Synthesis and Characterization of Hole Transporting Polymers Containing Alternating Carbazole and Triarylamine Groups for ssDSSC

정수란,전솔민,( Nguyen Van Nga ),권영환 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1

The carbazole-base derivative is attracting the interest of scientist and shows good properties such as low cost, lightweight, and high mobility that can meet the solar cell device requirements. In this study, poly{bis[6-N-(2-ethylhexyloxylphenyl)-carbazole-3-yl]-alt-aniline} (EHOPCA) and poly{[N-(2-ethylhexyloxylphenyl)-3,6-carbazole]-alt-[N- (4-aminophenyl)carbazole]} (EHOPCAPC) were synthesized and applied to ssDSSC as HTM. The monomers were synthesized and identified by using 1H and 13C NMR. The polymers were synthesized by Pd-catalyzed polycondensation method and fractionated using chloroform/methanol to purify the polymers with the yield around 84.8 % and 34.0 % for EHOPCA and EHOPCAPC. Molecular weight, polydispersity, photophysical and elecltrochemical properties of the polymers were also analyzed. Finally, The polymers were used to apply as HTM to the ssDSSC and investigate the performance of ssDSSC.

[소학교교원연단]나는 꼬마황제가 아니야

정수란 길림성민족사무위원회 1993 중국조선어문 Vol.66 No.-

실험실 규모 유동층 반응기를 이용한 우분 연소 특성

정수화(Soo-Hwa Jeong),정재용(Jae-Yong Jeong),이은도(Uen-Do Lee) 한국열환경공학회 2019 한국열환경공학회 학술대회지 Vol.2019 No.춘계

국내 가축분뇨 발생량은 점점 증가하고 있으나 토양의 영양과잉에 의하여 퇴비화도 어렵게 될 예정이다. 따라서 가축분뇨를 고체 연료화하여 에너지화하기 위한 노력들이 최근에 많이 진행되고 있다. 본 연구에서는 실험실 규모의 유동층 반응기를 이용하여 건조 우분의 연소를 통해서 배가스 특성 및 반응기 내 연소 장애 현상을 살펴보았다. 연소 실험에서 공기비는 1.3-1.5의 범위로 하였고 반응 온도는 750-800 oC 범위에서 진행하였다. 연소 실험 결과 가스상 오염물질인 NOx는 400-800 ppm까지 검출되었으며 SOx는 검출되지 않았다. 반응기 내 연소 장애 현상을 보기 위하여 KOH를 시료에 첨가하여 연소한 결과 agglomeration 현상이 발생하는 것으로 나타났다.

코로나19 팬데믹 상황에서 해부학 실습에 대한 학생들의 반응

정수정(Soo-Jung Jung),박광락(Kwangrak Park),이재호(Jae-Ho Lee) 대한체질인류학회 2021 해부·생물인류학 (Anat Biol Anthropol) Vol.34 No.2

지난 2020년 갑작스러운 코로나19 전파로 인해 의과대학의 강의를 진행하는데 어려움이 있었다. 이에 많은 의과대학들이 지역의 현황과 방역수칙에 맞추어 실습을 진행하거나 실습대체인 강의를 통해 해부학 실습을 진행하였다. 이에 본 연구에서는 다양한 실습 방법에 따른 감염에 대한 불안감과 만족도를 학생들의 반응을 조사하였다. 총 314명의 의과대학 학생들이 설문에 참여하였는데, 222명의 학생들이 실습을 하였고, 반을 나누거나 (56%), 실습시간을 줄여서 진행된 경우가 (54%) 많았다. 실습을 진행하지 않은 경우, 연기 (50%) 또는 폐지 (28%)되었고, 이는 온라인 강의로 대부분 대체되었다. 이 경우, 교수 강의 (43%) 혹은 대한해부학회에서 제작한 E-Anatomy (35%)를 통해 실습강의가 이루어졌다. 5점 Likert 척도를 이용하여 조사한 코로나 상황에서 실습시행에 대한 불안감은 2.20±1.11으로 낮게 나타났으며, 분반 여부나 학년에 따른 차이는 없었다. 실습에 대한 만족도는 3.93±1.06으로 의예과 학생보다 의학과 학생에서 높게 나타났다. 코로나19로 온라인 강의가 주로 이루어지고 있지만, 본 연구를 바탕으로 해부학 실습의 진행 방식에 대한 개선을 고려해 볼 필요가 있다고 하겠다. Due to the sudden spread of COVID-19 in 2020, it was difficult to conduct lectures at medical schools. Accordingly, many medical colleges conducted anatomy practice according to the current situation and quarantine regulations in the region or conducted lectures instead of practice. Therefore, in this study, students’ responses were investigated for anxiety for infection and lecture satisfaction according to various practice methods. A total of 314 medical school students participated in the questionnaire, and 222 students performed anatomy practice, with the division (56%) or shortened class time (54%). In the cases that the practice was not conducted, it was postponed (50%) or skipped (28%), which was replaced by online lectures. In this case, lectures were provided through faculty lectures (43%) or E-Anatomy (35%) produced by the Korean Association of Anatomists. With 5-point Likert scale, the anxiety for infection during practice was low as 2.20±1.11, and did not differ depending on the division or grade. Satisfaction with the practice was 3.93±1.06, which was higher in medical students than in premedical students. This study shows that online lectures, which were mainly conducted during the COVID-19 pandemic era, must be properly conducted in anatomy practice in order to have an anatomy learning effect.

