Synthesis and Photovoltaic properties of Ullazine chromophores as an Electron donor for Organic Photosensitizers in DSSCs

이영서,김재홍,전지훈,( Suresh Thogiti ) 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0

dye-sensitized solar cells have been attracted great attention due to its low cost and ease of fabrication. Recently, metal-free organic dyes as alternative sensitizers have attracted considerable attention because of their potential advantages, such as control of the structure of organic compounds, the use of inexpensive and environmentally benign resources, high molar extinction coefficient, and facile synthesis. More and more efforts have been dedicated to development of metal-free organic dyes which exhibit not only higher molar extinction coefficients, but also simple preparation and purification procedures at lower cost. In this investigation, we have developed novel organic dyes in which two different donor with different electron donation ability attached on ullazine core applied on DSSCs. The optical, electrochemical, and photovoltaic performance of DSSC composed of these organic chromophores were measured and evaluated by comparison with that of standard ruthenium dye N719.

로데 파라미터와 손상을 고려한 소성모델의 수치구현

이영서,이형일 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.6

여성 객체화 전략의 실패와 침묵의 정치성 -김승옥의 「서울의 달빛 0장」 재독-

이영서 고려대학교 한국언어문화학술확산연구소 2023 Journal of Korean Culture Vol.62 No.-

This article focused on the problematic nature of Kim Seungok’s short story Chapter 0 under the moonlight of Seoul(Chapter 0) and intends to newly place it in the genealogy of literary history. It also aims to confirm Kim Seungok’s politicality as a novelist revealed in this work. The politicality of a novelist is revealed by the way that the desire and response to the question of “what kind of novelist I want to be” are ‘repeated’ and ‘varied’ through both content and form. “Objectification” suggested by Martha Nussbaum, is a repeated strategy of creativity in Kim Seungok’s work, so it is a perspective that meets the purpose of this article’s. The method of objectification revealed in the representative work Mujin Travel in the 1960s is also repeated in Chapter 0 in the 1970s. In Kim Seungok’s novel, women are supposed to be the lowest and last ‘object’, and are used as the basis for supporting the male subject’s “self-world.” However, in Chapter 0, variations occur when the existing female objectification strategy fails. As the supposed woman who is an essential component of the “self-world,” leaves, the male subject's “self-world” collapses, forcing the subject to try to establish a new relationship with the object. However, both “Disgust” that protect the subject by pushing the object to the outside and the narrative device of “Conflict” that establishes the subject’s identity in conflict with the object’s values are fundamentally impossible due to the composition principle of the “self-world.” ‘Silence’ is the only political language allowed for a subject who has lost all means. In this regard, Chapter 0 is a novelization of ‘Silence’ itself. According to this analysis of works, this paper proves that the silence of Kim Seungok, who rarely created novels in the 1970s, was intended. Accordingly, Kim Seungok’s politicality as a novelist is defined as ‘Politicality of Silence.’ And ultimately, it is proposed to place Chapter 0 at the end of the genealogy as a work that re-connects Kim Seungok’s literary genealogy. 본고의 목적은 김승옥의 단편소설 「서울의 달빛 0장」의 문제작으로서의 성격에 주목하여 문학사적 계보에 재배치하고, 이를 통해 드러나는 김승옥의 소설가적 주체로서의 정치성을 확인하는 것이다. 소설가의 정치성이란 ‘어떤 소설가이고 싶은가’라는 정체화의 문제에 대한 욕망과 응답이 작품을 통해 반복되고 변주되는 방식에 따라 드러나며, 김승옥이 소설가로서 시대적 위기에 직면한 상황에서 쓴 「서울의 달빛 0장」은 이를 잘 보여주는 작품이다. 여성의 객체화 전략을 통해 남성 주체의 ‘자기 세계’를 구성하는 것은 김승옥의 작품 세계 전반에 걸친 창작 매커니즘이기에, 본고에서는 마사 누스바움의 개념을 통해 이를 설명했다. 1960년대의 대표작 「무진기행」에서 드러나는 객체화의 전략은 1970년대의 「서울의 달빛 0장」에서도 반복된다. 김승옥 소설에서 여성은 최저이면서도 최후의 객체로 전제되며, 남성 주체의 ‘자기 세계’를 지탱하는 기반으로 사용된다. 그러나 「서울의 달빛 0장」에서는 기존의 여성 객체화 전략이 실패함으로써 변주가 일어난다. 필수구성성분인 전제된 여성이 이탈함으로써 남성 주체의 ‘자기 세계’가 붕괴됨에 따라, 주체는 객체와의 새로운 관계정립을 시도할 수밖에 없게 된다. 그러나 객체를 외부로 밀어냄으로써 주체를 보호하는 혐오 감정이나, 객체의 가치관과 충돌하여 주체적 정체성을 정립하는 갈등의 장치는 모두 ‘자기 세계’의 구성원리로 인해 봉쇄된다. 모든 수단을 잃은 주체에게 허락된 정치적인 언어는 침묵뿐이며, 이렇듯 주체가 필연적으로 침묵할 수밖에 없는 과정을 서사화했다는 점에서 「서울의 달빛 0장」은 침묵 자체를 소설화한 작품이다. 이러한 작품 분석에 따라 본고는 1970년대에 들어 소설 창작을 거의 하지 않았던 김승옥의 침묵이 의도된 것임을 증명하고, 소설가적 주체로서 김승옥의 정치성을 ‘침묵의 정치성’이라고 규정한다. 그리고 김승옥의 단절됐던 김승옥의 문학을 다시 잇는 작품이자 최후의 정체화로서, 「서울의 달빛 0장」을 계보의 마지막에 위치시킬 것을 제안한다.

