the treatment of thyroid cancer using an unsealed source of radioactive materials is usually associated with a large amount of 131i. a major problem for hospital admission of these patients is the waste disposal which requires protection of the public. 152 patients with thyroid cancer admitted to the nuclear medicine department of said ai- shohada hospital for ui i treatment were studied. 1311 ...

1 Michael R. Graham, Llantarnam Research Academy, Newport Road, Llantarnam, Cwmbran, NP44 3AF, UK. 2 Bruce Davies, Health and Exercise Science Department, University of South Wales, CF37 1DL, UK 3 Julien S Baker, Director of Research, Institute of Clinical Exercise and Health Science, Exercise Science Research Laboratory, School of Science, University of the West of Scotland, Hamilton, Lanarksh...

The building of complex systems from basic logic gates is one of the hallmarks of circuit design in electrical engineering. The question arises whether a similar strategy can be adopted for the design of artificial biological systems. In this paper, we present the design of two logic gates, a biological ANDand a biological XOR. They can be combined to produce a half-adder, one of the fundamenta...