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TCD를 이용한 정상군과 중풍원인질환군의 혈류측정에 관한 비교연구
허정은,권정남,신원탁,김종득,이상희,손연희,김영균,Heo, Jeong-Eun,Kwon, Jung-Nam,Shin, Won-Tak,Kim, Jong-Deuk,Lee, Sang-Hee,Son, Yeoun-Hui,Kim, Young-Kyun 대한한방내과학회 2007 大韓韓方內科學會誌 Vol.28 No.2
Objectives : The purpose of this study was to evaluate the blood flow using doppler ultrasound of the MCA, ACA, PCA, BA, ICA in the patients with risk factor for stroke. Methods : 110 patients with risk factor for stroke were selected who had hypertension, diabetes mellitus, hyperlipidemia, or heart disease, as well as 89 healthy adults who did not have any symptoms of those diseases. To evaluate the blood flow, the Vs and Vm of the MCA, ACA, PCA, BA, and ICA in the two groups were measured. Result : In normal healthy adults, subjects showed a decrease in the Vs and Vm: with advancing in age, there was a significant difference in the Vs of MCA, PCA, BA, and ICA. There was a significant difference in the Vm of MCA, PCA, BA, and ICA. In normal healthy adults, females showed high velocities in all examined vessels. There was a significant difference in the Vs of BA. There was a significant difference in the Vm of BA, and ICA. There was a decrease in the Vs, and Vm of all examined vessels of patients with risk factors for stroke in comparison with normal healthy adults. There was no significant difference in the Vs. There was a significant difference in the Vm of MCA, ACA, and PCA. Results were the same between patients aged under 50 and total patients in the Vs and Vm of examined vessels. There were differences between patients aged over 50 and total patients in the Vs of MCA, PCA, BA and for patients aged over 50; patients with risk factor for stroke who had hypertension, diabetes mellitus, hyperlipidemia, or heat disease has higher Vs than healthy adults. Conclusions : There was a significant difference in the blood flow velocity between patients with risk factors for stroke and healthy adults. However, this result was different from results of comparison of TCD findings between patients and healthy individuals by age. Therefore, more detailed studies about aged patients are needed.
Electron-beam Evaporation의 증착 방법에 따른 MgO Layer의 표면 특성에 관한 연구
허정은,이돈규,조성용,이해준,이호준,박정후,Heo, Jeong-Eun,Lee, Don-Kyu,Cho, Sung-Yong,Lee, Hae-June,Lee, Ho-Jun,Park, Chung-Hoo 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.5
A MgO layer is used as electrode protective film in the alternating current plasma display panel (AC PDP). The properties of MgO layer are thought to be one of the most important factors that affects the panel reliability through the firing voltage variation. In this study, we investigated the relations between the surface characteristics and e-beam evaporation process parameters such as deposition rate, temperature of substrate and distance between the MgO pellet and substrate. To produce the MgO layer of (200) crystal orientation, we suggest the high temperature of the substrate, the long distance between the pellet and substrate and the high deposition rate.
흉터복원술과 자동 미세침(Auto Microneedle Therapy System, AMTS)을 이용한 여드름 흉터의 치험례
허정은,윤정민,신상호,Heo, Jeong-Eun,Yun, Jeong-Min,Shin, Sang-Ho 대한한방안이비인후피부과학회 2013 한방안이비인후피부과학회지 Vol.26 No.4
Objective : Acne is very common disease, it can leave permanent scars. However, there are few reports about it in oriental medicine academia. This study performed to evaluate the effect of reconstruction of skin scars and auto microneedle therapy system on acne scars. Methods : Six patients were treated by using reconstruction of skin scars and auto microneedle therapy system. We compared the degree of treatment of acne scars on pre and post case photos and Qualitative Global Acne Scarring Grading System(QGASC). Satisfaction degree were asked from the patients. Results & Conclusion : After comparing case photos and QGASC, observing patients satisfaction, it can be considered that reconstruction of skin scars and auto microneedle therapy system to be valid acne scars treatment.
