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Wounds inflicted by high velocity, center-fire rifles firing hunting ammunition are radically different from wounds caused by handguns or .22 rim-fire rifles. Injuries from pistol or .22 rim-fire bullets are confined to tissue and organs directly in the wound track. In contrast, high velocity rifle bullets can injure structures without actually contacting them. This is due to the temporary cavity produced by such missiles with the resultant shock waves having pressures of up to 200 atmospheres (20 MPa). Organs struck by such high velocity rifle bullets may undergo partial or complete disintegration. Hunting ammunition, as it passes through the body, tends to shed fragments of lead from its core, producing a characteristic snowstorm picture on X-ray. The maximum range at which powder tattooing of the skin occurs from center-fire rifles depends on the physical form of smokeless powder used as propellant. In a test with a 30-30 rifle, cartridges loaded with ball powder produced powder tattooing out to a range of 30 in. (76 cm), while similar cartridges, loaded with the traditional cylindrical powder, produced tattooing out to only 12 in. (30 cm) of range. 相似文献
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Helen V. Tauchen Ann Dryden Witte Kurt J. Beron 《Journal of Quantitative Criminology》1993,9(2):177-202
In this paper, we analyze the tax compliance behavior of U.S. taxpayers by using a 1979 data set that combines information from a random sample of individual tax returns, each of which has been thoroughly audited, IRS administrative records, and sociodemographic data from the Census. We find evidence that both audits and tax code provisions affect compliance. However, the effects are significant for only low-and high-income groups. Interestingly, work on the underground economy also suggests that it is these two groups that are least compliant. Our results for audits suggest that the ripple or general deterrent effect of audits may be substantially larger than the direct revenue yield of audits for high-income taxpayers. Our results for allowable subtractions from income imply that the 1986 Tax Reform Act changes that lowered allowable subtractions may have procompliance effects. 相似文献
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