Made available in DSpace on 2014-12-17T15:03:30Z (GMT). No. of bitstreams: 1 AlexPF_DISSERT.pdf: 2326729 bytes, checksum: b6da1e51840804f205e268a56df90ca6 (MD5) Previous issue date: 2013-03-07 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The semiarid potiguar presents a quite discrepant. It is a region with one of the highest rates of artificial lake the world, but the policy of building dams to mitigate the problem of water scarcity does not solve, given that they have not demonstrated the ability to ensure supply human priority during periods of great drought and fail to solve the widespread demand existent in the semiarid. This work aims to present the optimal allocation of water, according to multiple uses and limited availability of water resources in the reservoir, from the simulation of the operation of the same, with the application of techniques to support decision making and performance evaluation alternatives for water use. The reservoir of Santa Cruz, the second largest reservoir of RN with storage capacity of approximately 600 million cubic meters, located about 20 km from the town of Apodi in RN, was conceived as a way to promote economic development in the region as well as the water supply of nearby towns. The techniques used are the simulation model of network flow ACQUANET and also the set of performance indicators. The results showed that the container has the capacity to serve up to 3,83m3/s flow required by existing uses, without any compromising the same. However, it was also observed that all anticipated future demands are implemented it will generate failures in meeting some uses / A regi?o do semi?rido potiguar apresenta um quadro discrepante, ? uma regi?o com um dos maiores ?ndices de a?udagem do mundo. Por?m a pol?tica de constru??o de a?udes para atenuar o problema da escassez de ?gua n?o resolve, haja vista que estes n?o t?m demonstrado capacidade de assegurar o abastecimento humano priorit?rio nos per?odos de grande estiagem. Este trabalho tem como objetivo apresentar a simula??o da opera??o do reservat?rio Santa Cruz, de acordo com os usos m?ltiplos e limitada disponibilidade de recursos h?dricos do reservat?rio, a partir da simula??o da opera??o do mesmo, com aplica??o de t?cnicas de apoio ? tomada de decis?o e consequentemente a avalia??o do desempenho das alternativas de uso da ?gua. O reservat?rio de Santa Cruz, o segundo maior reservat?rio do RN com capacidade de armazenamento de aproximadamente 600 milh?es de metros c?bicos, localizado cerca de 20 km da sede do munic?pio de Apodi no RN, foi concebido como forma de promover o desenvolvimento econ?mico da regi?o bem como o abastecimento de ?gua de munic?pios pr?ximos. As t?cnicas utilizadas s?o o modelo de simula??o de rede de fluxo ACQUANET, em que foram simulados os cen?rios criados de acordo com os usos existentes bem como os futuros, e tamb?m o conjunto de indicadores de desempenho. Os resultados mostraram que o reservat?rio tem a capacidade de atendimento at? 3,83m3/s de vaz?o requerida pelos usos existentes, sem que haja o comprometimento dos mesmos. Entretanto, foi observado tamb?m que se todas as demandas futuras entrarem em opera??o, isso vai acarretar falhas no sistema, dessa forma comprometendo e limitando os usos de menor prioridade, visto que os mesmos n?o ter?o sua demanda total satisfeitos

Made available in DSpace on 2014-12-17T15:34:46Z (GMT). No. of bitstreams: 1 AlanoAL_DISSERT.pdf: 625245 bytes, checksum: 758c6ad36203861c8f47bb2ac610a464 (MD5) Previous issue date: 2012-02-17 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / The production of forage grasses is directly related to the morphogenesis. The knowledge of the morphogenetic and structural variables of forage plants is important for determining appropriate conditions of grazing livestock to ensure efficient and sustainable. Thus the objective of this study was to evaluate morphogenetic and structural responses of three genera of grasses, Brachiaria, Panicum and Cenchrus in a cutting regime. The experimental design was randomized blocks with three replications and six treatments. After each section were evaluated for forage production, appearance and elongation rates of leaves and stem, phyllochron, final leaf length, number of living leaves, leaf lifespan, leaf senescence rate, tiller density and tiller dynamics. On forage yield the highest values were obtained in cultivars Xaraes, Piata and Massai. The tiller density was higher for cv Massai. It is concluded that the cultivars of Panicum and Brachiaria had a higher tillering dynamics in increasing the turnover rate of tissues that are indicators of forage production, assuming that the cultivars of these genera are predisposed to use forage in the Northeast / A produ??o das gram?neas forrageiras est? diretamente relacionada com a morfog?nese. O conhecimento das vari?veis estruturais e morfog?nicas das plantas forrageiras ? importante para a determina??o das condi??es do pasto adequadas para assegurar produ??o animal eficiente e sustent?vel. Com isso o objetivo deste trabalho foi avaliar as respostas morfog?nicas e estruturais de gram?neas de tr?s g?neros, Brachiaria, Panicum e Cenchrus em regime de corte. O delineamento utilizado foi em blocos ao acaso com tr?s repeti??es e seis tratamentos. Ap?s cada corte foram feitas avalia??es de produ??o de forragem, taxas de aparecimento e alongamento de folhas e colmo, filocrono, comprimento final da folha, n?mero de folhas vivas, dura??o de vida da folha, taxa de senesc?ncia de folhas, densidade populacional de perfilhos e din?mica de perfilhamento. Na produ??o de forragem os maiores valores foram obtidos nas cultivares Xara?s, Piat? e Massai. A densidade populacional de perfilhos foi maior para a cultivar Massai. Conclui-se que, as cultivares de Panicum e Brachiaria obtiveram uma maior din?mica no perfilhamento o que aumenta a velocidade de renova??o de tecidos que s?o indicadores da produ??o de forragem, admitindo que as cultivares avaliadas desses g?neros s?o forrageiras predispostas a utiliza??o na Regi?o Nordeste

