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송희은(Hee-Eun Song) 한국문화역사지리학회 2007 문화 역사 지리 Vol.19 No.2
우리나라는 식민 통치라는 특수한 역사적 경험과 이후 대한민국의 건국이라는 일련의 과정을 겪었고 그 흔적들이 경관에 남아 있다. 어느 시대건 권력을 가지게 된 사람들은 상징적인 경관을 만들고 자연화(naturalizing) 시키거나 구세력의 상징물의 자연화를 뒤집음으로써(de-naturalizing) 사람들로 하여금 그들의 지배를 자연스럽게 여기도록 한다. 동시에 사람들은 텍스트 공동제를 형성하여 경관을 이해한대로 지리적 행동을 하므로 지배세력과 함께 경관 변화의 능동적 주제가 된다. 이렇듯 경관은 사회적 상호작용으로 구성되고 장소 성과 의미 역시 마찬가지이다. 특히 창경궁과 같이 상징성이 강한 경관은 권력을 가진 사람들이 활용하기 좋은 수단이므로 시대의 변화에 따라 그 의미와 성격이 크게 변화했을 것으로 예측하여 연구지역으로 삼게 되었고, 연구 과정을 통해 경관 혹은 장소의 정체성과 그 의미는 지배 세력의 교체와 텍스트 공동체의 형성에 따라 사회적으로 재구성되어 왔음을 밝힐 수 있었다. In this essay, I try to interpret the symbolic meaning of the cultural landscape of Changgyong-gnoog. The significance and meaning of landscape text has been subject to continual questioning and reinterpretation, denying the existence of anything like the original and absolute. I find out that the meaning of the palace of Changgyong, far from being constant, has changed in accordance with changing socio-political context within which both the power elite and the textual community has been laid. Those who rise to the summit of power structure create symbolic landscapes or re-create the meaning of the landscapes to do justice to their regime. Under the influence of power-holders’ strategy for naturalizing the landscape feature, Changgyong Palace has been read in their own terms and for the purpose of justifying their vested interest. In conclusion, the placeness and symbolic meaning of Changgyong-goong has been socially constructed in accordance with the ruling class’s strategy for naturalizing their political regime and with the textual communities’ way of exchanging symbolic meaning.
결정질 실리콘 태양전지 응용을 위한 PA-ALD를 이용한 Al2O3 특성 분석
송세영(Se Young Song),박제준(Je-Jun Park),강민구(Min Gu Kang),송희은(Hee-eun Song),장효식(Hyo Sik Chang) 한국태양에너지학회 2012 한국태양에너지학회 학술대회논문집 Vol.2012 No.11
Aluminum oxide(Al2O3) flim by atomic layer deposition (ALD) is known to supply excellent surface passivation properties on crystalline Si surfaces. The passivation layer with good quality is important for high-efficiency silicon solar cell. Since Al2O3 has fixed negative charge, it forms effective surface passivation by field effect passivation on the rear side in p-type silicon solar cell. However, Al2O3 by ALD process needs very long process time, which is not applicable in the conventional silicon solar cell. In this paper, plasma-assisted ALD was applied to form Al2O3 to reduce the process time. Plasma-assisted atomic layer deposition (PA-ALD) technique was used to trimethylaluminum (TMA) precursors and O2 gas plasma species leading to self limiting surface reaction. this is adopted as a promising method for growing Al2O3 thin films. To optimize the Al2O3 layer properties, the deposition temperature was changed in range of 150-250℃, then the annealing temperature and time were varied. As a result, aluminum oxide (Al2O3) flim on the silicon wafer formed in the deposition temperature, the annealing temperature and time with 250℃, 400℃ and 10 min, respectively, showed the best lifetime of 1610μs.
Thoroughbred 경주마에서 amitraz 중독증 치료 1례
양재혁,송희은,이경갑,지영흔,우호춘,임윤규,Yang, Jaehyuk,Song, Heeeun,Lee, Kyuong-Kap,Jee, Youngheun,Woo, Ho-Choon,Lim, Yoon-Kyu 대한수의학회 2010 大韓獸醫學會誌 Vol.50 No.3
A 3-year-old female Thoroughbred racehorse was presented following the accidental oral and skin administration of amitraz. This case report describes the clinical signs and the treatment of this horse. Clinical signs of amitraz toxicosis are associated with the stimulation of alpha2-adrenergic receptors. Amitraz is seldom fatal because the effects can be reversed by alpha2-adrenergic antagonists. The horse displayed typical clinical signs of colic, including pawing, small hard drops, tranquillisation, depression, ataxia, muscular incoordination and impaction colic lasting up to 7 days. The syndrome was accompanied by mild dehydration. The horse survived after persistent symptomatic treatment, including the giving of intravenous fluids, antibiotics, multiple doses of mineral oil per os, nonsteroidal anti-inflammatory drugs and dexamethasone intramuscularly and intravenously.
