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잎파래 (Enteromorpha linza)의 葉體無菌化와 元形質體 培養
裵光星,宋相鎬,鄭圭和 慶尙大學校 1991 論文集 Vol.30 No.2
잎파래(Enteromorpha linza) 葉體의 無菌化와 葉體에서 分離한 原形質體의 培養에 關한 몇가지 條件을 決定코자 하였다. 洗劑로 葉體의 附着微生物을 除去하기 爲해서는 0.1%液으로 15∼20分間 洗 하는 것이 效果的이었으며, 組織內部의 微生物은 1% KI-I2液으로 2.5∼5分間 處理하여 抗生劑 2%가 添加된 培地함으로서 除去가 可能하였다. 葉體의 原形質體는 2% AAP가 添加된 各種酵素液으로 容易하게 분리할 수 있었다. 原形質體의 無菌培養을 爲한 抗生物質의 添加濃度는 1.5%程道가 適當하였으며 照度는 2000lux以上일 境遇培養에 큰 影響을 미치지는 않는 傾向이었다. Basic studies for obtaining the axenic tissue, isolation and culture of protoplasts of Enteromorpha linza have been attempted. Treating with 0.1% detergent for 15-20mins were effective for cleaning the collected tissue. Exposure the tissue to a 1% KI-I2 solution for 2.5-5.0 mins subsequently culture them in the medium containing 2.0% antibiotic materials were good for inhibition of bacterial growth as well as enzyme solutions composed of abalone acetone powder, cellulase R-10, and driselase. The 2.0% antibiotic medium was good for the suppression of bacterial growth in protoplasts culture. The development of protoplasts was not largely influenced by the light strength and photoperiods.
입력성형기법을 이용한 변위증폭형 마이크로스테이지 잔류진동제어
배규현,송은혜,강중옥,홍성욱 한국공작기계학회 2009 한국공작기계학회 춘계학술대회논문집 Vol.2009 No.-
This paper presents a result of application of input shaping to a micro-stage with a displacement amplification mechanism. The stage considered in this study is subjected to severe residual vibration in its lever mechanism to amplify displacement. The system dynamics exhibit some nonlinear nature due to the hysteresis of the PZT actuator. Input shaping method is successfully applied to the system so as to eliminate residual vibration from the system. The experimental study also shows that staircase input is useful to avoid the performance degrade by the nonlinear characteristics.
배명효,김규열 世明대학교 한의학연구소 2002 韓醫學硏究所 論文集 Vol.4 No.-
This study was undertaken to define the effect of Crataegi Fructus on the norepinephrine-induced arterial contraction and the mechanism of Crataegi Fructus-induced relaxation. In order to investigate the effect of Crataegi Fructus on contracted rabbit carotid arterial strips, transverse strips with intact or damaged endothelium were used for the experiment using organ bath. To analyze the mechanism of Crataegi Fructus-induced relaxation, Crataegi Fructus extract infused into contracted arterial strips induced by norepinehrine after treatment of indomethacin, N_(t) nitro-_L-arginine or tetraethylammonium chloride. Crataegi Fructus relax arterial strip with endothelium contracted by norepinephrine, but in the strips without endothelium, Crataegi Fructus-induced relaxation was significantly inhibited. The endothelium-dependent relaxation induced by Crataegi Fructus was decreased by the pretreatment of N_(t) nitro-_L-arginine, but it was not observed in the strips pretreated with indomethacin or tetraethylammonium chloride. We suggest that Crataegi Fructus may influx of extra-cellular Ca^++ through the formation of nitric oxide in the vascular cells.
Image Analyzer를 이용한 고추장 숙성 예측에 관한 연구
배철섭,한규홍,김병용 경희대학교 생명자원과학연구원 2000 硏究論文集 Vol.21 No.-
고추장을 각 저장온도에서 숙성하였을 때 환원당과 아미노태 질소는 증가하였고 점도, 색도, 전분 입자 수는 감소하였다. 높은 저장온도에서 모든 품질인자들의 증가와 감소가 빠르게 진행되었으며, 점도의 경우 저장기간이 끝난 후 온도에 따른 차이를 보이지 않았다. 점도, 색도, 전분 입자 수에 대한 반응 속도는 1차 반응을 나타내었으며, k값은 20℃보다는 35℃에서 높게 나타났다. 이러한 결과는 20℃보다는 35℃에서 숙성이 빠르게 일어남을 보여주는 결과이다. 고추장의 숙성에 있어서 단기간에 숙성을 필요로 할 경우 고온에서 숙성하는 것이 좋으나, 장기적으로 숙성을 원할 경우에는 상온에서 숙성하는 것이 좋을 것이라고 생각된다. 영상분석을 이용한 입자수 측정결과와 점도, 색도 측정간의 결정계수(r^2)가 상당히 높은 값으로 나타나 영상분석을 통한 저장 수명 예측을 가능하게 하였다. The fermentation degree of kochujang during storage at different temperature was predicted by viscosity, color and particle numbers determined by an image analyzer. Reducing sugars and ammo-nitrogen contents of kochujang were increased during storage, whereas color (lightness, redness, and yellowness) of kochujang was decreased at all storage temperatures. The difference in viscosity at each storage temperature was less as storage time was increased. Above parameters at various storage times followed the first oder reaction pattern and the rate constant (k) was mostly dependent on storage temperature. The relationship of particle number and storage time of the Kochujang was applied to a simple regression model, to be able to predict fermentation time.
배규현,홍성욱,박상원 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-
Input shaping is widely accepted to be a useful tool for removing residual vibration in cranes. The UMZV(unity magnitude zero vibration) input shaper is often employed for cranes driven by on-off type motors. However, the UMZV input shaper makes the cranes move slightly further than expected from the original command while it can remove the residual vibration out of the cranes. This paper deals with a method of input shaping scheme which can compensate the position inaccuracy as well as remove the residual vibration of cranes. The proposed method is illustrated through a numerical simulation.
조규판,원재선,김동희,노채균,배영호 영남대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.28 No.1
In this paper, we propose the high frequency resonant inverter of the time sharing type which has the effects that the duty cycle of each elements and the thermal loss can be reduce. The analysis of the proposed circuit is described generally by using the normalized parameters. Also, the principle of basic operation and the characteristics of drive were estimated by the switching frequency and the load parameters. And we got the data for designing by the characteristic values obtained at the estimate of characteristic. At the same time, the example of the design's method was proposed and the waveforms of simulation were compared with theoretical waveforms. It is certain that the proposed circuit will be used and expanded in the high frequency power supplies like induction heating systems.
김규원,배종렬 경북대학교 사회과학연구소 1992 社會科學硏究 Vol.8 No.-
This study examines the relationships beteween social strata and children's socialization in Taegu City. Taking advantage of theories of B. Bernstein(1973) and M. Kohn(1977), two researchers developed their own hypotheses as follows. (1) The upper strata are socializing their children for the purpose of cultivating one's talent in a democratic/self-determined way : (2) The middle strata demand their children to be achievementoriented people in an authoritarian/regulated way : and (3) The lower strata are socializing their children either in a laissz-faire way or in a threatening way in order to make them self-contented. The survey results did not neatly fit into the researchrs' hypotheses. Regardless of social strata, most parents want their children to be polite and courteous. It appears that there does not exist a class-specific and consistent way of socializing children.