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| Registros recuperados: 473 | |
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| Sartori,G.M.S.; Marchesan,E.; Azevedo,C.F.; Filho,A.C.; Roso,R.; Coelho,L.L.; Oliveira,M.L.. |
| Irrigated rice sowing season and red rice competition are among the main factors affecting grain yield. The objective of this work was to evaluate the sowing date of irrigated rice and moments of application of the herbicide imazapyr + imazapic to control red rice management and irrigated rice grain yield. Eight experiments were performed at the following dates (09/30, 10/19, 11/08 and 12/01) for the 2010/2011 harvest season and (09/27, 10/17, 11/08 and 12/05) for the 2011/2012 harvest season. The treatments were: application of the herbicide imazapyr + imazapic at doses of 105+35 g ha-1 in pre-emergence (PRE); 52.5+17.5 g ha‑1 in pre-emergence and 52.5+17.5 g ha-1 in post-emergence (PRE + POST); and 105+35 g ha-1 in post- emergence (POST), and a control... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Weed; Herbicide; Chemical control; Temperature; Solar radiation; Oryza sativa. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300015 |
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| RONDON,JOSIMARA N.; SASSAKI,REGINA M.; ZAIDAN,LILIAN B.P.; FELIPPE,G.M.. |
| Bidens gardneri is a herbaceous species of the cerrados, whose seeds are light sensitive at 25 °C, but they become indifferent to light when stored in soil. In this work the effects of moisture content, temperature and light (during storage) upon light sensitivity during germination were studied. Ripe achenes were collected in the cerrados of Itirapina and Moji Guaçu, State of São Paulo, Brazil. The storage conditions of the achenes varied in each experiment. Achenes were stored in darkness or light, in closed bottles, at 4 °C, 20/30 °C or 25 °C. Achenes were imbibed for 24 h at 4 °C, 25 °C or 20/30 °C (in darkness) and then stored for 1, 10, 20, 30 and 40 days (40 days only for 4 °C and 25 °C). Germination tests were conducted at 25 °C and 20/30 °C. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Light sensitivity; Storage; Moisture content; Temperature. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000100004 |
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| Claireaux, Guy; Theron, Michael; Prineau, Michel; Dussauze, Matthieu; Merlin, Francois Xavier; Le Floch, Stephane. |
| The worldwide increasing recourse to chemical dispersants to deal with oil spills in marine coastal ecosystems is a controversial issue. Yet, there exists no adequate methodology that can provide reliable predictions of how oil and dispersant-treated oil can affect relevant organism or population-level performance. The primary objective of the present study was to examine and compare the effects of exposure to untreated oil (weathered Arabian light crude oil), chemically dispersed oil (Finasol, TOTAL-Fluides) or dispersant alone, upon the ability of fish for environmental adaptation. To reach that goal, we implemented high-throughput, non-lethal challenge tests to estimate individual hypoxia and heat tolerance as surrogate measures of their capacity to... |
| Tipo: Text |
Palavras-chave: Oil-spill; Dispersant; Fish; Temperature; Hypoxia; Survival; Growth; Environmental adaptation ability; Darwinian fitness. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00137/24831/23045.pdf |
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| SUZUKI, Yo; WATANABE, Hiroyuki; FUKUI, Yutaka; 福井, 豊. |
| The aim of this study was to investigate whether seasonal changes affected in vitro developmental competence of porcine oocytes. The relationship between atmospheric temperature and embryonic development of in vitro matured porcine oocytes following intracytoplasmic sperm injection was examined throughout the year. The blastocyst rate (31.1%) in winter (mean atmospheric temperature during December to February: -3.8 C) was significantly higher (P<0.05) than those of other seasons in 2008/2009 (19.7-23.5%; 6.3-17.5 C). The monthly mean blastocyst rates were negatively correlated with the temperatures (r=-0.5944, P<0.05). The results of the present study suggest that porcine embryos could be produced throughout the year, but the in vitro production... |
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Palavras-chave: Embryonic development; Pig; Seasonal changes; Temperature. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2814 |
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| Gagnaire, Beatrice; Frouin, Heloise; Moreau, Kevin; Thomas Guyon, Helene; Renault, Tristan. |
| The Pacific oyster, Crassostrea gigas, is extensively cultivated and represents an important economic activity. Oysters are reared in estuarine areas, subjected to various biotic and abiotic factors. One of the limiting factors in aquaculture is mortality outbreaks, which may limit oyster production, and the causes of these outbreaks are not completely understood. In this context, the effects of temperature and salinity on Pacific oyster, C. gigas, haemocytes, were studied. Haemocytes are the invertebrate blood cells and thus have been shown to be involved in defence mechanisms. Flow cytometry was used for monitoring several haemocyte parameters. An increase of temperature induced an increase of haemocyte mortality, in both in vitro and in vivo... |
| Tipo: Text |
Palavras-chave: Cellular activity; Flow cytometry; Salinity; Temperature; Haemocyte; Crassostrea gigas; Pacific oyster. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-934.pdf |
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| Person, Jeannine; Buchet, Vincent; Vincent, Benoit; Le Delliou, Herve; Quemener, Loic. |
| Growth of juvenile pollack was assessed at five constant temperatures (9, 12, 15, 18 and 21 degrees C) in an 84-day trial. Duplicate groups of 75 fish (initial weight 143 +/- 2 g) were held in O-2 saturated water (102-103% saturation) and fed to apparent satiation. Growth increased as temperature increased from 9 degrees C up to a plateau at 12-15 degrees C (NS differences between 12 and 15 degrees C) followed by a decrease from 18 degrees C. No growth occurred at 21 degrees C. For the overall period, specific growth rates were 0.52% and 0.53% day(-1) at 12 and 15 degrees C compared to 0.40% day(-1) at 18 degrees C. Feed intake was maximum at 15-18 degrees C (0.68-0.69% day(-1)) and it was significantly lower at 21 degrees C (0.45% day(-1)). Apparent feed... |
