By analyzing how much racemization of its aspartic acid occurred, scientists can determine how old the tooth's owner was at death - generally accurate to about 5.5 years, plus or minus 4.2 years.
The characteristics of spiral deformation on ASSEL mill and wall thickness accuracy for thick, middle and thin tubes with various D/S value have been analyzed.
The monitoring data in state controlling air sampling sites have been statistically treated to analyze pollution situation and regularity of NO2 and O3 in Nanjing Area.
According to the magnetic susceptibilities of NO and NO2, the influences of these two gases on the analyzer are analyzed, and the application environment for the oxygen detector is discussed.
In the light of bending of radiation tube in cracking furnace, analysis is done in detail to present related prevention, adjustment and correction measures.
The article points out the role of psychological trace in cracking the case through the analysis and study of the psychological trace of the criminal of and exceptionally violent murder.