결정질 실리콘 태양전지를 위한 PA-ALD Al<sub>2</sub>O<sub>3</sub> 막의 패시베이션 효과 향상 연구
송세영,강민구,송희은,장효식,Song, Se Young,Kang, Min Gu,Song, Hee-Eun,Chang, Hyo Sik 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.10
Aluminum oxide($Al_2O_3$) film deposited by atomic layer deposition (ALD) is known to supply excellent surface passivation properties on crystalline Si surfaces. Since $Al_2O_3$ has fixed negative charge, it forms effective surface passivation by field effect passivation on the rear side in p-type silicon solar cell. However, $Al_2O_3$ layer formed by ALD process needs very long process time, which is not applicable in mass production of silicon solar cells. In this paper, plasma-assisted ALD(PA-ALD) was applied to form $Al_2O_3$ to reduce the process time. $Al_2O_3$ synthesized by ALD on c-Si (100) wafers contains a very thin interfacial $SiO_2$ layer, which was confirmed by FTIR and TEM. To improve passivation quality of $Al_2O_3$ layer, the deposition temperature was changed in range of $150{\sim}350^{\circ}C$, then the annealing temperature and time were varied. As a result, the silicon wafer with aluminum oxide film formed in $250^{\circ}C$, $400^{\circ}C$ and 10 min for the deposition temperature, the annealing temperature and time, respectively, showed the best lifetime of 1.6ms. We also observed blistering with nanometer size during firing of $Al_2O_3$ deposited on p-type silicon.
박광희고,김영심,송희은,박준우,Park, Gwang Hui Go,Kim, Yeong Sim,Song, Hui Eun,Park, Jun U Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.11
$\beta-Cyclodextrin$ derivatives connected with diaza-18-crown-6 through flexible bridges (R) at the secondary face 1a-c (1a: R = $-(CH_2)4-;$ 1b: R = $-CH_2CH_2OCH_2CH2-;$ 1c: R = $-(CH_2)8-)$ have been prepared. The associa tion constants of 1 with (2-naphthoxy)alkylammonium ions (2a: alkyl = butyl; 2b: alkyl = octyl) were determined by induced circular dichroism (ICD) spectroscopy and it was found that the derivatization of $\beta-CD$ with the diazacrown resulted in enhanced binding with 2, compared to the native $\beta-CD.$ ICD Characteristics of the host-guest complexes indicate that a part of the alkylammonium moiety of 2 is protruded from the secondary side of the $\beta-CD$ cavity, and the guest molecules 2a and 2b move to the secondary and primary side, respectively, to make the binding of the ammonium group with the diaza-18-crown-6 moiety more feasible. The energy accompanied by the relocation of the guest molecules inside $\beta-CD$ moiety is compensated by the interaction energy between the ammonium ion and diazacrown ether.
결정질 실리콘 태양전지의 도핑 최적화를 위한 선 증착 온도에 대한 연구
최성진(Choi Sung-Jin),송희은(Song Hee-Eun),유권종(Yoo Kwon-Jong),유진수(Yoo Jin-Soo),한규민(Han Kyu-Min),권준영(Kwon Jun-Young),이희덕(Lee Hi-Deok) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11
In this paper, the optimized doping condition of mono crystalline silicon solar cells with 156 × 156 ㎟ area was studied. To optimize the pre-deposition temperature in the doping process, the other conditions except variable pre-deposition temperature were fixed. These conditions were obtained in previous studies. After etching 7 μm of the surface to form the pyramidal structure, pre-deposition temperature was changed in range of 780 ℃ to 820 ℃ with 10 ℃ increment and drive-in temperature were fixed at 865 ℃. The silicon nitride deposited by the PECVD had 75 nm thickness with 2-2.1 refractive index. The silver and aluminium electrodes for front and back sheet, respectively, were formed by screen-printing method, followed by firing in 400-425-450-550-880 ℃ five-zone temperature conditions to make the ohmic contact. Mono crystalline silicon solar cell made in 790 ℃ as the pre-deposition temperature revealed 16.9 % conversion efficiency which was best in this study. This solar cells showed 34.78 ㎃/㎠ of the current density, 629 ㎷ of the open circuit voltage and 77.1 % of the fill factor.
결정질 실리콘 태양전지에서 도금을 이용한 전극 형성 시 발생되는 레이저 손상 제거
정명상,강민구,이정인,송희은,Jeong, Myeong Sang,Kang, Min Gu,Lee, Jeong In,Song, Hee-eun 한국전기전자재료학회 2016 전기전자재료학회논문지 Vol.29 No.6
In this paper, we investigated the electrical properties of crystalline silicon solar cell fabricated with Ni/Cu/Ag plating. The laser process was used to ablate silicon nitride layer as well as to form the selective emitter. Phosphoric acid layer was spin-coated to prevent damage caused by laser and formed selective emitter during laser process. As a result, the contact resistance was decreased by lower sheet resistance in electrode region. Low sheet resistance was obtained by increasing laser current, but efficiency and open circuit voltage were decreased by damage on the wafer surface. KOH treatment was used to remove the laser damage on the silicon surface prior to metalization of the front electrode by Ni/Cu/Ag plating. Ni and Cu were plated for each 4 minutes and 16 minutes and very thin layer of Ag with $1{\mu}m$ thickness was plated onto Ni/Cu electrode for 30 seconds to prevent oxidation of the electrode. The silicon solar cells with KOH treatment showed the 0.2% improved efficiency compared to those without treatment.