저선량 감마선 조사가 왕겨의 항산화능에 미치는 영향

정석문,김정한,김동열,육홍선,변명우,이승철 慶南大學校 附設 基礎科學硏究所 2002 硏究論文集 Vol.16 No.-

왕겨에 200, 400, 600, 800 및 1000 Gy의 저선량의 감마선을 조사하여 항산화능의 변화를 관찰하였다. 총 페놀 화합물의 양은 무처리구의 경우 0.184 mM를 나타내었고, 200 Gy로 감마선을 조사하였을 때는 0.215 mM로 약간 증가함을 보였으나 이후 차츰 감소하였다. 전자 공여능은 무처리구에 비해 처리구의 경우 조사 선량별로 조금씩의 차이만 있을 뿐, 조사 선량에 대한 왕겨의 전자 공여능은 유의적인 큰 변화 없이 비슷한 활성을 보였다. Fe^2+-ions 킬레이팅 활성은 무처리구의 경우 68.25%를 나타내었으며, 200, 400, 600 및 800 Cy 에서는 각각 86.45, 85.61, 86.65 및 82.84%로서 무처리구보다는 증가함을 보였으나, 1000 Gy에서는 74.67%로 감소하였다. 지질 과산화 억제능은 무처리구에 비해 처리구는 약간의 증가를 보였으나 효과는 미비하였다. We studied the effect of small-dose of γ-irradiation to rice hull(RH) for its antioxidant ability. The RH was treated with 200, 400, 600, 800, and 1000 Gy of γ-ray at 70 Gy/min. Total phenol amount of unirradiated RH was 0,184 mM, after irradiation at 200 Gy it increased to 0,215 mM, while irradiation above 400 Gy up to 1000 Gy decreased that to unirradiated level. The electron donating ability of RH did not show significant change depend on irradiation. The chelating ability for Fe^2+ of unirradiated RH was 68.25 %, while that of 200, 400, 600 and 800 Gy irradiated RH showed 86.45, 85.61, 86.65 and 82.84 % respectively, but, 1000 Gy was decreased to 74.67 %. According to TBARS analyses, inhibition ability of lipid peroxidation by RH was not affected by γ-irradiation.

두 계통 잉어의 체성분 비교

강석중,최병대,정우건 國立統營水産專門大學 附設 水産科學硏究所 1994 수산과학연구소보고 Vol.5 No.-

보통잉어와 이스라엘잉어를 같은 조건에서 사육하였을 때 두 품종 간의 체성분 변화를 조사하기 위하여 식물성 플랑크톤이 많은 동일한 조건에서 사육한 보통잉어와 이스라엘잉어의 아미노산 및 지방산 조성을 분석하였다. 근육과 내장의 일반 성분을 분석한 결과 근육 중 조지방의 함량은 보통 잉어가 높았고, 회분은 이스라엘잉어가 높았으며 내장 중의 조지방의 함량은 이스라엘 잉어가 휠씬 높았으나, 회분의 함량은 비슷하여 지방의 함량에서 차이가 있었다. 구성 아미노산의 함량 및 패턴은 비슷하였고 주된 아미노산은 aspartic acid, glutamic acid, leucine 및 Iysine이었으며 전체 함량의 약 42%를 차지하였다. 또한 필수 아미노산이 차지하는 비율은 38~43%으로 높았다. 유리 아미노산 중 주된 성분은 taurine과 histidine이었으며 이들이 맛에 영향을 줄 수 있으나 두 품종 간에는 이들 함량이 비슷하였기 때문에 맛에는 차이가 없을 것으로 사료된다. 지방산 조성은 극성 지질 중 eicosapentaenoic acid(20:5n-3) 및 docosahexaenoic acid(22:6n-3)의 함량이 높아 건강 식품으로서의 가치가 있는 것으로 나타났다. The differences of nutritive components in muscle and viscera of local and Israeli strains of common carp were examined. The crude lipid content in muscle was higher in the local carp than in the Israeli carp, but that in viscera was lower in the local carp than in the Israeli carp. There was no appreciable differences of crude protein and ash in viscera between local and Israeli carp. The distribution patterns of the total amino acid profiles for both local and Israeli carp were very similar. The principal amino acids were aspartic acid, glutamic acid, leucine and Iysine. They were 42 percent of total amino acids. Taurine and histidine were important part of free amino acids. Eicosapentaenoic acid and docosahexaenoic acid content in the polar lipids were high in both strains.

