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전도성 고분자 센서 어레이를 이용한 휘발성 유기 화합물 가스 인식
이경문,주병수,유준부,황하룡,이병수,이덕동,변형기,허증수 한국센서학회 2002 센서학회지 Vol.11 No.5
휘발성 유기 화합물 가스(Volatile Organic Compounds)를 인식하고 분석하기 위하여 전도성 고분자 센서어레이를 이용한 시스템을 제작하였다. Polypyrrole와 Polyaniline을 화학중합법으로 센서에 전도성고분자막을 형성하였고 이를 통해 VOC 검지용 센서 어레이를 제작하였다. 센서어레이로부터 측정되는 다차원 데이터는 주성분분석법(PCA)과 RBF(Radial Basis Function Network)을 이용하였다. 제안된 시스템으로 VOCs 가스를 인식하는데 있어서 RBF Network이 PCA방식보다 더욱 효율적인 것으로 판단되었다. We fabricated gas recognition system using conducting polymer sensor array for recognizing and analyzing VOCs(Volatile Organic Compounds) gases. The polypyrrole and polyaniline thin film sensors which were made by chemical polymerization were employed to detect VOCs. The multi-dimensional sensor signals obtained from the sensor array were analyzed using PCA(principal component analysis) technique and RBF(radial basis function) Network. Throughout the experimental trails, we confirmed that RBF Network is effective than PCA technique in identifying VOCs.
Ha, Su Ryong,Park, Sumin,Oh, Jae Taek,Kim, Do Hui,Cho, Shinuk,Bae, Sung Yong,Kang, Dong-Won,Kim, Jong-Man,Choi, Hyosung The Royal Society of Chemistry 2018 Nanoscale Vol.10 No.27
<P>We demonstrated a water-resistant PEDOT:PSS HTL by incorporating a photo-crosslinking agent into a PEDOT:PSS film. A crosslinking system was successfully formed inside the PEDOT:PSS film by simple and fast photo-polymerization of PCDSA monomers. Combination of the crosslinking system and MeOH surface treatment simultaneously improved the device efficiency and stability of both perovskite and polymer solar cells. The crosslinking system inside PEDOT:PSS changed its intrinsic water-soluble characteristic into a water-resistant property, thus preventing water penetration into the PEDOT:PSS film. In addition, MeOH treatment improved the surface conductivity and reduced the surface roughness of the PEDOT:PSS film by removing surface residues of PDAs and insulating PSS parts.</P>
하경임,전동석,김재룡,현정애,전종찬 啓明大學校 醫科大學 1988 계명의대학술지 Vol.7 No.1
Normal human serum and tissue, except testis, show five lactate dehydrogenase isoenzymes on electrophoresis. An unusual band on the cathodic side of LD?? isoezyme has been found on lcatate dehydrogenase eletrophoresis of serum, called LD??, and the presence of which signifies a poor prognosis for the patients. The autors experience one case of LD?? Extraband in 61-year-old female patient suffered from rheumatic heart disease combined with aortic stenosis and regurgitation, congestive heart failure and pulmonary edema. Cardiac arrest was noted within several hours after exhibition of LD?? Extraband and she did not recover from her illness, so we report with brief review of literatures.
Dong-Jae Seong,Seoung-Jin Hong,Seung-Ryong Ha,Young-Gi Hong,Hyo-Won Kim 대한치과보철학회 2016 The Journal of Advanced Prosthodontics Vol.8 No.5
Patients who underwent resection of maxilla due to benign or malignant tumor, or accident will have defect in palatal area. They get retention, support and stability from remaining tissues which are hardly optimal. The advantage of swing-lock attachment design is having multiple contacts on labial and lingual side of the abutment teeth by retentive strut and palatal bracing component. Because the force is distributed equally to abutment teeth, abutment teeth of poor prognosis can be benefited from it. It is also more advantageous to cover soft tissue defects which are hard to reach with conventional prosthesis. A 56-year-old female patient who had undergone a maxillectomy due to malignant melanoma complaining of loose and unstable surgical obturator. Surveyed crowns were placed on #12, 26, and 27. Teeth #11, 21, 22, and 23 had lingual rest seat and #24 had mesial rest seat to improve stability and support of the obturator. This clinical report presents the prosthetic management of a patient treated with obturator on the maxilla using swing-lock attachment to the remaining teeth.
