Research Article
Calculations of Resonances Energies of the Ne Atom, Ne-like Na+, Mg2+, and Ne+ Ions, Framework of the Modified Atomic Orbital Theory
Issue:
Volume 10, Issue 1, March 2025
Pages:
1-14
Received:
14 August 2024
Accepted:
22 January 2025
Published:
11 February 2025
Abstract: In the literature, there are several theoretical and experimental methods for calculating the resonance energies and natural widths of atomic systems. For the 1s22s2p6np ¹P1 series of Ne, Na+, Mg2+, and the 1s2s22p5np ¹P1 series of Ne+, various methods have been employed. In this present work, resonance energies resonance energies and width of the 1s22s2p6 np 1P1 series of the Ne, Na+, Mg2+, and 1s2s22p5 np 1P1 of Ne+ ions are calculated. The energies are calculated in the framework of the Modified Atomic Orbital Theory (MAOT). The results obtained compared very well with theoretical and experimental literature values. The possibility to use the MOAT formalism report rapidly with an excellent accuracy the position of the resonances as well as their width within simple analytical formulae is demonstrated. It is demonstrated that the MOAT-method can be used to assist fruitfully experiments for identifying narrow resonance energies. Thus, our results can be used as reference data for the interpretation of atomic spectra for the diagnosis of astrophysical and laboratory plasma. Through this method new values of these energies are reported going up to n=40. These excellent agreements between theory and experiments indicate that the MAOT formalism can be used to report accurate high-lying excited Rydberg series of atomic species for the diagnostic and the modeling of astrophysical or laboratory plasmas.
Abstract: In the literature, there are several theoretical and experimental methods for calculating the resonance energies and natural widths of atomic systems. For the 1s22s2p6np ¹P1 series of Ne, Na+, Mg2+, and the 1s2s22p5np ¹P1 series of Ne+, various methods have been employed. In this present work, resonance energies resonance energies and width of the ...
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Methodology Article
Assessment of Water Contamination by Heavy Metals and Radionuclides Near Industrial, Automobile, and Residential Areas in Gboko, Nigeria
Agaku Raymond Msughter*,
Bem Timothy Terngu,
Shiada Msugh Stephen,
Nyijime Simon Ayila,
Ternenge Ngukuran Patricia
Issue:
Volume 10, Issue 1, March 2025
Pages:
15-24
Received:
11 July 2025
Accepted:
28 July 2025
Published:
21 August 2025
Abstract: Water contamination by heavy metals and radionuclides poses a major environmental and public health concern due to their toxicity, persistence, and bioaccumulation potential. This study aimed to assess the contamination levels of water sources near industrial, automobile, and residential areas in Gboko, Nigeria. Specifically, the concentrations of heavy metals such as lead (Pb), cadmium (Cd), chromium (Cr), iron (Fe), and zinc (Zn), as well as naturally occurring radionuclides including 226Ra, 232Th, and 40K, were analysed in borehole, well, and stream water samples. Results showed that residential areas generally had metal concentrations below WHO permissible limits, while automotive and industrial areas recorded higher levels, especially for Pb, Cd, Cr, and Fe. Lead levels in industrial streams reached 0.04 mg/L, exceeding WHO standards, with potential long-term health risks such as neurological damage and kidney dysfunction. Radionuclide activity was highest at the industrial sites, with Total Annual Effective Dose (TAED) values ranging from 0.00146 to 0.00221 mSv/year, which, although within WHO safety limits, approached the Excess Lifetime Cancer Risk (ELCR) thresholds. The elevated contamination levels in industrial and automotive areas were attributed to emissions from vehicular activities, industrial discharges, and surface runoff carrying pollutants into water bodies. Overall, while zinc concentrations remained within safe limits across all sites, the presence of other heavy metals and increasing radionuclide activities in industrial areas indicate a growing pollution burden. The study concludes that periodic monitoring and implementation of pollution control measures are essential to mitigate the potential health hazards associated with contaminated water sources in Gboko, thereby ensuring the safety of residents who rely on these water supplies for domestic and drinking purposes.
Abstract: Water contamination by heavy metals and radionuclides poses a major environmental and public health concern due to their toxicity, persistence, and bioaccumulation potential. This study aimed to assess the contamination levels of water sources near industrial, automobile, and residential areas in Gboko, Nigeria. Specifically, the concentrations of ...
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,
Jean Kouhissoré Badiane
