Publications by authors named "Nobuaki Okabe"
Article Synopsis
- Radionuclides from 20th-century nuclear activities significantly impacted earth's surface environments, especially in tropical and subtropical shallow-water corals, which record these changes in their skeletons.
- A study of coral from Rowley Shoals shows distinct time series records of iodine (I/I) and carbon (ΔC) levels, revealing increases linked to U.S. atmospheric nuclear tests, particularly between 1955 and the late 1970s.
- The data suggest that the I/I ratio serves as a more reliable indicator of anthropogenic influence in ocean waters compared to ΔC, due to natural dilution processes affecting carbon more significantly.
A bromate (BrO)-reducing bacterium, designated Rhodococcus sp. strain Br-6, was isolated from soil. The strain reduced 250 μM bromate completely within 4 days under growth conditions transitioning from aerobic to anaerobic conditions, while no reduction was observed under aerobic and anaerobic growth conditions.
View Article and Find Full Text PDF