964 resultados para Chivers, T. H. (Thomas Holley), 1809-1858.
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Pós-graduação em Filosofia - FFC
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This paper analyzes the character Bigger Thomas Native Son’s American novel published in 1940 by African-American author Richard Wright. Through this character we try to study more the post-slavery racial issue in a country where racial segregation was legally sustained and how this issue was reflected in society and identity formation of their native sons African-American
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The aim of this work was to evaluate the types of resistance of soybean genotypes to the attack of Spodoptera cosmioides (Walker, 1858), under laboratory conditions. Plants of the soybean genotypes, IAC 100, Dowling, PI 227687, PI 274454, BR 16, IGRA RA 626 RR, PI 227682, BRSGO 8360, IGRA RA 516 RR e P 98Y11 RR, were cultivated in vases and placed in a greenhouse in order to have their leaves used afterwards in free-choice and no-choice no-preference for feeding tests and evaluation of the biological parameters of S. cosmioides fed on the genotypes. For free-choice no preference for feeding test, 10 leaf discs were prepared and placed in Petri dishes equidistantly among themselves, and then two recently-hatched caterpillar per genotype were release in the center of the plate. The same test was performed for third instar larvae, so that one caterpillar per genotype was used. In non-choice test, only one genotype was used in each Petri dish, where two recently-hatched or one third instar caterpillars were released, respectively. For both tests, the attractiveness was assessed at 1, 3, 5, 10, 15, 30, 60, 120, 360, 720 and 1440 minutes after the release of the insects. In addition, the leaf area consumed was evaluated. Randomized blocks design and completely randomized design were used for free-choice and non-choice tests, respectively, with 10 replications. In biology test, recently-hatched larvae were transferred to Petri dishes with leaves of the genotypes, evaluating the period of larvae, pupae and overall (larvae + pupae), viability of larvae, pupae and overall, weight of 12 days-old larvae and 24 hours-old pupae and longevity of the adults. Completely randomized design was used for this test, with 30 replications. Genotypes IGRA RA 516 RR and IGRA RA 626 RR were the least and the most consumed by recently-hatched larvae of S. cosmioides, respectively, in non-choice non-preference for feeding test. Genotypes PI 274454 and PI 227687 were...
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A importncia dos predadores vertebrados na dinâmica das redes tróficas e na teoria da cascata trófica destaca o papel dos peixes, na determinação da composição e na dinâmica da comunidade planctnica. O estudo teve como objetivo verificar experimentalmente o possível impacto que as relações tróficas dos peixes Serrapinus notomelas e Serrasalmus maculatus podem produzir sobre o fitoplâncton e o zooplâncton presentes em lagoas marginais no trecho de montante do reservatrio de Rosana, SP/PR. Um experimento utilizando-se de mesocosmos, com quatro tratamentos (controle; S. notomelas; S. maculatus; S. notomelas e S. maculatus) e três repetições, foi conduzido “in situ” no reservatrio de Rosana. Analisando a dieta dos peixes, e a variação do zooplâncton e da clorofila a (biomassa de fitoplâncton) durante o período do estudo, pode-se constatar como a presença desses peixes, tanto separadamente quanto juntos, afeta a dinâmica do sistema. A análise do zooplâncton, ao final dos tratamentos com peixes, mostrou que havia uma quantidade menor de indivíduos comparado ao controle, indicando que houve de fato predação. Em relação à variação de clorofila a, notamos que houve um aumento em todos os tratamentos, o que seria esperado se o zooplâncton estivesse diminuído (cascata trófica – efeito “top-down”). Porém, no tratamento em que S. notomelas estava presente, essa clorofila a deveria (mas não ocorreu) ter decrescido, já que foi encontrada uma grande quantidade de algas na análise do conteúdo estomacal dessa espécie. No tratamento em que as duas espécies de peixes estavam presentes pode-se inferir que, ao sofrer uma pressão de predação, S. notomelas prefere desenvolver uma estratgia de fuga a uma de busca por alimento. Os dados indicam que houve problemas metodológicos, como o pouco tempo para aclimatação, especialmente... (Resumo completo, clicar acesso eletrônico abaixo)
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Conselho Nacional de Desenvolvimento Cientfico e Tecnológico (CNPq)
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1. 1. The oxygen consumption in workers of two simpatric leaf cutting ants, Atta laevigata and Atta sexdens rubropilosa was measured at different temperatures. 2. 2. In the temperature range between 5-35°C, with 5°C increments, the respiratory rates increased with temperature, but the R-T curves of both ants showed neither a marked drop at the low end nor a break at the high end; except between 30 and 35°C. 3. 3. The respiratory rates of A. s. rubropilosa were higher than those of A. laevigata and in the midrange of temperatures, the rates of A. laevigata increased faster than those of A. s. rubropilosa. 4. 4. Q10 values did not indicate regions of compensation for temperature in both ants, but suggested that adjustments may occur at high temperatures (25-35°C), as expected for tropical ants. 5. 5. Temperature variations did not alter significantly the slope of the curve relating oxygen consumption and body weight in both species. © 1982.
