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Hydroperoxide formation in the radiolysis of aqueous DNA and the pyrimidine bases

Creator:: Schwiebert, Maris Carol
Abstract:: The formation of cytosine hydroperoxide was detected in aqueous cytosine solutions irradiated with Co-60 γ-rays at pH 2. The nucleotide of cytosine, cytidylic acid, forms a hydroperoxide which was detected in neutral solution. The stability of the hydroperoxides of cytosine, thymine, and their nucleotides was found to be a function...
Resource Type:: Masters Thesis
Full Text:: VI. Dependence of First-Order Rate Constant upon Iodide Concentration [I_] (M) k(sec ) 1. 59 x 10

A study of the photolysis of the aqueous thymine system at 214 nm, 229 nm and 254 nm

Creator:: Satcher, Robert Lee
Abstract:: The photolysis of the aqueous thymine system has been investigated at 214 nm, 229 nm and 254 nm at room temperature. Products of photolysis have been identified as hydrogen peroxide, 6-hydroxy-5- hydroperoxy thymine and tentatively 5-hydroxy-6-hydroperoxy thymine. These together with thymine loss, were determined quantitatively under a variety of conditions....
Resource Type:: Dissertation
Full Text:: crossing ES ] 1 1 sl T1 1 T1 SO + hvp phosphorescence P 1 k [ T ] intersystem crossing k [ T 1 SO 1 1

Vinylcarbene intermediates in some cyclic systems

Creator:: Swenson, Karl Edward
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE THESIS OF KARL EDWARD SWENSON for the degree of DOCTOR OF PHILOSOPHY in Chemistry

Fluorescence studies on the bases of the nucleic acids in solution at room temperature

Creator:: Hauswirth, William Walter
Abstract:: Fluorescence of adenine, guanine, thymine, cytosine, and uracil has been detected at room temperature in neutral aqueous solution using a digital signal accumulation technique and right angle fluorescence detection from solutions with absorbances between 0. 4 and 0. 7. The quantum yields are respectively 2.6 x 10⁻⁴, 3.0 x 10⁻⁴,...
Resource Type:: Dissertation
Full Text:: OF THE PURINE AND PYRIMIDINE BASES OF THE NUCLEIC ACIDS IN NEUTRAL AQUEOUS SOLUTION AT 300° K 38

Structure and radiolysis of concentrated nitrate solutions

Creator:: Kiwi, John Tichauer
Resource Type:: Dissertation
Full Text:: -7.0 -7.4 + K 15.3 15.3 11.3 3.3 3.4 Cs 25.5 27.1 21.4 15.6 15.5 a Padova (1964 bConway et al

Studies of time-resolved fluorescence spectroscopy and resolved absorption spectra of nucleic acid components

Creator:: Fu, Yingxian
Resource Type:: Dissertation
Full Text:: -2Na-Nr)]1/2 Ny and VAR = E Wk(Yk k)2 k=1 where VAR is the variance, Wk is an optional weight

Analytical utilization of hafnium and zirconium borohydrides

Creator:: Walsh, Ronald Edward
Resource Type:: Dissertation
Full Text:: borohydrides AN ABSTRACT OF THE THESIS OF RONALD EDWARD WALSH, JR. for the DOCTOR OF PHILOSOPHY (Name

Effects of atmospheric pressure on line widths and spatial distributions of the transient atomic absorption signals of minor constituents in metal samples atomized by a dye laser microprobe

Creator:: Manabe, Ronald M.
Abstract:: Investigations of plasma production by a pulsed dye laser microprobe were made. Comparisons between a Q- switched and a pulsed dye laser system were made on the intensity of the continuum produced by atmospheric breakdown. The dye laser system was foundtominimize the production of the continuum which in turn allowed...
Resource Type:: Dissertation
Full Text:: indicated that the temperature of the plasma had cooled dramatically from an estimated 10, 000 -20, 000° K

Sample entraining multi-electrode plasma sources for atomic emission spectroscopy

Creator:: Lee, Gae Ho
Abstract:: Plasma sources with multiple electrodes have been developed and characterized in this research for atomic emission spectroscopy. Multi-electrode plasma sources use electrodes to shape the plasma in order to continuously entrain a sample stream in the center of hot plasma, in a manner similar to an inductively coupled plasma (ICP)...
Resource Type:: Dissertation
Full Text:: at 8 mm above the top of the quartz tube are 5000 K and 1.0x1015 cm-3 for a 30-mm plasma. When

Investigation of the relationships between laser energy and vaporized target material, continuum intensity, and plume energy in laser plume spectroscopy

Creator:: Flugstad, Paul Morris
Abstract:: A focused Q-switched neodymium-doped glass laser with power levels ranging from 1-6 MW and with a 50-nsec halfwidth, was used to vaporize copper metal. Experimental measurements showed that the amount of material vaporized away from the target was not linear with laser power and was much less than could be...
Resource Type:: Masters Thesis
Full Text:: express his gratitude to Dr. Edward Piepmeier for his help, guidance and encouragement throughout the

ScholarsArchive@OSU

Hydroperoxide formation in the radiolysis of aqueous DNA and the pyrimidine bases

A study of the photolysis of the aqueous thymine system at 214 nm, 229 nm and 254 nm

Vinylcarbene intermediates in some cyclic systems

Fluorescence studies on the bases of the nucleic acids in solution at room temperature

Structure and radiolysis of concentrated nitrate solutions

Studies of time-resolved fluorescence spectroscopy and resolved absorption spectra of nucleic acid components

Analytical utilization of hafnium and zirconium borohydrides

Effects of atmospheric pressure on line widths and spatial distributions of the transient atomic absorption signals of minor constituents in metal samples atomized by a dye laser microprobe

Sample entraining multi-electrode plasma sources for atomic emission spectroscopy

Investigation of the relationships between laser energy and vaporized target material, continuum intensity, and plume energy in laser plume spectroscopy

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