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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Determination Of Intracellular Glutathione Concentration Using Monobromobimane, Ryan R. Owens
Determination Of Intracellular Glutathione Concentration Using Monobromobimane, Ryan R. Owens
Undergraduate Honors Capstone Projects
Asbestos is a general term for a group of fibrous silicates. Diseases such as asbestosis, bronchogenic carcinoma, and mesothelioma have been linked to asbestos exposure (1,2). The 1 two classes of asbestos, serpentine and amphibole, are distinguished by differences in structure and chemical composition (3). The amphibole crocidolite contains 27% iron while the serpentine chrysotile contains only 2-3% iron. The higher iron content of crocidolite is proposed to be a contributing factor for a much higher incidence of cancer with crocidolite exposure compared with chrysotile exposure ( 4). Iron mobilized intracellularly from asbestos fibers may participate in the formation of …
Characterization Of Dielectric Properties Of Earth Materials At Low Frequencies, Tarrah Dawn Henrie
Characterization Of Dielectric Properties Of Earth Materials At Low Frequencies, Tarrah Dawn Henrie
Undergraduate Honors Capstone Projects
Sharma and de Lima (1992) have proposed a model based on Fixman's theoretical development of charged macromolecules in external fields (1980). There are three types of charges considered: the fixed surface charges that are covalently bonded, the layer of bound counterions, and the diffuse layer (Fixman, 1980, Lyklema, 1983 ). Figure (1) shows these different layers. Other common theories, such as Schurr's only consider the bound counterions and the diffuse layer. Schurr assumes that the diffuse layer ions can exchange with the electrolyte. A consequence of this assumption is the lack of polarization of the diffuse layer. This leads to …
Plant-Availability Fractionation Of Nickel For Bioremediation, Jason Henrie
Plant-Availability Fractionation Of Nickel For Bioremediation, Jason Henrie
Undergraduate Honors Capstone Projects
The bioremediation of contaminated soils or the biomining of waste tillings has been explored through the use of hyperaccumulating plants such as S. polygaloides which is a nickel hyperaccumulator. However, it is important to discover which soils are well-suited for this type of process by determining the plant-availability of the nickel. By extracting the nickel sequentially with increasing severity it is possible to determine the chemical distribution, or fractionation, of nickel in a soil. One fraction is already suspected to be plant-available and correlates very well with the results of a previous plant-availability study. A calcareous Millville silt loam which …
Thermal Decomposition Of Cp*Re(Co)(No)No2, Kale Allen Swainston
Thermal Decomposition Of Cp*Re(Co)(No)No2, Kale Allen Swainston
Undergraduate Honors Capstone Projects
The focus of this work is to examine the thermal reactivity of the Cp*Re(CO)(NO)NO2 complex. Upon heating with a flame, the orange crystals decompose very rapidly, with a darkening of color and gas production. To investigate this reaction, the decomposition was carefully controlled by heating with N2 gas, and in heated solution. The products obtained from the heated solution were purified using column chromatography, yielding two new interesting compounds, believed to be Cp*ReNO dimers with bridging oxygens.
A Preliminary Analysis Of The Fluid History Of A Normal Fault In The Keno Pit, Alligator Ridge Mining District, White Pine County, Nevada, John G. Solum
Undergraduate Honors Capstone Projects
The flow of oil along faults is only poorly understood. In many cases a fault is the only means of transportation for the oil from its area of deposition to its current location. This assumption is reasonable due to chemical fingerprinting of oil. In some cases the oil in a reservoir and the oil in a fault zone have been analyzed chemically and found to be the same. The problem is this; early in a fault's history it produces a thin layer of fine-grained material between its fault surfaces. This condition is not conductive to fluid flow. Therefore another mechanism …
Site-Directed Mutagenesis Of The Nitrogenase Fe-Protein From Azotobacter Vinelandii, Talmage L. Shill
Site-Directed Mutagenesis Of The Nitrogenase Fe-Protein From Azotobacter Vinelandii, Talmage L. Shill
Undergraduate Honors Capstone Projects
Nitrogen fixation is the chemical reaction of dinitrogen (N2) being reduced to ammonia (NH3). This reaction occurs naturally by nitrogen fixing microorganisms which contain the enzyme nitrogenase. The overall reaction is written below.