• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 2
  • Tagged with
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Flebotomineos (DIPTERA: PSYCHODIDAE: PHLEBOTOMINAE) de uma zona de prote??o ambiental e seu entorno: resposta comportamental a diferentes fontes luminosas

Silva, Marcel Miranda de Medeiros 31 August 2017 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-03-12T18:23:36Z No. of bitstreams: 1 MarcelMirandaDeMedeirosSilva_DISSERT.pdf: 3559206 bytes, checksum: 8939b90a70f7fadf56b00c1a77dd4dd6 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-03-15T21:22:39Z (GMT) No. of bitstreams: 1 MarcelMirandaDeMedeirosSilva_DISSERT.pdf: 3559206 bytes, checksum: 8939b90a70f7fadf56b00c1a77dd4dd6 (MD5) / Made available in DSpace on 2018-03-15T21:22:39Z (GMT). No. of bitstreams: 1 MarcelMirandaDeMedeirosSilva_DISSERT.pdf: 3559206 bytes, checksum: 8939b90a70f7fadf56b00c1a77dd4dd6 (MD5) Previous issue date: 2017-08-31 / O desflorestamento tem impactado diretamente sobre a bionomia e biologia dos vetores de leishmaniose. A vigil?ncia entomol?gica, como medida preconizada pela OMS para o estabelecimento das a??es de controle e monitoramento da transmiss?o de Leishmania, requer a captura de flebotom?neos em ec?topos diferentes. Para esta finalidade, as armadilhas luminosas do tipo Center for Disease Control s?o as mais utilizadas. Adapta??es vem sendo desenvolvidas visando maior atratividade dos flebotom?neos e, consequentemente, maior n?mero de insetos capturados nas armadilhas. A percep??o de diferentes comprimentos de onda do espectro vis?vel pelo flebotom?neos ainda n?o est? completamente elucidada. O estudo pautou-se na investiga??o da fauna de flebotom?neos de uma zona de prote??o ambiental na zona norte de Natal e seu entorno, observando tamb?m a atratividade de cada esp?cie em rela??o ao espectro vis?vel emitido por tr?s l?mpadas diferentes: LED azul, LED vermelho e controle incandescente. As capturas dos flebotom?neos ocorreram durante 1 ano, com a frequ?ncia de 3 dias consecutivos por m?s, nos ec?topos de mata e peridomic?lio; Diariamente as armadilhas eram trocadas de posi??o. A fauna de flebotom?neos capturados revelou sete esp?cies divididas em cinco g?neros. O teste H? de Kruskal-Wallis revelou uma influ?ncia significante entre o espectro luminoso emitido pela l?mpada da armadilha e a abund?ncia de insetos capturados. O teste do modelo linear generalizado demonstrou uma influ?ncia significante entre os conjuntos ?rea-sexo e cor-?rea com o n?mero de flebotom?neos coletados. As armadilhas que utilizam LED azul apresentaram uma maior efic?cia na captura dos flebotom?neos, apresentando valores quase duas vezes maior que a l?mpada incandescente. As l?mpadas com tecnologia LED substituem favoravelmente a atra??o e captura das esp?cies de flebotom?neos, aumentando a efic?cia na diversidade e abund?ncia. / Deforestation has directly impacted the biology and bionomy of leishmaniasis vectors. Entomological surveillance, as a measure recommended by the WHO for the establishment of control actions and monitoring of Leishmania transmission, requires the capture of sandflies in different ecotopes. For this purpose, light traps of the Center for Disease Control type are the most commonly used. Adaptations have been developed to enhance the attractiveness of sand flies and, consequently, capture more insects in the traps. The perception of different wavelengths of the spectrum visible by sand flies is not yet fully elucidated. The study was based on the investigation of phlebotomine sand fly fauna of an environmental protection zone in the north of Natal city and its surroundings, also observing the attractiveness of each species in relation to the visible spectrum emitted by three different lamps: blue LED, red LED and glow control. Phlebotomine catches occurred for one year, with a frequency of three consecutive days per month, in forest and peridomicillary ecotopes; Traps were changed every day. The fauna of captured sand flies revealed seven species divided into five genera. The Kruskal-Wallis H' test revealed a noteworthy difference between the light spectrum emitted by the trap lamp and the abundance of captured insects. The test of the generalized linear model demonstrated a significant influence between the area-sex and color-area sets with the number of sandflies collected. Traps using blue LED showed a greater efficiency in the capture of sand flies, presenting values almost twice as great as the incandescent lamp. Lamps with LED technology favorably replace the attraction and capture of phlebotomine sandflies species, increasing the effectiveness in diversity and abundance.
2