전류형 능동필터를 위한 전압제어형 델타변조방식의 해석

신우석,최규하,정만규 건국대학교 산업기술연구원 1994 건국기술연구논문지 Vol.19 No.-

This paper describes voltage-controlled delta-modulation scheme for active power filters, which is to control the harmonic-compensating current indirectly by adjusting the capacitor voltage to be sinusoidal. The overall control system has two feedback loops : one is the outer proportional feedback for loop regulating the de current of the active filter and the other is the inner feedback loop for maintaining the ac current waveform to be sinusoidal, and to have zero power factor angle(i. e. unity power factor). The characteristics of the proposed scheme are investigated by digital simulation using ACSL.

체육교육의 존재지향적 전개를 위한 기본적 탐색

오정석,김달우 師範大學 體育硏究所 1993 서울大學校 體育硏究所論集 Vol.14 No.2

The purpose of this paper is to examine the current status of physical education so that its objectives and nature may be ascertained and an appropriate course of development might be found. According to Erich Fromme, the approach to life can be seen as either possession oriented or existence oriented. In the possession oriented mode even knowledge is seen as something which is possessed. Current physical education is based on the possession oriented approach. It is imperative then that physical education must reorient itself so that it might serve the existence oriented mode of being and facilitate the quest for the significance of this mode of being. As to the question of “Why is the recovery of this knowledge of existence inseperable from physical education?”. The reason lies in the fact that existence is experiential and physical education is the most fundamental of all forms of education when it comes to the experience of human existence. Physical activity is not an act of observation but requires direct participation. The thing which enhances this experience is the imagination. The imagination helps us take the experience of human movement to a higher level. The point which physical education must convey is that which the individucal personally discovers through direct experience. Therefore the essence of physical education can be summed up as “realization through movement.” In distinguishing the approach of physical education from other approaches, the following three points are salient; 1. Physical education emphasizes experiential physical activity. 2. The significance of expression is emphasized. 3. A physical way of thinking is emphasized. Be offerring the experience of physical activity to students, the beauty of human existence can be discovered and the significance of that kind of lifestyle might be realized. physical education then, in the midst of a diminishing sense of humanity seen in our mechanized civilization, will play a vital role in rediscovering this humanity and restoring its original from to mankind.

CDMA 모듈을 이용한 로봇 원격제어기 개발

김우식,윤수정,김응석 한라대학교 2006 論文集 Vol.9 No.-

In this paper, we study the robot controller design using the voice and data communication via CDMA(Code Division Multiple Access) mobile communication network We design the robot remote controller using the three methods, telephone call speech recognition, DTMF (Dual Tone Multiple Frequency) realization, SMS(Short Message Service) transmission/reception way via CDMA mobile communication network We investigate the validity and effectiveness of the proposed remote controller which applied to the mobile robot

농가용 저온저장고의 제어변수에 따른 성능평가

김석우,김성만,현명택,최동호,고정삼,박영하 제주대학교 공과대학 첨단기술연구소 2001 尖端技術硏究所論文集 Vol.12 No.2

The low temperature storage method has been used to increase the value of agricultural products by reducing quality deterioration and controlling respiration rate. The respiration rate of agricultural products depends on several factors such as temperature, moisture, gas composition and microbe inside the storage room. Among that temperature is the most important factor, which affects respiration rate and causes severe damage. The results obtained from these experiments are that electric consumption is decreased as setting temperature is decreasing and temperature deviation is increasing. In the ventilation experiment, the case ventilated four times a day(every six hours a day) with ten minutes operation each time, was inspected require as much electric consumption as non-ventilation case.

