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  • 1
    Electronic Resource
    Electronic Resource
    Sex Pheromone of the Peach Aphid, Tuberocephalus momonis, and Optimal Blends for Trapping Males and Females in the Field (2000)
    Springer
    Journal of chemical ecology 26 (2000), S. 601-609 
    Details
    ISSN: 1573-1561
    Keywords: Aphid ; sex pheromones ; Tuberocephalus momonis ; Lachnus tropicalis ; Myzus lythri ; Myzus dycei ; Myzus persicae ; attraction ; gynoparae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Chemical analysis of the volatiles released by sexual females (oviparae) of the peach aphid, Tuberocephalus momonis, identified two ubiquitous aphid sex pheromone components, (4aS,7S,7aR)-nepetalactone and (4aS,7S,7aR)-nepetalactol, in a ratio of 4 : 1. In field trials in Korea, employing traps releasing the two compounds in differing ratios, the most effective sex pheromone blend for trapping male T. momonis was found to be 85 : 15 nepetalactone–nepetalactol. Surprisingly, large numbers of presexual females (gynoparae) of this species were also collected when the catching rates were highest. In addition to T. momonis, over 20 other species of aphids were caught, particularly Myzus lythri, M. dycei, Lachnus tropicalis and M. persicae, in descending order of abundance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005415919226
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Controlled Dephasing of an Electron Interferometer with a Path Detector at Equilibrium (2012)
    American Physical Society (APS)
    Details
    Publication Date: 2012-12-19
    Description: Author(s): E. Weisz, H. K. Choi, M. Heiblum, Yuval Gefen, V. Umansky, and D. Mahalu Controlled dephasing of electrons, via “which path” detection, involves, in general, coupling a coherent system to a current driven noise source. However, here we present a case in which a nearly isolated electron puddle within a quantum dot, at thermal equilibrium and in millikelvin range temperatu... [Phys. Rev. Lett. 109, 250401] Published Tue Dec 18, 2012
    Keywords: General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 3
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    Laser-Induced Incandescence Calibration via Gravimetric Sampling (1995)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Various beam imaging and/or sheet forming optics delivered light at 1064 nm from a pulsed Nd:YAG laser for use either as a beam of 3 mm radius or as a laser sheet. Imaging measurements were performed with a grated intensified array camera equipped with an ultraviolet f4.5 lens and a 40 mm extension tube. Point measurements were performed using an ultraviolet 250 mm focal length lens to collect and focus the laser induced incandescence (LII) signal into a 1 meter long quartz optical fiber which directed the LII signal to a 1/4 meter monochromator. An aperture preceding the lens restricted the signal collection region to 1 cm along the laser beam at the center of the gravimetric chimney. Signals from the PMT were processed by a boxcar integrator whereas the images were captured digitally using a frame-grabber with 16 MByte of on-board memory. Both 'point' and planar measurements were made with detector gates of 250 ns to minimize possible morphology bias in collection of the LII signal. Additionally, the imaging measurements were performed with broadband spectral collection of the LII signal to maximize the signal and again minimize any potential effects of morphology dependent heating and/or cooling rates. Digital delay generators controlled the firing of he laser, detector gates and data acquisition. Neutral density filters were used for both sets of measurements to maintain signal levels within linear dynamic ranges of the detectors, the range being determined prior to experiments.
    Keywords: Inorganic and Physical Chemistry
    Type: NASA-CR-202088 , NAS 1.26:202088
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Laser-induced incandescence calibration via gravimetric sampling (1996)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Absolute calibration of laser-induced incandescence (LII) is demonstrated via comparison of LII signal intensities with gravimetrically determined soot volume fractions. This calibration technique does not rely upon calculated or measured optical characteristics of soot. The variation of the LII signal with gravimetrically measured soot volume fractions ranging from 0.078 to 1.1 ppm established the linearly of the calibration. With the high spatial and temporal resolution capabilities of laser-induced incandescence (LII), the spatial and temporal fluctuations of the soot field within a gravimetric chimney were characterized. Radial uniformity of the soot volume fraction, f(sub v) was demonstrated with sufficient averaging of the single laser-shot LII images of the soot field thus confirming the validity of the calibration method for imaging applications. As illustration, instantaneous soot volume fractions within a Re = 5000 ethylene/air diffusion flame measured via planar LII were established quantitatively with this calibration.
    Keywords: Inorganic and Physical Chemistry
    Type: NASA-CR-198495 , NAS 1.26:198495 , E-9551-1 , Central States Section Meeting; Apr 20, 1995 - Apr 23, 1995; San Antonio, TX; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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