Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 39 for “"Sodium azide"”.
-
Studies of sodium azide with tetraphenylcyclopentadienones and various analogs
The reaction of sodium azide with 2-p-chloro- and 2-p–methoxyphenyl–3,4,5-triphenyl–2,4-cyclopentadien– Iâ one was studied to determine if the substituent would have any appreciable effect on the product distribution of the corresponding …
-
The reaction of sodium azide with ethylene sulfides, ethylenimines and trimethylene oxide
Dissertation (Ph.D.)--University of Kansas, Chemistry, 1952.
-
The Catalysis of The Reaction Between Iodine and Sodium-Azide by Sulfhydryl Groups
Made available in DSpace on 2014-12-05T23:07:48Z (GMT). No. of bitstreams: 1 0004486.pdf: 4333262 bytes, checksum: 9da5ed32f7cefc31a4e5266d690f0ae4 (MD5) Previous issue date: 1952
-
The selective stimulation of respiration in mixed cultures of bacteria and protozoa
… of bacteria for short incubation periods. Sodium azide, 2, 4-dinitrophenol, and sodium fluoride were used for the selective stimulation of respiration or inhibition of assimilation processes. Sodium azide was the only agent which produced a marked degree of stimulation of respiration for …
-
Survival and chemical control of Cylindrocladium spp. inciting root rot of black walnut seedlings
… root rot of black wainut seedlings with sodium azide at 224 kg/ha applied by the plowdown method was comparable to MC-33 at 504 kg/ha. Sodium azide at 67 kg/ha was only marginally effective in disease control. Reduction of Cylindrocladium microsclerotium populations, qualitatively assayed …
-
Investigation of the steric and/or electronic effects associated with the (1,5)-sigmatropic rearrangement of 1-substituted-2,3,4,5-tetraphenyl- 2,4-cyclopentadien-1-ols
… resulted from the acid promoted addition of sodium azide to tetracyclone. The presence of an intermediate bicyclic triazoline eliminated the Schmitt mechanism as a viable reaction pathway.
-
SYNTHESIS AND CHARACTERISATION OF NOVEL BIOPOLYMERS VIA CLICK CHEMISTRY
… of copper catalysed Huisgen 1,3-dipolar azide–alkyne cycloaddition, as an efficient Click reaction, for the synthesis of novel biopolymers with a broad range of potential medical/industrial applications. The strategy is to develop a powerful tool for the synthesis of libraries of …
-
Development and application of a PCR multiplex to assess the quality and quantity of forensic DNA extracts
… Five methods: cell lysis solution (with 1% sodium azide), dehydration / freeze drying, ethanol (96%), freezing and room temperature storage were used to study the effectiveness of preservation methods on fresh and three-month old decomposed pig bone samples which were preserved for 6 weeks, …
-
Angiotensin's Role in Hypoxic Injury
… protected cortical neuronal cultures from sodium azide-induced apoptosis. We show that K+ channels are required for AT2 receptor neuroprotection and more specifically the actions of the delayed rectifier K+ channel. We suggest that the yielding ionic effect resulting from the activation of …
-
Synthesis of 4-Azidocoumarins and Their Use in Copper-Catalyzed Azide-Alkyne Cycloaddition reactions
… to the 4-azidocoumarins by reaction with sodium azide (NaN3), and the overall process was simplified to a one-pot, two-step process. The methodology reduced the need for additional manipulations and purifications. Using the 4-azidocoumarins thus prepared, the 1,4-disubstituted-1,2,3 …
-
The sorption fate of active pharmaceutical ingredients in soils receiving high wastewater inputs and implications for risk assessments
… autoclaving and the addition of 0.2 g L-1 sodium azide were studied. None of the methods successfully sterilised the soils and some changes in soils were identified post-treatment. Autoclaving destroyed the soil structure, turning it into a fine powder and significantly increasing DOC. …
-
Methods for Improving Challenging DNA Profiles and Molecular Preservation of Soft Tissue Samples
… lysis solution, or cell lysis solution with 1% sodium azide, which had been stored at room temperature for seven years. Samples were re-extracted to assess the long-term efficacy of these storage solutions. The results show that ethanol and cell lysis solution with 1% sodium azide were …
-
Fluorinated amino acid derivatives
… has been developed. All attempts to alkylate the sodium salt of diethyl malonate, ethyl acetoacetate, or diethyl acetamidomalonate with 2-bromo-3-fluorobutane failed. New phosphonoacetates, tert-butyl and benzyl diethylphosphono-acetates were prepared as very versatile intermediates in the …
-
The role of respiration-dependent proton translocation in the acid tolerance of Gluconobacter oxydans
… of respiration, experiments were conducted using sodium azide and 2,4-dinitrophenol; both compounds prevented the acidification that otherwise occurred following glycerol addition. Because glycerol oxidation reversed the NaCl-induced flow of H + into the cell, it appeared that respiration might …
-
Regioselective synthesis of curdlan derivatives
… bromide was then nucleophilically displaced by sodium azide to produce the versatile precursor 6-azido-6-deoxycurdlan. Its water solubility was enhanced either by the incorporation of hydrophilic trioxadecanoate esters into O-2/4 positions or by the borohydride reduction to afford …
-
Anoxia-Induced Changes in Action Potential Propagation in a Non-Myelinated Axon
… compared to controls. Brief application of sodium azide (NaN3) as an acute metabolic inhibitor did not subsequently affect DCMD’s conduction velocity or ability to fire at high frequencies during the recording period. There were no significant differences from control animals with …
-
Carbon Nitride as a Heterogeneous Photocatalyst for Organic Transformations
… by the cross-coupling of aryl halides with sodium azide in mild conditions. Mechanistic studies are performed to deduce the formation of anilines instead of aryl azides.
-
Development and Comparison of 17beta-Estradiol Sorption Isotherms for Three Agriculturally Productive Soils From Different Physiographic Regions in Virginia
… solution of 5 mM calcium chloride and 100 mg/L sodium azide added to four separate soil samples representative of productive agricultural soils from three different physiographic regions of Virginia. Groseclose loam, Myatt sandy loam and Cecil loam were supplied by the Crop and Soil …
-
The synergistic role of light and heat in liquid-based nanoparticle manipulation
… This resulted in thermophoretic separation of sodium azide ions, causing a local electric field that was used to manipulate 26 nm polystyrene beads. The nanoparticles were observed to follow the NIR heating spot, enabling light-controlled nanoparticle swarming. The induced 3D temperature …
-
Design, synthesis and biological evaluation of novel tetra-substituted quinoline-3-carboxamides derivatives
… nucleophilic substitution reaction with sodium azide and afforded (Z)-5-((tetrazolo [1,5a] quinoline-4-yl) methylene) thiazolidinedi-2,4-one 56A-F. (Z)-ethyl-2-(2-5-((7bromotetrazolo [1,5a] quinolin-4-yl) methylene-2,4-dioxothiazolidin-3-yl) acetamido) acetate 57 was synthesised from the …
Page 1 of 2