Particles don't have a 'lifespan' in any deterministic sense. Yes, you can retroactively see that a particle is deleted in X frames, but preemptively trying to determine lifespan is a form of the halting problem.
A workaround would be to assign some custom float value to particles ahead of time (ie, assign a max age/lifespan value), then delete particles with a filter that checks if their age is greater than the assigned float value. Then you can also use that float value to normalize the UVWs, but you'd have to use a Script operator to do that normalization for now (it's easy, just something to be aware of).
A workaround would be to assign some custom float value to particles ahead of time (ie, assign a max age/lifespan value), then delete particles with a filter that checks if their age is greater than the assigned float value. Then you can also use that float value to normalize the UVWs, but you'd have to use a Script operator to do that normalization for now (it's easy, just something to be aware of).