• Journal of Korean Medical classics
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• v.19 no.2 s.33
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• pp.196-221
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• 2006

자락출혈료법방면(刺絡出血擾法方面), 금원사대가재침구상다사용료자락법(金元四大家在鍼灸上多使用了刺絡法), 류완소재임상상(劉完素在臨皮上), 자락출혈이대자팔관법(刺絡出血以大刺八關法), 진행청열사화(進行淸熱瀉火), 저여사화파사상상일치(這與瀉火派思想相一致). 장종정야수류완소적영향(張從正也受劉完素的影響), 용비침다방면사용자락출혈료법(用排針多方面使用刺絡出血療法), 불근용어와과질환(不僅用於外科疾患), 환용어내과질환적지료(還用於內科疾患的治療), 광대료기사용범위(據大了其使用範圍), 사자락출혈료법갱가득도료발전(使刺絡出血療法更加得到了發展), 이동원야재사음화법상(李東桓也在瀉陰火法上), 광법사용료자락출혈료법(廣範使用了刺絡出血療法). 주진형재침자보사상(朱震亨在針刺補瀉上), 야인위침지유사적공효무보적공효(也認爲針只有瀉的功效無補的功效), 주장재사법상사용자락출혈법(主張在鴻法上使用刺絡出血法). 류완소재취혈방면(劉完素在取穴方面), 주장용통경접기법(主張用通經接氣法), 이급접경삼법(以及接經三法), 재통증상용분경취혈법등(在痛症上用分經取穴法等), 래소통경맥적기혈(來疎通經?的氣血). 재임상상중시료정혈(在臨床上重視了井穴), 원혈화오유혈(原穴和五兪穴). 장종정대경락장부지병(張從正對經絡臟腑之病). 상이순경취혈법취경락지정혈(常以循經取穴法取經絡之井穴), 진행자구치료(進行刺灸治療樓). 이동원위보익비위(李東垣爲補益脾胃), 취복적모혈화하합혈(取腹的募穴和下合穴), 이급이허측보기모적방법진행취혈(以及以虛則補其母的方法進行取六), 병이오난침법화표본치료응용오유혈진행료치료(幷以五亂針法和標本治療應用五兪六進行了治療). 주진형보충증입료십이경견증화합생견증(朱震亨補充增入了十二經見症和合生見症), 병이설명료각경락병증특점(幷以說明了各經絡的病症特点), 지출병증적침구치료방법(指出病症的鍼灸治療方法), 류완소준순료중풍분육경침자법화심병적접경삼법(劉完素遵循了中風分六經針刺法和心痛的接經三法).

• Journal of the Korean Society of Food Science and Nutrition
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• v.29 no.3
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• pp.384-388
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• 2000

본 연구는 cocoa mass를 마이크로파 roasting하여 그 향기성분의 변화를 pyrazine류를 중심으로 살펴보는 한편 상법으로 roasting한 경우와 비교하고자 하였다. 마이크로파 roasting은 110,120,130,140,15$0^{\circ}C$의 온도에서 20분 및 30분 동안 행하였고 상법의 경우는 14$0^{\circ}C$에서 30분간 roasting하였다. Roasting한 시료를 연속수증기증류추출법으로 추출하고 농축한 후 GC와 GC/MS로 향기 성분을 분석하였다. 마이크로파 roasting의 경우 5분만에 14$0^{\circ}C$에 도달한 후 그 온도를 잘 유지하였으나, 상법의 경우 25분이 경과되어서야 14$0^{\circ}C$에 도달되었다. Roasting 한 시료의 향기성분으로 2,6-dimethyl pyrazine, 2,3,5-trimethyl pyrazine, 2,3,5,6-teramethyl pyrazine, 5-methyl fufural, 2-methyl-6-propyl pyrazine 등이 확인되었다. Roasting 온도가 증가함에 따라 dimethyl-, trimethyl-, tetramethyl pyrazine류가 증가하였고, tetramethyl pyrazine은 15$0^{\circ}C$ 20분 roasting의 경우 현저하게 증가하였으나, 30분 동안 roasting한 경우 14$0^{\circ}C$에서 증가하였다가 15$0^{\circ}C$일 때는 감소하였다. 그러나 적정 roasting 지표인 di/tri, di/tetra pyrazine의 비율은 1 이하를 보임으로써 마이크로파 roasting이 cocoa mass의 향기 발현에는 부족한 것으로 나타났다.

• Journal of the Korean Society of Hazard Mitigation
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• v.7 no.2 s.25
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• pp.45-52
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• 2007

In this study, the flood inundations of the Nam River catchment running through the Uiryeong and Haman regions have been simulated using the numerical model based on quadtree grids. The nonlinear Saint Venant equation is employed as the governing equation for a numerical model in this study. The governing equations are discretized explicitly with a finite difference leap-frog scheme on adaptive hierarchical quadtree grids. Results from this study are compared with those of established numerical models such as the HEC-RAS and the FLUMEN. A numerical model is also simulated according to the frequency variations of flood event. Obtained numerical results show good agreements with them of commercial models. It is found from this study that the flood inundations in the studied area can be occurred at a 500 year frequency event.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.1254-1257
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• 2007

