3,994 research outputs found
A new prey record and range extension for Hyperaspis paludicola Schwarz and a new prey record for Microweisea misella (LeConte) (Coleoptera: Coccinellidae)
The miscanthus mealybug, Miscanthicoccus miscanthi (Takahashi) (Hemiptera: Pseudococcidae), is newly reported as prey for the lady beetle Hyperaspis paludicola Schwarz (Coleoptera: Coccinellidae) at the Regan National Airport, Washington, DC (northern range extension). A new armored scale prey, Diaspidiotus ancyclus (Putnam) (Hemiptera: Diaspididae), for the lady beetle Microweisea misella (LeConte) (Coleoptera: Coccinellidae) is recorded. A range extension for Hyperaspis paludicola is reported
Henri Temianka Correspondence; (lte)
This collection contains material pertaining to the life, career, and activities of Henri Temianka, violin virtuoso, conductor, music teacher, and author. Materials include correspondence, concert programs and flyers, music scores, photographs, and books.https://digitalcommons.chapman.edu/temianka_correspondence/3066/thumbnail.jp
Henri Temianka Correspondence; (davidson)
This collection contains material pertaining to the life, career, and activities of Henri Temianka, violin virtuoso, conductor, music teacher, and author. Materials include correspondence, concert programs and flyers, music scores, photographs, and books.https://digitalcommons.chapman.edu/temianka_correspondence/1794/thumbnail.jp
A Tale of Two Impostors: SN2002kg and SN1954J in NGC 2403
We describe new results on two supernova impostors in NGC 2403, SN 1954J(V12)
and SN 2002kg(V37). For the famous object SN 1954J we combine four critical
observations: its current SED, its Halpha emission line profile, the Ca II
triplet in absorption in its red spectrum, and the brightness compared to its
pre-event state. Together these strongly suggest that the survivor is now a hot
supergiant with T ~ 20000 K, a dense wind, substantial circumstellar
extinction, and a G-type supergiant companion. The hot star progenitor of V12's
giant eruption was likely in the post-red supergiant stage and had already shed
a lot of mass. V37 is a classical LBV/S Dor variable. Our photometry and
spectra observed during and after its eruption show that its outburst was an
apparent transit on the HR Diagram due to enhanced mass loss and the formation
of a cooler, dense wind. V37 is an evolved hot supergiant at ~10^6 Lsun with a
probable initial mass of 60 -80 Msun.Comment: To appear in the Astrophysical Journa
Atmospheric marine boundary layer measurements in the vicinity of San Nicolas Island during CEWCOM-78
This is a report on the boundary layer aspects of the NPS participation in CEWCOM-78. The primary purpose of the experiment was to determine how representative San Nicolas Island is of an open ocean marine boundary layer and to examine the validity of boundary layer measurements at the NRL tower on the NW tip of the island. Under favorable wind conditions (NW) the turbulence and profile structure of the boundary layer near SNI was characteristic of typical marine conditions. A comparison of simultaneous measurements at the NRL tower and the R/V ACANIA indicated considerable shoreline influence on the velocity fluctuations (U* or epsilon) and the mean wind speed (U) but essentially no influence on temperature fluctuations (CT2). Using the bulk method to calculate T* and xi from the ACANIA data, the actual measurements of CT2 could be predicted to within about a factor of twoNaval Air Systems Command (AIR 3706)
Washington, DC and Naval Ocean Systems Center (EOMET).http://archive.org/details/atmosphericmarin00fairN00019-78-WR-81002, N66001-78-WR-00156NAApproved for public release; distribution is unlimited
Panel III: Congressional Control of the Administration of Government: Hearings, Investigations, Oversight, and Legislative History
My remarks will be the first on the panel to address the problems of legislative history. We have heard two quite illuminating discussions of congressional oversight activities, with which I largely agree philosophically. When one then reaches the questions of why is this happening, and whether anything can be done about it, the issues become more difficult. My remarks address some complications that may arise from the current distaste for legislative history that may make the oversight problem a little bit worse
Suppression of inhomogeneous broadening in rf spectroscopy of optically trapped atoms
We present a novel method for reducing the inhomogeneous frequency broadening
in the hyperfine splitting of the ground state of optically trapped atoms. This
reduction is achieved by the addition of a weak light field, spatially
mode-matched with the trapping field and whose frequency is tuned in-between
the two hyperfine levels. We experimentally demonstrate the new scheme with Rb
85 atoms, and report a 50-fold narrowing of the rf spectrum
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