hope everone is well, I have a formulae which calculates the safe exposure time for Ultra Violet light. The formulae is shown below:

Iuv= Ker.∫Eλ . Ser(λ) dλ

http://meteo.lcd.lu/papers/uv/uvi/uvi_01.html

I would appreciate it, if someone can give me a hand in solving this equation.

Would it be solved using integration in parts method. Also how do I deal with lambda.

Thanks Jag.