Research Article
Evaluation of the Risk Associated with Drinkable Water Sources Through Analysis of Gross Alpha and Beta Radioactivity Levels in Chosen Locations, Mubi – North
Ahmadu Ibrahim*
Issue:
Volume 12, Issue 1, February 2024
Pages:
1-8
Received:
29 February 2024
Accepted:
13 March 2024
Published:
2 April 2024
Abstract: Ionizing radiation refers to a form of radiation with sufficient energy to dislodge tightly bound electrons from atoms, resulting in the formation of ions. It encompasses alpha particles, beta particles, and gamma rays. Exposure to ionizing radiation, especially through ingestion, can have detrimental effects on living organisms, including humans. The primary goal of this research is to measure and analyze the levels of alpha and beta radiation in water samples, using the obtained results to evaluate radiation concentrations. Water samples were collected from five different locations within Mubi-North Metropolis and analyzed using a desktop Alpha/Beta counting machine or detector (MPC 2000B-DP). The analysis results present the alpha and beta radiation activities in each sample location. For example, alpha activities ranged from 0.009844 Bq/L to 0.1821 Bq/L, and beta activities ranged from 0.04922 Bq/L to 10.21 Bq/L across different locations. Sample D recorded the highest alpha effective equivalent dose of 0.037mSv/y, while the lowest dose of 0.002mSv/y was recorded from sample D. Sample C had the highest beta effective equivalent dose of 5.143mSv/y, and the lowest dose of 0.329mSv/y was recorded from sample E. Sample C also recorded the highest total effective dose of 516mSv/y, while the lowest dose of 0.34mSv/y was from sample E. Only sample D exceeded the recommended screening level of 0.1mSv/y for Alpha, and only sample E recorded the lowest effective dose of 0.329mSv/y below the screening limit of 1.0mSv/y, indicating potential cancer risk for all samples except sample E. In summary, the study concludes that alpha activities in all collected samples are below the recommended screening levels for drinking water radioactivity set by organizations such as EPA, WHO, and GEG-FAO. However, beta activities in the samples, except for the one from Federal Polytechnic Reservoir, surpass the recommended screening levels, suggesting a potential health risk for individuals consuming water from those sources. Overall, the research provides valuable insights into alpha and beta radiation levels in water samples from various locations in Mubi-North Metropolis, highlighting the safety of alpha levels but indicating potential hazards in beta radiation levels.
Abstract: Ionizing radiation refers to a form of radiation with sufficient energy to dislodge tightly bound electrons from atoms, resulting in the formation of ions. It encompasses alpha particles, beta particles, and gamma rays. Exposure to ionizing radiation, especially through ingestion, can have detrimental effects on living organisms, including humans. ...
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Research Article
Design of High Gain Single Stage Telescopic Cmos Operational Amplifier
Issue:
Volume 12, Issue 1, February 2024
Pages:
9-21
Received:
26 March 2024
Accepted:
24 April 2024
Published:
17 May 2024
DOI:
10.11648/j.ajpa.20241201.12
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Abstract: A need for high gain operational amplifiers (op-amps) exists for certain applications. This requires research in the area of its gain without affecting other parameters drastically. In this paper, high gain single stage Telescopic CMOS operational amplifier has been designed and verified, using PSPICE simulation software. The designed circuit operates at ±5V power supply in the 1µm CMOS technology. The simulation results show that the proposed single stage Telescopic CMOS op-amp has an open loop gain of 77.777dB, unity gain frequency of 7.3054MHz, ICMR of -0.248V to 4.4120V and output voltage swing of 7688.8 times to that of input. A 2pF load capacitor is applied in performing a stable phase margin of 80.669°. As result shows that the designed circuit has high gain, which is used for various applications where very large gain is required to amplify weak signals, such as heart beat in medical instrumentations. The total power consumed by the device is 0.589mW. This shows that the power consumed by the device is too small. Therefore, this device can operate for longer duration of time. The smaller the power dissipation the better the device is. Low power operation is a very important quality factor for batteries that should supply the system for hours or days to power more and more electronic systems.
Abstract: A need for high gain operational amplifiers (op-amps) exists for certain applications. This requires research in the area of its gain without affecting other parameters drastically. In this paper, high gain single stage Telescopic CMOS operational amplifier has been designed and verified, using PSPICE simulation software. The designed circuit opera...
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