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| Registros recuperados: 51 | |
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| Téllez Palos, Pablo. |
| Se evaluó el patrón de maduración y el efecto del 1-metilciclopropeno (1-MCP), metil jasmonato (MJ), ethrel y choques de CO2 para reducir los daños frio (DF) en frutos zapote mamey procedente de huertas comerciales de Alpoyeca, Guerrero, México. Los frutos se almacenados por 7, 14 y 21 d a 10ºC y madurados a 23ºC. El patrón maduró 9 y 10 d después de la cosecha, incrementando SST (12,51% a 30,16%), pérdida de peso de 1,067% por día, disminución de la firmeza (38.76 N a 0.84 N), color de naranja moderado a naranja fuerte, mostrando un patrón climatérico con preclimaterio de CO2 y etileno de 26,45 mL kg-1 h-1 y 15,84 µL kg-1 h-1 y máximos de 156,40 mL kg-1 h-1 y 222.69 µL kg-1 h-1 a los 6 d de transferirlos a 23ºC. Las dosis de 600 y 900 nL L-1 de... |
| Tipo: Tesis |
Palavras-chave: Zapote mamey; 1-MCP; CO2; Daños por frío; Maestría; Fruticultura; Chilling injury. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1321 |
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| Costa,Edílson; Leal,Paulo A. M.. |
| Propôs-se avaliar a produção hidropônica de alface-crespa, variedade "Vera", em bancadas inclinadas com canais de 100 mm, utilizando a técnica de filme de solução nutritiva, em resposta à aplicação de dióxido de carbono e ao resfriamento evaporativo. Realizaram-se cinco ciclos de cultivo nos períodos de 20-3 a 17-4-2000 (C1); 25-5 a 29-6-2000 (C2); 13-7 a 21-8-2000 (C3); 27-8 a 2-10-2000 (C4) e 12-12-2000 a 10-1-2001 (C5). Avaliaram-se três casas de vegetação, sendo casa de vegetação sem sistema de resfriamento evaporativo do ar e sem injeção aérea de CO2 (A1); casa de vegetação com injeção aérea de CO2 e sem sistema de resfriamento evaporativo do ar (A2), e casa de vegetação com injeção aérea de CO2 e com sistema de resfriamento evaporativo do ar do tipo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Casa de vegetação; CO2; Climatização. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162009000300003 |
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| Tomazett,Mariana Vieira; Zanoelo,Fabiana Fonseca; Bailão,Elisa Flávia Cardoso; Bailão,Alexandre Melo; Borges,Clayton Luiz; Soares,Célia Maria de Almeida. |
| Abstract Carbonic anhydrases (CA) belong to the family of zinc metalloenzymes that catalyze the reversible hydration of carbon dioxide to bicarbonate. In the present work, we characterized the cDNAs of four Paracoccidioides CAs (CA1, CA2, CA3, and CA4). In the presence of CO2, there was not a significant increase in fungal ca1, ca2 and ca4 gene expression. The ca1 transcript was induced during the mycelium-to-yeast transition, while ca2 and ca4 gene expression was much higher in yeast cells, when compared to mycelium and mycelium-to-yeast transition. The ca1 transcript was induced in yeast cells recovered directly from liver and spleen of infected mice, while transcripts for ca2 and ca4 were down-regulated. Recombinant CA1 (rCA1) and CA4 (rCA4), with 33... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carbonic anhydrases; Paracoccidioides; CO2; Gene expression; Enzyme assay. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000300416 |
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| Cañizares,Kathia A.L.; Rodrigues,João D.; Goto,Rumy; Vilas Bôas,Roberto L.. |
| Com o objetivo de avaliar o efeito da enxertia e do enriquecimento da água de irrigação com dióxido de carbono sobre o teor de N, P, K, Ca, Mg, S, Mn e Zn na parte aérea de plantas de pepino tipo japonês cultivados em ambiente protegido, foram conduzidos experimentos em duas épocas do ano. O delineamento experimental foi em blocos ao acaso com quatro tratamentos e quatro repetições. Os tratamentos foram plantas de pepino enxertadas e não enxertadas, irrigadas com água comum ou enriquecida com CO2, em uma concentração de 1 no primeiro semestre e 0,25 no segundo semestre. No final do ciclo da cultura, o CO2, influenciou unicamente no primeiro semestre os teores de K, Ca, Mg, S e Zn; enquanto o teor de N só alterou no segundo semestre. Não houve padrão de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucumis sativus L; Nutrição; CO2. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362005000100002 |
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| Furlan,Raquel A.; Alves,Dálcio R. B.; Folegatti,Marcos V.; Botrel,Tarlei A.; Minami,Keigo. |
| O experimento foi realizado em Piracicaba (SP), com o objetivo de avaliar os efeitos da aplicação de dióxido de carbono via água de irrigação na produtividade e qualidade de alface cultivada em ambiente protegido. Os tratamentos foram constituídos de dois ambientes protegidos, sendo um com aplicação de CO2 e o outro sem aplicação de CO2, onde se cultivou a alface cultivar Verônica. Cada um dos ambientes foi composto por oito parcelas com dimensões de 1,2 m x 6,0 m e espaçadas de 0,80 m. A cultura foi irrigada com o tubo gotejador "Rain Tape" com vazão de 1,15 L/h, pressão de serviço de 60 kPa e espaçamento entre gotejadores de 0,20 m. As irrigações foram feitas diariamente, tendo em vista o objetivo de aplicação diária da dose de CO2 de 50 L/m²/dia. As... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa L.; Ambiente protegido; CO2; Gotejamento. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362001000100005 |
