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이용규 한국고용정보원 2023 지역산업과 고용 Vol.- No.-
재생(regeneration)의 어원은 유전자(gene)입니다. 다시 말해서 유전자를 다시 만드는 일, 바꾸는 일이 재생의 본래 뜻입니다. 원형, 시스템은 놔두고 외형만 바꾸는 것은 재생의 본질이 아닙니다. 유전자를 바꾸는 일은 결코 쉽지 않습니다. 게다가 이제까지 살아왔던 삶의 체계를 3년 만에 바꾸는 것은 더욱 어려운 일입니다. 도시재생이 도시재생사업만으로 달성될 수 있다면 그것은 재생이 아닌 재개발입니다. 결국 뉴딜사업은 재생을 위한 마중물의 역할이 되어야 합니다. - 『사북해봄마을 아카이브』(이용규, 2022, p. 6) 중 발췌 -
Candida kefyr β- galactosedase 의 고정화에 관한 연구
이용규,정기철,김창열 한국낙농학회 1989 韓國酪農學會誌 Vol.11 No.3
Candids kefyr CBS 834의 β-galactosidase를 cellulose triacetate에 고정화하였다. 효소를 고정화하기 위한 최적조건은 100㎖ methylene chloride에 10g의 cellulose triagetate를 용해한 액에 효소액 15%을 첨가하여 만든 후, 200 strokes/min으로 진탕반응했을 때 얻어졌다. 또한 섬유의 절단길이는 효소활성에 큰 영향을 주지 않았다. 고정화효소의 최적온도와 pH는 각각 50℃와 7.0이었고, 활성화에너지는 8,539 cal/mole이었다. ONPG를 기질로 하였을 경우 고정화 효소의 K_m과 V_(max)은 각각 7.4×10^(-5)M과 66.7 unit/㎎ protein이었고, 유당에 대한 K_m과 V_(max)은 3.3×10^(-4)M과 29.4 unit/㎎ protein이었다. 고정화 효소를 4℃에서 30일간 저장후 잔존활성과 3회 재사용후 잔존활성을 조사할 결과 각각 95%와 94%을 유지하였다. 고정화 효소 1g(190 unit)을 50㎖의 탈지유와 5% 유당용액에 첨가한 후 30℃에서 10시간 반응시켰을 때 각각 10%와 15%의 유당분해율을 보여주었다. β-Galactosidase from Candida kefyr CBS 834 was immobilized in the cellulose triacetate. The optimal condition for the immobilized enzyme was obtained by 15% of the enzyme solution added to 100㎖ of methylene chloride and 10g of cellulose triacetate. The length of fiber had hardly any an effect on the enzyme activity and the optimal condition for reciprocating water bath shaker was 200 strokes per minute. The optimal temperature and pH for the immobilized enzyme were 50℃ and 7.0, respectively. The activation energy for the immobilized enzyme was 8,539 cal/mole. The Km and Vmax of the immobilized enzyme, on ONPG were 7.4 × 10^(-5)M and 66.7 unit/㎎ protein, whereas those on lactose were 3.3 × 10^(-4)M and 29.4 unit/㎎ protein, respectively. The rate of remained enzyme activity for the immobilized enzyme stored at 4℃ for 30 days was 95%, and when reused for three times was 94%. When the skim milk (4.8% lactose) and 5% lactose solution of 50㎖ were reacted with the immobilized enzyme (190 unit) for 10hrs at 30℃, 10% of the lactose in skim milk was hydrolyzed, whereas 15% of the lactose in 5% lactose solution was hydrolyzed.
RS 부호의 Erasure 복호시 오류정정성능평가에 관한 연구
鄭夏奉,李容圭 弘益大學校 科學技術硏究所 1996 科學技術硏究論文集 Vol.7 No.2
In this paper, we propose a product-code type error-correction coding format for 130 mmopto-magnetic discs using Reed-Solomon codes. Under the given random input byte error probability, we derive all the necessary theoretical formulas and do the performance analysis for the proposed ECC format in both cases of correction only and erasure decoding.
고속액체 크로마토 그래피에 의한 유제품 중의 당류정량 ( 糖類定量 ) 1 . 시판 발효유 음료의 유리당정량 ( 遊離糖定量 )
이용규,송명희,전순배 ( Y . K . Lee,M . H . Song,S . B . Chun ) 한국축산학회 1982 한국축산학회지 Vol.24 No.4
This experiment was conducted to investigate the distributions of free sugars in commercial liquid yogurts as well as the changes of their sugar contents during the storage at different temperatures by HPLC. The results obtained were as follows: 1. The optimal operating conditions of HPLC for the detection of free, sugars in sample were as follows: mobile phase, acetonitrile + water = 78+22 (v/v); flow rate, 2㎖/min.; the chart speed of recorder, 0.25 ㎝/minute. Under the above conditions, fructose, glucose, sucrose and lactose were not only seperated at base line within 16 minutes but also quantitated by peak height. 2. The extraction of sugars is sample by ethanol was much better than that of acetonitrile. 3. Fructose, glucose, sucrose and lactose were isolated from all products examined (A.B.C.D); among these, sucrose was largest in quantity, and the others wore is order of glucose, fructose and lactose respectively. 4. The changes in sugar content after 7 days` storage at different temperatures showed that glucose, fructose and sucrose were all decreased while lactose was almost unchanged.
송무영,오종민,박종오,이용규 忠南大學校 環境問題硏究所 1990 環境硏究 Vol.8 No.-
The variation of water quality for the Tae-Cheong Lake was analysed in relation to water quality 10 items for 9 station, when it compared June in 1988 with in 1990. According to the results of water pollution for each station the water quality showed the aspect of seriousness because of the eutrophication by total inorganic nitrogen (T-IN) and total phosphorus (T-P). Comparing with 1988, the NH₄-N decreased slightly, and the NO₃-N and the T-IN increased three times in 1990. The T-P quantity in 1990 appeared more increasment than 1988 because of the enclosed breeding nursery, Ockchon excretion, Sohwa stream and Keum River Resort.