성숙한 Longissimus Dorsi근과 Soleus근의 근원섬유단백질의 특성비교

양융,최혁준,윤창훈,신완철,오상환 한국노화학회 1991 한국노화학회지 Vol.1 No.1

세라믹 분리막을 이용한 염료용액 처리에서의 역세척 효과

양정목,김현기,이병환,김상용,김지형 경희대학교 2004 環境硏究 論文集 Vol.13 No.-

The composition of wastewater from dyeing and textile industry is highly variable depending on the dyestuff type. generally the wastewater has high levels of Chemical Oxygen Demand (COD) and color. The decolorization, Total Organic carbon (TOC) removal and petnleate flux used were examined using reactive yellow 84 as dye and ceramic membrane process. On addition, dye particle size distribution, clean water flux and Molecular Weight Cut-Off (MWCO) were measured. The backflushing results show that best permeate flux was obtained when backflushing was performed 3 seconds every 2 minutes at A bar from the pei meaty side. the backflushing frequency and pulse were the most important factors affecting the permeate flux.

수평거리에 따른 요배근력과 척추기립근의 근전도 변화

양성환,김종인,최정화,박범,갈원모 설비관리학회 2001 설비관리학회 학술논문집 Vol.7 No.-

This study evaluated the compression force at the L5/S1 disc using back strength and IEMG(Integrated Electromyography). We divided the distance into one-half, three-fourth and full, measured the back strength. The results showed significant difference much among the cases. IEMG values were analyzed under the condition of fixed vertical factor, two horizontal factors, and 2 times per minute for the stoop posture, As the result, there are significant differences between horizontal distance 35cm and 55cm. This result showed that back strength decreased and the motor units of erector spinae muscle increased as the horizontal distance increased. Therefore, decreasing the horizontal distance to decrease compression force at L5/S1 is important on preventing a low back pain. Also. by using these data for prediction musculoskeletal disorders if we design equipment, machine and apparatus for human welfare, we can give advantage of prevention of low back pain much. We will be able to apply these data to work method or workplace lay-out.

대칭과 비대칭 인양작업 자세에 대한 생체역학적 요추부하 비교

양성환,최정화 한국생산성학회 2001 生産性論集 Vol.15 No.2

The purpose of this study was to quantitatively prove the asymmetric lifting acts on the risk factor of low back pain by a comparison of muscle activities of spinal loading and muscle strength(hand grip and back strength) between two types of lifting tasks (symmetric and asymmetric). Fourteen male subjects were participated in the experiment. We analysed and compared hand grip force, back strength. EMG(Electromyography), and IEMG (Integrated Electromyography) values for the stoop posture between symmetric and asymmetric lifting tasks using paired t-test. As the result, the back strength decreased in twisting posture. According to the result of EMG analysis, there were significant differences between right and left erector spinae muscle in asymmetric lifting task regardless of load. When subjects lifted boxes of right side, EMG values of left muscle were higher than those of right muscle. As twisting angle increased, EMG values of left muscle increased and EMG values of right muscle decreased. The results of IEMG analysis were similar to the results of EMG analysis. The results of EMG values during lifting indicated that the take-of stage was most stressful.

노인 외상 환자의 중증도 분류 시 Triage-revised Trauma Score의 의의

양영모,하영록,정성필,김승환,유인술 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3

Backgrouds: The mortality of geriatric trauma patients is higher than that of other age groups. However, little research has been done the methods or criteria of triage for geriatric trauma patients. This study evaluated a clinical significance of the triage-revised trauma score(t-RTS) for triage of geriatric trauma patients. Methods: We retrospectively analyzed clinical data on 528 trauma patients over 65 years of age who were treated from Jan 1999 to Dec 2000. The t-RTS was calculated utilizing the RR(respiratory rate), SBP(systolic BP), and GCS scores and the ISS was abstracted from the final diagnosis. The obtained t-RTS and ISS were evaluated using the measures of sensitivity, specificity, accuracy, and AUC curve. Results: The overall mortality rate was 9%, and there was no significant differences between the survival group and the mortality group according to age and sex. The mean scores of SBP, RR and GCS of the survival group were significantly higher than those of mortality group(p=0.001). The mean of t-RTS and RTS of the survival group were also significantly higher(p=0.001), but the ISS was significantly higher in the mortality group(p=0.001). The t-RTS, RTS, and ISS showed good prediction rates on the ROC curve(p=0.001), and the AUC value was higher in the ISS than in the t-RTS and the RTS. The sensitivity and the accuracy were high in the t-RTS and the RTS, and the specificity was high in the ISS. The t-RTS is less than 10 for a survival probability of 50% or less Conclusions: Implementation of the t-RTS in the triage of geriatric trauma patients in the field and in emergency room would be very useful. The probability of death in geriatric trauma patients is high when the t-RTS is less than 10.

