• Journal of Food Hygiene and Safety
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• v.19 no.1
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• pp.25-30
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• 2004

This study was conducted to investigate effect of mungbean sprout and soybean sprout against the growth of spoilage microorganism (Bacillus subtilis, Bacillus cereus, Pseudomonas fluorescens, and Listeria monocytogenes). After blanching at different conditions, the viable cells of the spoilage microorganisms were increased with storage time, but the viable cells were almost same after treating with either mungbean sprout or soybean sprout. The viable cell population in minimal broth treated with filtrate of mungbean sprout was higher than that of soybean sprout after 24 hr. However, the growth of spoilage microorganism in filtrate of mungbean sprout and soybean sprout was depending upon strain type. During incubation for 72 hr at $25^{\circ}C$, the color change of mungbean sprout was appeared moderately, but in soybean sprout it was appeared clearly at 24 hr. These results indicate that the effect of mungbean sprout and soybean sprout against growth of spoilage microorganism was not different.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 1999.11a
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• pp.103-105
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• 1999

본 논문은 입력전압 파형을 각각 같은 크기의 정현파, 구형파, 삼각파로 변화시켰을 때, 형광램프의 시동특성ㅇㄹ 어떻게 달라지는 지에 대해 비교 설명한 논문이다. 구형파가 입력으로 주어질 때 램프의 시동특성은 현저하게 떨어져, 시동전압이 크게 상승하는 것을 볼 수 있었으며, 삼각파의 경우는 대체적으로 정현파 입력과 거의 동일한 특성을 나타냈다.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.371-372
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• 2000

방선균은 생리활성물질의 탐색원으로서 많은 주목을 받고 있는 미생물이지만 현재까지 이용되어온 균주의 대부분은 육상의 토양에서 분리된 것들이고, 해양의 방선균에 관하여서는 아직까지 거의 연구되지 않은 분야이다. 미생물의 서식지로서 해양의 환경조건은 육상과 현저히 다르기 때문에 해양에 있어서 방선균의 microflora는 육상과는 상당히 다를 것으로 생각되어지며, 또한 연안해역에 존재하는 방선균 중에는 육상에서 유입된 담수 등으로 인하여 육상의 토양으로부터 유래된 방선균도 많은 것으로 알려지고 있다. (중략)

• 전기의세계
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• v.23 no.6
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• pp.33-35
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• 1974

최근 수년간의 조명공학분야는 눈부신 발전을 하였다. hard ware관계로는 각종의 새로운 전등들이 각국에서 경쟁하다 싶이 개발되었다. 효율, 수명 및 동정등이 종래의 박열전구에 비하여 현저하게 개선된 할로겐램프, 연색성과 효율이 종래의 수은등보다 우수한 메탈할라이트램프, 효율이 높은 고압나토륨램프등의 개발은 이미 실용화되고 있다. 한편, 이들 광원을 이용하는 시견원조기술로서의 Software관계로서는, 명시론, 색채론등 측광량, 측정치를 기준으로 한 시각생리, 시각심리적 분야로부터 시각정보공학이란 분야로 발전되었다. 또한 조명계산 및 설계나 조명시설의 분야는 인간성존중을 바탕으로한 시각환경시스템분야로 추진되고 있다. 이와같은 각국의 눈부신 발전에 반하여 우리나라 조명공학분야의 현실은 답보적이며 종래의 것들을 추종하는데만 급급한 상태에 있다고 말할 수 있다.

• Journal of the Korean Society of Safety
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• v.8 no.4
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• pp.223-230
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• 1993

각종 산업에 있어서 분체는 여러가지 형태로 다량 사용되고 있으며 분체 취급시 정전기에 의한 폭발, 화재 등 많은 재해가 발생되고 있다. 분진폭발은 과거에 탄광에서 탄진폭발에 의한 것이 대부분 이었지만 최근 플라스틱 공업, 유기합성 공업, 분말 공업 등 원재료와 제품을 분체로 취급하는 공정이 증가하면서 분진폭발 사고가 현저히 증가하였다. 그러나 현재 이러한 재해 방지를 위한 충분한 검토 및 대책이 잘 이루어지지 않고 있는 실정이다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.7 no.1
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• pp.45-56
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• 1997

본 논문에서는, 무선 통신시스템에 적용 가능한 (255,215) BCH부호의 효율적인 복호 알고리즘을 제안하고, 이를 이용하여 5중 에러 정정 부호기 및 복호기를 설계하였다. peterson의 복호기보다 곱셈기, X-or 게이트의 수가 현저히 줄어들었을 뿐만 아니라 역원계산기가 필요 없음이 입증되었고, VHDL을 사용한 컴퓨터 시뮬레이션을 통해서 그 타당성을 검증하였다.

