2. Articole

Permanent URI for this collectionhttps://msuir.usm.md/handle/123456789/13439

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Author: search.filters.author.Bejan, Iurie

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    INVESTIGAȚII RECENTE PRIVIND STAREA RADIAȚIEI DE FOND ÎN ECOSISTEMUL URBAN BĂLȚI, REPUBLICA MOLDOVA
    (CEP USM, 2024) Stegărescu, Vasile; Ţugulea, Andrian; Bulimaga, Constantin; Bejan, Iurie
    This material reflects the study of the external gamma radiological fund level and the content of natural and man-made radionuclides in the soils of the Balti urban ecosystem in the Republic of Moldova. Radiometric and radiospectrometric research revealed values of the level of the external gamma dose rate as well as the content of anthropogenic and natural radionuclides (137Cs, 226Ra, 232Th, 40K) that do not exceed the provisions of the national norms (NFRP-2000). There is still a need to continuously monitor the level of the external gamma radiological background and the content of radionuclides of different origins in the soil and spontaneous flora, resulting from global deposits from nuclear tests and accidents, including from the Chernobyl NPP.
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    ASPECTE GENERALE ALE REGIMULUI HIDROLOGIC ALE APELOR DE SUPRAFAȚĂ ÎN PARCUL NAȚIONAL ORHEI
    (CEP USM, 2024) Angheluța, Viorica; Bejan, Iurie; Bunduc, Tatiana; Jechiu, Iradion; Boaghe, Dionisie
    This study is oriented towards the analysis, evaluation and appreciation of the hydrological regime of the surface waters in the Orhei national Park. The hydrographic network of Orhei national Park is well developed, comprising 124 rivers and streams with a total length of 257.5 km. The two main hydrographic basins include the Moța, right tributary of the Răut and Teleșeuca, left tributary of the Ichel river, along with the upper and middle course of the Vatici river, right tributary of the Răut. Most of the rivers in the area have lengths between 1 and 10 km and only 6 have lengths greater than 10 km. The assessment of water resources is based on the data from the Jeloboc hydrological station, in operation since 1958, part of the monitoring network of the state Hydrometeorological service. The average annual flow of the Răut River in this sector is 10.44 m3/s in the period 1958-2010, with a slight decrease in the flow. There are 26 water reservoirs in the Orhei national Park, most of which are small, man-made ponds, built for various purposes, such as river flow regulation, flood protection, fsh farming and others.