• Applied Biological Chemistry
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• 제41권6호
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• pp.426-430
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• 1998

Danish pastry 제조 공정에서 Pastry 마가린 함량과 결 수 변화가 Danish pastry의 품질을 결정하는 완제품의 수분 함량, 굽기 손실, 부피, 경도, maximum weight, 및 vapor action에 미치는 영향을 조사하였다. 제품의 수분함량은 동일한 pastry 마가린 함량에서 결 수가 증가할 수록 미세한 증가를 보였고 동일한 결 수에서 pastry 마가린의 함량이 증가할 수록 제품의 수분 함량은 감소하였다. 제품의 굽기 손실은 동일한 pastry 마가린 함량에서 결 수가 증가할 수록 감소하였고, 동일한 결 수에서 pastry 마가린 함량이 증가할수록 제품의 굽기 손실은 증가하였다. 부피의 경우 30%에서는 18결, 50%에서는 27결, 70%에서는 36결, 90%, 110%에서는 48결이 최대의 부피를 얻었다. 경도와 maximum weight는 동일한 결 수에서 pastry 마가린 함량이 증가할 수록 감소하였고 동일한 pastry 마가린 함량에서 결 수가 증가할 수록 경도와 maximum weight는 감소하였다. Vapor action크기가 $9{\sim}16\;mm,\;17{\sim}24\;mm$부근 일 때 제품의 부피가 가장 크고 vapor action수와 부피는 비례하였다. 제품의 상품화에 가장 적합한 vapor action크기는 $9{\sim}24\;mm$가 가장 적절한 것으로 나타났다.

• Applied Biological Chemistry
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• 제46권4호
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• pp.311-316
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• 2003

Puff pastry의 제조 공정에서 pastry 마가린 함량과 적층 수의 변화가 제품의 수분 함량, 굽기 손실, 부피, vapor action 등에 미치는 영향을 조사하였다. Pastry 마가린 함량이 90%로 동일하고 적층 수가 27결일 경우 $10.8{\pm}0.6%$의 수분 함량을 나타냈으며, 1024결일 경우 $16.7{\pm}0.3%$로 적층 수가 증가할수록 제품의 수분 함량은 증가하는 경향을 보였다. 적층 수를 256결로 동일하게 하고 pastry마가린 함량이 50%일 경우는 $17.3{\pm}0.5%4로 나타났으며, 130%에서는 $7.5{\pm}0.2%$로 pastry 마가린 함량이 증가할수록 제품의 수분 함량은 감소하였다. Pastry 마가린 함량을 70%로 동일하게 했을 때 굽기 손실의 변화는 27결일 경우 $25.0{\pm}0.7%$로 나타났으며, 1024결일 경우엔 $18.8{\pm}0.6%$로 나타나 적층 수가 증가할수록 제품의 굽기 손실은 감소하는 경향을 보였다. 적층 수를 27결로 동일하게 한 경우에서는 pastry 마가린 함량이 90%일 때 $25.4{\pm}0.4%4의 굽기 손실이 발생하였으며, 110%에서 $26.9{\pm}0.4%$로 굽기 손실이 가장 높게 나타났다. Pastry 마가린 함량이 130%이고 적층 수가 81결일 때에 $21.87{\pm}0.79\;ml/g$로 최대의 부피를 나타내었다. 또한 vapor action의 크기는 9-15 mm가 pastry 마가린 함량 110%, 적층 수 256결에서 $8.25{\pm}0.50$개로 가장 많이 나타났다.

• 설비공학논문집
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• 제10권2호
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• pp.238-250
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• 1998

Vapor-liquid equilibrium apparatus is designed and set up. The vapor-liquid equilibrium data of the binary system HFC125/134a are measured in the range between 268.15 and 283.15K at five compositions. Twenty-five equilibrium data are obtained. To verify consistency of these data, they are tested for thermodynamic consistency. Based upon the present data, the binary interaction parameter for CSD and RKS equation of state is calculated at five isotherms and comparison with the data in the open literatures is made. Results of Nagel and Bier are in very good agreements with those from this study within 0.32∼1.11% for bubble point pressure and －0.66∼0.18% for vapor mole fraction.

• 약학회지
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• 제24권2호
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• pp.79-86
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• 1980

CO-intoxication is a serious problem in public health since the coal briquette has been used as one of fuels from 1950's. It has been discussed that the treatment with acetic acid vapor may be effective for CO-intoxication. This study was undertaken to investigate the action of acetic acid therapy, comparing with the spontaneous air treatment The acetic acid vapor was introduced to the blood combined with CO (in vivo and in vitro). The dissociation of COHb, the production of COHb, the levels of Hb and adrenaline and nor-adrenaline were measured. The effect of acetic acid vapor on dissociation of COHb was about 7-9% more effective than the spontaneous air treatment. The acetic acid vapor treatment for the dissociation of COHb was similar effect to the spontaneous air treatment. In an experiment of the combining CO gas with blood, the acetic acid vapor treatment was less effective in the production of COHb than that of spontaneous air treatment. Treatment with the acetic acid vapor to rabbit intoxicated with CO gas induced a little amount of Hb in blood comparing with the spontaneous air treatment. But, it is not a significant increment statistically. By the acetic acid vapor treatment after CO gas intoxication the adrenaline was increased and noradrenaline was decreased. With these results, it is assumed that the effect of acetic acid therapy on CO-gas intoxication would be caused by inductions of Hb and adrenaline and to be reduction of nor-adrenaline.

