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| Registros recuperados: 122 | |
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| Rodrigues,Paulo Hercílio Viegas. |
| The occurrence of somaclonal variation is described in various cultures of agronomic interest. Such variation can be of benefit in the development of new flower varieties. In this study, the occurrence of somaclonal variation in micropropagated changes of Heliconia bihai cv. Lobster Claw I was investigated. Stem apexes were introduced in MS culture media with the addition of 2.5 mg L-1 of benzylaminopure (BAP) and 500 mg L-1 of sodium cefotaxime. After selecting the apex stem, it was sub-cultivated in MS media and supplemented with 4.0 mg L-1 of BAP to induce side buds. To conduct the trial, 2,000 plants were selected and compared with plants originated from rhizomes. To calculate the percentage of the variants, the plant stature, the form and color of... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Tissue culture; Flower growing; Variability. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000600017 |
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| Gerin, R.; Poulain, P. -m.; Taupier-letage, Isabelle; Millot, C.; Ben Ismail, S.; Sammari, Cherif. |
| Within the framework of the EGITTO/EGYPT programs, the spatial structure and the temporal variability of the surface circulation in the eastern basin of the Mediterranean Sea was studied with satellite-tracked drifters. A total of 97 drifters drogued to 15-m nominal depth were released between September 2005 and March 2007, regularly along ship-of-opportunity routes in the Sicily Channel and within specific structures during dedicated campaigns in the Levantine sub-basin. This study complements previous ones in the former and in the Ionian, but it is the first one in the latter. After editing and low-pass filtering, the drifter trajectories were used to estimate pseudo-Eulerian statistics: mean current, variance ellipses, mean and eddy kinetic energies. A... |
| Tipo: Text |
Palavras-chave: Lagrangian drifters; General circulation; Undrogued drifters; Sea; Variability; Features; Basin; Model; Dynamics. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00204/31480/29891.pdf |
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| Nwankwo, Uche M.; Wolfgang, Bokelmann. |
| This paper is aimed at relating income fluctuation with adoptable innovations, adopter category and their access to some variables than those explained in the neoclassical economics principle of labor market demand and supply equilibrium. Using a quantitative and qualitative case study of some farmers in two States, we considered whether respondents are earning enough income and what constraints they face. The von Hipple’s lead user concept and decision model of risk aversion under uncertainty were used to explain causes of variability. Notably, farmers with enough steady income have access to market, various information and are less risk averse. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Variability; Information; Income; Adoption; Market. |
| Ano: 2008 |
URL: http://purl.umn.edu/48101 |
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| Monaco, André; Peruzzi, Stefano. |
| The papers presented in this volume represent only a small part of the results obtained within the scope of the first integrated programme concerning the Mediterranean Sea. The latter is considered as a downscaled model of the ocean system, and a regional sea for the targeted projects supported by the European Commission. Whatever the domain is, the variability of the system appeared as a major feature. Consequently, this theme has been selected, among the main initial objectives, as the central subject of this volume. Spatial and temporal variabilities are considered, at different scales and at different (water, particles, sediment, trophic) levels of the marine ecosystem. In the hereafter contributions, one will find the long-term (millenar, secular and... |
| Tipo: Text |
Palavras-chave: Climate; Pluridisciplinary; Variability; Mediterranean; Marine system. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-783.pdf |
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| Naranjo, Ch.; Tapia, M.E.. |
| In 2011, in the Bay of Manta was presented a high diversity of phytoplankton species, determining a total of 75 species, 29 groups for the zooplankton, which were identified to species level the Phylum Chaetognatha identified 6 species and Cladocera with 2 species. The seasonal time during 2011, did not influence the average abundances of the dominant species of phytoplankton and zooplankton, using the student T Test statistic with 95% confidence However specific tests were performed between different stations have a greater diversity of species and stations with less diversity, showing a significant difference in the mean of the population of phytoplankton. The oceanographic conditions recorded in the Equatorial Pacific states mainly cooling during... |
| Tipo: Journal Contribution |
Palavras-chave: Variability; Plankton; Chlorophylls; Biomass; Species diversity; Seasons. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5760 |
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| Martínez, R.. |
| Dentro de las actividades científicas contempladas en la VII Expedición Ecuatoriana a la Antártida para enero de 1998 en Buque de Investigación de la Armada B/I Orión efectuó un crucero oceanográfico en el Estrecho Branfield. Se efectuaron 14 estaciones oceanográficas hasta 500 metros, se realizaron mediciones de corriente utilizando un perfilador acústico doppler. Tomando como referencia trabajos anteriores en el área en años sin influencia de eventos cálidos se compararon los parámetros físicos. Luego del análisis se concluye que el evento ENSO 97-98 tuvo repercusiones evidentes en el área de estudio manifestada en dos aspectos básicos: El incremento de la temperatura y la disminución de la salinidad a nivel superficial. Esta variación habría generado un... |
| Tipo: Journal Contribution |
Palavras-chave: Variability; Thermohaline circulation; Salinity; Water masses; El Nino phenomena; Cruises; Research vessels; Salinity. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/3838 |
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| Martínez, R.. |
