Browsing by Subject "Narcotics"
Now showing items 1-4 of 4
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Classification of narcotics in solid mixtures using principal component analysis and Raman spectroscopy
(ASTM International, 2002-03-01)Eighty-five solid samples consisting of illegal narcotics diluted with several different materials were analyzed by near-infrared (785 nm excitation) Raman spectroscopy. Principal Component Analysis (PCA) was employed to ... -
Identifications and quantitative measurements of narcotics in solid mixtures using near-IR Raman spectroscopy and multivariate analysis
(1999)Raman spectroscopy offers the potential for the identification of illegal narcotics in seconds by inelastic scattering of light from molecular vibrations. In this study cocaine, heroin, and MDMA were analyzed using near-IR ... -
Life expectancy and productivity loss among narcotics addicts thirty-three years after index treatment
(Routledge, 2006-09-22)This study computed the life expectancy of a cohort of male narcotics addicts followed for 33 years and assessed the productivity lost as a result of premature mortality. The future life expectancy was constructed for the ... -
Machine learning methods for quantitative analysis of Raman spectroscopy data
(Society of Photo-optical Instrumentation Engineers (SPIE), 2003-08-27)The automated identification and quantification of illicit materials using Raman spectroscopy is of significant importance for law enforcement agencies. This paper explores the use of Machine Learning (ML) methods in ...