Deep Learning-Assisted Droplet Digital PCR for Quantitative Detection of Human Coronavirus

이영서,최지욱,강태욱,정봉근 한국바이오칩학회 2023 BioChip Journal Vol.17 No.1

Since coronavirus disease 2019 (COVID-19) pandemic rapidly spread worldwide, there is an urgent demand for accurate and suitable nucleic acid detection technology. Although the conventional threshold-based algorithms have been used for processing images of droplet digital polymerase chain reaction (ddPCR), there are still challenges from noise and irregular size of droplets. Here, we present a combined method of the mask region convolutional neural network (Mask R-CNN)-based image detection algorithm and Gaussian mixture model (GMM)-based thresholding algorithm. This novel approach significantly reduces false detection rate and achieves highly accurate prediction model in a ddPCR image processing. We demonstrated that how deep learning improved the overall performance in a ddPCR image processing. Therefore, our study could be a promising method in nucleic acid detection technology.

COVID-19 이후 후유장애로 발생한 마른기침에 대한 맥문동탕 치험 3례

이영서,하다정,김경민 대한한방내과학회 2022 大韓韓方內科學會誌 Vol.43 No.6

Objective: The purpose of this study was to report three cases of post-COVID-19 dry cough that persisted even after taking Western medicine but was successfully treated with Maekmundong-tang. Methods: Three patients who were treated with Maekmundong-tang from March to June 2022 were selected from patients who visited Dong-Eui University Korean Medicine Hospital with post-Covid-19 dry cough. Jeil Maekmundong-tang Ext. granules were used to improve the cough. The effect of the treatment was evaluated using a visual analog scale, cough symptom score, and cough assessment test. Results: After the treatment, Cases 1, 2, and 3 showed decreases from 90 to 30, 65 to 0, and 70 to 20, respectively, for the visual analog scale score, decreases from 9 to 3, 5 to 0, and 5 to 3, respectively, for the cough symptom score, and decreases from 20 to 4, 9 to 1, and 8 to 3, respectively, for the cough assessment test score. Conclusion: Maekmundong-tang provided an effective improvement in the post-COVID-19 dry cough that persisted even after taking Western medicine.

