폴리아닐린을 이용한 전기변색소자의 제작 및 특성

오응주,이경민,민혜경,노성변,서정선 명지대학교 자연과학연구소 1995 자연과학논문집 Vol.12 No.-

ITO/폴리아닐린/고분자고체전해질/ITO구조의 전기변색소자가 제작되었다.IM p-toluenesulfonic acid 용액내에서 0.7V의 전압하에 potentiostaic method로 아닐린을 전기화학적으로 중합하여 salt form의 폴리아닐린을 ITO glass 위에 deposite시켰다.또한 화학적으로 합성한 base form의 폴리아닐린을 10? torr의 압력하에 진공승화법에 의해 ITO glass 위에 증착시켰다. PEI(polyethyleneimine)과 2-acrylamido-2-methyl-propanesulfonic acid 를 이용하여 고분자 고체전해질을 제조하였다. 제작된 ITO/polyaniline salt/고분자고체전해질/ITO 구조의 전기변색소자는 인가전압 -2.0V~+2.OV의 영역에서 무색에서 푸른색을 나타내었다.Potential pulse를 통하여 측정된 이들 변색소자의 cyvlic number 는 10? 이상으로 나타났고, 응답시간은 50ms로 생기는 전자전이를 통하여 색의 변화를 알 수 있었다. 또한 각각 변색물질로 폴리아닐린 salt 와 base를 사용하여 제작된 변색소자의 경우 I-V곡선은 counter 이온인 SO?-의 발생확률에 따라 다른 곡선을 나타내었다. Electrochromic devices(ECD) with ITO/polyaniline/polymer solid electrolyte /ITO structure were fabricated . In these devices both of poyaniline salt and base forms were deposited onto ITO conducting glass substrate by electrochemical and vacuum sublimation method, respectively, Polymer solid electrolye were prepared by the reaction of polyethyleneimine with 2-acrylamido-2-methyl-propanesulfonic acid . ECDs based on polyaniline salt showed color change from colirless to blue in the range of applied voltage of -2.OV ~+2.0V.Cyclic number and response time of these devices appear to be 10? and 50ms respectively. The color change which is relatd to teh electronic transition by the variation of electron density was observed from the UV/Vis. spectra measurement. I-V curves for ECDs based on polyaniline salt and base repectively shoe different behaviors due to the different degree of contribution of SO?- ion as a counterion for each case.

八味地黃湯 煎湯液의 投與가 마우스의 自然致死 細胞의 活性度 및 免疫反應에 미치는 影響

朱松竹,李彦政,吳昇煥 圓光大學校 韓醫學硏究所 1992 원광한의학 Vol.2 No.1

This study was done to know the effects of Palmijihwangtang(八味地黃湯) on the cytotoxic activity of NK cells, the phagocytic activity of macrophages, the antibody production of B cells, and delayed-type hypersensitivity reaction by T cells in the mouse. The results were as follows. 1. The administration of Palmijihwangtang enhanced the cytotoxic activity of NK cells against YAC-1 cells. 2. The administration on Palmijihwangtang increased the production of reactive oxygen intermediate(ROI) production from macrophages without any effect on phagocytic activity. 3. The administration of Palmijihwangtang decreased the delayed-type hypersensitivity against dinitrochlorobenzene without affecting T cell subtypes. 4. The administration of Palmijihwangtang increased the antibody production against sheep red blood cells. The above results suggest that Palmijihwangtang could be used for the prevention and treatment of the diseases caused by the abnormalties of the body's immune functions.

하악골 골절에 대한 임상통계학적 연구

이성훈,김기영,조규승,소광섭,박홍주,조요기,오희균,유선열 大韓顎顔面成形再建外科學會 1998 Maxillofacial Plastic Reconstructive Surgery Vol.20 No.1

