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대목종류에 따른 참외 목질부 분비액내의 무기성분 및 cytokinins 함량
김성은,정기환,이정명 慶熙大學校 1998 論文集 Vol.27 No.-
Mineral element contents and cytokinin activity in the xylem exudate of 'Tongilhwang' oriental melon were compared with those melons grafted to various rootstocks. In addition, the effect of grafting on the growth and fruit quality of oriental melon was also investigated. 1. The fruit quality of intact melon was not different from that of the grafted ones even though the growth was reduced in the intact melons than the grafted oriental melons. 2. Electric conductivity of the xylem exudate in intact and grafted oriental melons ranged from 1.56∼3.14 mS/cm. The mineral contents were different depending on the kind of rootstock. The total mineral content in oriental melon grafted to melon rootstock was 3022 ppm which was higher than the intact plant. The lowest mineral content was recorded in the sap from 'Teuktozwa' grafted oriental melon, mostly due to low concentration of NO_3^- and PO_4^3-. 3. Xylem sap contained trans-zeatin riboside and dihydrozeatin riboside in intact 'Tongilhwang' and the xylem exudate front grafted oriental melons contained trans-zeatin riboside only.
김성은,손인진 대한금속·재료학회 2020 대한금속·재료학회지 Vol.58 No.11
ZrO2 is a promising candidate for knee and hip joint replacements due to its excellent combination of low density, corrosion resistance and biocompatibility. Nevertheless, a low fracture toughness of pure ZrO2 at room temperature limits its wider application in the industry. One of the most obvious ways to solve the problem is to add a reinforcing phase, to produce a nanocrystalline composite material. Nanomaterials have been widely studied in recent years because they can improve hardness and fracture toughness. To produce nanocrystalline materials, the pulsed current activated sintering method has the advantage of simultaneously applying mechanical pressure and pulsed current during sintering. As a result, nanocrystalline materials can be produced within a very short time. Ta and ZrO2 nanopowders were mechanically synthesized from Ta2O5 and 2.5Zr powders according to the reaction (Ta2O5 + 5/2Zr → 2Ta + 5/2ZrO2). The synthesized powders were then sintered using pulsed current activated heating under 80 MPa uniaxial pressure within two minutes. Hardness and fracture toughness were measured using a Vickers hardness tester. The average hardness and fracture toughness of the nanocrystalline 2Ta-5/2ZrO2 composite sintered at 1350 oC were 1008 kg/mm2 and 10 MPa·m1/2, respectively. Both the hardness and fracture toughness of the composite were higher than monolithic ZrO2. The microstructure and phase of the composite was also investigated by FE-SEM and XRD.
The Influence of Iron Deficiency on Helicobacter pylori Eradication
김성은,박무인,박선자,문원,김재현,정경원,서광일,임성경,정진규,김현진,여고은,전성찬,조덕송,한유진 대한상부위장관ㆍ헬리코박터학회 2016 Korean Journal of Helicobacter Upper Gastrointesti Vol.16 No.2
Background/Aims: Helicobacter pylori is a distinctive pathogen that lives in the gastric mucosa and is a well known risk factor of gastric adenocarcinoma. Iron deficiency aggravates the development of H. pylori-induced premalignant and malignant lesions in a cagA-dependent manner, enhancing H. pylori virulence. The aim of this study was to identify the relationship between iron deficiency and H. pylori eradication rates. Materials and Methods: Participants who received 7 days of first-line triple therapy with serum iron level measured in parallel were retrospectively investigated between 2005 and 2014. H. pylori eradication was confirmed by the rapid urease test or 13C-urea breath test at least 4 weeks after completion of triple therapy. Iron deficiency was defined as either a serum iron level less than 50 μg/dL or a serum ferritin level less than 12 ng/mL. Results: A total of 194 patients received 7 days of first-line triple therapy along with parallel serum iron level measurements over the 10-year period. The mean average age was 53.3 years (range, 21∼86 years), and 135 patients (69.6%) were male. The overall H. pylori eradication rate was 83.5%. Proportions of eradication success with ferritin level less than 12 ng/mL and iron less than 50 μg/dL were 90.5% and 88.6%, respectively. However, there was no statistical difference in eradication rates according to iron deficiency. Conclusions: Iron deficiency might not be related with H. pylori eradication rates in this study. Further large-scale studies are needed to confirm this result. (Korean J Helicobacter Up Gastrointest Res 2016;16:82-87)
김성은 일본어문학회 2018 일본어문학 Vol.80 No.-
In modern Korea, the place where the Christianity was propagated served as space where the American missionaries compete with, and coexist with, the colonial bureaucrats of the Empire of Japan. In this article, we focus on the tripartite relation between the colonial bureaucrats, the foreign missionaries, and Korean people with respect to the propagation of the Christianity in Korea, and analyze the two types of the policy to separate the politics from the religion, one put forward by the foreign missionaries and the other put forward by the Empire of Japan. Furthermore, we take a particular look at the Japan Union Church, which strived to propagate the Christianity in Korea during the colonial era, and point out the way in which the policy to separate the politics from the religion became a contradiction and then became govermentized. Through these analyses, we clarify how the Empire of Japan utilized the concept of the policy to separate the politics from the religion in order to disseminate the Christianity, and reveal how this concept was perceived by the local people in the colonized Korea.
