Diurnal Cycle
Mostrando 1-12 de 105 artigos, teses e dissertações.
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1. Characterization of Surface Level Wind in the Centro de Lançamento de Alcântara for Use in Rocket Structure Loading and Dispersion Studies
Abstract: We present wind data collected for ten days during the dry season in 2008 during the Murici II Campaign, which was carried out in the area of the Centro de Lançamento de Alcântara (CLA). The main goals are to better understand processes governing the wind regime in the CLA and the development of tools for analyzing the impact of wind on rocket st
J. Aerosp. Technol. Manag.. Publicado em: 2012-03
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2. Diurnal changes in storage carbohydrate metabolism in cotyledons of the tropical tree Hymenaea courbaril L. (Leguminosae)
The cotyledons of Hymenaea courbaril store large amounts of xyloglucan, a cell wall polysaccharide that is believed to serve as storage for the period of seedling establishment. During storage mobilisation, xyloglucan seems to be degraded by a continuous process that starts right after radicle protrusion and follows up to the establishment of photosynthesis.
Braz. J. Bot.. Publicado em: 2012
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3. HistÃria natural das serpentes Oxibelis aeneus (Wagler, 1824) (Squamata, Colubridae) e Philodryas nattereri Steindachner, 1870 (Squamata, Dipsadidae) em domÃnio de caatinga no estado do Cearà / Natural history of snakes Oxibelis aeneus (Wagler, 1824) (Squamata, Colubridae) and Philodryas nattereri Steindachner, 1870 (Squamata, Dipsadidae) in the area of caatinga in the state of CearÃ
It is presented a detailed study on the ecology of two species of snakes that occur on the state of CearÃ, Oxybelis aeneus (Wagler, 1824) and Philodryas nattereri Steindachner, 1870. Both species could be found in the field during all months of the year, O. aeneus presented a peak during the dry season while P. nattereri were more easily found during the ra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/02/2010
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4. Biología y hábitos del barrenador de la semilla Bephratelloides cubensis ashmead (Hymenoptera: Eurytomidae)
The soursop Annona muricata is an important fruit for national market, and for exportation, but the crop is affected by pests and diseases. The seed borer wasp Bephratelloides cubensis Ashmead is the pest that produces the highest damage to the crop in Mexico. Sixty percent of damaged fruits and 5-50 seeds per fruit have been registered, with 25% reduction i
Neotropical Entomology. Publicado em: 2010-08
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5. Numerical simulation of the rainfall diurnal cycle over the amazon basin during the rainy season / Simulação numérica do ciclo diário da precipitação sobre a bacia amazônica durante a estação chuvosa
The diurnal cycle is the climatic mode directly modulated by surface forcing. Numerical models fail to simulate it, especially over the continental areas during the warm season. Previous studies show that in the Amazon Basin the maximum rainfall is simulated around four hours before to the one observed with rain gauges. Thus, this work emphasizes the importa
Publicado em: 2009
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6. Simulação numérica do ciclo diário da precipitação sobre a bacia amazônica durante a estação chuvosa / Numerical simulation of the rainfall diurnal cycle over the amazon basin during the rainy season
Ciclo diário é o modo de variabilidade do clima que responde primariamente às forçantes de superfície. Modelos numéricos apresentam deficiência em simulá-lo principalmente sobre áreas continentais durante o verão. No caso da Bacia Amazônica, mostra-se que o máximo de precipitação simulado é adiantado em cerca de quatro horas relativamente às
Publicado em: 2009
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7. Avaliação de modelos fotoquímicos de qualidade do ar e estudo das circulações atmosféricas nos processos de dispersão de poluentes / Evaluation of air quality photochemical models and atmospheric circulations in the pollution dispersion processes.
Throughout numerical simulations and near to surface measurements of pollutants concentrations, in this work some meteorological situations of relevance for high ozone concentrations episodes over the Metropolitan Area of Sao Paulo (MASP) were studied., between 1999 and 2006. Firstly, two photochemical models, CIT and SPM-BRAMS, were evaluated in the sense o
Publicado em: 2008
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8. Ecologia alimentar e reprodutiva de duas espécies de Tropidodryas (Serpentes, Colubridae) da Mata Atlântica / Diet and reproduction of two snakes of the genus Tropidodryas (Serpentes, Colubridae) from the Atlantic Forest
Morphology, diet, habitat use, seasonal activity and reproductive biology were analyzed and compared between Tropidodryas serra and T. striaticeps along their geographical distribution in the Atlantic Forest. The distribution of these sister species do not overlap in most of their range, T. serra have its distribution in lower altitude areaswhile T. striatic
Publicado em: 2008
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9. Experimentos com o modelo regional eta em diferentes configurações durante o período salljex e mecanismos de mesoescala associados ao desenvolvimento de scm / Experiments with the regional eta model in different settings during the salljex period and mesoescale mechanisms associated with MCS development
The rainfall regime over southern Brazil, Uruguay and northern Argentina is strongly influenced by Mesoscale Convective Complexes (MCCs) that develop during night time associated with the Low Level Jet (LLJ) to the east of Andes. As they are mesoscale systems, their predictability depends on the model resolution and ability in representing the main features
Publicado em: 2008
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10. Dinâmica populacional e Atherinella brasiliensis (Quoy &Gaimard, 1824) da praia de Itamambuca, Ubatuba (SP) / Populacional dynamic of the Atherinella brasiliensis (Quoy &Gaimard, 1824) from Itamambuca beach, Ubatuba (SP)
The present study analyzed the life history and metal levels of Atherinella brasiliensis from Itamambuca beach, Ubatuba (SP). Surveys were conducted monthly, in diurnal and nocturnal periods, between September 2003 and February 2005, in four stations at the beach and one at the Itamambuca river, using beach seine. Individuals showed daily migration into the
Publicado em: 2007
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11. Influência da auto seleção à luz no ritmo circadiano de atividade motora em Callithrix Jacchus / The influence of self-selection of light on motor activity circadian rhythm in Callithrix jacchus
Marmosets, Callithrix jacchus, are strictly diurnal animals. The motor activity rhythmicity is generated by the circadian timing system and is modulated by environmental factors, mainly by photic stimuli that compose the light-dark cycle. Photic stimuli can reset the biological oscilators changing activity motor pattern, by a mechanism called entrainment. Ot
Publicado em: 2006
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12. Fecal androgen levels in common marmoset (Callithrix jacchus) males living in captive family groups
In captive common marmoset groups, the reproductive inhibition observed in subordinate female seems to be a result of olfactory, visual and behavioral cues from the dominant female. However, few studies have examined the relationship among adult males living in the same social group. These studies have shown that reproductive failure among peer males seems t
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-01