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중독손상으로 퇴원한 환자에서 중독 양상 비교 - 전국 입원손상환자 조사사업 자료를 이용 -
정시영,어은경,김찬웅,박혜숙,김영택,Jung, Si-Young,Eo, Eun-Kyung,Kim, Chan-Woong,Park, Hye-Sook,Kim, Young-Tak 대한임상독성학회 2008 대한임상독성학회지 Vol.6 No.1
Purpose: There has been no nationwide surveillance survey of poisoning cases in Korea. This study examined the clinical characteristics of poisoning admissions in order to obtain preliminary data for future planning. Methods: This study retrospectively reviewed the data on poisoning admissions of 150 hospitals based on the hospital discharge injury surveillance data of Center for Disease Control and Prevention in Korea from January to December in 2004. The demographic data, poisons used, causes of poisoning, reasons for attempted suicide and mortality rate was investigated according to the age group. The factors associated with mortality were also evaluated. Results: A total 836 patients admitted for poisoning were analyzed. Their mean age was $46.5{\pm}19.5$ years (male 415, female 421). The most frequent age group was the 4th and 5th decades. The most common poisons involved were pesticides (45%) and medications (23%). The majority (64%) involved intentional poisoning except for those in the 1st decade. The most common reason for the attempted suicide was family problems. However, individual disease was the most common reason in those over 60 years. The overall mortality rate was 8.7% (73/836). Pesticides and being elderly (over 65 years old) were strongly correlated with fatality. Conclusion: The incidence of intentional poisoning increases from the 2nd decade making it a preventable injury. "Overall, the incidence of intentional poisoning increases from the 2nd decade". Therefore, there is a need to frame a prevention policy corresponding to each factor related to fatality, such as an elderly population and pesticides.
정시영,정진희,어은경,Jung, Si-Young,Jung, Jin-Hee,Eo, Eun-Kyung 대한임상독성학회 2007 대한임상독성학회지 Vol.5 No.2
Amitraz is a formamidine-derived insecticide and acaricide which is commonly used throughout the world. Amitraz intoxication is mediated through ${\alpha}_2$ adrenergic receptor agonist effects, similar to those of the ${\alpha}_2$ agonist clonidine. We report a case of a patient who experienced coma and hypotension after amitraz ingestion. A 37-year-old woman visited the ER with symptoms of vomiting and altered mental state. She had ingested a mouthful of liquid amitraz concentrate (12.5%), which rapidly led to vomiting, hypotension, bradycardia, hyperglycemia, and mental stupor. Supportive treatment, including mechanical ventilation and administration of inotropics, resulted in full recovery within four days.
증기 공동현상이 발생하는 무한 소폭 스퀴즈 필름 댐퍼 성능과 오일 공급압력의 영향
정시영(Si-Young Jung) 한국트라이볼로지학회 2008 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.24 No.3
The effect of oil supply pressure on the performance of vapor cavitated short squeeze film dampers is examined. Vapor cavitation is characterized by film rupture occurring as a result of evaporating oils. The pressure of vapor cavity in the film is almost zero in absolute pressure and nearly constant. Pan's model about the shape of vapor cavity is utilized for studying the effect of vapor cavitation on the damping capability of a short squeeze film damper. As the level of oil supply pressure is increasing, vapor cavitation is suppressed so that the direct damping coefficient increases and the cross coupled damping coefficient decreases. Futhermore, the analysis of the unbalance responses of a rigid rotor supported on cavitated squeeze film dampers shows that a significant reduction in rotor amplitude and force transmissibility is possible by controlling the oil supply pressure into short squeeze film dampers.
정시영(Si Young Jung) 한국트라이볼로지학회 2009 한국윤활학회지(윤활학회지) Vol.25 No.5
The limiting load capacity of air foil thrust bearings at extremely high operating speeds is theoretically investigated. The limiting load capacity of a sector is shown to increase as the angular extent β and the inlet film thickness h₁ of the bearing increase, while it decreases with an increase in the ramp ratio b and the compliance a of the bearing. But it is found that the angular extent of the bearing is not related to the total limiting load capacity of the 360° thrust bearing.
콘크리트의 표면성능개선이 내황산성에 미치는 영향에 관한 실험적 연구
정시영 ( Jung Si-young ),배준영 ( Bae Jun-young ),김재성 ( Kim Jae-sung ),김경덕 ( Kim Kyung-duk ),강석표 ( Kang Buk-pyo ),홍성윤 ( Hong Sung-yoon ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.1
Sulphuric attack is one of the serious deterioration factor with respect to the durability of concrete structure. Degradation of concrete in sewerage system is typical example. However the study on sulphuric attack influencing on corrosion of concrete is insignificant nevertheless its significant importance. The effect of surface treatment of concrete on sulphuric acid resistance has been examined experimentally. In this study, the relationship among several characteristics, such as resistance to sulphuric acid, water absorption and surface hardness of concrete has been investigated. It is believed that surface performance improvement by the application of penetrative hardening agent affects positively on sulphuric acid resistance and water absorption due to the formation of dense surface structure.
[제3분과/구조거동/재료] 콘크리트의 표면성능개선이 내황산성에 미치는 영향에 관한 실험적 연구
정시영(Jung Si-Young),배준영(Bae Jun-young),김재성(Kim Jae-Sung),김경덕(Kim Kyung-Duk),강석표(Kang Suk-Pyo),홍성윤(Hong Sung-Yoon) 한국구조물진단유지관리학회 2004 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Sulphuric attack is one of the serious deterioration factor with respect to the durability of concrete structure. Degradation of concrete in sewerage system is typical example. However the study on sulphuric attack influencing on corrosion of concrete is insignificant nevertheless its significant importance. The effect of surface treatment of concrete on sulphuric acid resistance has been examined experimentally. In this study, the relationship among several characteristics, such as resistance to sulphuric acid, water absorption and surface hardness of concrete has been investigated. It is believed that surface performance improvement by the application of penetrative hardening agent affects positively on sulphuric acid resistance and water absorption due to the formation of dense surface structure