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Effect of Asymmetric Hot Rolling on the Texture Evolution of Fe–3%Si Steel
Tae‑Wook Na,Hyung‑Ki Park,박창수,Hyung‑Don Joo,Jong‑Tae Park,Heung Nam Han,Nong‑Moon Hwang 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.6
In Fe–3%Si steel, the hot rolling process affects not only the hot rolling texture but also the primary recrystallization texture. Here, the effect of asymmetric hot rolling was studied by comparing the difference in the texture evolved between asymmetricand symmetric hot rolling. The effect of asymmetric hot rolling on the texture of primary recrystallized Fe–3%Si steel wasalso studied. The symmetric hot rolling of Fe–3%Si steel produces a rotated cube texture at the center but Goss and coppertextures near the surface. Asymmetric hot rolling tends to produce Goss and copper textures even at the center like thetexture near the surface. After primary recrystallization, the dominant texture at the center changes from {001} <210> to{111} <112> and the new texture has a higher fraction of the grains which make the low energy boundary with Goss grainsthan that of symmetric hot rolling.
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하악골 골절 치료를 위한 miniplate와 관련된 매복견치의 치험례
황상희,박효상,권대근,남기영,김종배 대한치과교정학회 2005 대한치과교정학회지 Vol.35 No.2
하악 좌측 견치의 미맹출을 주소로 내원한 10세 여환의 과거 병력 조사 중 3년 전 교통사고로 하악 좌측 골체부에 골절이 생겨 miniplate로 관혈적 정복술을 시행받은 것을 발견하였다. 통상적인 외과적 노출과 교정적 견인치료로는 견치 맹출에 실패하였고, miniplate를 제거함으로써 정상적인 매복 견치 맹출에 성공하였기에 보고하는 바이다. This case report describes the treatment of an impacted tooth in relation to pediatrlc mandibular fracture. A 10-year-old girl presented with an impacted mandibular canine related with a miniplate in the left mandibular body area. An ordinary surgical traction ended in failure. Good occlusion was established by removal of the miniplate. It would be considered important to make an exact diagnosis of the cause and remove the mechanical obstruction instantly for successful orthodontlc treatment of an impacted tooth.
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황태연,유병철,정귀언,정수진,김성준,배기택,손혜숙,이종태,전진호,엄상화 인제대학교 2001 仁濟醫學 Vol.22 No.1
Objectives: Under the fee-for-service system, Korean hospitals have been suffering from the worsening profitability caused by law medical care fees. To overcome the difficulties, they have maximized the quantity of medical services and made relatively large investment in developing new medical services using high-priced medical equipment, medicines and medical supplies which were not covered by medical insurance system rather than reduced running costs. Materials and Methods: This study was made to analyze and forecast the revenue change of the department of Obstetrics and gynecology of an university hospital in Seoul, expecting the implementation of DRG system in 2000. Results: The results were as follows : 1.During the first two days of hospitalization. 41% of total medical service fee was occurred, which was thought that most of the check-ups and operations were made during this period. After two days of hospitalization, the new occurrence of medical service fee tended to reduce. 2.Out of total medical service fee, 67% of admission fee was occurred after 5 days of hospitalization. This was because medical service fees in obstetrics and gynecology department occurred during the first 5 days of hospitalization. 3.Out of fees for operation, treatment, medical supplies and blood transfusion. 71% was occurred during the first two days. 4. In case of fees for examination, 50% was occurred during the first two days. 5.A total of 53% of fees for medication and injection was occurred during the first 5 days. Conclusions: By the implementation of the DRG system, the income is forecast to increase by 800 won to 310,000 won by the disease group of obstetrics and gynecology department. To increase hospital income with the implementation of DRG system, the results of this study suggest that examinations should be done at out-patient departments before the hospitalization of patient, the discharge of patient should be noticed in advance to reduce the period of hospitalization, and admission appointment system should be implemented for the immediate operation and delivery.
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황병준,정광식,강태경,김광기,임서형,정상진 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)
Recently, as the alternatives to preserve environment such as effective usage of wastes or unusable resources are drawing attentions, researches and measures for the two tasks, which are reuse of waste wood and development of eco~friendly materials, are being examined and established in various fields. However, they are still insufficient. Therefore, in this study, for the efficient application of waste woods and eco~friendly effects, mortar was produced using sawdust as the waste wood and mineral material cement for combination, in order to produce inorganic boards using waste woods, which were made when sawing. The present study purposed to analyze the physical and dynamic characteristics of woody cement boards, which were made by modifying water~cement ratio for each wood inclusion rate based on a hardening~accelerator inclusion rate set in previous studies and, based on the findings, to provide basic data about the physical properties of inorganic boards made of waste wood, in order to produce woody cement boards using waste wood, which has problems in being used in the manufacturing of woody cement boards.
