Jahfer Majeed

Jahfer Majeed
Koya University · Department of Physics

Master of Science

About

7
Publications
707
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
4
Citations
Citations since 2017
2 Research Items
4 Citations
20172018201920202021202220230.00.51.01.52.0
20172018201920202021202220230.00.51.01.52.0
20172018201920202021202220230.00.51.01.52.0
20172018201920202021202220230.00.51.01.52.0
Introduction
Skills and Expertise

Publications

Publications (7)
Preprint
Full-text available
In this study, the activity concentrations of natural and artificial radionuclides in 18 sediment samples were investigated from Iraq's Upper and Lower Dukan dam using he high-purity germanium (HPGe) detector as a gamma-ray spectrometry technique. The results revealed that the values of the activity concentration of ²²⁶ Ra, ²³² Th, ⁴⁰ K, and ¹³⁷ Cs...
Article
Gamma-ray spectrometry with high-purity germanium (HPGe) detector was used to estimate the natural radioactivity levels in the soil along the Little Zab River in the Kurdistan Region of Iraq. Results showed that the activity concentrations of 226Ra, 232Th, 40K and 137Cs were in ranges of 4.4–34.7, 1.5–13.3, 42.1–583.9 and 0.5–31.5 Bq kg−1, respecti...
Article
Full-text available
Inhalation of radon (222 Rn) and daughter products are a major source of natural radiation exposure. Measurement of indoor radon concentrations were performed in the two hundred rooms for the 25 apartments in Erbil city by using long term technique (CR-39 SSNTDs) for 90 days exposure time and short term technique (radon monitor) for 2 hours exposur...
Article
Full-text available
This paper studies a number of reasons that effect on the overall output electrical energy of a solar cell, to find the best angle at morning, noon and afternoon times in installing a solar cell system in Koya.. The study was conducted for three (3) months in Koya City-Kurdistan region of Iraq in 2014. It was found that the best Azimuth angle is be...
Research
Full-text available
In order to assess effects of long term exposure of radon gas, CR-39NTDs exposed to indoor radon during summer season in the rest halls (ground floor) of 20 selected Kindergartens of the districts of Koya, Iraqi Kurdistan. Ventilation rate affect on the results of indoor radon concentration for each kindergarten. Good ventilation got a low level of...
Article
Full-text available
In order to assess effects of long term exposure of radon gas, CR-39NTDs exposed to indoor radon during summer season in the rest halls (ground floor) of 20 selected Kindergartens of the districts of Koya, Iraqi Kurdistan. Ventilation rate affect on the results of indoor radon concentration for each kindergarten. Good ventilation got a low level of...

Network

Cited By