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Showing 1 to 8 of 8 for “"ReactIR"”.
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Using collaborative filtering based recommendations to promote the social nature of online learning
… this problem the Reid Activity Recommendation (REACTIR) mechanism was created to enhance the social nature of online learning within three course sites at a large Midwestern university. Leveraging the Tsai et al. (2008) framework for exploring the social nature of online learning, the REACTIR …
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Lewis Base Catalyzed Enantioselective Aldol Additions: Preparative and Mechanistic Studies
Kinetic studies using ReactIR and rapid injection NMR (RINMR) spectroscopy have confirmed the existence of dual mechanistic pathways involving either one or two phosphoramides. Determination of Arrhenius activation parameters revealed that aldol addition occurs through the reversible albeit …
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Pd-Ag Catalyzed Aza-Piancatelli Reaction: From Synthesis to Mechanistic Investigations
… of the reaction, two analytical methods ReactIR and GCMS reaction monitoring were explored in chapter 4. While the ReactIR studies proved unsuccessful due to metallic deposition on the probe and baseline drift in spectra, further GCMS based investigations revealed the presence of an …
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Beschleunigte Entwicklung von Katalysatorsystemen und Polymeren durch Automatisierung, kombinatorische Methoden, schnelle Analytik und Datenanalyse
… Durch on-line Messung der IR-Spektren mit dem ReactIR von Mettler gelang es, bei homogenen Copolymerisationsreaktionen in Echtzeit sowohl die Katalysatoraktivitäten, die Polymerisationskinteik als auch den Einbau und die Sequenzverteilung der 1-Olefin-Comonomeren zu erfassen.
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Lewis Base Activation of Lewis Acids in Asymmetric Aldol Reactions of Silyl Ketene Acetals
… are dominant. Kinetic studies undertaken using ReactIR spectroscopy show that the reaction displays saturation kinetics in SiCl4. This suggests that the phosphoramide bound silyl cation complex is the catalyst resting state. Spectroscopic studies have garnered support for this conclusion through …
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Mechanical Agitation Effects on Physical Properties of Calcium-Silicate-Cement Sealers
… For real-time setting reaction assessment, a ReactIR FTIR (Mettler Toledo) spectrometer probe was employed to collect data for a 24-hour period. Data analysis was performed using the Student’s T-Test. For experimental-agitation and control groups respectively, mean flow was 18 (±3) mm and 19 …
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Biomimetic carboxylate-bridged diiron complexes : from solution behavior to modeling the secondary coordination sphere
… (5). The reaction was monitored by U V-Vis and ReactIR spectroscopy and compound 5 was characterized by X-ray crystallography, 5 7Fe M6ssbauer spectroscopy, Evans' method, and FTIR spectroscopy. The IR spectrum of compound 5 compares favorably to experimental spectroscopic data obtained for the …
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Monitoring Dissolution of Nonsteroidal Anti-Inflammatory Drugs Using Infrared Spectroscopy
<p>A comparison study was conducted to look at the formulation of three brands of naproxen sodium. These brands included Bayer Aleve ®, CVS All Day Pain Relief and Walgreens All Day Pain Relief. The active and inactive ingredients were the same yet the size and shape of the tablets differ among the …