Faculty of Sciencehttps://hdl.handle.net/20.500.12504/22024-03-29T12:41:51Z2024-03-29T12:41:51ZAssessing the radiological hazards due to radionuclides in sediments and tailings around Kilembe copper mines, Western UgandaEvarist, Turyahabwa R. S.Farooq, KyeyuneEric, MucunguziAkisophel, KisoloManny, Mathuthuhttps://hdl.handle.net/20.500.12504/16372024-03-23T00:20:51Z2024-03-19T00:00:00ZAssessing the radiological hazards due to radionuclides in sediments and tailings around Kilembe copper mines, Western Uganda
Evarist, Turyahabwa R. S.; Farooq, Kyeyune; Eric, Mucunguzi; Akisophel, Kisolo; Manny, Mathuthu
Copper mining in Kilembe Valley, Western Uganda, between 1956 and 1982 resulted in multiple tailing sites, raising concerns about potential increases in the natural background radiation. In this study, the radioactivity concentrations of 226Ra, 232Th, and 40K in 31 sediments and tailing samples from the Kilembe copper mines area were determined using HPGe-based gamma spectrometry. The mean activity concentrations of 226Ra, 232Th, and 40K in sediment samples were 38.6 ± 8.9, 37.4 ± 7.8, and 708.0 ± 147.3 Bq kg−1, respectively. While in tailing samples, the mean values were 171.3 ± 31.7, 34.8 ± 14.9, and 792.4 ± 208.2 Bq kg−1, respectively. These values exceeded global averages of 35, 30, and 400 Bq kg−1 for 226Ra, 232Th, and 40K, respectively. To assess the radiological hazards due to radionuclides in sediments and tailings, several parameters such as the radium equivalent activity (Raeq), external hazard index (Hex), internal hazard index (Hin), gamma representative index (Iγ), absorbed dose rate (D), total annual effective dose (Etot), and total excess lifetime cancer risk (ELCRtot) were determined. In sediments, most of these hazard parameters were above the world’s average values, except Raeq, Iγ, Hex, and Hin. While in tailings, all the hazard parameters surpassed the global average values except Raeq and Hex. Pearson correlation coefficient and hierarchical cluster analysis showed that 226Ra was the main contributor to the assessed radiological hazards. The study suggests potential radiological risks linked to natural radioactivity from sediments and mine tailings, especially when used as building materials.
2024-03-19T00:00:00ZPrevalence and management of common soccer injuries during university games in UgandaOlive, TusiimeEunice, KateshumbwaFredrick, Ssempalahttps://hdl.handle.net/20.500.12504/16172024-02-22T00:12:10Z2020-06-01T00:00:00ZPrevalence and management of common soccer injuries during university games in Uganda
Olive, Tusiime; Eunice, Kateshumbwa; Fredrick, Ssempala
The study sought to establish the common soccer injuries, their causes and
management among Busitema University athletes. The study used a cross-
sectional survey design involving quantitative and qualitative approaches on
a sample of 76 respondents, obtained by simple random and purposive
sampling techniques. Data was collected by use of self-administered
questionnaires, an observational tool and interview guide. Quantitative data
analysis involved generation of descriptive statistics; frequencies,
percentages and means. Qualitative data was analysed using content
analysis. The study established that the common injuries were ligament
sprain or strains (56.6%) and re-injuries (55.1%). Dry and hard grounds,
joint instability, bad playing field conditions, inadequate treatment/
rehabilitation from previous injury, exercise overload/ over training, poor
skill execution, poor training techniques and player neglect caused the
injuries. Sports injuries were majorly managed through taking rest and use
of pain killers. It was recommended that quality playing fields and
equipment, providing players with adequate attention and advocating for
full implementation of fair play rules should be fostered to abate sports
injuries.
2020-06-01T00:00:00ZEpidemiology and causes of common soccer injuries during university games in UgandaOlive, TusiimeEunice, KateshumbwaMilton, Chebethttps://hdl.handle.net/20.500.12504/16162024-02-22T00:09:36Z2022-07-01T00:00:00ZEpidemiology and causes of common soccer injuries during university games in Uganda
Olive, Tusiime; Eunice, Kateshumbwa; Milton, Chebet
The study sought to establish the common soccer injuries, their causes and management
among Busitema University athletes. The study used a cross-sectional survey design
involving quantitative and qualitative approaches on a sample of 76 respondents, obtained
by simple random and purposive sampling techniques. Data was collected by use of self-
administered questionnaires, an observational tool and interview guide. Quantitative data
analysis involved generation of descriptive statistics; frequencies, percentages and means.
Qualitative data was analysed using content analysis. The study established that the common
injuries were ligament sprain or strains (56.6%) and re-injuries (55.1%). Dry and hard
grounds, joint instability, bad playing field conditions, inadequate treatment/ rehabilitation
from previous injury, exercise overload/ over training, poor skill execution, poor training
techniques and player neglect caused the injuries. It was recommended that quality playing
fields and equipment, providing players with adequate attention and advocating for full
implementation of fair play rules should be fostered to abate sports injuries.
2022-07-01T00:00:00ZCompetitive and noncompetitive batch sorption studies of aqueous cd(ii) and pb (ii) uptake onto coffea canephora husks, cyperus papyrus stems, and musa spp. peelsG. K., BakyayitaA. C., NorrströmR. N., Kulabakohttps://hdl.handle.net/20.500.12504/16022024-02-10T00:16:38Z2015-09-01T00:00:00ZCompetitive and noncompetitive batch sorption studies of aqueous cd(ii) and pb (ii) uptake onto coffea canephora husks, cyperus papyrus stems, and musa spp. peels
G. K., Bakyayita; A. C., Norrström; R. N., Kulabako
Coffea canephora, Cyperus papyrus, and Musa spp. were studied for competitive and noncompetitive removal of aqueous Cd2+ and Pb2+. The optimal conditions were pH 4.5 and agitation time 3.0 hours. Biomass constituent ions showed no interference effects whereas cation exchange capacity values corresponded to the sorption efficiencies. XRD spectroscopy revealed surface oxygen and nitrogen groups that provide binding sites for metal ions. The maximum sorption efficiency ranges for metal ions in noncompetitive media were 95.2–98.7% for C. canephora, 42.0–91.3% for C. papyrus, and 79.9–92.2% for Musa spp. and in competitive sorption 90.8–98.0% for C. canephora, 19.5–90.4% for C. papyrus, and 56.4–89.3% for Musa spp. The Pb2+ ions uptake was superior to that of Cd2+ ions in competitive and noncompetitive media. In competitive sorption synergistic effects were higher for Cd2+ than Pb2+ ions.
The pseudo-second-order kinetic model fitted experimental data with 0.917 ≤ 𝑅2 ≥ 1.000 for Pb2+ ions and 0.711 ≤ 𝑅2 ≥ 0.999 for
Cd2+ ions. The Langmuir model fitted noncompetitive sorption data with 0.769 ≤ 𝑅2 ≥ 0.999; moreover the Freundlich model fitted
competitive sorption data with 0.867 ≤ 𝑅2 ≥ 0.989. Noncompetitive sorption was monolayer chemisorption whereas competitive
sorption exhibited heterogeneous sorption mechanisms.
2015-09-01T00:00:00Z