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남조류의 체외 대사부산물이 다른 조류의 광합성에 미치는 타감작용
김범철,허우명,황길순,안태석,심재형 江原大學校 附設 環境硏究所 1994 環境硏究 Vol.11 No.-
The effect of cyanobacterial extracellular byproducts upon the aIgal photosynthesis was assessed to elucidate the allelopathic effect of algal blooms in eutrophic lake. Algal cultures were filtered with 0.2μm membrane filters to remove algal cells and sterilized. 0 to 30m1aliquots of filtrate were added to 25m1 culture suspensions of other algal species, and the (14)^C uptake rates wert measured. The filtrates of cyanobacterial cultures(Anabaena flos-aquae, Phormidium sp.) inhibited the photosynthesis of green algae(Selenastrum capricornutum and Scenedesmus brasiliensis), while the filtrate of Selenastrum capricornutum and Scenedesmuns brasiliensis did not inhibit Anabaena flos-aqiae. In the autoinhibition test Anabaena flos-aquae, Selenastrum capricornutum, and Scenedesmus brasiliensis showed positive, negative, and no effects, respectively.
허태길 ( Tae Gil Heo ),홍성우 ( Seong Woo Hong ),장여구 ( Yeo Goo Chang ),이우용 ( Woo Yong Lee ),오행진 ( Haeng Jin Ohe ),최경운 ( Kyeong Woon Choi ),강윤경 ( Yun Kyung Kang ) 대한소화기학회 2021 대한소화기학회지 Vol.78 No.4
Tuberculosis of the cystic duct lymph node is very rare. Only four cases have been reported in the literature. This paper presents the case of a young male patient with a tuberculous cystic duct lymph node and chronic cholecystitis, who was diagnosed with cystic duct stones and a gall bladder polyp preoperatively. (Korean J Gastroenterol 2021;78:245-248)
허태길 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.3
Actinomycosis is a chronic suppurative and granulomatous bacterial infectious disease caused by Actinomyces israeli and characterized by sulfur granule formation in pus or surgically resected specimen. Actinomyces israeli are normal inhabitants in the oral cavity and upper intestinal tract of humans. The three mar clinical presentations include the cervicofacial, thoracic, and abdominal legions. Most of abdominal actinomycosis is developed after abdominal operation, trauma or inflammatory bowel disease, We report a case of mass formed abdominal actinomycosis in 50-year old woman who had received appendectomy 15 years ago. The patient underwent surgery under the impression of soft tissue mass involving greater omentum and adjacent mesentery, which was diagnosed actinomycosis by a histological study of operative specimens.
허태희 ( Heo Tae Hui ),길병옥 ( Gil Byeong Og ),라미경 ( La Mi Gyeong ),이상호 ( Lee Sang Ho ) 북한연구학회 2003 북한연구학회보 Vol.7 No.2
Almost a year has passed since a new crisis developed as North Korea admitted to a new nuclear weapons development program. Although the tension between North Korea and the US has subsided as they have accepted the six-party talks, the fundamental problem of the North Korea nuclear weapons has not been resolved. Despite the strong evidence that all the parties are realigning their policies towards the future talks as they have agreed to hold the second round of talks, it is necessary to examine the impact of the changes in Washington`s strategic posture and military strategy towards the Korean peninsula. In particular, its policy implications for the future South Korean-US alliance is crucial in order to formulate South Korea`s responses towards the crisis. Therefore, this study has analyzed the influence of the new US security policy towards the Korean peninsula along with its implications among the major powers in the face of the current challenges. However, it is the finding of this study that Washington`s current intention is ambiguous since there is no clear indication whether Washington prefers a complete resolution or partial settlement of the crisis. Also the US is not likely to succumb to North Korea`s strategy of brinkmanship and blackmail, and might decide to reinforce its own views and time-table regarding the issue if they chose to do so. Furthermore, it seems clear that regardless of whatever, resolution the future talks yield, South Korea and Japan are likely to bear burdens of paying for North Korea`s change, although in varying degrees depending on the agreement. In any event, it is important for South Korea to maintain the principle of peaceful settlement through diplomatic negotiation, and encourage North Korea-US talks, possibly with supports from various international organizations and exchanges of special envoys. If this is one significant step towards the peaceful settlement, it is plausible that an additional reinforcing measure, what we call dual-guarantee mechanism, could be created, if South Korea and the US could find ways through which they could fortify trust in the time of changes. South Korea should take an initiative to lay down a groundwork upon which the principle, direction and boundary of the future South Korean-US and the South-North relationships are to be based in order to establish peace and prosperity in the East-asian region. And South Korea should formulate preventive measures and crisis management mechanism to react to the North Korea nuclear crisis to guard against unforeseen future contingency.
휴대폰 외장부품 제조기술 공유를 위한 웹기반 플랫폼 개발
정태성(Tae Sung Jung),윤길상(Gil Sang Yoon),허영무(Young Moo Heo),이효수(Hyo Soo Lee),강문진(Moon Jin Kang) 대한기계학회 2013 大韓機械學會論文集A Vol.37 No.1
뿌리기술로 불리는 생산기반기술은 국내 주력기간산업과 미래유망산업 관련 제품의 품질 및 생산성을 좌우하는 핵심기술로서 제조산업의 주류를 이루는 중소기업의 경쟁력 강화를 위한 최적의 생산기반기술 관련 지식의 공유 및 확산은 매우 중요하다. 그러나, 생산기반기술은 현장 경험과 숙련정도에 의존도가 높은 공정기술이기 때문에 이를 지식의 형태로 표준화하여 시스템적으로 공유하기 어렵다. 본 연구에서는 대표적인 모바일 핵심부품 중 하나인 휴대폰 외장부품 제조를 위해 공통적으로 필요한 부품 설계, 금형설계, 금형가공, 사출성형공정 최적화, 표면처리 등의 주요 기반기술의 표준화 및 정보화를 수행하였다. 또한, 이를 쉽게 축적, 공유하도록 하기 위하여 지식저작도구,의미기반 데이터베이스, 웹 포털 서비스로 구성된 웹 기반 지식공유 시스템을 구축하였다. Despite rapid changes in the structure of industry, manufacturing remains a key industry for economic progress, promotion of trade, increased employment, and the creation of new industries. Production technologies are essential for strengthening the competitiveness of small- and medium-sized manufacturing industries. However, it is very difficult to standardize and systematically propagate production technology from an experienced worker to an inexperienced worker because these technologies are generally improved by the skilled people in a workshop. In this study, we introduce a Web-based platform system consisting of a knowledge authoring tool, technology database, semantic database, and Web portal service for sharing production technologies for the exterior housing parts of mobile products. By investigating various cellular phone designs, reference form factors for three types of mobile phone housings were designed based on the standard features. In addition, several manufacturing technologies and considerable information such as reference mold designs and molding conditions optimized using CAE and recent R&D outputs are stored in this system.