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Investigation of the maximum and minimum temperatures in the semi-arid region of northeastern Brazil. = Investiga o das temperaturas máximas e mínimas no semiárido cearense, nordeste do Brasil.
Eunice Maia Andrade,Meilla Marielle Araújo Rodrigues,Marcos Amauri Bezerra Mendon?a,Luiz Carlos Guerreiro Chaves
Agro@mbiente On-line , 2011,
Abstract: Temperature records all over the world provide evidence that the earth’s climate is changing. To investigate changes in the extreme temperatures of semi-arid regions, we analyzed 33 years (1975-2008) of monthly maximum and minimum air temperatures for three weather stations located in Quixeramobim, Crateús and Barbalha Cities, Ceará, Brazil. The data sets were provided by INMET (Instituto Nacional de Meteorologia), Brazil. Dataset of each station was shared in decades to better understand the temperature tendency as well as to identify the warmest one. The two most recent decades were the warmest at all three stations investigated, and the highest temperature values were observed for Barbalha station. The highest increases of maximum temperature occurred during the dry season (May/Dec), and the warmest month was October, during which temperature increases of up to 1.63 °C were observed in the 1980s. The minimum temperature increased substantially during the rainy season (Jan/Apr) and during the coldest months (Jun/Jul). The highest increase of minimum temperature (3.08°C) was observed in July at the Barbalha station. The Quixeramobim station showed no significant increases in minimum temperature. The results indicate that temperature increases occur in an irregular pattern, suggesting that various regional agents affect changes in temperature.
Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará
Andrade, Eunice Maia de;Silva, Bernardo Barbosa da;Rodrigues, Meilla Marielle Araújo;Mendon?a, Marcos Amauri Bezerra;Chaves, Luiz Carlos Guerreiro;
Revista Ciência Agron?mica , 2012, DOI: 10.1590/S1806-66902012000200008
Abstract: despite uncertainties as to the real causes, there is a large amount of evidence of climatic change on earth. with the objective of investigating changes in extreme air temperatures, as well as the local effects of these changes, eight data sets, collected throughout the state of ceará in brazil, were analyzed. four series of data were obtained from the semi-arid region, three from the coastal zone, and one from a mountainous region. to quantify the changes that occurred during the study period, variations in maximum and minimum temperatures were calculated in relation to the mean of each data series. the annual rates of temperature increase were estimated from the angular coefficients of the best-fit lines. the results showed that although there are differences in trends between stations, there was a systematic increase in the maximum and minimum temperature in the nineties, which was especially evident in the following decade. the highest rates of increase were recorded for the minimum temperatures (from 9.0 to 8.3 °c per century) for the stations at guaramiranga and crateús respectively. these data provide evidence for a greater retention of energy in the form of sensible heat during the night, possibly due to a more difficult energy exchange between the surface and the atmosphere.
A PESCA MARíTIMA ARTESANAL COMO PRINCIPAL ATIVIDADE SOCIOECON MICA: O CASO DE CONCEI O DE VERA CRUZ, BA
Jamile Araújo Rodrigues
Cadernos do Logepa , 2011,
Abstract: O artigo trata de uma atividade socioecon mica de importancia espacial, tendo como objeto de estudo, a pescaria desenvolvida em Concei o de Vera Cruz. Objetiva descrever a frota, os petrechos e a rotina de pesca da localidade, com o intuito de contribuir teoricamente na elabora o de planos de manejo para uma pesca sustentável na localidade. Trataremos da pesca marítima artesanal como objeto econ mico, para as comunidades litoraneas, ressaltando o papel dos pescadores locais, fazendo o uso da História, da Antropologia, da Geografia e da Economia na análise da atividade pesqueira marítima. Apresentando um apanhado das atividades pesqueiras nas diferentes regi es brasileiras e os incentivos aplicados em cada uma delas, trazemos essas experiências para a localidade estudada, fazendo o uso de pesquisa teórica, de trabalhos campo e entrevistas semiestruturadas com moradores locais. Os resultados obtidos possibilitaram o diagnóstico socioecon mico da vila, onde a pesca marítima artesanal é um meio subsistência e de fortalecimento da economia local.
