Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 86 for “"Dusk"”.
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F-region Dusk Ion Temperature Spikes at the Equatorward Edge of the High Latitude Convection Region
By examining continuous data from the Poker Flat Incoherent Scatter Radar (PFISR) in Poker Flat, Alaska, short-lived enhancements in the F-region ion temperature, or "Tᵢ spikes", were discovered in the evening while the radar was on the equatorward edge of the high latitude convection region. These …
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Evaluation of Methodology Use to Estimate Population Size, Sex and Age Ratios, and Mortality of White-tailed and Mule Deer in the Missouri River Breaks Region of South Dakota
… = -2.055 +Group Size (0.211) - Behavior (2.869). Dusk and dawn surveys were conducted to compare fawn:doe and buck:doe ratios estimated from spotlight surveys. Number of deer observed during spotlight and dusk/dawn surveys were different for white-tailed deer (P= 0.025) and all deer combined …
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Understanding Behavior and Nest Box Usage in Three Species of Owl Monkeys: Azara's Owl Monkey (Aotus azarai), Spix's Owl Monkey (A. Vociferans) and Nancy's Owl Monkey (A. Nancymaae)
… allowing the owl monkeys to experience a "dusk" period in the lighting. While A. azarai spend more of their sleeping time in dense foliage in the wild compared to A. nancymaae and A. vociferans, in the current study, although they were provided with nest boxes meant to mimic this type of …
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Breeding Biology Of Chuck-Will's-Widows: Incubation, Brooding, And Provisioning Behavior And Characteristics Of Nest Sites
… males were only observed incubating eggs at dusk. </p> <p>Most incubation off-bouts occurred at dawn (N = 45 at six nests) and dusk (N = 48 at six nests) and averaged 35.0 min in duration (N = 104). Nightjars are visually oriented crepuscular and nocturnal insectivores so eggs are likely left …
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ASHRAF 'ALI THANAWI'S BIHISHTI ZEWAR: MUSLIM FEMALE PIETY UNDER THE DEOBANDI MOVEMENT IN BRITISH INDIA
… secular literature in Urdu produced during the dusk of imperialism in India. It concludes that female piety was similarly imagined by both the 'ulama and the secular writers during that era.
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Understanding Behavior and Nest Box Usage in Three Species of Owl Monkeys: Azara's Owl Monkey (Aotus Azarai), Spix's Owl Monkey (A. Vociferans) and Nancy's Owl Monkey (A. Nancymaae)
… allowing the owl monkeys to experience a "dusk" period in the lighting. While A. azarai spend more of their sleeping time in dense foliage in the wild compared to A. nancymaae and A. vociferans, in the current study, although they were provided with nest boxes meant to mimic this type of …
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Daily patterns of oviposition mediate sexual conflict in a polygynandrous mating system
… in the evening just prior to 'lights out' or dusk and continued above average for the first few hours of darkness. The absence of males affected the temporal pattern of oviposition, but not the overall daily rate of oviposition. In the absence of males, oviposition rates were above average in …
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PARALLEL ELECTRIC FIELD ON AURORAL MAGNETIC FIELD LINES
… In general, (phi)(,(PARLL)) is largest in the dusk to pre-midnight sector, smaller in the post-midnight to dawn sector, and smallest in the near noon sector during quiet and disturbed geomagnetic conditions; there is a steady dusk-dawn-noon asymmetry of the global (phi)(,(PARLL)) distribution. …
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Factors most closely explaining activity patterns and behavior of northern saw-whet owls in migratory stopover habitat
… how activity patterns (i.e., movements) in the dusk, dawn, and night were impacted by environmental covariates. Owls were most active at dusk and dawn and on warmer darker nights with light winds and no precipitation earlier in the fall season. NSWO are known to be very quiet during the …
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Investigation of the Signaling Mechanisms of the Pineal Hormone Melatonin in the in Vitro Rat Suprachiasmatic Nucleus
… slice during times restricted to subjective dusk and dawn advances the peak in firing rate by up to 4 h. This study showed that the shift induced by melatonin is dependent upon activation of protein kinase C (PKC). The necessity of PKC activation, however, does not rule out the involvement …
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Home Range and Nocturnal Activity of the Ozark Hellbender
… "home rock" and remained in that area until dusk.
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The maintenance of variation in Cyprinodontiformes
… match the daily blue-shift in light at dawn and dusk. LWS, RH2-1, RH2-2, and SWS2B (but not SWS1 or SWS2A) opsin gene expression was lowest at midnight and dawn and highest at midday and dusk, and the observed temporal shifts were many times larger than an accompanying difference in production of …
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Behavioral ecology of coral reef fishes at spawning aggregation sites
… reduce the mortality of propagules and adults. Dusk-spawning species generally did not respond to changes in flow direction and predator abundance, most likely due to their short spawning periods and the reduced predatory pressures that occurred at dusk. Tides did not seem to be used exclusively …
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Identifying Signatures of Plasma Waves and Reconnection Associated with Kelvin-Helmholtz Activity
… in the dawn flank plasma sheet compared to the dusk flank. However, the mechanisms responsible are still not entirely clear. Recent work has shown that reconnection in Kelvin-Helmholtz vortices can transport plasma into the magnetosphere. Previous studies have also shown that mode conversion at …
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