This article describes the application of solid-phase microextraction (SPME) to the recovery of manufacturing by-products and impurities from an illicit drug seizure. The preparation chosen for examination using this technique contained 4-methoxyamphetamine, an hallucinogenic amphetamine that has been encountered frequently in South Australia. Compounds found in the PMA preparation included 4-methoxyphenol, 4-methoxybenzaldehyde, 4-methoxyphenyl-2-propanone, 4-methoxyphenyl-2-propanol, 4-methoxyphenyl-propene, and (tentatively) 4-methyl-5-(4'-methoxyphenyl) pyrimidine. The presence of these compounds suggests that the active drug was prepared from 4-methoxybenzaldehyde via 4-methoxyphenyl-2-propanone using a Leuckardt reductive amination. In this instance, SPME was found to be a simple, rapid, and non-destructive recovery technique that gave results complementary to those provided by conventional liquid-liquid extraction. There is an indication that SPME might find application in profiling of illicit drugs. 相似文献
This study demonstrates that the locus D1S80 is highly polymorphic in the Bahrainian population. There were 24 different D1S80 alleles and 51 distinct genotypes observed in 198 Bahrainians. There was one allele observed that was smaller than the 14 repeat allele. This data set meets the Hardy-Weinberg expectations (HWE) and could be a useful marker for parentage testing and forensic applications. 相似文献
Prostate specific antigen (PSA, also known as p30), a glycoprotein produced by the prostatic gland and secreted into seminal plasma, is a marker used for demonstrating the presence of seminal fluid. Methods for the detection of PSA include Ouchterlony double diffusion, crossover electrophoresis, rocket immuno-electrophoresis, radial immunodiffusion, and ELISA. The extremely sensitive ELISA technique can detect PSA in concentrations as low as approximately 4 ng/mL. However, all these techniques are cumbersome and time consuming to perform in forensic laboratories, especially when only a few samples per week are processed. Various membrane tests are currently used in clinical settings to screen a patient's serum for the presence of PSA at levels greater than 4 ng/mL. In this study we evaluated three immunochromatographic PSA membrane tests by analyzing semen stains stored at room temperature for up to 30 years, post-coital vaginal swabs taken at different time after intercourse, semen-free vaginal swabs, and various female and male body fluids, including urine. The data demonstrate that PSA membrane test assays offer the same sensitivity as ELISA-based tests and provide a rapid approach for the forensic identification of seminal fluid. Furthermore, when the supernatant from a DNA extraction is used for the assay, there is essentially no DNA consumption for determining the presence of PSA in a forensic sample. 相似文献
One consequence of the drug war has been the incarceration of many offenders who pose a health risk to staff. This article presents an analytical framework to examine the factors that influence staffs' perceptions of the threat of infection. Four risk domains influence an officer's self-rated threat of exposure: (1) psychosocial factors, (2) HIV/AIDS-related knowledge, (3) perception of risk in the prison environment, and (4) risk reduction efforts. Officers with lower levels of education, those who worked with medium and maximum custody inmates, and those who had more high-risk encounters with inmates rated their chances for infection as high. Findings are discussed in light of their practical and theoretical applications. 相似文献
Adolescence is perhaps the most difficult period of child rearing for parents. This study attempted to identify disciplinary techniques used by parents as perceived by mothers, fathers, and their adolescent children. Results indicated several significant areas of intrafamilial disagreement in regard to disciplinary techniques utilized, although all subjects tended to agree that some form of verbal reasoning was the primary disciplinary technique utilized with these adolescents.This study was funded, in part, by the Ohio Agricultural Research and Development Center (H-644) and the School of Home Economics, The University of Georgia.Received his Ph.D. in child and family studies from the University of Tennessee. Current interests include adolescent development, family influences on sex-role development, and dual-work families.Received her Ph.D. in sociology from Iowa State University. Major interests include family research methodology, assessment of family power, and marital dissolution.Received her Ph.D. in educational psychology from the University of Texas. Current research interests include parenting, sex roles, and socialization across the life-span. 相似文献
i. Le Moyen‐Orient contemporain. By Guy Feuer, with the collaboration of S. Chauvin and F. Pourcelet. (Guides de Recherches, No. 6) Paris, Fondation Nationale des Sciences Politiques, 1975. pp. 245. 48 fr.
ii. Eléments de bibliographie des études arabes. By Aubert Martin. Paris, Publications Orientalistes de France, 1975. pp. iii, 235. 35 fr.
iii. The Emergence of Arab Nationalism from the 19th century to 1921: A Bibliography. Compiled and annotated by Frank Clements, London, Diploma Press, 1976. pp. x, 290. £10.00
iv. Union catalogue of Arabia Serials and Newspapers in British Libraries. By the Middle East Libraries Committee, edited by Paul Auchterlonie and Yasin H. Safadi. London, Mansell, 1977. pp. xvi, 146. £12.50.
v. Arabia Historical Writing, 1973 & 1974. By Fawzi Abdulrazak. Cambridge, Mass., Harvard University Library, 1974 & 1976. 2v. $ 8.65 (for both vols).
vi. Modern Arabic Literature: A Bibliography of Articles, Books, Dissertations and Translations in English. By Salih J. Altoma. Bloomington, Indiana University, Asian Studies Research Institute, 1975. pp. 73. $ 4.00
vii. The Kurds in Iran, a Selected and Annotated Bibliography. By Wolfgang Behn. London, Mansell, and Munich, Verlag Dokumentation, Publishers, 1977. pp. 76. £6.00
ix. American Doctoral Dissertations on the Arab World 1883–1974. Second edition. By George Dimitri Selim. Washington D.C., Library of Congress, 1976. pp. xviii, 173. Obtainable from: Superintendent of Documents, Government Publications Office, Washington D.C. 20402. Price: outside USA $5.75 plus $1.44 for overseas postage.
x. International and regional politics in the Middle East and North Africa: a guide to information sources. (International Relations Information Guide Series, 6). By Ann Schulz. Detroit, Gale, 1977. pp. xii, 244. $18.00
xi. The politics of African and Middle Eastern states: an annotated bibliography. By Anne Gordon Drabek & Wilfrid Knapp. Oxford, Pergamon, 1976. pp. x, 192. £6.75 相似文献
This article points out two contradictions in current adolescent theory. The first is between the classical point of view, espousing the notion of storm and stress, and the empirical view, supporting a concept of adolescence as relatively peaceful and harmonious. The latter approach, however, creates a second contradiction because it does not explain how young people cope with the major adaptations demanded as a result of changes in their physical, social, and emotional spheres of life. The article examines the status of concepts such as the generation gap and identity crisis and concludes with the formulation of a focal theory of adolescence which attempts to resolve the contradictions discussed earlier.Received his B.A. from McGill University, Montreal, and Ph.D. from University College, London. Is both a developmental and clinical psychologist. Major interests include adolescence and the preschool years. 相似文献