Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Making a last-minute class schedule check, Ronny McCrory, 15, left and Nathan Tucker, 16, prepare to enter Edmond North High School 215 W Danforth."

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Del City's Bennie Butler, left, is expected to be one of the Eagles' offensive stars."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Norman catcher Keith Brooks tags out Metairie's Ricky Culotta during Monday Night's Mid-South Region 4 American Legion tournament game in Edmond."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Norman's Kip McBride, above, steals third."

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "With Vinny Lamia of Metairie, La., at bat, Norman's Keith Brooks stops a wild pitch to hold a runner on third base."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Leo Brown and Penny McCaleb are co-chairs for fund raising campaign to benefit the Metropolitan Library System Endowment Trust."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Anna rackliff's nimble fingers weave strands of natural materials into a basket."

High statistics, (> 4 x 10{sup 8} counts), room temperature measurements of the electron-positron momentum density of La{sub 2-x}Sr{sub x}CuO{sub 4} have been performed for samples with Sr concentrations of x - 0.0, 0.1, 0.13 and 0.2. These spectra have been analyzed in conjunction with theoretical calculations of the electron-positron momentum density. The metallic samples show features consistent with the presence of a Fermi surface, but its evolution with increasing Sr concentration does not follow the predictions of band theory. These results may indicate the effects of electron-electron correlation on the electron momentum distribution in the Cu-O plane.

A 1200 channel Si(Li) detector system has been developed for transvenous coronary angiography experiments using synchrotron radiation. It is part of the synchrotron medical imaging facility at the National Synchrotron Light Source. The detector is made from a single crystal of lithium-drifted silicon with an active area 150 mm long {times} 11 mm high {times} 5 mm thick. The elements are arranged in two parallel rows of 600 elements with a center-to-center spacing of 0.25 mm. All 1200 elements are read out simultaneously every 4 ms. A Intel 80486 based computer with a high speed digital signal processing interface is used to control the beamline hardware and to acquire a series of images. The signal-to-noise, linearity and resolution of the system have been measured. Human images have been taken with this system.

This home movie excerpt documents Saeed (Michael) and Patricia Saniei's vacation at Disney World and Universal Studios in Orlando, Florida. The footage contains recordings of interactive exhibits, performances, and a parade.

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

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dennis & Delpha Spunaugle - Murder victim and Wife."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bill Ruhman, right, is congratulated by Oklahoma City Bowling Council member James Fisher after being inducted into the State Bowling Hall of Fame Saturday. Ruhman also won two gold medals at the Senior Olympics in Baton Rouge, La., in June"

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Charles Johnson - Midwest City - City Mgr."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Anna rackliff's nimble fingers weave strands of natural materials into a basket."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Attracted by a 100-year-old saddle, John Wilguess, director of Enterprise Square, Jim Sundstrom, making marketing director for red carpet Country, and artist Nancy Stirman examine a display Monday honoring red Carpet Country at Enterprise Square in Oklahoma City."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Carolyn Skinner, Dean Dixon and Liz Ward, from left, attend the Challenges of Adult Living party."

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story. This story aired at 5pm.

Weekly student newspaper published in Hurst, Texas serving the Tarrant County Junior College District that includes school news and information along with advertising.

In general, the diffraction efficiency of gratings is limited by the constraints imposed by the type of geometry used to scan the photon energy. In the simplest example, the spherical grating monochromator (SGM), the deviation angle, the grating groove width and depth and the groove density are all constrained by considerations of the maximum photon energy and the tuning range for individual gratings. We have examined the case in which these parameters are unconstrained, resulting in predictions of the ultimate performance of lamellar type gratings for groove densities from 300 to 2400 1/mm for gold and nickel coatings. The differential method of Neviere et al was used for modeling the behavior of the gratings and justification is presented for this by rigorous comparison with measurements. The implications of these results for future monochromators based on a variable included angle geometry are discussed.