2,616 research outputs found
What is the Justification For a Chair of Missions in This Situation?
https://place.asburyseminary.edu/firstfruitspapers/1120/thumbnail.jp
A Critique of The Vocation of the Missionary
https://place.asburyseminary.edu/firstfruitspapers/1112/thumbnail.jp
Meeting NSW electricity needs in a carbon constrained world: lowering costs and emissions with distributed energy
Communities in developed nations expect their governments to ensure the reliable supply of electricity. Reflecting these expectations, the NSW Government established an Inquiry into Electricity Supply in NSW in 2007, chaired by Professor Anthony Owen (the Owen Inquiry). This Inquiry was asked in particular to review the need and timing for new baseload supply. The Owen Inquiry concluded that there was a potential shortfall in baseload supply from 2013/14, and recommended that planning for new power stations should commence immediately as the lead time for a coal-fired power station could be 67 years. Since the Owen Inquiry, the projections for both electricity consumption and electricity generation have been modified significantly (Transgrid 2008), such that the findings of the Inquiry warrant substantial reconsideration. It is beyond the scope of this report to review the merits of the privatisation plan proposed by the Owen Inquiry. However, it may well prove fortuitous for NSW that the Owen Inquirys recommendations were not adopted, as this means there is an opportunity to reconsider the options for securing the states electricity future
Raman G and D band in strongly photoexcited carbon nanotubes
We observe clear differences in the spectral shift of the Raman D and G bands when heating double wall carbon nanotubes through intense photon irradiation and by varying the temperature in a thermostat. These spectral differences are attributed to modifications of the defect induced double-resonance Raman process, and are consistent with Stokes–anti-Stokes anomalies observed for single and double wall carbon nanotubes, not present in graphite. We find that the Raman intensity for double wall carbon nanotubes increases superlinearly in the red spectral region and sublinearly in the UV spectral region
Formation of misfit dislocations in strained-layer GaAs/In<sub>x</sub>Ga<sub>1–x</sub>As/GaAs heterostructures during postfabrication thermal processing
It is demonstrated that relaxation of GaAs/InxGa1–xAs/GaAs strained-layer heterostructures can be brought about by postfabrication thermal processing. Misfit dislocations are introduced into the structure during thermal processing, even though the thickness of the strained layer is well below the critical value predicted by the Matthews–Blakeslee model. The misfit dislocations are observed to be of both 60° mixed type and 90° pure edge type. As no relaxation occurs at the lower temperatures encountered during fabrication by molecular-beam epitaxy, it can be inferred that the critical condition for the formation of misfit dislocations is not only a function of strained-layer thickness and composition, but also of temperature. This observation cannot be accounted for by differential thermal expansion or diffusion across the strained-layer interfaces, but the temperature-dependent Peierls force may offer an explanation. The high temperature required to produce relaxation of these structures suggests that they are sufficiently thermally stable for most practical applications
Raman G band in double-wall carbon nanotubes combining p doping and high pressure
We use sulfuric acid as pressure medium to extrapolate the G-band position of the inner and outer tubes of double-wall carbon nanotubes. Keeping the G-band position of the inner and outer tubes constant, we can determine the fraction of double-wall and single-wall tubes in samples containing a mixture of the two. A-band-related electronic interwall interaction at 1560 cm−1 is observed, which is associated with the outer tube walls. This band is observed to shift with pressure at the same rate as the G band of outer tubes and is not suppressed with chemical doping. Differences in the interwall interaction is discussed for double-wall carbon nanotubes grown by the catalytic chemical-vapor method and double-wall carbon nanotubes obtained through
transformation of peapods
The size effect in the mechanical strength of semiconductors and metals: Strain relaxation by dislocation-mediated plastic deformation
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