이상지질혈증에 대한 택사탕(澤瀉湯)의 효과 : 체계적 문헌 고찰 및 메타 분석

이영서,허태영,김경민,Yeong-seo Lee,Tae-young Huh,Kyoung-min Kim 대한한방내과학회 2023 大韓韓方內科學會誌 Vol.44 No.3

Objective: The purpose of this study is to assess the effectiveness and safety of using Taeksa-tang for dyslipidemia through a systematic review and meta-analysis of randomized controlled trials (RCTs). Methods: The search was conducted using keywords such as "dyslipidemia", "hyperlipidemia", "taeksa tang", "zexie tang", and "takusha to" in 12 databases (Pubmed, Cochrane, Embase, ScienceDirect, CNKI, Wanfang, CiNii, RISS, KISS, ScienceON, OASIS, and DBpia) on April 13, 2023. There were no limits on the publication period and language. Cochrane's risk of bias (RoB) was used to evaluate the quality of the studies. A meta-analysis was conducted according to the outcome measurements such as total effective rate (TER), total cholesterol (TC), triglyceride (TG), HDL-cholesterol (HDL-C), LDL-cholesterol (LDL-C), and adverse effects, using the Review Manager web. Results: A total of 9 RCTs were selected. In evaluating the RoB, 2 studies mentioning the random sequence generation, 1 study conducting double blindness, and 8 studies without missing values were evaluated as low risk, while 1 study without mentioning the random sequence generation was evaluated as high risk. All other parts were evaluated as unclear risk. The treatment group (Taeksa-tang or Taeksa-tang-gagam) showed more statistically significant effects compared to the control group (Western medicine or Chinese patent medicine) in TER (RR : 1.24, 95% CI 1.15 to 1.34, P<0.00001), TC (MD : -1.12, 95% CI -1.68 to -0.56, P<0.0001), TG (MD : -1.08, 95% CI -1.65 to -0.51, P=0.0002), HDL-C (MD : 0.63, 95% CI 0.34 to 0.93, P<0.0001), LDL-C (MD : -0.81, 95% CI -1.10 to -0.53, P<0.00001). In addition, the treatment group showed lower adverse effects compared to the control group (RR : 0.30, 95% CI 0.12 to 0.74, P=0.008). Conclusion: This study suggests that Taeksa-tang is effective and safe to use for treating dyslipidemia. However, due to the low quality of the included studies, more clinical studies need to be conducted in the future to increase the possibility of clinical use.

수술 후 발생한 유방암 연관 림프 부종(BCRL)에 대한 황기계지오물탕(黃芪桂枝五物湯)의 효과 : 체계적 문헌 고찰 및 메타 분석

이영서,김예슬,김영균,김경민 대한한방내과학회 2024 大韓韓方內科學會誌 Vol.45 No.1

Objectives: This study assessed the effectiveness of Hwanggigyejiomul-tang for postoperative breast cancer-related lymphedema (BCRL) by a systematic review and meta-analysis of randomized controlled trials (RCTs). Methods: A search was conducted using keywords such as “breast cancer”, “lymphedema”, “edema”, “Huangqi Guizhi Wuwu decoction”, “Huangqi Guizhi Wuwu tang”, and “Hwanggigyejiomul tang” in 10 databases (PubMed, Cochrane, ScienceDirect, CNKI, CiNii, RISS, KISS, ScienceON, OASIS, DBpia) on February 11, 2024. There were no limits on the publication period and language, and the quality of the studies was evaluated using Cochrane’s risk of bias tool. A meta-analysis was performed based on the outcome measurements, such as total effective rate (TER), increase in shoulder joint mobility (flexion, extension, abduction, adduction), Fugl-Meyer assessment (FMA), and visual analog scale (VAS) using Review Manager Web. Results: Eleven RCTs were selected. The treatment group (Hwanggigyejiomul-tang-gagambang or hapbang with control group intervention) showed a more statistically significant effect compared with the control group (physical therapy or western medicine) in TER (upper limb circumference change), TER (upper limb edema grade change), increase in flexion angle, increase in extension angle, increase in adduction angle, FMA, and VAS. Conclusions: Hwanggigyejiomul-tang is effective in treating postoperative BCRL. However, because of the low quality of the included studies, more clinical studies are required to increase the possibility of clinical use.

