The success of bandgap engineering has made high efficiency broadband multi-junction solar cells possible with photo-response out to the band edge of Ge. Modeling has been conducted which suggests that current double layer anti-reflection coating technology is not adequate for these devices in certain cases. Approaches for the development of higher performance anti-reflection coatings are examined. A new AR coating structure based on the use of Herpin equivalent layers is presented. Optical modeling suggests a decrease in the solar weighted reflectance of over 2.5{percent} absolute as a result. This structure requires no additional optical material development and characterization because no new optical materials are necessary. Experimental results and a sensitivity analysis are presented.

Lecture given Wednesday, February 23, 2000, 3:30 PM at Abilene Christian University: "Numerically, theologically and ministerialy, Spanish-speaking Churches of Christ have grown out of the roots of Catholicism, Pentecostalism and influences known as curanderismo (ethnobotany or folk healing)."

Lecture given Wednesday, February 23, 2000, 8:30 AM at Abilene Christian University: "Numerically, theologically and ministerialy, Spanish-speaking Churches of Christ have grown out of the roots of Catholicism, Pentecostalism and influences known as curanderismo (ethnobotany or folk healing)."

Lecture given Wednesday, February 23, 2000, 11:00 AM at Abilene Christian University: "Numerically, theologically and ministerialy, Spanish-speaking Churches of Christ have grown out of the roots of Catholicism, Pentecostalism and influences known as curanderismo (ethnobotany or folk healing)."

Lecture given Wednesday, February 23, 2000, 8:30 AM at Abilene Christian University: "A close reading of Genesis 12-50 demonstrates that the patriarchs provide an excellent model of spiritual formation and faith development for today's church."

Lecture given Wednesday, February 23, 2000, 11:00 AM at Abilene Christian University: "A close reading of Genesis 12-50 demonstrates that the patriarchs provide an excellent model of spiritual formation and faith development for today's church."

Lecture given Wednesday, February 23, 2000, 3:30 PM at Abilene Christian University: "A close reading of Genesis 12-50 demonstrates that the patriarchs provide an excellent model of spiritual formation and faith development for today's church."

Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.

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

Lecture given Wednesday, February 23, 2000, 8:30 AM at Abilene Christian University: "How one healthy, growing congregation enjoyed a year-long trip back to the basics of faith."

Lecture given Wednesday, February 23, 2000, 3:30 PM at Abilene Christian University: "How one healthy, growing congregation enjoyed a year-long trip back to the basics of faith."

Lecture given Wednesday, February 23, 2000, 11:00 AM at Abilene Christian University: "How one healthy, growing congregation enjoyed a year-long trip back to the basics of faith."

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

Daily newspaper from Altus, Oklahoma 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.

This report is a summary of the results of Phase 1 of this contract. The objective was to evaluate the potential of assist technologies for direct-injected alternative fuel engines vs. glow plug ignition assist. The goal was to demonstrate the feasibility of an ignition system life of 10,000 hours and a system cost of less than 50% of the glow plug system, while meeting or exceeding the engine thermal efficiency obtained with the glow plug system. There were three tasks in Phase 1. Under Task 1, a comprehensive review of feasible ignition options for DING engines was completed. The most promising options are: (1) AC and the ''SmartFire'' spark, which are both long-duration, low-power (LDLP) spark systems; (2) the short-duration, high-power (SDHP) spark system; (3) the micropilot injection ignition; and (4) the stratified charge plasma ignition. Efforts concentrated on investigating the AC spark, SmartFire spark, and short-duration/high-power spark systems. Using proprietary pricing information, the authors predicted that the commercial costs for the AC spark, the short-duration/high-power spark and SmartFire spark systems will be comparable (if not less) to the glow plug system. Task 2 involved designing and performing bench tests to determine the criteria for the ignition system and the …

Electro-osmosis, a coupled-flow phenomenon in which an applied electrical potential gradient drives water flow, may be used to induce water flow through fine-grained sediments. We plan to use this technology to remediate chlorinated solvent-contaminated clayey zones at the LLNL site. The electro-osmotic conductivity (k{sub e}) determined from bench-top studies for a core extracted from a sediment zone 36.4-36.6 m below surface was initially 7.37 x 10{sup -10} m{sup 2}/s-V, decreasing to 3.44 x 10{sup -10} m{sup 2}/s-V, after electro-osmotically transporting 0.70 pore volumes of water through it (195 ml). Hydraulic conductivity (k{sub h}) of the same core was initially measured to be 5.00 x 10{sup -10} m/s, decreasing to 4.08 x 10{sup -10} m/s at the end of processing. This decline in permeability is likely due to formation of a chemical precipitation zone within the core. Water splitting products and ions electromigrate and precipitate within the core; H{sup +} and metal cations migrate toward the cathode, and OH{sup -} from the cathode moves toward the anode. We are now exploring how to minimize this effect using pH control. The significance of this technology is that for this core, a 3 V/cm voltage gradient produced an initial effective hydraulic conductivity of …

Lecture given Wednesday, February 23, 2000, 8:30 AM at Abilene Christian University: "One congregation's efforts at evangelizing Hispanics along the South Texas-Mexican border; its history, demographics, methodology, successes, failures and challenges for the new millennium."

Lecture given Wednesday, February 23, 2000, 11:00 AM at Abilene Christian University: "One congregation's efforts at evangelizing Hispanics along the South Texas-Mexican border; its history, demographics, methodology, successes, failures and challenges for the new millennium."

Lecture given Wednesday, February 23, 2000, 3:30 PM at Abilene Christian University: "One congregation's efforts at evangelizing Hispanics along the South Texas-Mexican border; its history, demographics, methodology, successes, failures and challenges for the new millennium."

SEU is studied in SOI transistors and circuits with various body tie structures. The importance of impact ionization effects, including single-event snapback, is explored. Implications for hardness assurance testing of SOI integrated circuits are discussed.

Both the 316L stainless steel and Hastelloy{reg_sign} C-22 gave satisfactory corrosion performance in the simulated test environments. They were subjected to 100 day weight loss corrosion tests and electrochemical potentiodynamic evaluation. This activity supports confirmation of the design basis for the materials of construction of process vessels and equipment used to handle the feed to the LAW-melter evaporator. BNFL process and mechanical engineering will use the information derived from this task to select material of construction for process vessels and equipment.

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

Weekly newspaper from Wylie, Texas that includes local, state and national news along with advertising.