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Variabilidade do NDVI na área em torno do a ude Orós – Ceará
Francisco Dirceu Duarte Arraes,Eunice Maia de Andrade,Bernardo Barbosa Silva,Luiz Carlos Guerreiro Chaves
Revista Brasileira de Agricultura Irrigada , 2010, DOI: 10.7127/rbai.v4n300009
Abstract: Os índices de vegeta o foram desenvolvidos com a finalidade de ressaltar a resposta espectral da vegeta o em fun o do fechamento da mesma sobre o solo. Este trabalho objetivou analisar e interpretar a variabilidade do NDVI em três usos da terra (irriga o, mata nativa e antropizada) na área em torno do a ude Orós, Ceará. Foram utilizadas imagens TM do LANDSAT 5, cedidas pelo INPE, referentes à órbita/ponto 217/ 64, período de 1992 a 2008. Utilizou-se o software ERDAS IMAGINE 8.5 para fazer as opera es matemáticas e se estimar o NDVI, aplicando-se o algoritmo SEBAL. Os resultados mostraram que o NDVI do uso da terra – irriga o foi praticamente constante ao longo do período estudado e que na da mata nativa expressou uma estreita rela o com a distribui o anual da precipita o. Já oNDVI das áreas antropizadas apresentou um decréscimo constante a partir do ano de 1996,expressando uma redu o da vegeta o nessas áreas.
A new proposal of the classification of irrigation water
Meireles, Ana Célia Maia;Andrade, Eunice Maia de;Chaves, Luiz Carlos Guerreiro;Frischkorn, Horst;Crisostomo, Lindbergue Araujo;
Revista Ciência Agron?mica , 2010, DOI: 10.1590/S1806-66902010000300005
Abstract: a study on surface water quality in the acaraú basin, in the north of the state of ceará, brazil was performed. qualitative dynamics of water flowing to the acaraú river that supplies water to the irrigation project in the area was evaluated. multivariate factor analysis/principal component analysis was used for evaluation of water quality in order to develop a water quality index (wqi) that reflects soil salinity and sodicity risks and water toxicity to plants. from april/2003 to september/2005 water were sampled from ten sampling sites covering the basin, where physical and chemical parameters that contribute to the wqi were evaluated. the results showed that the use of water for irrigation in the acaraú basin, according to the proposed wqi, are potentially prone to cause toxicity (crop cycle) and sodicity problem in the long run, if the soil-water-plant is not carefully monitored.
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.
Tratamento das epilepsias generalizadas idiopáticas
Betting, Luiz Eduardo;Guerreiro, Carlos A. M.;
Journal of Epilepsy and Clinical Neurophysiology , 2008, DOI: 10.1590/S1676-26492008000600004
Abstract: idiopathic generalized epilepsies (iges) correspond to one-third of all epilepsies. despite of this high frequency, iges remains underdiagnosed. clinical features are the cornerstone to diagnosis. in this group all types of generalized seizures may occur such as generalized tonic-clonic, absences and myoclonic seizures. eeg is very supportive of iges diagnosis when it shows the typical generalized symmetrical, spike or polispyke and waves complexes with normal background. according to the main seizure type and the age of onset, iges are divided in subsyndromes. the importance of the correct diagnosis is supported by the high rate of seizure free patients under appropriate antiepileptic drug therapy. on the other hand, the use of some antiepileptic drugs such as carbamazepine or phenytoin may exacerbate the seizures or even induce status epilepticus in some subsyndromes. in this article, the main antiepileptic drugs used in the treatment of iges are reviewed as well as some practical issues for iges subsyndromes treatment.
