Opiate testing is one of the most frequently requested assays in the death investigation of suspected drug overdoses. Screening assays typically target morphine, whereas more specific assays are able to positively identify and quantitate the particular opiate present in the specimen. Because many opiates are metabolized to morphine, it is often desirable to differentiate heroin-related deaths f...

Design Automation Systems such as MICON rely heavily on database systems for design information retrieval. In our current configuration, over 90% of the system synthesis time is spent on accessing the database. Here we address the significance of the database system by considering three database issues. First, a way to compare the performance of different database systems while embedded in a co...

Keywords--Determinat ion of polynomial zeros, Simultaneous iterative methods, Convergence analysis, Accelerated convergence, R-order of convergence. 1. I N T R O D U C T I O N The problem of determining polynomial zeros has a great impor tance in theory and practice (for instance, in the theory of control systems, digital signal processing, s tabil i ty of systems, analysis of transfer function...

Isotope discrimination is a common feature of biosynthesis.in nature, with the result that different classes of carbon compounds frequently display different IsC/isC ratios. The 18C/iSC ratio of lipid in potato tuber tissue is considerably lower than that for starch or protein. We have collected respiratory COs from potato discs in successive periods through 94 hr from the time of cutt ing--an ...