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Classificação de embriões bovinos produzidos in vivo. Infoteca-e
VIANA, J. H. M..
bitstream/item/65449/1/COT-59-Classificacao-de-embrioes.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Classificação de embriões; PIV.
Ano: 2009 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/853312
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Desenvolvimento de embriões produzidos in vitro da Raça Gir e Holandesa criadas em clima tropical. Infoteca-e
VIANA, J. H. M.; CAMARGO, L. S. de A.; SÁ, W. F. de; FERREIRA, A. de M.; FREITAS, C. de.
bitstream/item/89798/1/BOP-22.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: PIV; Bovinos leiteiros - melhoramento genético.; Reprodução Animal..
Ano: 2007 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/595702
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Étude expérimentale de la turbulence dans les zones à forts courants et de son impact sur les hydroliennes ArchiMer
Ikhennicheu, Maria.
French waters have a strong potential for tidal turbines applications. In these areas of strong currents, intense velocity fluctuations are observed in the water column. They ultimately come from variations in seabed bathymetry and can have a strong impact on tidal turbine energy production and fatigue. In order to understand the turbulent structures generation in the wake of obstacles and to build a data base for future numerical studies, the Alderney Race conditions are reproduced experimentally, in a wave and current tank, in Froude similitude and with a Reynolds number as high as possible. In this study, real bathymetric variations are represented using canonical elements : a cube, a cylinder, an inclined plane or a combination of all three. Cases with...
Tipo: Text Palavras-chave: Turbulence; Essais expérimentaux; Hydroliennes; Obstacles; Sillage; PIV; LDV; POD; Turbulence; Experimental trials; Tidal turbines; Obstacles; Wake; PIV; LDV; POD.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00590/70177/68193.pdf
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Experimental analysis of the floor inclination effect on the turbulent wake developing behind a wall mounted cube ArchiMer
Ikhennicheu, Maria; Gaurier, Benoit; Druault, Philippe; Germain, Gregory.
The present study aims at investigating turbulence characteristics in high flow velocity areas like those suitable for marine energy application. The Reynolds number, based on the rugosity height and mean flow velocity, is rather high: . For that purpose, experiments are carried out in a flume tank with as high as achievable in Froude similitude (in the tank: and ). Obstacles are canonical wall-mounted elements chosen to be representative of averaged bathymetric variations: a cube and a cube followed by an inclined floor. First, the wake topology past a canonical wall-mounted cube is illustrated from PIV measurements. Results show a flow behaviour already observed in the literature but for different upstream conditions ( and turbulence intensity). Second,...
Tipo: Text Palavras-chave: Turbulence; Experimental trials; Wall-mounted obstacles; PIV; POD; Quadrant method.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00449/56050/57570.pdf
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Experimental study of coherent flow structures past a wall-mounted square cylinder ArchiMer
Ikhennicheu, Maria; Germain, Gregory; Druault, Philippe; Gaurier, Benoit.
In high flow velocity areas like those suitable for tidal applications, turbulence intensity is high and flow variations may have a major impact on tidal turbines behaviour. Large boils that can be observed at the sea surface are emitted from the sea floor and may interact with the tidal turbines. These boils have then to be characterized. The Reynolds number, based on the rugosity height and the mean flow velocity, is rather high in this context: Re ¼ 2:5 107. For that purpose, experiments are carried out in a flume tank with Re as high as achievable in Froude similitude (in the tank: Re ¼ 2:5  105 and Fr ¼ 0:23) in order to study coherent flow structures emitted behind seabed obstacles. The obstacle is here a canonical square wall-mounted cylinder chosen...
Tipo: Text Palavras-chave: Turbulence; Experimental trials; Wall-mounted cylinder; PIV; LDV; POD; Lamb-Oseen.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00494/60527/64189.pdf
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Experimental study of the bubble sweep-down phenomenon on three bow designs ArchiMer
Mallat, Bachar; Germain, Gregory; Gaurier, Benoit; Druault, Philippe; Billard, Jean-yves.
The bubble sweep-down phenomenon around the oceanographic research vessels generates acoustic perturbations. A specific experimental protocol has been developed in a wave and circulating tank to study this phenomenon. This protocol is used to carry out trials on three different ship models in order to study the influence of the bow geometry on the bubble generation. For different test configurations, bubble clouds are described and compared in terms of area, maximal depth and vertical velocity to highlight bubble cloud dynamics surrounding the three ship models. The relation between the hydrodynamic flow field and the bubble generation is studied by means of Particle Image Velocimetry (PIV) measurements to study the phenomenon by the use of phase averaged...
