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대인간 폭력 희생자-가해자 관계에 따른 대인간 폭력 손상의 역학과 사망률 분석
주신용,송성욱,김우정,강영준,박현수,강경원,박창배,강정호,부지환,이성근,고서영 대한응급의학회 2019 大韓應急醫學會誌 Vol.30 No.2
Objective: The aim of this study was to investigate the interpersonal violence (IPV) epidemiology and mortality according to the violence victim-perpetrator relationships. Methods: A retrospective cross-sectional study was done using the comprehensive data of the emergency department (ED)-based Jeju Injury Surveillance System from all EDs in Jeju Island. The demographic characteristics of the victims, the types of perpetrators (spouse, family members, acquaintance, and stranger), injury characteristics and clinical outcomes from the injury were collected. The IPV epidemiology was reported by descriptive statistics. Multivariate Poisson regression was used to analyze the association between the mortality and violence victim-perpetrator relationships. Results: Among the 23,508 violent injury patients enrolled from January 1, 2008, and December 31 of 2016, 19,879 (84.6%) were analyzed; 16 (0.08%) died at the ED. The types of perpetrators were the spouse (10.1%), family members (3.9%), acquaintances (43.4%), and strangers (42.7%). The mortality of the violence victims was increased significantly by the spouse (incidence rate ratio [IRR], 6.336; P=0.043) or family members (IRR, 11.089; P=0.016) compared to strangers. On the other hand, there was no difference between the acquaintances and strangers. Conclusion: The epidemiology and mortality of IPV were associated with the violence victim-perpetrator relationships. Therefore, it is necessary to develop and apply prevention programs considering these differences, particularly for intimidate/ family violence because of its high fatality.
Si-FeSi2/C Nanocomposite Anode Materials Produced by Two-Stage High-Energy Mechanical Milling
양윤모,Chadrasekhar Loka,김동필,주신용,문성환,최이식,박정한,이기선 대한금속·재료학회 2017 METALS AND MATERIALS International Vol.23 No.3
High capacity retention Silicon-based nanocomposite anode materials have been extensively explored for use inlithium-ion rechargeable batteries. Here we report the preparation of Si-FeSi2/C nanocomposite through scalable atwo-stage high-energy mechanical milling process, in which nano-scale Si-FeSi2 powders are besieged by thecarbon (graphite/amorphous phase) layer; and investigation of their structure, morphology and electrochemicalperformance. Raman analysis revealed that the carbon layer structure comprised of graphitic and amorphous phaserather than a single amorphous phase. Anodes fabricated with the Si-FeSi2/C showed excellent electrochemicalbehavior such as a first discharge capacity of 1082 mAh g-1and a high capacity retention until the 30thcycle. Aremarkable coulombic efficiency of 99.5% was achieved within a few cycles. Differential capacity plots of the Si-FeSi2/C anodes revealed a stable lithium reaction with Si for lithiation/delithiation. The enhanced electrochemicalproperties of the Si-FeSi2/C nanocomposite are mainly attributed to the nano-size Si and stable solid electrolyteinterface formation and highly conductive path driven by the carbon layer.