http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
DTP(Digital Textile Printing) 폐수의 나노여과막 농축수 처리에 관한 연구
이상순(Lee, Sang-Soon),장인성(Chang In-Soung),최은경(Choe, Eun-Kyung),유의상(Yoo, Eui-Sang),김치일(Kim, Chi-Il) 한국산학기술학회 2006 한국산학기술학회 학술대회 Vol.- No.-
본 연구의 목적은 DTP 폐수를 나노여과막으로 여과하여 처리하는 공정에서 발생하는 농축수를 처리하는 공정의 개발에 있다. 특히 DTP 장치의 특성상 발생 폐수를 별도의 폐수처리장으로 수집, 이동 하지 않고 현장에서 처리하는 소규모 패키지 시스템을 개발하고자 하였다. 아런 목표를 달성하기 위해 효율적인 여과공정인 나노여과를 적용하였고, 이 때 발생하는 농축수는 오존이나 과산화수소와 같은 산화제를 이용하여 일부 처리하고 나머지는 감압농축 및 감량화를 통한 농축수 관리 방안을 연구 하였다.
스팸메일 방지를 위한 제도적 기술적 해결방안에 관한 연구
강장묵(Jang Mook Kang),유의상(Eui Sang Yoo),이정훈(Jung Hoon Lee) 한국IT서비스학회 2003 한국IT서비스학회지 Vol.2 No.1
Spam mail is one of the side effect of the development and improvement of the internet that restrains the privacy of the individual on line. However indiscriminate application of Spam mail blocking can also cause significant violation on freedom of doing business to the fluent commercial transactions on line. Therefore this research looks at the exact understanding of the concept of Spam mail and inquiry on its issues. Also it looks at the case studies of its institutional solutions in USA and Europe as well as the advantage and disadvantage of the case studies on its technical solution. Finally, the research inquires into overall prevention of Spam mail, which considers both technical and institutional solution. With this research, limitations of current Spam mail prevention system and technology are pointed out and more effective course of overall Spam mail prevention solution is studied.
전단농화유체가 함침된 아라미드 직물의 물리적 특성에 관한 연구
권남희,윤이나,정원영,임대영,유의상,김주혜,Kwon, Nam-Hee,Yoon, Yi-Na,Jeong, Won-Young,Lim, Dae-Young,Yoo, Eui-Sang,Kim, Ju-Hea 한국섬유공학회 2012 한국섬유공학회지 Vol.49 No.2
Fabric construction affects the friction between yarns, which is a very important parameter on energy absorption and propagation. This study reports the physical properties dependent on the weaving density and STF (shear thickening fluid) impregnated aramid fabrics. To improve the frictional force between yarns, STF was applied on Kevlar woven fabrics. STF/Kevlar composite was composed of Kevlar woven fabrics impregnated with fumed silica dispersed in poly-ethylene glycol. The results demonstrated that the yarn pull-out force of neat Kevlar fabrics increased linearly as the fabric count increased. In the case regarding STF impregnated Kevlar fabrics, the pull-out force increased exponentially as the fabric count increased. Considering the ballistic performance of the fabric is related to the pull-out force of yarns in the fabric, the STF/Kevlar composite with high density woven fabrics can be a decent material for bullet-proof equipment.
