924 INDEX Cayenne, French Guiana tritium concentrations since 1961, 65556 Cereal grains cesium-137_content in Chicago, 788 consumption in U, S. diets, 880 Cerfum-141 activity ratios in rain, 605, 608 activity in 235U fission product mixture, 99, 101 contribution to total fission product activity, 30, 33 determination in particles from Dominic Operation, 108-18 determination in rain and snow samples, 603 determination in rainwater, 569, 574, 575, 577, 578 determination in surface air, 498 disintegration ratio to 98Mo before Sedan and Small Boy bursts, 93-6 fractionation index in Sedan and Small Boy bursts, 94-7 fractionation ratio with Zr data from silicate bursts, 72-81 Cerium-143 contribution to total fission product dose rate, 33 Cerium-144 activity in atmosphere above Pacific Northwest, 432, 433 activity-particle size relations in stratosphere, 172 activity ratios in air during 1962 testing series, 489 activity ratios, fractionation studies, 246-47 activity ratios in rain, 605, 608 activity ratios in stratosphere, 174-80, 413-15 activity relation to particle diameter, 128 activity in 235U fission product mixture, 99, 101 concentration in air at Richland, Washington, 206-7 contribution to total fission product activity, 30, 33 determination along 80th meridian during 1962 testing series, 487-93 determination in particles from Dominic Operation, 108-18 determination in rain and snow samples, 603 determination in stratospheric aerosols, 158, 163-64 determination in surface air, 498 sphere, 212 fractionation behavior in silicate bursts, 72-81 fractionation index in Sedan and Small Boy bursts, 94-6 fractionation ratio with %Zr, data from silicate bursts, 72-81 measurementin air filter samples by gamma ray spectrometry, 198-99 precipitation effects on deposition, 214-15 washout factors, 725 Cerium-144 systems (144Ce-14Pr) determination in rainwater, 569, 574, 575, 577, 578 fallout levels in 1962-1964, 196 CERT (see Controlled Environmental Radioiodine Tests) Cesium adsorption by plants, 899 availability to animals from natural feeds, 896-97 distribution in reindeer muscles, 899 intake estimates from urine analysis, 902 uptake by plants from soil, 899-900 Cesium-134 concentration in air at Richland, Washington, 206-7 contribution to total fiasion product activity, 30 distribution with altitude in 1962 and 1964, 211 measurementin air filter samples by gamma ray spectrometry, 198-99 Cesium-136 fractionation ratio with 95Zr, data from silicate bursts, 72-81 Cesium-137 activity ratios in atmosphere over Pacific Northwest, 434, 435 activity ratios in stratosphere of southern hemisphere, 413-15 activity ratios in surface air, 500-4 activity relation to particle diameter, 128 activity in 235) fission product mixture, 99, 101 biological half-life in cows, 869 body burdens in Norwegian school boys, 859-64 concentration in air at Richland, Washington, 206-7 content in alfalfa, variations in, 717-18, 720-22 content in human body in Chicago, 786-90 content in human diet in Chicago, 787-88 shot time, 93-4 content in milk, variations of, 718-22 content in Norwegian milk, correlation Boy shot time, 95-6 content in Rongelap diet, 898-99 1964, 211 content in soils, variation in, 711-17, 722 content in Texas wheat, 785, 787 contribution to total fission product disintegration ratio to 99Mo at Sedan disintegration ratio to 9§Mo at Small distribution with altitude in 1962 and distribution with altitude in stratosphere, 166-67, 169, 171 distribution with latitude in strato- with precipitation, 865-76 content in soil in Chicago, 784-86

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