Seong, Dong-Jae,Hong, Seoung-Jin,Ha, Seung-Ryong,Hong, Young-Gi,Kim, Hyo-Won The Korean Academy of Prosthodonitics 2016 The Journal of Advanced Prosthodontics Vol.8 No.5
Patients who underwent resection of maxilla due to benign or malignant tumor, or accident will have defect in palatal area. They get retention, support and stability from remaining tissues which are hardly optimal. The advantage of swing-lock attachment design is having multiple contacts on labial and lingual side of the abutment teeth by retentive strut and palatal bracing component. Because the force is distributed equally to abutment teeth, abutment teeth of poor prognosis can be benefited from it. It is also more advantageous to cover soft tissue defects which are hard to reach with conventional prosthesis. A 56-year-old female patient who had undergone a maxillectomy due to malignant melanoma complaining of loose and unstable surgical obturator. Surveyed crowns were placed on #12, 26, and 27. Teeth #11, 21, 22, and 23 had lingual rest seat and #24 had mesial rest seat to improve stability and support of the obturator. This clinical report presents the prosthetic management of a patient treated with obturator on the maxilla using swing-lock attachment to the remaining teeth.
HMR 외식소비성향이 지각된 유용성 및 행동의도에 미치는 영향
하동희(Ha, Dong-Hee),이형룡(Lee, Hyung-Ryong) 한국외식경영학회 2017 외식경영연구 Vol.20 No.5
본 연구는 1인 가구, 맞벌이 가구 및 여성의 경제 참여율 증가에 사회 구조적인 변화로 인한 지속적으로 성장하고 있는 HMR에 관한 외식소비자들의 소비행동에 대해 살펴보았다. 이에 본 연구는 HMR에 대한 구매 경험이 있는 외식소비자를 대상으로 11월 초에 1주일간 자기기입식과 온라인 설문을 통해서 진행되었다. 본 연구의 가설 검증을 위해서 확인적 요인분석을 통해서 측정도구의 타당성 및 적합성, 모형의 적합도가 판명되었으며, Cronbach s Alpha 값 또한 기준치에 만족할 만한 수준의 결과를 보여 변수의 신뢰성이 검증되었다. 단순회귀분석, 다중회귀분 석을 통한 변수간의 관계를 파악하였다. 그리고 지각된 위험은 위계적 회귀분석을 실시하여 외식소비성향과 지각된 유용성의 사이에서 조절효과가 있다고 나타났으며, 지각된 유용성과 행동의도 사이에서 지각된 위험이 조절효과가 있다는 결과를 도출하였다. 이에 HMR에 관한 외식소비성향의 세부적인 요인을 파악하고 이해하 는데 도움을 주고, HMR 외식소비자들에 대한 행동의도를 이해를 증진시켜 이익을 극대화 할 수 있도록 업계와 학계에 의미 있는 시사점을 제시하고자 한다. Based on literature review and an empirical study, this study aimed to find out the relationship of food service consumption propensity of HMR, perceived usefulness, and behavioral intention, and examine the moderating effect of perceived risk on this relationship. Thus, this study conducted the self-administered/online survey for a week in the early November, targeting food service consumers with experiences in purchasing HMR. The relations between variables were understood through the multiple regression analysis. Through hierarchial regression analysis, the perceived risk showed moderating effects between food service consumption propensity and the perceived usefulness while the perceived risk had moderating effects between the perceived usefulness and behavioral intention. Based on the findings discussed above, implications for practitioners and researchers are stated.