Made available in DSpace on 2014-12-17T15:34:46Z (GMT). No. of bitstreams: 1 JoseAJ_DISSERT.pdf: 2198789 bytes, checksum: cfff0a35036e3279bf24509971f499d4 (MD5) Previous issue date: 2013-03-19 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This study aimed to evaluate the performance and profitability of Canind? goats kept under semi-intensive management in mix farming system. 84 animals were used, being 81 does e three bucks.. The means of fertility rate at parturition, prolificacy and percentages of pregnant, kid survival and reproductive rate were compared by Tukey test at significance level of 5.0%. The kid weights from birth to weaning were submitted to variance analysis considering sex and birth type and the means were compared by Tukey test at 5.0% of significance. The percentages of fertility rate by ultrassographic were 91.36 and parturition 74.84. The prolificacy was 1.53. Independently of sex the mortality rate of kids from birth to weaning was 12.3. The average weights of offspring were 2.11 and 1.92 kg and 6.74 and 6.84 kg for male and female offspring at birth and weaning, in this order. The average weights of kids, meaning PN, P28, P56, P63, in the first season of kidding were 2.11 ? 0.46 kg, 3.63 ? 1.04 kg, 5.96 ? 158 kg and 6.74 ? 1.79 kg. There was significant differences (P<0,05) only to birth weight of kids sons of buck 135. However, the fertility at parturition for first and second breeding seasons (BS) were 87.65 and 62.96, respectively (P<0.05). The prolificacy was 1.58 and 1.47 to first and second BS in this order. The percentages of offspring survival from birth to weaning, to first and second BS were 92.86 and 80.00, respectively. From the first BS the reproduction rate was 1.28 while in the second was 0.74. After weaning the duration of lactation was 104 days to first breeding parturition and 38 days in the second one. The total milk production was 853.50 kg. The kids weight gain was influenced by season of year, wet and dry and buck (P<0.05). Were concluded that the seasons of year when breeding season and parturition occur strongly affected the productive performance and profitability of production system / Objetivou-se avaliar o desempenho produtivo e a rentabilidade de caprinos da ra?a Canind?, mantidos em regime de manejo semi-intensivo sob sistema de explora??o misto. Foram usados 84 animais, sendo 81 matrizes e tr?s reprodutores. As m?dias inerentes ? fertilidade ao parto, a prolificidade e as taxas de prenhez, de sobreviv?ncia de crias e de reprodu??o foram comparadas pelo teste de Tukey ao n?vel de signific?ncia de 5,0%. Os pesos das crias, ao nascer, aos 28 dias e aos 56 dias foram submetidos ? an?lise de vari?ncia considerando o sexo e o tipo de nascimento e tiveram as m?dias comparadas pelo teste de Tukey a 5,0% de signific?ncia. Para as duas esta??es de monta, as porcentagens de fertilidade por ultrassografia e ao parto foram de 91,36 e 74,84, respectivamente. A prolificidade foi de 1,53. O desmame ocorreu aos 63 dias de idade. Os pesos m?dios das crias foram de 2,11 kg e 1,92 kg e 6,74 kg e 6,84 kg, para as crias machos e f?meas, ao nascer e ao desmame, nessa ordem. Na primeira esta??o de partos os pesos m?dios das crias, PN, P28, P56, P63, foram 2,11 ? 0,46 kg; 3,63 ? 1,04 kg; 5,96 ? 1,58 kg; 6,74 ? 1,79 kg. P<0,05 apenas no peso ao nascer das crias do reprodutor 153. As porcentagens de fertilidade ao parto, para primeira e segunda esta??o de monta foram de 87,65 e 62,96, respectivamente (P<0,05). A prolificidade para primeira foi de 1,58 enquanto que para a segunda 1,47. As porcentagens de sobreviv?ncia de crias do nascimento aos 63 dias de idade, para primeira e segunda esta??o de parto (EP) foram de 92,86 e 80,00, respectivamente. Na primeira EP a taxa de reprodu??o foi de 1,28 enquanto na segunda de 0,74. A dura??o da lacta??o foi de 104 dias na primeira EP e 38 dias na segunda. A produ??o total de leite foi de 853,50 kg. O ganho de peso das crias foi influenciado pela ?poca de nascimento e pelo reprodutor e as crias do reprodutor placa n?mero 128 apresentaram ganho superior (P<0,05). Conclui-se que a ?poca da esta??o de monta e de parto afeta o desempenho produtivo e a rentabilidade do sistema de produ??o

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-10-11T23:01:26Z No. of bitstreams: 1 ErmetonDuarteDoNascimento_TESE.pdf: 7719427 bytes, checksum: b84ff037c2d66bf7a8b825c76b7b9db3 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-10-18T00:19:26Z (GMT) No. of bitstreams: 1 ErmetonDuarteDoNascimento_TESE.pdf: 7719427 bytes, checksum: b84ff037c2d66bf7a8b825c76b7b9db3 (MD5) / Made available in DSpace on 2016-10-18T00:19:26Z (GMT). No. of bitstreams: 1 ErmetonDuarteDoNascimento_TESE.pdf: 7719427 bytes, checksum: b84ff037c2d66bf7a8b825c76b7b9db3 (MD5) Previous issue date: 2016-04-29 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A resist?ncia aos antimicrobianos se transformou num s?rio problema de sa?de p?blica mundial e v?rios ambientes aqu?ticos se apresentam contaminados por esses microrganismos. Entretanto, n?o h? dados sobre esse fen?meno para o semi?rido brasileiro. Sendo assim, este estudo teve como objetivo o isolamento e a identifica??o das bact?rias de import?ncia m?dica contaminantes de ambientes qu?ticos no semi?rido potiguar, a caracteriza??o da resist?ncia antimicrobiana, e a formula??o de propostas para educa??o em sa?de e a??es para vigil?ncia ambiental em sa?de. Com este prop?sito foram coletadas amostras de ?gua de quatro reservat?rios do semi?rido potiguar durante os per?odos seco e chuvoso. As amostras foram processadas e os microrganismos foram isolados e identificados seguindo orienta??es de bibliografias especializadas. Em seguida foram realizados os testes de sensibilidade antimicrobiana em disco difus?o, calculado o ?ndice de m?ltipla resist?ncia antibi?tica (MAR) e classificados os organismos com multipla resist?ncia ?s drogas (MDR). Tamb?m foram propostas a??es para preven??o e educa??o em sa?de, bem como para vigil?ncia ambiental em sa?de. Adicionalmente, foi avaliada, na Universidade de Minnesota, nos Estados Unidos, a influ?ncia da concentra??o do f?sforo em meio l?quido (caldo nutriente, C:P 100:1, 1000:1 e 100.000:1) sobre a expres?o fenot?pica da resist?ncia ? tetraciclina, ao cloranfenicol e a eritromicina, de 41 cepas bacterianas dos Estados Unidos utilizando a t?cnica da Concentra??o Inibit?ria M?nima (CIM) e da Concentra??o Bactericida M?nima (CBM). Ao todo foram isoladas 168 bact?rias, 56% no per?odo chuvoso, com 97,6% pertecentes ao grupo das Gram-negativas, com a Fam?lia Enterobacteriaceae apresentando a maior preval?ncia entre esse grupo (73,2%). 