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Full-Text Articles in Physical Sciences and Mathematics

Methods And Methodologies For Organic Synthesis, Frank Favaloro May 1996

Methods And Methodologies For Organic Synthesis, Frank Favaloro

Honors Theses

Methods and methodologies for organic synthesis


Remote Marine Aerosol In The Gulf Of Maine: An Sem Study, Eric S. Gordon Jan 1996

Remote Marine Aerosol In The Gulf Of Maine: An Sem Study, Eric S. Gordon

Honors Theses

Eight aerosol samples were collected from a height of 34 meters atop Petit Manan Light located 16 miles East of Bar Harbor, Maine between July 25, 1995 and August 1, 1995. Both coarse and fine fractions were collected on 8.0 and 0.2 micron polycarbonate membrane filters, respectively. The sampling station consisted of a sampling box as well as a weather station (with various instruments) to record weather data for help in the analysis. The samples were analyzed using a scanning electron microscope and energy dispersive x-ray spectroscopy. Cluster analysis was perforned on the particles, grouping particles together with similar chemical …


Determination Of Wavelength Dependent Quantum Yields For Iron (Iii) Photoreduction In Well Defined Chloride Media, J. Catherine Kneece Jan 1996

Determination Of Wavelength Dependent Quantum Yields For Iron (Iii) Photoreduction In Well Defined Chloride Media, J. Catherine Kneece

Honors Theses

The quantum yields for iron (lII) photoreduction in sodium chloride and sodium perchlorate media were measured as a function of wavelength. The experiments were conducted using natural levels of total iron, less than 300 nM. The results indicate that three species are photochemically active in these media, Fe(OH)+2, FeCl2+and FeCl2+. The quantum yields for (OH)+2 are 0.22 at 300 run and 0.076 at 340 nm. The quantum yields for FeCl+ are 0.048 at 300 run and 0.038 at 340 nm. The quantum yields for FeCl2+ are 0.088 at 300 nm and 0.051 at 340 nm. The data presented suggests that …


Alternatives To Nitroprusside As Hypotensive Agents, Timothy Casey Mccullough Jan 1996

Alternatives To Nitroprusside As Hypotensive Agents, Timothy Casey Mccullough

Honors Theses

The drug sodium pentacyanonitrosylferrate(2-)dihydrate, more commonly known as nitroprusside or nipride (Fig. 1), is a common vasodilating agent given clinically to patients with hypertension.12.22 Nitroprusside is effective in emergency rooms as it quickly reduces high blood pressure, but dosages are limited because of fear that cyanide could be released also. Nitroprusside is effective because the vasodilating agent nitric oxide, NO, is released. Nitric oxide is also recognized as an important biochemical messenger molecule.22 Our research involves a search for different species that could introduce nitric oxide into the body without cyanide. Transition metal complexes involving ruthenium, iron, and cobalt that …


A Computational And Experimental Investigation Of The Pinacol Coupling And Rearrangement Reactions, Ryan Sullivan Jan 1996

A Computational And Experimental Investigation Of The Pinacol Coupling And Rearrangement Reactions, Ryan Sullivan

Honors Theses

This project was developed from previous reports concerned with the pinacol coupling and rearrangement methodologies. It is hoped that the results and conclusions of this study may provide someone in the future a chance to gain a more complete view of this material. Analysis of the pinacol coupling reaction shows that the yields of the pinacol products are not statistical for the asymmetric cycloalkanone systems. Also, the yields of the 5-7 and 6-7 systems plotted versus ab initio gas phase calculations of HOMG-LUMO gaps showed r values at or near 1.00. This correlation is excellent and offers an example of …