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金義慶,鄭秉憲,李聖淵,朱麟源 한국산림경제학회 2002 산림경제연구 Vol.10 No.2
본 연구는 밤, 잣, 대추에 대하여 이루어지고 있는 최소시장접근물량에 대한 수입관리제도의 문제점을 살펴보고 그 개선방안을 도출하는데 목적이 있다. 주요 결과를 보면 밤의 경우 1995년 이후 평균 10%정도의 낮은 수입이행률을 보이고 있으며, 잣의 경우 환율 급변에 의한 환차손으로 수입관리기관이 손해를 보거나 시장조절기능도 미약하다는 문제점을 가지고 있는 것으로 나타났다. 따라서, 수입관리방식은 잣의 경우 현재의 국영무역에서 수입권공매방식으로, 밤의 경우 현재의 수입권공매방식을 선착순배정방식이나 수입허가제방식으로 바꾸는 것이 바람직한 것으로 분석되었다. 또한, 수입시기를 국내산 성출하시기를 피하여 수입하는 것이 바람직하며, 수입냉동품, 세관검사 및 저가신고에 대한 적절한 수입관리대책도 필요한 것으로 나타났다. The objectives of this study are to analyze the problems of import administration system for minimum market access of chestnut, Korean pine nut and jujube, and suggest its improvement measures. Major findings are as follows : The fill rate of minimum market access for chestnut was very low of about 10% since 1995. The import administration agency of Korean pine nut suffered the loss from abrupt exchange rate change and had weak market control, Therefore it was suggested that Quota Auction System is better than current State Trading System for Korean pine nut, and First-Come First-Served System or Import License System is better than current Quota Auction System for chestnut. And it is desirable to import during the period beyond the main harvesting season for domestic products, and needed to construct the adequate aministration measures for forzed product import, customs examination and low price declaration.
박진규,김경원,김병린,민병일 大韓顎顔面成形再建外科學會 1990 Maxillofacial Plastic Reconstructive Surgery Vol.12 No.3
Electrical burns of the lips are most frequently seen in small children, who are apt to chew on electrical cord or plug, the ends of extension cords in their mouth, saliva creates a short circuit across the terminals within the plug, causing an electrical burn. Tissue destruction with electrical burns is sudden and extensive. Extensive, deep coagulation necrosis is instaneously produced by the extreme temparatures of electrical arc. If the child is well grounded, the circuit flow through his body may cause cardiac arrest. The purpose of this report is to document two cases of electrical lip burn and reconstruction of the lip defect with some local flap techniques. For case 1, Z plasty & V - Y plasty and lengthening of the commissure and in case 2, Abbe flap technique was used and scar was revised later. Z - plasty and V- Y plastry were used for scar release and Abbe flap was designed on lower lip to meet the need of upper lip. For short of right lip width, lengthening of the commissure was done. We are to report the improvement with forementioned operation on the patient of electrical burn upon the lip.
백서에서 냉동건조골, 표면탈회골, 탈회골분말을 골형성 단백질과 병용시 골유도 과정에 대한 비교 연구
김병린(Byeong Rin Kim),이종호(Jong Ho Lee),김종원(Jong Won Kim) 대한구강악안면외과학회 1998 대한구강악안면외과학회지 Vol.24 No.4
The purpose of this study is to compare the osteogenic activity of pBMP combined with the following, freeze-dried allogeneic bone, surface demineralized allogeneic bone, and demineralized allogeneic bone powder in rats. So, authors made partial purification of the pBMP. Using rat calvaria, an 8㎜ size in diameter bony defect was grafted using pBMP-ibm in the experimental group A as the control group, freezed dried allogeneic bone graft plus pBMP-ibm in the experimental group B, surface demineralized allogeneic bone graft plus pBMP-ibm in the experimental group C, and demineralized allogeneic bone powder plus pBMP-ibm in the experimental group D, respectively. The rats were sacrificed at the week of 1st, 2nd, 4th, 8th after implantation and examined grossly, biochemically, biomechanically, microscopically. The results were as follows 1. Areas of Implanted defect acquired osseous union at post op 4th week. 2. According to the result of hardness test, the experimental group B was most rigid than any other experimental groups at post op. 4th week. And the experimental group B, C and D were more rigid than the experimental group A at post op. 8th week. 3. As time goes on, calcium content of implanted area has increased gradually in all experimental groups except the experimental group B. 4. In the early stage of grafting, the new cartilage formation & new bone formation were more active in the experimental group B, C and D than in the experimental group A, but in the late stage of grafting, there was no significant difference in the new bone formation among the experimental groups. 5. New cartilage and new bone formation occurred as folIows, first in the experimental group D, then the experimental group C, the experimental group B, the experimental group A, respectively.
