이개 피부 연골 이식술의 다양한 이용도

박원진,이윤호,김병건 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.3

In the case of congenital deformity or acquired complex tissue defect at various head & neck area, grafts, flap, tissue-expander & vascularized composite graft were used for correction of defects & deformities. Among them, when the large defects, flaps & tissue expander were used. When the small defects, skin grafts & composite graft were used. However when reconstruction of minor defects or deformities of eyelid, ear, nose and palate, which is not able to reconstruction with simple grafts, and requires skeletal supports, we have used auricular chondrocutaneous graft. Auricular chondrocutaneous grafts were classified into three type. Type 1 is skin-cartilage balanced form. Type 2 is cartilage excess form, Type 3 is skin excess form. We have used each type in each case. Author successfully treated 10 patients by free chondrocutaneous grafts. Of these. 1)patients who have defects or deformities of nose 2)patients who have defects of deformities of ear 3)patients who have defects of palate 4)patients who have deformities of eyesocket We corrected minor deformities or defects of head & neck area with auricular chondrocutaneous graft and auricular chondrocutaneous grafts provide an excellent & simple method for repair of minor defects & deformities at head & neck area. Thus we represent our methods & cases with review of literature.

전기로 더스트의 환경안정적 재활용을 위한 CI 제거에 관한 실험 고찰

박병현,조영민,유정근 경희대학교 환경연구소 2001 環境硏究 論文集 Vol.10 No.-

Steel slag is a kind of industrial waste generating from the steel refining process in an Electric Arc Furnace. The annual production of this waste is more than 200.000 tonnes, and has recently been considered handful. Thus, in order to enhance the reuse of the steel slag, the present work attempted to reduce the chlorine element in the slag by using chemical treatment. Chlorine elements were cleansed by addition of a few solvents such as acetone, methanol and ethanol through dilution with water. Mohr titration was applied to measure the chlorine concentration in terms of reaction time, dilution ratio and temperature. As a result, methyl alcohol was found the most effective at high reaction temperature with a lengthened reaction.

중증 근무력증 52례에 대한 임상적 고찰

박건주,하정상,이준,도현철,박승권,서상덕,기병수,김진국 영남대학교 의과대학 1996 Yeungnam University Journal of Medicine Vol.13 No.1

1985년 8월부터 1996년 1월까지 중증근무력증으로 진단받은 환자 52례에 대한 임상적 고찰을 통하여 다음과 같은 결론을 얻었다. 1. 전체 환자 중 남자가 19례(35.8%), 여자가 33례(64.2%)이넜고 11세에서 20세 사이가 12례(23%)로 가장 높은 빈도를 보였다. 2. 환자의 초기증상으로는 안검하수, 복시 등의 안구증상이 37례(71.2%)로 가장 많았고 modified Osserman의 분류에 따라서도 가장 증상이 가볍고 약물치료에 잘 반응하는 1군이 36례(69.3%)로 가장 많았다. 3. 환자가 호소하는 증상의 비특이성과 회복과 재발을 거듭하는 질병의 특성으로 인해 발병이후 진단될 때까지의 시간은 비교적 오래 걸렸고 1년이상 경과하며 진단된 경우도 16례(30.8%)나 되었다. 4. 자가면역질환이 7.6%에서 동반되었는데 갑상선기능 항진증이 2례(3.8), 인슐린의존형 당뇨 2례(3.8%)였고 종격동 전산화 단층촬영소견에서 흉선의 비대가 의심되었던 환자는 6례(11.5%), 흉선종이 발견 되었던 경우는 3례였다. 5. 환자의 치료는 대부분 항콜린에스테라제나 부신피질호르몬을 병용하는 내과적 치료를 하였으며 약물의 치료에 반응이 미비하거나 악화되는 경우 혹은 종격동 전산화 단층촬영상에서 흉선의 이상 소견이 보인 경우에 2례(3.9%)에서는 흉선절제술이, 1례(1.9%)에서는 혈장여과요법이 추가 되었고 흉선절제술과 혈장여과요법이 같이 병합 치료된 경우도 3례(5.9%)있었다. 6. 전체 환자중 2명에서 자연치유의 경과를 보였으며 이들은 모두 1군이였다. 그리고 흉선절제술과 부신피질 호르몬 투여로 완치된 예가 1례있었다. The authors experienced 52 patients with myasthenia gravis who were diagnosed at the Department of Neurology, Yeungnam University Hospital from August 1985 to January 1996. The following results were obtained through diagnostic evaluation and treatment. 1. The ratio of male to female was 1:1.7 and the most prevalent age group was second decade. 2. The most common initial presentation symptom was ocular(71.2%) and the peak incidence group was stage I(69.3%) according to the modified Osserman's classification. 3. In 16 patients(30.8%), it took more than a year to diagnose due to symptoms which were relapsed and remitting. 4. Of 52 patients, 2 cases were associated with thyroid disease(3.8%) and 2 with insulin-dependent diabetes mellitus(3.8%). 5. All of those who received anticholinesterase and corticosteroid therapy were improved with the exception of 5 cases which were improved after thymectomy and/or plasmapheresis. 6. Spontaneous remission was occured in 2 cases(3.8%) of ocular myasthenia gravis. And 1 case of group II was cured through thymectomy and long-term corticosteroid therapy.

