id	keyword
american_scientific_journal-4077	water
american_scientific_journal-4077	figure
american_scientific_journal-4077	area
american_scientific_journal-4077	research
american_scientific_journal-4077	study
american_scientific_journal-4077	risk
american_scientific_journal-4077	concentration
american_scientific_journal-4077	engineering
american_scientific_journal-4077	analysis