Study of indicial aerodynamic forces of multistage space vehicle systems. Volume 1 - Application of theory to basic geometries and to the Saturn 5 Final report, 28 Jun. 1967 - 27 Sep. 1968

Potential theory for determining aerodynamic forces of axisymmetric vehicles and Saturn

The Effect of NAG–thiazoline on Morphology and Surface Hydrophobicity of Escherichia Coli

The β-hexosaminidase inhibitor and structural analog of the putative oxazolium reaction intermediate of lytic transglycosylases, N-acetylglucosamine thiazoline (NAG–thiazoline), was synthesized in 46% overall yield and tested as an inhibitor of Escherichia coli growth. NAG–thiazoline, at concentrations up to 1 mg/ml, was not found to affect the viability of E. coli DH5α

Design and construction of a Bose Einstein condensate machine

A dilute gas Bose Einstein condensate (BEC) is a state of matter that occurs when a cloud of atoms in a potential are made cold and dense enough that they all occupy the potential\u27s ground state. The onset of this phenomenon occurs when their de Broglie wavelength, $\Lambda = \sqrt{2 \pi \hbar^2/mk_BT}$, becomes comparable in size to the inter-particle spacing. A BEC is a macroscopic quantum object, since all atoms in the BEC are described by a single quantum wavefunction and, as such, is a fundamental quantum many-body system. The first experimental demonstration of a dilute gas BEC was performed by Eric Cornell and Carl Wieman in 1995 and since then, several dozen groups around the world have achieved and study BECs. This thesis documents design and construction work performed in support of the Bose Einstein Condensate (BEC) experiment at the Los Alamos National Laboratory. The objective of the work performed was to upgrade the existing BEC machine in most of its significant subsystems to attain better experimental cycle times and BECs with a larger atom number than what was previously attainable, as well as improve the optical quality of the imaging and laser manipulation beams at the location of the BEC. These objectives were achieved through the construction of a new laser system with greater power and larger magneto-optical trap (MOT) beam diameters, a new quadrupole magnetic trap with better optical access and higher magnetic field gradients than the Ioffe-Pritchard coil configuration it replaced, and a cuvette-style quartz cell with a much higher optical quality than the hand-blown cell used previously. In addition to these improvements the feasibility of using phase-contrast imaging of the BECs created in this machine for future experimental goals was evaluated and found to be feasible

The role of Black churches in response to African American male well-being in the Rust Belt region : a single location case study of east side churches in Buffalo, NY

https://place.asburyseminary.edu/ecommonsatsdissertations/2529/thumbnail.jp

Fundamental investigation of stress corrosion cracking

Two principle areas studied were stress corrosion crack growth rates of a titanium alloy in liquid environments containing halide ions and pitting corrosion of titanium in bromide solutions. Two initial assumptions were made, that the rate of propagation was controlled by a macroscopic solution parameter and that this parameter was viscosity. A series of solutions were prepared using lithium chloride as the solute and water, methanol, glycerin, formic acid, acetone, dimethyl sulphoxide, etc. As solvents, these solutions were prepared with a 5:1 solvent-solute ratio. Viscosity was varied by changing the temperature and it was found: (1) In all solvents the velocity of cracking was proportional to the reciprocal of the viscosity. (2) Each solvent gave a separate relationship, (3) The temperature dependence and numerical values for the apparent activation energy of cracking and viscosity were the same

Stress corrosion cracking of titanium alloys: Studies of cracks in thin specimens; SCC of Ti-6Al-4V in chloride, iodide and fluoride solutions; stress corrosion cracking in molten salts; electrochemistry of freshly generated titanium surfaces

Electrochemistry of freshly generated titanium surfaces and stress corrosion cracking in aqueous solutions and in molten salt