Using xenon as a fill gas in IFE chambers results in generating a large amount of radioactive xenon, iodine, and cesium isotopes. The cesium isotopes, Cs and Cs, and the iodine isotope, I, would produce a high level of off-site dose (62.13 rem) at the plant site boundary if they were released entirely to the environment during an accident. The xenon gas is pumped out of the chamber (recycled) d...

When the former method is employed for production, enriched uranium irradiated for 2-3 weeks in the nuclear reactor is dissoivoc! in nitric acid and the iodine-131 is distilled and collected. '*) But separation of iodine-1 31 from pile irradiated tellurium targets is the most commonly used method of production. The methods <d Reparation varies for different targets. With metal tellurium the tar...

From iodine-plutonium-xenon isotope systematics, we re-evaluate time constraints on the early evolution of the Earth-atmosphere system and, by inference, on the Moon-forming event. Two extinct radioactivites (I, T1/2 = 15.6 Ma, and Pu, T1/2 = 80 Ma) have produced radiogenic Xe and fissiogenic Xe, respectively, within the Earth, which related isotope fingerprints are seen in the compositions of ...

A convenient m ethod is presented for estimating isotope effects in reactions which yield waterto The water-t is separated by freez e!=h~yjng, and k*/k is calculated froJ? .t!J.e extent of the reaction and the ratio of the radioactIvIty of t he water-t to that of the lnItlal reactant. Application of the method to the oxidation of aJdoses-1-t at 25°C with iodine in a lkaline solution gives value...

Silver doped zeolite (AgX) has attracted significant attention as a good adsorbent of organic iodine (CH3I) in the gas phase. Heat treatment waste, which is composed iodine-sorbed AgX, may be necessary for disposal, would removed from AgX at high temperature. Therefore, sorption and desorption behaviors CH3I on X (13X) were investigated. Herein, labeled by 125I tracer was synthesized via isotop...

introduction: iodine deficiency disorders (idd) are the most common epidemiological problems in the world, including our country. in order to prevent idd and its consequences, iodized table salt is being used in our country since 1989. at present, this program is 18 years old. the surveillance of idd may be implemented to assess the prevalence of idd, identify high risk areas for intervention a...

A convenient method is presented for est imating isotope effects in reactions which yield water-J. T h e water-2 is separated by freeze-drying, and k*/k is calculated from the extent of t he reaction and the rat io of the radioactivi ty of the water-Z to t h a t of the initial reac tant . Application of the method to the oxidation of aldoses-l-£ a t 25 °C with iodine in alkaline solution gives ...

A patient presented with hyperthyroidism and end-stage renal disease requiring hemodialysis that was difficult to control despite increased dosages of anti-thyroid drugs. The condition could finally be controlled by 131I radioactive iodine therapy (RIT) and hemodialysis provided under a hospital-linkage system. During three hemodialysis sessions after the oral administration of 131I, we measure...