Applications in high energy physics accelerators and other fields require the use of thousands of superconducting RF (SRF) cavities that are made of high purity Nb material and the purity of niobium is critical for these cavities to reach the highest accelerating fields. Tantalum is the most prolific of metal inclusions, which can cause thermal breakdown and prevent the cavities from reaching their theoretical performance limits of 45-50 MV/m, and DOE Labs are searching for a technology that could detect small impurities in superconducting Nb sheets reaching the highest possible accelerating fields. The proposed innovative SQUID-based Nondestructive system can scan Niobium sheets used in the manufacturing of SRF cavities with both high speed and high resolution. A highly sensitive SQUID system with a gradiometer probe, non-magnetic dewar, data acquisition system, and a scanning system will be developed for fast detection of impurities in planar Nb sheets. In phase I, we will modify our existing SQUID-based eddy current system to detect 100 micron size Ta defects and a great effort will focus on achieving fast scanning of a large number of niobium sheets in a shorter time and with reasonable resolution. An older system operated by moving the sample 1 mm, …

Our proposed work on high resolution/high fidelity seismic imaging focused on three general areas: (1) development of new, more efficient, wave-equation-based propagators and imaging conditions, (2) developments towards amplitude-preserving imaging in the local angle domain, in particular, imaging methods that allow us to estimate the reflection as a function of angle at a layer boundary, and (3) studies of wave inversion for local parameter estimation. In this report we summarize the results and progress we made during the project period. The report is divided into three parts, totaling 10 chapters. The first part is on resolution analysis and its relation to directional illumination analysis. The second part, which is composed of 6 chapters, is on the main theme of our work, the true-reflection imaging. True-reflection imaging is an advanced imaging technology which aims at keeping the image amplitude proportional to the reflection strength of the local reflectors or to obtain the reflection coefficient as function of reflection-angle. There are many factors which may influence the image amplitude, such as geometrical spreading, transmission loss, path absorption, acquisition aperture effect, etc. However, we can group these into two categories: one is the propagator effect (geometric spreading, path losses); the other is the …

The requirement from ANSI/ANS-8.3 states: (1) a criticality alarm system meeting the requirements of this standard shall be installed in areas where personnel would be subject to an excessive radiation dose; and (2) excessive dose = any dose to personnel corresponding to an absorbed dose from neutrons and gamma rays equal to or greater than 0.12 Gy (12 rad) in free air. The requirement was misconstrued to imply that the Immediate Evaluation Zone (IEZ) had to cover out to 12 Rad of dose. This mis-interpretation prompted the following official clarification: The standard does not attempt to define the area that is to be evacuated, which is considered a management responsibility and outside the scope of this Standard. What we wanted was an IEZ that: (1) depended on the facility characteristics and hazards; (2) departed from the one 'Size' fits all mentality; (3) balanced the risk of a criticality with the risk of evacuating; and (4) was consistent with the emergency planning process. What they have is a facility that is a mile long; a facility that was falling down around them; a facility where workers are routinely in fall protection; and a facility where high noise is the normal condition. …

Photograph of Caddo Bridge, built in 1915, in Wilson County, Texas. Trees are visible on both sides of the bridge.

Funeral program for SSgt. Elutario Joseph Furet, Jr., January 9, 1935 and died June 21, 2008. The funeral was held July 8, 2008 at Grace First Baptist Church, officiated by Rev. Dr. Walter L. Starks. Funeral arrangements were made through Carter-Taylor-Williams Mortuary and he was buried in Ft. Sam Houston National Cemetery near San Antonio, Texas.

Choline oxidase (E.C. 1.1.3.17) catalyzes the two-step, four-electron oxidation of choline to glycine betaine with betaine aldehyde as enzyme-associated intermediate and molecular oxygen as final electron acceptor (Scheme 1). The gem-diol, hydrated species of the aldehyde intermediate of the reaction acts as substrate for aldehyde oxidation, suggesting that the enzyme may use similar strategies for the oxidation of the alcohol substrate and aldehyde intermediate. The determination of the chemical mechanism for alcohol oxidation has emerged from biochemical, mechanistic, mutagenetic, and structural studies. As illustrated in the mechanism of Scheme 2, the alcohol substrate is initially activated in the active site of the enzyme by removal of the hydroxyl proton. The resulting alkoxide intermediate is then stabilized in the enzyme-substrate complex via electrostatic interactions with active site amino acid residues. Alcohol oxidation then occurs quantum mechanically via the transfer of the hydride ion from the activated substrate to the N(5) flavin locus. An essential requisite for this mechanism of alcohol oxidation is the high degree of preorganization of the activated enzyme-substrate complex, which is achieved through an internal equilibrium of the Michaelis complex occurring prior to, and independently from, the subsequent hydride transfer reaction. The experimental evidence that support the mechanism …

The National Museum of the Pacific War presents an interview with L.V. Ruffin. Ruffin joined the Army Air Forces on 21 June 1941. After boot camp he worked as an Athletic Instructor at Davis-Monthan Air Force Base in Tucson, Arizona. He completed Primary Flying School in Stamford, Texas and Advanced Flying School in Lubbock, Texas. He provides some details of his flight training. In November of 1942 he flew to Sookerating, India. He provides details of flying over The Hump more than one hundred times in a C-46, and life in general at the base. He returned to the U.S. in July of 1944. In late 1944 through 1945 he completed Instrument School and transported injured soldiers within the U.S. He was discharged in December of 1945.

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.

The National Museum of the Pacific War presents an interview with L.V. Ruffin. Ruffin joined the Army Air Forces on 21 June 1941. After boot camp he worked as an Athletic Instructor at Davis-Monthan Air Force Base in Tucson, Arizona. He completed Primary Flying School in Stamford, Texas and Advanced Flying School in Lubbock, Texas. He provides some details of his flight training. In November of 1942 he flew to Sookerating, India. He provides details of flying over The Hump more than one hundred times in a C-46, and life in general at the base. He returned to the U.S. in July of 1944. In late 1944 through 1945 he completed Instrument School and transported injured soldiers within the U.S. He was discharged in December of 1945.

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.

Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

Semiweekly newspaper from Carthage, Texas that includes local, state, and national news along with advertising.