| Tipo: Text |
Palavras-chave: Feed efficiency; Growth; Temperature; Pollack. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1122.pdf |
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| Person, Jeannine; Le Bayon, Nicolas. |
| This paper presents a non invasive, rapid and reliable way to quantitatively assess fin erosion in sea bass (Dicentrarchus labrax). The method is based on a visual assessment of fin profile and area loss of all fins except the anterior dorsal, on a scale from 0 to 4 in comparison with a perfect fin. The effects of stocking density (SD) and temperature on fin damage were investigated under experimental conditions (100-250 g fish). Over a 4-month period, mean erosion index (mean erosion level of all fins) was 10 times higher at 120 than at 20 kg m(-3), where most fins were undamaged. Damage was also dependent on time and oxygen concentration (35% lower at 53% O-2 saturation than at 105%). Fin condition was also affected by temperature: mean erosion index was... |
| Tipo: Text |
Palavras-chave: Rearing systems; Stocking density; Temperature; Welfare; Fin damage; Sea bass. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6873.pdf |
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| El Cafsi., M.; Kheriji., S.; Masmoudi., W.; Romdhane., M.S.. |
| Le suivi de l’évolution des lipides des alevins de Mugil cephalus en fonction de la salinité et de la température du milieu, montre qu’après acclimatation à 14°C, le rapport acides gras polyinsaturés/acides gras saturés, chez les alevins acclimatés à la basse salinité (0,5‰) augmente de 6,5%. D’autre part, nous avons noté une diminution de 65% de la masse des triacylglycérols et une augmentation de 37% de celle des lipides polaires. Par ailleurs, nous avons relevé que l’abaissement de la température du milieu de 26 à 14°C, entraîne une augmentation plus importante du rapport acides gras polyinsaturés/acides gras saturés à 0,5‰ qu’à 35‰. La diminution de la température du milieu provoque une augmentation respective de 365 et de 53%, de la masse des... |
| Tipo: Journal Contribution |
Palavras-chave: Biochemical composition; Salinity; Lipids; Fry; Fatty acids; Temperature; Accumulation; Mugil cephalus; Http://aims.fao.org/aos/agrovoc/c_35403. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/4296 |
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| Zambrano, E.. |
| Se revisan las características generales de los eventos El Niño en el Pacífico Tropical y la manera como se manifiestan frente a las costas del Ecuador. Se analiza la elevación del nivel del mar en la estación de La Libertad y se compara con el contenido de calor en el Pacífico central. Utilizando la información de las boyas del programa TAO se analiza la propagación de temperatura y altura dinámica desde el Pacífico ecuatorial occidental hasta el borde oriental. De igual manera se analiza el arribo de ondas ecuatoriales al borde oriental del Pacífico y su incidencia en el nivel medio del mar. El Niño 2006-07 concluyó rápidamente y de intensidad débil; puede considerarse como en evento de corta duración que presentó las características generales de otros... |
| Tipo: Journal Contribution |
Palavras-chave: El Nino phenomena; Sea level; Buoys; Rain; Edge waves; Equatorial waves; Temperature; Sea level; Rain; Temperature. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/2337 |
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| Azadbakht, Mohsen; Ziaratban, Armin; Vahedi Torshizi, Mohammad; Aghili, Hajar. |
| In this research, energy and exergy loss were analyzed in the laboratory for the drying of eggplant using a fluidized bed dryer. The drying experiment was conducted at inlet temperatures of 40, 50, and 60 and air velocities of 3, 5, and 7 m/s using samples with diameters of 5, 10, and 13 mm and a height of 1 cm. The effects of temperature, velocity of drying air, and sample size on energy consumption and exergy losses were investigated. The results showed that the minimum energy consumption and exergy losses occurred at a diameter of 13 mm, velocity of 3 m/s, and temperature of 40. Meanwhile, the maximum energy consumption and exergy losses occurred at diameter of 5 mm, velocity of 7 m/s and temperature of 60;. Generally, the results demonstrated that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy utilization; Exergy losses; Eggplant; Fluidized bed dryer; Temperature; Air velocity. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4116 |
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| Jordão Filho,José; Silva,José Humberto Vilar da; Silva,Cidinei Trajano; Costa,Fernando Guilherme Perazzo; Sousa,Janaína Maria Batista de; Givisiez,Patrícia Emília Naves. |
| This study aimed to estimate the energy requirements for maintenance and gain of Japanese and European quails under growth housed in two rearing systems: floor pens and cages. To determine maintenance requirements, two experiments were conducted with birds housed in cages in environmental chambers (experiment 1) and in floor pens at room temperature conditions (experiment 2). The experimental design was completely randomized with four levels of feed supply (100, 75, 50 and 25%) and four repetitions. Energy requirements for maintenance were estimated by the comparative slaughter method through a feeding trial. In experiment 1, 64 Japanese and European quails per treatment were housed in cages of climatic chambers at 18, 24, and 28 °C, while in experiment 2,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding system; Energy; Modeling; Temperature. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100019 |
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| Registros recuperados: 473 | |
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