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Chan‐Seong Park Ph.D. Seung‐Won Jeon M.E. Jung‐Eun Moon M.E. Kyu‐Jung Lee Ph.D. 《Journal of forensic sciences》2010,55(2):538-541
Abstract: An investigation is presented of the explosion of a CNG (compressed natural gas) fuel vessel, called a liner, in an urban bus. The explosion happened at a gas station 10 min after filling was completed. There were no traces of soot and flames at the failed liner, which would be indicative of explosion by ignition of the gas. The filling process of the station was automatically monitored and recorded in a computer. There was no unusual record of the filling system that indicated excess pressure at the time of the accident. There were cracks on the liner that were initiated at the outer surface of the cylindrical shell located at a point 4 cm above the lower dome where cracks did not originate easily as a result of overload. Chemical analysis was performed on a specimen that was cut from the liner, and there was no peculiarity in the mix. Mechanical analysis was performed on the specimens and showed that the hardness was not in the specified range because of inadequate heat treatment of the metal. The hardness of the liner was strictly controlled in the manufacturing process. All the liners that were manufactured at the same period with the failed liner were recalled for examination. 相似文献
154.
Using a unique data source of genealogies of upper-status families, called Bulcheonwye families, we assess how the extent of family succession through adoption changed over five centuries from 1450 to 1949 in Korea. Our analysis shows the continued increase in the share of adopted sons among total family successors up to the end of the 19th century when three out of ten family successors were adopted. The trend of the increasing role of adoption is closely related to the declining number of sons per family, suggesting that not only the rising influence of Confucian culture but also demographic changes increased the demand for adoption. Finally, our comparison provides evidence that the likelihood of achieving high social status was significantly higher among adopted sons than biological ones, suggesting that the socioeconomic potential of adopted sons could be an important factor for adoption decision. 相似文献
155.
This study explores how women’s functional limitations resulting from domestic violence lead to police involvement. Examining
functionality is a broader approach to exploring domestic violence outcomes than looking at injuries or impairments, and in
this study we look at the social participation aspects of social functioning. One hundred eleven battered women in four metropolitan
cities in the U.S. participated in anonymous telephone surveys. Approximately 80% of the battered women in the sample were
involved with the police due to their experiences of domestic violence. Women’s functionality was significantly associated
with battered women’s police involvement after controlling for socio-demographic and violence-related covariates. The current
study identifies one aspect of women’s functioning–social participation–as a critical predictor of their seeking of help from
the police, and suggests implications for practice, including the need for police and domestic violence agencies to have awareness
of the concept of functional limitations within a broader context of understanding disability. 相似文献
156.
Chan‐Seong Park Ph.D. Hong‐Pil Jeon M.S. Kwang‐Soo Choi M.S. Jin‐Pyo Kim Ph.D. Nam‐Kyu Park Ph.D. 《Journal of forensic sciences》2018,63(3):930-934
In the case of building collapses and overturned structures, a three‐dimensional (3D) collapse or overturn model is required to reconstruct the accident. As construction sites become increasingly complex and large, 3D laser scanning is sometimes the best tool to accurately document and store the site conditions. This case report presents one case of a structure collapse and one case of an overturned crane reconstructed by a 3D laser scanner. In the case of structural collapse of a prefabricated shoring system, a 3D model reconstructed all the members successfully, a task that is nearly impossible using a scale such as a tape measure. The reconstructed prefabricated shoring system was verified through a structural analysis through comparison with the construction drawings to investigate faults in construction. In the case of the overturned crane, the jib angle and other major dimensions were successfully acquired through 3D laser scanning and used to estimate the working radius. As a result, the propriety of the working radius with the given lifting load was successfully determined. 相似文献
157.
Validation of Reduced Reagent Volumes in the Implementation of the Quantifiler® Trio Quantification Kit
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Yoonjung Cho Ph.D. Hyo Sook Kim M.S. Min‐Hee Kim M.S. Moonhee Park M.S. Hansol Kwon M.S. Yang Han Lee Ph.D. Dong Sub Lee M.S. 《Journal of forensic sciences》2018,63(2):517-525
The Quantifiler® Trio Quantification Kit has been developed to quantify the total amount of amplifiable and human male DNA in samples and to estimate the extent of DNA degradation. To minimize the cost of DNA quantification, we evaluated kit performance using a reduced volume of reagents (1/10‐volume) using DNA samples of varying types and concentrations. Our results demonstrated concordance between the manufacturer's method and the low‐volume method for DNA quantification, DNA degradation index estimation, and human male DNA quantification. We confirmed the practical utility of the low‐volume method with 109 casework samples by evaluating short tandem repeat (STR) profiling success with respect to DNA quantity and quality. We also defined a cutoff value for DNA quantity to ensure reliable STR results. Using a reduced volume of reagents, 10 times more reactions per kit are possible; accordingly, this method reduces the cost of DNA quantification, while maintaining performance. 相似文献
158.
Collection of Wet‐Origin Footwear Impressions on Various Surfaces Using an Electrostatic Dust Print Lifter
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Electrostatic dust print lift method is known to be able to recover only dry‐origin footwear impression. However, the wet‐origin footwear impression could also be recovered using this method. As the amount of dust accumulated before deposition of the wet‐origin footwear impression increased, the intensity of the footwear impression lifted with this method became stronger. If the footwear impression is not affected by moisture after it is made, the 28‐h old wet‐origin footwear impression could be recovered using this method. The intensity of the lifted footwear impression did not decrease significantly even when the number of sequential steps increased as long as the shoe sole is wet. However, when the moisture on the shoe sole depleted, the intensity of the footwear impression decreased sharply. This method has the advantage of being able to enhance the footwear impression without being affected by the footwear impressions deposited in the past. 相似文献
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