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A portable low radioactivity probe was developed for the determination of ash in coal stockpiles. The probe employs two radioactive gamma-ray sources 133 Ba and 137 Cs of combined activity 1.5 MBq.
Drought is a major constraint to the productivity of rice in upland ecosystems. The rice root system plays an important role in the regulation of water uptake and extraction from deep soil layers. The aim of this research was to study the variation in root morphology and the genetic diversity in upland rice accessions. Thirty-three upland rice accessions originated from Vietnam along with 13 selected...
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