Tratamento das epilepsias parciais
Betting, Luiz Eduardo;Guerreiro, Carlos A. M.;
Journal of Epilepsy and Clinical Neurophysiology , 2008, DOI: 10.1590/S1676-26492008000600005
Abstract: partial epilepsies are the most common form of epilepsy in adult individuals. antiepileptic drugs (aeds) continue as the main form of treatment for patients with epilepsy. regardless of the importance of the medication a high number of patients are under inappropriate or not receiving aeds. there are several medications available for the treatment of epilepsy. the choice of a particular medication or association among aeds may be individualized as much as possible. in this article some aspects such as classification, onset of the seizures, age, sex, associated medical conditions, cost and posology of aeds and medical drug history are reviewed. details of the available aeds are also discussed. these points may help to create a profile helping the decision for the appropriate aed. some practical issues like adverse reaction management, monotherapy and politherapy are also discussed.
Tratamento das epilepsias parciais Partial epilepsies treatment
Luiz Eduardo Betting,Carlos A. M. Guerreiro
Journal of Epilepsy and Clinical Neurophysiology , 2008,
Abstract: As epilepsias parciais constituem a forma mais comum de epilepsia nos indivíduos adultos. As drogas antiepilépticas (DAEs) permanecem como a principal forma de tratamento para os pacientes com epilepsia. Apesar da importancia da medica o um número elevado de pacientes permanece sob um regime terapêutico inapropriado ou até mesmo sem qualquer medica o. Existem várias medica es disponíveis para o tratamento das epilepsias. A escolha de uma medica o específica ou a associa o entre DAEs deve ser particularizada o máximo possível. Neste artigo revisamos alguns aspectos como classifica o, início das crises, idade, sexo, comorbidades, custo e posologia das DAEs e história medicamentosa com a perspectiva de auxiliar nesta individualiza o do tratamento. Algumas características das principais DAEs disponíveis também s o discutidas. Estes aspectos podem auxiliar na cria o de um perfil ajudando assim na escolha do regime terapêutico mais apropriado para cada indivíduo. Aspectos práticos como o manuseio dos efeitos adversos, monoterapia e politerapia também s o abordados. Partial epilepsies are the most common form of epilepsy in adult individuals. Antiepileptic drugs (AEDs) continue as the main form of treatment for patients with epilepsy. Regardless of the importance of the medication a high number of patients are under inappropriate or not receiving AEDs. There are several medications available for the treatment of epilepsy. The choice of a particular medication or association among AEDs may be individualized as much as possible. In this article some aspects such as classification, onset of the seizures, age, sex, associated medical conditions, cost and posology of AEDs and medical drug history are reviewed. Details of the available AEDs are also discussed. These points may help to create a profile helping the decision for the appropriate AED. Some practical issues like adverse reaction management, monotherapy and politherapy are also discussed.
Tratamento das epilepsias generalizadas idiopáticas Idiopathic generalized epilepsies treatment
Luiz Eduardo Betting,Carlos A. M. Guerreiro
Journal of Epilepsy and Clinical Neurophysiology , 2008,
Abstract: As epilepsias generalizadas idiopáticas (EGIs) correspondem a um-ter o de todas as epilepsias. Apesar desta elevada freqüência, as EGIs permanecem pouco reconhecidas. As características clínicas s o fundamentais para o diagnóstico. Neste grupo de epilepsias, todos os tipos de crises generalizadas podem ocorrer especialmente as crises t nico-cl nicas generalizadas, as crises miocl nicas e as crises de ausência. O eletroencefograma é bastante sugestivo do diagnóstico quando evidencia os típicos complexos espículas ou poliespículas-onda lenta, generalizados, simétricos e com atividade de base normal. De acordo com o tipo de crise predominante e com a idade de início das crises, as EGIs s o divididas em subsíndromes. A importancia do diagnóstico preciso está relacionada com a elevada porcentagem de indivíduos livre de crises quando tratados com a medica o antiepiléptica apropriada. Por outro lado, o uso de algumas medica es antiepilépticas como carbamazepina e fenitoína pode exacerbar as crises ou até mesmo induzir estado de mal epiléptico em determinadas subsíndromes. Neste artigo, revisamos as principais medica es antiepilépticas utilizadas no tratamento das EGIs bem como alguns aspectos práticos no tratamento das subsíndromes mais freqüentes. Idiopathic generalized epilepsies (IGEs) correspond to one-third of all epilepsies. Despite of this high frequency, IGEs remains underdiagnosed. Clinical features are the cornerstone to diagnosis. In this group all types of generalized seizures may occur such as generalized tonic-clonic, absences and myoclonic seizures. EEG is very supportive of IGEs diagnosis when it shows the typical generalized symmetrical, spike or polispyke and waves complexes with normal background. According to the main seizure type and the age of onset, IGEs are divided in subsyndromes. The importance of the correct diagnosis is supported by the high rate of seizure free patients under appropriate antiepileptic drug therapy. On the other hand, the use of some antiepileptic drugs such as carbamazepine or phenytoin may exacerbate the seizures or even induce status epilepticus in some subsyndromes. In this article, the main antiepileptic drugs used in the treatment of IGEs are reviewed as well as some practical issues for IGEs subsyndromes treatment.