開化期の阪神におけるキリスト教新聞とミッションスクール - 『七一雑報』の投書欄を中心に
김성은 한국비교문학회 2009 比較文學 Vol.0 No.49
Shichiichi Zappo is the first Christian newspaper in the Japanese Christian circle. According to its editorial in the first issue, its target readers were women and semi‐intelligent class people and the missionaries’ basic edition policy was modernization from the bottom. This study analyzed empirically how much the missionaries’ intention as such was reflected in the actual readers of Shichiichi Zappo, focusing on the readers’ columns. According to the results of this study, the contributors of Shichiichi Zappo were mostly those born or living in large cities, and many of contributors who made frequent contributions were mission school students. In addition, we found that students at the Doshisha participated in the edition of Shichiichi Zappo. In this way, the civilization and enlightenment of Hanshin (Osaka, Kobe, Kyoto) was promoted in close connection with Christian journalism and mission schools. In addition, the pattern of civilization and enlightenment that started in Hanshin provided the base for interconnecting mission schools in Tokyo, Aomori, and Shizuoka and developing democratic and Christian journalists through the readers’ columns of Shichiichi Zappo. On the other hand, however, due to the close connection between Christian newspapers and mission schools, Shichiichi Zappo could not achieve modernization from the bottom as intended by the missionaries, and instead, it had Japanese intellects as its major readers. Shichiichi Zappo is the first Christian newspaper in the Japanese Christian circle. According to its editorial in the first issue, its target readers were women and semi‐intelligent class people and the missionaries’ basic edition policy was modernization from the bottom. This study analyzed empirically how much the missionaries’ intention as such was reflected in the actual readers of Shichiichi Zappo, focusing on the readers’ columns. According to the results of this study, the contributors of Shichiichi Zappo were mostly those born or living in large cities, and many of contributors who made frequent contributions were mission school students. In addition, we found that students at the Doshisha participated in the edition of Shichiichi Zappo. In this way, the civilization and enlightenment of Hanshin (Osaka, Kobe, Kyoto) was promoted in close connection with Christian journalism and mission schools. In addition, the pattern of civilization and enlightenment that started in Hanshin provided the base for interconnecting mission schools in Tokyo, Aomori, and Shizuoka and developing democratic and Christian journalists through the readers’ columns of Shichiichi Zappo. On the other hand, however, due to the close connection between Christian newspapers and mission schools, Shichiichi Zappo could not achieve modernization from the bottom as intended by the missionaries, and instead, it had Japanese intellects as its major readers.
Caution warnings are required for the sale of neodymium magnets in Korea
김성은,강번,최병호,박진영,김건,최재영 대한응급의학회 2019 大韓應急醫學會誌 Vol.30 No.6
Recent reports indicate that the number of children presenting to the emergency department after ingesting magnets has increased over the last decade. Since neodymium magnets became commercially available, reports of complications caused by their ingestion have accrued in Korea. Neodymium magnets are tens of times stronger than ordinary magnets; hence, complications associated with their ingestion are severe. These “super magnets” can be purchased without any restriction. We report the case of a healthy 4-year-old girl who ingested multiple neodymium magnets. The magnets were attached to each other, with the lower esophageal sphincter trapped between them. Endoscopic removal failed, and surgical intervention was required. Unlike ordinary magnets, endoscopic removal of neodymium magnets is difficult due to their strong attraction to each other. In order to prevent potentially tragic accidents and their subsequent surgery, a cautionary warning is essential on toys containing neodymium magnets, to inform the public of the increasingly evident dangers of these “super magnets.”