레크리에이션 활동이 정신지체아의 사회적 기술과 문제행동에 미치는 효과

강병일,추근도,최경훈,박기용,박병규 한국특수체육학회 2004 한국특수체육학회지 Vol.12 No.3

The purpose of this study was to identify the effect of recreation program applied to the mentally retarded children on their social skill and problem behavior. The subjects of the study were the mentally retarded children who were attending at J middle school for special education in Andong-city, Kyungpook Province and the children were divided into two groups; experimental and comparative groups. Research design was as follows; the input of recreation activities was designated as independent variables, male and female mentally retarded children group was determined as object variables, and social skill and problem behavior was subject variables. After the pre-tests on the scales of the sampling children's social skill and problem behavior were carried out, experimental group was applied to the recreation program and comparative group was taught as a usual time and then the post-tests was performed. t Examination was used to identify the differences according to the results from post-tests and the data were processed by SPSS 10.0(Statistical Package for the Science) statistics program. The results from the above research were as follows; First, the mentally retarded children applied to the recreation program had a positive effect on their social skill. Second, the application of the program also had a positive effect on their problem behavior. From the results of this study, my suggestions were First, the follow-up research should be provided to identify the effect of recreation program on the children being various levels. Second, the range of research should be expanded, so the consistent research on children of kindergarten or after-elementary school should be followed. Third, the succeeding research on the long-term transfer of the program's effect should be continued. Forth, other programs(or strategies) could attribute to the promotion of the mentally children's social skill and the improvement of their problem behavior. Fifth, the research capable of inducing their activities after understanding the students' traits, interest degree on the subjects and so on should be made. Finally, each agencies or schools should develop and apply more systematic recreation program and also try to develop a system which could be classified and applied to recreation fields suitable for the individuals' traits.

안료-수지-용제간의 상호작용이 TiO_2 안료의 분산에 미치는 영향

이근대,홍성수,박진환,안병현 釜慶大學校 2000 釜慶大學校 論文集 Vol.5 No.-

The effect of pigment-resin-solvent interaction on dispersion of pigment has been studied. The solubility parameter of TiO_2 pigment, determined in terms of suspension behavior of pigment in various solvents, was 10.27 (cal/cc)^1/2(δ_d = 8.23, δ_p = 3.45, δ_h = 5.10). The solubility parameter of Acryloid B-44, determined using rheological parameters of resin solution in different solvent, was 9.4 (cal/cc)^1/2. The solvent showing weaker interaction with pigment increased the adsorption of resin on to the pigment, resulting in higher dispersibility and higher storage stability of dispersion.

