• Archives of Plastic Surgery
• /
• v.34 no.1
• /
• pp.115-118
• /
• 2007

Purpose: It is even less common traumatic pseudoaneurysm of the superficial temporal artery and rare with fewer than 200 cases reported in the recent literature. Most common causes of traumatic pseudoaneurysm is sequelae of blunt, penetrating, or iatrogenic surgical trauma. The diagnosis is based on physical findings and can be confirmed by duplex ultrasonogram, computed tomography, and angiography. Surgical resection, percutaneous embolization and conservative treatment have all been used to treat pseudoaneurysm. However recently, non invasive technique like percutaneous thrombin injection under ultrasonographic guidance has been done rather than surgical ligation. In this report, we proposed the several treatment options such as conservative treatment, thrombin injection, and surgical ligation according to the multifarous conditions of pseudoaneurysm, patient, and causes. Methods: We describe two cases of traumatic pseudoaneurysm of superficial temporal artery in which CT angiography was effective in diagnosis and characterization. One is chronic pseudoaneurysm after traffic accident, which is fusiform shape and small size. Since the patient prefered it, we proposed percutaneous thrombin injection first. But we recognize that this method failed, we used surgical ligation according to information of CT angiographic findings. The other is acute pseudoaneurysm after blunt trauma, which is large size accompanying large hematoma. So we proposed compressive dressing and aspiration of hematoma. Results: Two cases were well treated with no recurrence or complication. Conclusion: In conclusion, when selecting a treatment options, followings should be considered: pseudoaneurysm in CT angiography, chronicity, cause, and patient's preference.

• Journal of the Korea Institute of Construction Safety
• /
• v.2 no.2
• /
• pp.50-55
• /
• 2019

Currently, safety management is becoming important at domestic construction sites. Despite the importance of safety management, accidents at construction sites are steadily increasing. Fire accidents among safety accidents cause not only negative effects on schedule delay or work plans at construction sites, but also huge casualties. Therefore, the purpose of this research is to extract the causes of fire at the construction site through the case of fire at the construction site, and to prioritize prevention through the analysis of the factors to contribute to the prevention of fire. As a research method, we select fire factors through case, conduct surveys through expert group, and analyze survey through AHP technique. The results of the AHP analysis of the survey of expert groups showed that the workers and their sub-item ranked high. Therefore, the priority for fire prevention was given, and this research is believed to help prevent fire.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.35 no.4
• /
• pp.969-975
• /
• 2015

In this paper, we review the regulations relating to railway safety and station workers interviewed, eight urban rail accidents decreased operating agencies through the prevention research currently being conducted into the (Seoul Metropolitan Rapid Transit Corporation City, Seoul Metro, Incheon traffic mortality, etc.) the root cause for the lack of aggressive prevention measures performed on the difficulties related regulations, organizational culture and work environment, prevention of negative operating authority derived in three improvements were obtained through this direction. First proposed urban railway safety ever buy Conduct production, utilization and operating agencies college safety assistant suggests directions for safety training, organizational culture and work environment improvements in senior management. Finally, active accident prevention campaigns, and provide direction to increase the educational participation of guests. Improvement for such accidents would decrease is thought to play a role in the prevention of future operating agency established when the guidelines.

• Journal of the Korea Convergence Society
• /
• v.5 no.1
• /
• pp.9-15
• /
• 2014

Traffic accidents are caused by a variety of factors. Among the factors that cause traffic accidents are weather conditions at the time. There is a difference in the percentage of deaths according to traffic accidents, due to the weather conditions. In order to reduce the number of deaths due to traffic accidents, to predict the incidence of traffic accidents that occur in response to weather conditions is required. In this paper, it propose a model to predict the incidence of traffic accidents caused by weather conditions. Predictive modeling was applied to the theory of Markov processes. By applying the actual data for the proposed model, to predict the incidence of traffic accidents, it was compared with the number of occurrences in practice. In this paper, it is to support the development of traffic accident policy with the change of weather.

• Journal of the Korean Society of Safety
• /
• v.29 no.6
• /
• pp.144-150
• /
• 2014

A man is a component of a large system how complex it may be so that human performance which can influence on the system safety should be included in system safety assessment. Meanwhile, human performance can vary over time due to lots of factors. Among them, stress is an indirect factor that may cause human error which can result in industrial accidents. To assess stress level of human workers, not a few assessment tools have been developed. However, it can be questionable to utilize them for human performance anticipation because they were mainly developed with the viewpoint of mental health, though stress assessment can be also required in the safety aspect. Therefore, this study aimed to survey the possibility of their application with safety purpose. About 10 kinds of work stress tools were collected and analyzed with reference to assessment items, assessment and analysis methods, and follow-up measures. The results showed that most tools focused their weights on Demands, Supports, and Relationships, in sequence. However, they, except only one tool developed by the Japanese researchers, merely advised to set up counterplans in PDCA cycle or risk management activities. In consequence, application of stress assessment tools mainly developed for mental health seemed impractical for safety purpose with respect to human performance anticipation so that it was concluded that development of a new assessment tools aimed to human performance variation and accident prevention would be inevitable.