95,3% das bact?rias resistentes aos antimicrobianos foram isoladas durante o per?odo seco e o ?ndice MAR foi maior no reservat?rio Passagem das Tra?ras, com 56% de chance para que as bact?rias encontradas na ?gua desse reservat?rio procedam de uma fonte de contamina??o com maior risco para a sa?de humana. N?o houve diferen?a estat?stica da ocorr?ncia de g?neros e esp?cies bacterianos entre os per?odos seco e chuvoso e nem entre os reservat?rios, com p=0,255. Tamb?m n?o houve diferen?a estat?stica do ?ndice MAR entre os per?odos e os reservat?rios, com p=0,224. Quando avaliada a CIM, o meio com C:P de 100.000:1, considerado com a menor concentra??o de f?sforo, parece aumentar a sensibilidade das bact?rias ao cloranfenicol e a eritromicina quando comparado aos resultados do caldo nutriente para os mesmos antimicrobianos, com um p=0,023. Nas escolas que atendem as comunidades ribeirinhas usu?rias da ?gua dos reservat?rios, s?o propostas a??es de educa??o em sa?de que visem o levantamento de concep??es sobre o conhecimento do uso dos antimicrobianos e do surgimento da resist?ncia bacteriana a essas drogas, bem como o desenvolvimento de material para educa??o em sa?de. E no n?cleo de Vigil?ncia Ambiental em Sa?de da SESAP, s?o propostas a inclus?o das bact?rias resistentes aos antimicrobianos isoladas de ambientes aqu?ticos como indicadores de risco para a sa?de p?blica, a formula??o de pol?ticas p?blicas visando o controle das atividades que contaminam esses recursos com esses organismos e tamb?m o monitoramento peri?dico da ?gua dos diversos ambientes aqu?ticos. / Bacterial resistance to antimicrobials became a serious public health problem around the world, and different aquatic environments are contaminated with these organisms. However, there is no data about this phenomenon in the Brazilian semiarid region. Therefore, this study had as main the isolation and identification of contaminant harmful bacteria of potiguar semiarid aquatic environments, characterization of antimicrobial resistance, development of proposals in health education and actions for environmental health surveillance. With this purpose were collected water samples from four potiguar semiarid reservoirs during dry and rainy season. Those samples were analyzed and microorganisms were isolated and identified following specialized literature orientation. Then antimicrobials susceptibility disk diffusion test were performed, Multiple Antibiotic Resistance (MAR) index was calculated, and Multiple Drug Resistance (MDR) classification was used. Also were proposed actions for health prevention and education. In addiction, was evaluated, in Minnesota University/United States of America, the influence of phosphorus concentration in broth medium (Nutrient broth, 100:1, 1000:1 and 100.000:1 C:P ratio) over phenotypic resistance expression to tetracycline, chloramphenicol and erythromycin in 41 American aquatic bacterial strains by using Minimal Inhibitory Concentration (MIC) and Minimal Bactericidal Concentration (MBC) techniques. Altogether were isolated 168 bacteria from the Brazilian semiarid reservoirs, 56% in rainy season, with 97,6% from Gram-negative group, and 73,2% from Enterobacteriaceae Family. Ninety five point three percent of antimicrobial resistant bacteria were isolated during dry season and MAR index was higher for Passagem das Tra?ras reservoir, with 56% of chance that bacteria found in that reservoir has proceeded from high risk source of contamination for human health. There were no statistical differences of bacterial genera and species occurrence between dry and rainy season nor between reservoirs, with p=0,255. Also, there were no statistical differences in MAR index between seasons nor between reservoirs, with p=0,244. When MIC was evaluated, the 100.000:1 C:P ratio medium, considered the one with lower concentration of phosphorus, seemed to increase bacterial susceptibility to chloramphenicol and erythromycin when comparing to nutrient broth results for the same antimicrobials, with p=0,023. At schools that serve riverine communities water reservoirs user were proposed activities for health education aiming describe conceptions about antimicrobial use knowledge and the emergency of bacterial resistance to those drugs, as well as the development of materials for health education. At SESAP Environmental Health Surveillance group were proposed inclusion of antimicrobial resistant bacteria isolated in aquatic environments as indicator of risk for public health, as well as formulation of public policies to control activities that contaminate these sources with those organisms, and also the water periodic monitoring of several aquatic environments.