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| FERNANDES, A. H. B. M.; CARDOSO, M. A.; SOUZA, R. A. C. de; FERNANDES, F. A.; SOARES, M. T. S.; CRISPIM, S. M. A.; GALVANI, F.; LISITA, F. O.. |
| O objetivo deste estudo foi estimar, em condições de laboratório, as taxas de nitrificação e a mineralização de carbono (C) no solo após a aplicação de diferentes doses de dejetos de suínos tratados em biorreatores anaeróbicos. The aim of this work was to evaluate the net nitrification and the C mineralization rates from pig slurry treated in bioreactors and applied to the soil at different doses. |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: CO2; NO3-; Nitrate.; Dióxido de Carbono; Nitrato; Suinocultura.; Carbon dioxide; Swine.. |
| Ano: 2011 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/920832 |
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| Landschuetzer, Peter; Ilyina, Tatiana; Lovenduski, Nicole S.. |
| We use a neural network-based estimate of the sea surface partial pressure of CO2 (pCO(2)) derived from measurements assembled within the Surface Ocean CO2 Atlas to investigate the dominant modes of pCO(2) variability from 1982 through 2015. Our analysis shows that detrended and deseasonalized sea surface pCO(2) varies substantially by region and the respective frequencies match those from the major modes of climate variability (Atlantic Multidecadal Oscillation, Pacific Decadal Oscillation, multivariate ENSO index, Southern Annular Mode), suggesting a climate modulated air-sea exchange of CO2. We find that most of the regional pCO(2) variability is driven by changes in the ocean circulation and/or changes in biology, whereas the North Atlantic variability... |
| Tipo: Text |
Palavras-chave: Ocean; CO2; Variability; Carbon; Climate; Observations. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00675/78733/80972.pdf |
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| Watson, Andrew J.; Metzl, Nicolas; Schuster, Ute. |
| The oceans are an important sink for anthropogenically produced CO2, and on time scales longer than a century they will be the main repository for the CO2 that humans are emitting. Our knowledge of how ocean uptake varies (regionally and temporally) and the processes that control it is currently observation-limited. Traditionally, and based on sparse observations and models at coarse resolution, ocean uptake has been thought to be relatively invariant. However, in the few places where we have enough observations to define the uptake over periods of many years or decades, it has been found to change substantially at basin scales, responding to indices of climate variability. We illustrate this for three well-studied regions: the equatorial Pacific, the... |
| Tipo: Text |
Palavras-chave: CO2; Carbon cycle; Greenhouse gases; Atmospheric oxygen. |
| Ano: 2011 |
URL: https://archimer.ifremer.fr/doc/00144/25561/23702.pdf |
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| Lundberg, L. |
| The net air-sea exchange of CO2 in the ocean area enclosed by the Fram Strait in the north and by the Greenland-Scotland ridge in the south is estimated on the basis of oceanic pCO(2) data from three different expeditions. The data comprise observed pCO(2) as well as pCO(2) calculated from data on dissolved inorganic carbon (C-t), total alkalinity (TA) and pH. Data on atmospheric content of CO2 are available from two of the expeditions and are supplemented with monthly mean values from ocean station ''M'' (66 degrees N, 2 degrees E). Wind speed drawn from a data set with a spatial resolution of 75 km and a temporal resolution of six hours are used in the calculation. The pCO(2) data are interpolated to the same spatial resolution as that of the wind speed... |
| Tipo: Text |
Palavras-chave: CO2; AIR-SEA EXCHANGE; NORDIC SEAS; GAS EXCHANGE. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00098/20882/18496.pdf |
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| Jones, Steve D.; Le Quere, Corinne; Roedenbeck, Christian; Manning, Andrew C.; Olsen, Are. |
| We have developed a statistical gap-filling method adapted to the specific coverage and properties of observed fugacity of surface ocean CO2 (fCO2). We have used this method to interpolate the Surface Ocean CO2 Atlas (SOCAT) v2 database on a 2.5°×2.5° global grid (south of 70°N) for 1985–2011 at monthly resolution. The method combines a spatial interpolation based on a “radius of influence” to determine nearby similar fCO2 values with temporal harmonic and cubic spline curve-fitting, and also fits long-term trends and seasonal cycles. Interannual variability is established using deviations of observations from the fitted trends and seasonal cycles. An uncertainty is computed for all interpolated values based on the spatial and temporal range of the... |
