성격장애 진단준거목록의 타당도 연구

황순택,정재홍,조연규,오동렬,김창현,양병환 漢陽大學校 精神健康硏究 1999 精神健康硏究 Vol.18 No.-

유리 성형용 금형의 균열 발생 기구

황규홍,송동환,양권승,이종국 조선대학교 생산기술연구소 2005 生産技術硏究 Vol.27 No.2

Microstructure of glass-forming mold have influence on the mechanical properties such as hardness, and life span of the glass-forming mold is strongly dependent on its microstructure. The glass-forming mold with guaranteed tool life requires fine particle size and homogeneous distribution of Cr precipitates in the matrix. In this study, mechanism on the crack creation of the glass-forming mold made in Korea (K-mold) was compared to the one glass-forming mold made in Japan (J-mold). SEM observation revealed that the particle size of the Cr precipitates in J-mold was smaller than that in K-mold, in addition the size distribution of J-mold was narrower than that of K-mold, resulting in long life of J-mold. Therefore, it was confirmed that the microstructure of the glass-forming mold related to Cr precipitates was one of the important parameters to improve the quality of products.

성격장애 진단준거 개발을 위한 전형성 분석

황순택,조연규,오동열,김창현,양병환 漢陽大學校 精神健康硏究 1994 精神健康硏究 Vol.13 No.-

유착성 견관절낭염의 치료에 대한 방사선학적 평가

윤동환,김희상,안경회,황치문 大韓再活醫學會 1999 Annals of Rehabilitation Medicine Vol.23 No.3

DSM-Ⅲ-R 성격장애 진단의 내용타당도

양병환,조연규,김창현,황순택,오동열 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.2

The purpose of this study was to examine the content validity of DSM-Ⅲ-R personality disorder(PDs). A 3-point rating scale of 150 preliminary diagnostic criteria including 95 DSM-Ⅲ-R PD diagnostic criteria was sent to psychiatrists. Each item in this scale was rated by psychiatrists(n=101) in term of prototypicality to every DSM-Ⅲ-R PD. The results show that each PD criteria set of DSM-Ⅲ-R was registered high level of interrater consistency and items listed in the DSM-Ⅲ-R were, for the most part, rated as very prototypical to their DSM-Ⅲ-R diagnosis. Some criteria were, however, not rated to characteristic features to their DSM-Ⅲ-R diagnosis. 11 items of DSM-Ⅲ-R diagnostic criteria scored high not only to their DSM-Ⅲ-R diagnosis but also other diagnosis. 16 items rated as high prototypicality item of other diagnosis. Another 16 items seemed not to be appropriate to any of DSM-Ⅲ-R PD diagnosis. These results suggest that the content validity of the DSM-Ⅲ-R personality disorder is not so high.

방전관용 전극개발 및 특성에 관한 연구

안성환,황동원,최준영,송시준,전용우,박원주,이광식 영남대학교 공업기술연구소 2001 工業技術硏究所論文集 Vol.29 No.1

This paper describes the development of sputtered tungsten electrode for discharge tube by making use of Sputtering method using plasma. The Xe discharge tube was designed and fabricated by using sputtered tungsten electrode, and the ICCD(Intensified Charged Coupled Device) and monochromator were used in order to observe the discharge image distribution and to measure the signal intensity. As a result, the emission light form the electrode was spreaded almost uniformly over a wide wavelength band, and the discharge image distribution and the signal intensity show quite a uniform distribution. The emission light from the Xe discharge tube was peaked at 488[nm] and 648[nm].

