• 한국의류학회지
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• 제25권3호
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• pp.569-576
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• 2001

The purpose of this study is to develop multifunctional fibers by sticking cinnamon microcapsules on cotton knit. The prepolymer was made from urea-formaldehyde for usage of wall materials of microcapsules. The parameters for adoptable condition are 5000rpm of agitation speed, 1% of dispersions concentration according to the observation with SEM and particle analyzer. The Antimicrobial activity of cotton knit treated with capsule was increased greatly and maintained on the laundering cycle.

• 한국식품영양학회지
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• 제11권6호
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• pp.606-611
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• 1998

For waste recyle, we were investigated on Gardenia blue color production using Gardenia by-product by Bacillus subtilits. Optimum conditions for producing blue pigment were found to be 30$^{\circ}C$, initial pH 6.5, glucose as a carbon source 3% and yeast extract as a nitrogen source 0.5%, respectively. Optimum conditions for fermentor culture were agitation speed 400rpm, aeration 2 vvm and inoculum 5%. The optimum perculture time for inoculum was 20 hrs for blue pigment production.

• Journal of Microbiology
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• 제34권1호
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• pp.101-104
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• 1996

The influences of culture parameters on the decolorization of anthron-type dye, Remazol brilliant blue R(RBBR) by Pleurotus ostreatus were studied in defined media. In the decolorization, 1-10 mM nutrient nitrogen and 40 mM glucose were effective whereas agitation and Tween 80 were not suitable. The decolorization occurred and the activity of extracellular peroxidase was detected during the stationary phase.

• 한국표면공학회지
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• 제19권2호
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• pp.44-50
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• 1986

Effects of cathodic overvoltages on the electrodeposition of lead from electrolyte containing lead chloride, ammonium acetate and sodium succinate was investigated at 20$^{\circ}C$. The use of organic additives, phenol and gelatin was found effective to inhibit the growth of dendritic crystals. At the carthodic overvoltages higher than 0.2V, the lead deposit becames less compact even in the presence of organic additives. The applications of agitation and pulse current promoted compact and shiny deposits.

• 한국해안해양공학회:학술대회논문집
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• 한국해안해양공학회 1993년도 정기학술강연회 발표논문 초록집
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• pp.98-100
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• 1993

When we want to reproduce transport of sediment in the fields in a laboratory, we have to establish a similitude law. A similitude law is necessary when sediment transport of field is reproduced in a laboratory. When we apply our knowledge about sediment transport obtained in the laboratory to predict sediment transport in the field, we can apply Froudian law to a fluid motion that becomes agitation agency and transporting flow of sediment movement. (omitted)

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2007년도 추계학술대회 논문집
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• pp.83-84
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• 2007

Damascene 공정을 이용하여 80nm급의 trench 패턴 내에 구리 배선 형성을 위해 무전해 구리 도금법을 이용하였다. 화학 반응으로 진행되는 무전해 도금법에 의한 구리이온의 초미세 패턴 내 환원 과정에 구리 이온의 물질 전달과정이 구리 도금층의 표면 특성과 superconformality에 미치는 영향을 살펴보았다. 회전 전극에 고정된 칩의 회전 속도가 증가함에 따라 구리 도금층의 비저항이 감소하고, trench 내 균일 도금성이 향상되는 것으로 나타났다.

• 한국표면공학회지
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• 제14권4호
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• pp.209-214
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• 1981

Electrolytic recovery of gold and silver from diluted solutions has at first been applied nearly 100 years ago. Compared with other recovery techniques electrolytic treatment offers several advantages. But to achieve high space-time yields special constructions of electrolytic cells for improved mass transfer are necessary. Ex-tended cathode surface areas and vigorous agitation are important features. Gold and silver recovery by use of newly developed electrolytic cell constructions - rotating tubular bed reactor and impact rod reactor - has been described. Calculations based on industrial application during several years are confirming that electrolytic recovery of precious metalss from diluted solutions has been operated in a very economic way.

• Journal of Microbiology and Biotechnology
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• 제10권3호
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• pp.367-374
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• 2000

The composition of dissolved gases and nutrients in a liquid medium were determined for establishment of the optimum conditions for in vitro culture of Helicobacter pylori. A microaerobic condition facored by the organism was prepared by adjusting the partial pressure of the gas, agitation speed, and viscosity of the medium. The gaseous concentrations were controlled by utilizing CampyPak Plus that reduced oxygen while augmenting carbon dioxide. Agitation of the broth facilitated the oxygen transfer to the cells, yet inhibited the growth at high rates. An increase of viscosity in the medium repressed the culture although this variable was relatively insignificant. The chemical constituents of the liquid broth were examined to establish an economic model for H. pylori cultivation. The microbe required a neutral pH for optimum growth, and yet was also able to proliferate in an acidic condition, presumably by releasing the acidity-modulating enzyme, urease. Cyclodextrin and casamino acid were investigated as growth enhancers in place of serum, while yeast extract unexpectedly inhibited the cells. A low concentration of glucose, the unique carbon source for the organism, increased the cell density, yet high concentrations resulted in an adverse effect. Under optimally dissolved gas conditions, the cell concentration in brucella broth supplemented with serum substitutes and glucose reached $1.6{\times}10^8$ viable cells/ml which was approximately 50% higher than that obtained in the liquid medium added with only cyclodextrin or serum.

• 한국버섯학회지
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• 제6권1호
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• pp.27-31
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• 2008

현재까지 연구로는 흰목이 균사체에서 EPS 생산과 균사생장에 대한 적정 정치배양 조건이 연구되었다. 본 연구로부터 탄소원과 질소원의 처음 농도, 균사 형태와 발효조의 타입의 선택은 흰목이 균사체 EPS 생산에 가장 영향을 미친다는 것을 알게 되었다. 이들 결과는 공기주입식 반응기에서 EPS 생산성은 진탕탱크 반응기 보다 더 높았다는 점을 증명하였다. 또한 흰목이 균사의 정치배양의 생리적 생장에 대한 지식은 아직도 제한적이다.

• 한국지반환경공학회 논문집
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• 제15권8호
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• pp.45-50
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• 2014

하수관 내에서의 하수와 미생물의 반응에 대한 실험은 이미 매설된 하수관에 적용할 경우 실험조건의 변화가 제한적이며 실험시간에도 한계가 있다. 본 연구에서는 이러한 하수관 내에서의 하수와 미생물의 반응에 대하여 DO를 제한 조건으로 설정하였을 경우, 실험실 내에서 실험반응조를 통해 재현하는 방법에 대하여 연구하였다. 하수관 내에서의 DO 농도는 기상 중의 산소가 하수 내로 이동하는 재포기현상에 의해 조절된다. 이러한 현상을 이용하여 임의로 실험반응조에서 하수관 내의 유하조건을 조절하고 재포기현상을 재현하여 유하조건과 재포기계수와의 상관관계를 얻을 수 있으며, 교반강도(속도경사)에 따른 재포기계수와 하수관거에서의 유하조건에 따른 재포기계수의 상관관계를 통해 동일한 재포기계수 값을 갖는 교반강도와 유하조건을 설정할 수 있다. 이러한 결과를 통해 재포기계수를 제한인자로 설정하여 실험을 실시할 경우 하수관거에서의 상황을 실험반응조를 통해 재현할 수가 있었다.