Horticultura no baixo curso do Rio Doce, zona norte do Natal/RN: avalia??o da qualidade da ?gua por meio de ensaios ecotoxicol?gicos / Horticulture in the lower course of the doce river, the northern natal / rn: evaluation of water quality through testing ecotoxicological

Moura, Wanessa Kaline de Ara?jo 22 February 2011 (has links)
Made available in DSpace on 2014-12-17T15:55:01Z (GMT). No. of bitstreams: 1 WanessaKAM_DISSERT.pdf: 2645874 bytes, checksum: 44a6454842a90af24f8de64d34564aec (MD5) Previous issue date: 2011-02-22 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The research is developed in areas of horticulture in the city of Natal, in the neighborhoods of Lagoa Azul, Paju?ara and Redinha, along the Doce River, border area with Extremoz city, Rio Grande do Norte State. The region of the fluvial plain of Doce River is located in an Environmental Protection Zone (ZPA-9). This is one of the ZPA which is not under the regulatory marks and there are several environmental problems caused by use and land occupation, featuring an evident disregard of environmental laws and whose protection is hindered by the lack of specific legal mechanisms. This study aims to provide an overview of the use of pesticides in the lower course of the Doce River, in Natal, Rio Grande do Norte, and to assess environmental degradation in the area through chronic toxicity tests using the microcrustaceous Ceriodaphnia dubia Richard 1894 (Cladocera, Crustacea) as test organism. Visits were made to the area in 2009 and 2010. To obtain information a diagnosis of the local situation was accomplished based on personal observation and non-participatory photographic record, with the aim of assessing the environmental characteristics, population diversity and work processes of horticulturists. During the visits four different points of the Doce River were chosen to collect water for ecotoxicological tests and survey of physico-chemical parameters (dissolved oxygen, pH, chloride, turbidity, conductivity and temperature), which were measured in the field using Multiparameter Probe (TROLL 9500). The adverse effects of pesticide use in the lower course of the Doce River is a major problem for both the environmental and human health, since many of the substances and active principles that enter in the composition of the products are synthesized molecules whose effects can only be evaluated through different studies on their actions and behavior at short, medium or long term / O trabalho de pesquisa objeto deste projeto ? desenvolvido em ?reas de horticultura no munic?pio de Natal, nos bairros de Lagoa Azul, Paju?ara e Redinha, ao longo do Rio Doce, limite com o munic?pio de Extremoz, Rio Grande do Norte. A regi?o da plan?cie fluvial do Rio Doce localiza-se em Zona de Prote??o Ambiental (ZPA-9). Esta ZPA ? uma das que ainda n?o est?o regulamentadas e nela s?o observados diversos problemas ambientais decorrentes do uso e ocupa??o do solo, caracterizando um flagrante desrespeito ? legisla??o ambiental e cuja prote??o ? dificultada devido ? inexist?ncia de mecanismos legais espec?ficos. Este trabalho tem por objetivos apresentar um panorama sobre o uso de agrot?xicos na regi?o do baixo curso do Rio Doce, em Natal, Rio Grande do Norte, bem como avaliar a degrada??o ambiental na ?rea por meio de testes de toxicidade cr?nicos, utilizando o microcrust?ceo Ceriodaphnia dubia Richard, 1894 (Crustacea, Cladocera) como organismo teste. Foram realizadas visitas ? ?rea em 2009 e 2010. Para obten??o de informa??es foi feito um diagn?stico da situa??o local baseado em observa??o pessoal n?o participativa e registro fotogr?fico, com o intuito de averiguar as caracter?sticas do ambiente, diversidade populacional e processo de trabalho dos horticultores. Durante as visitas foram escolhidos quatro pontos distintos do Rio Doce para a coleta de ?gua para ensaios ecotoxicol?gicos e para o levantamento de par?metros f?sico qu?micos (Oxig?nio Dissolvido, pH, cloreto, turbidez, condutividade e temperatura), que foram medidos em campo utilizando Sonda Multi-param?trica (TROLL 9500). Os efeitos adversos da utiliza??o dos agrot?xicos na regi?o do baixo curso do Rio Doce constituem um problema tanto para o meio ambiente quanto para a sa?de humana, uma vez que muitas das subst?ncias e princ?pios ativos que comp?em os produtos s?o mol?culas sintetizadas, cujos efeitos somente poder?o ser avaliados a partir de estudos variados sobre as suas atua??es e o seu comportamento, de curto, m?dio ou longo per?odo

Page generated in 0.0848 seconds