• 농약과학회지
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• 제8권4호
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• pp.272-279
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• 2004

1,2-Diaminopropane을 출발물질로 하는 원예용 살균제 propineb의 제조공정을 최적화하였다. 독성 부 반응물인 1,2-propylenethiourea의 발생을 억제하기 위하여 상전이 촉매를 사용하였으며, 이때 product의 수율과 순도가 획기적으로 향상됨을 확인하였다. phosphonium 염계 상전이 촉매인 tetraphenylphosphonium bromide를 사용한 경우 생성물의 순도 96%, 수율 95% 및 부반응물 함량 1.7%로 가장 좋은 결과를 보였다. 또한 propineb의 현수성과 수화성을 개선하기 위하여 AES를 수화성 계면활성제로, APS를 현수성 계면활성제로 사용하였으며, 이들의 최적 조건은 AES $3.1\sim4.0%$, APS $4.0\sim5.0%$이었다.

• 한국수정란이식학회지
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• 제25권2호
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• pp.117-125
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• 2010

Several cloned animals have been produced using somatic cell nuclear transfer (SCNT) and have interested in producing the transgenic cloned animals to date. But still its efficiency was low due to a number of reasons, such as sub-optimal culture condition, aberrant gene expression and nuclear reprogramming. The purpose of this study was to analyze gene expression pattern in in vitro fertilized (IVF) or SCNT pre-implantation embryos. IVF- or SCNT-embryos were cultured in media supplemented with different proteins (FBS and BSA) or energy sources (glucose or fructose). Blastocysts from IVF or SCNT were analyzed using semi-quantitative RT-PCR in terms of developmentor metabolic-related genes. Culture medium supplemented different proteins or energy sources had affected on the expression of developmental or metabolic genes in the SCNT blastocysts.

• Korean Journal of Acupuncture
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• 제30권3호
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• pp.171-177
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• 2013

Objectives : The purpose of this study is to investigate the mechanism of Cosmetic Acupuncture through reinterpretation of anatomy and physiology. Methods : The causes of wrinkle increases and rapid aging of facial skin were studied and the theoretical system of Cosmetic Acupuncture treatment was analyzed through anatomy and physiology reinterpretation. Results and Conclusions : An increase in wrinkles and rapid aging of facial skin is caused by xerosis. Skin condition represents the condition of subcutaneous muscle. The reason why skin becomes easily dry is the heat produced by craniofacial part. Craniofacial part always generates lot of physiological fever because of the muscles. This physiological fever is produced from the muscles that are responsible for maintaining skull suture, controlling the movement of temporomandibular joint, maintaining head and neck posture. Controlling this fever is the crux of Cosmetic Acupuncture mechanism. These muscles correspond to Foot Taeyang meridian-muscle, Foot Soyang meridian-muscle and Foot Yangmyung meridian-muscle. Cosmetic Acupuncture is effective for preventing facial skin from aging and wrinkle increase by mechanical stimulus on facial muscles, and for controlling craniofacial part meridian-muscle system producing the heat.

• 농업과학연구
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• 제39권2호
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• pp.195-202
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• 2012

This study was examined the optimization of processing conditions for taste-assurance factors of boiled Korean native chicken (KNC) through response surface methodology. The effects of two independent variables, including heating time ($X_1$) and water volume ($X_2$), were investigated using central composite design. Hypoxanthine content, lipid oxidation, texture, and sensory results were chosen as dependent variable. Results showed high reliability on hypoxanthine and texture property in leg meat (not breast meat) of boiled KNC. Statistical modeling revealed that 3.5 folds of added water (v/w) based on chicken weight and 73.5 min of cooking time was the optimum for producing characteristic taste and textural properties from the leg meat of KNC.

• 한국미생물·생명공학회지
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• 제21권1호
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• pp.1-5
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• 1993

춘천시 근교의 토양으로부터 glutathione 생산균주를 분리, 동정하고 glutathione 생산 최적조건을 검토하였다. 분리된 균주는 동정을 행한 결과 Candida sp.로 판단되었다. Glutathione 생산을 위한 Candida sp의 배지조성은 fructose 1.0, yeast extract 4.0, NaCl 0.04, thiamine-HCl5{\mu}g/ml$ 및 L-cysteine 0.04 이었으며 온도는 $25^{\circ}C$, pH 6.0에서 36시간 배양하였을 때 glutathione 생산이 가장 좋았다. Glutathion 생산을 위한 최적배지에서 Candida sp. 균주에의한 glutathione 생산량은 $92{\mu}g/ml$로 YM 배지보다 약 2.5배 정도 증가하였다.

