252 research outputs found
Hamner, James T. - An inaugural dissertation on symptomatology
No full textHandwritten inaugural dissertation on symptomology by J. T. Hamner, of Alabama.Inaugural dissertation; no. 211
John T Hamner
No full textJohn T. Hamner, columnist and editor for the Sarasota Herald-Tribune's Manatee County edition
Maureen Louise Hamner, August 1944 - February 2021
No full textMaureen passed away peacefully at home in Palo Alto with her husband of fifty-eight years, Richard T. Hamner, at her side
Letter re: student
No full textLetter from W.T. Hamner, principal of the TCU Preparatory Department, to a Mr. Williams regard his son, Albert, a student at the school
Letter re: student
No full textLetter from W.T. Hamner, principal of the TCU Preparatory Department, to a Mr. Williams regard his son, Albert, a student at the school
Invoice for taxes from W. T. Hamner, Tuscaloosa County, Alabama, to A. C. Hargrove, August 9, 1867
No full textThe Predisposed Agency of Genomic Fiction
No full textHamner's essay analyzes Richard Powers's novel Generosity: An Enhancement as an example of genomic fiction, a genre-bending science fiction subgenre focused on relationships between biology and identity. Prefacing this study with brief readings of novels by Michael Crichton and evangelical author Angela Hunt, the essay reflects extensively on the metaphors and mythologies involved in contemporary genomics. Here Powers has the distinct advantage of being one of only eight individuals, as of 2008, to have had his entire genome sequenced. Hamner interweaves essays about such experiences from Powers and others with questions about the extent to which genomics can be expected to yield new self-understanding. The essay's broadest argument is that by juxtaposing fictional creativity and genomic modification, Generosity effectively illustrates the need for bridge-building across science-religion, religion-humanities, and humanities-science divides. Specifically, Powers reveals the extent to which genes are gaining sacrosanct status in U.S. culture, and in response offers a postsecular, metanarratival science fiction that contextualizes some of the more inflated rhetoric. Defending scientific research but denouncing its metamorphosis into techno-transcendent spectacle, Powers's work aligns fiction and evolution as processes of painfully slow, bottom-up “compositing,” wherein complexity emerges from simplicity, purpose appears in apparent randomness, and agency persists in tension with both inherited and environmental determinants. Ultimately, Hamner's essay shows that beneath questions about genomic identity lie even more profound ones about the nature and purposes of narrative.</jats:p
Add-Ran Christian University faculty
No full textCharles Ivan Alexander, W. T. Hamner and others450px x 450p
Nanda-Hamner curves show huge latitudinal variation but no circadian components in Drosophila montana photoperiodism
No full textAbstractInsect species with a wide distribution offer a great opportunity to trace latitudinal variation in the photoperiodic regulation of traits important in reproduction and stress tolerances. We measured this variation in the photoperiodic time-measuring system underlying reproductive diapause in Drosophila montana, using a Nanda-Hamner (NH) protocol. None of the study strains showed diel rhythmicity in female diapause proportions under a constant day length (12 h) and varying night lengths in photoperiods ranging from 16 to 84 h at 16°C. In the northernmost strains (above 55°N), nearly all females entered diapause under all photoperiods and about half of them even in continuous darkness, while the females of the southern strains showed high diapause proportions only in the circadian 24 h photoperiod. Significant correlation between the strains’ mean diapause proportions in ≥ 24 h photoperiods and critical day length (CDL; half of the females enter diapause) suggests at least partial causal connection between the traits. Interestingly, females of the northern strains entered diapause even in ≤ 24 h photoperiods, where the night length was shorter than their critical night length (24 h — CDL), but where the females experienced a higher number of Light:Dark cycles than in 24 h photoperiods. NH experiments, performed on the control and selection lines in our previous selection experiment, and completed here, gave similar results and confirmed that selection for shorter, southern-type CDL decreases female diapausing rate in non-circadian photoperiods. Overall, our study shows that D. montana females measure night length quantitatively, that the photoperiodic counter may play a prominent but slightly different role in extra short and extra long photoperiods and that northern strains show high stability against perturbations in the photoperiod length and in the presence of LD cycles. These features are best explained by the quantitative versions of the damped external coincidence model.Abstract
Insect species with a wide distribution offer a great opportunity to trace latitudinal variation in the photoperiodic regulation of traits important in reproduction and stress tolerances. We measured this variation in the photoperiodic time-measuring system underlying reproductive diapause in Drosophila montana, using a Nanda-Hamner (NH) protocol. None of the study strains showed diel rhythmicity in female diapause proportions under a constant day length (12 h) and varying night lengths in photoperiods ranging from 16 to 84 h at 16°C. In the northernmost strains (above 55°N), nearly all females entered diapause under all photoperiods and about half of them even in continuous darkness, while the females of the southern strains showed high diapause proportions only in the circadian 24 h photoperiod. Significant correlation between the strains’ mean diapause proportions in ≥ 24 h photoperiods and critical day length (CDL; half of the females enter diapause) suggests at least partial causal connection between the traits. Interestingly, females of the northern strains entered diapause even in ≤ 24 h photoperiods, where the night length was shorter than their critical night length (24 h — CDL), but where the females experienced a higher number of Light:Dark cycles than in 24 h photoperiods. NH experiments, performed on the control and selection lines in our previous selection experiment, and completed here, gave similar results and confirmed that selection for shorter, southern-type CDL decreases female diapausing rate in non-circadian photoperiods. Overall, our study shows that D. montana females measure night length quantitatively, that the photoperiodic counter may play a prominent but slightly different role in extra short and extra long photoperiods and that northern strains show high stability against perturbations in the photoperiod length and in the presence of LD cycles. These features are best explained by the quantitative versions of the damped external coincidence model
Hamner, J. T.
No full textSee entry in Elmore County, volume 1, page 21: https://digital.archives.alabama.gov/digital/collection/voter1867/id/181
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