The experimental results obtained in this paper was made by investigation of water samples collected from different zones of Ialomita River to characterize the quality indices of water. Salinity, electrical conductivity and other physicochemical indicators of samples (pH, turbidity) were investigated in the order to establish the real pollution degree of Ialomita River. The heavy metals concentrations containing Pb, Cd, Zn, Ni, Cr, Mn, and Fe were determined by Flame Atomic Absorption Spectrometry (FAAS). The obtained data confirmed that heavy metals are coming from various pollutant sources and the main anthropogenic sources were industrial waters and municipal wastewaters pathogenic which include organisms, plant nutrients, synthetic organic chemicals, inorganic chemicals, microplastics, sediments, oil etc.
In this paper, an impact study of the consequences of uranium mining on the Caraş Valley was carried out and includes the radioactive effects of uranium mining activity, as well as the monitoring, remediation and post-closure program of environmental factors. The experimental part highlights the influence of the exploitation of uranium deposits on the soil and vegetation. By bringing uranium ore to the surface, in the areas where it is handled or transported, an influence on the environment is highlighted by increasing the content of natural uranium and decay products from its family in environmental factors. Soil and vegetation are directly contaminated by the storage of sterile ore, poor ore, ore storage or radioactive waste; either indirectly by contaminating the air or water causing soil and vegetation pollution. [1]
Depending on the Si content, the magnetic and the electrical properties of steels for electrotechnical purpose are produced with oriented grains or contrarily with non-oriented grains. Usually, the Si content of such steels varies between 0.8 - 4.8%. Generally, steels with less than 3% Si are used for small and medium power electric machines, while steels with higher Si content, i.e. above 3%, are used for high power electric machines and electric transformers. Si in steel increases the strength and decreases the magnetic losses guaranteeing the development of large grains, which improves the magnetic properties of the laminated sheets. For the processing of the sheets, the magnetic core of the electric machine has to be considered in addition to the magnetic properties of the material and the energy losses, the evolution of the material’s microstructure in the cutting area, which may possibly need reconditioning operations. The aim of this study is oriented to the morphological, mechanical electrical and magnetic characterization of Si steel with non-oriented grains in order to be further employed as transformer cores.
Two lavender oils, having the same genetic material, were extracted in identical conditions (water steaming from Lavandula angustifolia flos). Differences consisted in the age of the culture and in the region of cultivation. The lavender oils were assayed for their composition using GC-MS and HPTLC [1]. GC-MS analysis was performed on a TRACE TR- 5MS capillary column, 5% phenyl polysilphenylene-siloxane, within the range 30–650 m/z. Identification was based on the mass spectrums from NIST library collection. HPTLC analysis was performed on silicagel, using ethyl acetate: anhydrous acetic acid: formic acid: water (72:7:7:14) as a mobile phase, and a migration distance of 8 cm.
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