메기, Parasilurus asotus 사료의 최적 단백질 함량

강석중,정우건 國立統營水産專門大學 附設 水産科學硏究所 1994 수산과학연구소보고 Vol.5 No.-

새로운 양식 대상종으로 메기의 생산량 증가를 위하여 사료 중 최적 단백질 함량을 설정 하고자 실험한 결과는 다음과 같다. 평균 체중 약 7g되는 메기 치어의 체중은 사료중 단백질 함량 25%~55% 사이에서 단백질 함량이 높은 사료를 공급할수록 증가하였으나,근육 단백질의 증가는 45% 부근에서 최고치에 달하였으며,그 이상으로 사료 단백질 함량을 증가시켜도 변화가 없었다. 단백질 효율 및 정미 단백 이용율은 25% 부근에서 최고치에 달했지만 45% 부근에서 일시적으로 증가하여 단백질 함량 45% 실험구가 가장 양호한 것으로 나타났다. 따라서 멸치분을 단백질 원으로 하였을 때 메기 치어 사료의 최적 단백질 함량은 45%로 사료된다. Feeding trials were conducted for a test of the optimum dietary protein levels for the fingerling Korean catfish, Parasilurus asotus. The growth response was examined in terms of weight gain, feed coefficient, protein efficiency ratio and net protein utilization for 8 weeks at 23~27℃. Within a range of 25 to 55% crude protein levels in the diet, the body weight increased while the dietary protein level increased. Accumulation of protein in the body reached the maximum when the crude protein level in the diet was at 45%. These results indicate that the optimum dietary protein level of fingerling Korean catfish was about 45% when anchovy meal was used as the protein source.

脂質 종류에 따른 나일틸라피아의 성장 효과

강석중,최병대,정우건 國立統營水産專門大學 附設 水産科學硏究所 1994 수산과학연구소보고 Vol.5 No.-

양어 사료에 피드오일을 첨가하면 사료 효율이 향상된다. 나일틸라피아가 요구하는 필수 지방산의 종류를 알아보기 위하여 대두유 및 옥수수유 등의 식물유 및 오징어 간유, 어유를 사료에 첨가하고 사육하여 다음과 같은 결과를 얻었다. n-6 계열이 풍부한 식물유를 투여한 실험구가 n-3 계열의 어유를 투여한 실험구 보다 성장이 좋았으며 그 중에서도 대두유 첨가구가 가장 양호하였다. 총 지질중의 20:3n-9의 수준은 유지의 종류에 따라 현저한 차이는 없었으나 극성 지질중의 20:3n-9의 수준은 어유 및 오징어 간유 보다는 식물유구에서 낮게 나타났다. 틸라피아 사료에 첨가하는 지질로서는 n-6계열을 많이 포함하는 것이 적당할 것으로 나타났다. Experiments were conducted to find out suitable dietary lipids in the practical feed for Nile tilapia, Oreochromis niloticus. Soybean oil, corn oil, fish oil or cuttlefish liver oil was mixed in the diet and tested. The best weight gain and feed efficiency were obtained from the fish fed soybean oil or corn oil, both rich in 18:2n-6. But the growth rate of fish fed diet with fish oil or cuttlefish liver oil were inferior. The levels of 20:3n-9 in the total lipid were not different in all tested lipids, but that in the polar lipid of the fish oil or cuttlefish liver oil were lower than that in the soybean oil or corn oil. Thus, vegetable oil such as soybean oil or corn oil, rich in 18:2n-6, were suitable as dietary lipid for Nile tilapia. Unlike other fish species, fish oil or cuttlefish liver oil showed no essential dietary value for this species.

專門大學 不動産科 敎育課程 修正ㆍ開發에 관한 硏究

金淸祐,鄭郁浩,李圭熙,成錫駿 대구산업정보대학 1988 논문집 Vol.2 No.-

1) Object Individuality of real estate department and inner firmness of vocational education in junior college. 2) Method of study. The study of booket concerned with the curriculum of homeland and foreign land. Analysis and study of the question examination from the professors, the enrollments and graduates. 3) Conclusion ① Preferential organization on the subjects corresponded with the field after graduation; 「Architecture Construction, Equipment」 must be added with reguired subjects and 「Civil Procedure and Auction」ㆍ「E.D.P.S」 must be added with optional subjects. ② Reinforcement on the actual affairs and the actual training; Enlarging actual affairs on 「Real Estate Taxes」ㆍ「Real Estate Registration」ㆍ「Land Register」 and a new establishment on 「Spot Practice Subject」 ③ Exemption of the unnecessary and unessential subjects(ex, Real Estate Finance), which is too theoretical, also subdivided and repeated subjects.

