Oldenburg, Universiẗat, Diss., 2001.

Thesis (M.A.)--Liberty University, 2008. / Includes bibliographical references.

Thesis (Th. M.)--Dallas Theological Seminary, 2002. / Includes bibliographical references (leaves [62]-66).

Thesis (Th. M.)--Dallas Theological Seminary, 2002. / Includes bibliographical references (leaves [62]-66).

Thesis (Th. M.)--Dallas Theological Seminary, 2002. / Includes bibliographical references (leaves [62]-66).

Made available in DSpace on 2016-04-28T20:15:23Z (GMT). No. of bitstreams: 1 2003-Anselmo Afonso Golynski.pdf: 830387 bytes, checksum: 5f01749f12aaea6f6f65d51724969296 (MD5) Previous issue date: 2003-02-27 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / A hundred chicken of the breeds Rubro negra and Hubbard were necropsied with medium age of 65 days e medium weight of 2 kg. These chickens were utilized for the evaluation of the anthelmintic activity of four species of plants, three cultivated and one native, that can be utilized, in the future, for the control of helminths in an organic production system. The plant extract was used as suspension and ground, administered in the stomach or put together with the food for chicken naturally infected with the most frequent parasites. The doses utilized were 0,5; 1 and 2 g/kg/pv for Carapa guianensis (Andiroba) and 3/kg/pv for Mentha piperita, (Hortel?), Artemisia absinthium (Losna) and Chenopodium ambrosioides (Erva-de-Santa Maria) during three consecutive days, except for C. ambrosioides that was for five consecutive days. The anthelminthic effect of the plants was evaluated from the controlled method, with efficacy for Ascaridia galli of 90,45%, 76,7o% and 55,00% for erva-de-santa- maria, hortel? and extract hex?nic and andiroba at a dose rate of 2 g/kg/pv respectively. For the control of Raillietina sp. the efficacy was 87,93% and 62,90% for extract hex?nic and andiroba at a dose rate of 2g/kg/pv and hortel? respectively. About Heterakis gallinarum the plants had a moderate anthelmintic effect, the extract hex?nic the andiroba at a dose rate of 1g and 2g/kg/day had 29,09% and 55,45%. For the species Oxyspirura mansoni, Tetrameres confusa and Capillaria sp., there was no anthelmintic efficacy by the plants. / Foram necropsiadas 100 frangos das linhagens Rubro negra e Hubbard com idade m?dia de 65 dias e peso m?dio de 2kg. Essas aves foram utilizadas para avalia??o da atividade anti-helm?ntica de quatro esp?cies de plantas sendo tr?s cultivadas e uma nativa, que poder?o ser utilizadas no futuro para o controle de helmintos dentro de um sistema de produ??o org?nico. O extrato vegetal foi empregado sob a forma de suspens?o e triturada, administrada p?r via intrag?strica ou incorporada a ra??o em 0,5, 1 e 2g/kg/ peso vivo para Carapa guianensis (Andiroba) e 3g/kg para Mentha piperita, (Hortel?), Artemisia absinthium (Losna) e Chenopodium ambrosioides (Erva-de-Santa Maria) durante tr?s dias consecutivos, com exce??o da planta C. ambrosioides que foi de cinco dias consecutivos, em frangos naturalmente infectados com os principais helmintos de galinhas. O efeito anti-helm?ntico exercido pelas plantas foi avaliado pelo m?todo controlado, registrando-se os seguintes resultados em termos de efic?cia m?dia para A. galli 90,45%, 76,70% e 55,00% para erva-de-santa-maria, hortel? e extrato hex?nico de andiroba, respectivamente. Para o controle Raillietina sp 87,93% e 62,90% para extrato hex?nico de andiroba e hortel? respectivamente. Com rela??o ao Heterakis gallinarum as plantas tiveram um efeito anti-helm?ntico moderado, o extrato hex?nico de andiroba na dosagem de 1g e 2g/kg/peso vivo obtiveram percentuais de 29,09% e 55,45%, respectivamente. Para as esp?cies de Oxyspirura mansoni, Tetrameres confusa e Capillaria sp, n?o foi observada nenhuma atividade anti-helm?ntica pelas plantas testadas.

