Generation of long time creep data of refractory alloys at elevated temperatures Eleventh quarterly report, 26 Dec. 1965 - 26 Mar. 1966

Creep tests of arc-cast and vapor deposited tungsten, molybdenum alloys, niobium, and tantalum base alloys for use in advanced power system

Generation of long time creep data on refractory alloys at elevated temperatures Quarterly report, 26 Oct. - 26 Dec. 1966

Long-time creep data on refractory metal alloys for advanced space power system

Generation of long time creep data of refractory alloys at elevated temperatures

Creep test data on refractory metal alloys for use in spacecraft power supply system

Generation of long time creep data on refractory alloys at elevated temperatures eighth quarterly report

Creep resistance of refractory alloys at elevated temperatures under ultrahigh vacuum condition

Generation of long time creep data on refractory alloys at elevated temperatures Twelfth quarterly report, 26 Mar. - 26 Jun. 1966

Long time creep data on refractory alloys at high temperature

Mechanical behavior of tantalum-base T-111 alloy at elevated temperature

Mechanical behavior of tantalum T-111 alloy at high temperatures and ultrahigh vacuu

Elevated temperature fatigue of TZC MOLYBDENUM alloy under high frequency and high vacuum conditions

Elevated temperature fatigue of TZC molybdenum alloy determined in high frequency and high vacuum test

Generation of long time creep data of refractory alloys at elevated temperatures Quarterly report, 26 Jul. - 26 Sep. 1966

Long time creep test data on molybdenum base alloys, tantalum base alloys, and vapor deposited tungste

Arkansas\u27 Incendiary Wildfire Record: 1983-1987

All wildfire reports from lands protected by the Arkansas Forestry Commission for the calendar years 1983 through 1987 were studied. The number of wildfires steadily increased from 2,185 in 1983 to 4,150 in 1987, burning a total of 27,146 hectares in 1987. Incendiarism on forested lands in 1987 comprised 77% of the total fires and 84% of the area burned. Incendiarism was responsible for 40% of all fires and 60% of the area burned in 1983, but increased to 54% of all fires and 69% of the area burned in 1987. In 1987, 80% of all incendiary fires on industry lands were started by local residents. Most incendiary fires occurred on Class 3 (52%) and Class-2 (27%) fire-danger class-days. More incendiary fires (64%) occurred during the spring fire season (January through June). The general public reported 66% the non-incendiary fires, but only 56% of the incendiary-caused fires. Implications of these findings for wildfire prevention programs are discussed

Amine-Linked Single Molecule Circuits: Systematic Trends Across Molecular Families

A comprehensive review is presented of single molecule junction conductance measurements across families of molecules measured while breaking a gold point contact in a solution of molecules with amine end groups. A theoretical framework unifies the picture for the amine-gold link bonding and the tunnel coupling through the junction using Density Functional Theory based calculations. The reproducible electrical characteristics and utility for many molecules is shown to result from the selective binding between the gold electrodes and amine link groups through a donor-acceptor bond to undercoordinated gold atoms. While the bond energy is modest, the maximum force sustained by the junction is comparable to, but less than, that required to break gold point contacts. The calculated tunnel coupling provides conductance trends for all 41 molecule measurements presented here, as well as insight into the variability of conductance due to the conformational changes within molecules with torsional degrees of freedom. The calculated trends agree to within a factor of two of the measured values for conductance ranging from 10-7 G0 to 10-2 G0, where G0 is the quantum of conductance (2e2/h).Comment: Invited paper for forthcoming special issue of Journal of Physics: Condensed Matte