SUBJECT INDEX 



4GU 



Cosmic rays, definition, 430 



level of, 89 

 Cost of radioisotopes, 446-451 

 Count (radiation measurements) {see 



Counter) 

 Counter, definition, 172, 430 

 dipping, 187 

 efiiciency of, 431-432 

 gamma, 188 

 gas, 433 



gas-flow, 18G, 433 

 Geiger, 433 

 internal, 186, 225 

 needle, 195 

 probe, 195 

 proportional, 438 

 scintillation, 188-189, 440 



liquid, 189, 251 

 sensitivities, 174 

 {See also individual isotopes) 

 Counter tube, Geiger-Miiller, 172, 433 

 proportional, 438 

 self-quenched, 441 

 thin-window, 186, 442 

 windowless (internal), 186 

 Counting, errors in, calculation, 173 

 definition, 441 

 in vivo methods, 192-195, 256-257, 



285, 289, 300, 303 

 instrumentation (see Instrumentation) 

 losses determination, 175 

 rate, 172, 430 



sample preparation {see Sample prep- 

 aration for counting) 

 in solution, 187-188 

 statistics, 172-173 

 Counting-rate meter, 106, 185, 430 

 Counts, spurious, 441 



shown by high background, 185 

 Critical organ, definition, 98 



(See also individual isotopes) 

 Cross-contamination in sampling, 159 

 Cross section, 430 

 for isotopes, 417-418 

 in radioactivation analysis, 415-416 

 in relation to radiochemical impuri- 

 ties, 61 

 Crucibles for ashing, 162 

 Curie (c), 86, 430 

 Cutie Pie, 106 

 Cyclotron, 430 



for radioactivation analysis, 419 

 Cytochrome C, labelled, 263 



Data, expression of, 195-197 

 Dating with C'\ 49-50 

 Daughter, 430 



Dead time (counters), 430 

 Dead-time correction, 430 

 Decade scaler, 430 



Decay, radioactive, composite curves, 

 20-23 

 definition, 430 

 equations, 19-20 

 Decay constant, 20,^431 

 Decay curve, 430 

 Decay product, 430-431 

 Decontamination, definition, 431 

 procedures, 99-101 

 of surfaces, 101 

 Densitometer, 431 

 Density (photographic), 431 

 Desorption, 431 

 Desoxyribonucleic acid biosynth(>sis, 



348-349 

 Detection of spots in paper chromatog- 

 raphy, 368 

 Detector (radiation), 431 

 Developing of film, 327 

 2,6-Dichlorophenolindophciiol reagent, 



369 

 2,6-Dichloroquinonechloroimide reagent, 



370 

 Differential absorption ratio, 431 

 Digestibility, endogenous values for de- 

 termination of, 15 

 Digestion of samples (see Ashing) 

 Dihydroxyacetone in photosynthesis, 42 

 p-Dimethylaminobenzaldehyde reagent, 



370 

 Dipping counter, 187 

 Discriminator, pulse-height, 193, 439 

 Disintegration (nuclear), 431 

 Disintegration constant, 20, 431 

 Disintegration rate, 431 

 Disposal of radioactive wastes {see Waste 



disposal) 

 Dissociation constants, ion-exchange 



studies, 406-407 

 Dogs, administration of isotopes, 139-145 

 blood collection, 148 

 fibrinogen turnover rate, 37 

 management requirements, 129 

 metabolism cages, 132 

 phosphatide turnover, 26-28 

 removal from blood, ions, 36 

 sodium, 32-37 

 Dosage levels for autoradiograms, 327- 

 328 

 {See also individual isotopes) 

 Dose (see Radiation; Radioisotopes) 

 Dose-effect curve, 431 

 Dose fractionation, 431 

 Dose meter (dosimeter), 431 

 Dose rate (dosage rate), 431 