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-01-10T12:50:17Z No. of bitstreams: 1 AlexandreDeOliveiraLima_TESE.pdf: 7736599 bytes, checksum: 3fd9e0107c2d70abcb3d0e9689d0714b (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-01-11T14:33:58Z (GMT) No. of bitstreams: 1 AlexandreDeOliveiraLima_TESE.pdf: 7736599 bytes, checksum: 3fd9e0107c2d70abcb3d0e9689d0714b (MD5) / Made available in DSpace on 2017-01-11T14:33:58Z (GMT). No. of bitstreams: 1 AlexandreDeOliveiraLima_TESE.pdf: 7736599 bytes, checksum: 3fd9e0107c2d70abcb3d0e9689d0714b (MD5) Previous issue date: 2013-01-30 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Apesar do n?mero significativo de barragens constru?das nos ?ltimos anos no Brasil e mesmo em outros pa?ses, s?o poucos os estudos t?cnicos que d?o suporte a este crescimento. Com o objetivo de propor uma nova abordagem metodol?gica para o processo de loca??o e monitoramento de barragens subterr?neas, em condi??es de clima semi?rido, foram realizados estudos em duas sub-bacias hidrogr?ficas (do rio das Cobras e Pau Lavrado) ambas situadas no semi?rido do Estado do Rio Grande. Nesta nova abordagem foram realizados estudos de caracteriza??o f?sica (morfometria e perfil longitudinal) e de caracteriza??o hidroqu?mica (?guas superficiais e subterr?neas). Adicionalmente, foi empregado o Radar de Penetra??o no Solo (GPR) para realizar o imageamento do corpo aluvionar e, posteriormente, gerar o modelo virtual 3D das ?reas imageadas. Uma vez que um dos principais problemas identificados nesta regi?o foi a saliniza??o, a avalia??o mensal da salinidade e da varia??o do n?vel da ?gua foram tamb?m monitorados em tr?s barragens subterr?neas constru?das em 2010. As informa??es sobre a din?mica erosional e deposicional ao longo da bacia permitiram indicar os locais de instala??o e o tipo mais adequado de barragem subterr?nea a ser constru?da (submers?vel ou submersa). O estudo hidroqu?mico indicou que a precipita??o pluviom?trica, a posi??o espacial e a din?mica de renova??o da ?gua nos reservat?rios foram os fatores que mais influenciaram na sua salinidade. Por outro lado, o uso do GPR possibilitou a visualiza??o do contato do corpo aluvionar e de seu embasamento, levando a indica??o dos melhores locais para coloca??o do septo imperme?vel, aliando a menor profundidade de escava??o a maior capacidade de acumula??o h?drica, permitindo, assim, o c?lculo do volume do aluvi?o. Pode-se concluir que o monitoramento das barragens subterr?neas permitiu avaliar a influ?ncia da integra??o das ?guas superficiais e subterr?neas, principalmente relacionado ? presen?a de a?udes ? montante das barragens subterr?neas, na capacidade de recarga e na qualidade das ?guas armazenadas nas barragens subterr?neas. / Despite the significant number of underground dams built in the recent years in Brazil and other countries, few studies provide technical support to this growth. In order to suggest a new methodological approach to the process of location and monitoring of underground dams in semi-arid weather conditions, this study aimed to evaluate two watershed sub-basins, located at the river of Cobras and the river of Pau Lavrado), both situated in the semi-arid state of Rio Grande do Norte. To reach this goal physical (morphologic and longitudinal profiles) and hydro-chemical characterization (superficial or underground water) were performed. Additionally, the imaging process of the alluvial body by using a Ground Penetration Radar (GPR) was assessed to generate a 3D virtual model of the area. Because one of the main problems verified in this region is the water salinization, a monthly assessment of the salinity and the variation of the water level at three underground dams were also performed. The obtained data about the erosional and depositional dynamics presented on the entire basin allowed to determine not only the best place to build an underground dam, but also to determine which kind underground dam should be built (submersible or submerged). The results revealed that the hydro-chemical rainfall, the spatial position and the dynamic exchanges of the underground dams were the main factors that influence their degree of salinization. On the other hand, the GPR imaging enabled the visualization of both the contact and the alluvial foundation from the underground dam leading to the indication of the best place for placement of the waterproof septum. Such technique allows one to combine the lowest depth of excavation to build an underground dam that generates the highest capacity of water accumulation and, therefore, calculates its volume of alluvium. As a conclusion, the monitoring of the underground dams revealed to be of utmost importance to evaluate the influence of the superficial and underground water not only on the recharging of the underground dams, but also on their water quality.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-04-17T22:58:07Z No. of bitstreams: 1 MiguelFernandesKolodiuk_TESE.pdf: 13494777 bytes, checksum: 2da489b36148192cd5cdbdaf6a82c58d (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-04-20T18:25:19Z (GMT) No. of bitstreams: 1 MiguelFernandesKolodiuk_TESE.pdf: 13494777 bytes, checksum: 2da489b36148192cd5cdbdaf6a82c58d (MD5) / Made available in DSpace on 2017-04-20T18:25:19Z (GMT). No. of bitstreams: 1 MiguelFernandesKolodiuk_TESE.pdf: 13494777 bytes, checksum: 2da489b36148192cd5cdbdaf6a82c58d (MD5) Previous issue date: 2016-10-31 / A Caatinga ocupa cerca de 800.000 km2, caracterizada por escassez de precipita??o, altas temperaturas, variabilidade na sazonalidade clim?tica com forte intercala??o de anos de secas e de inunda??es. Quanto a aspectos fitofision?micos e morfoclim?ticos, apresenta pelo menos duas fisionomias conhecidas na literatura, Caatinga stricto sensu e Caatinga lato sensu. A primeira corresponde ?s ?reas situadas na Depress?o Sertaneja Setentrional, com vegeta??o arbustiva e temperaturas mais elevadas; j? a Caatinga lato sensu compreende ?reas de vegeta??o arb?rea e arb?reo-arbustivas, sobre topos das chapadas e serras com mais de 500 m de altitude, e temperaturas mais amenas. Estudos cl?ssicos destacam a exist?ncia de padr?o de distribui??o relictual para algumas esp?cies de lagartos, que parecem ser exclusivas de ?reas de Caatinga lato sensu. Nesse contexto, este