488 research outputs found
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 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
EACOF: A Framework for Providing Energy Transparency to enable Energy-Aware Software Development
Making energy consumption data accessible to software developers is an
essential step towards energy efficient software engineering. The presence of
various different, bespoke and incompatible, methods of instrumentation to
obtain energy readings is currently limiting the widespread use of energy data
in software development. This paper presents EACOF, a modular Energy-Aware
Computing Framework that provides a layer of abstraction between sources of
energy data and the applications that exploit them. EACOF replaces platform
specific instrumentation through two APIs - one accepts input to the framework
while the other provides access to application software. This allows developers
to profile their code for energy consumption in an easy and portable manner
using simple API calls. We outline the design of our framework and provide
details of the API functionality. In a use case, where we investigate the
impact of data bit width on the energy consumption of various sorting
algorithms, we demonstrate that the data obtained using EACOF provides
interesting, sometimes counter-intuitive, insights. All the code is available
online under an open source license. http://github.com/eaco
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
Electronics and Chemistry: Varying Single Molecule Junction Conductance Using Chemical Substituents
We measure the low bias conductance of a series of substituted benzene
diamine molecules while breaking a gold point contact in a solution of the
molecules. Transport through these substituted benzenes is by means of
nonresonant tunneling or superexchange, with the molecular junction conductance
depending on the alignment of the metal Fermi level to the closest molecular
level. Electron-donating substituents, which drive the occupied molecular
orbitals up, increase the junction conductance, while electron-withdrawing
substituents have the opposite effect. Thus for the measured series,
conductance varies inversely with the calculated ionization potential of the
molecules. These results reveal that the occupied states are closest to the
gold Fermi energy, indicating that the tunneling transport through these
molecules is analogous to hole tunneling through an insulating film.Comment: 14 pages, 4 figure
Formation and Evolution of Single Molecule Junctions
We analyze the formation and evolution statistics of single molecule
junctions bonded to gold electrodes using amine, methyl sulfide and dimethyl
phosphine link groups by measuring conductance as a function of junction
elongation. For each link, maximum elongation and formation probability
increase with molecular length, strongly suggesting that processes other than
just metal-molecule bond breakage play a key role in junction evolution under
stress. Density functional theory calculations of adiabatic trajectories show
sequences of atomic-scale changes in junction structure, including shifts in
attachment point, that account for the long conductance plateau lengths
observed.Comment: 10 pages, 4 figures, submitte
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
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