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Oak Bidge National Laboratoq Internal Dose Studies. have been analyzed for the trace elements by spectrographic analysis. Of particular interest are the strontium and chromium values and the appearance of these two elements'in all of the tissues analyzed. mium is found i n most adults' tissue but i n only a very few of the still ' birth tissues which were analyzed. has been established i n three more cities inthe United States, Tissues from autopsies of 7 human stillbirths The tissue collection program Experimental Ecology Program. Studies of carrier strontium taken up by bean plants from Conasauga share indicate strontium-90 from natural sgils will be concentratedto a higher degree i n leaves, than inthe other parts of the plant; that the concentration factor will be approximately six-fold; and that this factor may depend on the total amounts of strontium available i n the soil. active strontium absorbed and translocated t o leaves declines a s more carrier strontium is available i n the soil. soil appears t o be almost independent of soil saturation with calcium, atleast in the earlier stages of plant growth. Strontium can replaoe calcium on the s o i l colloid t o make adequate amounts of potassium and magnesium available for plant growth. The amount per unit weight of Uptake of calcium from the Professional Health Physics Tmining Program. Education and Training Section of the Health TJhysics Division, Dr. Elda E. Anderson and Myron F. Fair, conducted a 5-week course i n radiation protection a t the Institute of Radiophysics, Karolinska Hospital, Two members of t h e ORNL - The course w a s held from November lk - December 16. W Ridge Institute of Nuclear Studies District of Columbia have been received by the University Relations Division for the 1956 summer Oak Bdge Research Participation Program; this number represents an increase i n applications over the past several years. Seventy-eight o f t h e current applications are staff members from 27 of the Institute ' s sponsoring universities, and the remainder represent 49 other colleges and universities, located primarily inthe South , More than UO applications f r o m 33 states and the offered this spring have been changed since reported last month. advanced hematology course will be presented May vanced medical course i s now scheduled f o r May 2 1 - 25. Dates for two of the ORINS advanced courses t o be
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BIOLOGY AND MEDICINE Medicine.,. Four medical spectrometers, three from Detectolab, one from . Reed-Cur%is Scientific Instrument Company have been subjected t o tests of monochromatic pulses. cations, have shown remarkably good stability characteristics, Mndowwidths, and energy calibrations :. The Reed-Curtis machine, as' del be red, had a window-width which collapsed a t high energies. opportunity t o ,investigate other makes of medical spectrmeters inthe ORINS shops, but after inspecting other makes a t expositions, it appears that they do not meet the specifications set up for the medical spectroThe Detectolab machines, after slight,modifiThere has been no The thyroid-uptake calibration problem on isoresponse curves run a t various energies shows that the activity seen by any specific collimator will be a marked nonlinear function of energy. atandard techniques, but at specific energy levels, show a marked vari - ation with energy. Uptake measurements using Spectrometry done with the twenty-channel analyzer on human patients shows t h a t the spectrum of energy received by a detector from various p a r t s of the.body and in patients with and without thyroids .is significantly different. A l l of the investigations on thyroid-uptake calibrations to date .indicate a necessity for careful energy discrimination. It would appear atthe present time to be impractical t o make this the basis fora recommendation for thyroid-uptake calibration. After a long delay, the calibration program has been extended tothe West Coast under Drd Baymond Libby of the University of California at The spectrometry carried out by Dr, George Meneeley, Vanderbilt Universi. indicated a minor fault in the aluminum thyroids of the mannequins being used inthe thyroid-uptake survey. bration Committee's calculations, the fault has been corrected. The correction has been made t o date, on three of the seven mannequins. The following physicians are expected t o join the ORINS staff in January as resident physicians: Dr. Bernard T o Hichan, Oschner Foundation Hospital, New Orleans Dr. Harry M. Walsh, Wayne County General Hospital, Eloise, Michigan Dr. Jan Wybranoski, St.Mary9s Memorial Hospital, Knoxville Fearghus O'Foghludha, a health physicist from Dublin, Ireland, is a l s o expected to join the staff ~ January asa
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BIOMGY AND MEDICINE st ration exhibit made six December appearances in Ohio and Kentucky before a total audience of 674s. The demonstration is scheduled t o make thirty-nine appearances i n New Jersey between January 4 and December attendance a t t h e American Xuseum of Atomic Energy totaled 2028, including b52 free admissions, which brings the grand total for Museum attendance; as of December 31, t o 508,765. ance during 1955 was 88,722, the highest on record for any calendar