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Luminita D.-B.,Al. I. Cuza University | Borsos Z.,University of Bucharest | Matasaru D.,Technical University Gheorghe Asachi | Casian-Botez I.,National Institute for Marine Research and Development | And 2 more authors.
UPB Scientific Bulletin, Series A: Applied Mathematics and Physics | Year: 2011

In the fractal approximation of motion, by means of numerical simulation, the interaction charged particle-generalized electromagnetic waves (gravitational and electromagnetic waves)-generalized constant magnetic field is studied. Some distinct sequences of the movement are emphasized: regular motion, motion fractalization, gun-type effect, chaotic gun-type effect and multi-gun-type effect. Several considerations of these movement sequences are analyzed. Source


Caraivan G.,Romanian National Institute of Marine Geology and Geoecology GeoEcoMar | Fulga C.,Romanian National Institute of Marine Geology and Geoecology GeoEcoMar | Golumbeanu M.,National Institute for Marine Research and Development
Journal of Environmental Protection and Ecology | Year: 2011

An 18 m depth bore hole was drilled in the northern part of the Agigea barrier beach. On the basis of complex textural, mineralogical, and faunistic (moluska fauna) analyses performed on samples collected from this drilling, a stratigraphic evolution model during the Holocene time was performed. Briefly, in the Agigea barrier beach area, the marine sedimentation began with the Upper Kalamitian beds. In those times, the Agigea river valley was much more extended seaward, so that the access to the coastal marine sediments was actually reduced. According as the sea level rose, the Agigea river valley was flooded by the sea, in the shape of a marine bay then it was closed by a barrier beach. It is very important to know the trend of palaeoenvironmental evolution of the Agigea lake area in designing the medium and long-term management. Source


Radu G.,National Institute for Marine Research and Development | Anton E.,National Institute for Marine Research and Development | Golumbeanu M.,National Institute for Marine Research and Development | Raykov V.,Institute of Fishing Resources | And 4 more authors.
Journal of Environmental Protection and Ecology | Year: 2011

The paper presents the evolution of the Black Sea ecosystem as a characteristic inland sea, subject to land-based pollutions and other human influences. Under these circumstances, the fishery was the sector most affected by the important changes of the Black Sea ecosystem. The main causes responsible for decline of marine living resources were generated by: eutrophication (sources from agriculture, municipal waste, industry, etc.); harmful substances (sources from agriculture, industry, municipal waste, etc.); hydraulic works; commercial fisheries; alien species; climatic changes. On the other hand, fishing activities contribute themselves to the worsening of the ecological situation and for the depletion of the fish stocks through: open access to resources management regime applied individually by each coastal country; overfishing and illegal fishing and the use of destructive harvest techniques. Presently, in the Black Sea area there is not a regional fishery management organisation. The fisheries regulatory framework is promoted by each coastal country, not being harmonised at a regional level, even in the case of shared or migratory species. Under these circumstances, each country has carried out its own researches related to the state of the fish resources. The evolution and state of 5 main Black Sea commercial fish species: sprat - Sprattus sprattus; anchovy - Engraulis encrasicolus; horse mackerel - Trachurus mediterraneus ponticus; turbot - Psetta maxima maeotica and whiting - Merlangius merlangus euxinus are also presented. Source


Nita V.,National Institute for Marine Research and Development | Zaharia T.,National Institute for Marine Research and Development | Nenciu M.,National Institute for Marine Research and Development | Cristea M.,National Institute for Marine Research and Development | Tiganov G.,National Institute for Marine Research and Development
AACL Bioflux | Year: 2012

The Vama Veche - 2 Mai marine area is an almost unique combination at the Romanian coast, covering a wide variety of elementary habitats, the area being considered a true mosaic. The extremely rich benthic and pelagic life, expressed by the high biodiversity in the area, is a real milestone for the Romanian coast, being at the same time shelter and breeding area for many nektonic marine organisms. The National Institute for Marine Research and Development "Grigore Antipa" Constanta was custodian of the reserve in the period 2004 - 2009, during which an intense research activity was developed in the area, evidenced by the numerous scientific papers published, as well as the Management Plan and Regulation of the Reserve, completed and submitted for approval to the Ministry of Environment. Since December 2011, the Institute has again taken into custody the Vama Veche Reserve, for a period of five years. The paper herein is a brief scan of the current state of the protected area, based mainly on the research conducted there by the Institute, within many projects focusing on the quality of the Romanian marine environment. Source

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