굴 패각 분말을 함유한 항균성 복합 필름의 제조 및 특성 연구

박기태,서종철,Park, Kitae,Kambiz, Sadeghi,Seo, Jongchul 한국포장학회 2021 한국포장학회지 Vol.27 No.1

In this study, ethylene vinyl acetate (EVA) and low density polyethylene (LDPE) composite films (EVA/LDPE-OSP) containing calcined oyster shell powder (OSP) were prepared using twin-screw extruder as an antimicrobial packaging material. The OSP composite was initially prepared and then incorporated into an EVA/LDPE blend at different ratios (0, 1, 3 and 5%) to develop the EVA/LDPE-OSP composite films. The as-prepared EVA/LDPE-OSP composites films were evaluated using FT-IR, DSC, TGA, OTR, WVTR, SEM and UTM as well as antimicrobial activity was examined using JIS Z 2801:2000 standard. OPS endowed the antimicrobial potency to the composite films against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. In addition, the incorporation of OSP remarkably enhanced the thermal stability. OSP as a natural biocidal agent can be used as a multifunctional additive in packaging industry such as improving the thermomechanical properties and preventing the microbial contamination of packaged products. 본 연구에서는 EVA/LDPE 복합소재에 OSP의 함량비를 달리한 EVA/LDPE-OSP 복합 필름을 이축압출기로 제조하였다. 제조한 복합 필름의 액티브 포장 소재로의 적용가능성을 평가하기 위해 FT-IR, DSC, TGA, OTR, WVTR, SEM, UTM 및 항균성을 분석한 결과 다음과 같은 결론을 도출하였다. EVA/LDPE-OSP 복합 필름 내 OSP 첨가는 열 안전성을 개선할 수 있었으며, OSP 함량이 높아질수록 항균성은 증가하였다. 그러나, OSP의 응집, EVA/LDPE 폴리머와 OSP 사이의 낮은 상호작용 등의 이유로 OSP의 첨가는 상대적으로 낮은 항균성과 기계적 물성, 차단특성의 저하를 확인할 수 있었다. 결론적으로 EVA/LDPE-OSP 복합 필름은 미생물에 의해 발생할 수 있는 식품의 부패를 방지하는 측면에서 긍정적인 효과를 가져올 수 있지만, 포장재로써 적용을 위해 무기입자인 OSP의 입자크기 조절, 표면처리, 상용화제 도입 등을 통한 분산성을 향상시키는 것이 필요하며 이를 통한 항균성 증진 및 필름의 물성 개선에 관한 추가 연구가 필요할 것으로 판단된다.

메이지 시대 ‘전기소설’ 개념의 변천

박기태(Park Kitae) 동아시아일본학회 2021 일본문화연구 Vol.- No.78

본 연구에서는 ‘전기소설’이라는 개념이 메이지 시대에 어떻게 변화했는지를 사전과 신문, 문학론, 문학사, 소설을 통해 살펴보았다. 19세기 후반, 주로 에도 시대 이래의 요미혼이나 희곡을 의미했던 ‘전기’는 1900년을 전후하여 영문학자들에 의해 서구의 ‘로망스’와 동일시되기 시작했다. 이는 동양의 ‘전기’와 서양의 ‘로망스’가 상상력을 자극하는 신기한 이야기라는 성격을 공통적으로 지니고 있었기 때문이었다. 그 결과 오시카와 슌로에 의해 1903년에 ‘상상력을 자극하는 신기한 소설’로서의 ‘전기소설’ 용법이 탄생했다. This paper is about the change of the concept of Denki Syōsetsu in the Meiji Period. Dictionaries, newspaper articles, and writings on the literary theory and history are used for this study. Originally, Japanese word Denki meant “play”. In the end of the 19th century, scholars of English literature started to use Denki to translate the word “Romance”, which was shared between many western languages. The scholars focused on the nuance of the word Denki, referring to strange stories that provoked reader’s imagination. As a result, the expression, Denki Syōsetsu, was first used in 1903 and was widespread to refer to “strange and imaginationprovoking novels” ever since.