Lidocaine, Thrombin, Epinephrine 의 항균효과

김진우,이동건,전혜선,김승준,김석찬,안중현,김치홍,권순석,김영균,김관형,문화식,신완식,송정섭,박성학 대한감염학회 2005 감염과 화학요법 Vol.37 No.6

목적 : 기관지내시경 검사에서 흔히 사용되는 국소마취제인 lidocaine과 내시경시 지혈목적으로 사용되는 thrombin과 epinephrine이 각종 균주에 미치는 항균효과에 대해 알아보고자 하였다. 재료 및 방법 : 균주는 가톨릭대학교 성모병원에서 2004년 3월부터 2004년 9월까지 임상검체 에서 동정된 S. aureus, S. pneumoniae, K. pneumoniae, P. aeruginosa 각각 42, 42, 42, 43주를 대상으로 하였다. Lidocaine, thrombin, epinephrine 감수성 검사는 National Committee for Clinical Laboratory Standards (NCCLS, 2002)의 기준에 따랐다. 결과 : Lidocaine은 S. aureus, S. pneumoniae, P. aeruginosa에서 MIC_(50), MIC_(90) 모두 20,000 ㎍/mL 이었다. K. pneumoniae는 각각 10,000 ㎍/mL이었다. Thrombin은 S. aureus와 P. aeruginosa에서 MIC50 500 lU/mL 과 MIC_(90) 500 IU/mL 이상이었고, K. pneumoniae에서는 MIC_(50)과 MIC_(90)이 모두 500 lU/mL이상이었으나 S. pneumoniae에서는 MIC_(50)과 MIC_(90)은 125 IU/mL이었다. Epinephrine은 K. pneumoniae, S. pneumoniae에 대한 MIC_(50), MIC_(90)가 모두 >500 ㎍/mL이었고, S. aureus와 P. aeruginosa에 대한 MIC_(50), MIC_(90)가 모두 500 ㎍/mL이었다. 결론 : 기관지 내시경 검사에서 흔히 쓰이는 lidocaine, thrombin, epinephrine 등의 약제들이 호흡기 질환의 흔한 병원균인 S. aureus, S. pneumoniae, K. pneumoniae, P. aeruginosa 균주들에 대해 항균 효과가 있을 수 있어 세균배양검사에 영향을 미칠 수 있겠다. Background : We performed this stody to find out about antimicrobial effect of lidocaine which is commonly used local anesthetic, and thrombin and epinephrine used for hemostasis during bronchoscopic procedures. Materials and Methods : The microorganisms that were cultured from specimens obtained during bronchoscopy were Staphylococcus aureus (n=42), Streptococcus pneumoniae (n=42), Klebsiella pneumoniae (n=42), and Pseudomonas aeruginosa (n=43) collected from St. Mary's Hospital, from March to Sep 2004 were used for susceptibity testing. Susceptibility to lidocaine, thrombin, and epinephrine were tested according to the National Committee for Clinical Laboratory Standards. Result : MIC_(50) and MIC_(90) of lidocaine for S. aureus, S. pneumoniae, P. aeruginosa were all 20,000 ㎍/mL and that for K. pneumoniae were 10,000 ㎍/mL. MIC_(50) and MIC_(90) of thrombin for both S. aureus and P. aeruginosa was 500 IU/mL and above 500 IU/mL, respectively; that for K. pneumoniae were all above 500 IU/mL and for S. pneumoniae they were 125 IU/mL, MIC_(50) and MIC_(90) of epinephrine for K. pneumoniae and S. pneumoniae were above 500 ㎍/mL; that for S. aureus and P. aeruginosa were 500 ㎍/mL. Conclusion : We observed possible antimicrobial effect of lidocaine, thrombin, and epinephrine in vitro against pathogens such as S. aureus, S. pneumoniae, K. pneumoniae, P. aeruginosa, which are common respiratory microorganisms. The use of these agants could affect the result of bacterial culture.