| Dentro de las actividades científicas contempladas en la VII Expedición Ecuatoriana a la Antártida para enero de 1998 en Buque de Investigación de la Armada B/I Orión efectuó un crucero oceanográfico en el Estrecho Branfield. Se efectuaron 14 estaciones oceanográficas hasta 500 metros, se realizaron mediciones de corriente utilizando un perfilador acústico doppler. Tomando como referencia trabajos anteriores en el área en años sin influencia de eventos cálidos se compararon los parámetros físicos. Luego del análisis se concluye que el evento ENSO 97-98 tuvo repercusiones evidentes en el área de estudio manifestada en dos aspectos básicos: El incremento de la temperatura y la disminución de la salinidad a nivel superficial. Esta variación habría generado un... |
| Tipo: Journal Contribution |
Palavras-chave: Variability; Thermohaline circulation; Salinity; Water masses; El Nino phenomena; Cruises; Research vessels; Salinity. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/3838 |
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| Valdés, E.; Villafuerte, V.; Domínguez, H.; Pérez, A.. |
| Se analizó la diversidad de la fauna acompañante del camarón en la pesquería del Golfo de Ana María (plataforma suroriental cubana), en términos de la variabilidad temporal de los grupos taxonómicos que la integran y la abundancia relativa de las especies presentes, en particular de la ictiofauna. En el período 2002-2009, los peces fueron el principal integrante de la fauna acompañante del camarón en 82 %, seguido en orden por los crustáceos, moluscos, poríferos y equinodermos con cifras bajas. Resultó poca variabilidad entre los niveles de representatividad de los grupos taxonómicos del período 2002-2008 respecto al 2009. Se determinaron nueve especies de peces representativas (85 % de la captura), siendo dominantes la mojarra (Gerres cinereus), la... |
| Tipo: Journal Contribution |
Palavras-chave: Variability; By-catch; Relative abundance. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4647 |
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| Zuniga-Arias, Guillermo; Ruben, Ruerd. |
| Produce quality is one of the features of any commodity that everyone has an opinion about, but quality is a complex concept. In one hand, quality is the consumer perception about a certain commodity an as well it is a relationship between all the intrinsic attributes of the commodity. It is argued that homogeneous management activities will increase the quality of the commodity. Reducing waste for example, but in a more generic way will reduce the variability of the commodity plus meeting the costumer needs and preferences. In this experimental article we try to disentangle the managerial activities that have an effect on the variability of the quality. For this purpose we have make use of the dispersion statistics... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Variability; Supply Chain; Quality; Management; Agribusiness. |
| Ano: 2007 |
URL: http://purl.umn.edu/9398 |
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| Baley, Christophe; Gomina, Moussa; Breard, Joel; Bourmaud, Alain; Davies, Peter. |
| Flax fibres are a promising reinforcement in the development of biocomposites and are finding new applications in transport structures. However, there is a perceived problem with plant fibres related to the variability of the properties of these natural materials. This paper describes the factors which affect variability, from plant growth conditions to fibre sampling and testing. A large number of test results are presented (characterization of elementary fibres, bundles, assemblies of bundles, and unidirectional composites), and it is shown that provided fibre supply is carefully controlled, characterization procedures are appropriate, and manufacturing processes are optimal then excellent composite properties can be achieved with low variability. |
| Tipo: Text |
Palavras-chave: Flax fibre; Composite; Variability; Mechanical properties. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00593/70488/68656.pdf |
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| Abbud,C.M.M.; Cruz,A.A.V.. |
| The Vernier acuity of 50 normal untrained subjects (20 males and 30 females) was measured by the method of adjustment. Subjects were divided into five age ranges with 10 subjects in each age group: 5-10, 11-20, 21-30, 31-40, and 41-50 years. All subjects had normal visual acuity (20/20) and volunteered to participate in the experiment. Children were selected from a local school and adults recruited from the technical staff of the Department of Ophthalmology of the School of Medicine. Vernier acuity was higher in adults compared to children. Intraindividual variability was high and it was estimated that for most individuals of all age groups a range of 100 to 700 trials was necessary to obtain a mean with a precision of 10%. These results suggest that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vernier acuity; Variability; Age. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000200011 |
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| Hufnagl, Marc; Payne, Mark; Lacroix, Genevieve; Bolle, Loes J.; Daewele, Ute; Dickey-collas, Mark; Gerkema, Theo; Huret, Martin; Janssen, Frank; Kreus, Markus; Paetsch, Johannes; Pohlmann, Thomas; Ruardij, Piet; Schrum, Corinna; Skogen, Morten D.; Tiessen, Meinard C. H.; Petitgas, Pierre; Van Beek, Jan K. L.; Van Der Veer, Henk W.; Callies, Ulrich. |
| Hydrodynamic Ocean Circulation Models and Lagrangian particle tracking models are valuable tools e.g. in coastal ecology to identify the connectivity between offshore spawning and coastal nursery areas of commercially important fish, for risk assessment and more for defining or evaluating marine protected areas. Most studies are based on only one model and do not provide levels of uncertainty. Here this uncertainty was addressed by applying a suite of 11 North Sea models to test what variability can be expected concerning connectivity. Different notional test cases were calculated related to three important and well-studied North Sea fish species: herring (Clupea harengus), and the flatfishes sole (Solea solea) and plaice (Pleuronectes platessa). For sole... |
| Tipo: Text |
Palavras-chave: Ocean circulation; Lagrangian approach; Variability; Marine protected areas; Renewable energy; Wind park; Model intercomparison; Ensemble. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00385/49660/50198.pdf |
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| Registros recuperados: 122 | |
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