Hg₁-xMnxTe산화막의 홀효과에 관한 연구

오재근,최기영,송재흥,김영국,채건식,주유환,설정식,손인호,차성극,이상찬 慶南大學校 附設 基礎科學硏究所 1996 硏究論文集 Vol.8 No.-

HClO₄(pH:2) 수용액에서 양극산화 방법으로 HgMnTe(HMT)의 표면에 산화막을 형성 시켰다. 산화막의 두께는 SEM으로 측정하였으며 10㎛였다. 전류-전압 특성곡선을 얻어 산화 피크 전압으로부터 HTeO₂?, TeO?, HHgO₂? 막이 형성되었음을 알 수 있었다. 산화시키지 않은 HMT와 HClO₄수용액에서 산화시킨 HMT에 대해 Hall전압 및 자기저항을 각각 측정하였다. 홀전압과 자기저항은 HMT보다 HMT산화막에서 더 컸으며 이것은 HHgO₂? 공격자가 홀의 역할을 하고, TeO₄? 산화막은 전하의 포획도를 낮게하기 때문으로 생각할 수 있다. Anodic oxidation processes on HgMnTe surface has been studied in standard aqueous HClO₄(pH:2) solution. The 10㎛ thickness of the anodic oxide layers was measured by SEM. The Composition of the anodic oxide layers are evaluated from current-voltage(I-V) characteristic of HgMnTe Oxidation. The layers are composed of mixed oxide. ??, TeO₄, and?? in HClO₄solution. Transport properties have been investigated in HMT oxide layer made in HClO₄solution and virgin HMT samples at 300K. Hall voltage and magnetoresistance are greater in oxide layer HMT than virgin HMT. As a result, we know that the vacancy of ??in an anodic oxide layer acts as hole and the resulting oxide ?? layer exhibit a reduced degree of charge trapping and increase magnetoresistance.

偏心荷重을 받는 基礎構造物의 安定性에 關한 信賴度 解析

裵主星,吳秉炫 全北大學校 1994 論文集 Vol.38 No.-

In the stability analysis of eccentrically loaded foundation, soil properties and loads involve many uncertainties so it is necessary to do stability analysis of foundation that considers the probabilistic properties of each variable. This study is performed to reliability analysis for bearing capacity and settlement of eccentrically loaded foundation by using Monte Carlo Simulation Method. To consider the uncertainty of variables, the soil properties and loads and eccentric length are assumed to be normal distribution random variables. Then it is performed to do sensitivity analysis which is involved to failure probability of bearing capacity and excess probability of allowable criteria of settlement according to varity of each variable. It is thought to be proper that the stability analysis of eccentrically loaded shallow foundation should be analyzed considering uncertainty of variables.

이온교환법에 의한 고분자전해질형 연료전지용 전극의 제조와 특성 고찰

이주성,박수길,오태영,이홍기,심중표 한양대학교 에너지.환경기술연구소 1995 에너지·環境技術論文集 Vol.2 No.-

고분자전해질형 연료전지용 전극의 백금 이용률을 높이기 위해 촉매제조시 이온교환법을 이용하여 백금을 carbon에 담지하고 이에 따른 전지성능변화를 고찰하였다. 전극제조시 Nafion이 첨가되지 않은 경우 이온교환양이 증가함에 따라 전기화학적인 활성이 증가하여 전지성능이 증가하였다. 전극제조시 Nafion이 첨가된 경우, Nafion첨가량이 증가함에 따라 전지성능은 증가하였는 데 Nafin첨가에 의해 이온교환되지 않은 백금이 전기화학적인 활성을 가지게 되어 전지성능은 증가하였다. To improve platinum utilization of PEMFC(Proton exchange membrane fuel cell) electrode, in preparing catalytic powder, platinum was impregnated on carbon by ion exchange method and its cell performance was investigated. When electrode was prepared without adding Nafion solution, as Nafion pre-impregnated amount was increased, electrochemically active area and cell performance was increased. When electrode was prepared with Nafion solution, increase of adding Nafion amount was improvement of cell performance. By adding Nafion at preparation of electrode, non ion-exchange platinum was shown electrochemical activity, cell performance was improved.

合紙數가 壯版紙의 品質에 미치는 影響

金成柱,全哲,吳正壽 동국대학교 생명자원과학대학 연습림 1993 연습림논문집 Vol.- No.3

This study was carried out to investgate the true appreciation of Changphanji’s quality trading in Cheonju now by means of a physical and chemical tests. The results obtained were as follows: 1. The average density of the Changphanji was 1.05g/㎤, to obtain the uniformity of Changphanji it will be requested the technical improvement of manufacturing process. And it’s quality will be graded by cohesiveness and physical test values. 2. In consideration of the Changphanji’s characteristics, it will be raised contents of the vergin pulps and requested the mixing technogy from bast fiber of paper mulberry. 3. Changphanji’s internal­size were used rosin size and surface­size used fish defective oil that smells of bet. 4. The wet tensile strength of 3­fold sheet and special sheet Changphanji were superior to other and the elongation ratios of 4­fold sheet were best highed so that special sheet Changphanji were not superior to others. 5. Ring crush strength and water vapor weight were excellent in order of 4­fold sheet, special sheet, 3­fold sheet, 2­fold sheet Changphanji. 6. To the result of this experiments, we know that the quality of Changphanji were excellent in order of 4­fold sheet, special sheet, 3­fold sheet Changphanji. Trading Changphanji’s quality were graded by thickness and external appearance only.