스테아린산으로 表面改質된 중질산탄산칼슘의 粉體特性 평가

鄭洙福,채영배,玄鍾泳 한국자원공학회 2004 한국자원공학회지 Vol.41 No.6

Surface property, fluidity, flowability and floodability of ground calcium carbonate (GCC) and GCC coated with stearic acid were investigated. The surface of GCC is hydrophilic in general, but it was changed to hydrophobic when it was coated with stearic acid. The contact angle increased with increasing the coating ratio of stearic acid. The contact angle of GCC coated with stearic acid of 1.0wt% was 105 and the hydrophobicity of that was 100%. Surface energy of non-coated GCC determined by IGC was 103mJ/m2, but that of coated GCC was 34.8mJ/m2. Therefore, surface energy of coated GCC largely decreased by surface modification with stearic acid. When the powder properties were characterized using Kawakita's equations, that the fluidity index of the coated GCC was decreased from 0.59 to 0.46, and the adhesion index of that was increased from 18.60 to 30.39 when the surface of GCC was modified with stearic acid. On the other hand, characterization based on the method suggested by Carr showed that the flowability of GCC coated with stearic acid increased from 45 to 53. Floodability also increased from30 to 69 by coating with stearic acid. Therefore, flowability and floodability of the GCC coated with stearic acid were very improved comparing with the non-coated GCC. The results of this study could be used as fundamental data for design of storage system, feeding system, transfer system and packing system in a powder industry. 석회석을 물리적으로 파분쇄하여 제조되는 중질탄산칼슘과 이를 스테아린산으로 표면처리하였을 때의 입자표면 특성과 분체의 유동성 및 충전특성 등을 고찰하였다. 표면처리하지 않은 중질탄산칼슘 분체의 경우 물에 완전 젖음 상태를 나타내었다. 그러나 스테아린산에 의해 표면개질된 분체는 소수성을 띄게 되고, 스테아린산의 첨가량이 증가함에 따라 접촉각의 크기도 증대됨을 나타내었다. 스테아린산의 첨가량이 1.0wt.%일때 표면개질된 중질탄산칼슘의 접촉각은 105 였으며, 소수도는 100%를 나타내었다. 표면개질하지 않은 중질탄산칼슘 분체와 스테아린산으로 표면개질된 분체의 분산표면에너지를 역크로마트그래피에 의해 측정한 결과, 표면개질하지 않은 경우 103mJ/m2를 보였으나, 스테아린산으로 표면 처리한 경우 34.8mJ/m2으로 크게 감소함을 확인할 수 있었다. 표면개질하지 않은 중질탄산칼슘과 스테아린산으로 표면개질한 분체의 물성을 평가한 결과, Kawakita 식에 의한 평가에서는 표면개질에 의하여 유동성 지수는 0.59에서 0.46으로 감소하였으나, 부착력 지수는 18.60에서 30.39로 증가하였다. Carr가 제시한 방법에 의해 분체를 평가한 결과 스테아린산에 의한 표면개질에 의하여 흐름성 지수가 45에서 53으로 증가하여 흐름성이 향상되었으며, 분류성 지수도 30에서 69로 증가하여 분체의 분류성이 현저히 강해짐을 알 수 있었다. 이러한 분체의 특성 평가 결과는 분체공장의 설계시 저장, 급광, 이송, 포장 등의 설계에 중요한 기초자료로 활용될 수 있을 것으로 보여진다.

배드민턴 동호인의 대회참여 및 기량등급에 따른 여가정체성과 심리적 행복감의 차이분석

정수정(Jung, Su-Jung),고기태(Ko, Ki-Tae),최옥진(Choi, Ok-Jin) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.4

The study has conducted a survey on differences in leisure identity and psychological well-being according to participation in badminton games and individual prowess targeting 400 members of the National Sports Badminton Union. The collected questionnaires were analyzed according to the study purpose with SPSS/PC Window V19.0 program. Analyses on primary factor and reliability were conducted for the validity and reliability of the results. The results of the study with the methods and procedures above are as follows: Firstly, as for differences in leisure identity according to the member’s participation experience in badminton competitions, it showed that there are significance differences in identification, self-actualization and self-esteem. Secondly, as for differences in psychological well-being according to the member’s participation experience in badminton competitions, it showed that there are significance differences in self-realization, self-confidence, hedonic enjoyment and a sense of immersion. Thirdly, as for differences in leisure identity according to the member’s prowess, there were meaningful differences in identification and self-actualization. Fourthly, as for differences in psychological well-being according to the member’s prowess, self-realization, self-confidence and hedonic enjoyment showed meaningful differences.

