Forensic Drug Identification by Gas Chromatography- Infrared Spectroscopy . Award Number: 2008-DN-BX-K161 . Robert Shipman, Trisha Conti, PhD, Tara Tighe, MS and Eric Buel, PhD . ABSTRACT . The primary goal of the forensic drug examiner is the unequivocal identification of any controlled substance present in a drug exhibit. Most forensic laboratories routinely employ Gas Chromatography/ Mass Spectrometry (GC/MS) as the preferred method for this examination.
Vasodepressor syncope is a common medical problem that can usually be diagnosed through an accurate history and upright tilt testing. In most cases, long-term therapy is not necessary, and the majority of patients experience a striking decrease in syncopal episodes following a tilt test and the ensuing reassuring explanation from their physician.
Vasoconstriction is a narrowing of the blood vessels resulting from contracting of the muscular wall of the vessels. When blood vessels constrict, the flow of blood is restricted or slowed.It is the opposite of vasodilation, the widening of blood vessels.Factors causing vasoconstriction are called vasoconstrictor, also vasopressors or simply pressors. Vasoconstriction usually results in an increase of the blood pressure.Vasoconstriction may be slight or severe.t is the opposite of vasodilation, the widening of blood vessels. Factors causing vasoconstriction are called vasoconstrictor, also vasopressors or simply pressors. Vasoconstriction usually results in an increase of the blood pressure. Vasoconstriction may be slight or severe.