This thesis considers three separate but connected problems regarding energy networks: the load flow problem, the optimal power flow problem, and the islanding problem. All three problems are non-convex non linear problems, and so have the potential of returning local solutions. The goal of this thesis is to find solution methods to each of these problems that will minimize the chances of returning a local solution. The thesis first considers the load ow problem and looks into a novel approach to solving load flows, the Holomorphic Embedding Load Flow Method (HELM). The current literature does not provide any HELM models that can accurately handle general power networks containing PV and PQ buses of realistic sizes. This thesis expands upon previous work to present models of HELM capable of solving general networks efficiently, with computational results for the standard IEEE test cases provided for comparison. The thesis next considers the optimal power flow problem, and creates a framework for a load flow-based OPF solver. The OPF solver is designed with incorporating HELM as the load flow solver in mind, and is tested on IEEE test cases to compare it with other available OPF solvers. The OPF solvers are also tested with modified test cases known to have local solutions to show how a LF-OPF solver using HELM is more likely to find the global optimal solution than the other available OPF solvers. The thesis finally investigates solving a full AC-islanding problem, which can be considered as an extension of the transmission switching problem, using a standard MINLP solver and comparing the results to solutions obtained from approximations to the AC problem. Analysing in detail the results of the AC-islanding problem, alterations are made to the standard MINLP solver to allow better results to be obtained, all the while considering the trade-off between results and elapsed time.

Urban cycling is gaining popularity worldwide. Inadequate local and international guidelines on street cycling have contributed to a significant increase in road traffic, including increased accidents involving cyclists. In parallel, worldwide, safety data indicates that low-income countries have a high average rate of traflic fatalities (27,5 deaths per 100,000 population), more than three times higher compared to high-income countries (8,3 deaths per 1000.000 population) [1]. Another study found that safety and security factors have not been sufficiently addressed in previous studies regarding bicycle mobility. These factors seem to be more relevant in developing countries than developed ones, and more research is needed [2]. ... [From: Introduction]

