Life with Tracers

Transport of Passive Tracers in Baroclinic Wave Life Cycles

The transport of passive tracers in idealized baroclinic wave life cycles is studied using output from the National Center for Atmospheric Research Community Climate Model (CCM2). Two life cycles, LCn and LCs, are simulated, starting with baroclinically unstable initial conditions similar to those used by Thorncroft et al. in their study of two life cycle paradigms. The two life cycles LCn and ...

Do tracers trace?

O NLY A FEW YEARS after the discovery of artificial radioisotopes by the Joliot-Curies in 1934, de Hevesy, Chievitz and Ottesen used tracers in hematology. Even today, there are few areas in clinical medicine where as many radioisotopes are used both for investigative and diagnostic purposes as in hematology. Consequently, the methods of tracer studies are often described in the hematologic jou...

PET tracers and radiochemistry.

This paper provides a brief review of the radiochemistry of radiopharmaceuticals used in positron emission tomography (PET). It includes some history of PET, the basic formation of radionuclides in a cyclotron target, the processing of the precursor molecules into a useful PET radiotracer and the clinical significance and outlook for PET radiotracers. This review is based on a series of recent ...

Radioactive Tracers in Biology

Everybody talks about the atom, but few have more than a Sunday supplement knowledge of the simpler aspects of nuclear phenomena. The author, M.D. and Ph.D., and a member of the staff at Brookhaven, treats the story of the atom from its earliest historical conceptions to its possibilities in future war and peace. The style is of the simplest; no previous familiarity with mathematics or physics ...

Radioactivation Analysis and Isotopic Tracers