TCD를 이용한 고혈압환자군과 정상혈압군의 뇌혈류측정에 관한 비교연구
허정은,김영균,권정남,김경민,김봉현,김민규,김재규,박선미,Heo, Jeong-Eun,Kim, Young-Kyun,Kwon, Jung-Nam,Kim, Kyoung-Min,Kim, Bong-Hyun,Kim, Min-Kyu,Kim, Jae-Kyu,Park, Sun-Mi 대한한방내과학회 2008 大韓韓方內科學會誌 Vol.29 No.4
Objectives : The purpose of this study was to compare cerebral biood flow between hypertensives and normotensives using transcranial doppler ultrasonography (TCD). Methods : I investigated cerebral blood flow of 72 hypertensives and 127 normotensives. To evaluate the cerebral blood flow, I measured the systolic peak velocity(Vs) and mean How velocity (Vm) of the middle cerebral artery(MCA), anterior cerebral artery(ACA), posterior cerebral artery(PCA), basilar artery(BA), and internal carotid artery(ICA) in the two groups using TCD. Result : 1. There was a decrease in the Vs and Vm of all examined vessels of hypertensives in comparison with normotensives. There was a significant difference in the Vs of ACA and Vm of ACA, PCA, ICA. 2. In males, there was a decrease in the Vs of ACA, PCA, ICA and Vm of MCA, ACA, PCA, ICA of hypertensives in comparison with normotensives. However, there was no significant difference in the Vs or Vm of all examined vessels. 3. In females, there was a decrease in the Vs and Vm of all examined vessels of hypertensives in comparison with normotensives. There was a significant difference in the Vs of MCA, ACA and BA and Vm of ACA, PCA and BA. 4. In 30-49 year-olds, there was a decrease in the Vs and Vm of all examined vessels of hypertensives in comparison with normotensives. There was a significant difference in the Vs of ACA and Vm of ACA. 5. In 50-69 year-olds, there was a decrease in the Vs of ACA, PCA, BA, ICA and Vm of all examined vessels of hypertensives in comparison with normotensives. However, there was no significant difference in the Vs or Vm of all examined vessels. 6. In 70-89 vests old. there was a decrease in the Vs. Vm of PCA, BA, ICA of hypertensives in comparison with normotensives. But, there was no significant difference in the Vs, Vm of all examined vessels. Conclusions : There was a significant difference in the cerebral blood now velocity between hypertensives and normotcnsives. These results suggest that blood pressure has influence on cerebral blood flow.
도시 중심상업지역의 건축물 용도별 화재피해특성 기반의 화재위험도 평가에 관한 연구
허정은(Heo Jeong-Eun),전규엽(Jeon Gyu-Yeob),홍원화(Hong Won-Hwa) 대한건축학회 2009 대한건축학회논문집 Vol.25 No.3
Currently, the population of the city in Korea is overpopulated resulting from urbanization. The population of the Seoul and metropolitan area which have economic, service and cultural facilities is more than 40% of Korean population. The more number of population are increased, the more risk of fire incidence and fire damage are increased. According to the building types in using, the features of the damages, casualty and loss of property, caused by fire are different. We gathered and studied data regarding fire incidents in commercial areas because different buildings are located there. Based from these data, we classified the degree of damages according to the purpose of the building. Therefore, this study is conducted to reduce fire damages by anticipating such incident and to be prepared for unforeseen situations.
토마토 과실의 호흡 및 에틸렌 생성에 대한 1-Methylcyclopropene의 진공 침투 처리 효과
허정은(Jeong-Eun Heo),최성진(Seong-Jin Choi) 한국원예학회 2006 원예과학기술지 Vol.24 No.4
A standard method to treat fruits with 1-methylcyclopropene (1-MCP) is to close the fruits for a relatively long time with the 1-MCP gas at the atmospheric pressure so that the gas diffuses into the fruits. In this study, 1-MCP gas was vacuum-infiltrated into the tomato fruits within a short time and the treatment efficiency was evaluated by measuring the changes of respiration and ethylene production rates. By the forced infiltration of 1-MCP, respiration rate was reduced proportional to the treated 1-MCP concentrations and inversely proportional to the applied vacuum pressures. But the 1-MCP treatment increased ethylene production, especially under the vacuum pressure of 60 mbar. At 120 mbar vacuum pressure the 1-MCP was efficiently infiltrated into the fruits. However an increase in concentration of 1-MCP was required to acquire the same level of effect as standard treatment method, presumably because of the increased ethylene production.
김재규,허정은,손연희,정현윤,신철경,민성순,권정남,김영균,Kim, Jae-Kyu,Heo, Jeong-Eun,Son, Yeon-Hui,Jeong, Hyun-Yun,Sin, Cheol-Kyung,Min, Sung-Soon,Kwon, Jung-Nam,Kim, Young-Kyun 대한약침학회 2008 Journal of pharmacopuncture Vol.11 No.4
Objectives The aim of study was to evaluate the effect of Herbal medicine on post stroke cognitive deficit. Methods All groups were treated with acupunture treatment, moxa treatment, herbal medicines, physical and occupational therapy for 4 weeks, additionally cardiotonic pills(CP) were taken in the cardiotonic pills group. The effect of treatment was assessed using Verval fluency, MMSE-KC, Word List Immediate Recall test. Statistical significance was achived if the probability was less than 5%(p,0.05). Results Verval fluency, MMSE-KC, Word List Immediate Recall test scores increased in both group. MMSE-KC, Word List Immediate Recall test scores were significantly increased in the CP group. Verval fluency, MMSE-KC, Word List Immediate Recall test scores were significantly increased in the control group. In the Verval fluency, MMSE-KC, Word List Immediate Recall test of the CP group more increased compared to the control group. There were no significant differences between two groups. In the CP group, the scores of the infarction group more increased compared to the hemorrhage group. Conclusions According to the these results, herbal medicines are effective to improve post stroke cognitive-deficit. Futher studies are needed to know cardiotonic pills in the ischemic stroke.