trabalho teve como objetivo geral analisar a composi??o e a estrutura da comunidade de r?pteis Squamata e estudar os comportamentos de termorregula??o e de forrageamento das esp?cies de lagartos tropidur?deos da Caatinga lato sensu, da Serra de Santana, Lagoa Nova, RN. Foram realizadas quatros excurs?es de 20 dias cada ? ?rea de estudo, sendo duas no ano de 2014 (esta??es chuvosa e seca), e duas no ano de 2015 nos mesmos meses (mar?o e setembro) da coleta do ano anterior. Em 2014, foram registrados e/ou coletados esp?cimes de Squamata por procura ativa e armadilhas de queda, quando foi registrado para cada esp?cime ativo o h?bitat, microh?bitat e hor?rio de atividade. Em 2015 foram realizadas observa??es comportamentais para os lagartos tropidur?deos atrav?s de sess?es focais para registros dos comportamentos de termorregula??o e de forrageamento. Foram coletadas 34 esp?cies de Squamata e a curva de rarefa??o n?o atingiu ass?ntota, indicando a possibilidade de existirem mais esp?cies na ?rea. Destacam-se as presen?as de esp?cies de distribui??o relictual em ?reas de Caatinga, quais sejam, Acratosaura mentalis, Enyalius bibronii e Anotosaura vanzolinia. Comparando a composi??o das esp?cies de lagartos com as de outras ?reas de Caatinga, constatou-se a forma??o de tr?s grupos: esp?cies de ?rea florestada (brejos de altitude); de Caatinga lato sensu e de Caatinga stricto sensu. A an?lise do modelo nulo demonstrou que esta comunidade de lagartos est? estruturada quanto ao uso do espa?o, indicando influ?ncia significativa de fatores ecol?gicos contempor?neos sobre essa taxocenose. O uso n?o aleat?rio do componente espacial indicou presen?a de intera??es competitivas que influenciam a sele??o dos habitats e microhabitats. Os resultados do comportamento termorregulat?rio mostraram que nesta Caatinga lato sensu as duas esp?cies de tropidur?deos n?o diferem em comportamento termorregulat?rio, embora T. semitaeniatus se exponha mais ao sol do que T. hispidus durante a esta??o chuvosa. Quanto ao forrageamento, as duas esp?cies se comportaram de maneira similar na esta??o seca, mudando de estrat?gia durante a esta??o chuvosa e, comparando com a Caatinga stricto sensu, as duas esp?cies forrageiam de forma mais ativa durante a esta??o chuvosa na Caatinga lato sensu. Confirmam-se, portanto, as presen?as de esp?cies relictuais e de estrat?gias comportamentais diferentes para os lagartos tropidur?deos de Caatinga lato sensu. / The Caatinga occupies an area of approximately 800,000 km2, and is characterized by rainfall scarcity, high temperatures, and variability in climatic seasonality, with strong intercalation of dry and floody years. Among these phytophysiognomic and morphoclimatic aspects, it is worth noting that this area has at least two landscapes known in the literature: Caatinga stricto sensu and Caatinga lato sensu. The Caatinga stricto sensu refers to areas located in the Northern Country Depression (Depress?o Sertaneja Setentrional), with shrubby vegetation and higher temperatures. On the other hand, the Caatinga lato sensu comprises areas of arboreal-bushy vegetation located on the tops of plateaus and mountains with more than 500 m altitude, thus presenting milder temperatures. Classical studies highlight the existence of a pattern of relictual distribution for some lizard species of the Caatingas, which seem to be unique from areas of Caatinga lato sensu. Four 20-day trips were carried to the study area, two in 2014 and two in 2015, in March (rainy season) and September (dry season). In 2014, Squamata specimens were registered and/ or collected through active search and pitfall traps, and for each active specimen, habitat, microhabitat and activity hour were recorded. In 2015, behavioral observations of tropidurid lizards were carried out through focal sessions to analyze the themoregulatory and foraging behaviors and compare them with populations of a Caatinga stricto sensu area. A total of 34 species of Squamata was recorded, and the rarefaction curve did not reach an asymptote, indicating the possibility of more species in the area. Noteworthy is the presence of species with relictual distributions, such as Acratosaura mentalis, Enyalius bibronii and Anotosaura vanzolinia. Comparing the composition of the lizard species with other Caatinga sites, we observed the formation of three groups: communities from forested highlands; from areas of Caatinga lato sensu, and from areas of Caatinga stricto sensu. A null model analysis showed that the studied lizard community is structured on the spatial niche axis, indicating a significant influence of contemporary ecological factors on this assemblage. The non-random use of space by the lizard species indicates the presence of competitive interactions that influence the selection of habitats and microhabitats used. In general, the two Tropidurus species did not differ in their thermoregulatory behavior, although T. semitaeniatus exposed yourself to the sun more than T. hispidus during the rainy season. Regarding the foraging behavior, T. hispidus and T. semitaeniatus behaved similarly in the dry season, changing strategy during the rainy season. The two species foraged more actively during the rainy season in the studied site when compared with an area of Caatinga stricto sensu. In conclusion, the data obtained in this study confirm the presence of relictual species and the presence of different behavioral strategies for tropidurid lizards in area of Caatinga lato sensu.