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PAV용 Skid Landing Gear의 설계 민감도에 대한 구조 해석적 연구
이창혁(Chang-Hyeok Lee),문창일(Chang-Il Moon),허장욱(Jang-Wook Hur) 한국기계가공학회 2023 한국기계가공학회지 Vol.22 No.12
In this study, the design sensitivity of the landing gear, a component of the PAV and UAM airframes that are emerging as a new means of transportation in the field of aviation, was structurally analyzed. In the case of eVTOL type PAV and UAM airframes, mass production marketability must be ensured by reducing airframe development and maintenance costs; the skid type landing gear structure can meet this requirement. In this study, a large deformation finite element analysis was performed on a skid landing gear consisting of only an aluminum tube structure without a damper for shock absorption structural integrity was examined stress and displacement owing to design changes of members were analyzed, A trend analysis of design sensitivity was performed.
전투경찰에서 발생한 폐렴에 있어서 Macrolide와 2세대 Cephalosporin의 치료 효과에 대한 전향적 비교 연구
이재일 ( Jae Il Lee ),양병윤 ( Byeong Yoon Yang ),문창기 ( Chang Gi Moon ),정재혁 ( Jae Hyeok Jeong ),김종수 ( Jong Su Kim ),이정민 ( Jung Min Lee ),안석진 ( Seok Jin Ahn ),정준오 ( Jun Oh Jung ),박상준 ( Sang Joon Park ),김윤권 ( 대한결핵 및 호흡기학회 2005 Tuberculosis and Respiratory Diseases Vol.58 No.3
목적 : 집단생활을 하는 젊은 성인에서 발생한 폐렴에 관한 연구는 매우 드물며, 국내 연구는 전무한 실정이다. 이에 저자들은 전경 대원에서 발생한 폐렴의 양상에 대해 알아보고 Macrolide와 2세대 Cephalosporin의 치료 효과를 비교하여 보고자 전향적 연구를 시행하였다. 방법 : 2003년 1월부터 2004년 4월까지 국립 경찰병원을 방문한 52명의 폐렴 환자들을 무작위로 구분하여 Cefuroxime 또는 Azithromycin을 경구 투여 Background : The study of pneumonia among young men living in a group is rare. prospective study was conducted to determine the etiology, and compare the effects of macrolide and second-generation cephalosporin on the treatment of pneumonia among combat p
동수력학 해석 기반 부유식 해양 플랫폼의 동적 운동 및 계류력 산정
차주환(Ju-Hwan Cha),문창일(Chang-Il Moon),송창용(Chang Yong Song) 한국해양공학회 2012 韓國海洋工學會誌 Vol.26 No.2
This paper deals with numerical analyses in the context of estimations of hydrodynamic motions and dynamic loads for a floating type offshore platform using some exclusive simulation code such as code for the simulation of a floating type of offshore crane based on multi-body dynamics, along with the commercial code AQWA. Verificationsof numerical models are carried out by comparing the RAO results from the simulation code. In the verification analyses, hydrodynamic motions are examined in the frequency domain for the floating type offshore platform according to the mooring lines. Both the hydrodynamic motions and dynamic loads are estimated for floating type offshore platforms equipped with the catenary type and taut mooring lines. A review and comparisonare carried out for the numerically estimated results. The structural safety of the connection parts in an offshore structure such as a floating type offshore platform is one of the most important design criteria in view of fatigue life. The dynamic loads in the connecting area between a floating type offshore platform and its mooring lines are estimated in detail according to variations in the mechanical properties of the mooring lines. The dynamic tension load on the mooring lines is also estimated.
증례 : 쓰나미 피해지역 의료봉사 후 집단 발병한 뎅기열 3예
이승희 ( Seung Hee Lee ),이재일 ( Jae Il Lee ),문창기 ( Chang Ki Moon ),서승오 ( Seong O Suh ),김은실 ( Eun Sil Kim ),정준오 ( Jun Oh Jung ),김남중 ( Nam Joong Kim ) 대한내과학회 2006 대한내과학회지 Vol.71 No.3
10일간 쓰나미 피해 지역인 인도네시아에 의료구제를 다녀온 6명 중 3명에서 발열, 오한, 두통, 근육통을 주소로 입원하여 뎅기열 집단발병으로 진단되었고, 보존적 치료로 호전되었다. 이에 문헌고찰과 함께 보고하는 바이다. Dengue fever, which is caused by a mosquito-borne flavivirus, has become a major infectious-disease threat in tropical and subtropical areas. Dengue fever has also become a common cause of febrile infections in persons who have recently traveled. On December 26, 2004 the tsunami hit Southeast Asia. People who survived in those areas were infected with endemic disease such as dengue fever, malaria and cholera. We sent six members of the Korean medical relief team to the tsunami region. Three workers developed fever, chills and headache after leaving the tsunami region, and were diagnosed with Dengue fever. Such an outbreak of Dengue Fever in travelers is rarely reported.(Korean J Med 71:333-337, 2006)