Penulis: Lucas A. Becker

Helium is the chemical element with atomic number 2 and an atomic weight of 4.002602, and is represented by the symbol He. It is a colorless, odorless, tasteless, non-toxic, inert monatomic gas that …

Today’s irrigation management faces challenges and competition with other sectors (ie, household, industry, and environmental), quality degradation, and uncertain climatic conditions. To cope with th …