김윤식의 문학사가(文學史家)로서의 정체화 —기획된 실패, 가르치는 문학사가

이영서 한국현대문학회 2023 한국현대문학연구 Vol.- No.71

본고의 목적은 김윤식이 문학사가로서 스스로를 어떻게 정체화하고자 했는지를 규명하는 것이다. 여기에서 정체화란 고정된 정체성이 아니라, 주체가 시대의 작용에 따라 계속해서 변화시키는, ‘어떤 주체이고 싶은가’에 대한 주체의 자기정치적 욕망을 가리킨다. 시대에 대한 위기의식과 응전의식으로 무장한 1970년대의 젊은 김윤식은, 일반 연구자와는 확연히 다른 정체화 욕망을 가진 문학사가—주체였다. 『한국문학사』는 평생에 걸쳐 문학사를 서술한 김윤식에게 있어 문학사라는 과제에 대한 최초의 응전이었으며, 따라서 김윤식의 문학사가로서의 정체화 과정 전체를 관통하는 욕망의 원형을 보여주는 저작이다. 또한 동시에 『한국문학사』는 김윤식의 문학사 기획 전체를 통틀어 유일하게 실패가 확정된 저작이기도 하다. 어떤 외부의 비판이나 증명에 의해서가 아니라, ‘형태’를 위한 기획과 ‘실체’를 위한 기술이 충돌하고 있다는 점에서 『한국문학사』는 이미 내재적으로 실패해 있었다. 중요한 것은 김윤식이 실패를 인지했음에도 그것을 무마하거나 부정하는 것이 아니라 더욱 철저한 것으로 ‘기획’했다는 점이며, 바로 이 지점에서 김윤식의 정체화 욕망이 드러난다. 문학 자체가 역사를 비롯한 모든 학문 영역과 관계 맺을 수밖에 없기에, 문학 공부의 궁극적 목표인 문학사란 필연적으로 철저한 ‘회의’를 거치지 않고는 도달할 수 없는 영역이다. 그리고 이러한 회의는 김윤식에게 있어 문학공부를 포기하게 만드는 기제이기도 하지만, 동시에 문학을 공부할 수 있는 동력이기도 하다. 문학사라는 도저히 해소될 수 없는 과제를 마주한 채로, 김윤식은 오히려 이에 대한 회의를 가르치는 ‘교사’를 자처함으로써 문학(사)의 결정불가능성을 돌파한다. 『한국문학사』에서 철저한 실패를 통해 회의의 흔적을 남기거나, 앞으로 올 문학사가들을 대표하는 청자를 설정하여 자신의 회의를 고백하는 방식은, 김윤식이 스스로를 ‘가르치는 문학사가’로 정체화하는 원리를 잘 보여준다. The purpose of this paper is to investigate the process of ‘identification’ of Kim Yoon-shik as ‘a literary historian’. Here, the term “identification” does not mean a fixed identity. Rather, it refers to what the subject continuously changes depending on the time period, that is, the subject’s political desire(or ethics) for ‘what kind of literary historian the subject wants to be’. In the 1970s, Young Kim Yoon-shik was a literary historian-subject with a distinctly different identification process from that of the average researcher. The History of Korean Literature was the first response to the task of literary history for Kim Yoon-shik, who wrote about literary history throughout his life. This is a work that shows the original form of desire that runs through the entire process of Kim Yoon-shik’s identification as a literary historian. At the same time, The History of Korean Literature is the only one work throughout Kim Yoon-shik’s entire career that has been confirmed to be a failure. This was according to any external critique or proof, but rather The History of Korean Literature had already inherently failed in that its ‘design’ for ‘form’ and its ‘description’ for ‘substance’ are conflicting. What is important is that Kim Yoon-shik did not try to minimize the failure, but he ‘designed’ it to be exact. This is where Kim Yoon-shik’s desire for identification is revealed. Literature itself is bound to be related to all academic fields including history, and literary history, the ultimate goal of studying literature, cannot be achieved without ‘doubt’. This doubt is a mechanism that at the same time pushes to give up studying literature and becomes a motivation to study it. Faced with a task of literary history that cannot be resolved, Kim Yoon-shik overcame the uncertainty of literary history by claiming to be a ‘teacher’ who teaches doubt. In The History of Korean Literature he does so by leaving traces of doubt through its ‘exact failure’, or setting up a listener to represent young literary historians to which he confesses his doubt. This shows the principle of Kim Yoon-shik’s identification as ‘the teaching literary historian’.

파워-제트

이영서 한국환경기술인연합회 1999 환경기술인 Vol.151 No.-

비파괴 분석법에 의한 천연석채(천연 안료)의 효율적 분석

이영서,송주현,남금문,팽기정,김남이 한국법과학회 2021 한국법과학회지 Vol.22 No.2