Analysis of the ex-vivo transformation of semen, saliva and urine as they dry out using ATR-FTIR spectroscopy and chemometric approach.

The ex-vivo biochemical changes of different body fluids also referred as aging of fluids are potential marker for the estimation of Time since deposition. Infrared spectroscopy has great potential to reveal the biochemical changes in these fluids as previously reported by several researchers. The present study is focused to analyze the spectral changes in the ATR-FTIR spectra of three body fluids, commonly encountered in violent crimes i.

Towards the investigation of shooting incidents: evaluation of fracture pattern on polymethylmethacrylate sheet made by .22 and .177caliber air rifle.

Scientific examination of the physical evidence provides significant information beyond a reasonable doubt. Due to the increasing use of the glassy polymer i.e.