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Full-Text Articles in Physical Sciences and Mathematics
Kinematic Analysis Of Mylonitic Rocks, Southern Ruby Mountains, Sw Montana: Evidence For Proterozoic Orogenic Crustal Thickening And Topographic Collapse, Jessica Sousa
Undergraduate Review
Mylonitic granitic rocks from a large shear zone within the southern Ruby Mountains in southwest Montana record evidence for a multiple tectonic movement history. The shear zone is 500 meters thick with ductile shear fabrics generally striking northeast and dipping to the northwest. Foliations in the adjacent country rocks are sub-parallel to the foliations within the mylonites suggesting shear zone development was contemporaneous with the regional deformation and metamorphism of the country rock. A well-developed mineral stretching lineation, defined by aligned sillimanite crystals, records predominantly dip-slip movement, but locally, oblique-slip is also preserved. Sheath-type folds developed in thin calc-silicate layers …
Interactions Of Cis-Bis Ruthenium Complexes With Monosaccharides, Lindsay Mcdonald
Interactions Of Cis-Bis Ruthenium Complexes With Monosaccharides, Lindsay Mcdonald
Undergraduate Review
Molecular recognition and binding of oligosaccharides play an essential role in many biological processes including cell-cell recognition, signaling and adhesion. Our group is currently involved in the development of metal based receptors that can effectively bind specific glycoconjugates. Species that can selectively bind and chemically alter membrane glycoconjugates have the potential to inhibit tumor cell metastasis, inflammation and fibrosis. As an initial step towards our goal the interactions of cis-Ru(bpy)2(DMF)22+ (bpy = bipyridine, DMF = dimethylformamide) and cis-Ru(acac)2(CH3CN)2+ (acac = acetylacetonate) with the monosaccharides glucose and mannose have been examined …
Synthesis Of Phenoxides With Pendant Amines And Catalytic Intramolecular Hydroaminations, Kenneth Awasung
Synthesis Of Phenoxides With Pendant Amines And Catalytic Intramolecular Hydroaminations, Kenneth Awasung
Undergraduate Review
One core focus of my research project, (my 2007 summer research) is to make structural analogs of substituted phenols to support the titanium catalysis of organic compounds. The synthesis and study of these and related ligands, (pyrrolyls, aldimines, salens, and other nitrogen/oxygen heterocycles) is a major field of organometallic chemistry. Bulky phenols and their analogs serve as highly effective ligands to support catalysis due to their sterics and electronics. I have been designing and have begun synthesizing phenol analogs using a series of aldol condensations and michael additions and other organic chemistry methodology to generate new substituted phenols. Our method …
Superconducting Phases In Bulk And Thin Film La2Cuo4, Brandon Green
Superconducting Phases In Bulk And Thin Film La2Cuo4, Brandon Green
Undergraduate Review
La2CuO4 is considered as the parent material of all high temperature superconductors. The magnetic nature of the material is antiferromagnetic and it is an insulator. During this research we produced a superconductor by doping ceramic La2CuO4 with excess oxygen. There are different methods to intercalate excess oxygen into a sample, but in this project we used an electrochemical method. After oxidation, the superconducting properties were measured using a Quantum Design MPMS SQUID magnetometer. The superconducting transition temperature (TC) was observed near 40 K with a superconducting volume fraction of 16%. Further oxidation …
Synthesizing And Characterizing Sr2Femoo6 Bulk And Thin Films, Louis Bianchini
Synthesizing And Characterizing Sr2Femoo6 Bulk And Thin Films, Louis Bianchini
Undergraduate Review
A Sr2FeMoO6 (SFMO) pellet was synthesized to use as a target in the Pulsed Laser Deposition (PLD) chamber. The method chosen was a solid state reaction of SrCO3, Fe2O3 and MoO3. All three materials were combined stoichiometrically, ground in a ball mixer, and annealed for 36 hours at 1000°C. A pellet press was custom designed and used to press the annealed powders into a pellet. The magnetic and structural properties of the powder were studied using a Quantum Design MPMS SQUID magnetometer and powder X-Ray diffractometer, respectively. Previous studies of …