Sentences with phrase «signs of microbial activity»
Depth horizons with functional genes indicative of methane - cycling and sulfate - reducing microorganisms are enriched in solid - phase sulfur and total organic carbon, host δ13C - and δ34S - isotopic values with a biological imprint, and show clear signs of microbial activity when incubated in the laboratory.
http://science.sciencemag.org/ Not exact matches
These «false» biosignatures could potentially be misinterpreted as signs of biological activity due to their strong resemblance to microbial structures.
Risk Assessment Form (3) Required for projects using hazardous chemicals, activities or devices, and some PHBA's including protists, composting, coliform test kits, decomposition of vertebrate organisms and microbial fuel cells and must be completed and signed by the DS or QS prior to student experimentation.