organic semiconductors: I've read a couple of articles
and some imply that tunneling and hopping are...
organic semiconductors: I've read a couple of articles
and some imply that tunneling and hopping are essentially the same
and others state differently. can someone please explain
What are some of the problems associated with mining phosphate
rock? I've read toxic elements like cadmium and I believe uranium
and selenium are found in phosphate rock deposits, but would like
for somebody to confirm this with a credible source I can use in a
paper. Also are these toxic elements also found in superphoshpate
fertilizers? I am trying to understand the impact phosphate mining
and phosphate fertilizers have on the soil and appreciate any
sources and/or information relevant...