Abstract: Dr. Hawley Crippen was accused and convicted of murdering his wife in London in 1910. Key to the conviction was microscopic analysis of remains found in the Crippen’s coal cellar, which were identified as Cora Crippen based on a scar she was said to have. Dr. Crippen was hanged, always proclaiming his innocence. In this study, genealogical research was used to locate maternal relatives of Cora Crippen, and their mitochondrial haplotypes were determined. Next, one of the pathology slides of the scar was obtained, DNA was isolated, and the haplotype was determined. That process was then repeated. Finally, both DNA isolates were assayed for repetitive elements on autosomes and repetitive elements specific to the Y chromosome. Based on the genealogical and mitochondrial DNA research, the tissue on the pathology slide used to convict Dr. Crippen was not that of Cora Crippen. Moreover, that tissue was male in origin. 相似文献
AbstractThis article gives an overview of the British Empire’s participation in the First World War. The roles of Australia, Canada, India, New Zealand and South Africa are well documented but there was also a significant contribution from and impact on the smaller and more peripheral territories. These are well covered in Sir Charles Lucas’s multi-volume series The Empire at War. Although very much of its time, written for and by an imperial elite and now neglected, it remains an invaluable record.相似文献
As was evident from the intense reaction to Donald Trump’s comments during the 2016 presidential campaign about nuclear proliferation, many analysts believe that the United States has consistently given the goal of nonproliferation a top priority since the beginning of the nuclear age. That conviction, in turn, plays a major role in policy debates among experts in this area. In this article, I show that nonproliferation does not necessarily take precedence over other important US geopolitical interests through a close examination of American policy toward the Israeli nuclear program during the 1960s. Although nonproliferation goals certainly came into play, US officials repeatedly gave priority to other key objectives and, to a real extent, even believed that Israel’s nuclearization could hold certain strategic advantages. This finding, of course, has important theoretical implications for the basic question of whether international politics still works essentially as it did in the pre-nuclear era, as well as for policy debates over nuclear proliferation. 相似文献
Having a sense of purpose is viewed as a benchmark of adaptive development. Though adolescence and emerging adulthood are viewed as central periods for the development of a purpose, work still is needed to understand the childhood factors that influence this developmental process. The current study provides an initial investigation into whether parent-child conflict during elementary school predicts later sense of purpose, assessed during emerging adulthood (mean age: 21.01 years; range: 19.97–23.53). The sample included 1074 students (50% female), and their parents, who both reported on their levels of parent-child conflict during grades 1–5. Higher levels of parent-child conflict were associated with lower levels of purpose in emerging adulthood. Moreover, the study examined whether these effects remained when predicting the variance unique to purpose while accounting for other indicators of well-being in emerging adulthood. Bi-factor models demonstrated that the child’s perception of mother-child conflict has a unique prospective effect on purpose in emerging adulthood, above and beyond its negative association with general well-being. The findings are discussed with respect to how positive parent-child relationships may prove important for starting youth on the path to purpose.
