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오스템퍼링 조건과 Mn 의 양이 ADI 의 기계적 성질에 미치는 영향
서관수,예병준 ( Kwan Soo Suh,Byung Joon Ye ) 한국주조공학회 1992 한국주조공학회지 Vol.12 No.5
N/A In this study, we investigated effect of austempering factors and Mn addition on mechanical properties of ADI with ferrite-bainite matrix by pearlite-bainite transformation treatment. Ductile cast iron specimens containing various of Mn were austenitized at 875℃ for 350 sec or 925℃ for 160 sec and then austempered at 300℃ or 400℃ for the various periods(5 to 30 min). Manganese increased pearlite volume fraction in as cast ductile cast iron. The obtained results are as follows ; 1) In austenitizing, hardness of sepecimens austenitized at 875℃ for 350 sec was higher than that of 925℃ for 160 sec. 2) In effect of austempering temperature, tensile strength and handness of specimens austempered at 300℃ was higher than that of 400℃. However, elongation had reverse tendency. 3) Increasing austempering time decreased hardness due to the increment of bainite and retained austenite fractions. However, toughness are increased.
구상흑연주철의 Mn 성분과 펄라이트-베이나이트변태처리의 변화가 미세조직에 미치는 영향
서관수,예병준 ( Kwan Soo Suh,Byung Joon Ye ) 한국주조공학회 1992 한국주조공학회지 Vol.12 No.3
N/A The purpose of present investigation is to obtain ductile cast iron with ferrite-bainite matrix by pearlite-bainite transformation treatment. Ductile cast irons having three kinds of Mn ampunt had been manufactured. Mn increased pearlite volume fraction iin as-cast ductile cast iron. Ductile cast irons of different pearlite fraction were austenitized at 875℃ for 230-350 sec or 925℃ for 130-170 sec followed by austempering at 300℃ or 400℃ for the various periods of time from 5 to 30 min. When specimen was austenitixed for 130 sec at 925℃ and for 230 sec at 875℃, pearlite was transformed into austenite. Bainite around graphite was found at 925℃ for 170 sec. Bainite in grain boundary of ferrite was happened at 875℃ for 350 sec. During the austempering process, acicular bainite was precipitated at 300℃ and lath bainite was precipitated at 400℃. Increment in manganese content restrained bainitic transformation. Retained austenie was of little quantity.
서관수,김동웅,Seo, Gan-soo,Kim, Dong-woung 대한한방안이비인후피부과학회 1999 한방안이비인후피부과학회지 Vol.12 No.2
Tongue examination is the most unique and important diagnostic method of oriental medicine. It reveals patients condition and give some information about direction of therapy and background of disease as well as produces clue of duration of disease changing that grasps it from outside. The aims of this study show that results of tongue examination is related to somewhat special pattern. we study 27 patients(age of means: 63.01 years old, male: 14, female: 13) who come to Wonkwang University Oriental-Medicine Hospital at Chonju with diabetes mellitus or diabetes mellitus complications. Tongue colors of this study result in pale-red 8 cases, pale 6 cases, red 6 cases, crimson 5 cases, blue-green-purple 2 cases and tongue fur of this study result in white-fur 16 cases, yellow-fur 7 cases, black-fur 1 case, none-fur 3 cases. And the condition of tongue fur with grimy and thin result in thin-white-fur 12 cases, white-grimy-fur 4 cases, thin-yellow-fur 5 cases, grimy-yellow-fur 2 cases, black-fur 1 case. Means level of fasting glucose during 7 days was $223.24{\pm}32.l7mg/dl$ and postprandial 2hours was $286.37{\pm}24.54mg/dl$ There were no changes in tongue body and tongue color but changes occur in tongue fur with 9cases in this period. 5 cases of patient make a difference between FBS(fasting blood glucose) and postprandial blood glucose level more than l00mg/dl (2 cases of patient with thin-white-fur gradually turned to slight-yellow-fur. There were no changes in 2 cases of patient with crimson-none-fur and pale-white-fur. 1 case of patient with slimy-yellow-fur turned to black fur.) 11 cases of patient had lesser than $10\%$ hemoglobin $A_lC$ and tongue color of these patient were pale-red 5cases, pale 2 cases, red 2 cases, crimson 2 cases. 16 cases of patient had more than $10\%$ Hemoglobin $A_1C$ and tongue color of these patients were pale-red 3 cases, pale 4 cases, red 4 cases, crimson 3 cases, blue 2 cases. This result shows that quantity of Hemoglobin $A_1C$ make a somewhat role in tongue color. The above results show that tongue color, fur color, condition and change of fur in diabetes mellitus patients is various in pale-red, pale, crimson, none-fur. So it is difficult to give an exact diagnosis on pathology of diabetes mellitus only with tongue examination because there are a little matches between blood glucose level, prevalence-period, short-term blood glucose regulation and tongue and fur colors.
