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| Registros recuperados: 58 | |
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| Trautmann,Ana P. B.; Silva,José A. G. da; Binelo,Manuel O.; Valdiero,Antonio C.; Henrichsen,Luana; Basso,Natiane C. F.. |
| ABSTRACT Fuzzy logic can simulate wheat productivity by assisting crop predictability. The objective of the study is the use of fuzzy logic to simulate wheat yield in the conditions of nitrogen use, together with the effects of air temperature and rainfall, in the main cereal succession systems in Southern Brazil. The study was conducted in the years 2014, 2015 and 2016, in Augusto Pestana, RS, Brazil. The experimental design was a randomized block design with four repetitions in a 4 x 3 factorial scheme for N-fertilizer doses (0, 30, 60, 120 kg ha-1) and nutrient supply forms [100% in phenological stage V3 (third expanded leaf); (70%/30%) in the phenological stage V3/V6 (third and sixth expanded leaf) and; fractionated (70%/30%) at the phenological stage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Temperature; Precipitation; Fuzzy logic; Modeling. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000100044 |
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| Cardozo,Nilceu Piffer; Sentelhas,Paulo Cesar. |
| The lack of information about the effects of cultivars, crop age and climate on the sugarcane (Saccharum ssp.) crop yield and quality has been the primary factor impacting the sugar-ethanol sector in Brazil. One of the processes about which we do not have a satisfactory understanding is sugarcane ripening and the effects of cultivars, crop age and climate on that. Sugarcane ripening is the process of sucrose accumulation in stalks, which is heavily influenced by several factors, mainly by climatic conditions such as air temperature and water deficits. Because it is a complex process, studies of the variables involved in sugarcane ripening can provide important information, resulting in a better use of commercial cultivars, bringing advantages to growers,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum spp; Air temperature; Precipitation; Water deficit; Sucrose. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000600011 |
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| Pinheiro,Daniel Teixeira; Dias,Denise Cunha Fernandes dos Santos; Medeiros,André Dantas de; Ribeiro,João Paulo Oliveira; Silva,Felipe Lopes da; Silva,Laércio Junio da. |
| ABSTRACT: Successive cycles of water absorption and loss favor weathering deterioration, one of the main factors that affect the quality of soybean seeds. This study evaluated the physiological, physical, and morpho-anatomical changes in soybean seeds under weathering deterioration at the pre-harvest phase. Six soybean cultivars (BMX Apolo, DM 6563, NS 5959, NA 5909, BMX Potência, and TMG 1175) were produced in a greenhouse and underwent weathering deterioration through a rainfall simulation system, applying 0, 60, 120, and 180 mm of precipitation at pre-harvest phase. Each rainfall level was divided into two applications at an interval of 72 h: 60 mm (30 + 30), 120 mm (60 + 60), and 180 mm (90 + 90). After harvest, the seeds were evaluated for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max L.; X-ray; Anatomy; Precipitation; Physiological quality. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000700602 |
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| Galli,Juliana Altafin; Michelotto,Marcos Doniseti; Bernardes-Soares,Maria Beatriz; Mello-Martins,Antonio Lucio; Fischer,Ivan Herman. |
| Abstract Guava (Psidium guajava L.) presented prominence among the tropical fruit. Guava exports are still unimpressive, because of the quarantine pests, among them the fruit flies. The present research had as objective to evaluate the population fluctuation of fruit flies Anastrepha spp. and the fruits infestation caused in guava accesses cultivated in organic system, and study the possible correlations between this pest and meteorological factors. To estimate population fluctuation, 20 yellow sticky traps were used. The reviews were initiated in April 2013, for 378 days. The traps were kept in the field for the entire duration of the experiment, and they were reviewed every 14 days in most cases, during replacement of traps for new ones. With the data,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Psidium guajava; Precipitation; Temperature; Varietal resistance. |
| Ano: 2019 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122019000100009 |
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| Albrecht,Rachel Ifanger; Silva Dias,Maria Assunção Faus da. |
| The distinction between convective and stratiform precipitation profiles around various precipitating systems existent in tropical regions is very important to the global atmospheric circulation, which is extremely sensitive to vertical latent heat distribution. In South America, the convective activity responds to the Intraseasonal Oscillation (IOS). This paper analyzes a disdrometer and a radar profiler data, installed in the Ji-Paraná airport, RO, Brazil, for the field experiment WETAMC/LBA & TRMM/LBA, during January and February of 1999. The microphysical analysis of wind regimes associated with IOS showed a large difference in type, size and microphysical processes of hydrometeor growth in each wind regime: easterly regimes had more turbulence... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intraseasonal oscillation; Drop size distribution; Precipitation; Profiler radar; Disdrometer. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672005000200007 |
