Richard Dodson

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Aim Our main goals were to develop a map of the life zones for the conterminous United States, based on the Holdridge Life Zone system, as a tool for ecosystem mapping, and to compare the map of Holdridge life zones with other global vegetation classification and mapping efforts. Location The area of interest is the forty-eight contiguous states of the(More)
We report on our experiences using the Metsähovi Radio Observatory’s (MRO) VLBI Standard Interface (VSI, Whitney 2002) recorder in a number of astronomical applications. The PC-EVN device is a direct memory access (DMA) interface which allows 512 megabit per second (Mbps) or better recording to “off the shelf” PC components. We have used this setup to(More)
The next-generation space VLBI mission, VSOP-2, is expected to provide unprecedented spatial resolutions at 8.4, 22, and 43 GHz. In this report, phase referencing with VSOP-2 is examined in detail based on a simulation tool called ARIS. The criterion for successful phase referencing was to keep the phase errors below one radian. Simulations with ARIS reveal(More)
Yeast aldolase was purified partially by Warburg and Christian (I), who found that it was inhibited by metal-binding agents and could be reactivated by addition of Fe++, Co++, or Zn++ ions. Later, this enzyme was further purified, treated with a chelating agent, and crystallized as a mercury salt (2). In this form, the enzyme was still active when tested in(More)
Pulsars are rotating neutron stars, sweeping the emission regions from the magnetic poles across our line of sight. Isolated neutron stars lose angular momentum through dipole radiation and (possibly) particle winds, hence they slow down extremely steadily, making them amongst the most reliable timing sources available. However, it is well known that(More)