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-01T22:43:12Z No. of bitstreams: 1 LuanaCarlosFerreira_DISSERT.pdf: 5657543 bytes, checksum: dff08fca22763e7a525e0ad5eecf67e9 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-14T22:00:34Z (GMT) No. of bitstreams: 1 LuanaCarlosFerreira_DISSERT.pdf: 5657543 bytes, checksum: dff08fca22763e7a525e0ad5eecf67e9 (MD5) / Made available in DSpace on 2017-11-14T22:00:34Z (GMT). No. of bitstreams: 1 LuanaCarlosFerreira_DISSERT.pdf: 5657543 bytes, checksum: dff08fca22763e7a525e0ad5eecf67e9 (MD5) Previous issue date: 2017-03-06 / A desertifica??o ? um problema ambiental grave cujo enfrentamento depende da compreens?o de suas complexas rela??es ecol?gicas, sociais e clim?ticas pela ci?ncia. No Brasil, ela atinge o Semi?rido, amea?ando a fertilidade dos solos e a biodiversidade da Caatinga, bioma que s? existe no pa?s e ainda n?o ? completamente conhecido pela ci?ncia. A continua??o do processo pode ainda por em risco a seguran?a alimentar e h?drica e provocar a migra??o de milhares de pessoas. As iniciativas governamentais de combate ao problema, no entanto, n?o passaram do ?mbito da formula??o de pol?ticas ? a??o, e a sociedade tamb?m parece n?o perceber a urg?ncia da quest?o. Uma das formas de promover o engajamento social ? a divulga??o de informa??es pelos meios de comunica??o de massa, mas suas narrativas podem estar marcadas por interesses pol?ticos e econ?micos. Assim sendo, o objetivo geral deste trabalho ? analisar a produ??o cient?fica e a narrativa da m?dia impressa brasileira sobre desertifica??o. Nessa perspectiva, inicialmente foi realizado um panorama da produ??o cient?fica sobre o tema atrav?s de an?lise de artigos cient?ficos publicados sobre desertifica??o no Semi?rido brasileiro entre 2005 e 2014. Em seguida, not?cias e reportagens publicadas pelo jornal impresso Folha de S. Paulo entre 1994 e 2015 foram submetidas ? an?lise de conte?do. A produ??o cient?fica aumentou ao longo do tempo, mas a maior parte n?o ? acess?vel nas principais bases de dados internacional e nacional, possui car?ter disciplinar e n?o vem sendo continuada ao longo do tempo. J? o jornal impresso raramente fala sobre desertifica??o, e quando o faz ? de maneira descontextualizada ou catastr?fica, sem espa?o para o contradit?rio, dando pouca voz aos cientistas e quase nenhuma ? sociedade. ? necess?rio, portanto, investir mais em pesquisas multidisciplinares e de longo prazo que compreendam o problema e busquem solu??es na sua integralidade; ao mesmo tempo incentivar a participa??o social nas discuss?es cient?ficas, na formula??o de pol?ticas e na gest?o de estrat?gias de combate ? desertifica??o atrav?s da divulga??o de informa??o contextualizada, cr?tica e continuada. / Being a serious environmental issue, the addressing of desertification relies on scientific understanding of its complex ecological, social and climatic relations. Caatinga is a unique biome in the Semi-arid region of Brazil still uncharted by science and its soil fertility and biodiversity face serious threat as desertification advances and jeopardizes food and water resources for thousands of people, which leads to migration influx. Governmental response has not been able to yield substantial actions to tackle the issue and society unfortunately seems not to sense the urge of such matter. One way to promote social engagement about the subject has to do with propagating related information in spite of political and economical interests lurking the narrative of mass media in Brazil. The focus of this paper is to analyze the narrative of Brazilian press regarding desertification, also including a view on science press. A panorama of scientific production was made through scientometrical analysis of scientific papers published between 2005-2014 and content analyses of news and reports printed and published byFolha de S?o Paulo from 1994 through 2015. An increase of scientific production for disciplinary purposes was noticed, although discontinued eventually as access to most papers on major national and international databases remain unreachable. On printed newspaper, approach to the subject is rare and often happens in a decontextualized or catastrophic-toned manner, not allowing space for opposite views, hence offering little voice to scientists and almost none to society. Thus, it becomes necessary to invest in long term multidisciplinary, solution-oriented, researches that deepen comprehension of subject matter and enable society to take part in scientific discussion as well as formulating policies and managing strategies to tackle desertification with the aid of propagating continuous, critical and contextualized information.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-01-20T22:46:00Z No. of bitstreams: 1 GR?NIVEL MOTA DA COSTA (1).pdf: 2200564 bytes, checksum: 3828a984c3a6ee25ef6f2d93f10132ad (MD5) / Made available in DSpace on 2016-01-20T22:46:00Z (GMT). No. of bitstreams: 1 GR?NIVEL MOTA DA COSTA (1).pdf: 2200564 bytes, checksum: 3828a984c3a6ee25ef6f2d93f10132ad (MD5) Previous issue date: 2014-09-24 / The caatinga vegetation of northeastern Brazil mainly occurs in Pre-Cambrian-crystalline-derived soils and sedimentary-basin-derived sandy soils. Recent evidence has shown variations in the dynamics, structure and floristic composition of the caatinga, which justifies the need for studies focusing on different substrates. A floristic study of the caatinga ecoregions Depress?o Sertaneja Meridional and Raso da Catarina in the municipality of Tucano, Bahia, Brazil, is of special interest because both substrates occur in a local scale, letting the opportunity to broaden our knowledge on ecological heterogeneity within the Caatinga biome. In the current study we carried out a floristic survey of 14 sites distributed throughout the ecoregions of caatinga in Tucano. We found high species diversity in the caatingas of Tucano when compared to other areas in northeastern Brazil. A total of 451 species, 288 genera, and 82 families were collected. The most species rich families are Leguminosae and Euphorbiaceae. There occur 226 species in the sites on crystalline basement, whereas 284 species were collected in the sandy areas. The ecoregions were only 13% similar in floristic composition. We found strong differences between the ecoregions with respect to floristic composition and predominant plant habit as proxy for phytophysiognomy. Overall, our results reinforce the hypothesis of two distinct biotas that assembly the caatinga dry woodlands. / A vegeta??o de caatinga do nordeste brasileiro ocorre principalmente sobre solos derivados de rochas cristalinas pr?