飼料資源開發을 위한 雜灌木樹葉의 飼料價値와 韓牛의 放牧利用에 關한 硏究

尹益錫,陸完芳,李仁德,曺圭燉,金炯基 건국대학교 1978 學術誌 Vol.22 No.1

As a part of forestry utilization for livestock feed resources the feeding value ague of shrub leaf by growth stage and grazing behabiour of the native cattle at shrubby grassland in function of seasons were investigated and the following results were obtained. 1. The crude protein content of oak leaf declined as the growth stage increased whereas the contents of crude fiber and crude fat showed the opposite tendency. 2. The intake of oak leaf paralleled with the amount given while the intake of the mixed grass leas remarkable increased and the body weight gain was also remarkably increased. 3. The average number of oak leaf intake was 70.5 times for spring, 148.7 for summer, and 395.7 for autumn. 4. The grazing time by the native cattle was decreased in the order of spring, autumn, and summer. As for the grazing behaviour, the intake activity was most active during morning, mid-day and late afternoon or three times a day. 5. The duration of rumination was found to be in the decreasing order or summer, autumn and spring, cattles ruminated more when the grasses were more abundant. 6. As for the inactive period of animal, it was short during spring when the animals spent more time for eating but it was about 5 times longer during both summer and autumn.

鐵原地區 自然草地에 대한 群落構造 生産性 再生力 및 土壤肥料學的 硏究

尹益錫,張楠基,金炳泰 건국대학교 1969 學術誌 Vol.10 No.1

The investigation was made on the relationship among vegetation, net productivity, regrowth and soils of Moonheri-Wasoori, Soodowon-Sungilkyo and Mt. Kumhak grasslands in Chulwon area. The following conclusions have been made as the results of study. 1.The vascular flora of the grassland in Moonheri-Wasoori was composed of 102 species, the most of which were Medicago denticulata, Miscanthus sinensis, Arundinella hirta, Festuca ovina and Cassia nomame. 2.The flora of Soodowon-Sungilkyo grassland was composed of 74 species, the most of which were Arundinella hirta, Miscanthus sinensis, Carex nanella, Festuca ovina and Cassia nomame. 3.It of Mt. Kumhak grassland was composed of 78 species, the most of which were Arundinella hirta, Carex nanella, Festuca ovina, Miscanthus sinensis and Aster scaber. 4.These five species contributed greatly to the standing crop of live material which was in excess of 60% of it. 5.The peak standing crop of each 413.7, 307.6 and 348.7 g/m2 in Moonheri-Wasoori, Soodowon-Sungilkyo and Mt. Kumhak grasslands wers reached in August under flooded conditions as a result of the growth of dominant species, Medicago denticulata and Arundinella hirta. 6.The net prodution of organic matter was slight in some intervals but occurred throughout the growing season. 7.After cutting of grasses, the regrowth of new leaves mainly depended on growing stage and edaphic factor. 8.Characteristics of the natural grassland soils, especially, concerning water, total nitrogen, available phosphorus and exchangeable calcium were clarified and might be depend upon the quantity of plant production. 9.Nitrogen, phosphorus and calcium concentration of leaves of Medicago denticulata, Arundinella hirta and Miscanthus sinensis were higher than of stems. 10.Even if there were differences in the amounts of nutrients amend Medicago denticulata, Arundinella hirta and Miscanthus sinensis for single species and stands, they were covered by variations within spesies in the present survey.

自然 草地의 草生 改良에 관한 硏究<第3報> : -Red Clover의 初期 生育에 미치는 燐酸의 效果 -

尹益錫 건국대학교 1968 學術誌 Vol.9 No.1

This experiment was carried out to study the effects of seven different levels of super-phosphate on the yeild and early growth of red clover. The results obtained are summarized as follows. ① Level of supply of super-phosphate had no effect on the germination of red clover. ② No appreciable growth has been detected when no phosphate was applied. Growth rate of toed clever of all treatment was almost nil after middle of October. ③ Rate of growth and the productivity were significantly increased as the level of phosphate increased. Linear relationships were found between dry matter content and height, and petiole length of Red clover. ④ Content of available phosphate has increased as the level of phosphate applied increased.