초고온 호기성 퇴비화 공정의 복합 악취 및 악취 물질 평가
박세용(Park Seyong),정대혁(Jung Dai-Hyuck),유의상(Yoo Eui-Sang),김문일(Kim Moonil) 한국지반환경공학회 2009 한국지반환경공학회논문집 Vol.10 No.5
본 연구는 정읍시에서 배출되는 하수 슬러지, 축산 분뇨, 음식물 쓰레기를 대상으로 Pilot Scale(100㎥) 초고온 호기성 퇴비화 공정에서의 복합 악취 및 12개 지정 악취물질을 평가하였다. 각각의 대상 물질은 종균과 혼합하였고 1차 50일, 2차 60일 기간동안 운전하였다. 호기성 퇴비화가 진행됨에 따라 1차, 2차 퇴비화공정에서 온도가 상승하여 약 90~95℃가 되었다. 악취 분석을 위한 시료는 1차의 경우 퇴비상부에서, 2차의 경우 Pilot Plant 경계지점에서 채취하였다. 지정 악취 물질 12개 항목의 기기 분석에서 악취의 주요 원인으로는 암모니아, 메틸머캅탄, 디메틸다이설파이드, 트리메틸아민이었다. 초기 복합악취의 농도는 퇴비화 공정이 끝난 후의 농도보다 높았지만 규제기준을 넘지 않았다. 초고온 호기성 퇴비화 공정에서는 적절한 교반시점과 발효 온도가 악취 발생의 중요한 인자라고 판단된다. This study was conducted to evaluate production of complex odor and 12 specific odorous compounds in a pilot-scale (capacity : 100 ㎥) ultra thermophilic aerobic composting. There were three types input: municipal wasted sludge, livestock manure and slurry, and food waste produced in Jung-Eb city. Each raw material was mixed with seed material and operated for two periods (1st : 50 days, 2nd : 60days). During composting, the temperature hit 90~95℃ after every mixing in both periods. Therefore, it was concluded that increasing temperature also saves the time which required for composting and high reduction of organics and water contents. The primary odorous compounds were ammonia, methyl mercaltan, dimethyl disulfide and trimethylamine. The concentration of the primary compounds and complex odor during the operation were higher than those on final day and most compounds did not exceed the allowable exhaust standard for odor. Also, it was found that optimal mixing time and control of high temperature are the most important parameters for odor control in ultra thermophilic aerobic composting.
정원영,윤이나,박준호,김주혜,임대영,유의상,Jeong, Won-Young,Yoon, Yi-Na,Park, Jun-Ho,Kim, Ju-Hea,Lim, Dae-Young,Yoo, Eui-Sang 한국섬유공학회 2011 한국섬유공학회지 Vol.48 No.4
Multi-layered woven fabrics are widely used in soft body armor to provide ballistic resistance. In this study, we suggest a method to increase the energy absorption by narrow fabric effect. Five kinds of ballistic panel were prepared by cutting, slitting, and so on. The width of the strips was determined based on the size of the induced trauma (back face signature on oil clay); they were stacked at either bias or warp directions. The ballistic performance (NIJ Standard-0101.04, Type IIIA) of narrow fabrics was compared to that of wide fabric panels. Lab-scale dropping projectile and NIJ Standard tests showed that the penetration depth of the trauma was less in narrow fabrics than in wide plain fabrics. The width of the trauma was also considerably smaller than the control. It is caused by free edge effect of relatively narrow strips of woven fabrics.
UV 경화형 단량체계 실리카 분산체의 점도 특성 및 유변학적 거동
안재범 ( Jae Beon Ahn ),조봉상 ( Bong Sang Cho ),유의상 ( Eui Sang Yoo ),노시태 ( Si Tae Noh ) 한국화학공학회 2012 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.50 No.2
We made 8 wt% silica dispersion system with fumed silica and photo curable acrylic monomer by beads mill process. These dispersions could be applied in organic/inorganic hybrid coating systems. These dispersions could be applied in organic/inorganic hybrid coating systems. The 4 species of photo curable acrylic monomer which was presence of hydroxyl group, different solubility parameter, and different molecular size were used in the silica dispersions. Stability of polar solvent, isopropyl alcohol, in silica dispersions was investigated. We investigated the stability of silica dispersions by using steady-state and dynamic rheology. As the monomer has hydroxyl group increased in mono and binary monomer silica dispersions, they showed non flocculated stable sol (loss modulus (G``)> storage modulus (G`)). When polar solvent IPA was added into slightly flocculated silica dispersions, they changed to non flocculated stable sol.