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임내규,홍기천,오일석 全北大學校 敎育大學院 2000 敎育論叢 Vol.20 No.-
One of the recent prominent features of Korean Middle and High school students is the lack of emotional stability. This is partly due to the current educational system which is mainly focused on the entrance examination for Colleges or Universities. So this paper emphasizes the importance of Korean youth's emotional aspects and presents a courseware program which can be effectively utilized on the actual education fields by students and teachers. Additionally it provides various knowledges for growing the plants, biological structures of several parts of plants and so on. We believe that the program contributes significantly to Korean educations with respect to the cultivation of Korean youth's emotions.
전방향족 폴리에스테르의 열적거동에 미치는 주사슬의 메소겐 단위와 곁사슬의 효과
全昌林,朴來正 弘益大學校 科學技術硏究所 1995 科學技術硏究論文集 Vol.6 No.-
The effect of a mesogenic unit and side chains in the main chain on the thermal behavior of wholly aromatic polyesters was studied. The diiodide monomers appended with p-dimethyl or p-didodecyloxy groups were successfully synthesized. Then the polyesters were synthesized by CO carbonylation of the aromatic diiodides with side chains and aromatic diols such as hydroquinone and 4.4′-propylidenediphenol in the presence of palladium catalyst. When the isopropylidene group was introduced as a mesogenic unit, significant decreases in melting points as well as decomposition temperatures of the polyesters were observed. Introduction of alkyl or alkoxy chains on the phenyl group of the main chain also significantly decreased the melting points as well as decomposition temperatures of polyesters. Fully aromatic polyesters that isopropylidene group was introduced on main chain and decyloxy group was substituted on 2,5-position of phenylene group, showed the decrease in melting temperatures from 340℃ to 138℃ and in decomposition temperatures from 571℃ to 423℃.
다변량 Calibration 문제에서 영향을 크게주는 관찰치의 검색
박래현,임재학 충남대학교 자연과학연구소 1988 忠南科學硏究誌 Vol.15 No.1
This study deals with the measure of detecting influential observation in multivariate calibration model. The proposed measure considers every possible values which the calibrative distance have, whereas the statistic suggested by Oman(1984) in simple linear calibration model considers the worst case only. We also extend Cook's statistic to the multivariate case and suggest a new statistic which is a contrast to the Cook's idea. Finally we derive some computing formula to calculate the suggest statistics easily in the numerical data and apply these to an example.
黃連 中 protoberberine의 分離同定에 관한 硏究
이내홍,김영일,임종필,엄동옥 우석대학교 의약품개발연구소 1997 藥學硏究誌 Vol.2 No.-
Tetrathiocyanatocobaltate(Ⅱ) ion is capable to complex compounds with tertiary amine salts or quarternary ammonium salts. And these complex compouds, no soluble in water, are expracted into organic phase, the same as 1,2-dichloroethane, chloroform and dichloromethane. In the investigation of the identification of protoberberine, three compounds were separated by TLC following complex reaction inter protoberberine-TCR. The solution of n-buthanol: acetic acid: water(7:1:2) was eluted on the silica gel plate. In elution of standard solution, the Rf of berberine chloride and palmatine chloride were shown for two compounds smong the three compounds in the case of Coptidis Rhizoma as 0.52 and 0.42, respectively. In order to obtain the information of the third, each compound was also separated with column chromatography as same conditions as TLC and evaluated with IR and mass spectra. As the rsults were showed that the third compound was coptisine, as the moleculer weight was 320.
Heck 반응에 의한 전방향족 Polyester의 합성
全昌林,朴來正 홍익대학교 산업기술연구소 1996 産業技術 Vol.6 No.-
Polyesters was synthesized by palladium catalyst under carbon monoxide from diiodophenylene monomers and hydroquinone. This polymerization have been reported the shortcoming of small molecular weight below 3,000. In this study, we carried out optimization for increasing the molecular weight, then we obtained the polyesters with the molecular weight 10,000 in our condition. We have been studied the effects of various parameters, such as the reaction temperature, type of solvent, type of base and the pressure of carbon monoxide. We have obtained the polymers with highest molecular weight under conditions as follow chlorobenzene as solvent, DBU as base, 120℃ of reaction temperture and 5 atm of carbon monoxide prossure.