Foraging behavior of the queenless ant Dinoponera quadriceps Santschi (Hymenoptera: Formicidae)
Araújo, Arrilton;Rodrigues, Zenilde;
Neotropical Entomology , 2006, DOI: 10.1590/S1519-566X2006000200002
Abstract: the search for and ingestion of food are essential to all animals, which spend most of their lives looking for nutritional sources, more than other activities such as mating, intra-specific disputes or escaping from predators. the present study aims to describe and quantify several aspects of foraging behavior, diet and food transport in the queenless ant dinoponera quadriceps santschi in a secondary atlantic forest, northeastern brazil. three colonies were randomly selected at a distance of at least 50 m from one another. on leaving the colony, worker ants were followed until their return, with no nutritional provision or interference with their activities. activities were recorded using focal time sampling with instantaneous recording every minute for 10 consecutive minutes. each colony was observed 1 day/week, for at least 6 h/day resulting in 53.8h of direct observation of the workers. foraging activities, success in transporting food, type of food, cleaning and interaction among the workers were recorded. foraging was always individual, with no occurrence of recruitment. diet was composed mainly of arthropods, mostly insects. the collection of small fruits (eugenia sp.) was also observed. foraging time was greater when workers transported food to the colony, the return time being shorter than the foraging period, suggesting the use of chemical and visual cues for orientation during their foraging and food-collecting activities.
Bioquímica da esquistossomose mans?nica: VII. Altera??es lipídicas das membranas lisoss?micas durante a faze inicial da agress?o hepática
Rodrigues, Luiz Erlon Araújo;
Memórias do Instituto Oswaldo Cruz , 1988, DOI: 10.1590/S0074-02761988000100007
Abstract: aiming at investigating the changes on the lipidic constitution of hepatic lysosomal membranes at the initial phase of schistosomotic damage, mice have been infected with 30 cercarias and employed for essais in the 30th day if infection. the triacyglycerois decreased from 220 ± 48 μg/mg of total proteins in the control mice, to 165 ± 22μg/mg in the infected ones. similarily, the free cholesterol, also decreased from 539 ± 80 to 396 ± 54 μg/mg; the cholesterol esters from 270 ± 35 to 216 ± 36 μg/mg and the phosphatidylcholines from 44 ± 5,7 to 31 ± 4,9 μg/mg. the phosphatidylserines the phosphatidylethanolamines and the sphingomyelines increased, respectively from 58 ± 9,7 to 60 ± 8,5, from 72 ± 7,8 to 111 ± 15,7 and from 36 ± 4,9 to 63 ± 7,1 μg/mg. the free fatty acids showed no statistical significance on their variations. they varied from 1,7 ± 0,25 μeq/g in the controls to 1,8 ± 0,39 eq/g in the infected animals. these results indicated that in the initial phase of hepatic schistosomiasis, before the formation of granulomas, important changes on the lipidic constitution of lysosomal membranes can be detected. it seems that they are provoked by the catabolic excreted by immature or adult worms of schistosoma mansoni present in the portal vein system.
Gesù Cristo è il Signore: a Igreja Universal do Reino de Deus em Itália
Rodrigues,Donizete; Silva,Marcos de Araújo;
Etnográfica , 2012,
Abstract: based on ethnographic research, this article focuses on the presence of the universal church of the kingdom of god (uckg) in italy, where it operates under the name chiesa cristiana dello spirito santo (ccss). it discusses the case of the uckg in italy with emphasis on its strong proselytism and deployment strategy, and its relationship with immigrants, brazilian and from other ethnic minorities, and italian nationals. the most successful example of transnationalization of brazilian protestantism in this pentecostal trend and present on five continents, the uckg-ccss in italy is analyzed trough an anthropological approach in the context of the brazilian diaspora and the “reverse mission”, two very important phenomena and of great interest for the social sciences.