두가지 동기방식을 이용한 카오스 주파수천이 변조회로의 설계

安秉根,朴廣炫 충주대학교 1997 한국교통대학교 논문집 Vol.32 No.2

For the purpose of the secure communication, a study of the modulation circuit of chaotic frequency shift keying is presented. In this paper, the modulation citcuit of chaotic frequency shift keying was designed with two synchronization methods-the coupled and the drive synchronization. The designed circuit was simulated for the cases of no-load, 1K-load,3.6K-load and load of opeational anplifier respcetively. As a result of simulation,two chua's circuits which genitate two chaos signals,using coupled synchronization method is not affected from the output stage by using the operational amplifier for drive synchronization.

KSDeN^TM process의 영양염류 제거 특성

김도군,천상욱,김병군,서인석,박철휘,김성준,류수현 대한상하수도학회 2002 상하수도학회지 Vol.16 No.4

Intermittent aeration processes have been much of interest as an excellent alternative for nutrients removal for upgrading secondary wastewater treatment plants, with minimum modification. Also, operational flexibility of those proposes a good opportunity for newly planed plants. Here, a pilot study was conducted to evaluate the performance of a continuous flow intermittent aeration process (KSDeN^TM process). The influent was collected at the effluent channel of the grit chamber of a large sewage treatment plant. The influent characteristics with standard deviation were 243.2±170.9mg/L for TCOD_cr, 47.5 13.9mg/L for T-N, 8.4±8.3mg/L for T-P and 5.2±1.8 for C/N ratio. Effluent of 1^st sedimentation tank was 208.2±87.6mg/L for TCOD_cr, 35.0±10.3mg/L for T-N, 4.8±1.9mg/L for T-P and 6.1±2.3 for C/N ratio. The average removal efficiencies of TCOD_cr, T-N and T-P were 93.6, 77.0 and 86.4% and effluent TCOD_cr, T-N and T-P concentrations were 12.5, 9.2 and 0.7mg/L respectively, satisfying regulatory limits. Alkalinity deficiency was not observed during the oxic periods, which is one of the special features of an intermittent aeration process. The results showed higher COD, T-N and T-P removal efficiencies and stability with varying influent conditions, compared to other conventional fixed phase nutrients removal processes.

급성하벽심근경색에서 전흉부유도 ST절 하강의 의의

정병천,배호상,곽동훈,김영태,배용학,황종현,임현주,류재근,조용근,채성철,전재은,박의현 慶北大學校 醫科大學 1997 慶北醫大誌 Vol.38 No.2

