12,522 research outputs found
A new species of Acmaeodera (Coleoptera: Buprestidae) from Big Bend National Park, Texas : with synonymy for other species occurring in the United States
Acmaeodera tiquilia Westcott and Barr, new species, from Big Bend National Park, Texas is described, figured, and discussed in considerable detail, particularly in relation to the similar and partially sympatric A. recticollis Fall. A neotype is designated for A. quatuordecimspilota Obenberger and that species is synonymized with A. ornata (Fabricius). Additionally, A. gibbula gila Knull is synonymized with A. gibbula LeConte; A. nautica Van Dyke is synonymized with A. simulata Van Dyke
Research in the development of an improved multiplier phototube Final report
Cascade aperture design, gas pressure effects, gain calibration, and photon counting efficiency of multiplier phototub
The anthropic principle and the mass scale of the Standard Model
In theories in which different regions of the universe can have different
values of the the physical parameters, we would naturally find ourselves in a
region which has parameters favorable for life. We explore the range of
anthropically allowed values of the mass parameter in the Higgs potential,
. For , the requirement that complex elements be formed
suggests that the Higgs vacuum expectation value must have a magnitude less
than 5 times its observed value. For , baryon stability requires that
, the Planck Mass. Smaller values of may or may not be
allowed depending on issues of element synthesis and stellar evolution. We
conclude that the observed value of is reasonably typical of the
anthropically allowed range, and that anthropic arguments provide a plausible
explanation for the closeness of the QCD scale and the weak scale.Comment: 28 pages, LaTeX. No changes from version originally submitted to
archive, except that problem with figure file has been correcte
New synonymies \u3ci\u3esensu\u3c/i\u3e Barr for the checkered beetle subfamily Hydnocerinae (Coleoptera: Cleroidea: Cleridae)
Eleven new synonymies involving the checkered beetle subfamily Hydnocerinae (Coleoptera: Cleridae) are proposed
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