Estudo da associa??o entre fatores socioambientais e prevalência de parasitose intestinal em área periférica da cidade de Manaus (AM, Brasil)
Visser,Silvia; Giatti,Leandro Luiz; Carvalho,Ricardo Augusto Chaves de; Guerreiro,Jose Camilo Hurtado;
Ciência & Saúde Coletiva , 2011, DOI: 10.1590/S1413-81232011000900016
Abstract: this study assesses the association between socio-environmental factors and urban sanitation conditions with the prevalence of intestinal parasitosis in a community on the periphery of the city of manaus. the study comprised a socio-environmental survey and a parasitological inquiry. a heterogeneous community was revealed with some socio-economic and environmental differences between the micro-areas evaluated, even though the urban sanitation conditions were found to be predominantly precarious. the prevalance of intestinal parasitosis was 44.2%. there was no significant difference between the micro-areas that could explain the occurrence of intestinal parasitosis. an association was found between intestinal parasitosis and residential building types, age bracket and the quality of the water used for personal hygiene and consumption in the home. open air sewerage was a risk factor associated with intestinal parasitosis (or=6.72; p=0.034) and also with intestinal protozoa (or=21.87; p=0.004). in terms of the presence of protozoa, two risk factors were verified: the dumping of sewage directly into the river system (or=12.98; p=0.011) and the use of rudimentary cesspits (or=9.54; p=0.019).
Componentes do peso vivo em cordeiros e borregos Polwarth e cruzas Texel x Polwarth
Osório, José Carlos;Sierra, Isidro;Sa?udo, Carlos;Guerreiro, José Luiz;Jardim, Pedro Osório;
Ciência Rural , 1995, DOI: 10.1590/S0103-84781995000100026
Abstract: this work was undertaken to compare and quantify live body weight, at slaughter, and its components of polwarth and polwarth x texel (ram) lambs and hoggets. fifty-nine lambs (116 days old) were slaughtered. from that, forty were polwarth (21 males and 19 females) and nineteen were polwarth x texel cresses (7 males and 12 females). also, twenty-four hoggets (450 days old) were slaughtered. fourteen hoggets were polwarth and ten polwarth x texel cresses. the animals were raised under range conditions on native pasture, in seuthem brazil (pelotas-rs), and castrated at 30 days eld. there were no significant diferences, in absolute values, for body weight and its components, among purebred lambs and crosses; for hoggets, the crosses have shown higher weights (live body weight at slaughter, warm and cool carcass, head, lungs plus trachea, liver, kidney plus pelvic fat, and kidney). in percentage values, significant effects were observed among rebred and crosses only with lambs for hide and lungs plus trachea and sex effect for legs and liver. the results have shown that the crossbreeding among polwarth (ewes) and texel, for the increment of meat production under range conditions, is possible at a later age and weight (hoggets) but not for lambs.
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