http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
윤경환,도현승 청주대학교 산업과학연구소 1996 産業科學硏究 Vol.14 No.-
The adsorption characteristics of Cu(Ⅱ) on to shredded rubber granule from the wasted automobile tires were studied It was found in this investigation that the adsorption abilities of Cu^(+2) of waste rubber might be greatly increased by mixing with carboxyl acid chemicals. The investigation included carboxyl acid, particle size, stirring time, and pH. The studies showed the modifide rubber to be 8 to 9 times higher sorption abilities than that of the untreated rubber at the identical condition. The modifide rubber, in addition, might be competitive with activated carbon comparing by cost and sorption ability.
윤경환,도현승,장광택 청주대학교 산업과학연구소 1998 産業科學硏究 Vol.15 No.3
This paper was study the removal of Cu^(+2) in wastewater by the peanut hull carbon(PHC) as a adsorbent. It was found in this investigation that the adsorption abilities of Cu(+2) of peanut hull carbon might be greatly increased by boiling with 1N sulfuric and contact with 1% sodium bicarbonate chemicals. The investigation included particle size, stirring time, and pH. The studies showed the bicarbonate-treated peanut hull(BPHC) is higher sorption abilities than that of the untreated peanut hull carbon at the identical condition. The bicarbonate-treat peanut hull, in addition might be competivie with activated carbon comparing by cost and sorption ability.
윤경환,김종선,고영배,황철진,김종덕 한국유변학회 2007 Korea-Australia rheology journal Vol.19 No.3
LCD-BLU (Liquid Crystal Display-Back Light Unit) of medium size is usually manufactured by forming numerous dots with 50~300 m in diameter by etching process and V-grove shape with 50 m in height by mechanical cutting process. However, the surface of the etched dots is very rough due to the characteristics of the etching process and V-cutting needs rather high cost. Instead of existing optical pattern made by etching and mechanical cutting, 3-dimensional continuous micro-lens of 200 m in diameter was applied in the present study. The continuous micro-lens pattern fabricated by modified LIGA with thermal reflow process was tested to this new optical design of LGP. The manufacturing process using LIGA-reflow is made up of three stages as follows: (i) the stage of lithography, (ii) the stage of thermal reflow process and (iii) the stage of electroplating. The continuous micro-lens patterned LGP was fabricated with injection molding and its test results showed the possibility of commercial use in the future.
윤경환,김종선,고영배,황철진,김종덕 한국유변학회 2007 Korea-Australia rheology journal Vol.19 No.3
The light guide plate (LGP) of LCD-BLU (Liquid Crystal Display-Back Light Unit) is usually manufactured by forming numerous dots by etching process. However, the surface of those etched dots of LGP is very rough due to the characteristics of etching process, so that its light loss is relatively high due to the dispersion of light. Accordingly, there is a limit in raising the luminance of LCD-BLU. In order to overcome the limit of current etched-dot patterned LGP, micro-lens pattern was tested to investigate the possibility of replacing etched pattern in the present study. The micro-lens pattern fabricated by the modified LiGA with thermal reflow process was applied to the optical design of LGP. The attention was paid to the effects of different optical pattern type (i.e. etched dot, micro-lens). Finally, the micro-lens patterned LGP showed better optical qualities than the one made by the etched-dot patterned LGP in luminance.
윤경환 한국유변학회 1995 Korea-Australia rheology journal Vol.7 No.1
정밀사출성형품을 생산하기 위해서는 성형조건의 변화가 최종 사출품에 어떠한 영 향을 미치는 가에 대한 연구가 필요하다. 본논문에서는 성형조건을 조직적으로 변화시키며 가장 간단한 원반형상의 사출품에 남는 복굴절의 분포를 측정함으로써 성형조건의 변화가 최종 사출품의 광학적 이방성의 구조에 어떠한 영향을 미치는 가에 초점을 맞추었다. 광탄 성적 성질이 많이 다른 폴리스틸렌과 폴리카보네이트를 재료로 지름이 10.16cm 이고 두께 가 2mm인 금형을 사용하였다. 두께 방향의 복굴절양과 광학 주축각의 분포를 통해 보압크 기가 최종사출품의 광학적 이방성, 특히 내측의 두 개의 정점값에 미치는 영향을 알수 있었 다. 한편 서로 다른 두 물질의 광학적, 물리적 성질의 차이점에 기인한 복굴절 분포의 구조 적 차이점도 발견할수 있었다. 이 실험 데이터는 컴퓨터 모사에의한 최종사출품의 잔류 응 력과 광학적 이방성 예측에도 중요한 자료가 되리라 믿는다.