| radioactivity levels of staple foodstuffs and dose estimates for most of the tanzanian population. | levels of natural radioactivity in staple food products (maize and rice) from various localities of tanzania have been studied. the average activity concentrations of 40k, 232th and 238u in maize were 48.79 +/- 0.11, 4.08 +/- 0.01 and 13.23 +/- 0.10 bq kg(-1), respectively. in rice the concentrations of 40k, 232th and 238u were 24.67 +/- 0.03, 3.82 +/- 0.02 and 5.02 +/- 0.02 bq kg(-1), respectively. 137cs was detected in only one sample collected in zanzibar. the sample, with activity concentrat ... | 2007 | 18268378 |
| isolation, characterization and beneficial effects of rice associated plant growth promoting bacteria from zanzibar soils. | this study was undertaken to isolate and characterize plant growth promoting bacteria (pgpb) occurring in four soils of zanzibar, tanzania as well as to evaluate their potential use as biofertilizers for rice. a total of 12 pgpb strains were isolated from rice and studied for growth characteristics, carbon/nitrogen source utilization patterns using qts-24 kits, phosphate solubilization, indole acetic acid (iaa) production, antibiotic resistance patterns and growth at different ph, temperature an ... | 2004 | 15162398 |