감두탕가미방(甘豆湯加味方)을 이용한 급성 파라콰트 중독후 급성 간염의 한방 치료 1예
신선호,김동웅,최진영,서관수,조권일,신학수,한명아,Shin, Sun-Ho,Kim, Dong-Woung,Choi, Jin-Young,Seo, Gwan-Su,Cho, Gwon-Il,Shin, Hak-Soo,Han, Myoung-Ah 대한한방내과학회 2001 大韓韓方內科學會誌 Vol.22 No.2
Paraquat is one of the widely used herbicides. But it is fatal, if it is consumed by people. Paraquat poisoning causes acute renal failure, hepatic dysfunction, and progressive respiratory failure. There are no effective antidotes to paraquat. This report is about one case's treatment for acute hepatitis caused by paraquat. The patient was hospitalized in the Department of Internal Medicine, Wonkwang University Oriental Medical Hospital in Chonju. The patient received the following treatments while in an acute stage : Gamdutanggamibang(甘豆湯加味方), which consists of Radix glycyrrhizae(甘草), Semen mungo(綠豆), burned powder of Rhizoma rhei(大黃炒炭末), Succus phyllostachyos(竹瀝), chinese ink(墨汁) and fluid therapy. The patient received Sagunjatanggamibang(四君子湯加味方) while in a chronic stage. The patient improved faster with the above treatments than with the conventional treatment. We hope that this report will help widening the clinical range of oriental medicine, and improve systemic efforts in treating paraquat poisoning cases.
전병윤,전만수,이민철,신상현,서관수 한국화재소방학회 2006 한국화재소방학회논문지 Vol.20 No.4
본 논문에서는 소방용 스프링쿨러 분기관의 새로운 설계와 이의 제조 공정 기술을 제시한다. 기존의 세 조각 분기관이 냉간단조 기술의 적용으로 한 조각의 분기관으로 개선되었다. 새로운 분기관의 냉간단조 공 정은 강소성 유한요소법에 바탕을 둔 단조시뮬레이션 기술을 이용하여 최적화되었다. 적용연구를 통하여 제안된 시스템이 훨씬 경제적이고 구조적으로 안전함이 입증되었다. In this paper, a new design of the sprinkler branch outlet for fire-extinguishing purposes is presented together with its manufacturing process. The conventional three-piece design is improved by a new one-piece design with the help of the manufacturing technology of cold forging. The forging process is simulated and optimized by the rigid-plastic finite element method and the design tryouts are thus minimized. It has been shown through its applications that the presented system is much more economical and structurally stronger.
당뇨합병증으로 인한 심근병증 환자를 五味子湯加味方으로 치험한 1例
조권일,신학수,한명아,서관수,김관식,김동웅,신선호,최진영 대한동의생리학회,대한동의병리학회 2001 동의생리병리학회지 Vol.15 No.6
This case study is about the effect of Omija-tang-gamibang(五味子湯加味方) for the cardiomyopathy complicated by diabetes mellitus, which was had been used except first 15 days during admission. Main complaints of our 61-year-old patient was dyspnea, edema of lower limb, general weakness, flank pain, dysuria, dyspepsia. He was transfered from other hospital after already being diagnosed as diabetic cardiomyopathy. His symptom was improved after taking the Omija-tang-gamibang(五味子湯加味方) for 20 days and he was discharged. From this case, it is thought that added the Omija-tang-gamibang(五味子湯加味方) is effective to diabetic cardiomyopathy and that more studies and examinations are needed in futher.
욕창(褥瘡)환자를 활석분(滑石粉)으로 치료(治療)한 치험 2예
양미라,최진영,신학수,정용준,김관식,서관수,김동웅,신선호,조권일,Yang, Mi-Ra,Choi, Jin-Young,Shin, Hak-Soo,Jung, Yong-Jun,Kim, Kwan-Sik,Seo, Kwan-Soo,Kim, Dong-Woung,Shin, Sun-Ho,Cho, Gwon-Il 대한한방내과학회 2001 大韓韓方內科學會誌 Vol.22 No.4
Pressure sore(Decubitus ulcer) is an area of ulceration and necrosis of the skin and underlying tissues occurring over the body prominence such as the sacrum, greater trochanter, scapula, lateral malleolus, thoracic spine and heels after prolonged or often repeated pressure. These days incidence of pressure sore have been increased because of the many population of the old, traffic accidents and cerebral vascular disease. But the treatment was not confirmly established. As for treatment, we used Talcum powder for 10 days in case 1 and 6 days in case 2. The patients were improved within 14 days after treatment in case 1 and 10 days in case 2.