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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 436 for “"methylene"”.
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In vitro comparison of methylene diphosphonate radiopharmaceuticals
<p>The radiopharmaceutical methylene diphosphonate (MDP) is a relatively new diagnostic tool and currently in widespread use as a gone imaging agent to delineate areas of altered osteogenesis. MDP is chelated with radioactive technetium-99m (Tc99m) and injected into the venous system of the body. …
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Stereoselective reactions of 16-Methylene 19-Norsteroids
… 17-substituent upon epoxidation of 3-methoxy-16-methylene-estra- 1,3,5(10)-trien-17-one and the derived 17β-hydroxy and 17β-acetoxy compounds was investigated. Alkaline hydrogen peroxide epoxidation of 3-methoxy-16-methyleneestra- 1,3,5(10)-trien-17-one occurred in good yields, but poor …
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Conformational Studies in Some 9-Methylene-9,10-Dihydroanthracenes
Made available in DSpace on 2014-12-09T17:36:07Z (GMT). No. of bitstreams: 1 6901361.pdf: 10055501 bytes, checksum: 5fd6eac4759419a72969e3f3bb7b9008 (MD5) Previous issue date: 1968
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Methylene Blue Reduction by Root Tips of Alluim Cepa
No abstract prepared.
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Proposed Route to Cyclopenta[c]thiophenes via Activated Methylene
… and their precursors using activated methylene. Cyclopenta[c]thiophene compounds show promise in the field of polymer and catalysis chemistry. These substituted polythiophenes are potential organic semiconductors and anti-tumor agents. The research presented shows the successful and …
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Engineering flexible metal-organic frameworks from methylene-hinged ligands
… materials composed of ligands that possess a methylene hinge – a flexible link between two coordinating groups – and the capacity to form a six-membered chelate ring with transition metals that moderates structural flexibility. A significant portion of this work characterises and explores the …
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Evaluation of the Degradation of Methylene Blue Using Photocatalytic Materials
… organic pollutants, one in-situ and one ex-situ. Methylene blue was chosen as a surrogate contaminant for both studies considering well studied degradation pathway literature. The in-situ method investigates immobilizing titanium dioxide in cement paste by functionalizing it with maleic anhydride …
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Synthetic and Conformational Studies of Some 9-Methylene-9,10-Dihydroanthracenes
Made available in DSpace on 2014-12-10T23:01:32Z (GMT). No. of bitstreams: 1 7317295.pdf: 4978673 bytes, checksum: fdda4816775a14f60f08f08ef72d3615 (MD5) Previous issue date: 1972
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The Chemistry of Oxygen Reduction: A Methylene Hydroxylase System and Components
Made available in DSpace on 2014-12-09T17:36:43Z (GMT). No. of bitstreams: 1 7013522.pdf: 3496620 bytes, checksum: b6a75b7b8b7ffb46a6d29d6d2d10a40b (MD5) Previous issue date: 1969
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The Synthesis and Chemical Profiling of 3,4-Methylene-Dioxymethamphetamine (MDMA) and Analogues
… examines the organic impurity profiles of 3,4-methylenedioxymethamphetamine (MDMA) and its analogue methylone that were synthesised from uncontrolled ‘pre-precursors’. Methylone was synthesised from catechol by one synthetic route. Safrole was synthesised from catechol by two synthetic routes …
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Methylene Hydroxylase Monooxygenases: Components and Properties of 2-Bornanone 5-Exo-Hydroxylase
Made available in DSpace on 2014-12-09T17:35:39Z (GMT). No. of bitstreams: 1 6706592.pdf: 3634784 bytes, checksum: 5621b40e3f6d49556ed84db496308b03 (MD5) Previous issue date: 1966
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Hydrothermal chemistry of methylene chloride and MTBE : experimental kinetics and reaction pathways
… and associated rates is essential. The rates of methylene chloride and methyl tert-butyl ether (MTBE) hydrolysis in sub- and supercritical water have been measured experimentally at 250 bar over a range of temperatures from 100 to 600°C. The rate constants for both compounds showed a local …
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Use of tissue culture to investigate the effect of methylation on methylene blue cytotoxicity
… three well known, commercially available dyes, methylene blue, toluidine blue-O and Victoria blue-BO. These dyes, exploited traditionally in industry for their powers as photosensitizers, have now attracted interest as possible agents in clinical photodynamic therapy (PDT). PDT is a novel …
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Synthesis and Characterization of methylene bis (p-cyclohexyl isocyanate)-poly (tetramethyl oxide) based Polyurethane Elastomers
… concerns the development and characterization of methylene bis (p-cyclohexyl isocyanate/butanediol) (HMDI/BD) based polyurethanes used in connection with surface-active anti-microbial polyurethanes. Previously studied polyurethanes having an isophorone diisocyanate/butanediol (IPDI/BD) hard block …
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A Study of the Effect of Methylene Blue on Lactate Metabolism of the Dog Erythrocyte
… (1) In 1924 reported that the administration of methylene blue to dogs resulted in a hemolytic anemia, He noted that the degree of anemia was proportional to the amount of dye administered (over the dose range used), and that if the dose was quite high, hemoglobinuria and hemoglobinonia occured. …
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A Study of the Reactions Between Sulphur Halides and Oxyhalides with Compounds Containing Active Methylene Groups
… chloride with compounds containing active methylene groups has led to a new synthesis of tetrasubstituted alkenes. The synthesis employs cheap and readily available starting materials, and leads to good yields of alkenes in a Simple one-stage process. The study has been divided into two …
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