- By observing microstructures , we find they may form spheroidal A,acicular A and feathery A .
- The extract was further purified by column chromatography to get the acicular crystals of reserpine of 99.
- A double acicular electrostatic device was designed.Experiments were conducted with an experimental model established.
- The acicular and columnar shapes of aragonite crystals are preserved even after aragonite changes into calcite.
- The iron content of grainy crystal was the most, acicular crystal taking second place.