본 연구에서는 유류-유사 분리기내에서 유체의 흐름거동을 상용 3차원 수치모형인 FLOW-3D를 이용하여 해석하였다. 유류-유사 분리기는 도심지의 우수로 인한 유출발생시 동반되는 이물질을 여과시키는 기능을 가진 지하구조물이다. 우수로 인한 유출이 발생하여 유류-유사 분리기내로 흘러들어오는 유입수는 3차원적 거동을 하고 다양한 흐름특성을 갖는다. 따라서, 분리기내에서의 흐름거동을 정확히 해석하는데 많은 어려움이 있다. 본 연구에서는 정류판(baffle)과 유류흡착기(oil skimmer)로 구성된 유류-유사 분리기에서의 유류와 유사를 포함하고 있는 유출수의 복잡한 거동을 해석하기 위해 수치모의를 실시하였다. 유류와 유사에 대한 포착률(oil and grit trap)은 유류-유사 분리기내에서 유체의 흐름거동과 관계된다. 따라서, 본 연구에서는 유류와 유사의 포착률을 향상시키기 위한 수치모의의 기초적인 단계로서 유류-유사 분리기내에서 유류흡착기(oil skimmer)를 설치한 경우와 설치하지 않은 경우에 대한 유체의 흐름거동을 FLOW-3D를 이용하여 3차원 수치모의를 실시하였다. 수치모의를 통해 유류흡착기의 유무에 따른 유류-유사 분리기내에서의 흐름거동을 알 수 있었으며, 유류흡착기를 설치한 경우엔 유류 흡착기에 의해 여과될 수 있는 유류와 유사에 대한 각각의 포획률이 높아짐을 알 수 있었다.

• Membrane Journal
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• v.22 no.6
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• pp.381-394
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• 2012

Recently, a variety of chemical and physical methods are employed to separate ionic materials from complex aqueous. Most of all, membrane pertraction using contactor has been considered as alternative recovery and separation system in field of chemical, petrochemical and medicines because heavy metals, hydrocarbon based materials in contaminants like wastewater can be recovered by pertraction system. Also, pertraction process has characteristics such as ease of operation, lower energy consumption and operational cost, higher selectivity. This work investigates some example of developed membrane and their performance for the application of pertraction process.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.34 no.8
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• pp.47-54
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• 2006

In this paper, numerical algorithms applied in two-step eulerian scheme are investigated and implemented. Element quantities are advected with donor or van Leer algorithm. Nodal quantities are advected with Simplifed ALE [SALE] algorithm. Material interfaces are determined with Simple Line Interface Calculation [SLIC] algorithm. Practical aspects considered for code development are addressed in detail. The results of developed two-step Eulerian code are verified by comparing with those from pure lagrangian scheme and commercial code.

• Journal of the Korean Society of Food Science and Nutrition
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• v.27 no.2
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• pp.296-304
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• 1998

The effects of common Korean dietary fiber-rich foods(dried sea mustard, Lentinus edodes and Korean radish leaves) on total gut transit time of diet, serum cholesterol level and mineral apparent absorption ration and tissue level were investigated. Twenty eight male were divided into 4 groups and were fed a control diet(containing 2% cellulose) and three fiber supplementary diet mixed with 10% of the above dietary fiber rich foods for 4 weeks, respectively. Body weight gain and food efficiency ration were not affected by the supplementary diet of fiber but the total gut transit time of diet was shortened in all dietary fiber groups. The Lentinus edodes reduced significantly serum total cholesterol and increased the HDL-cholesterol/total cholesterol ratio at 4th week without and effect on calcium and iron apparent absorptions and tissue levels of the minerals. Radish leaves decreased significantly iron apparent absorption ration with a tendency to increase iron retention in spleen and did not alter serum cholesterol level. Serum cholesterol concentration and calcium and iron apparent absorptions were not significantly altered by the ingestion of sea mustard, while it had more soluble dietary fiber than mushroom and radish leaves.

• Progress in Medical Physics
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• v.17 no.1
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• pp.54-60
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• 2006

In order to apply the TRS-398 dosimetry protocol developed by IAEA we directly calculated the quality correction factors for high energy photons. The calculations were peformed for seven commercial cylindrical chambers (A12, IC70, N23333, N30001, N30006, NE2571, PR06C/G). In comparison with quality correction factors given by TRS-398 our results were in good agreement within ${\pm}0.3%$ (maximum ${\pm}0.3%$) for all chambers and photon qualities.

• Membrane Journal
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• v.6 no.1
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• pp.37-43
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• 1996

Chitosan composite membranes were prepared by casting chitosan solution onto porous polysulfone ultrafiltration membrane. Composite membranes to separate water from aq. ethanol solution were chemically crosslinked by using various crosslinking agent, glyoxal, terephthalaldehyde and glutaraldehyde. The morphology of surface crosslinked chitosan composite membranes were examined by scanning electron microscopy. ATR-FTIR was employed to confirm the crosslinking mechanism of surface crosslinked chitosan composite membranes. In the case of glutaraldehyde, optimum separation factor and decreasing trend of flux were shown.

• Journal of Welding and Joining
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• v.30 no.4
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• pp.38-43
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• 2012

Using a fiber laser heat source, an oil pressure sensor was fabricated to measure the pressure in commercial vehicles. A stepping motor was used for the rotational and translational motion in the diaphragms and hardware joining. Laser welding process algorism including shielding gas control and vision system was integrated by using LabVIEW software for the high quality welding and in-line monitoring purpose. For the maximum flexibility in pressure transmission to the pressure sensor, thin sheet metal diaphragm, $25{\sim}50{\mu}m$(SUS-316L), was used and the diaphragms were optimally designed with FEM analysis. The welded samples were cross-sectioned the observation showed that the maximum depth ratio was more than seven times of diaphragms. The maximum welding speed was measured to be as high as 50in/mm by the developed automation mechanism. The fabricated prototypes were tested for the proof pressure, spring constant and sealing. The FEM results of spring constant measurement was as accurate as up to 80% of the design value and the sensor was safely operated up to the nominal pressure of 10bars.