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71.
The spectroscopic identification of body fluids in situ is a major objective in forensic science. This approach offers the confirmatory, nondestructive, rapid, and on‐scene identification of various body fluids. Although Raman spectroscopy has shown tremendous promise toward this goal in prior proof‐of‐concept experiments, a significant challenge which still remains is substrate interference. Here, an approach for detecting semen stains in situ on various substrates using Raman spectroscopy is explored. Simulated semen evidence was prepared on skin, glass, and various fabrics. Raman data were accumulated from stains without any pretreatment using a common confocal mapping spectrometer using 785 nm laser excitation. The results demonstrate that the spectroscopic interferences encountered by substrates can be reduced and eliminated using a combination of existing subtraction techniques and chemometric models. Heterogeneous substrates proved most challenging, however, automatic subtraction treatment, and location of fluid hotspots was able to elucidate a clear spectroscopic signature of semen in every instance. 相似文献
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Geofferey Wood 《Economy and Society》2013,42(1):58-74
Hard Core is initially a historical study showing how the sexual explicitness of hardcore is located within cinema's initial promise of the visually real. The book is informed by a Foucauldian perspective on this 'will to truth; but also utilizes psychoanalytic and Marxist concepts of fetishsm and its discussion of the main hardcore films is through genre.Its aim is to show how a seemingly male-oriented discourse actually exhibits ambiguities and polymorphously perverse pleasures, therefore making it possible for women to gain some erotic purchase on pornography. However, there are a number of problems with this analysis; In its use of foucault, which promises a setting of pornography in more of a socio-political formation than is given: in the arguments on truth and fetishism, in the treatment of hardcore as a genre, which uses a restricted body of films to make a more general argument. A deeper attention to the institutional and social settings of varieties of pornography is therefore needed to give a more nuanced picture. 相似文献
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Gregory Melleuish 《澳大利亚政治与历史杂志》2012,58(1):112-122
This essay examines the model of state development put forward by Francis Fukuyama in his book, The Origins of Political Order. It argues that the evolutionary model used by Fukuyama experiences problems when it comes to dealing with specific historical examples. Its emphasis on the Qin state as the “first modern state” places an excessive emphasis on coercion and violence as the basis of the state. It attempts to relegate Rome to being equivalent to a chiefdom to fit it into his model whereas in reality Rome evolved differently to China and relied much more on cooperation and networks. England after 1688 provides another example of how Fukuyama's model is deficient. On this basis the paper argues that a universal evolutionary model is insufficient to explain political development and it is more appropriate to begin analysis with real political societies. 相似文献