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Oct 10, 2026Open Access
Introduction: Pyeloureteral junction syndrome is the most common of the congenital obstructive uropathies. Her annual impact is evaluated at 5 for 100,000 in the general population in Senegal. Its frequency ranged from 1 to 10 across 5000 births. Dynamic renal scintigraphy (DRS) with hyperdiuresis testing has two aims: to define the impact of urinary tract obstruction on renal function and to assess the severity of the obstruction and the flow of the urine. Our objective was to evaluate t...
Aug 27, 2026Open Access
Radon is a naturally occurring radioactive gas produced by uranium decay in soil and rocks, and the dominant source of natural ionizing radiation exposure. Prolonged indoor inhalation of its alpha-emitting progeny is the second leading cause of lung cancer after tobacco smoking. This study provides the assessment of indoor radon concentrations in 25 dwellings across five villages in a mountainous region in northern Pakistan. These villages (Kamra, Thoon, Paija, Bhattian, and Chaffar) are in Kotl...
Apr 03, 2026Open Access
The activity concentrations of 238U, 232Th and 40K in sediments from the Kamukuywa River in Bungoma County were determined using a NaI(Tl) detector at South Eastern University Kenya, Physics Department in order to obtain the radium equivalent, absorbed dose rate, annual effective dose rate, hazard indices, radioelement concentrations (RC) and radiogenic heat production (RHP). The average activity concentrations for 238U, 232Th and 40...
Jan 17, 2024Open Access
We used the MATLAB Program to calculate the mass stopping power and range of alpha particles in biological human body tissues (such as water and the eye lens tissues) at energies between 0.2 and 200 MeV. The Bethe Block formula was used to calculate the mass stopping power, and the simple integration (continuous slowing down approximation) method was used to calculate the alpha particle ranges. Empirical formulae were developed to determine mass-stopping power and ranges of water and eye lens ti...
Nov 15, 2023Open Access
In order to facilitate the calibration and scale of pyroelectric detectors for environmental dose monitoring, a new simple standard irradiation device was designed. Through Monte Carlo software, the uniformity of radiation field, absorbed dose of pyroelectric detector and scattering contribution rate of this device are simulated. The simulation results show that the new simple standard irradiator satisfies the national standards and can fulfill the calibration and scaling requirements of pyroele...
Oct 25, 2023Open Access
With the increasing applications of radioactivity measurements in the nuclear industry, this paper focuses on the rapid identification, ease of operation, and low power consumption of portable nuclear isotope identifiers. Leveraging the excellent performance, ease of software portability, and open-source nature of embedded Linux systems, this research addresses key aspects such as spectrum data filtering, peak finding, false peak detection, and multi-isotope recognition. This system ensures port...
May 25, 2023Open Access
A Yukawa-type potential was used to predict B for the current nuclides using a set of 23 nuclides as the source of the experimental values. The deviation between measurement and prediction was remarkably reduced by a special search on the average distance between nucleons. The best results were obtained for a 2-exponential model. The predictions of B inside and outside the range of A and Z used to do the fitting were carried out by fitting the obtained values of the average distance between nucl...
Feb 24, 2023Open Access
This article discusses the implications of the Ukrainian military conflict on the safety and security of Zaporizhzhia Nuclear Power Plant (ZNPP). We have used some simplified models to calculate the boiling and boiling-off times of water in the spent fuel pools to estimate the impacts of complete shutdown of cooling systems and the probability of dangerous accidents in storage facilities. Our data confirm that this probability is not negligible, so, this factor of risk should be taken into consi...
Nov 09, 2022Open Access
The vehicle-mounted gamma patrol spectrometer system is a set of system equipment that places a gamma-ray spectrometer on a vehicle-mounted mobile platform to detect the energy and intensity of gamma rays in the target area, and identify the type and content of radionuclides. The vehicle-mounted gamma patrol spectrometer system is a fast and high-sensitivity measurement method for detecting environmental radioactivity. It is usually used in the field of environmental radiation monitoring and und...
Oct 13, 2022Open Access
As more and more people are aware of the harm of radon, the demand for radon measuring instruments will increase, and radon measuring instruments have a broad potential market. According to the theory that the α-ray from the decay of radon and its daughters can ionize air molecules, a pulse ionization chamber radon measuring instrument is designed, which has the characteristics of high measurement sensitivity, good measurement accuracy and stability. The system hardware consists of detection par...
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