Keyphrases
Enzyme Activity
100%
Coal Fly Ash
100%
Sludge Mixture
100%
Sandy Soil
100%
Sewage Sludge Fly Ash
100%
Fly Ash
75%
Sewage Sludge
50%
Urease Activity
50%
Incubation Time
50%
Dehydrogenase Activity
50%
Water-soluble
25%
Adverse Effects
25%
Zn Content
25%
Cu Content
25%
Heavy Metal Availability
25%
Soil Enzyme Activity
25%
Dewatered Sewage Sludge
25%
Nutrient Cycling
25%
General Trends
25%
Soil Microbial Activity
25%
Sludge Amendment
25%
Mn Content
25%
Metal Availability
25%
Amended Soil
25%
Fly Ash Amendments
25%
Soil Microorganisms
25%
Zn-Mn
25%
Phosphatase Activity
25%
Soil nutrient Cycling
25%
Earth and Planetary Sciences
Sewage Sludge
100%
Sludge
100%
Fly Ash
100%
Sandy Soil
100%
Enzyme Activity
100%
Ash
80%
Nutrient Cycling
40%
Heavy Metal
20%
Soil Microbial Activity
20%
Soil Enzyme Activity
20%
Soil Nutrient
20%
Soil Microorganism
20%
Agricultural and Biological Sciences
Sewage Sludge
100%
Enzyme Activity
100%
Coal Fly Ash
100%
Sandy Soil
100%
Sludge Ash
71%
Urease
28%
Oxidoreductase
28%
Heavy Metal
14%
Soil Enzyme Activity
14%
Soil Microbial Activity
14%
Soil Microorganism
14%
Soil Nutrient
14%
Immunology and Microbiology
Enzyme Activity
100%
Microbial Activity
50%
Soil Microflora
50%
Incubation Time
50%