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71.
The history of progress in any field of science is related directly to technical advances which have occurred during that period. The microscope contributed immensely to the advancement of forensic investigations in the late 19th century, with its use to study trace evidence including blood, semen, soil, paint, and biological material. The application of the discovery of x-radiation by Dr. R?entgen of Würzburg, Germany, in 1895 provided an important new tool for medical practitioners throughout the world. Its application was also realized as a potential weapon by medicolegal investigators. Discovery of the location of foreign objects, including bullets, thus became a clinical as well as a forensic technique in support of the investigation of living and deceased persons. The early application of x-ray methodology in England in 1896 by Prof. Arthur Schuster of Owens College, Manchester, in a case of a gunshot wound of a woman, is described as well as some aspects of the primitive technique which were used. 相似文献
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Interstate migration,income and public school expenditures: An update of an experiment 总被引:1,自引:0,他引:1
Garland R. Hadley 《Public Choice》1985,46(2):207-214
This article re-examines the relative importance of per capita income and net out-migration (Weisbrod's welfare-maximization hypothesis) as determinants of expenditures for public primary and secondary education. A repetition of Weisbrod's experiment shows that the existence of a high correlation between per capita income and migration in the 1950s would have made it difficult to distinguish between their relative importance. An update of the experiment yields results contrary to the hypothesis that communities (states) are welfare maximizers. They support the contention that per capita income is a primary determinate of educational expenditures. 相似文献
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Carmichael WW 《Journal of forensic sciences》2002,47(5):1046-1048
This case report illustrates the significance of the partially healed extraction site to the postmortem dental identification process. It presents the remains of two individuals with documented extractions--one, 6 1/2 months prior to death, the second, only three weeks prior to death. These photographs, compiled with others, can be used as a guideline for the forensic scientist who seldom has the opportunity to study skeletonized remains. 相似文献