목적 : 급성하벽심근경색증 환자에서 심전도상 흔히 동반되는 전흉부유도 ST절 하강의 의의를 알아보았다. 방법 : 심근경색후 24시간에서 48시간에 얻은 심전도를 기준으로 52명의 급성하벽심근경색증 환자를 전흉부유도에서 ST절의 하강이 있는 군과 없는 군으로 나누었으며 심도자, 관상동맥조영술, 심초음파도 및 방사성 핵종을 이용한 좌심구혈율 측정 등을 시행하였다. 결과 : 1) 좌심실확장기말압은 전흉부유도에서 ST절의 하강이 있는 경우에서 16.9±5.33mmHg로 없는 경우의 11.0±4.02mmHg보다 유의하게 높았다(p<0.05). 그러나 운동량 및 좌심구혈을은 흥부 유도상 ST절의 하강이 있는 경우 7.6±3.0 METs 및 53.9±9.1%로 없는 경우의 9.1±2.7 METs 및 54.6±9.5%보다 낮았으나 통계적 유의성은 없었다(p=0.180, p=0.823). 2) 관상동맥조영술상 전흉부 ST절의 하강이 동반된 군에서는 유의한 좌전하행지나 좌회선지의 협착이 있는 경우가 60.9% 및 57.9%로 ST절의 하강이 없는 군에서의 34.5% 및 7.7%와 비교해 좌관상동맥에 협착이 동반된 경우가 많았다(p=0.050, p=0.001). 3) 관상동맥조영술상 세 혈관질환의 빈도는 흉부유도상 ST절의 하강을 보인 23예에서 10예로 ST절 하강이 없었던 29예중 2예에 비하여 유의하게 많았고(P=0.007), 단 혈관질환의 빈도는 ST절의 하강을 보인 군에서 23예중 5예로 ST절 하강이 없었던 29예중 17예에 비하여 유의하게 적었다(P=0.002). 두 혈관질환의 경우에는 각각 8예와 10예로 양군간에 유의한 차이가 없었다. 4) 흉부유도상 ST절 하강의 빈도는 단 혈관질환 22예 중 5예에서, 두 혈관질환 18예중 8예, 세 혈관질환 12예 중 10예에서 관찰되어 협착이 있는 관상동맥의 수가 많을수록 ST절의 하강이 나타나는 빈도가 많음을 보였다(p=0.00308). 그러나 흉부유도상 나타난 ST절의 하강을 모두 합하여 구한 ST절 하강의 합은 협착이 있는 관상동맥의 수와 통계적인 유의성이 없었다. 5) 심초음파도상 좌심실 하벽의 벽운동은 ST절 하강을 보인 군에서는 akinesia가 83.3%, hypokinesia가 11.1%, 정상 벽운동이 5.6%로, ST절 하강이 없었던 군에서의 dyskinesia가 3.6%, akinesia가 39.3%, hypokinesia가 25.0%, 정상 벽운동이 32.1%와 비교하여 ST절의 하강이 있는 군에서 유의하게 벽운동의 장애가 빈번함을 보였다(p=0.03891). 그러나 좌심실전벽, 측벽 및 중격부위에서는 유의한 벽운동의 차이가 없었다. 결론 : 급성하벽심근경색증 환자의 전흉부유도에서 ST절의 하강이 동반되는 경우 다혈관 질환의 가능성이 높으며 좌심실확장기말압이 상승되었고 운동능력은 감소되어 있었다. 또한 심초음파도상 좌심실하벽의 벽운동장애도 심하였다. 따라서 전흉부 ST절의 하강을 동반한 급성하벽심근경색증 환자는 전흉부유도에 ST절 하강이 없는 경우보다 예후가 불량할 것으로 생각되며, 보다 적극적인 치료가 필요할 것으로 생각된다. The purpose of this study was to determine the significance of precordial ST segment depression appearing during acute inferior myocardial infarction and to assess the correlation of that with angiographic finding. 52 patients were allocated into two groups based on the existence of precordial ST segment depression : 23 patients with ST segment depression and 29 patients without ST segment depression. The extent of coronary artery disease as well as the prevalence of significant stenosis (≥70%) in left anterior descending artery were more frequent in patients showing precordial ST segment depression than in patients not showing them (p=0.050) and the result were similar in cases of left circumplex artery (p=0.001). On echocrdiographic examination of left ventricular (LV) wall motion, it showed more severely decreased inferior LV wall motion in patients showing precordial ST segment depression than in patients not showing them (p=0.03891) even though the other segment of LV wall motion didn't show the statistical difference between both groups. The other cardiac parameters such as LVEDP, exercise amount (METs) and ejection fraction were tend to showing bad profile in patients with precordial ST segment depression. From the above results, we could deduce that patients with precordial ST segment depression have relatively large infarction or concomitant left coronary artery disease, so they need more caution and intensive theraphy.

측두골의 거대한 판간내 표피양 낭종 1예

박소영,정대건,김병국,김정묵 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.11

전기분해에 의한 계면활성제 함유 폐수처리에 관한 연구

이춘식,정병윤,하태명,박현건 진주산업대학교 농업기술연구소 2001 農業技術硏究所報 Vol.14 No.-

This study was carried out to investigate the purification effect of wastewater included LAS by electrolysis treatment system. Wastewater included LAS treated electrolysis treatment process, temperature of inner treated system were high than those of this raw wastewater, temperature change was electrolysis oxidation of LAS wastewater both cathode and anode. Electrolysis oxidation was oxidized LAS by oxidants of chlorine and ozone, on the time, according to the result development of treated efficiency on electrolysis contact time.