• 한국정밀공학회지
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• 제18권4호
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• pp.78-84
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• 2001

This study deals with the heat-treatment technique of SM45C steel with respect to less of deformation in control. The whole process for the production of landing gear must go through with uniformally controlled heat treatment, where as most deformation usually occur in nonuniform cooling environment. When a heated metal is submerged into a certain quenchant, the rate of cooling rapidity can be measured rather slow during the early stage of the procedure due to an Occurrence of a vapor blanked. As the additional course of cooling action is applied and the vapor from a vapor blanked is destroyed simultaneously, the speed of cooling promptness can be considered rather swift. The object of this study is to control the certain deformations as in the procedure of a heat treatment for landing gear by analyzing and improving the conditions of different substance of quenching liquids. Several noticeable curves indicating the temperature variation on the ap-plied metals during the cooling procedures, along with detectable rates of water verses oil and that of different polymer solutions are illustrated.

• 연구논문집
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• 통권30호
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• pp.15-23
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• 2000

In this study, develop the thermal pump using water evaporation and condensation. Vapor from heating room moves up to pumping room and press the water of pumping room. Consequently water is pumped out to water tank. Then hot vapor direct contact with cold water in condensing room after pumping process. At this time, pressure of condensing room is down to-5kPa and suck in water of tank. This pump executes self ping and good durability because of no mechanical moving parts. Thermal pump is pumped cyclic so that, this pump is not used single. Therefore thermal pump of hot water boiler used to multi-stage for stable pumping rate. As the result of performance test, the developed thermal pump proves pumping action of water evaporation/condensation. And total volume flow rate is 500liter during one hour. If three thermal pump is installed parallel, this pump can use to the hot water boiler in the 300,000kcal/h class.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2002년도 추계학술발표회
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• pp.250-252
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• 2002

The goals of environmental monitoring are to locate and quantify the significant contamination, estimate the fate and transport, estimate the potential exposure and risks to humans and the environment, and track the performance of various remedial technologies. In this study, ceramic gas sensor system is proposed to enhance the effectiveness of soil vapor extraction (SVE) process by monitoring the effluent gas. SVE is a technique that is widely used to remediate unsaturated soils contaminated with volatile organic contaminants. The sensor response for benzene, toluene, and xylene, the representative effluent gas compositions of SVE process, was evaluated using the proposed sensor system. As a result, it was verified that the response of sensor was increased or decreased very sensitively according to the change of the effluent gas concentration. Besides, the sensor could detect the difference over a wide range of concentration and it was more sensitive in order of xylene, toluene, and benzene. It is expected that this VOC analysis method results in field monitoring costs saying and appropriate immediate action for process control. More detailed experiments are being conducted in our research group.

• 한국농촌건축학회논문집
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• 제23권4호
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• pp.63-71
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• 2021

The purpose of this study was to investigate whether the standard models for rural housing and wooden housing model have performance for hygrothermal and to propose a way of improvement relevant to hygrothermal performance for those models. All of the models to be analyzed were found to have some parts that were absent of stability in terms of performance for hygrothermal. In the process of analyzing the causes and proposing improvement measures, the following conclusions were derived. Fist, The exterior surface of the structure should be composed of a structure with good moisture permeability, and for the interior surface, a variable vapor retarder paper should be applied in consideration of the reverse condensation phenomenon in summer. Second, in terms of performance for hygrothermal, applications of external insulation plaster finish to the exterior wall or of ventilation method using a rafter vent on the roof should be avoided. Third, a rain screen method with a ventilation layer should be applied to the exterior wall, and a method of constructing ventilation layer separated from the insulation layer with a vapor retarder paper should be applied to the roof. Fourth, the application of insulation materials having capillary action, such as wood fiber insulation board or cellulose insulation board, contributes to more stable performance for hygrothermal.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 추계학술대회논문집B
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• pp.359-364
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• 2000

The fluid flow, heat transfer and the local mass fi-action of chemical species in the chemical vapor deposition(CVD) manufacturing process are numerically studied. The deposition of silicon from dilute silane is hydrogen carrier gas in a horizontal CVD reactor is investigated. The effect of inlet carrier gas velocity, mass fraction of silane, susceptor angle on the deposition thickness and uniformity was represented.

• 한국식물병리학회지
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• 제12권3호
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• pp.316-323
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• 1996

비가림재배 포도원에서 발생하는 흰가루병에 대하여 triazole계 살균제 flusilazole, myclobutanil, difenoconazole, penconazole, triflumizole, triadimefon의 방제 효과를 검정한 결과는 다음과 같다. 살균제 처리구의 이병과방율과 이병엽율은 무처리구에 비해 현저히 감소하였고, 이들의 방제가는 과방에서 약제에 따라 94.7∼97.9%, 잎에서 85.5%∼90.9%였으며 대조약제인 polyoxin B의 방제가와 유사한 정도를 보였다. 공시살균제의 보호효과는 살균제를 병발생 1주일전에 살포하는 경우, 살포 3주 후에 방제가는 약제에 따라 72.2∼90.5%였으나 4주 후에는 21.2∼41.6%로 감소하여 대조약제 polyoxin B의 52.5%보다 감소시켰으나 myclobutanil의 발아억제 효과는 약제 농도증가에 크게 영향받지 않았다. 살균제에 침지한 cheesecloth를 포도원 선반에 매달아 조사한 공시살균제의 훈증효과는 살포농도의 2배로 처리했을 때 처리점으로부터 반경 30cm이내의 포도송이에서는 약제에 따라 57.2∼71.1%의 방제가를 보였으나 전체 식물체에서는 49.1∼65.8%로서 10일 간격으로 3회 살포한 것 보다 낮은 방제가를 보였다.