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	Provedor de dados BABT (1) Autor Heo,Moon-Soo (1) Kim,Dong-Hwi (1) Kim,Min-Sun (1) Subramanian,Dharaneedharan (1) Palavra-chave Actinomycete (1) Antioxidant (1) Cytotoxicity (1) Jeju Island (1) Streptomyces carpaticus MK-01 (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2017 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 122 Primeira ... 1 2 3 4 5 6 7 ... Última Models of relations between bacteria and plankton, and regeneration processes in marine planktonic ecosystem. ArchiMer Martin, Y; Lelong, P; Cauchi, B. In order to study bacteria-plankton relationships, experimental and mathematical models were used to stimulate biological processes implicated in plankton ecosystems and to analyze community relationships. The model components are phytoplankton, zooplankton, autotrophic and heterotrophic bacteria, ciliates, nutrients, organic matter and phytoplankton antibiotics. This study shows the importance of some factors affecting bacteria communities dynamics and the bacterial activity in mineralization process. Bacterial populations seem to be controlled essentially by the concentration and chemical composition of organic substrates. Antibiosis and predation show a lesser importance on changes in bacteria communities. Tipo: Text Palavras-chave: Biogeochemistry; Bacteria; Microorganisms; Mathematical models; Mineralization; Ecosystems; Plankton; Ecological associations. Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-982.pdf Donnees sur les gasteropodes dulcicoles de l'ouest de la France: Mise en evidence de cinq groupes d'especes (ACP) ArchiMer Costil, F. 24 Species of Gastropoda, representing 3357 specimens, have been sampled in 57 varied ponds of Brittany (France). The most frequent species (at least in 10% of the samples) are considered according to their average abundance and dominance. The average specific richness of the ponds where the species have been collected is studied. In a second stage, the Gastropoda are analysed by means of a principal component analysis. The 1-2 plane correspond to 87% of the whole variance. This analysis associated with a cluster analysis led to the partition of 5 groups of species. Tipo: Text Palavras-chave: Gastropoda; Frequency analysis; Freshwater molluscs; Fresh water; Check lists; Inventories; Mathematical models; Ponds; Abundance. Ano: 1991 URL: http://archimer.ifremer.fr/doc/1991/acte-1713.pdf Dynamique des eaux (en Baie de Seine): Synthese des discussions ArchiMer Chabertd'Hieres, G. The discussions about "water dynamics" have dealt with the knowledge of long-term water mass circulation (from several days to several months), by the effects of three parameters: tides near limits and in the Seine Bay, turbid freshwater discharge (Seine river) and winds. This communication gives information about Eulerian and Lagrangian drift, used for residual current exhibition. Tipo: Text Palavras-chave: Lagrangian current measurement; Eulerian current measurement; Mathematical models; Coastal zone; Residual flow; Hydrodynamics. Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1271.pdf Une théorie de plaque sandwich ArchiMer Mace, M. The objective of this paper is to present a new two-dimensional plate theory inside which a very thin layer is sandwiched. Based upon a prescribed displacement field and a shear stress field fulfilling continuity conditions at the interfaces, this model takes into account the shearing strain due to the high rigidity ratio between the thick skins and the thin film. It is also shown how the present theory was assessed when calculating a rectangular sandwich plate for which Pagano proposed an "exact" three-dimensional solution. Tipo: Text Palavras-chave: Mathematical models; Strain; Shear strength; Ship technology; Composite materials; Cisaillement; Film mince; Théorie de plaque sandwich; Calculs de structures composites. Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1082.pdf Modeles mathematiques de courants residuels sur le plateau continental nord europeen ArchiMer Djenidi, S; Nihoul, J; Ronday, F; Garnier, Antonin. To study residual currents the authors use mathematical models. The introduction deals with parameters having an influence on this process in the North sea and adjacent seas (shallow environments): tidal residual circulation, limit conditions and winds. Several maps give a representation of results. Tipo: Text Palavras-chave: Tidal currents; Wind driven circulation; Boundary conditions; Mathematical models; Continental shelves; Residual flow. Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1270.pdf Un modèle asymptotique de la plaque stratifiée ArchiMer Kail, R; Lene, F; De Roeck, Y. In order to calculate the behaviour of thin structures of laminated composite materials, a bidimensional plate model is generated by an asymptotic development technique. From a structural analysis by plane finite elements at the middle surface, this model yields the equations leading to the computation, at each point of the laminated material, of the displacement and the stress tensor. After describing the theoretical model, numerical results are compared with the analytical solution of a test problem. Tipo: Text Palavras-chave: Ship technology; Modelling; Mathematical models; Composite materials; Eléments finis; Développement asymptotique; Composites; Plaque. Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1081.pdf Approche experimentale du comportement d'une plaque composite sous effet d'un choc perforant ArchiMer Paris, P; Genin, D; Hamelin, P. Our purpose in this paper is to study the behaviour of composite materials reinforced by glass satin weave 8 fabric under the impact of a projectile. The first part of this paper deals with experimental tests carried out using a servo-hydraulic machine. The hydraulic ram can be programmed to impact the specimen at any desired velocity between a few tenths of a millimetre per minute and 20 m/s. In the second part, these experimental results are compared with the numerical results of bidimensional finite difference code AUTODYN. This program allows the numerical simulation of the penetration of composite plates by projectiles. Tipo: Text Palavras-chave: Ship technology; Collisions; Materials testing; Simulation; Mathematical models; Numerical analysis; Composite materials; Essai de choc; Réponse dynamique; Simulation numérique; Plaque composite; Impact. Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1045.pdf Observations de courant en Baie de Seine ArchiMer Lehir, P; L'Yavanc, J. Results of long-term current measurements in the Seine Bay are presented: (1) tidal flow and propagation of the tide across the bay; (2) ability to predict tidal currents from previous measurements by the means of harmonic analysis; (3) identification of residual flow factors according to a principal component analysis in a complex space; (4) description of the tidal residual flow with large eddies; (5) demonstration of wind effects on currents. Tipo: Text Palavras-chave: Meteorological observations; Mathematical models; Long term records; Residual flow; Current prediction; Tidal currents; Water circulation; Current observations. Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1257.pdf Evaluación de corvina rubia (Micropogonias furnieri) en el área del Río de la Plata y Zona Común de Pesca argentino-uruguaya por medio de un modelo de dinámica de biomasa OceanDocs Carozza, C.R.; Hernandez, D.R.; Perrotta, R.G.. Whitemouth croaker (Micropogonias furnieri)has a broad distribution along the Atlantic coast of the Americas, from Mexico to the south of the Province of Buenos Aires, Argentina. At the southern end of distribution, Argentina and Uruguay catch the species with different commercial fleet types bay or creek, coastal and off-shore and modalities of bottom trawling with doors and paired trawling. Maximum catches of both countries, that reached 60,000 t, were registered between 1995 and 1997. After that period a remarkable decrease was observed, specially in Argentina where catches remained at around 6,000 t over a total of 30,000 t for both countries. The commercial fleet was divided in three categories and the total area of study in three subareas: El Salado,... Tipo: Journal Contribution Palavras-chave: Stock assessment; Catch/effort; Risks; Biomass; Depleted stocks; Mathematical models; Coastal fisheries; Commercial fishing; Stock assessment; Biomass; Mathematical models; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24199; Http://aims.fao.org/aos/agrovoc/c_1696. Ano: 2004 URL: http://hdl.handle.net/1834/1503 Modélisation de l'évolution du trait de côte et de la protection du littoral dans le golfe de Tunis OceanDocs Ben Mouelli, I.; Bejaoui, B.; Raïs, S.; Brahim, M.. Ce travail s’intéresse à l’étude de l’évolution et de la protection du littoral de la banlieue Nord de Tunis par modélisation à l’aide du code UNIBEST. Pour ce faire, une étude bibliographique a été élaborée concernant la morphologie des côtes, les facteurs naturels (houle, marée) l’influençant ainsi que les différents ouvrages de protection utilisés. L’étude du littoral de la banlieue Nord de Tunis a nécessité la subdivision de la région en zones d’étude afin de valider les hypothèses de base du modèle UNIBEST. La procédure de calage est effectuée seulement sur une zone. La modélisation de l’évolution du littoral de la banlieue Nord de Tunis a montré l’existence de deux sites menacés par l’érosion : Le premier site correspond à la côte de Gammarth entre... Tipo: Journal Contribution Palavras-chave: Breaking waves; Breakwaters; Refraction; Mathematical models; Swell; Diffraction. Ano: 2002 URL: http://hdl.handle.net/1834/242 Imbrication d'un modèle de circulation des eaux près des cotes Tunisiennes dans un modèle de circulation de la mer Méditerranée OceanDocs Alioua. M.; Harzallah, A.. La présente étude a pour objectif la mise en place d’un système de modélisation numérique de la dynamique marine près des côtes tunisiennes. Pour cela on imbrique un modèle de circulation de l’eau près des côtes tunisiennes dans un modèle de circulation générale de la mer Méditerranée. La grille du modèle des côtes tunisiennes comporte la possibilité d’augmenter la résolution dans un domaine ciblé. Les conditions initiales pour ce modèle étiré sont obtenues par interpolation des états simulés par le modèle côtier à résolution constante. Vu sa résolution plus élevée, le modèle à grille étirée nécessite un long temps de calcul. Cependant les tests effectués avec ce modèle