10 hasil untuk "Simona Elena AVRAM"
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Artikel Jurnal
DETERMINATION AND ASSESSMENTS OF PHYSICO-CHEMICAL PARAMETERS OF THE WATER FROM ANTHROPO-SALINE LAKES LOCATED IN THE PROTECTED AREA “SALINA TURDA”, ROMANIA
It was carried out the monitoring of the qualitative parameters for the Ocnei and Rotund lakes located in the protected area Salina Turda, Romania, and as well it was made a comparative analysis of the results with previous determinations. It was determined the evolution of the physico-chemical…
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Low-Cost Sensor-Based Spatial Screening of Urban Air Quality in a Medium-Sized City: A Case Study in Alba-Iulia, Romania
Urban air pollution remains a major public health concern, with road traffic representing one of the dominant sources of particulate matter and volatile organic compounds in growing cities. This study evaluates the level of chemical air pollution in Alba-Iulia municipality (Romania) through two…
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Microstructural Characterization of the Mn Lepidolite Distribution in Dark Red Clay Soils
Lepidolite is one of a small number of minerals that contains a significant amount of lithium. Some areas, like the Apuseni and Metalifer Mountains in Romania, present dark red layers intercalated with reddish-yellow clay soils with interesting aspects. X-ray diffraction (XRD) analysis coupled with…
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PHYSICOCHEMICAL INVESTIGATION OF SOME GEOTHERMAL WATERS FROM SĂLAJ COUNTY, ROMANIA
Geothermal waters solve minerals from the geological layers due to their increased temperature. These minerals affect water hardness and salinity. Therefore, thermal water samples were collected from spa pools springs in Sălaj County, Romania: Broscărie (Șimleul Silvaniei), Jibou and Boghis. The…
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Investigation of Ferrous Conglomerate Particles Found in Carwash Slurry and Their Environmental Implications
Ferrous particles are usually found in atmospheric particulate matters due to the cars chassis oxidation. These particles are able forming conglomerates with the other mineral particles. Thus, the investigated carwash slurry (CS) reveals a high mineralized composition dominated by Quartz, Calcite…
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Mineral Powder Extraction by the Natural Drying of Water from the Public Springs in Borsec
Borsec is one of the most important mineral water spa resorts in Romania and is also an important mineral water bottling facility. There are several public springs with significant mineral content. The present paper focuses on mineral powder extraction by the drying of water samples collected from…
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EVIDENCE OF ABNORMAL HIGH SILVER CONTENT IN A POLISH POLTORAK COIN ISSUED IN 1624 AS CONSEQUENCE OF ADVANCED COPPER CORROSION
Long ground resting of coins small denomination might affect their microstructure due to advanced corrosion. It is well known that cleaning of silver-copper alloy artifacts leads to a surface enrichment of the silver amount due to the partial removal of the copper grains which are more corroded. We…
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CORROSIVE EFFECT OF ROLLING FAULTS INDUCED BY MICROSTRUCTURAL SEGREGATIONS IN A SILVER COIN ISSUED BY GABRIEL BETHLEN IN 1626
Gabriel Bethlen’s monetary reform in 1625 supposed to replace bad coins with good-quality silver issues. Some of these coins exhibit small, parallel surface lines caused by rolling faults in silver plates. This study investigates a 1626 silver groat minted at Baia-Mare, displaying prominent…
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Nanostructured Silver Found in Ancient Dacian Bracelets from Cehei Hoard—Salaj, Romania
Nanomaterials are usually associated with modern technologies and advanced processing methods. Three silver Dacian bracelets within Cehei hoard (Salaj County, Romania) are tougher than they should be according to the apparently higher silver content. The microstructural investigation reveals that…
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Physicochemical Assessment of the Road Vehicle Traffic Pollution Impact on the Urban Environment
Vehicle traffic pollution requires complex physicochemical analysis besides emission level measuring. The current study is focused on two campaigns of emissions measurements held in May and September 2019 in Alba Iulia City, Romania. There was found a significant excess of PM2.5 for all measuring…