작업관련 근골격계질환의 인간공학적 실태조사 및 분석

양성환,김대성,최정화 한국생산성학회 2001 生産性論集 Vol.15 No.1

The purpose of this study is to provide the basic data of the evaluation methodology in order to apply the ergonomic program for industrial workplace. The result is helpful to establish the improvement alternatives that considered the assessment tools suitable work characteristics in order to prevent musculoskeletal disorders in workplace. We analysed the collected data of workers complaining of musculoskeletal-related pains during 4 months using musculoskeletal administration program(WinCare). As the results, the pained workers had mostly a pain in low back. The results showed that the pained workers in the automotive manufacturing industry pained in several body parts because they worked using the whole body. Also, most of pained workers in the electronic industry and the other industry pained respectively in the upper limb and low back related heavy load handling. That is due to difference of body parts used in each industry. The approach of this study will help to more precise assessment of the ergonomic work postures when establishing the ergonomic improvement plan, especially to consider the application method to workplace using the suitable ergonomic assessment tools classified by type of industry.

경도관 동맥색전술을 이용한 비정상 자궁출혈의 치료

양승부,최교창,이상진,정영진,임한혁,한효상,황인철,조환성 순천향의학연구소 2005 Journal of Soonchunhyang Medical Science Vol.11 No.1

Objective : Our purpose of this study is to evaluate the effectiveness of the transcatheter arterial embolization for the management of abnormal uterine bleeding. Materials and Methods : 14 patients with massive or recurrent uterine bleeding underwent percutaneous transcatheter arterial embolization between February 2003 and September 2004. We reviewed 14 cases of uterine artery or internal iliac artery embolization using gelfoam or PVA particles. Results : Good management of uterine bleeding was achieved in 13 of 14(93%) cases. The cause of abnormal uterine bleeding was myoma(5 case), post D & E bleeding(3), acquired vascular malformation(3), pseudoaneurysm(1), adenomyosis(1), and endometrial hyperplasia(1). Conclusion : Transcatheter artery embolization is an effective and life-saving procedure in massive or recurrent uterine bleeding. Early diagnosis and prompt transcatheter arterial embolization is a useful mangement of uterine bleeding.

생체단백질의 중합억제물질의 탐색에 관한 연구

양융,신동범,신완철,홍상필,오두환 한국노화학회 1992 한국노화학회지 Vol.2 No.1

槪線型 作用素에 관한 硏究

양인환,이상한 淸州敎育大學校 科學敎育硏究所 1996 科學과 數學敎育論文集 Vol.17 No.-

自然現象 중에는 線型空間의 構造를 갖는 것 보다, 線型空間을 一般化한 槪線型空間의 構造를 갖는 境遇가 더 많다. 1990年度부터 槪線型空間에 關한 硏究가 활발히 進行되고 있다. 本 論文에서는 槪線型空間위에서 定議된 槪線型作用素의 性質을 調査하여 다음 結果를 얻었다. (1) V(Y)가 Banach공간이면 V(B)(X, (Y, C))도 Banach공간이다. (2) X가 노름槪線型空間이고 C가 complete노름槪線型空間 Y에서 closed convex cone이며, X에서 Y로의 有界인 槪線型作用素의 集合 B(X, (Y, C))가 노름槪線型空間일 때 G. Godini의 embedding寫像 T:Y→E(Y)이 單射函數이면 B(X, (Y, C))가 complete이다.

새마을 簡易上水道事業의 評價分析과 合理的方案에 관한 硏究

梁相鉉,尹載殖,金煥起 全北大學校 1982 論文集 Vol.24 No.-

Anthor examined the small water supply works of 108 which had been excuted in Jenbug region before the year of 1977, and this is the report on the evaluation of the works and the proposed rational methods for the works. It was found that the excuted woks had many faults. Though water works were required the highly specialized abilities in engineering and administration, water works were excuted in too small units of each villagage, and the many fauts of the works were resulted. Accordingly, the method of excuting the water supply works with the larger units bound several villages is proposed as the rationl.