montrent que des simulations de 20 jours suffisent pour atteindre un équilibre... Tipo: Journal Contribution Palavras-chave: Coastal waters; Mathematical models; Water circulation. Ano: 2008 URL: http://hdl.handle.net/1834/4268 Estandarización del esfuerzo de pesca ejercido sobre el abadejo (Genypterus blacodes) en aguas Argentinas. Período 1986-1996. OceanDocs Cordo, H.D.. If the fishing effort is properly standardized, the catch per unit of effort may be proportional to biomass (C/f=q x B(med)). A multiplicative factorial model was applied to the ling Genypterus blacodes catch and effort data by the Argentine bottom trawl fleet recorded between 1986 and 1996. The relative fishing power of the fleet strata was estimated and the effort standardized to obtain normalized CPUEs. Provided they were estimated in the same spatial and temporal situation, there were no differences between the normalized CPUE and the nominal CPUE because ling is caught mainly as by-catch in the Argentine hake fishery. A general picture of the spatial and temporal distribution of ling as reflected by the commercial fleet operations was also obtained. Tipo: Journal Contribution Palavras-chave: Catch/effort; Fishing effort; Variance analysis; Fishing power; Mathematical models; Fishing power; Fishing effort; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_29792; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_24199. Ano: 2001 URL: http://hdl.handle.net/1834/1868 Un modelo estocástico de pesquerías OceanDocs Gregorio, C.G.; D'Attellis, C.E.. Based on the Schaefer production model, an stochastic model is described, that is a model in which noises perturbing biomass and measurements are considered, serving to describe random variations in mortality and recruitment as well as some inaccuracies in measurements taken. The model is discrete, linear and adaptable, and the parameters biomass and noises intensities are restimated with each new measurement obtained. The problem of regulation is solved, on the basis of the model described, through fishing effort that should be applied to keep biomasss close to equilibrium. Computer effected simulations are presented. Tipo: Journal Contribution Palavras-chave: Mathematical models; Fishery sciences; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_24199. Ano: 1979 URL: http://hdl.handle.net/1834/2056 Modelado numérico del ecosistema de los golfos norpatagónicos OceanDocs Tonini, M.H.. This dissertation analyses the oceanic circulation of the Norpatagonian Gulfs, a region of the Argentinean Sea that has long been recognized for the high productivity and biodiversity of the ecosystem. The study aims towards a systematic exploration of the physical processes that control the circulation using a high resolution three dimensional numerical model. To facilitate the dynamical understanding of the results our experimental strategy was to start with a constant density (barotropic) model forced by tides and winds, and to progress to a more complex case including density stratification generated by surface fluxes of heat and humidity. The main result that stems from the numerical experiments is that tidal forcing significantly contributes to the... Tipo: Theses and Dissertations Palavras-chave: Water masses; Oceanography; Currents (water); Fronts; Ocean circulation; Mathematical models; Tides; Winds; Physical oceanography; Tides; Winds; Physical oceanography; Oceanography; Mathematical models. Ano: 2010 URL: http://hdl.handle.net/1834/3877 Estudio numérico de circulación océanica sobre la plataforma continental argentina OceanDocs Sitz, L.E.. This dissertation analyses the barotropic and baroclinic response of the Argentinean Continental Shelf to different forcing using a three-dimensional numerical ocean model. The study aims towards a systematical exploration of the physical processes that control the circulation. To facilitate the dynamical understanding of the results our experimental strategy was to start with a three dimensional barotropic model (constant density) that examines the influence of winds and tides, and to progress to a more complex case including density stratification (baroclinic model). It was found that the average annual circulation, forced only by the wind, shows a strong contrast between the northern and southern region of the study area. A detailed analysis... Tipo: Theses and Dissertations Palavras-chave: Numerical analysis; Water masses; Mathematical models; Physical oceanography; Current data; Tides; Winds; Ocean circulation; Physical oceanography; Tides; Winds; Mathematical models. Ano: 2009 URL: http://hdl.handle.net/1834/3878 Influencia de las interacciones con el factor Año en los índices anuales de abundancia obtenidos por modelos lineales generales utilizando datos de Captura por Unidad de Esfuerzo OceanDocs Hernandez, D.R.; Perrotta, R.G.. The problem in the definition of a relative annual abundance index using a General Linear Model is posed. The possible factors generating changes in the catch per unit effort (CPUE) are discussed and the parameterization of the model is analyzed, in particular the Sigma-restrictive parameterization. This report considers the problem caused by the presence of interactions of first order that include the factor Year in