• 복식문화연구
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• 제15권4호
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• pp.702-712
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• 2007

The purpose of this study was to understand the current trend with regard to the material of jeans and the making method of jeans pattern and the characteristics of washing processing through the overall production status of jeans in casual brands and to offer the basic data for producing the high efficient jeans. The results were as follows. According to the survey of production status of jeans in casual brands, the fabric mixture was highest in the order of non-stretch denim 100% cotton, stretch denim cotton/spandex mix and denim with $1{\sim}2%$ weft direction spandex mix. The most frequently used processing method for denim was in the order of normal finishing, mercerization finishing, soft finishing and pigment finishing. The most frequently used method of washing finishing for jeans was in the order of forming by embossing washing, bio stone washing, normal washing, bio washing, and bio stone bleach washing. The average shrinkage was higher on waist circumference and pants length of warp direction rather than hips circumference, thigh circumference, hem circumference of weft direction.

• 한국잠사곤충학회지
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• 제46권1호
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• pp.32-37
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• 2004

1. 생사의 종류가 명주실 현에 미치는 영향을 구명하기 위하여 시험한 결과 강력과 신도가 각기 다른 4가지의 생사로 만든 명주실 현은 강력과 신도는 생사 때보다 그 차이가 줄어들어 생사종류에 따른 차이는 없었다. 2. 명주실 현의 연고정 온도 시험에서 현의 강력은 80∼11$0^{\circ}C$ 사이에서는 차이가 적었으나 12$0^{\circ}C$에서 저하되었고 절단하중 70%에서의 절단까지의 반복회수는 11$0^{\circ}C$까지는 큰 차이가 없다가 12$0^{\circ}C$에서 현저히 저하되었으므로 이러한 물성을 감안하면 11$0^{\circ}C$ 20분정도가 적당하였다.

• 한국수소및신에너지학회논문집
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• 제11권4호
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• pp.149-159
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• 2000

This paper is concerned with the performence of a steam reformer for 25kW class MCFC, which is compared with the theoretically calculated results at various operating conditions. The theoretical $H_2$ production amount and $CH_4$ conversion rate are calculated with variations of temperature and steam/carbon (S/C) ratio using fortran program, and the actual values are measured from flowmeter and gas chromatography. As a result of the comparison of theoretical and actual values, the theoretical $H_2$ production amount is calculated by $24.4m^3/hr$ at the normal operating condition(LNG $9m^3/hr$, S/C ratio 5, absolute pressure $2.77kg/cm^2$, $610^{\circ}C$), but the actual production amount is only $19.4m^3/hr$, which is 79.5% of the theoretical value. Nevertheless, at the normal operating condition, the reformer for 25kW class MCFC performed well for a 2,100 hr long run operation, constantly producing $H_2$.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 B
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• pp.1167-1169
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• 1996

As electrical discharge machinery(EDM) is industrial process which is manufactured by discharge energy, by producing discharge, EDM process finished material at the little micrometer air gap. Especially, EDM is used for the characteristic of heat-resisting material, it puts to use air-space industrial element, confusing shaping material such as jet engine, rocket elements. Working performance. is changed by environment of working, discharge current voltage and duration of discharge pulse. Evaluation of performance working is work speed, clearance smoothing of product surface, wasting of pole. In this paper, this machine is compensated by adaptive controller which corrects the weak points of classical machine which is observed and operated working condition by user in hands. The previous purpose is main object in this thesis. The adaptive controller automatically detect abnormal condition and working conditions. To improve performance, surface smoothing and working speed, the adaptive controller uses fuzzy control strategy. To evaluate performance, this controller is implemented by microprocessor i80c196 and is applied real experimental machine.

• 상하수도학회지
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• 제27권5호
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• pp.621-629
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• 2013

Since algae had been issued an environmental problem, water blooms, deepened due to increase of retention water basin in Korea as well as a biomass resource for producing biofuel, this study conducted a series of experiments for Spirulina platensis using the flotation process with micro-bubble. To elevate utilization of collected-algae, this study focused on omitting or minimizing coagulant's doses as changing a cultivation period and condition affected on physical property change of algae. Two coagulants, PAC and Chitosan, were used to test the collecting rate of algae and the result found no difference between two rates. For flotation experiments without adding the coagulant, dried algae weight (passing 14 days after cultivation for 20 days) detected high separation efficiency 98.2 % and it (passing 7 days after long-term cultivation for 28 days) presented good separation efficiency 91.9 %. Chlorophyll's separation efficiency showed a similar tendency with the case of the dried algae weight. In endogeny conditions, a light source and a carbon source were not considerably affected on the flotation separation efficiency. Thus, this study confirms that algae biomass may be collected without the coagulant during the endogeny condition period after enough cultivation time, 3 weeks.