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Forensic Examination of Heroin and Its Cutting Agents

In order to successfully counter the ever-growing drug problem, there is an increasing need, to identify conspiracy links and trafficking routes and to gather background intelligence concerning both the number of sources of drugs and whether those sources are within a country or are “internationally” based and also the points of distribution and distribution networks. A scientific tool to complement routine law enforcement investigative work in this field is the characterization and impurity profiling and cutting agents of seized drugs. Drug characterization studies have shown that it is possible to link samples, to classify material from different seizures into groups of related samples and to identify the origin of samples. Such information can be used for evidential (judicial, court) purposes or it can be used as a source of intelligence to identify samples that may have a common origin or history.
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Review on Transdermal Drug Delivery Systems

Recently, transdermal drug delivery system (TDDS) has become a more and more important approach to administering drugs. Based on its advantages, which are not achievable by other modes of administration, many researchers are dedicated to the study of it, and have made great progress. Although the skin offers a painless interface for systemic drug delivery, it also presents limitations which are mainly caused by the stratum corneum.
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