-cambrianas e sobre cobertura arenosa de bacias sedimentares. Evid?ncias recentes t?m demonstrado varia??es na din?mica, estrutura e composi??o flor?stica da caatinga, o que fundamenta a necessidade de estudos com enfoque nos diferentes substratos. O presente estudo flor?stico das ecorregi?es de caatinga, Depress?o Sertaneja Meridional e Raso da Catarina, no munic?pio de Tucano, Bahia, ? de especial interesse porque h? esses dois substratos em escala geogr?fica local, permitindo ampliar o conhecimento sobre a heterogeneidade do Dom?nio da Caatinga. Neste trabalho ? apresentado um invent?rio flor?stico de 14 localidades nas duas ecorregi?es de caatinga. Em conjunto, as caatingas amostradas apresentaram uma alta riqueza flor?stica em compara??o com outras ?reas no nordeste do Brasil. Foram coletadas 451 esp?cies, 288 g?neros e 82 fam?lias. A maior riqueza em esp?cies foi das Leguminosae, seguida por Euphorbiaceae. Nas localidades sobre substrato derivado do embasamento cristalino ocorreram 226 esp?cies, enquanto nas de substrato arenoso ocorreram 284 esp?cies. A propor??o de esp?cies em comum nas duas ecorregi?es foi apenas 13%. Diferen?as em composi??o flor?stica refor?am a hip?tese de duas biotas distintas associadas aos dois principais tipos de substrato, que comp?em a vegeta??o da caatinga.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-09-27T22:26:12Z No. of bitstreams: 1 DISSERTA??O Val?ria Silva G?es.pdf: 1629398 bytes, checksum: 6e130737f6d57007b90ea3ae8de5042b (MD5) / Made available in DSpace on 2016-09-27T22:26:12Z (GMT). No. of bitstreams: 1 DISSERTA??O Val?ria Silva G?es.pdf: 1629398 bytes, checksum: 6e130737f6d57007b90ea3ae8de5042b (MD5) Previous issue date: 2015-03-31 / The Lamiaceae family has a great importance in the Brazilian semiarid region due to their species of pharmacological properties. Martianthus leucocephalus (Mart. Ex Benth.) JFB Pastore belongs to the Lamiaceae family and has had the antimicrobial activity of essential oil proven. However, this species lacks pharmacological studies that evaluate its biological potential. Thus, the aim of this study was to evaluate the effect on the central nervous system, the acute toxicity, as well as investigate the antinociceptive and anti-inflammatory of Martianthus leucocephalus extract. The possible mechanism of action of species was also studied. The experiments were performed in the Chemistry Laboratory of Bioactive Natural Products and in the Laboratory of Pharmacology at the State University of Feira de Santana. The effect on the central nervous system was evaluated through Behavioral Pharmacological Screening by Rota Rod test. The acute toxicity was determined using the protocol Organization for Economic Cooperation and Development (OECD - 420/2001). The antinociceptive activity was investigated in the tests of acetic acid, formalin and hot plate. The mechanism of action was determined using the opioid antagonist naloxone in the hot plate model. The study of anti-inflammatory activity was performed using the paw edema induced by carrageenan tests and capillary permeability induced by acetic acid. The results were analyzed by analysis of variance (ANOVA). Martianthus leucocephalus showed no acute toxicity or muscle relaxant effects action on the motor system. The antinociceptive and anti-inflammatory properties were found significantly compared to the control group animals. / A fam?lia Lamiaceae tem uma grande import?ncia na regi?o do semi?rido brasileiro devido ?s suas esp?cies detentoras de propriedades farmacol?gicas. Martianthus leucocephalus (Mart. ex Benth.) J.F.B. Pastore pertence ? fam?lia Lamiaceae e j? teve a atividade antimicrobiana do seu ?leo essencial comprovada. No entanto, a referida esp?cie carece outros de estudos farmacol?gicos que avaliem seu potencial biol?gico. Diante disso, o objetivo desse trabalho foi avaliar o efeito sobre o sistema nervoso central, a toxidade aguda, bem como investigar as atividades antinociceptiva e anti-inflamat?ria de extratos de Martianthus leucocephalus proveniente de cultivo. O poss?vel mecanismo de a??o da esp?cie tamb?m foi estudado. Os experimentos foram realizados no Laborat?rio de Qu?mica de Produtos Naturais e Bioativos e no Laborat?rio de Farmacologia da Universidade Estadual de Feira de Santana. O efeito sobre o sistema nervoso central foi avaliado por meio da Triagem Farmacol?gica Comportamental e pelo teste do Rota Rod. A toxidade aguda foi averiguada utilizando o protocolo Organization for Economic Cooperation and Development (OECD ? 420/2001). A atividade antinociceptiva foi investigada nos testes do ?cido ac?tico, formalina e placa quente. O mecanismo de a??o foi apurado utilizando o antagonista opioide naloxona no modelo da placa quente. O estudo da atividade anti-inflamat?ria foi realizado utilizando os testes do edema de pata induzido por carragenina e da permeabilidade capilar induzida por ?cido ac?tico. Os resultados obtidos foram analisados atrav?s da an?lise de vari?ncia (ANOVA). Martianthus leucocephalus n?o mostrou toxidade aguda nem a??o miorrelaxante sobre o sistema motor. As propriedades antinociceptiva e anti-inflamat?ria foram evidenciadas de forma significativa em rela??o aos animais do grupo controle.