BDMADA-Al), co-reactant (H2O, t-BuOH), and process temperature (120, 285 °C) configurations. Pulsing a novel competitive co-adsorbate with the precursor in conjunction with cyclic reapplication of DMATMS demonstrated optimal (~99%) growth attenuation for a …
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Polymerization-Crosslinking Fabric Finishing, With Pad-Dry-Cure, Using Nonformaldehyde Btca/IA/AA Combinations to Impart Durable Press Properties in Cotton Fabric
… fabrics finished with various concentrations of reactants in the BTCA/IA/AA combinations. The regression analysis was used to determine the relationship among each finishing variable, BTCA, IA, and AA concentrations, mole ratio of acid monomers to the sodium hypophosphite monohydrate catalyst, …
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Unusual Electron Transfer Rate Effects due to Pyridyl Ring Substituents and Trace Group VIII b Hexacyano Complexes as Added Salts
… </sup> at reactant concentrations of 1.0 х 10<sup>-4</sup> M (where L, L’ = substituted pyridines) and the reaction between [(NH<sub>3</sub>)<sub>5</sub>Ru<sup>II</sup>Py]<sup>2+</sup> and [(NH<sub>3</sub>)<sub>5</sub>Ru<sup>III</sup>3FPy]<sup>2+</sup> at …
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Single-Chamber solid oxide fuel cells: modelling and experiments
… and micro tubular) under single-chamber (mixed-reactant) solid oxide fuel cell (SC-SOFC) conditions. In this respect, these designs have been computer analyzed and it is found that the micro-tubular design eliminates the possibility of cross diffusion/convection from the counter electrode, which …
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Fabrication and characterization of hollow silica aerogel spheres using sol-gel processing in the dual nozzle generation system
… spheres were the detailed chemical makeup of the reactant solution (which consists of tetraethylorthosilicate, ethyl alcohol, and water) and the gelation medium (which consisted of either ammonia and nitrogen gas or ammonium hydroxide), and the dimensions and relative positions of the nozzles used …
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A Gas-Liquid Reactor for High Mass Transfer Rates
The overall reaction rate of an absorbed gaseous reactant in a liquid solution is usually influenced by the combined effect of the reaction kinetics and heat and mass transfer rates. The kinetic study of such reactions requires the thorough understanding of the physical rate processes accompanied …
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