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Berechet M.D.,Romanian National Institute for Research and Development in for Textile and Leather | Calinescu I.,Polytechnic University of Bucharest | Stelescu M.D.,Romanian National Institute for Research and Development in for Textile and Leather | Manaila E.,National Institute for Laser, Plasma and Radiation Physics | And 7 more authors.
Revista de Chimie | Year: 2015

In the present study we have investigated the chemical composition of the essential oil extracted through hydrodistillation, from fresh petals of Rosa damascena Mill, reared in Romania. The results were compared with those obtained in other specialty studies in order to validate the quality of the essential oil extracted from roses reared in Romania. This volatile oil was analyzed using Gas Chromatography coupled with Mass Spectrometer (GC-MS) and Fourier Transform Infrared Spectroscopy (FTIR). Only a small number of monoterpenes and sesquiterpenes were identified and a large number of aliphatic components. In the examined essential oil, nom a total of 85.76% aliphatic components, the aliphatic hydrocarbons represents 76.59% while the oxygenated aliphatic represents only 9.17%. The representative aliphatic hydrocarbons were: heneicosane, nonadecane, tricosane, eicosane and octacosane. The representation of monoterpenes in the obtained essential oil was only of 6.54%. From this total, hydrocarbon monoterpenes accounted 4.43% while oxygenated monoterpenes accounted about 2.11%. The representative hydrocarbon monoterpenes found in the obtained essential oil were (-)-β-pinene (1.665%), cis-ocimene (1.024%), sylvestrene (0.549%) and trans-ocimene (0.423%) and the representative oxygenated monoterpenes were nerol (1.039%) and β-Citronellol (0.729%). Source


Lazar A.V.,Science Marine Research SRL | Bugheanu A.D.,University of Bucharest | Ungureanu G.V.,University of Bucharest | Ionescu A.D.,Science Marine Research SRL
Geo-Eco-Marina | Year: 2013

This paper focuses on identifying and analyzing objects and seafloor features from Mangalia Harbor (Romania). The area was surveyed using a side-scan sonar. After explaining, briefly, the methodology used in scanning and data processing, the results are discussed: a mosaic showing the seafloor of the harbor, which is the basis of further descriptions of some representative areas, and the contact analyses of the debris left from human activity. Furthermore, their position was established taking into consideration the possibility of cleaning the harbor. We concluded that the identified objects, such as wrecks, metal frames do not represent a real danger for navigation. Nevertheless, a mound of rocks situated near the main channel could cause trouble to large ships. ©1998-2010. National Research and Development Institute for Marine Geology and Geoecology. Source


Ungureanu G.-V.,Science Marine Research SRL | Ungureanu G.-V.,University of Bucharest | Lazr A.-V.,Science Marine Research SRL | Lazr R.,Science Marine Research SRL | And 4 more authors.
Italian Journal of Geosciences | Year: 2015

The paper presents the results of the first program of large scale side-scan sonar surveys for environmental purposes on the Romanian waters. The methodology used for the scanning, data processing, analyses of grab samples and the mapping of the main types of sediments for drawing of habitat extents are described. Data processing ended with the segmentation of the sea floor based mainly on backscatter data pattern from which the acoustic classification of the sea floor was derived. A total number of five sites were analyzed, covering a total area of 13635 hectares. Five main acoustic facies were identified, out of which three are present within the "Underwater Sulfurous Seeps from Mangalia" Natura 2000 site, the NATURA 2000 site used for exemplification due to the variety of sea floor types. © 2015 Società Geologica Italiana, Roma. Source

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