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| FERRO MUÑOZ,Natalia; GIRALDO,Alan; MURILLO GARCÍA,Oscar Enrique. |
| ABSTRACT The present study describes composition and trophic structure, and assesses the effect of environmental temperature and rainfall on the pattern of nocturnal activity of understory bats in an Andean forest, in the first half of the night. Seven sampling events were conducted, lasting six nights each one. Ten mist nets were used to capture bats, which were checked every hour between 18:00 and 00:00 hours. Bat species, sex and capture time were registered. In addition, environmental temperature and rainfall were also recorded during sampling. The bat assemblage of the understory of the study area was represented mostly by frugivore species, within this guild there was a lower richness of nomadic than sedentary species. For the first half of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental temperature; Precipitation; Trophic levels. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000200170 |
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| Menezes,Isiara Silva; Couto-Santos,Ana Paula Lima do; Funch,Ligia Silveira. |
| ABSTRACT We compared the reproductive phenology and floral visitors of Eschweilera tetrapetala growing along the edge and in the interior of a submontane forest in the Chapada Diamantina mountains, Bahia State, Brazil. We sought to determine if there were inter-annual differences in intensity and seasonality associated with environmental conditions, and if there were differences in floral visitors between the two environmental contexts. Phenological observations were performed for three years, and included the occurrence of an El Niño event. We applied circular statistics to detect seasonal trends, performed cross correlations between phenophases and climate, Kruskal-Wallis and Wilcoxon signed-rank tests for inter-annual variation, and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: El Niño; Eschweilera tetrapetala; Floral visitors; Linear edge effects; Phenology; Precipitation; Seasonality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000100001 |
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| LIMA,RAFAEL P.C.; SILVA,DEMETRIUS D. DA; MOREIRA,MICHEL C.; PASSOS,JÉSSICA B.M.C.; COELHO,CLÍVIA D.; ELESBON,ABRAHÃO A.A.. |
| Abstract: In order to characterize the occurrence and intensity of droughts in the Doce River Basin, as well as to develop a system for its classification, four different drought indexes were evaluated: Percent of Normal Precipitation (PNP), Deciles Method (DM), Rainfall Anomaly Index (RAI) and Standardized Precipitation Index (SPI). The indices were calculated annually, based on precipitation data from 89 rainfall stations of the Brazilian National Water Agency (ANA). Nine analysis units (AUs) were determined in the basin and the Thiessen Polygons method was used to obtain the average precipitation in the respective drainage areas. The indices were calculated for each AU and then related to the drought intensity classes. An overall classification of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climatic condition; Doce river; Precipitation; Rainfall season; River basin. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100852 |
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| GOLUNSKI,SIMONE; SILVA,MARCELI F.; MARQUES,CAMILA T.; ROSSETO,VANUSA; KAIZER,ROSILENE R.; MOSSI,ALTEMIR J.; RIGO,DIANE; DALLAGO,ROGÉRIO M.; DI LUCCIO,MARCO; TREICHEL,HELEN. |
| ABSTRACT The present study evaluated the purification of inulinase by changing the ionic strength of the medium by addition of NaCl and CaCl2 followed by precipitation with n-propyl alcohol or iso-propyl alcohol. The effects of the concentration of alcohols and the rate of addition of alcohols in the crude extract on the purification yield and purification factor were evaluated. Precipitation caused an activation of enzyme and allowed purification factors up to 2.4-fold for both alcohols. The purification factor was affected positively by the modification of the ionic strength of the medium to 0.5 mol.L-1 NaCl before precipitation with the alcohol (n-propyl or iso-propyl). A purification factor of 4.8-fold and an enzyme yield of 78.1 % could be achieved by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inulinases; Ionic strength; Precipitation; Low cost.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100057 |
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| Pizarro,Roberto; Valdés,Rodrigo; García-Chevesich,Pablo; Vallejos,Carlos; Sangüesa,Claudia; Morales,Carolina; Balocchi,Francisco; Abarza,Alejandro; Fuentes,Roberto. |
| The study and analysis of precipitation has become a crucial tool in understanding the temporal and spatial behavior of water resources, in terms of availability and impact on extreme events. The objective of this study was to evaluate different rainfall parameters (intensities for 1-h duration D = 1 h and return periods of T = 5 and 100 yr, and mean annual precipitation) for different latitudinal and climatic zones in Chile. We analyzed the information recorded on thousands of pluvial bands and rain gauges for 49 stations; this because it is unclear how rainfall intensities change along the country (though total amounts do), in addition to a lack of literature focused on ranges and amounts on the behavior of rainfall variables. The Gumbel probability... |
| Tipo: Journal article |
Palavras-chave: Precipitation; Frequency-duration-intensity curves; IDF curves; Rainfall intensity. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200014 |
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| Registros recuperados: 58 | |
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