공중보건의의 고혈압 진단 및 치료과정 평가

송윤미,김윤,조홍준,정희숙,김용익 한국의료QA학회 1996 한국의료질향상학회지 Vol.3 No.1

Background : Little work has been carried out regarding quality assessment research in a primary care setting, comparing with that of hospitals. This study aims to evaluate the process of diagnosis and management of hypertension by public health doctors on the basis of pre-established clinical guideline, and to identify several modifying factors associated with them. Methods : Hypertension was selected as the target disease, because it is a chronic disease which is of great public health importance. Self-administered questionnaires were mailed to public health doctors practicing at health centers and health subcenters across the nation. The response rate was 20.9%. The questionnaire included the diagnosis and management process such as measuring blood pressure, history taking, physical examinations, and treatment approches and potentially modifying factors such as level of training, duration of practice as a public health doctor, and education on management of hypertension. Results : Public health doctors pay little attention in measuring BP, hypertension related history taking, performing physical examination and laboratory examination. But they devoted much effort in diagnosing hypertension exactly and giving nonpharmacological treatment. Among various antihypertensive drugs, calcium-channel blockers were the most preferred agent(50.8%). Level of training, duration of practice as a public health doctor, and education on management of hypertension made no difference on quality of care(p>0.05). Conclusion : These public health doctors showed poor compliance with the preestablished clinical guidelines, which leaves much to be desired in diagnosion and managing hypertensive patients by public health doctors. This study might be able to contribute to develop some strategies, such as educational programs, which would be able to improve the process of care in hypertensives.

마이크로 엔드밀링에서 음향방출 신호를 이용한 상태감시

정연식,강익수,김전하,강명창,김정석,안중환 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

Ultraprecision machining and MEMS technology have been taken more and more important position in machining of microparts. Micro endmilling is one of the prominent technology that has wide spectrum of application field ranging from macro parts to micro products. Also, the method of micro-grooving using micro endmilling is used widely owing to many merit, but has problems of precision and quality of products due to tool wear and tool fracture. This investigation deals with state monitoring using acoustic emission(AE) signal in the micro-grooving. Characteristic evaluation of AE raw signal, AE hit and frequency analysis for state monitoring is also presented in the paper.

치료저항 정신분열병환자에서 Clozapine의 효과 및 안전성

지익성,김영희,신석철,왕성근,신윤오,이선우,김정란 충남대학교 의학연구소 2001 충남의대잡지 Vol.28 No.2

In order to assess the efficacy and safety of clozapine, 50 in-patients with treatment-resistanat schizophrenia were evaluated using PANSS(Positive and Negative Symptome Scale for Schizophrenia), CGI(Clinical Global Impression), AMS(Abnormal Involuntary Movement Scale), Adverse Event-Somatic Symptoms, Neurological Rating Scale for EPS before and during treatment. Mean daily dosage of clozapine was 344.15±123.43mg at 12th week. A clinically significant improvement in positive, negative, and general psychopathology was noted as early as week 2 through 12 week. The tolerability of clozapine was generally found to be good. Drowsiness/sleepiness, Hypersalivation, and Constipation were the most common side effects. There was no neutropenia, and 3 patients suffered from seizures. These results suggest that clozapine is worth considering for the treatment-resistant patients

除草劑處理에 의한 簡易草地造成에 관한 硏究

李根常,尹益錫 건국대학교 1978 論文集 Vol.7 No.1

This study was conducted to investigate the effects of several herbicides under oversowing and the application methods of Gramoxone as well as effects of burning. These trials were established in 1974 on natural grassland in Che Ju where Miscanthus purpurascens and Imperata cylindrica are dominant and foil type is volcano ash. The results obtained from 3 years experimentation are summarized as follows. 1.Gramoxone, of immediate effect, and Round-up, of slow effect showed similiar effect of weed control and both herbicides did not affect on emergence and early growth of sown species. 2.In case of oversowing, herbicides application did not increase the total dry matter yield but the yield of sown species was increased significantly (P < 0.01). There were, however, no significant differences in grasses yield among different herbicides. 3.In the natural grassland where Miscanthus purpruascens and Imperata cylindrica were dominant, the optimal amounts of herbicides were 400cc in Gramoxone and 600cc in Round-up per 10 a when oversowing method was applied. 4.The times of herbicide application and burning of grassland before sowing did not affect on total dry matter yields, but burning helped emergence and establishment of the sown species compared to no burning. 5.When a pasture was established by oversowing the clover content was higher with herbicide application and increased with increasing rate of herbicides.

