Raymond E. Gold

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The effects of light and host volatiles on teliospore germination in Uromyces appendiculatus var. appendiculatus were studied. I. Light intensities ranging 15-26000 lux supported teliospore germination and basidiospore formation. The optimum light intensity was 17000 lux under the described conditions. Light-dark alternation was necessary for teliosp.ore(More)
The effects of aging and temperature on teliospore germination in Uromyces appendiculatus var. appendiculatus were studied. 1. Indoor storage was good at ~ 4 QC in the dirk. Under these conditions spores remained dormant for ~ 9 mo, but thereafter germination gradually increased to a maximum (~ 63 %) after 36 moo Spores .9tored outdoors showed a marked(More)
The diffusion of ions towards or away from the inner side of the nodal membrane in preparations, the cut ends of which are placed in various media, was investigated. The ion concentration changes were calculated by numerical solution of the unidimensional electrodiffusion equation under a variety of media compositions, axoplasmic diffusion coefficients, and(More)
The heliosphere instrument for spectrum, composition, and anisotropy (HISCALE) recorded the fluxes of low-energy ions and electrons (> 50 kiloelectron volts) when Ulysses crossed the southern solar polar region and revealed that the large-scale structure of the heliosphere to at least approximately -75 degrees was significantly influenced by the(More)
We report studies of two large solar energetic particle (SEP) events on Nov. 4 and 6, 1997 that were observed using advanced energetic particle detectors on the ACE and the Wind spacecraft. Both events showed enriched FeiO, and had a -I MeV In HetHe ratio= 2.1 x 10·, 4 times the coronal value. The Nov. 6 event had exceptionally hard spectra, with much(More)
We present ACE observations for the six-day period encompassing the Bastille Day 2000 solar activity. A high level of transient activity at 1 AU, including ICME-driven shocks, magnetic clouds, shock-accelerated energetic particle populations, and solar energetic ions and electrons, are described. We present thermal ion composition signatures for ICMEs and(More)
We have surveyed the 0.1–10 MeV nucleon 1 abundances of heavy ions from He through Fe in 64 large solar energetic particle (LSEP) events observed on board theAdvancedComposition Explorer from1997November through 2005 January. Our main results are (1) the 0.5–2.0MeV nucleon 1 He/He ratio is enhanced between factors of 2– 150 over the solar wind value in 29 ((More)
Measurements of the hot plasma environment during the Ulysses flyby of Jupiter have revealed several new discoveries related to this large rotating astrophysical system. The Jovian magnetosphere was found by Ulysses to be very extended, with the day-side magnetopause located at approximately 105 Jupiter radii. The heavy ion (sulfur, oxygen, and sodium)(More)