AIMS To analyse long term effects on the lens of radium irradiation during infancy. METHODS An infant cohort (n = 20, median age 6 months) treated for skin haemangioma with one or two radium-226 needles located at or within the orbital rim was examined 30 to 45 years after gamma radiation. Detailed information about the treatment procedure was available for all cases. Subcapsular opacities we...

At the beginning of the century, in the preparation for an extensive and long-term colonial exploitation, beside the investment on construction of infrastructure, French colonists opened a range of schools and training institutions including a medical school (founded 1902) to train local intellectuals for their future purposes. A range of indigenous protectorate hospitals were also established....

Short-lived radium isotopes (223Ra and 224Ra) are used to investigate the potential association between groundwater discharge and microbial pollution at Huntington Beach, CA. We establish the tidally driven exchange of groundwater from the surficial beach aquifer across the beach face. Groundwater is found to be a source of nutrients (silica, inorganic nitrogen, and orthophosphate) to the surf ...

In our studies on the radiochemical reaction effeeted by the radiations (beta and gamma) from radium emanation in which enzymes are inactivated we have stated that in a given system the chemical change is a function of the product of two variables; namely, the average amount of emanation present, Eo, and time, t. Theproduct of these two variables has been equated to a single variable, W, for wh...

The measurements of Ra, Th and K using gamma spectrometry and radon concentration and exhalation rates measurements using solid state nuclear track (LR-115, Type-II plastic) detectors are used to asses a first order exposure risk for the persons residing in Fatehbad and Hissar districts of Western Haryana, India. The concentration of Radium, Thorium and Potassium in the soil samples varies from...

with so few individuals tested. Aside from these two mutations from this treated capsule and three or four mutations which occurred in Fl's from a haploid, we have not yet determined any gene mutations in Datura Stramonium. There were tested by selfing about 400 individual parents in the F2 or later generations from the haploid 1A without discovering a single gene mutation. Following treatment ...

Radium isotopes are powerful proxies in oceanography and hydrology. mass balance models, including assessments of submarine groundwater discharge (SGD), often overlook particle scavenging (PS) as a pathway for dissolved radium removal from the world ocean. Here, we build global ocean 226Ra model reevaluate potential importance PS. We find that PS is major sink upper ocean, removing about 96% to...