• Transactions of the Korean Society of Mechanical Engineers B
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• v.25 no.12
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• pp.1730-1738
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• 2001

This paper presents an overview of testing and analyzing field performance of a centrifugal chiller which has a rated capacity of 200 RT(703 kW). Field data of a chiller installed in the cleanroom research building of KIST has been collected far performance analysis. The operating data included start-up, shut-down, and quasi-static state where cooling capacity and compressor power consumption varied cyclically. It was found that the steady-state thermodynamic model could be applied to relate the cooling capacity and COP under quasi-static conditions. The results led to finding the required cooling load pattern and a possible energy saving method. This study provides a method of evaluating performance of a large capacity centrifugal chiller in which field test is necessary.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.24 no.7 s.178
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• pp.1650-1660
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• 2000

Continuous casting process has been adopted increasingly in recent years to save both energy and labor. It has experienced a rapid development in the production of semi-finished steel products, rep lacing the conventional route of ingot casting and rolling. In order to achieve this merit, however, more studies about the mechanism between roll and slab are needed. In this paper, a dynamic bulging in steel cast slabs was simulated by considering the solidification and heat transfer. This study is to prevent internal cracks of a slab in a bending and unbending zone. The value of moving strand shell bulging between two supporting rollers under the ferrostatic pressure and slab-self weight has been calculated in terms of creep and elasto-plasticity. The strain and strain rate distributions in solidified shell undergoing a series of bulging are calculated with working boundary conditions.

• Journal of the Korean institute of surface engineering
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• v.30 no.6
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• pp.406-411
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• 1997

Transparent conductive thin films have found many applications in active and passive electronic and opto-electronic devices such as flat panel display electrode, solar cell electrode and window heat mirror, etc. Low resistivity and high transmittance of these films can beotained by controlling deposition parameters which are oxygen partial pressure, substrate temperature and dopant concentration. In this study, non-stoichiometric and Sb-doped thin electrical properties of undoped films have been degraded with increase of substrate temperature and optical properties have been improved in Sb-doped films. The resistivity of $2.5\times10^{-3}\Omega\textrm{cm}$,/TEX>, average transmittance of 80% and sheet resistance of 130$\Omega$/$\square$ at thickess of 2000 $\AA$ could be obrained at optmal condimal conditions which were at $400^{\circ}C$ of substrate temperature, 58% of oxygen partial pressure and 5% of Sb doping concentration.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.14 no.2
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• pp.224-230
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• 2001

In the Clinical study on 1 Case of Patient with Obstruction of the retinal artery, the results were as follows. 1. Obstruction of the retinal artery is acute disease that vision isdiminished fastly and become a blindness. 2. It belong to the cathegory of Pock Maeng(暴盲) in Oriental Medicine. 3. The causes of Obstruction of the retinal artery were the yin-deficiency of liver and kidney, the stagnation of vital energy and blood stasis, the abundance of phlegm-heat, the yang-deficiency of spleen and kidney, the yin-deficiency of spleen and kidney, the nonfastness of primordial energy etc. 4. We could get the effective result by providing the patient with Jinkansikpung-tang-gami(鎭肝熄風湯加味) in the acute period 5. In Acupuncture treament and other treament, Electro-acupuncture theraphy ana Lodestone theraphy were useo for neurologic stimulation, Body acupuncture and Auricula-acupuncture were used for promoting the circulation of vital energy and blood.

• Korean Chemical Engineering Research
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• v.46 no.2
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• pp.258-273
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• 2008

For being recent high oil price age, the interest in superheated steam drying technology is increasing as the method to enhance the energy efficiency of drying process consuming a lot of energy. This technology uses the superheated steam as drying medium to dry the materials and has advantages that can save the energy by recycling the evaporated high-temperature steam, enhance the quality of dried products, and minimize the exhaust of environmental pollution materials. In this work, it has been introduced from general drying principle to the principle and related studies of drying technology using superheated steam, using examples of superheated steam with dryer types, and industrial applications.

