Please capitalize where necessary: von koch was then appointed to the chair of pure mathematics at the kth.
A: Von Koch was then appointed to the chair of pure mathematics at the KTH.

Please capitalize where necessary: the extremely accurate and intensive laser energy triggers a thermal reaction in a fraction of a millisecond.
A: The extremely accurate and intensive laser energy triggers a thermal reaction in a fraction of a millisecond.

Please capitalize where necessary: for questions about this blog, please contact email.
A: For questions about this blog, please contact email.

Please capitalize where necessary: we need food and we need clean freshwater to produce our food.
A:
We need food and we need clean freshwater to produce our food.