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2017-10-17T21:25:07Z No. of bitstreams: 1 Disserta??o_Janderson_Versao_Final.pdf: 7521820 bytes, checksum: 18fa39470356e8c8276a28e568152e4c (MD5) / Made available in DSpace on 2017-10-17T21:25:07Z (GMT). No. of bitstreams: 1 Disserta??o_Janderson_Versao_Final.pdf: 7521820 bytes, checksum: 18fa39470356e8c8276a28e568152e4c (MD5) Previous issue date: 2017-03-31 / Water is essential for the maintenance of life, however, environmental pollution has been causing the loss of the quality of water resources, affecting not only the life of living beings. The reservoirs represent the main source of water to supply the demands of the Brazilian Northeast. However, the quality of stored water has suffered from the effects of anthropic activities makes it compromised for human consumption, animal and for irrigation. In this context, the present work aimed to elaborate a case study on water quality in semi-arid regions, not for human consumption, specifically in the Sisal Identity Territory, having as main study area the main public dams in the municipality of Teofil?ndia-BA. In order to meet the proposed objective, a mapping of the main water bodies of the municipality of Teofil?ndia-BA was carried out, using images from Landsat 8 satellite, OLI sensor of 2014, orbit 216/68 by supervised classification. Subsequently, fieldwork was carried out consisting of three (3) campaigns for the collection of surface water, occurring in the period of May (pre-rain), June (post-rain) and November (dry). The physico-chemical parameters and metals analyzed were: Temperature, Salinity, Chloride, pH, OD, BOD, COD, Turbidity, Temotolerant Coliforms, Cadmium, Lead, Copper, Chromium, Manganese, Nickel and were compared with the standards established by Resolution N? 357 / 2005 of the National Environmental Council - CONAMA. In the evaluation of the results of the Land Use Use map, it was verified that the agricultural culture class predominates in the region with about 44,46%, permanent agriculture (agave) covers 10,72%. The area used with the vegetation (caatinga) is representative, totaling 17,15%. The exposed soil class represents 6,64% and 8,82% of the shade classes. The identifiable water bodies in the satellite image represent 0,16% and 12,05% of urban area. The accuracy of the mapping for the water bodies, provided by the Tau index, was 0,70. Regarding the results of the water quality evaluation of the three public dams located near the urban perimeter in the municipality of Teofil?ndia-BA during the three campaigns, it was possible to observe that the concentrations of Chloride, Electrical Conductivity, OD, BOD, COD and Thermotolerant Coliforms presented Variations that exceeded the limits established by current legislation. As for the evaluated metals, only Cd was not detected at any point and sampled period. There were no, in their greatest majority, correlation between the variable studies. In the pre-rain period the trend of contamination in the water followed the decreasing order: Ni> Pb> Mn> Cr, in the post-rain: Ni> Pb> Mn> Zn and not dry: Ni> Pb> Cu> Zn. From the data presented, it can be inferred that the main source of pollution of the waters of the dams is derived from anthropogenic origin, mainly by agricultural activities and insufficient sewage network. / A ?gua ? essencial para a manuten??o da vida, entretanto, a polui??o ambiental vem causando a perda da qualidade dos recursos h?dricos, afetando n?o apenas a vida dos seres vivos. Os a?udes representam a principal fonte de ?gua para suprir as demandas no semi?rido do nordeste brasileiro. No entanto, a qualidade da ?gua armazenada tem sofrido os efeitos provenientes das atividades antr?picas tornando-a comprometida para o consumo humano, animal e para irriga??o. Nesse contexto, o presente trabalho elaborou um estudo de caso sobre a qualidade da ?gua, n?o para suprimento humano, em regi?es semi?ridas, especificamente no Territ?rio de Identidade do Sisal, tendo como ?rea de estudo os principais a?udes p?blicos no munic?pio de Teofil?ndia-BA. Para atender o objetivo proposto foi realizado um mapeamento dos principais corpos de ?gua do munic?pio de Teofil?ndia-BA, utilizando imagens do sat?lite Landsat 8, sensor OLI do ano de 2014, ?rbita 216/68 por meio da classifica??o supervisionada. Posteriormente foram realizados trabalhos de campo constando de 3 (tr?s) campanhas de coleta de ?guas superficiais, ocorridas no per?odo de maio (pr?-chuva), junho (p?s-chuva) e novembro (seco). Os par?metros f?sico-qu?micos e metais analisados foram: Temperatura, Salinidade, Cloreto, pH, OD, DBO, DQO, Turbidez, Coliformes Termotolerantes, cadmio, chumbo, cromo, cobre, mangan?s, n?quel e zinco foram comparados com os padr?es estabelecidos pela Resolu??o N? 357/2005 do Conselho Nacional de Meio Ambiente ? CONAMA. Na avalia??o dos resultados do mapa de Uso Ocupa??o do Solo verificou-se que a classe da cultura agropecu?ria predomina na regi?o com cerca de 44,46%, a agricultura permanente (agave) abrange, 10,72%. A ?rea utilizada com a vegeta??o (caatinga) ? representativa totalizando 17,15%. A classe solo exposto representa, 6,64% e 8,82% das classes sombras. Os corpos d??gua identific?veis na imagem de sat?lite representam 0,16% e 12,05% de ?rea urbana. A acur?cia do mapeamento para os corpos d??gua, fornecida pelo ?ndice Tau, foi de 0,70. Com rela??o ao resultado da avalia??o da qualidade da ?gua dos tr?s a?udes p?blicos localizados pr?ximo ao per?metro urbano no munic?pio de Teofil?ndia-BA durante as tr?s campanhas, foi poss?vel observar que as concentra??es de Cloreto, Condutividade El?trica, OD, DBO, DQO e Coliformes Termotolerantes apresentaram varia??es de valores que excederam os limites estabelecidos pela legisla??o vigente. Quanto aos metais avaliados somente o Cd n?o foi detectado em nenhum dos pontos e per?odos amostrados. N?o houve, em sua grande maioria, correla??o entre as vari?veis estudadas. No per?odo pr?-chuva a tend?ncia de contamina??o na ?gua seguiu a ordem decrescente: Ni>Pb>Mn>Cr, no p?s-chuva: Ni>Pb>Mn>Zn e no seco: Ni>Pb>Cu>Zn. A partir dos dados apresentados, pode-se inferir que a principal fonte poluidora das ?guas dos a?udes ? proveniente de origem antropog?nica, principalmente por atividades agropecu?rias e insufici?ncia de uma rede de esgotamento sanit?rio.