the model. It has been mathematically demonstrated that in the presence of these interactions, the index series is not proportional to the abundance annual mean of the resource. An approach of practical order to evaluate the possible effect of the interactions that include the factor Year in the index is considered using the percentage of... Tipo: Journal Contribution Palavras-chave: Stock assessment; Catch/effort; Mathematical models; Abundance; Fishing vessels; Stock assessment; Mathematical models; Fishing vessels; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24199; Http://aims.fao.org/aos/agrovoc/c_2954. Ano: 2006 URL: http://hdl.handle.net/1834/2511 Informe de la investigación de campo de los efectos del tsunami de Japón marzo 2011, en las Islas Galápagos OceanDocs Rentería, W.; Lynett, P.; Weiss, R.; De La Torre, G.. Este informe contiene los resultados de dos campañas científicas realizadas para determinar los efectos físicos del impacto del tsunami de Honshu, japón, sobre las Islas Galápagos. Esta investigación de campo se llevó a cabo en dos etapas, la primera del 7 al 10 de abril y la segunda del 3 al 15 de mayo del 2011, y consistió en el reconocimiento y toma de datos en los puntos más afectados, que fueron determinados de acuerdo al modelamiento numérico, realizado para este efecto. Tipo: Journal Contribution Palavras-chave: Tsunamis; Mathematical models; Fields; Surveys; Water levels; Data collections. Ano: 2012 URL: http://hdl.handle.net/1834/4719 Estimación de índices de abundancia de pescadilla de red (Cynoscion guatucupa) a partir de datos de campañas de investigación empleando modelos lineales generales OceanDocs Ruarte, C.O; Rico, M.R.. Stripped weakfish is one of the ensemble of species known as “variado costero” most frequently landed. Considering that fact, determination of abundance indices is particularly relevant to apply assessment models and make recommendations to allow for a proper fishery management. The aim of this study was to obtain those indices of the species derived from research cruises carried out in the Argentine-Uruguayan Common Fishing Zone AUCFZ area (34°S-39°S) in the 1993-2006 period. In order to improve the traditional estimate accuracy modeling was used. To formulate the general linear models year, stratum, length, bottom salinity, depth factors and population data such as mean size and juveniles percentage were used. The percentages of variance explained in the... Tipo: Journal Contribution Palavras-chave: Abundance; Mathematical models; Stock assessment; Coastal fisheries; Cynoscion guatucupa; Marine environment. Ano: 2014 URL: http://hdl.handle.net/1834/5821 Estratificación y estimación de los rendimientos de la flota de buques procesadores congeladores arrastreros. OceanDocs Bertolotti, M.I.; Hernandez, D.R.; Pagani, A.N.; Castañeda, M.F.. In order to better understand the behaviour of the trawler processing freezer fleet in the Argentine Sea, an analysis of yields and structural characteristics for the 1989-98 period was carried out. The relationship between structural variables and yield expressed in kilos per day was explained with a simplified asymptotic model. The fleet was divided into four homogeneous strata. Common hake is the target of stratum I and stratum II which are deeply affected by overfishing of the species. As of 1993, in stratum III, common hake was replaced by other pelagic and demersal species, mainly hoki. In fleet stratum IV southern blue whiting and hoki were caught. Catches of the latter increased during the last three years. Tipo: Book Section Palavras-chave: Trawlers; Factory ships; Yield; Mathematical models; Fish catch statistics; Trawlers; Factory ships; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_7880; Http://aims.fao.org/aos/agrovoc/c_10732; Http://aims.fao.org/aos/agrovoc/c_24199. Ano: 2001 URL: http://hdl.handle.net/1834/2584 Estratificación y análisis de la eficacia y la eficiencia de la flota costera de pequeña escala perteneciente a la Sociedad de Patrones Pescadores del puerto de Mar del Plata. OceanDocs Errazti, E.; Hernandez, D.R.; Bertolotti, M.I.; Buono, J.J.. This chapter includes an economic analysis of the small scale fleet of the Mar del Plata harbour, Buenos Aires Province, Argentina. The original study was carried out at the request of the Skippers Fisheries Society to find out the relative efficacy and efficiency of homogeneous groups of associated vessels. Based on the information available, to tune the observed data, assess the relative efficacy and estimate the relative economic efficiency of the fleet, an ad hoc model was designed. Length, gross registered tonnage, engine power and number of crew members were considered and analyzed as structural variables for 1995, 1996 and 1997. No changes in variables for the period were observed so, the efficacy and efficiency analysis was carried out for the year... Tipo: Book Section Palavras-chave: Fishing vessels; Fishery economics; Coastal fisheries; Yield; Mathematical models; Fishing vessels; Coastal fisheries; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_24199. Ano: 2001 URL: http://hdl.handle.net/1834/2585 Registros recuperados: 122 Primeira ... 1 2 3 4 5 6 7 ... Última

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