족과관절염좌 환자에 대한 동씨침법과 일반침법의 효과에 대한 비교 연구

안호진,정동화,황규선,윤기붕,김태우,문장혁,백종엽,이상무,Ahn, Ho-jin,Jeong, Dong-hwa,Hwang, Kyu-seon,Yoon, Ki-bung,Kim, Tae-woo,Moon, Jang-huyk,Baek, Jong-yeob,Lee, Sang-moo 대한침구의학회 2003 대한침구의학회지 Vol.20 No.1

Objective: The purpose of this study is to compare the effects of Dong-si acupuncture therapy and General acupuncture therapy for the patients with acute ankle sprain. Methods : This study has been carried out for 60 cases of ankle sprain patients who have visited Dong-Seo Oriental medical Hospital from May 1, 2002 to September 30, 2002. We have treated 30 cases of them by Dong-si acupuncture therapy and the other 30 cases by General acupuncture therapy. And we have compared those two group. Results : 1. There was no significant difference at the treatment period and the number of treatment times in comparing two groups. 2. The number of treatment times for good effect is that : Dong-si took $1.57{\pm}0.85$ times and General acupuncture therapy took $2.15{\pm}0.96$ times. And we have found that the effect of Dong-si acupuncture therapy is faster than the other.

동기 MPSK 신호 심볼 오류 확률의 빠른 계산을 위한 간단한 근사식

윤동원,황선태 대전대학교 산업기술연구소 1998 산업기술연구소 論文集 Vol.9 No.2

The symbol error probability for the coherent detection of M-ary PSK signals in AWGN can be evaluated exactly for M = 2 (BPSK) and M = 4 (QPSK). The MPSK symbol error rate(SER) bounds used in the past are simple to calulate, but not particularly accurate. More recently, very tight bounds have been proposed, but they are not true bounds since they are based on an arbitrary truncation of an infinite series expansion. In this paper to obtain the simple and accurate lower bound for coherent MPSK SER in AWGN, we consider the SER for MPSK in Nakagami fading case first. Then as the Nakagami fading index m approaches to the infinite, we obtain the SER for MPSK in AWGN. Here, new lower bound that is simple and very tight is derived.

머리염색이 인체에 미치는 영향

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.

마이크로 사이즈 인출구경을 이용한 고휘도 이온빔 인출 시스템 개발

김윤재,박동희,정형설,황용석 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

In order to develop a high brightness ion source using plasma, the ion beam extraction system with an aperture of 100μm in diameter has been designed and constructed. It is observed that over 500nA of He ion beam current can be extracted. With such an optimized condition, ~10³ A/cm²sr beam brightness can be measured by emittance scanner, which is believed to be a promising result for developing next generation FIB.

본태성 고혈압이 동반된 당뇨병환자의 혈중 인슐린 농도

양동호,홍세용,성기범,안무영,윤신구,박형국,양광익,황주호,신현길 순천향의학연구소 1997 Journal of Soonchunhyang Medical Science Vol.3 No.1

Multiple lines of evidence link elevated blood pressure with diabetes mellitus. Specifically, it has been proposed that resistance to insulin-stimulated glucose uptake and hyperinsulinemia may play a central role in the cause and clinical course of hypertension. In diabetes mellitus, insulin resistance and/or hyperinsulinemia is an common finding and it is interesting whether the hyperinsulinemia may play a signigicant role in hypertension with DM in the same way as in essential hypertension without diabetes mellitus. The object of this study was to compare insulin and c-peptide levels between age, sex, and obesity matched two groups(DM with DM without hypertension). Method The study group consisted of 55 male diabetes mellitus patients, aged between 45-55 (years). Patients with obesity (body mass index · 30 ㎏/m2), renal disease (proteinuria · 300 ㎎/24hr urine), and secondary hypertension were excluded. Insulin and c-peptide were measured in overnight fasting state and after oral administration of glucose(75 gm). In the fasting, venous plasma glucose levels were similar in the hypertensive and control group(132 ±7 ㎎/dl vs 135 ±8 ㎎/dl). In the fasting, venous plasma insulin levels were higher in the hypertensive than in the control group (10.9 ±5.3 μIU/ml vs 5.5 ±3.9 μIU/ml, p = 0.0001). After loading with 75 gm glucose, venous plasma insulin level seems to be higher in the hypertensive patients than in the control patients, but the difference was not signigicant statistically (27.2 ±17.5 μIU/ml vs 19.9 ±18.9 μIU/ml, p = 0.1297). The mean insulin concentration of the essential hypertensive patients with diabetes mellitus was twice that of the normotensive patients with diabetes mellitus. In control group, there was a direct relations between insulin level and c-peptide, in both fasting state (R = 0.617, p = 0.0001) and glucose-loaded state (R = 0.531, p = 0.001). But in hypertensive group, there was no relations between insulin level and c-peptide, in both fasting state (R = 0.257, p = 0.2738) and glucose-loaded state (R = 0.307, p = 0.1885).