• Journal of Nutrition and Health
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• v.48 no.4
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• pp.319-326
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• 2015

Purpose: Borage oil (BO) and safflower oil (SO) are efficacious in reversing epidermal hyperproliferation, which is caused by the disruption of epidermal barrier. In this study, we compared the antiproliferative effect of dietary BO and SO. Altered metabolism of ceramide (Cer), the major lipid of epidermal barrier, was further determined by measurement of epidermal levels of individual Cer, glucosylceramide (GlcCer), and sphingomyelin (SM) species, and protein expression of Cer metabolizing enzymes. Methods: Epidermal hyperproliferation was induced in guinea pigs by a hydrogenated coconut diet (HCO) for 8 weeks. Subsequently, animals were fed diets of either BO (group HCO + BO) or SO (group HCO + SO) for 2 weeks. As controls, animals were fed BO (group BO) or HCO (group HCO) diets for 10 weeks. Results: Epidermal hyperproliferation was reversed in groups HCO + BO (67.6% of group HCO) and HCO + SO (84.5% of group HCO). Epidermal levels of Cer1/2, GlcCer-A/B, and ${\beta}$-glucocerebrosidase (GCase), an enzyme of GlcCer hydrolysis for Cer generation, were higher in group HCO + BO than in group HCO, and increased to levels similar to those of group BO. In addition, epidermal levels of SM1, serine palmitoyltransferase (SPT), and acidic sphingomyelinase (aSMase), enzymes of de novo Cer synthesis and SM hydrolysis for Cer generation, but not of Cer3-7, were higher in group HCO + BO than in group HCO. Despite an increase of SPT and aSMase in group HCO + SO to levels higher than in group HCO, epidermal levels of Cer1-7, GlcCer-A/B, and GCase were similar in these two groups. Notably, acidic ceramidase, an enzyme of Cer degradation, was highly expressed in group HCO + SO. Epidermal levels of GlcCer-C/D and SM-2/3 did not differ among groups. Conclusion: Dietary BO was more prominent for reversing epidermal hyperproliferation by enhancing Cer metabolism with increased levels of Cer1/2, GlcCer-A/B, and SM1 species, and of GCase proteins.

• Journal of Veterinary Clinics
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• v.28 no.5
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• pp.479-485
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• 2011

The cardiopulmonary responses during total intravenous anesthesia (TIVA) between remifentanil/propofol infusion and remifentanil/ketamine infusion in dogs were compared. Fourteen healthy adult beagle dogs were premedicated with acepromazine (0.1 mg/kg, SC) and medetomidine (20 ${\mu}g$/kg, IV), and anesthetized for 3 hr with remifentanil (0.5 ${\mu}g$/kg/min)/propofol (loading dose: 1 mg/kg, CRI: 0.3 mg/kg/min) CRI (group 'P') or remifentanil/ ketamine (loading dose : 5 mg/kg, CRI: 0.1 mg/kg/min) CRI (group 'K'), respectively. Hemodynamics, blood gas analysis and behavioral changes during recovery were measured. The level of anesthesia was determined by toe-web clamping test. The level of surgical anesthesia was maintained throughout the experiment in both groups. Systolic arterial pressure, mean arterial pressure, $PaO_2$ and $SpO_2$ in group 'K' were significantly higher than in group 'P', and were maintained near the normal ranges. In addition, $PaO_2$ in group 'K' was significantly lower than in group 'P'. However, diastolic arterial pressure, heart rate and respiratory rate were not significantly differed. Mean extubation time from the end of infusion was significantly reduced in group 'K', but mean sitting time was significantly reduced in group 'P'. Mean head-up time and mean walking time were not significantly differed. In group 'K', brief muscle rigidity, head waving and licking during recovery were observed. In conclusion, infusion rate of ketamine (0.1 mg/ kg/min) with remifentanil (0.5 ${\mu}g$/kg/min) is an appropriate for obtaining the surgical plane of anesthesia. These results showed that group 'K' had better cardiopulmonary function than group 'P'. That is, remifentanil/ketamine CRI is better TIVA protocol than remifentanil/propofol CRI for 3 hr surgery.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.1B
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• pp.1-7
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• 2004

Increase of internet users and new type of applied traffic such as game, news, distributed computing, online image conference, and real time audio and video have leaded to demand for more bandwidth for each application. This algorithm represents a complex optical exchanger having typical wavelength switching function and time-slotted transmission function. Performance assessment of the proposed OXC (Optical Cross connect) sttucture defines LFS (Limit Frame Size) and VFS (Variable Frame Size) for classification by packet type and calculates the channel effect and loss probability depending the demanded bandwidth by access node increase. Optical exchanger in this type of structure can guarantee future network expansion as well as decrease of frame collision resulted from node increase.

• Journal of the Earthquake Engineering Society of Korea
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• v.1 no.2
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• pp.59-68
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• 1997

Seismic responses of the Hualien large scale seismic test model on a layered soil site are estimated for three recorded earthquakes with different level of peak acceleration using two different approaches of soil-structure interaction analysis. The analysis results are then compared and evaluated with the recorded. The method adopted for the analysis is based on substructuring method using a lumped parameter model in both the frequency and time domain. The study results indicate that the proposed method can reasonably estimate the earthquake responses of a soil-structure interaction system of r engineering purposes if the techniques of defining input motion and modeling of the backfilled soil are prudently selected.