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Traditionally identification of forensically important insects has been carried out based upon morphological differences between species. However insect evidence found at a crime scene may on occasion be difficult to distinguish by morphological techniques and under these circumstances another method of accurate identification is required. This work utilises a cytochrome oxidase I partial mitochondrial gene region (COI) to distinguish the two of the main UK blowfly species -- Calliphora vicina (Robineau Desvoidy) and Calliphora vomitoria (Linnaeus) (Diptera:Calliphoridae). Seventeen interspecific differences in COI sequence were located. Use of the restriction enzyme SfcI on this gene region provides a simple method for distinguishing between C. vicina and C. vomitoria. 相似文献
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The author autopsied a seven-month-old infant who was shocked repeatedly with a stun gun by his foster mother, in an attempt by the foster mother to get the infant to stop crying. The stun gun injuries were round, well-circumscribed, erythematous macular lesions, which were found in pairs. The lesions were 2 in. apart, and were found to match the distance between the electrodes of the stun gun found in the foster mother's purse. Based on the electrical output of the stun gun, the small size of the infant, location of stun gun discharge, and the decreased resistance of the infant's skin, it can be concluded that the stun gun injury is responsible for the infant's death. 相似文献
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Mark Turner 《公共行政管理与发展》2002,22(4):353-364
Contemporary decentralization discourse and recommended practice focus on political decentralization. However, experience with such devolution has often failed to produce the anticipated developmental returns. This has prompted reconsideration of managerial or administrative decentralization (deconcentration) as a vehicle for improving services and encouraging popular participation. A range of potential benefits is available from deconcentration. Cambodia has embarked on a cautious policy of decentralization involving weak devolution and deconcentration. But it is from deconcentration that the government expects the greatest developmental gains. Initial results are encouraging but difficulties confront the deconcentration experiment. These include the piecemeal nature of the initiative, unfamiliar financial management practices, deeply embedded patterns of hierarchy in society and state, and limited managerial capacity. Nevertheless, it appears that incremental deconcentration may offer a useful policy alternative for countries such as Cambodia which are engaged in slowly building the infrastructure of a modern state following debilitating internal conflict. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献