저항하는 상상력으로서의 전기소설

박기태(Park, KiTae) 중앙대학교 일본연구소 2018 日本 硏究 Vol.0 No.49

This research involves an analysis of the aspects of resistance and imagination in the early works of Masaki Yamada, including God Hunting, Maitreya War and Glacier People. The key concepts for the analysis were “daily life” and “extraordinariness.” In God Hunting, Yamada’s religious imagination, the hero’s imagination about a better world and people’s imagination in the real world such as occult were used. In Maitreya War, religious imagination and pseudo-historical imagination were combined. In addition, the hero who symbolized the concept of extraordinariness defended the world by fighting the enemy, the other symbol of the same concept. Finally, in Glacier People, a bloodsucking subspecies of human being based on the imagination of the Gothic Romance genre was used as the symbol of extraordinariness. And the characteristics of the subspecies were reasonably explained through pseudo-scientific imagination. By analyzing these novels, it was found that various imaginations had joined or coexisted to support pseudo-historical fantasy novels of the 1970s, and had also affected later generation novels since the 1980s. Furthermore, the elements and methodologies appearing in Yamada’s early works were also found the later generation novels which were written since the 1980s. A strong combination of resistance and imagination was shared through generations of the pseudo-historical fantasy novels. As “the imaginations for resistance,” Yamada’s works contributed to “the renewal” of pseudo-historical fantasy novel genre, the literary flow that was created by Ryo Hanmura, Kazumasa Hirai and Futaro Yamada. In this sense, it can be said that Yamada’s early works played a role as a bridge between the 1970s and later eras.

상간 리액터를 제거한 12상 병렬 연결 듀얼 컨버터 시스템의 예측전류제어

박기태(Kitae Park),지준근(Jun-Keun Ji),설승기(Seung-Ki Sul),최창호(Chang-Ho Choi),신현석(Hyun-Seok Shin),이창원(Chang-Won Lee),장계용(Kye-Yong Chang) 대한전기학회 1996 대한전기학회 학술대회 논문집 Vol.1996 No.7

MBR-RO 공정에서 MBR 운전 Flux에서 따른 RO fouling rate에 대한 비교분석

박기태 ( Kitae Park ),김지훈 ( Jihoon Kim ),박정우 ( Jungwoo Park ),박준영 ( Junyoung Park ),김재훈 ( Jaehun Kim ),전민정 ( Minjung Jeon ),김형수 ( Hyungsoo Kim ) 한국물환경학회(구 한국수질보전학회) 2016 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2016 No.-

상악 매복 견치의 진단과 예방적 접근

박기태(Kitae Park) 대한치과의사협회 2014 대한치과의사협회지 Vol.52 No.5

Maxillary canine is the most common impacted tooth except third molars. In Asian populations, labial impaction is more common than palatal impaction, but palatal impaction is three times more common than labial impaction in Caucasion. The incidence of maxillary canine impaction is known as 1~3%, and 12% of these cases are involved in the root resorption of the adjacent lateral incisor. In children, early diagnosis is important to prevent the impaction of maxillary canine through clinical and radiographic examinations. In addition, preventive measures should be considered at the proper time. These measures include the removal of deciduous canines and the expansion of the maxillary arch.

