• Journal of the East Asian Society of Dietary Life
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• v.20 no.4
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• pp.524-530
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• 2010

The purpose of this study was to determine the characteristics of noodles with added Polygonati odoratum powder. Noodles' water binding capacity increased with increasing amounts of Polygonati odoratum powder. Solubility and swelling power increased with the temperature increasing proportionally to the amounts of added Polygonati odoratum powder. The gelatinization time decreased with increasing of Polygonati odoratum powder. The rate of weight increase and water absorption of cooking noodles decreased with increasing Polygonati odoratum powder. But the turbidity of the soup increased. With increasing Polygonati odoratum powder, L-values were shown to decrease and a and b value were increased. The results of sensory evaluation were that noodles containing under 5% Polygonati odoratum powder were rated as high-quality noodles.

• Journal of the East Asian Society of Dietary Life
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• v.11 no.4
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• pp.295-304
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• 2001

This study was conducted to investigate the cooking properties of noodles made from composite flour blended with green tea powder. As the ratio of green tea powder increased, development time was longer than that of the control. The stability of dough showed higher value than the control except 2% addition group. The highest viscosity was at the 4% addition group. but 2% addition group showed the lowest viscosity. As the additional ratio of green tea powder was increased. the volume expansion ratio was increased, but water soluble solid matters contents in all addition groups had a lower level than that of the control. Also, the yellowness level of noodle was increased, but the brightness, redness and color and flavor acceptability was decreased, as the additional ratio was increased. However. 2~4% addition group of green tea powder had a similar acceptability profile to that of the control group.

• Journal of Welding and Joining
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• v.14 no.5
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• pp.145-150
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• 1996

The variation of spatter generation in gas metal arc welding with welding conditions and wire compositions was investigated and interpreted in terms of arc stability. The transition range from a short circuit mode to a spray mode in the mixed gas welding showed an unstable arc and generated the largest amount of spatters. Titanium reduced spatters only in the globular mode of $CO_2$welding and silicon and manganese showed the same effect The effect of silicon and manganese, however, was no longer seen when titanium was added simultaneously to the wire. It is believed that deoxidizers easily form oxides on the anode and make the arc stable even in DCRP welding. The wires with deoxidizers also showed low short circuit frequency, resulting in the increase of large size spatters.

• Journal of Welding and Joining
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• v.14 no.5
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• pp.106-112
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• 1996

The effects of Ti addition in welding wire on the spatter generation and the droplet transfer phenomena were investigated. With increasing Ti content the spattering rate was decreased but the ratio of large size spatter (D $\geq$ 1. 0mm) was increased in both short circuit and globular transfer mode of $CO_2$welding. In short circuit transfer region, the arcing time was increased and the droplet transfer frequency was decreased with increasing Ti content In globular transfer region, the transition current and voltage to globular transfer was lowered and the welding condition region for stable globular transfer was widened with increasing Ti content.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.05b
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• pp.191-192
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• 2003

본 연구는 서울을 중심으로 한 수도권지역에서 해륙풍과 주풍 및 계절풍을 고려하여 대기오염 측정소가 있는 지점을 중심으로 강화도 석모리, 인천 용현동, 서울 불광동, 정동, 전농동, 방이동지점과 양평 국수리지점을 측정장소로 선정하여 미세먼지 분야의 측정자료를 해석한 것으로 1차 측정은 2002년 8월 5일 ∼8월 22일, 2차 측정은 2002년 10월 10일 ∼ 10월 18일까지 실시 되었으며, 3차 측정은 2003년 1월 10일∼l월 24일까지 겨울 집중 측정이 실시되었으며, 측정결과를 해석중에 있다. 또, 4차 측정은 2003년6월에 실시될 예정이다. (중략)

• Journal of Korean Society of Forest Science
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• v.84 no.4
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• pp.432-436
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• 1995

Perforated ray cells are recorded for the first time in the Korean hardwoods of Rosa multiflora, Rosa multiflora var. platyphylla, Rosa rugosa, Spiraea cantoniensis, and Stephanandra incisa belonging to the family Rosaceae. The perforated ray cells have simple perforations, which are identical with the types of perforation plates in the vessel elements of same wood.

• Proceedings of the Korean Society of Crop Science Conference
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• 2005.04a
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• pp.286-287
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• 2005

• Journal of Welding and Joining
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• v.12 no.4
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• pp.76-84
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• 1994

Droplet transfer modes due to welding conditions and the effect of Ca in welding wire on droplet transfer were investigated. Droplet transfer mode in CO$_{2}$ welding was classified into 2 modes, that is, short circuit and globular transfer, with increasing welding current and voltage. With increasing Ca content in wire, repulsive pressure due to vaporization of Ca was considerably increased. In short circuit transfer region, arcing time was increased and droplet transfer cycle was decreased, with increasing Ca content. In globular transfer region, welding condition for globular transfer was lower current region, with increasing Ca content.

• Proceedings of the KWS Conference
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• 2006.05a
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• pp.274-276
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• 2006

Weldability of high Cr ferritic steel for $620^{\circ}C$ grade turbin casing were investigated. The effect of carbon content on the cold and hot cracking susceptibility and HAZ softening was determined. The cast steel with higher carbon content showed higher HAZ hardness because of the dissolution of cabonitrides during welding thermal cycle. Moreover, it showed higher solidification cracking sensitivity because of the little S-ferrite formation in weld metal. Both steels showed HAZ softening at $900^{\circ}C$ peak temperature after PWHT.

• Proceedings of the KWS Conference
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• 2003.11a
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• pp.256-258
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• 2003

Hot-rolled and Extruded plates of AZ type magnesium alloys were successfully joined by friction stir welding(FSW). AZ31B-H24 and AZ61 plates with the thickness of 4mm were used, and the microstructural development in the stir zone were investigated using optical and scanning electron microscopes. The grain size of base metal and stir zone were investigated using the line-intersecter method. Hardness of the stir zone was remarkably increased due to very fine recrystallized grain structure both in AZ3l and AZ6l alloys. Tensile strengths of the FS welded Mg alloys AZ31 and AZ61 were strongly affected by formation of the intermetallic compounds, ${\beta}$-Al$\sub$12/Mg$\sub$17/.