환경친화적인 무기/유기 Core-Shell의 제조에 관한 연구
설수덕,임재길,임종민,권재범,이내우 한국안전학회 2004 한국안전학회지 Vol.19 No.1
Composite particles using inorganic and organic chemicals were synthesized and the results of those reaction were compared to variation of temperature and agitation speed in presence of CaCO₃ which was adsorbed SDBS. Also the synthesises were optimized according to conversion rate of composite particles. In inorganic/organic core-shell composite particle polymerization, CaCO₃ adsorbed by 0.5wt% surfactant SDBS was prepared initially and then core CaCO₃ was encapsulated by sequential emulsion polymerization using MMA at the addition of APS 3.16X 10^(-3)mo1/L to minimize the coagulated PMMA particle itself during MMA shell polymerization. Encapsulated PMMA on CaCO₃ as inorganic/organic core-shell particles was verified by Fr-IR and DSC analysis. It was found that the CaCO₃ was very well encapsulated by PMMA as shell. The surfaces were distinctly found as spindle shape and broad particle distribution after capsulation.
Highly sensitive, tunable, and durable gold nanosheet strain sensors for human motion detection
Lim, Guh-Hwan,Lee, Nae-Eung,Lim, Byungkwon The Royal Society of Chemistry 2016 Journal of Materials Chemistry C Vol.4 No.24
<P>We report highly sensitive, tunable, and durable strain sensors based on a simple structure consisting of a multilayered film of gold (Au) nanosheets as a sensing layer on a highly stretchable Ecoflex substrate. The high sensitivity of the sensor at different levels of strain was achieved by controlling the stacking number of micrometer-sized Au nanosheets with a thickness of ∼20 nm, which enabled the control of piezoresisitivity of the sensing layer through the change in contact resistance between Au nanosheets under mechanical bending and stretching. The Au nanosheet-based strain sensors exhibited excellent electrical stability without degradation in sensing-performance even after 10 000 stretching cycles. Our highly sensitive, reproducible, tunable, and durable strain sensors were demonstrated to monitor large-scale body motions such as bending, walking, jumping, and squatting, as well as to detect small skin strains induced by minute movements of muscles upon breathing, speaking, and coughing.</P>
프로스포츠 종목별 사회적 책임활동에 대한 소비자태도 분석 : 프로야구와 프로축구의 차이
임내락(Lim Nae-Rack),김일광(Kim Ill-Gwang) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.4
The purpose of this study was to identify The analysis on consumer attitude through a professional sports team association's corporate social responsibility activities : focused on difference between baseball and soccer. In order to achieve this goal, 574 baseball and soccer's spectators were selected by the convenience sampling method in 2009 season. The instrument for data collection was a questionnaire that was previously inspected by experts and later found to have Cronbach's alpha values ranging from .796 to .962. The data were analyzed by using Window SPSS ver. 15.0 and AMOS 7.0 program and by conducting descriptive analyses, confirmation factor analysis to identify the fit degree of factors, structural equation model, and multiple group analysis. The results are follows: First, soccer group more recognizes the team image in the CSR activities, team reputation in team image, and behavior loyalty in team reputation than baseball group. second, baseball group more influence team reputation by CSR activities, and behavior loyalty by team image than soccer group.
편평상피폐암에서 암억제유전자 RASSF1A의 메틸화와 임상 및 병리소견과의 연관성
최내윤 ( Nae Yun Choi ),이혜숙 ( Hye Sook Lee ),송인승 ( In Seung Song ),임유성 ( Yu Sung Lim ),손대순 ( Dae Soon Son ),임대식 ( Dae Sik Lim ),최용수 ( Yong Soo Choi ),김진국 ( Jhin Gook Kim ),김호중 ( Ho Joong Kim ) 대한결핵 및 호흡기학회 2004 Tuberculosis and Respiratory Diseases Vol.57 No.3
Single-Stage PFC AC/DC Full Bridge Converter의 소프트 스위칭에 관한 연구
임경내(Kyoung-Nae Lim),성병기(Beang-Gee Sung),계문호(Moon-Ho Kye),권순재(Soon-Jae Kwon),김철우(Cheul-U Kim) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
This paper proposes a new soft switching single stage AC/DC full bridge converter with unit power factor and isolated output. This circuit shows that it is possible to combine the boost converter which is for PFC(Power Factor Correction) and full bridge converter which is for DC/DC converter. A simple auxiliary circuit which includes neither lossy components nor active switches eliminates ringing of secondary side of the transformer. The characteristics of proposed circuit are investigated and the validity is verified by the simulation results.<br/> <br/>