Tipo: Text Palavras-chave: Bubble sweep-down; Experimental trials; Bow geometry; Bubble cloud dynamics; PIV.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00412/52329/53360.pdf
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Interferon tau secretion in cattle embryos in vitro fertilized before and after cryopreservation Arq. Bras. Med. Vet. Zootec.
Araújo,M.C.C.; Vale Filho,V.R.; Ferreira,A.M.; Sá,W.F.; Barreto Filho,J.B.; Camargo,L.S.A.; Serapião,R.V.; Silva,M.V.G.B..
The effect of cryopreservation in IFN-tau, from bovine embryos produced in vitro was evaluated. Two treated groups (G1= fresh bovine embryos, n=59 and G2= freezed embryos, n=84) were used to study the effect of cryopreservation on IFN-tau secretion. After reaching the blastocyst phase, the embryos were kept on individual culture for additional period of 7 days. On days 3 and 7 after the beginning of embryos cultivation, samples of the media culture were taken for IFN-tau secretion titration. Oocysts taken from follicles ranging from 3 to 5mm in diameter were obtained from ovaries of females at slaughterhouse. The embryos were frozen, after being dehydrated with ethylene glycol (1.8m), conditioned on 0.5ml palletes and frozen. Frozen embryos secreted lower...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bovine; Embryo; PIV; Interferon-tau.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000600008
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Phase-averaged mean properties of turbulent flow developing around a fluttering sheet of net ArchiMer
Bouhoubeiny, Elkhadim; Druault, Philippe; Germain, Gregory.
Time-Resolved Particle Image Velocimetry (PIV) measurements are performed to investigate the hydrodynamic flow interaction with a representative piece of fishing net structure. Using the advanced post-processing mathematical tool based on Proper Orthogonal Decomposition, the phase averaged mean properties of turbulent flows are extracted from PIV database, demonstrating the existence of a Turbulent Boundary Layer (TBL) flow developing all around the sheet of net. The results also show that the mesh opening and so the turbulent flow passing through the structure are strongly influenced by the structure oscillations. This work allows us to demonstrate that the drag computation of fishing gear, commonly based on uniform velocity, needs to consider not only...
Tipo: Text Palavras-chave: Fishing net structure; Hydrodynamics; PIV; Turbulent boundary layer flow.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00184/29552/27878.pdf
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Punção folicular e produção in vitro de embriões em vacas Gir submetidas a estimulação hormonal. Infoteca-e
SÁ, W. F. de; RAMOS, A. de A. R.; FERREIRA, A. de M.; CAMARGO, L. S. A.; VIANA, J. H. M. V..
bitstream/item/89781/1/BOP-14.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Bovino de leite; Raça Gir; Produção in vitro de embriões; PIV; Punção folicular; Estimulação hormonal.
Ano: 2004 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/594944
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Transporte de oócitos bovinos em meio de maturação sem controle de atmosfera gasosa Ciência Rural
Leivas,Fábio Gallas; Brum,Daniela dos Santos; Mezzalira,Alceu; Pilla,Luis Fernando Cáceres; Bernardi,Mari Lourdes; Rubin,Mara Iolanda Batistella; Silva,Carlos Antonio Mondino.
Oócitos (n=1177) bovinos obtidos da aspiração de folículos com diâmetro entre 2 e 8mm, de ovários de matadouro foram divididos aleatoriamente em quatro tratamentos com 11 repetições. Os oócitos foram maturados por 24h em TCM-199 Sais de Earle, acrescido de 25mM de bicarbonato de sódio, 25mM de HEPES, rFHS-h, Soro de Vaca em Estro (SVE) e piruvato, em estufa a 39ºC, com 5% de CO2 em ar e umidade saturada (Grupo Controle, n=296) ou, submetidos ao transporte simulado por 6 (T6, n=286), 12 (T12, n=294) ou 18h (T18, n=301) em meio de maturação TCM+HEPES, em banho-maria a 39ºC, com os mesmos componentes utilizados para o Grupo Controle, porém com apenas 1mM de bicarbonato. Decorrido cada período de transporte, os mesmos foram transferidos para placas com meio de...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oócitos bovinos; Hepes; OPU; PIV; Transporte.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000100034
Registros recuperados: 10
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