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71.
Ethanol formation in unadulterated postmortem tissues 总被引:2,自引:0,他引:2
During the investigation of aviation accidents, postmortem samples obtained from fatal accident victims are submitted to the FAA's Civil Aerospace Medical Institute (CAMI) for toxicological analysis. During toxicological evaluations, ethanol analysis is performed on all cases. Many species of bacteria, yeast, and fungi have the ability to produce ethanol and other volatile organic compounds in postmortem specimens. The potential for postmortem ethanol formation complicates the interpretation of ethanol-positive results from accident victims. Therefore, the prevention of ethanol formation at all steps following specimen collection is a priority. Sodium fluoride is the most commonly used preservative for postmortem specimens. Several studies have been published detailing the effectiveness of sodium fluoride for the prevention of ethanol formation in blood and urine specimens; however, our laboratory receives blood or urine in approximately 70% of cases. Thus, we frequently rely on tissue specimens for ethanol analysis. The postmortem tissue specimens received by our laboratory have generally been subjected to severe trauma and may have been exposed to numerous microbial species capable of ethanol production. With this in mind, we designed an experiment utilizing unadulterated tissue specimens obtained from aviation accident victims to determine the effectiveness of sodium fluoride at various storage temperatures for the prevention of microbial ethanol formation. We found that without preservative, specimens stored at 4 degrees C for 96 h showed an increase in ethanol concentration ranging from 22 to 75 mg/hg (average 42 +/- 15 mg/hg). At 25 degrees C, these same specimens showed an increase ranging from 19 to 84 mg/hg (average 45 +/- 22 mg/hg). With the addition of 1.00% sodium fluoride, there was no significant increase in ethanol concentration at either temperature. 相似文献
72.
Missed Opportunities and New Risks: Penal Policy in England and Wales in the Past Twenty‐Five Years 下载免费PDF全文
This paper discusses trends in criminal justice and penal policy over the past twenty‐five years. This period has been characterised as a time of penal populism, which originated in the failure of the 1991 Criminal Justice Act, and the competition between the main political parties to be ‘tough on crime’. However, this is not the only trend to be found in penal policy. There has continued to be a strong undertow of support for rehabilitation and community penalties, including restorative justice. There has been pressure from the left as much as the right to take domestic violence, sexual offences against women and children, and hate crimes more seriously. There have been pressures to meet performance targets—which gradually transformed into calls to build the legitimacy of the justice system. Finally, there have been pressures to privatise criminal justice agencies. These various impulses have sometimes amplified and sometimes counteracted the pressures towards tough penal policy. If the period of intense penal populism ran from 1993 to 2007, inertia in the system has ensured that there have been no significant attempts to row back from tough policies, and to reassert the values of penal parsimony. Given that money has been tight since 2007 and crime has continued to fall, this must amount to a lost opportunity of significant proportions. 相似文献
73.
Mike Raco 《Public administration》2006,84(2):513-515
RETHINKING URBAN COMPETITIVENESS, COHESION AND GOVERNANCE Nick Buck, Ian Gordon, Alan Harding and Ivan Turok (eds) Palgrave Macmillan, 2005, 317 pp., £19.99 (pb) ISBN: 1403906807 相似文献
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Mike Felgenhauer 《Public Choice》2007,130(3-4):347-362
This paper analyzes deterrence in international conflicts. Assume a strong country has several opponents and faces a military capacity constraint, which is not exhausted after just one war. Two main effects are at work. If the strong country is constrained, then reputation is more expensive and may occur less often. The problem is that the opponents may (but need not) be more aggressive compared to a world without a constraint. It may be that an “axis of evil” does not exist before a war occurs, but is implicitly formed even by moderate countries after the first war was waged. A point of interest is whether the constrained strong country should obtain additional capacity, given that the objective is to minimize the number of wars. The analysis sheds some new light on the U.S. foreign policy, the United Nations and the “axis of evil” 相似文献
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托护(looked after)青少年是指父母无力监护、监护不力以及受到家庭虐待的青少年.这类由政府专门机构或寄养家庭收养的青少年,他们的心理健康问题复杂多样. 相似文献
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