The CAlifornium Rare Isotope Breeder Upgrade (CARIBU) is a new radioactive beam facility for the Argonne Tandem Linac Accelerator System (ATLAS). The facility utilizes a Cf fission source coupled with an electron cyclotron resonance (ECR) ion source to provide radioactive beam species for the ATLAS experimental program. The californium fission fragment distribution provides nuclei in the mid-ma...

The contribution of retrograde coronary flow to total collateral flow was examined transmurally in anesthetized, open-chest dogs subjected to acute obstruction of the left anterior descending coronary artery. Regional coronary flow in normal and ischemic tissue was reflected by the tissue content of radioisotopes of potassium and rubidium and by radioactive microspheres. To measure total collat...

Possible strategies of the development low-energy nuclear physics in Russian Federation on basis DERICA (Dubna Electron–Rare Isotope Collider fAcility ) project is examined. a multiuser multipurpose facility for production and study radioactive isotopes (RI). In research program DERICA, emphasis placed studying RI collector rings, but stage-by-stage implementation would make it possible to addr...

IN 1950, Gray and Sterling1 investigated the distribution of radioactivity in washed human erythrocytes after incubation of whole blood with radioactive sodium chromate ( Na2Cr51O4 ) . They found that over 90 per cent of the isotope was bound to the globin of hemoglobin and the remainder was associated with the red cell stroma. The heterogeneity of normal human hemoglobin2’3 and the existence o...

Naturally occurring radioactive materials (NORM) found in liquid wastes from hydraulic fracturing are an emerging environmental health concern. The heavily drilled Marcellus Shale, for example, contains isotopes of radium, polonium, and lead. However, the few studies that have focused on NORM in fracking wastewater (produced fluids) have reported on a single element—radium. In this issue of EHP...

The use of radioactive iodine as an indicator in thyroid physiology has been described by Hertz, Roberts and Evans (1) and by Hertz, Roberts, Means and Evans (2, 3). Hamilton and Soley (4) have published data obtained by the use of radioactive iodine on goiter patients of several types. We have administered radioactive iodine (mainly the 8-day isotope I's1), obtained by bombarding tellurium wit...

It is well known that the animal organism has the ability of converting both inorganic selenium and tellurium into volatile substances which are exhaled in the respiratory gases. The nature of the volatile tellurium compound has been shown to be a methylated telluride, while the contention of Hofmeister that the exhaled selenium compound is likewise a methyl derivative (1) lacks to date adequat...

We investigated the N-utilizing bacterial community in anoxic brackish groundwater of the low and intermediate level nuclear waste repository cave in Olkiluoto, Finland, at 100 m depth using (15)N-based stable isotope probing (SIP) and enrichment with (14∕15)N-ammonium or (14∕15)N-nitrate complemented with methane. Twenty-eight days of incubation at 12°C increased the concentration of bacterial...