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정신분열형 인격 성향이 정상인의 안면 표정 인식 능력에 미치는 영향
이현륭,김승연,추정숙,이경욱,채정호,박영민,김현,이강준,정영조,이승환,Yi, Hyeon-Lyung,Kim, Seung-Yeon,Choo, Jung-Suk,Lee, Kyoung-Uk,Chae, Jeong-Ho,Park, Young Min,Kim, Hyun,Lee, Kang Joon,Chung, Young-Cho,Lee, Seung-Hwan 대한생물정신의학회 2008 생물정신의학 Vol.15 No.4
Objectives : The purpose of this study is to investigate whether the ability of facial affect perception is associated with schizotypal personality traits in healthy normal controls. Methods : 241 normal subjects were recruited in this study. The age range of all subjects was from 19 to 63 years. The schizotypal personality questionnaire(SPQ) and facial affect identification test(FAIT), which were developed and standardized in Korea, were applied. Subjects from high 1 standard deviation(H group, N=40) and low 1 standard deviation(L group, N=26) on SPQ score were compared. Results : We found that the H group showed significantly reduced ability on the correctness of sadness and neutral compared with the L group. But, no significant association between SPQ and intensity or reaction point was observed in all subjects. Conclusion : This study suggests the individuals with high schizotypal personality trait have impairments on the facial affect identification. Also, these findings may provide the reasonable explanation of social cognition deficit of schizotypal personality disorder.
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Metabotropic Glutamate 수용체와 불안
박영민,이현륭,이승환,Park, Young-Min,Yi, Hyeon-Lyung,Lee, Seung-Hwan 대한불안의학회 2007 대한불안의학회지 Vol.3 No.1
Although treatments of anxiety symptom have been available for decades, the biological basis for anxiety disorders in humans is just beginning to emerge. Recently, there is a growing body of literature suggesting that group II metabotrpic glutamate (mGlu) receptors and group I mGlu receptors are important in the physiological and behavioral sequelae associated with stressful stimuli. Moreover, compounds selective for mGlu receptors, particularly mGlu2/3 and/or mGlu5, have proven as effective as classical anxiolytics in various animal models of anxiety without producing many of the unwanted side effects that are typical of current therapies. This article will focus on the emerging preclinical and clinical data that implicate modulation of the mGlu receptors as a potential anxiolytic strategy.
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윤형식,황성호,이현륭,김수호,박연석,권낙현,정호진,김동훈,노현주,홍성호,박병찬,이관,정해관 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1
일상생활에서 모발염색은 흔히 접할 수 있는 미용의 한 종류로 특히 젊은층을 중심으로 폭발적으로 유행하고 있다. 염색을 위항 사용하는 약제는 표백제와 발색제 등 각종 화학약품이 사용되고 있으나 이로 인한 건강장해에 대한 연구는 그리 많지 않다. 저자들은 염색이 인체의 모발건강에 미치는 영향을 파악하기 위하여 염색과 관련된 주관적 증상과 모발의 변화에 대한 실험적 연구를 시행하였다. 동국대학교 경주 캠퍼스 재학생 80명을 대상으로 설문조사를 시행하여 염색 유 ·무 및 염색 후에 경험한 증상에 대해 설문 조사하였고, 의과대학 재학생 46명을 대상으로 피부 반응 테스트를 실시하였다. 또한 염색 전후의 모발 탄성도를 측정하였고 모발의 상태를 파악하기 위해 전자 현미경검사를 실시하였다. 설문조사 결과 염색 전에 비하여 염색 후 안구혼탁, 안구건조, 시력저하, 발진 및 접촉성 피부염, 모발손상, 모근손상 등의 증상을 더 많이 경험한다고 호소하였다(p<0.05). 모발손상과 모근손상은 헤어드라이어 사용 빈도에 따라 증가하는 것으로 조사되었다(p<0.05). 피부반응검사에서 가려움증이 가장 많은 증상이었으며 이는 여성보다는 남성에서 높은 것으로 조사되었다. 염색 전후의 모발장력은 염색 전 134.5±10.37g, 염색 128.0±30.69g, 염색 이틀 후 112.5±19.69g으로 나타났다. 염색 전후의 모발의 전자현미경 케라틴 층이 현저히 감소하고 모발이 가늘어지는 차이를 보였다. 염색은 모발손상, 모발 케라틴 손상 및 모근 손상, 발진 및 접촉성 피부반응, 안구혼탁, 안구건조, 시력 저하를 유발한다. 따라서 염색약으로 인한 손상에 대한 주의와 예방이 필요하다고 생각한다. 예방대책으로 염색 전 피부테스트를 통한 적합성 여부를 판단하는 것이 필요하며 가급적 염색을 피하는 것이 좋을 것이다. 염색약에 발암물질이 포함되어있다는 보고도 있어 염색 제조사의 철저한 실험과 염색 물질의 선별이 염색으로 인한 부작용을 최소화하는데 중요한 역할을 할 것이다. Hair coloring has became one of the most popular cosmetic activities to younger generations during last decade. However, there are few studies on the health effect of widespread use of chemical dyes. This study was conducted to study the effects of hair coloring dye on hair and other systems. We conducted a questionnaire survey of 80 persons in Kyongju campus, Dongguk University. We have done open patch skin test on 46 medical students. We also conducted scanning electron microscopy to examine the hair strength and structure before and after hair coloring process. Injury of hair and hair bulb, contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity were the main symptoms complained after hair coloring (p<0.05). Injury of hair and hair bulb were increased by frequency of hair-dryer use(p<0.05). In open patch test, pruritus was complanined by more than half of the subjects. Mean strength of hairs before and after hair coloring was as follows; 134.5 (SD 10.37)g before hair coloring, 128.0 (SD 30.69)g immediately after hair coloring, and 112.5 (SD 19.69)g after two days. The scanning electron microscopic findings of hair surface before and after hair coloring showed decreased keratin layer and thinning of the hair. Hair coloring induces injury to hair, its keratin layer, and hair bulb as well as contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity. Therefore, we think that precaution is needed in use of hair coloring dye. To prevent complications induced by hair coloring dye, it is necessary, especially to those with allergy or skin disorders, to perform skin test before action and avoid hair coloring whenever possible. Longterm health effects of hairdye should be studied and manufacturing companies should try to minimize complications induced by hair coloring dye.
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김기상(Ki-sang Kim),김민규(Min-gyu Kim),이상용(Sang-yong Lee),이현륭(Hyun-ryung Lee),전충환(Chung-hwan Jeon) 한국에너지기후변화학회 2016 에너지기후변화학회지 Vol.11 No.1
The fuel characteristics, the combustion characteristics, and petrographic study of biomass samples that had been torrefied at 200~300 °C were investigated for wood pellets and empty fruit bunch (EFB). In the fuel characteristics, when higher torrefaction temperature was used, reduction of the yield, and increase in the calorie value, and decrease of volatile content were found. As a result, improvement of the fuel characteristics was confirmed. In the combustion characteristics, when the biomass was torrefied at 230 °C, each of the differential thermogravimetric analysis results was similar to the results that before torrefied. When comparing torrefied wood pellet with torrefied EFB at 230 °C, the torrefied EFB had higher combustion reactivity. This result was revealed to the petrographic result. Petrologically, wood pellet has thick wall structure, dense population, and few voids. On the other hand, EFB has thin wall structure, small size organic structure and many voids. Oxygen can more invade the biomass because of the thin wall structure and many voids. As a result, EFB had higher combustion reactivity.
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