• Herbal Formula Science
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• v.19 no.1
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• pp.91-102
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• 2011

Objectives : This report describes 48 prescriptions related to the use of Herba Menthae main blended from Dongeuibogam. The following conclusions were drawn through investigations on the prescriptions that use Herba Menthae as a key component. Prescriptions that Herba Menthae was taken as a monarch drug are utilized for 15 therapeutic purposes, for example, wind stroke, throat disease, nose disease, head disease and tooth disease. In particular, 12.5% of prescriptions appear in the chapter of each wind stroke, throat disease, nose disease. Methods : Prescriptions that utilize Herba Menthae as the main ingredient are used in the treatment of urticaria, hemoptysis-hematemesis, loss of consciousness due to wind stroke and they are also used for treating 41 different types of disease. Herba Menthae is used for pathogenic factors such as wind and heat. Results : The dosage of Herba Menthae is 0.15pun(about 0.06g) to 4don(about 14g), however 5pun(about 1.88g) has been taken the most for clinical application. Conclusions : Gamgiltang, Piryongbanggamgiltang and Hoichunyanggyeoksan are the most useful base prescriptions which use the Herba Menthae as the main ingredient.

• Journal of Sasang Constitutional Medicine
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• v.26 no.4
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• pp.379-388
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• 2014

Objectives The aim of this study was to report significant improvement of hyperhidrosis after treatment with Hyungbangsabaek-san (荊防瀉白散), in a Soyangin Mangeum Symptomatic pattern Patient. Methods The patients were diagnosed with Soyang Sin-Yeol Du-Tong Mang-Eum Symptomatology(身熱頭痛亡陰證) and treated with Hyungbangsabaek-san(荊防瀉白散). The primary outcome measure for this study were sweat using a questionnaire with visual analogue scale(VAS). Secondary outcome assessment included change of odinary symptoms such as patient's sleep, feces and digestion. Results The symptoms of hyperhidrosis disappeared by the end of the accure period without side effect. Original symptoms were also changed. Conclusions This result show Hyungbangsabaek-san(荊防瀉白散) can be used to treat hyperhidrosis in a Soyangin Heat-related diarrhea accompanied by headache Mangeum(身熱頭痛亡陰) symptomatic pattern patient. Meaning and process of hyperhidrosis are different according to Sasang Constitutions.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.48 no.4
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• pp.10-16
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• 2011

A cabinet is an outer frame of a TV, which is usually made of poly-carbonate. Cabinets are apt to be deformed because of applied heat during injection molding process and UV joining process. Severely deformed cabinets cause a falling-off in quality of the final product. Therefore cabinets should be inspected and only the good ones should be delivered to the following process. We implemented an experimental system for shape recognition of a cabinet and proposed several indices to characterize the shape of a cabinet. We also proposed algorithms to eliminate the possible bias present in measured data and to check the goodness of a cabinet. Experimental results show the feasibility of the propose algorithms.

• Journal of the Korean Geosynthetics Society
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• v.16 no.2
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• pp.175-181
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• 2017

This paper presents the results of an investigation into the effect of forced temperature change cycles on physical and mechanical properties of sand and weathered granite soil. The effect of forced temperature change cycles on the particle arrangement and the thermal conductivity was first investigated. A series of triaxial compression tests on the soils were also performed to look into the effect of temperature change cycles on the stress-strain-strength behavior.

• Food Science and Preservation
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• v.12 no.2
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• pp.161-165
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• 2005

The content of general components such as moisture, crude ash, protein and crude fat were not different among the samples, but the content of crude protein in the fresh garlic was higher (in fresh garlic) than that of heat-treated garlic. Eighteen amino acids were analysed from the fresh garlic. The content of arginine was the highest in the fresh garlic. The amount of free amino acids was less than that of total amino acids, but their compositions were similar. Among minerals, the content of K was much higher than those of Mg, Ca and Na. The volatile compounds from the garlic extracts were identified by GC/MS. The composition of diallyl disulfides was very high among the volatile compounds, which were decreased in heat-treated ones.