원자력발전소 PSI/ISI 데이터 관리를 위한 지능형 데이터 베이스 프로그램 개발

박은수,박익근,엄병국,박윤원,강석철 韓國非破壞檢査學會 1998 한국비파괴검사학회지 Vol.18 No.5

Windows 95 환경하에서 PSI/ISI 데이터의 효율적 관리를 위한 종합지원시스템의 구축과 다원적평가와 분석이 가능하고, 비파괴검사에 의한 원전기기의 건전성 평가시 규제측면에서 기술적인 지원을 할 수 있는 고리 원전 PSI/ISI 데이터 베이스 구축과 프로그램을 개발하였다. 이 프로그램을 활용하면 현재까지 수행된 고리 원전 PSI/ISI의 수행현황과 지금까지 발견된 결함에 대한 조사분석이 가능하며, 향후 국내 PSI/ISI결과의 자료분석이 가능한 전문가 시스템(expert system)개발에 한단계 접근하게 되었다. 그리고, PSI/ISI에서 발견된 결함에 대한 조사분석 결과를 근거로 결함의 종류, 형태, 처리방법 등에 대한 자세한 분석을 통하여 국내 원전 PSI/ISI 결과의 확률론적 신뢰도 평가, 또는 확률론적 안전성평가를 위한 결함검출확률곡선의 작성과 위험도에 근거한 가동중검사제도의 도입에 필요한 기초 자료를 제공하였다. 더 나아가 지금까지의 자료분석을 바탕으로 보다 경제적이며 신뢰성이 높은 PSI/ISI의 수행으로 원전 압력경계기기의 건전성과 신뢰성 확보 및 수명예측을 위한 기초자료를 제공하였다. For an effective and efficient management of large amounts of preservice/inservice inspection(PSI/ISI) data in nuclear power plants, an intellegent Windows 95-based data management program was developed. This program enables the prompt extraction of previously conducted PSI/ISI conditions and results so that the time-consuming data management, painstaking data processing and analysis in the past are avoided. The program extracts, and the associated remedies. Furthermore, additional inspection data and comments can be easily added or deleted for subsequent PSI/ISI operation. Although the initial version of the program was applied to Kori nuclear power plant, this program can be equally applied to other nuclear power plant. And also this program can be used to offer the fundamental data for application of evaluation data related to fracture mechanics analysis(FMA), probabilistic reliability assessment(PRA) of PSI/ISI results, performance demonstration initiative (PDI) and risk-informed ISI based on probability of detection(POD) information of ultrasonic examination. Besides, the program can be further developed as a unique PSI/ISI data management expert system that can be apart of PSI/ISI data management expert system that can be a part of PSI/ISI Total Support System(TSS) for Korean nuclear power plants.

C-means 알고리즘을 이용한 마이크로 엔드밀의 상태 감시

권동희,정연식,강익수,김전하,김정석 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

Recently, the advanced industries using micro parts are rapidly growing. Micro end milling is one of the prominent technology that has wide spectrum of application field ranging from macro to micro parts. Also, the method of micro-grooving using micro end milling is used widely owing to many merit, but has problems of precision and quality of products due to tool wear and tool fracture. This study deals with condition monitoring using acoustic emission(AE) signal in the micro-grooving. First, the feature extraction of AE signal directly related to machining process is executed. Then, the distinctive micro end mill state according to the each tool condition is classified by using the fuzzy C-means algorithm, which is one of the methods to recognize data patterns. These result is effective monitoring method of micro end mill state by the AE sensing techniques which can be expected to be applicable to micro machining processes in the future.

대정맥-심방 우회술로 치료한 기질화된 혈전에 의한 하대정맥 폐쇄 : 증례 보고

문철,임훈,전훈배,염욱,윤익진,이석열,정윤섭 대한혈관외과학회 1999 Vascular Specialist International Vol.15 No.1

Suprarenal IVC obstruction occurs rarely but has various causes. Because this obstruction proceed chronically and usually has collateral circulation, if there is no IVC or hepatic vein obstruction symptom such as Budd-Chiari syndrome, operation is usually needless. However, although symptom is not combined, if malignancy can not be ruled out and there is no proper and radiologically visible collateral, mass resection with IVC wall and bypass graft should be done. 58 year-old female patient visit the hospital for IVC mass that is occasionally discovered by routine abdominal ultrasonography examination. After abdominal CT scanning and IVC venography, IVC obstructive mass between renal vein and hepatic vein was found. Patient didn't show any abnormality in hematological examination such as coagulation and platelet counts. There was no IVC obstruction symptom such as lower limb swelling. Inferior hepatic vein was abnormally dilated and this was regarded as collateral vessel for IVC obstruction. Radiologically, primary leiomyosarcoma was not ruled out and so operation was decided. Suprarenal IVC was dissected and mass was exposed. And with the use of femoral vein and right atrium, temporally veno-veno bypass was performed. Mass including IVC wall was excised and upper end of divided IVC was sutured. Lower end of divided IVC was anastomosed with 16 mm Dacron graft and graft was anastomosed with right atrium by end-to-end methods (Cavoatrial shunt). Postoperative pathologic examination revealed the mass to be organized thrombi. After 2 weeks later, follow-up IVC venography was performed and good patency was found from IVC to right atrium through artificial bypass graft and patient was discharged without complications.