Passive sentences with present simple tense are extensively used in the abstracts of scientific papers. For example, we may read
- In this work, the melting point of copper is calculated with a new method.
the active form of which is
- In this work, we calculate the melting point of copper with a new method.
Considering the fact that present simple tense is usually used to express repeated actions, routines and permanent facts, why is it used in this case?