| Tipo: Text |
Palavras-chave: Ocean; CO2; Interpolation. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00293/40403/38961.pdf |
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| Le Traon, Pierre-yves; D'Ortenzio, Fabrizio; Babin, Marcel; Claustre, Hervé; Pouliquen, Sylvie; Le Reste, Serge; Thierry, Virginie; Brault, Patrice; Guigue, Michel; Le Menn, Marc. |
| NAOS (Novel Argo Ocean observing System) is one of the 52 projects selected as part of the Equipex call for proposals from the French programme d'investissements d'avenir. The overall objective of the project is to consolidate and improve the French and European contribution to the international Argo observing system and to prepare the next decade of Argo. The challenge is to set up an effective monitoring of the world ocean and to strengthen French leadership in ocean and climate research and prediction. |
| Tipo: Text |
Palavras-chave: Méthode d'observation océanographique; Réchauffement climatique; Prévision climatique; Salinité de l'eau; Température de l'eau; Océan mondial; Altimètre radar; CO2; Tempête; Cyclone tropical; Mousson; El-Niño; Circulation générale océanique; Climatologie océanographique; Modèle couplé océan-atmosphère; Modèle climatique. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00117/22801/20608.pdf |
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| Ritter, R.; Landschuetzer, P.; Gruber, N.; Fay, A. R.; Iida, Y.; Jones, S.; Nakaoka, S.; Park, G. -h.; Peylin, P.; Roedenbeck, C.; Rodgers, K. B.; Shutler, J. D.; Zeng, J.. |
| The Southern Ocean (SO) carbon sink has strengthened substantially since the year 2000, following a decade of a weakening trend. However, the surface ocean pCO(2) data underlying this trend reversal are sparse, requiring a substantial amount of extrapolation to map the data. Here we use nine different pCO(2) mapping products to investigate the SO trends and their sensitivity to the mapping procedure. We find a robust temporal coherence for the entire SO, with eight of the nine products agreeing on the sign of the decadal trends, that is, a weakening CO2 sink trend in the 1990s (on average 0.22 0.24pgCyr(-1)decade(-1)), and a strengthening sink trend during the 2000s (-0.35 0.23pgCyr(-1)decade(-1)). Spatially, the multiproduct mean reveals rather uniform... |
| Tipo: Text |
Palavras-chave: Southern Ocean; CO2; Observations; SOCOM; Trends; Carbon sink. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00662/77387/79013.pdf |
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| Vazquez-rodriguez, Marcos; Touratier, Franck; Lo Monaco, Claire; Waugh, D. W.; Padin, X. A.; Bellerby, R. G. J.; Goyet, Catherine; Metzl, Nicolas; Rios, Aida F.; Perez, Fiz F.. |
| Five of the most recent observational methods to estimate anthropogenic CO2 (C-ant) are applied to a high-quality dataset from five representative sections of the Atlantic Ocean extending from the Arctic to the Antarctic. Between latitudes 60 degrees N-40 degrees S all methods give similar spatial distributions and magnitude of C-ant. However, discrepancies are found in some regions, in particular in the Southern Ocean and Nordic Seas. The differences in the Southern Ocean have a significant impact on the anthropogenic carbon inventories. The calculated total inventories of C-ant for the Atlantic referred to 1994 vary from 48 to 67 Pg (10(15) g) of carbon, with an average of 54 +/- 8 Pg C, which is higher than previous estimates. These results, both the... |
| Tipo: Text |
Palavras-chave: Deep equatorial atlantic; Northern indian-ocean; Water mass ages; CO2; Sea; Transport; Increase; Tracers; Models. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00202/31313/29724.pdf |
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| Laruelle, Goulven G.; Lauerwald, Ronny; Pfeil, Benjamin; Regnier, Pierre. |
| Over the past decade, estimates of the atmospheric CO2 uptake by continental shelf seas were constrained within the 0.18-0.45 Pg C yr(-1) range. However, most of those estimates are based on extrapolations from limited data sets of local flux measurements (n<100). Here we propose to derive the CO2 air-sea exchange of the shelf seas by extracting 310(6) direct surface ocean CO2 measurements from the global database SOCAT (Surface Ocean CO2 Atlas), atmospheric CO2 values from GlobalVIEW and calculating gas transfer rates using readily available global temperature, salinity, and wind speed fields. We then aggregate our results using a global segmentation of the shelf in 45 units and 152 subunits to establish a consistent regionalized CO2 exchange budget at... |
| Tipo: Text |
Palavras-chave: CO2; Coastal ocean; Carbon cycle. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00293/40426/38969.pdf |
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| Registros recuperados: 51 | |
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