Gesù Cristo è il Signore: a Igreja Universal do Reino de Deus em Itália Gesù Cristo è Il Signore: the Universal Church of the Kingdom of God in Italy
Donizete Rodrigues,Marcos de Araújo Silva
Etnográfica , 2012,
Abstract: Com base em pesquisas etnográficas, este artigo trata da presen a da Igreja Universal do Reino de Deus (IURD) em Itália, onde atua com o nome de Chiesa Cristiana dello Spirito Santo (CCSS), enfatizando o seu forte proselitismo e estratégia de implanta o e a sua rela o com os imigrantes, brasileiros e de outras minorias étnicas, e com os nacionais italianos. Exemplo de maior sucesso da transnacionaliza o do protestantismo brasileiro na sua vertente pentecostal e presente nos cinco continentes, a IURD-CCSS é analisada a partir de uma abordagem antropológica feita no contexto da problemática da diáspora brasileira e da reverse mission, dois fenómenos muito importantes e de grande interesse para as ciências sociais. Based on ethnographic research, this article focuses on the presence of the Universal Church of the Kingdom of God (UCKG) in Italy, where it operates under the name Chiesa Cristiana dello Spirito Santo (CCSS). It discusses the case of the UCKG in Italy with emphasis on its strong proselytism and deployment strategy, and its relationship with immigrants, Brazilian and from other ethnic minorities, and Italian nationals. The most successful example of transnationalization of Brazilian Protestantism in this Pentecostal trend and present on five continents, the UCKG-CCSS in Italy is analyzed trough an anthropological approach in the context of the Brazilian diaspora and the “reverse mission”, two very important phenomena and of great interest for the social sciences.
Theoretical Evaluation of Two-Phase Flow in a Horizontal Duct with Leaks  [PDF]
Morgana de Vasconcellos Araújo, Severino Rodrigues de Farias Neto, Antonio Gilson Barbosa de Lima
Advances in Chemical Engineering and Science (ACES) , 2013, DOI: 10.4236/aces.2013.34A1002
Abstract: The transport of oil and its derivates are done, mostly, by pipeline. The time to detect leaks has to be short for pre-venting big disasters in the nature and decreasing losses for industries. The techniques available for leak detection vary from visual inspection to the use of computational techniques such as mathematical modeling. This paper aims to study the fluid dynamics of two-phase flow (water-oil) in the pipe with leakage. The equations of the mass and momentum conservation are numerically solved by using the ANSYSCFX commercial code with the aid of a structured mesh of a horizontal pipe with three holes of leaks. The Eulerian-Eulerian model was adopted considering the oil as continuous phase and water as dispersed phase, and constant fluid properties. With profiles of pressure and volume fraction along the time in the pipe, the influence of leakage on the single-phase (oil) and two-phase (water-oil) was evaluated.
A New Sesquiterpene from Trichilia casarettii (Meliaceae)  [PDF]
Ivo José Curcino Vieira, Elaine Rodrigues Figueiredo, Virginia Rodrigues Freitas, Leda Mathias, Raimundo Braz-Filho, Renata Mendon?a Araújo
American Journal of Analytical Chemistry (AJAC) , 2010, DOI: 10.4236/ajac.2010.12009
Abstract: The dichloromethane extract of the air-dried stems of Trichilia casarettii afforded a new sesquiterpene (1), lupeol, stigmasterol, campesterol and sitosterol. The structure of 1 was elucidated by extensive one-and two- dimensional nuclear magnetic resonance and mass spectrometry.
Feed restriction on performance and blood parameters of broilers fed diets with different sodium levels
Junqueira, OM;Fonseca, LEC;Araújo, LF;Duarte, KF;Araújo, CS da S;Rodrigues, EAp;
Revista Brasileira de Ciência Avícola , 2003, DOI: 10.1590/S1516-635X2003000200003
Abstract: the experiment was conducted to evaluate the effect of feed restriction and different sodium levels in the diet on the performance and hematological values (erythrocyte, hemoglobin, hematocrit, mean cell volume, mean cell hemoglobin, mean cell hemoglobin concentration and white blood cell) of broilers from 22 to 42 days of age. a completely randomized design was used in a 4 x 2 x 2 factorial (levels of sodium: 0.16%, 0.19%, 0.22% and 0.25%; with or without feed restriction; male and female), and two replicates of thirty broilers each. sodium levels did not affect performance (p>0.05). feed restriction resulted in increased feed intake and affected weight gain and feed conversion negatively (p<0.05). better weight gain and feed conversion (p<0.05) were seen in male broilers. hematological values were not affected by sodium levels, feed restriction or sex (p>0.05).
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