가토에서의 막성골 이식과 연골내 골화골 이식의 비교연구
김병린(Byeong Rin Kim),김종원(Jong Won Kim) 대한구강악안면외과학회 1990 대한구강악안면외과학회지 Vol.16 No.2
According to its origin, the bone is classified into membranous bone and endochondral bone. Clinical observation suggests that membranous bone undergoes less resorption than endochondral bone when grafted in the craniofacial region. Author grafted membranous bone block (from mandible) and endochondral bone block (from ilium) into rabbit as onlay grafts, and measured the amount of resorption in graft, and examined the specimen histologically. The obtained results are as follows: 1. Changes in volume of membranous bone graft and endochondral bone graft was statistically significant. (membranous: P<0.05, endochondral: P<0.01) 2. In membranous bone graft, height alone was significantly changed statistically. (P<0.05) 3. In endochondral bone graft, length, width and height were significantly changed statistically. (length:P<0.05, width:P<0.01, height:P<0.01) 4. Mean Height Decrements of membranous bone graft and endochondral bone graft at 20 week are 4±12%, 41±15% respectively. 5. Histologically, membranous bone graft was more vascularized than endochondral bone graft.
L-lactic Acid Production Using Adaptively Evolved Saccharomyces cerevisiae
Byeong-Kwan JANG,Deokyeol JEONG,YeBin JU,Soo Rin KIM 한국생물공학회 2021 한국생물공학회 학술대회 Vol.2021 No.10
Lactic acid (LA) is one of the organic acids applied in various industries such as food additives, cosmetics, medical use, packaging, and pharmaceuticals. For this reason, the demand for LA is rapidly increasing in worldwide. Lactic acid bacteria is used as LA producing microbes but ironically it doesn’t tolerate high concentration of LA. But Saccharomyces cerevisiae yeast has high acid tolerance and its genetic engineering is not difficult. Therefore, S. cerevisiae already used as a platform to produce various valuable chemicals. In our previous study, we developed yeast strain that can produce LA (SR8LDH). In this study, the SR8LDH was adaptively evolved in 8% of LA condition and evolved strain was isolated (BK01). The BK01 strain was able to survive even at 8% LA condition or more. LA production of BK01 was up to 119 g/L and pH was even under 3 at that fermentation. In fermentation of lignocellulosic biomass, BK01 not only produced 12.5 g/L of LA, but also showed tolerance to 4 g/L of acetic acid, one of the fermentation inhibitors of lignocellulosic biomass. This suggests that BK01 could be presented as novel industrial LA producing yeast strains.
유병선(Byeong-Seon Yu),김희도(Hee-Do Kim),이채린(Chae-Rin Lee),김석균(Seok-Kyoon Kim) 제어로봇시스템학회 2018 제어·로봇·시스템학회 논문지 Vol.24 No.10
This study suggests an auto-tuning controller for quadcopter attitude control applications. The auto-tuning algorithm incorporated in the proposed controller is derived from the steepest gradient method, and it minimizes a quadratic-type cost-function. The effectiveness of the proposed controller is experimentally verified using an F450 quadcopter from DJI corporation, compared with a classical cascade-type proportional-integral (PI) controller, minimizing a cost-function in an off-line manner.