대한제국시기 원구단의 원형복원과 변화에 관한 연구

정수인 서울시립대학교 서울학연구소 2006 서울학연구 Vol.- No.27

Wongudan(Temple of heaven in Korea) was a historically important structure at the end of the Daehan Empire, but it was damaged in 1913 by Japan and has not been properly evaluated since then. Yet, following the example of Temple of heaven in China, Wongudan is an edifice located near to the main palaces(Kyeong-un Palace) downtown in Seoul and built in an appropriate manner to the topography and urban features on the topology. This structure was started to be built in 1897 and the repair was conducted over seven years or so. Nevertheless, the limited site of the structure incurred frequent conflicts with its neighboring private houses, and when the main gate of Wongudan was moved to Sogong Street, the passages south of the structure were so narrow that its reconstruction was finally reduced. Till 1900, Hwangkungwoo including initial Wongudan had been completed, and Wongudan was restored for the second step in 1901 and properly remodeled in 1903. In 1913, however, Japan built Joseon Hotel on the site of Wongudan and converted some of its affiliate structures like the shrine into the hotel subsidiaries. Such a state was continued till 1967 after the emancipation of Korea. And when the hotel was newly built, all the structures were demolished except for Hwangkungwoo, stone drum podium, and three archi-gate of the Hwangkungwoo. Lack in the recognition and investigation of cultural assets led to the destruction of Wongudan's affiliate structures. Currently, it is difficult to restore and investigate the cultural assets since the imperial palaces are connected to the plot of Joseon Hotel, which is a private property. The extant photos, maps, and documents show the Wongudan space, Hwangkungwoo spaces, and part of the shrine space. It calls for further research into the remaining spaces of the edifice including its eastern wing.

소방안전설비시스템의 Flash Over 측정과 피난적정성 평가에 관한 연구

정수일,진복권 대한설비관리학회 2004 대한설비관리학회지 Vol.9 No.4

국내 한의학계의 항혈전 효과에 대한 실험 연구 고찰 -2001년 이후 한방부인과학회지에 발표된 논문을 중심으로-

정수정 ( Soo Jung Jung ),마영훈 ( Young Hun Ma ),최승범 ( Seung Bum Choi ),박경미 ( Kyung Mi Park ) 대한한방부인과학회 2014 大韓韓方婦人科學會誌 Vol.27 No.1

The purpose of this study is to compare with the result of experimentalstudy about antithrombotic effect by reviewing recent oriental medicine journalsthat have been published since 2001` in Korea. Methods: Articles on antithrombotic effect that have been published from2001` to 2013` in oriental medicine journals registered National Research Foundationof Korea were searched. After that, 12 articles using same ``thrombosis conditionmodel`` were selected and reviewed. Results: The results were as follows. 1. If there is no limit drug concentrations, platelet aggregation induced byadenosine diphosphate (ADP) in hyulbuchukeo-tanggamibang (HBCT) was the largestaggregation inhibitory effect and platelet aggregation induced by epinephrine inSaegeum-san (SGS), Jogan-tanggagambang (JGTG), hyulbuchukeo-tanggamibang (HBCT)had a large inhibitory effect on aggregation. 2. At the lowest concentration, Mokdan-san (MDS) of the inhibition of plateletaggregation induced by ADP and Hyunhosaik-san (HHS) of the inhibition of plateletaggregation induced by epinephrine were effective. 3. Pulmonary embolism induced by collagen and epinephrine in Neungasojeok-tang(NSJT) has the highest antithrombotic effect. 4. Pathological conditions of extravasated blood by dextran, Jogan-tanggagambang(JGTG) has the highest inhibitory effect on decrease in platelet numbers. Comparedto the rest of the experimental drug, Saegeum-san (SGS), Heanggyonghonghwa-tang(HGTHHT), Wusl-san (WSS), Mokdan-san (MDS) showed significant inhibitory effecton the prothrombin time (PT) increases. Honghwadanggui-san (HDS), Saegeum-san(SGS) showed significant inhibitory effect on increase in activated partial thromboplastintime (APTT) and Jogan-tanggagambang (JGTG), Heanggyonghonghwa-tang(HGTHHT) showed significant inhibitory effect on decrease in fibrinogen. Conclusions: This result will provide useful information for the prescriptionsof antithrombotic medicine in the field of Oriental medicine. We will have tocarry out further studies that will compare each herb used in the diseases causedby extravasated blood.

정수처리 공정별 유기물질의 변화

김화주(Kim Hya-Ju),손인식(Shon In-Sik),이영대(Lee Young-Dai),정수일(Chung Soo-Il) 대한토목학회 2005 대한토목학회 학술대회 Vol.2005 No.10