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Exact(1)
By examining the nitrification speed, denitrification speed, TN emission requirements, operation cost, etc. Jin et al. (2003) showed that when the S/TN is approximately 5 in the denitrification stage, the treatment efficiency and operation stability could be ensured.
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This would reduce the required operation cost.
Commercial production of unconventional oil and gas resources will not be easily achieved without large-scale engineering measures, let alone the additional operation cost, increasingly stricter requirement for safety and environment, fluctuating low oil and gas prices, etc., defeating the confidence of those investors.
However, they have some drawbacks, including high background noise, extended time and labor requirements, lack of specificity, lack of sensitivity, and a high entry and operation cost.
WGS is the standard in comprehensiveness, but incurs high operation cost, large computation workload and multi-microgram DNA requirement.
The operation cost Petrobras $34bn dollars.
How much will the operation cost?
operation cost Min.
Operation cost and wind curtailment.
Operation cost for battery storage includes the depreciation of investment cost and daily operation cost.
2) Operation cost and wind curtailment .
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com