김성은,이정현,김덕만,박진균,기선완,김지웅,Kim, Sung-Eun,Lee, Jung-Hyun,Kim, Deok-Man,Park, Jin-Kyun,Ki, Seon-Wan,Kim, Ji-Woong 한국정신신체의학회 2006 정신신체의학 Vol.14 No.1
연구목적 : 본 연구는 월경전 불쾌기분장애와 기질 특성과의 관련성을 알아봄으로써 월경전 불쾌기분장애의 병태생리 및 관련된 성격 경향을 이해하며 치료 응용의 가능성을 제시해 보고자 하였다. 방법 : DSM-IV 진단기준에 의해 월경전 불쾌기분장애로 진단된 28명을 대상으로 한국어판 TPQ, 축약형 월경전기평가서 등을 작성케 한 후, 이들 사이의 상관관계를 구하였다. 결과 : 기질의 4가지 차원에 해당하는 점수를 독립 변인으로 하고, 축약형 월경전기평가서 점수를 종속 변인으로 하여 표준 중다회귀분석을 시행하였을 때 월경전 불쾌기분장애 증상은 Cloninger가 제시한 성격의 기질을 구성하는 4가지 요인 중 손해 회피(HA) 요인과 보상 의존(RD) 요인에 대하여 유의하였으며, 특히 손해 회피(HA) 요인에 의해 가장 많이 설명될 수 있는 것으로 나타났다. 결론: 월경전 불쾌기분장애의 증상은 높은 손해 회피(HA) 요인과 낮은 보상 의존(RD) 요인에 의해 잘 설명되었다. 월경전기증상 중 특히 정동 증상이 손해 회피(HA) 요인과 상관관계를 갖고 있는데, 이는 월경전 불쾌기분장애가 기질의 특성에 영향을 받음을 의미한다. 이는 향후 월경전 불쾌기분장애의 병태생리의 이해에 도움이 될 것으로 생각한다. Objectives: The study was intended to explore the relationships between temperament and premenstrual dysphoric disorder, to understand symptomatology of premenstrual dysphoric disorder and associated personality trait and to suggest therapeutic availability. Method : Twenty eight women, diagnosed as premenstrual dysphoric disorder by DSM-IV, were asked to complete the Korean version of Tridimensional Personality Questionnaire, and Shortened Premenstrual Assessment Form. The correlations between the severity of premenstrual symptoms and the scores of Tridimensional Personality Questionnaire were calculated. Results : The severity of symptoms of premenstrual dysphoric disorder was best explained by the harm-avoidance factor of the four dimensions of temperament. Conclusion : The symptoms of premenstrual dysphoric disorder are well explained by the harmavoidance factor and the reward-dependence factor of four dimensions of the temperament.
김성은 중앙대학교 외국학연구소 2013 외국학연구 Vol.- No.26
Cities clearly reflect the modernity of colonial rule. What characterized the urbanization process of colonized Chosun? This study set out to investigate the process of pre-modern cities evolving into modern ones with the historical data before the Japanese annexation of Korea to understand the process of modern cities being built in colonized Chosun. For that purpose, the study found useful historical data in the records of missionaries who explored Chosun from the late 19th century to the early 20th century for Christian missions, tapped the modernity of the places they visited, and set up mission stations. The study thus actively cited the records of missionaries as primary data, trying to find connections between the formation of modern cities and Christian missions in the Honam region from the late 19th century to the early 20th century as they were not illuminated before. The findings led to three conclusions:First, Christian missionaries followed the southwestern coasts in the early days of their mission and tried to develop major harbor cities into modern cities. They did not move along the post roads, part of the major road network during Chosun, penetrating the center of Honam from Gunsan. Second, they built mission stations at strategic points of transportation with the potential of growing into modern cities, which indicates that the missionaries first considered population and transportation as the location conditions. Finally, the Christian missionaries expanded their influences through medical missions. They monopolized Western medical practice in Jeolla Province before the Japanese annexation of Korea in 1910 and paid attention to the areas where medical service could be expanded as candidates for modern cities.