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Full-Text Articles in Physical Sciences and Mathematics
Detection And Analysis Of Carbonyl Compounds In Rural Cloudwater, Steven Bart Bertman
Detection And Analysis Of Carbonyl Compounds In Rural Cloudwater, Steven Bart Bertman
Honors Theses
A new technique for aqueous determination of aldehydes and ketones was field tested along with a new technique for ambient air analysis. The work was done during the summer of 1984 on Whiteface Mountain in Wilmington, NY. Both techniques utilized carbonyl derivitization as their 2,4-dinitrophenyl hydrazones and subsequent analysis by reversed phase HPLC. Analysis of the blank levels for the ambient air method shows the levels found to be non-detectable. The aqueous method worked well. Formaldehyde, acetaldehyde, and acetone were the only species found in cloud water. They were generally present in concentrations between .5 uM and 4 uM. Little …
The Syntheses Of Benzo-(2.2)-Paracyclophane, 2, 15-Dithia-(3.3)-Napthalenophane, And Hexamethylbenzene Dichloride, David Gene Barrett
The Syntheses Of Benzo-(2.2)-Paracyclophane, 2, 15-Dithia-(3.3)-Napthalenophane, And Hexamethylbenzene Dichloride, David Gene Barrett
Honors Theses
The purpose of this study was the preparation by a novel approach of benzo-(2.2)-paracyclophane. Also synthesized were the syn-and anti-isomers of 2,15-dithia (3.3)- napthalenophane. The results of these syntheses are supported by spectral studies. In preparation for future study of the ruthenium complexes of these cyclophanes, hexamethylbenzeruthenium dichloride was also synthesized.
Determination Of The Equilibrium Constant For The Acetaldehyde-Bisulfite Addition Compound, Mark B. Richard
Determination Of The Equilibrium Constant For The Acetaldehyde-Bisulfite Addition Compound, Mark B. Richard
Honors Theses
Synthesis of the addition compounds of formaldehyde, acetaldehyde, acetone, and propionaldehyde with sodium bisulfite was achieved using the method of Stewart and Donnally. Recognition of a water comtamination led to a method for determining purity using the integrations from NMR spectrometry. An equilibrium constant for the acetaldehyde-bisulfite addition compound was determined using the method of Dasgupta. A value of 6.3 x 10-5 was determined at a ph of 4.7. This value correlates well in magnitude when compared to the value of 1.56 x 10-5 for the formaldehyde-bisulfite addition compound at pH 5.0 determined by Dasgupta and also with Stewart and …
A Study Of Chemiluminescence Via Flash Photolysis, Craig Lawrence Shalmi
A Study Of Chemiluminescence Via Flash Photolysis, Craig Lawrence Shalmi
Honors Theses
We are interested in understanding the mechanistic details of photo-initiated chemiluminescent reactions. Currently, we are examining reactions which lead to luminescent from electronically excited nitric oxide. Stedman has reported observing NO gamma-band emission in the thermal reaction of hydrazoic acid, HN3 with O(3P). The rate constant for the production of NO* is low and, consequently, the emission intensity is weak. We are endeavoring to generate excited NO from HN3 and O(1D), the later produced in the flash photolysis of ozone. It is hoped that a greater population of NO* will be produced yielding a greater chemiluminescent intensity. By observing the …
Geodesic Orbits About An Axisymmetric Mass Distribution, David J. Dean
Geodesic Orbits About An Axisymmetric Mass Distribution, David J. Dean
Honors Theses
The General Theory of Relativity (GRT) gives rise to many interesting questions, one of which is a question about how test particles orbit various relativistic mass configurations. A test particle is defined as an electrically neutral particle small enough that its self gravitating energy, as calculated using standard Newtonian theory, can be neglected when compared with the particle's rest mass, ie. M/R << 1. (Here M is the mass of the particle in meters, and R is the radius of the particle again in meters. The mass of the sun in these units is 1.47 km.) For example, the earth, which can be considered a test particle for the sun, travels about the sun in an elliptic orbit. What would happen if the sun suddenly became a black-hole? How would the earth's orbit be affected? It is the purpose of this paper to answer these questions not only for the case of the spherical black-hole (which has been extensively studied), but also for the case of an axisymmetric mass distribution idealized by a long thin rod-like mass (which will henceforth be referred to as a line mass). The classical case and relativistic case concerning orbits about the line mass will be discussed, along with some interesting features of the relativistic line mass orbits. Some background information concerning GRT will be needed before the problem of line mass is approached.
The Examination Of The Adsorption Capabilities Of The "Magic" Black Rocks Of The Little Missouri River, Denise Leverett
The Examination Of The Adsorption Capabilities Of The "Magic" Black Rocks Of The Little Missouri River, Denise Leverett
Honors Theses
It has been seen that manganese oxides precipitate from aqueous solution as they pass downstream from cold water release reservoirs. This precipitation is visible in the form of black coatings on gravels in the river or stream bed. These oxide coatings not only cause the further oxidation and precipitation of manganese ions but also have the capacity for adsorbing trace metals from the system. The amount of metal adsorbed varies with the element. This study not only addresses the various elements which may be adsorbed but also the rates at which adsorption occurs and the factors which affect those rates.