Spatial distribution of uranium and chemo-radiological assessment in Hamirpur district, Himachal Pradesh, India
16
Citation
51
Reference
10
Related Paper
Citation Trend
This book chapter review injury from exposure to radiation and the radiological disaster management of exposed persons. The chapter describes the disaster categories involving radioactive materials, various radiological exposure scenarios, the personnel resources involved in a radiological disaster response, the phases of a radiological disaster, and the tools required for managing radiological disasters. The chapter then discusses pre-disaster, event response, and post-disaster event considerations related to radiological disasters.
Triage
Radiological Imaging
Cite
Citations (0)
Cite
Citations (93)
Cite
Citations (1)
Uranium in nature is commonly associated with carbonaceous material. Laboratory studies were therefore conducted to determine the relative ability of various types of carbonaceous material and some other substances to remove uranium from solution. The results of these experiments indicate that the low-rank coals are more effective in extracting uranium than any of the other materials used. A chemical determination shows that nearly 100 percent of the available uranium in solution is removed by subbituminous coal. The uranium is apparently retained in the coal by an irreversible process. The notable affinity of uranium for coalified plant remains suggests that some uranium deposits may have been formed over a long period of time by the extraction of uranium from dilute ground-water solutions. A possible application of the results of this work may be the extraction of uranium by coal from natural water or from waste solutions from uranium-processing industrial plants.
Natural uranium
Depleted Uranium
Uranium ore
Cite
Citations (73)
This document devises a method of comparing radiological and non-radiological hazard control levels. Such a comparison will be useful in determining the design control features for facilities that handle radioactive mixed waste. The design control features of interest are those that assure the protection of workers and the environment from unsafe airborne levels of radiological or non-radiological hazards.
Cite
Citations (0)
The effect of sample digestion time and temperature on the determination of U(Ⅵ) and U(Ⅳ) in uranium ores and uranium-bearing rocks was carried out.And the relationship between U(Ⅵ) and total uranium in samples with both high(≥100 μg/g) and low(≤100 μg/g) contents of uranium was also discussed.The results indicate that U(Ⅵ) and U(Ⅳ) can be extracted and determined effectively under digestion temperature of 65℃ in 3 hours.The content of total uranium equals to the sum of U(Ⅵ) and U(Ⅳ) for the samples with high uranium content(≥100 μg/g).However,the content of U(Ⅵ) can be expressed as an equation of w=(A560/A584)×w(Utotal) for the samples with low uranium content(≤100 μg/g),which can be used to calculate the contents of U(Ⅵ) and U(Ⅳ) in the samples when total content of uranium is obtained by the determination at different wavelengths,which greatly simplifies the analysis procedure and improves the analysis efficiency.
Uranium ore
Cite
Citations (0)
Abstract The uranium adsorbing abilities of various biopigments were investigated. Extremely high adsorption capacities for uranium were found in melanin and bioflavonols (quercetin and morin) having chelating positions with uranium. As a step towards improving the adsorption characteristics of the bioflavonols, quercetin and morin were immobilized on both Bemberg rayon fiber and polyaminostyrene, and the basic features of uranium adsorption by the immobilized bioflavonols were studied. The bioflavonols immobilized on Bemberg rayon fiber have a highly selective capacity adsorb uranium. Uranium recovery from seawater by the immobilized bioflavonols was markedly affected by the pH value of the seawater, and the uptake at pH 8, which is the pH value of natural seawater, was difficult. However, this adsorbent can accumulate large amounts of uranium from non‐saline water. Thus it can be used to remove and recover uranium from uranium refining waste water and other waste sources.
Natural uranium
Morin
Cite
Citations (26)
Relatively unoxidized black uranium ores from sandstone deposits in the western United States show deviations in the uranium-235 to uranium-234 ratio throughout a range from 40 percent excess uranium-234 to 40 percent deficient uranium-234 with respect to a reference uranium-235 to uranium-234 ratio. The deficient uranium-234 is leached preferentially to uranium-238 and the excess uranium-234 is believed to result from deposition of uranium-234 enriched in solutions from leached deposits.
Isotopes of uranium
Uranium ore
Uranium-238
Enriched uranium
Uranium mine
Cite
Citations (141)
The escalating number of radiodiagnostic investigations has, as a consequence, an increase in medical irradiation of patients and of cost of radiological services. Radiologists in USA and UK have since early 1970 questioned the efficacy of various radiological investigations and produced substantial evidence that more rational approaches are necessary. WHO initiated, in 1977, a programme in this direction which has issued four technical reports which give practical recommendations on how to rationalise the use of radiological examinations. Three main directions are considered: (1) Abandonment of routine radiological examinations, as procedures with no clinical or epidemiologic significance and which represent a waste of resources and patient dose. (2) Patient selection for various radiological investigations based on clinical criteria (high, intermediate, low yield). Selected patients have an increased prevalence of the given disease and the predictive value of radiological investigation is much higher. (3) Use of diagnostic algorithms with higher cost/efficiency and risk/benefit ratios, improving the outcome of radiological examinations.
Abandonment (legal)
Cite
Citations (0)