Errors in the estimation of the distance of fall and angles of impact blood drops.

This paper presents derived equations for the estimation of the variances in the estimated distance of fall and the estimated angle of impact for blood droplets. The derived equation for the variance of the estimated distance of fall predicts that as the blood drop size approaches that of a blood droplet falling at terminal velocity, the variance of the estimate grows without limit. The derived equation for the variance in the estimated angle of impact shows that as the angle of impact approaches 90 degrees, the variance grows without limit. The validity of the equation for the estimated variance of the angle of impact was tested for five angles of impact (15, 30, 45, 60 and 75 degrees); the equation correctly predicted the observed variance up to an angle of 60 degrees.     

The personal impact of delivering a one-to-one treatment programme with high-risk sexual offenders: Therapists' experiences

Abstract

Previous research suggests that delivering treatment for sexual offenders can have both positive and negative effects on therapists. We know less about the specific impact of conducting such work in different ways; for example, individually rather than in groups. This study aimed to explore the experiences of sexual offender therapists delivering a one-to-one programme with clients. Eleven therapists delivering an individual intervention with high-risk sexual offenders in English prisons took part in interviews and focus groups about the impact this work has had upon them. One participant also completed a diary charting their experiences while delivering the intervention. Content analysis identified that participants felt they experienced changes in how they viewed themselves, others and the therapeutic relationship, in both positive and negative ways. They also described experiencing intrusive thinking and feeling overly responsible for the outcome of treatment. However, positive effects were also identified. Findings suggest that the provision of structured supervisory support was particularly key in mitigating the impact of treatment delivery.     

Book Reviews

The Way the Modern World Works: World Hegemony to World Impasse. Peter J. Taylor, 1996. Chichester and London: John Wiley. 276 pp.; £18.99 paperback. ISBN 0 471 96586 3

Imagineering Atlanta: The Politics of Place in the City of Dreams. C. Rutheiser, 1996. London: Verso. 324 pp.; £14.00 paperback. ISBN 1 85984 800 1

Represénter la ville, coll.. A. Bailly, C. Baumont, J. Huriot and A. Sallez, 1995. Paris: Economica. 112 pp.; £7.00 paperback. ISBN 2 7178 2956 3

Continental Trading Blocs: The Growth of Regionalism in the World Economy. R. Gibb and W. Michalak (Eds), 1994. Chichester: John Wiley. 302 pp.; £45.00 hardback. ISBN: 4719 49 094

Mapping Desire. D. Bell and G C. Valentine (Eds), 1995. London: Routledge. 370 pp.; £15.99 paperback. ISBN 0 415 1164 1     

Characterization of the Products Formed by the Reaction of Trichlorocyanuric Acid with 2-Propanol

Abstract:  We report a recent investigation into the death of a cat that was initially thought to involve intentionally burning the animal via the use of an ignitable liquid. The exposure of the animal to flame was ruled out. Instead, forensic investigation revealed the intentional mixing together of a common outdoor swimming pool chlorinator, trichlorocyanuric acid (TCCA), and 2-propanol (aka, isopropyl alcohol or rubbing alcohol). The reaction of these two chemicals resulted in the formation of cyanuric acid residue, hydrochloric acid, and the evolution of a significant volume of chlorine gas. Further α-chlorination side reactions also occurred between 2-propanol and TCCA to produce a variety of chlorinated 2-propanone species that were detected on the submitted evidence. The identification of the products of both the main reaction and the side reactions allowed the authors to determine what chemicals were originally mixed together by the culprit.     

Coase and Bertrand on lighthouses

Coase (Journal of Low and Economics 17(2):185–213, 1974) failed to appreciate that the construction and maintenance of nineteenth-century lighthouses were in part financed by British taxpayers. Bertrand (Cambridge Journal of Economics 30:389–402, 2006) rightly calls him to account. While agreeing with Bertrand’s conclusion, we dispute her reasoning and argue that lighthouses nevertheless could have been supplied by the private sector.     

The rapid analysis of heroin drug seizures using micellar electrokinetic chromatography with short-end injection

A simple and rapid method for the analysis of heroin seizures by micellar electrokinetic chromatography with short-end injection is described. Separations were performed using an uncoated fused silica capillary, 50 cm x 50 microm I.D. x 360 microm O.D. with an effective separation length of 8 cm. The system was run at 25 degrees C with an applied negative voltage of -25 kilovolts. Injection of each sample was for 2 s at -50 mbar. UV detection was employed with the wavelength set at 210 nm. The background electrolyte consisted of 85:15 (water:acetonitrile, v/v) containing final concentrations of 25 mM SDS and 15 mM sodium borate, pH 9.5. Samples and standards were prepared in 0.1% v/v acetic acid and diluted in the run buffer containing 1 mg/ml of N,N-dimethyl-5-methoxytryptamine as an internal standard. Under these conditions a text mixture containing caffeine, paracetamol, morphine, codeine, heroin, and acetylcodeine was resolved within 1.5 min. The method was used to determine the concentration of heroin in heroin seizure samples, and the results were in good agreement with those obtained by a validated gas chromatographic method.     

Reviews

Raymond H. Garthoff, The Great Transition: American‐Soviet Relations and the End of the Cold War. Washington, DC: Brookings Books, 1994, 834 pp., $44.95 h/b, $19.95 p/b.

Nicholas Barr (ed.), Labor Markets and Social Policy in Central and Eastern Europe. New York: Oxford University Press/World Bank, 1994, xviii + 387 pp., $19.95 p/b.

E. A. Rees, Stalinism and Soviet Rail Transport, 1928–41. London and Basingstoke: Macmillan Press, 1995, xiii + 307 pp., £45.00.

William J. Tompson, Khrushchev: A Political Life. Macmillan in association with St Antony's College, Oxford, 1994, ix + 341 pp., £25.00.

David Holloway, Stalin and the Bomb: The Soviet Union and Atomic Energy 1939–1956. New Haven: Yale University Press, 1994, xvi + 464 pp., £19.95.

Joseph L. Wieczynski (ed.), Operation Barbarossa: The German Attack on the Soviet Union, June 22, 1941. Salt Lake City: Charles Schlacks, Jr. Publisher, 1993, v + 339 pp.

Keith Sword, Deportation and Exile: Poles in the Soviet Union, 1939–48. London and Basingstoke: Macmillan Press, 1994, xiii + 269 pp., £45.00.

Andrew Baruch Wachtel, An Obsession with History. Russian Writers Confront the Past. Stanford: Stanford University Press (available, outside North America, from Cambridge University Press), 1994, viii + 276 pp.

Beatrice Glatzer Rosenthal (ed.), Nietzsche and Soviet Culture: Ally and Adversary, Cambridge, Cambridge University Press, 1994, xvi + 421 pp.

Max Weber, The Russian Revolutions, trans, and ed. Gordon C. Wells & Peter Baehr, Cambridge, Polity, 1994, viii + 287 pp., £39.50.