Butyl acetate-MEK 혼합용매를 이용한 초산분리에 관한 연구

장윤식,황승순,박동원 동아대학교 환경문제연구소 2000 硏究報告 Vol.23 No.1

We studied on the phase equilibria of quaternary liquid-liquid extraction system containing acetic acid-water-binary solvent at 25℃, MEK-butyl acetate were used as binary solvents. Binodal curve, tie-line, distribution and selectivity for each quaternary system have been determined in order to investigate the effect of using binary solvent in extracting acetic acid from aqueous solution. And these experimental tie-line data were also compared with the values predicted by WAC model. It was shown that UNIFAC model is capable of predicting the tie-line in these quaternary systems within an average RSDM of 3.76 mol%.

진자식 관절 시뮬레이터를 이용한 기능성 표면구조를 갖는 인공관절의 내마모성 향상에 관한 연구

김동욱,황규윤 순천향대학교 부설 산업기술연구소 2001 순천향 산업기술연구소논문집 Vol.7 No.2

For the purpose of reduction of polyethylene wear generated in artificial hip joints, concave dimples were formed on the surface of the metal femoral head by electrical discharge etching with the constant diameter of 0.5mm, pitch of 1.2 mm, and depth of 0.1mm. Using a hip joint simulator, the total amount of polyethylene wear was 15.4 mg in the concave-patterned condition and 34.2 mg in the nonpatterned condition. The reasons for the reduction of polyethylene wear by the concave pattern may be ⅰ) a reduction of abrasive wear by providing escape dimples for wear particles and ⅱ) an improvement in the lubricity on the frictional surface by the supply of lubricant that is store in dimples.

다중 임계 기법과 영역확장법을 이용한 뇌졸중 병변 정합 방법 연구

탁윤오,김태윤,황해길,김동억,최흥국 인제대학교 2009 仁濟論叢 Vol.24 No.1

In clinical studies of brain stroke, it generally involves the process that spatially normalizes MR images into the standard brain template in order to find out distributions of lesion. So far MNI305, which is people’s standard brain template, has been commonly used. However in this study, to reduce some morphological differences caused by human races, ages, and sexes, we used the Korean Statistical Probabilistic Anatomical Map(Korean-SPAM). As a preprocessing methods, brightness and position of a brain had been adjusted at the first Then, stroke lesions were segmented using multiple threshold and region growing methods. Finally, stroke lesions were registered to the Korean-SPAM using Mesh Warp algorithm. We can registered various stroke MR brain images to Korean-SPAM rightly by the proposed method.

경희대학교 수원 캠퍼스의 교문디자인 연구

김동찬,이윤수,박중구,황세현,김명기 경희대학교 디자인연구원 2000 예술· 디자인학연구 Vol.3 No.1

The Suwon Campus of Kyunghee University was decided to rebuild a university gate to make new image of the university for a new millenium. The purpose of this study is to design a university gate not only for a gate but also for a commemorative environmental model which presents a spirit and idea of the Kyunghee University. The entire design of the gate has a renaissance style, the design of it's center has a triumphal arch form which cars can go through, and the design of it's side has a corridor form which pedestrians can walk. The gate is designed to present the spirit for human and world peace which Kyunghee University intends.

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.