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1. 1. The respiration of the different castes of two species of leaf-cutting ants, Atta laevigata and Atta sexdens rubropilosa was measured in both workers and sexed forms. 2. 2. The respiratory rates (μl O2/mg(live)/hr) were, in A. laevigata, 0.644 (gardeners), 0.594 (cutters), 0.354 (soldiers), 0.233 (males) and 0.085 (females); in A. s. rubropilosa, 0.803 (gardeners), 0.748 (cutters), 0.510 (soldiers), 0.375 (males) and 0.274 (females), significantly higher than A. laevigata. 3. 3. All castes considered, the b-values of the equation relating oxygen consumption and weight in A. laevigata (0.53) were significantly different from that in A. s. rubropilosa (0.73). © 1981.
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Conselho Nacional de Desenvolvimento Cientfico e Tecnológico (CNPq)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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We provide conservative translations from propositional modal logic KT (the simplest normal alethic logic) into propositional modal logic KD (the simplest normal deontic logic), and from this into the propositional modal logic K (the simplest normal logic simpliciter). Following an idea discussed by Jaakko Hintikka, these conservative translations are based on the third formulation of Kantian categorical imperative, the formulation of the Kingdom of Ends.
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The Martha Thomas Fitzgerald Papers consist of biographical data, correspondence, minutes, newspaper clippings, memoranda, reports, and photographs (of particular interest are the many photographs of rural S.C. school houses in the 1920s). The collection pertains to Mrs. Fitzgerald’s work with the South Carolina Department of Education, the South Carolina House of Representatives, and her work with various civic organizations such as the Altrusa Club, the League of Women Voters, the Daughters of American Colonists, United Daughters of the Confederacy (UDC), Business and Professional Women’s Club (BPW), Delta Kappa Gamma, South Carolina Vocational Rehabilitation, and the Salvation Army. There is also information on the Status of Women Commission Council on Aging, agriculture, Queens College, University of South Carolina, Winthrop University, Columbia University, public health, South Carolina history, City of Columbia, South Carolina, and Richland County, South Carolina. Correspondents include Strom Thurmond and three letters from John F. Kennedy when he was senator. Mrs. Fitzgerald was the first woman elected to the South Carolina House of Representatives in a general election.
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The Thomas Belue Collection consists of the diary of Thomas Belue of Union County, South Carolina. He enrolled as a private in the Confederate Army in Co. F, Captain C.W. Boyd’s , 15th SCV. The diary covers August, 1861 to September, 1863, and May 1864. Belue describes battles fought in South Carolina, Georgia,Tennessee, and Virginia, mileage covered, camp life and events that occurred during his time in the army. The collection also includes biographical information, genealogical information, a partial transcript of the diary, and copies of Belue’s military records. In addition there is a tintype in a case of Belue in his uniform, two copies of the tintype, and photographs of his gravestone at Gilead Baptist Church Cemetery in Union County, South Carolina.
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The Thomas Spratt Memoir consists of a typescript account titled Recollections of the Spratt Family, detailing the history of the Spratt family of York County, South Carolina from the arrival in America of Thomas Spratt from County Down, Ireland, in 1740 to 1876.
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Thomas Smithwick Gettys (1912-2003) was a lawyer and U.S. Representative for the Fifth Congressional District of South Carolina. The Thomas Smithwick Gettys Papers consist of reports, resolutions, correspondence, news releases, government publications, and newspaper clippings, relating to Getty’s efforts to enlarge and develop the Cowpens Battlefield Site of Cherokee County, South Carolina. Correspondents include Ernest Hollings, Donald Russell, John P. Saylor, W.S. Stuckey, Jr., Roy A. Taylor, Mark W. Clark, Wayne Aspinall, and Stewart Udall.
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The Thomas Jefferson Johnston Papers consists of the Civil War diary of Thomas Jefferson Johnston (1837-1894) from 1861 to August 7, 1864. Also included is a transcription of the journal as well as contextual notes of what was occurring during the war at large by Robert James Johnston (1945-) (great grandson of Thomas Jefferson Johnston) in 1992.