다이쇼·전전 쇼와 시대의 일본 ‘전기소설’ 개념 변천

박기태 ( Park Kitae ) 한국외국어대학교 일본연구소 2021 日本硏究 Vol.- No.87

本稿では大正から戦前昭和に至る「伝奇小説」概念の変遷を当時の辞書ㆍ新聞ㆍ小説ㆍ文学論から迪り、その流れと詳細について論じた。明治期、英文学史で「ロマンス」が「伝奇」に訳されてから、押川春浪によって「伝奇小説」という言葉が誕生した。 大正時代には中国の古典としての「伝奇」と、「小説に仕組まれた空想的な事丰丙」としての「伝奇」、そしてそれを題材として用いた「伝奇小説」概念が共存していた。新聞においても「伝奇」と「伝奇小説」がそのような意味で使われていた。当時、「時代小説」という意味は「伝奇小説」に含まれておらず、世界中の不思議で興味深い小説と物語が「伝奇」または「伝奇小説」として呼ばれていた。この時期から「伝奇」と「伝奇小説」の混用か始まっており、「時代小説」を指す用例は1926年から現れている。なお、大正時代の「伝奇小説」は「好奇心と想像力を刺激して一般人にも広く読まれるような興味本位の商業小説」としての性格を持っており、1920年代に現れた「大衆文芸」の概念を先取 りしていた。 昭和時代になると、辞書で「伝奇小説の定義と系譜、文学的意義が提示されるようになる。中国の「伝奇」と西洋の「ロマンス」、そして日本の物語と読本から近代文学に至る系譜か硏究者の間で'認識されていたのである。作家からも「伝奇小説の大集曲を唱える声が上がり、「伝奇小説」のジャンル的成長と蓄積が窺われる。それは概念の混乱を呼び起こし、「伝奇」概念を整理しようとする試みも行われた。大正時代の「広い伝奇小説の概念」が存続していたものの、時代小説のブームにより、次第に荒唐無稽な時代小説を「伝奇」または「伝奇小説」と呼ぶ傾向が現れた。まさに戦前は、「非曰常的な内容で想像力を刺激する」という「伝奇小説」概念の共通部分と、「何を伝奇小説として、伝奇的なものとしてみなすか」という差集合が明確化した時期であったのである. This study is about the change of the concept of Denki Shōsetsu, a subgenre of Japanese literature, from the Taishō era to the Prewar Shōwa era. We used dictionaries, newspaper articles, novels, and literary theories from the periods for this study. In the Meiji era, the word Romance in English literature was translated as Denki by Japanese translators. Oshikawa Shunrō was the one who invented the term, Denki Shōsetsu. According to newspaper articles from the Taishō era, Japanese writers used several expressions with similar Chinese letters and pronunciations to refer to different literary concepts. Chuanqi meant Chinese classic literature; Denki meant imaginary concepts used in fiction; and Denki Shōsetsu meant the novels centering around Denki. In the Taishō era, Denki Shōsetsu was not used to refer to the concept of Jidai Shōsetsu. The original meaning of Denki or Denki Shōsetsu was fantastic and interesting stories and novels of every country. Gradually, the meaning of Denki and Denki Shōsetsu had become one and the same. The first example of using the two terms to refer to the concept of Jidai Shōsetsu was from 1926. Also, the term was a precursor of the concept Taishū Bungei, which was invented in the 1920s. In the Shōwa era, the concept, history, and significance of Denki Shōsetsu were defined in dictionaries. It meant Japanese scholars of the time had established the history and concept of modern Japanese literature, starting from Chuanqi of China and romance of western countries, to Monogatari and Yomihon of Japan, to Denki Shōsetsu. During the Shōwa era, Denki Shōsetsu secured its stronghold as a subgenre of Japanese literature. At that time, a broad concept of Denki Shōsetsu from the Taishō era was still around. On the other hand, however, a group of nonsensical novels was also started to be categorized as Denki or Denki Shōsetsu as Jidai Shōsetsu came into fashion. The Prewar Shōwa era was the time when both the common denominator of Denki Shōsetsu, which was provoking readers imagination with abnormal stories and different interpretations of the term to define the meanings of Denki Shōsetsu or Denki were solidified.

화성탐사항공기 프로펠러 익형의 다목적 형상최적화

박기태(Kitae Park),정신규(Shinkyu Jeong) 한국항공우주학회 2019 한국항공우주학회 학술발표회 논문집 Vol.2019 No.11

戦後における「伝奇小説」概念の変遷 -1945年から1970年代まで-

朴起兌(Park, KiTae) 중앙대학교 일본연구소 2022 日本 硏究 Vol.- No.56

This study illuminates a transition of the concept of “Denki Shōsetsu” from 1945 to the 1970s. After World War II, for some time since 1945, the concept of “Denki Shōsetsu” had been defined as a turbulent story with imagination. However, as a term, “Denki Shōsetsu” had been replaced by “Romance” until the mid-1960s; “Denki Shōsetsu” was perceived as a “decayed” concept. In the late 1960s, due to the Fantasy and Bizarreness boom, the original concept of “Denki Shōsetsu” became generalized, and some works of ”Denki Shōsetsu” of the pre-war era were republished. Around 1971, born in the field of science fiction, “Denki Romance” became gradually recognized as the mainstream of ‘Denki Shōsetsu’ instead of “Jidai Shōsetsu.” A transition of the concept of ”Denki Shōsetsu” resulted from an influence of public culture, an organization of genealogy and methods through complete works and newspapers, along with the influence of Science Fiction novels. However, it is worth noting that all the concepts during the transition have one same or key feature, namely, a “turbulent story.”

위치 기반 되먹임 제어가 장기내에서 캡슐 로봇의 이동 성능에 미치는 영향

박기태(Kitae Park),양성욱(Sungwook Yang),김진석(Jinseok Kim),김태송(Tae Song Kim),윤의성(Eui-Sung Yoon) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11

The control system that maintains uniform stroke of the mobile in the paddling based capsular microrobot is proposed to enhance the locomotive performance in gastrointestinal (GI) tracts. The optical encoder is designed and fabricated for the positional control of the mobile in the microrobot. Moreover, the stroke of the mobile that enhances the forwarding velocity of the micorobot is optimized. By comparing the objected displacement with the measured one under various driving voltage, the control performance is verified. The forwarding velocity of the microrobot is evaluated in accordance with the various driving voltages and strokes under two kinds of deformable conditions, latex tube and silicon tube. In the ex-vivo test, the forwarding velocity of the microrobot with the optimized stroke by the control system is increased. The control system works properly with high resolution and accuracy and the forwarding velocity of the microrobot is maximized under the optimized stroke.