• Journal of Chest Surgery
• /
• v.24 no.12
• /
• pp.1173-1184
• /
• 1991

This report is a review of 55 cases of peripheral arterial disease, who were treated at the department of thoracic and cardiovascular surgery, Masan Koryo General Hospital from January, 1986 to December, 1990. The result are summerized as follows ; 1. The incidence of peripheral arterial disease were as follows that : Arterial injury was in 21 cases(38.2%), arteriosclerosis oblitrans 18cases(32.7%), thromboembolism 9cases(16.4%), Buerger's disease was in 7cases(12.7%). 2. Overall male to female ratio was 6.8 : 1, the prevalent age was 3rd and 4th decade in arterial injury, 7th and 8th decade in atherosclerosis and thromboembolism and 5th and 6th decade in Buerger's disease. 3. The farmer was the first ranked occupation of these patients with chronic occlusive arterial disease, which was composed of 17 cases (68%). 4. 23 cases of patients with chronic occlusive disease has been smoking and most of them have been smoking over 10 years. 5. The clinical symptoms in acute and chronic arterial obstruction were pain, claudication, gangrene and coldness in order. 6. The duration of symptom of chronic arterial occlusive disease was less 1 years in 15 cases(60%). 7. The lower extremity were more affected than upper extremity in peripheral arterial disease. 8. The cause of arterial injury was traffic accident 9 cases(42.9%) stab wound 8 cases (38.1%), postangiography 2 cases(9.5%) and belt injury 1 case. 9. The etiologic factors of acute arterial occlusion was arterial fibrillation myocardial ischemia and postangiography in order. 10. Lumber sympathectomy in Buerger's disease, artificial bypass graft in atherosclerosis and thromboembolctomy in thromboembolism, end to end with vein graft in arterial injury were performed frequently. 11. Conclusively overall result was satis factory but 3 cases was below knee amputated after operation of chronic arterial occlusive disease.

• International Commerce and Information Review
• /
• v.15 no.4
• /
• pp.367-387
• /
• 2013

19) This research investigates the satisfaction level of both countries' export companies about the export insurance system which can cause problems in Korean-Chinese FTA in this age of spreading FTA. Through this research, it surveys of the system user satisfaction of two nations based on the characteristics of export insurance systems in South Korea and China. The satisfaction level of export credit insurance system is as follows: Awareness of credibility (3.53), awareness of exporting area (3.38), awareness of risk management (3.29), awareness of market change (3.14), awareness of insured accident (3.24), and awareness of regulations (3.03) present positive responses to the export insurance system but awareness of defective product (2.97) was relatively unsatisfied. Though it is hard to compare directly due to the differences between the exporting systems of Korean and China, this research shows the need of various export insurance products, and that most export companies in Korea and China are generally satisfying with export insurance products at present.

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.34 no.11
• /
• pp.1727-1732
• /
• 2010

Forensic engineering is the area of expertise of people qualified to serve as engineering experts in courts of law or during arbitration proceedings. An aerial-lifter can lift and carry load, including people, using power. Recently, failure of aerial-lifter internal parts while working and sweeping causing injuries and damage to property almost always generates conflict between the automaker and customer. Hence, the investigation of such events generally involves an engineering analysis. One of the possible reasons for accidents, such as a vehicle catching fire is the failure of oil pressure machine and the supporting pin. The results of formal inspections and engineering tests can reveal the cause for the failure of the mechanical parts. Therefore, the failure mechanism is analyzed by adopting fractography methods and by applying an instrumented indentation technique to compare the material properties of the reference part with those of the malfunctioning part.

• Journal of Korean Society of Disaster and Security
• /
• v.10 no.2
• /
• pp.29-34
• /
• 2017

LPG is a substance that requires a lot of attention because it can cause fatal damage to people and environment when an accident occurs. LPG is frequently accidents in transportation facilities as well as fixed facilities, among which LPG tank lorries are the most frequent accidents. When the LPG tank is evacuated, the LP gas leaks into two phases, leaks mostly to the gas and leaks to some liquid. At this time, the leaked gas will also sink downward because it is heavier than air, and if it continues to leak, it may form an explosion and explode by the ignition source. The purpose of this study is to present the evacuation distance by analyzing the effect distance of the LPG liquefied petroleum gas in the event of explosion. As a result of calculation of the scattering radius of the fragment, the cylinder fragment was scattered up to 561 m. Therefore, it is appropriate to set the distance to be escaped when the LPG tanker leaks to 561m or more.

• Journal of the Korean Institute of Gas
• /
• v.25 no.4
• /
• pp.1-9
• /
• 2021

The process and facilities of modern chemical plants are becoming increasingly complex, there is possibility of potential risk. Internal chemicals generate stress concentration when operated due to turbulence, laminar flow, pressure, temperature, friction, etc. It causes cumulative fatigue damage, which can damage or rupture chemical facilities and devices. The statistics of chemical accidents found that the highest rate of occurrence was in summer, and in the last five years statistics on chemical accidents, leakage incidents make up a decent percentage of accidents. Chemical leaks can cause serious human damage and economic damage, including explosions and environmental pollution. In this study, based on the leak accident of chemical plant, the risk analysis, and damage effects assessment were estimated using a 3D scanner and FLACS. As a result, if chemicals leak in summer, the risk is higher than in other seasons, the seasonal safety management measures, and countermeasure were estimated.