Metoclopramide가 휜쥐의 血壓에 미치는 影響

임동윤,최동준,김규형,최철희,박재윤,문재규,김문석,황두환 中央醫學社 1988 中央醫學 Vol.53 No.9

Influences of metocopramide (MCP), which is a seletive dopaminergic antagonist, on blood pressure of the rat and its mechanism of action were investigated in the present study. MCP administered into a femoral vein of the rat caused markedly a dose-related fall in blood pressure followed by secondary transient pressor response. The depressor action evoked by MCP was not blocked by pretreatment of atropine or chlorisondamine, while the pressor action was inhibited significantly. Prazosin treatment reduced markedly both of depressor and pressor induced by MCP. MCP-evoked pressor action was not affected by clonidine, but the depressor response was attenuated significantly. Debrisoquin treatment made the inhibited response to MCP-induced pressor response, while did not affect the depressor action. Both of pressor and depressor responses evoked by MCP were not influenced by cyproheptadine. The hypertensive activity induced by nor epinephrine was weakened markedly by the infusion of MCP (1.50 mg/kg/30min.), but the pressor action evoked by dopamine not affected. These experimental data suggest that MCP produces biphasic responses (depressor and pressor) in blood pressure of the rat, and that the hypotensive activity is due to adrenergic alpha-receptors blockade, and that pressor activity is exerted through stimulation of cholinergic nicotinic receptors in autonmic ganglia.

미기상규모 영역의 온실기체 승온효과에 관한 수치연구

이순환,서광수,김동희,황수진 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.3

The change of land use such as the construction of way in mountainous area and tunnel leads to the quantitative change of the greenhouse gas. This study tried to clarify the effect of the change of land use around Miryang Ice Valley on thermal environment of micro-meteorological scale by numerical experiment. We carried out several numerical experiment under different atmospheric conditions with different amount of greenhouse gases. Heating rate increased by the greenhouse gas in the ground level is average of 0.0073 K/day. And the increasing rate is smaller than the daily average heat crossing quantity.

방사선조사가 당뇨 백서의 치주조직에 미치는 영향

박동신,황의환,이상래 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.3

Purpose : To observe the histopathological changes in the periodontal tissues of mandibular molars in streptozotocin-induced diabetic rats after irradiation. Materials and Methods : The male Sprague-Dawley rats weighing approximately 250 gm were divided into four groups: control, diabetes, irradiation, and diabetes- irradiation groups. Diabetes mellitus was induced in the rats by injecting streptozotocin. Rats in the control and irradiation groups were injected with citrate buffer only. After 5 days, the head and neck region of the rats in irradiation and diabetes irradiation groups were irradiated with a single absorbed dose of 10 Gy. All the rats were sacrificed at 3, 7, 14, 21, and 28 days after irradiation. The specimen including the mandibular molars were sectioned and observed using a histopathological method. Results : In the diabetes group, osteoclastic activity was observed in the alveolar bone and the root throughout the period of experiment. Also, osteoblastic and fibroblastic activities were markedly decreased. In the irradiation group, the osteoclasts were observed in the alveolar bone and the dilated capillaries were increased in the early experimental phases. However, vigorous osteoblastic activity was noted in the late experimental phases. In the diabetes-irradiation group, osteoclastic activity in the alveolar bone and the root was observed in the early experimental phases. However, there were no resorption and osteoblastic activity in the alveolar bone and the root in the late experimental phases, and obvious atrophic change of fibrous tissues was noted. Conclusion : This experiment suggests that osteoblastic activity was caused by irradiation in the late experimental phases, but atrophic change of the periodontal ligament tissues was induced after irradiation in diabetic state.

표면도포제에 따른 수복용 글라스아이오노머 세멘트의 표면조도 비교

최병재,황동환 大韓小兒齒科學會 1996 大韓小兒齒科學會誌 Vol.23 No.4

The purpose of this paper is to investigate the surface roughness of glass ionomer cement during initial setting time followed by applying surface coating agent. No other finishing or polishing procedure is done and each surface coating agents (varnish, adhesive, gloss, sealant) are used after filling of glass ionomer cement. Surface roughness indices(Ra) are measured and surface contours are obtained electronically by Surfcorder SEF-30D(Ko-saka laboratory Ltd. Japan). The results are as follows: 1. During initial setting time, surface roughness increases slightly regardless of surface coating agents. But it is statistically insignificant. (p>0.05). 2. Among surface coating agents used, Ra indices of group using varnish are high significantly compared to other groups regardless of elapsed time.(p<0.05) Among the groups which has used other surface coating agents except for the varnish group, similar Ra index all over the experiment is obtained, when compared to control group (no agent). 3. If no surface treatment is performed, tri-cure glass ionomer cement (Vitremer) has higher Ra Index than light cure glass ionomer cement (Fuji Ⅱ LC) (t<0.05). But there is no difference between two groups in RA index if any kinds of agents are applied except for sealant. (t>0.05)