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孫基滉,白太鉉,朴鼎圭,崔大卿 충남대학교 의과대학 지역사회의학연구소 1988 충남의대잡지 Vol.15 No.1
It is well known that there is an imbalance of T lymphocyte subpopulation in lepromatous leprosy (LL). To determine whether this imbalance can be normalized along with the improvement of clinical symptomes, the status of T lymphocyte subsets was studied in the peripheral blood of the leprosy patients who have been treated for many years. The results were summarized as follows: l. The percentage and the total number of T lymphocytes were increased in both tuberculoid leprosy (TT) and LL patients as compared with controls (p<0.01). 2. The reduction of the percentage of helper T cells were significant in both bacteriologically positive LL (25.8%, p<O.01) and negative LL (31. 1%, p<0.05). 3. The percentage of suppressor T cell was significantly increased in both bacteriologically positive LL (31.5%, p<0.01) and negative LL (30.9%, p<0.01). 4. The reduction of T helper/supressor(H/S) ratio was significant in both bacteriologically positive LL (0.7±0.23, p<0.01) and negative LL (1.0±0.41, p<0.01), in contrast to controls (1.8±0.15). 5. The reduction of percentage of helper T cells was persisted in both bacteriologically positive LL (25.8%) and negative LL who convert to be negative within 5 years(25. 7%), but the increase were significant in negative LL who were convert to be negative in 6 to 10 years (31. 3%) and convert to be before 11 years(36.8%). 6. Bacteriologically negative LL patients still display impairment of CMI, but a few of them return to the normal value of the H/S ratio. 7. The results in patients with TT did not differ significantly from those of controls. From above results, defective CMI of LL was caused by the decrease of helper T cells and the increase of suppressor T cells. In spite of the H/S ratio progressively return to the normal value in a few patients, it is difficult to predict the clinical progression by this results because of the individual variations.
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직류 서보계의 오차신호 보상을 위한 신경망 제어기의 구성
고태언,이황재,남기봉 東義大學校産業技術開發硏究所 1998 産業技術硏究誌 Vol.12 No.-
The servo system requires faster and more accurate dynamic response. In many control techniques for servo system, the P-I control is mainly used to obtain precious response. But in the response-characteristic of the position control system controlled by the P-I controller, the transient response is more increased and settling time get longer. This paper proposed an algorithm using neural network for compensating error signal in the P-I controller. To show the effectiveness of the proposed algorithm, the computer simulation is performed to mathematical model of DC motor.
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朴基榮,李浚龜,金永一,朴泰均,辛泳一,黃載然,李賢,李秉烈 대전대학교 한의학연구소 2002 한의학연구소 논문집 Vol.10 No.2
As mentioned above, I have acquired some valuable results about medical treatment with acupuncture and Moxibustion of " Flank pain" after studying oriental medical books . The results Were like below: 1. Medical treatment with acupunctures of Flank pain belonged to the Urinary Bladder Meridian of Foot Taiyang, the Liver Meridian of Foot Jueyin, the Gall Bladder Meridian of Foot Shaoyang. 2. Medical treatmcnt with acupunctures of Flank pain used to Yang-laung-chan(陽陵泉), Gi-gu(支溝), Gi-mun(期門), Kan-su(肝兪) in turn. 3. Medical treatment with Ear acupunctures of Flank pain used to Dam(膽), Sin-Mun(神門), Gan(肝)in turn 4. Acupuncture point of Flank pain were lowrer limb part. chest and abdominal part, back part in turn. 5. Medical treatment with Moxibustion of Flank pain was the most Jang-mun(章門)
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방사선조사가 Streptococcus mutans에 미치는 영향
안기동,김규태,최용석,황의환 대한구강악안면방사선학회 2007 Imaging Science in Dentistry Vol.36 No.1
Purpose : To observe direct effect of irradiation on cariogenic Streptooccus mutans. Materials and Methods : S. mutans GS5 was exposed to irradiation with a single absorbed dose of 10, 20, 30, and 40 Gy. Viability and changes in antibiotic sensitivity, morphology, transcription of virulence factors, and protein profile of bacterium after irradiation were examined by pour plate, disc diffusion method, transmission electron microscopy, RT-PCR, and SDS-PAGE, respectively. Results : After irradiation with 10 and 20 Gy, viability of S. mutans was reduced. Further increase in irradiation dose, however, did not affect the viability of the remaining cells of S. mutans. Irradiated S. mutans was found to have become sensitive to antibiotics. In particular, the bacterium irradiated with 40 Gy increased its susceptibility to cefotaxime, penicillin, and tetracycline. Under the transmission electron microscope, number of morphologically abnormal cells was increased as the irradiation dose was increased. S. mutans irradiated with 10 Gy revealed a change in the cell wall and cell membrane. As irradiation dose was increased, a higher number of cells showed thickened cell wall and cell membrane and lysis, and appearance of ghost cells was noticeable. In RT-PCR, no difference was detected in expression of gtfB and spaP between cells with and without irradiation of 40 Gy. In SDS-PAGE, proteins with higher molecular masses were gradually diminished as irradiation dose was increased. Conclusion : These results suggest that irradiation affects the cell integrity of S. mutans, as observed by SDS-PAGE, and as manifested by the change in cell morphology, antibiotic sensitivity, and eventually viability of the bacterium. (Korean J Oral Maxillofac Radiol 2007; 37: 35-43)
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