• 한방안이비인후피부과학회지
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• 제24권2호
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• pp.79-86
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• 2011

Objective : The purpose of this study is to report the oriental-western cooperative treatment on opthalmic and dermatologic disease caused by adverse effect of filler injection galbella region. Method : After filler injection, a patient suffers from spontenous blineness and palsy of oculomotor and trochlear nerve on right eye and erythema on glabella and nasal region. She is admitted to kyung-hee oriental hospital for 2 weeks with oriental(herbal-medicine, acupunture and nega treatment) and western(department of opthalmology, dermatology and plastic surgery measurement) treatment. Result & Conclusion : Nerve palsy was recovered near to normal. And skin legion was proceeded to recovery period without any complication. This recovery speed with oriental-western cooperative treatment is much faster than usual treatment.

• Elastomers and Composites
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• 제22권4호
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• pp.293-304
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• 1987

The purpose of this study is to examine the effect of rubber-filler attachments on inorganic filler contained NR vulcanizatic. The results of this study showed as follows. The reinforcing properties and damping values of the vulcanizates in the elastic region showed strong relation with the filler characteristics and temperture. The vulcanizates filled with nature-activated inorganic filler like silica had higer elastic modulus and damping values than the vulcanizates of nature-nonactivated inorganic filter. The reinforcing effects of differential filler loadings on NR raised the effects with temperature rise, but the damping values varied with the filler characteristics and temperature variations.

• Journal of Electrochemical Science and Technology
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• 제14권4호
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• pp.349-360
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• 2023

This study investigated the tri-metallic galvanic coupling of different metals in the tubes, fillers, and fins of a heat exchanger. The goal was to prevent corrosion of the tubes using the fin as a sacrificial anode while ensuring that the filler metal has a more noble potential than the fin, to avoid detachment. The metals were arranged in descending order of corrosion potential, with the noblest potential assigned to the tube, followed by the filler metal and the fin. To address a reduction in protection current of the fin, the filler metal was modified by adding Zn to decrease its corrosion potential. However, increasing the Zn content of filler metal also increases its corrosion current. The study examined three different filler metals, considering their corrosion potential, and kinetics. The results suggest that a filler metal with 1.5 wt.% Zn addition is optimal for providing cathodic protection to the tube while reducing the reaction rate of the sacrificial anode.

• 한국재료학회:학술대회논문집
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• 한국재료학회 1993년도 춘계학술발표회
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• pp.117-117
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• 1993

• 펄프종이기술
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• 제47권2호
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• pp.53-60
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• 2015

The effects of stirring speed during filler modification by dual polymers on flocculation and reflocculation of PCC (precipitated calcium carbonate) particles and its effect on handsheet properties were elucidated. PCC surface was modified by adsorbing A-PAM (anionic polyacrylamide) and C-starch (cationic starch) in series at various stirring speeds. It was found that increasing stirring speed during filler modification decreased the initial floc size of PCC. Continuous stirring with the same speed for filler modification resulted in the decrease of a floc size, eventually reached a steady state. The variations in a floc size was influenced by the stirring speed during filler modification: the lower the stirring speed during filler modification, the larger the floc size variations. Conclusively, the stability of PCC floc could be improved by increasing the stirring speed. In addition, the stirring speed influenced the handsheet properties. The smaller the PCC floc, the lower the strength of handseet. However, too much larger floc size also deteriorated paper strength. There exists an optimum floc size in term of paper strength which shall be controlled by stirring speed during filler modification.

• 마이크로전자및패키징학회지
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• 제6권3호
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• pp.51-63
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• 1999

무기 충전제를 고충전시킨 에폭시 수지 조성물이 반도체 패키지의 신뢰성에 미치는 영향을 검토하였다. Ouchiyama 등의 모델로부터 최대충전밀도를 향상시킴으로써 고충전을 달성할 수 있는 방법을 제시할 수 있었으며, 최대충전밀도가 증가함에 따라 에폭시 수지 조성물의 점도가 감소하였고, 흐름성이 개선되었다. 충전제 함량이 증가함에 따라 흡습 특성이 향상되었고 열팽창계수를 낮춤으로써 저응력화를 달성할 수 있었으나, 임계 충전제 함량 이상에서는 금속 리드프레임과의 접착강도가 저하되었다. 따라서 에폭시 수지 조성물의 균형 있는 신뢰 특성을 얻기 위해서는 충전제 함량을 적정하게 선택해야 하며, 충전량을 더욱 높여 고신뢰성을 얻기 위해서는 최적의 충전제 조합을 선정하여야 함을 알 수 있었다.