Squalene Adjuvant를 이용한 단백질 항원의 세포성 면역반응 유도

도현주,김성열,안종성,하영주,이승찬,오재택,장명호,정홍석,문홍모,박해준 大韓免疫學會 1996 大韓免疫學會誌 Vol.18 No.3

To investigate the role of adjuvant for cytotoxic T lymphocytes (CTL) induction, squalene-based adjuvant was studied its capability eliciting to the induction of cellular immunity as well as humoral immunity to exogeneous proteins. Ovalbumin (OVA) was used as model proteins. It was demonstrated that antigen formulation consisted of metabolizable oil squalene mixed with Tween 80 and pluronic L121 (S/TJ121) could induced the antigen specific CTL responses and antibodies irrespective of immunization routes in mice. We also demonstrated that this antigen formulation was a inducer of CD8+, major histocompatibility complex(MHC) class I-restricted, and antigen-specific C;1'Ls. These data suggest that the squalene-based emulsion system is a potent adjuvant inducing cellular immunity as well as humoral immunity.

두개내에 발생한 형질세포육아종 (Plasma Cell Granloma) 2예

천대웅,주성민,김후원,김병기,안병철,오건세,양기화 대한신경과학회 1999 대한신경과학회지 Vol.17 No.3

맥주맥 F_1세대의 조합능력 검정

정원복,오주성,황필성,김수동,서세정,현종내,김대호 東亞大學校 2002 東亞論叢 Vol.39 No.-

맥주맥의 이면교잡에 의한 F_1세대에 대한 조합능력을 검정한 결과를 요약하면 다음과 같다. 8개 형질에 대한 GCA, SCA, RCA효과를 검정한 바 조합능력은 전 형질에서 GCA, SCA, RCA가 모두 유의하였는데 간장, 수장, 망장, 간직경, 곡핍폭, 1수립수 1000립중은 GCA가 SCA보다 크고, 품종간 GCA효과는 진양보리가 간장에서 부(-)이고, 삼도보리가 수장·망장·간직경·1000립중에서, 사천6호가 망장과 간직경에서, 진광보리가 곡립장에서, 두산29호가 곡립폭·1수립수·1000립중에서 각각 정(+)으로 높았다. SCA효과에서 수장은 두산29호×두산8호 조합이, 망장은 진양보리×두산29호 조합이, 간직경은 사천6호×진광보리 조합이, 곡립장은 진양보리×두산8호 조합이, 곡립폭은 진광보리×두산8호 조합이, 1수립수는 진양보리×삼도보리 조합이, 1000립중은 사천6호×두산8호 조합 및 두산29호×두산8호 조합이 각각 정으로 높았고, 간장은 삼도보리×진광보리 조합이 부로서 높았다. RCA효과에서 수장은 두산8호×남향보리 조합이, 망장은 진양보리×삼도보리 조합이, 간직겨은 사천6호×진양보리 조합이, 곡립장은 사천6호×진광보리 조합이, 곡립폭은 진양보리×삼도보리 조합이, 1수립수는 사천6호×두산29호 조합이, 1000립중은 진양보리×두산29호 조합이 각각 정으로 높았고, 간장은 사천6호×두산29호 조합이 부로서 높았다. Seven barley varieties in F_1 generation of the possible crosses among them were used to estimate the combining ability for eight characters, i.e., culm length, spike length, awn length, culm diameter, grain length, grain width, number of grains per spike and 1000 grains weight. Data for F_1 hybrid and parents were subjected to the analysis method proposed by Griffing. The results obtained were summarized as follows. mean squares of general combining ability(GCA), specific combining ability(SCA) and reciprocal combining ability(RCA) were significant for all characters observed. Mean squares of GCA were higher than those of SCA and RCA in culm length, spike length, awn length, culm diameter, grain width, number of grains per spike and 1000 grains weight. Variety Dusan#29 showed the highest GCA effect for number of grains per spike and positively high effects of GCA were observed from variety Samdo bori in spike length, awn length, culm diameter, 1000 grains weight, and from variety Jinkwang bori I grain length, from Dusan#29 in grain width, umber of grains per spike, 1000 grains weight. Also Jinyang bori showed negatively high GCA effect in culm length. In SCA effects, hybrids in Jinyang bori × Samdo bori were exhibited positively high for number of grains per spike and high SCA effects for 1000 grins weight were found positively in Sacheun#6×Dusan#8 and Dusan#29×Dusan#. In RCA effects, hybrids in Sacheun#6×Dusan#29 were exhibited positively high for number of grains per spike and high RCA effects for 1000 grains weight were found positively in Jinyang bori×Dusan#29.