Made available in DSpace on 2016-04-28T20:16:26Z (GMT). No. of bitstreams: 1 2008- Maria Zenaide de Lima Moreno Fernandes.pdf: 4713412 bytes, checksum: 57a28d8e279fb4420bec3cd0b2754889 (MD5) Previous issue date: 2008-02-21 / The pharmacological tests were conducted from March 2004 to January 2007 in the Annex to the Biot?rio Experimental Center of Agricultural Sciences (CCA) at the Universidade Federal of Piau? (UFPI). The plant material was collected in the states of Piau? and Maranh?o, and identified by a boatanist from the Graziela Barroso Herbarium (CCN/UFPI). It was determined the antihelmintic activity in vitro of aqueous (AE) and ethanolic (EE) extracts of the plants Annona squamosa, Hymenea courbaril, Operculina macrocarpa, Simarouba versicolor and Scoparia dulcis on Ascaridia galli and in vivo on the nematodes Ascaridia galli and Heterakis gallinarum. The in vitro tests were performed in adults helminth, male/female, collected the small intestine of chiken necropsied. Parasites were placed in Petri plates, divided into groups of ten/plates with three replicates for each concentration. These contain the extracts in volumes of 2, 4, 8, 16 and 32mL plus of 58, 56, 52, 44 and 28 mL of the Tyrode solution completing a volume of 60 mL/plate. The plates were incubated in B.O.D. at 37 ? C (? 1) and observed each 24 h, totaling 96 h. In this period there was the percentage of mortality and were considered dead those parasites with loss of motility after mild pressure. In vivo assays anthelmintic activity used up 108 adult chicken, with average weight of 1.5 kg, divided in 14 test groups of six animals. We used one positive control group (piperazine tetrahidrate), three negative controls groups: distilled water for aqueous extract and DMSO and Tween 80 to ethanolic extract, a total of 18 groups. The results were evaluated by analysis of variance of the average percentage of mortality over time (SAEG and SAS). The higher percentage of in vitro mortality test on the A. galli were registered as AE's sumidade florida of S. dulcis and A. squamosa being 30.7% and 66.7% respectively, while the EE was more effective for the H. courbaril, stem from the S. dulci; O. macrocarpa and S. versicolor with percentage of 70.7%, 46.0%, 38.7% and 26.7%, respectively. In vivo tests in the AE of A. squamosa presented the greatest percentage of elimination of A. galli (38.95%). The AE also was the most effective for sumidade florida, stem and root of S. dulcis and for the S. versicolor removing 28.68%, 21.38% 36.23% and 19.32%, respectively. The plants O. macrocarpa and H. courbaril showed no significant difference (P> 0.05) between the percentage of extracts with the elimination for AE of 23.64% and 24.5% and the EE of 22.4% and 27.03% respectively. In tests with H. gallinarum the percentage of elimination were insignificant for most plants, where only the S. versicolor had percentuals elimination of more expressive with 20.22% for EA and 29.15% for EE and for A. squamosa, confirming in vitro results, AE had his best action with 20.60% of elimination. These results suggest that although the percentage of elimination of the test in vivo have been lower than in vitro test, they confirmed that the A. galli was more sensitive to treatment that H. gallinarum probably because this parasite stay at cecum and the substances responsible for action on the A. galli were present mostly in aqueous fraction and the H. gallinarum in alcoholic fraction. / Os ensaios farmacol?gicos foram conduzidos de mar?o de 2004 a janeiro de 2007 no Anexo do Biot?rio Experimental do Centro de Ci?ncias Agr?rias (CCA) da Universidade Federal do Piau? (UFPI). A mat?ria vegetal foi coletada nos Estados do Piau? e Maranh?o e identificadas no Herb?rio Graziela Barroso (UFPI). Determinou-se a atividade anti-helm?ntica in vitro dos extratos aquosos (EA) e etan?licos (EE) das plantas Annona squamosa, Hymenea courbaril, Operculina macrocarpa, Simarouba versicolor e Scoparia dulcis sobre Ascaridia galli e in vivo sobre os nemat?ides Ascaridia galli e Heterakis gallinarum. Os testes in vitro foram realizados em helmintos adultos, machos/f?meas, coletadas do intestino delgado de aves necropsiadas. Os parasitos foram colocados em placas de Petri, divididos em grupos de dez/placa com tr?s repeti??es para cada concentra??o. Estas continham os extratos nos volumes de 2, 4, 8, 16 e 32 mL acrescidos de 58, 56, 52, 44 e 28 mL da solu??o de Tyrode , completando um volume final de 60 mL/placa. As placas foram incubadas em B.O.D. a 37?C (?1) e observadas a cada 24 h. totalizando 96 h. Neste per?odo verificou-se o percentual de mortalidade, sendo considerados mortos aqueles com perda de motilidade ap?s leve press?o. Na avalia??o da atividade anti-helm?ntica in vivo utilizou-se 108 aves adultas, com peso m?dio de 1,5 kg, divididas em grupos de seis animais, sendo constitu?dos 14 grupos testes, um controle positivo (piperazina tetrahidratada), tr?s grupos controles negativos: ?gua destilada para o extrato aquoso e DMSO e Tween 80 para o extrato etan?lico, num total de 18 grupos. Os resultados foram avaliados por meio da an?lise de vari?ncia do percentual m?dio de mortalidade ao longo do tempo (SAEG e SAS). Os maiores percentuais de mortalidade obtidos no teste in vitro sobre A. galli foram registrados no EA da sumidade florida de S. dulci e de A. squamosa sendo 30,7% e 66,7%, respectivamente. Quanto ao EE este foi mais eficaz para H. courbaril, caule da S. dulci; O. macrocarpa e S. versicolor com percentuais de 70,7%; 46,0%; 38,7% e 26,7%, respectivamente. Nos testes in vivo o EA de A. squamosa foi o que apresentou maior percentual de elimina??o de A. galli (38,95%). O EA tamb?m foi o mais eficaz para a sumidade florida, caule e raiz de S. dulci e para S. versicolor eliminando 28,68%, 21,38%, 36,23% e 19,32%, respectivamente. As plantas O. macrocarpa e H. courbaril n?o apresentaram diferen?a significativa (P>0,05) entre os extratos com percentuais de elimina??o para o EA de 23,64% e 24,5% e para o EE de 22,4% e 27,03%, respectivamente. Nos testes com H. gallinarum os percentuais de elimina??o foram insignificantes para maioria das plantas, onde apenas S. versicolor teve percenturais de elimina??o mais expressivos com 20,22% para o EA e 29,15% para o EE e ainda, a A. squamosa, que confirmando os testes in vitro teve no EA sua melhor a??o com 20,60% de elimina??o. Estes resultados sugerem que embora os percentuais de elimina??o do teste in vivo tenham sido inferiores ?queles obtidos no teste in vitro , eles confirmaram que A. galli foi mais sens?vel aos tratamentos que H. gallinarum provalmente pela localiza??o do segundo (ceco) e que as subst?ncias respons?veis pela a??o sobre A. galli estavam presentes na sua maioria na fra??o aquosa e sobre H. gallinarum na fra??o alco?lica.

No description available.