• 한국재료학회지
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• 제33권5호
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• pp.214-221
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• 2023

As a filler metal for lowering the melting point of Ag, many alloy metal candidates have emerged, such as cadmium, with zinc, manganese, nickel, and titanium as active metals. However, since cadmium is known to be harmful to the human body, Cd-free filler metals are now mainly used. Still, no study has been conducted comparing the characteristics of joints prepared with and without cadmium. In addition, studies have yet to be conducted comparing the typical characteristics of brazing filler metals with special structures, and the joint characteristics of brazing filler metals with available frames. In this study, the characteristics of junctions of silver-based intercalation metals were compared based on the type of filler metal additives, using a special structure, a filler metal sandwich structure, to protect the internal base metal. The general filler metal was compared using the structure, and the thickness of the filler metal according to the thickness was reached. A comparison of the characteristics of the junction was conducted to identify the characteristics of an intersection of silver-based brazing filler metal and the effect on joint strength. Each filler metal's collective tensile strength was measured, and the relationship between joint characteristics and tensile joint strength was explored. The junction was estimated through micro strength measurement, contact angle measurement with the base metal when the filler metal was melted, XRD image observation, composition analysis for each phase through SEM-EDS, and microstructure phase acquisition.

• Carbon letters
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• 제14권2호
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• pp.105-109
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• 2013

Effects of the amount of nickel powder (Ni) in Ni-carbon fiber (CF) hybrid filler systems on the conductivity(or resistivity) and thermal coefficient of resistance (TCR) of filled high density polyethylene were studied. Increases of the resistivity and TCR with increasing Ni concentration at a given hybrid filler content were observed. Using the fiber contact model, we showed that the main role of Ni in the hybrid filler system is to decrease the interfiber contact resistance when Ni concentration is less than the threshold point. The formation of structural defects leading to reduced reinforcing effect resulted in both a reduction of strength and an increase of the coefficient of thermal expansion in the composite film; these changes are responsible for the increases of both resistivity and TCR with increasing Ni concentration in the hybrid filler system.

• 대한소아치과학회지
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• 제40권4호
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• pp.247-252
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• 2013

치면열구전색은 생물막의 축적을 물리적으로 막아주며 박테리아에 의해 형성되는 산물질에 화학적 장벽 역할을 한다. 1999년 S-PRG(Surface reaction-type pre-reacted glass ionomer) 필러기술이 개발되었는데 S-PRG 필러는 수분 존재 하에서 스스로 분해되지 않으면서, 지속적으로 불소유리가 가능하다. 이에 저자는S-PRG 필러를 포함하는 치면열구전색제의 미세누출 및 인접 법랑질에 대한 항우식 효과를 기존의 유동성레진 치면열구전색제와 비교해 보고자 한다. 건전한 소구치, 대구치를 실험대상으로 사용하였다. S-PRG 필러를 함유해 불소를 유리하는 치면열구전색제 Beautisealant$^{(R)}$(Shofu, Japan)를 실험군으로, 유동성레진 치면열구전색제 Concise$^{(R)}$(3M ESPE, USA)를 대조군으로 선정하였다. 미세누출실험을 위해 실란트 변연 1 mm를 제외한 나머지 치아에 손톱광택제를 2회 도포 후 2% 메틸렌블루 용액에 24시간 동안 보관 후 수세하였다. 항우식효과의 평가는 인공우식용액에 9일간 보관 후 수세 후 시행하였다. 수세한 시편들은 투명레진에 매립 후 현미경 관찰을 위해 절단하였다. 통계분석은 미세노출의 정도는 Chisquare test를, 측정된 우식의 깊이는 Mann-Whitney test를 이용해 두 군 간의 유의성을 검증하였다. S-PRG 치면열구전색제와 유동성레진 치면열구전색제의 미세누출 차이는 관찰되지 않았지만, S-PRG 치면열구전색제는 유동성레진 치면열구전색제 보다 더 높은 항우식효과를 보이는 것으로 나타났다.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2006년 창립20주년기념 정기학술대회 및 국제워크샵
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• pp.233-236
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• 2006

A dilatometer was used to investigate the effect of cure conditions and the presence of filler in an epoxy system. These studies showed shrinkage in the cured epoxy when heating it through the glass transition temperature region. The magnitude of the shrinkage, related to stress build up in the epoxy during curing, was influenced by the processing conditions, filler presence and the nature of the mold used to contain the resin. Cure and cyclic cure at a lower temperature, prior to a post cure, decreased the magnitude of observed shrinkage. Cure shrinkage decreased with number of cyclic cure. Post cured samples outside the mold led to less shrinkage compared with sample in the mold. And sample containing kaolin filler showed less shrinkage than unfilled sample.