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유한요소해석을 통한 중량물 이동대차 시저스붐의 구조 및 강도 해석
임현호,양창민,최권웅,최대우 한국산업경영시스템학회 2023 한국산업경영시스템학회지 Vol.46 No.2023
Special equipment used for snow removal is only used in the winter and must be moved into storage during non-winter seasons. However, when moving heavy equipment using a forklift within a limited space, safety accidents may occur due to deformation and damage due to the worker's limited visibility and excessive loading of heavy objects. In this study, the scissors boom of the developed heavy load transporter was conducted in two cases: link structural analysis and position-based structural analysis. In detail, the link structural analysis covers four cases of stress and safety factor according to material and thickness to optimize the specifications of the material selected during development, and the structural analysis according to position covers two cases before and after the lift, when maximum stress concentration is achieved. Safety was evaluated through finite element analysis. As a result of the study, when manufacturing a scissors boom type heavy load transporter that can withstand a load of 10 tons, the link showed safety at SS400 4.5mm or higher, and reinforcement is needed in the upper and lower structures, so it is judged to be useful in applying materials according to the load.
임현호,안규대,우광숙,김경희,김정만,김성현,한진영 대한진단검사의학회 2017 Annals of Laboratory Medicine Vol.37 No.3
Dear Editor, AML is a group of heterogeneous diseases derived from various cytogenetic and molecular abnormalities that are significant for diagnosis, treatment, and prognosis in many cases. We report a rare case of AML harboring t(11;19)(p15;p12) that was detected with whole-genome sequencing (WGS).
임현호,남창우,Im, Hyeon-Ho,Nam, Chang-U 한국섬유공학회 1997 한국섬유공학회지 Vol.34 No.7
Cellulose-chitosan blend fibers were prepared by wet spinning. The blends were made by using the mixed solvent of dimethylacetamide (DMAc) containing 9% (w/w) lithium chloride (LiCl). Chitosan to be dispersed in DMAc was well mixed with cellulose-DMAc/LiCl solution system. The properties of the blend fibers were studied in terms of crystal structure, orientation, mechanical properties, and antimicrobial activity.
ABO 부적합 수혈에 의한 급성용혈수혈반응: 치명적 증례 보고 및 문헌 검토
임현호,김경희,안규대,정인화,손영기 대한수혈학회 2018 大韓輸血學會誌 Vol.29 No.1
A 77-year-old female patient who was suspected to have had an acute hemolytic transfusion reaction was admitted to the emergency room. She received one unit of type A red blood cells in a type B patient during a total knee arthroplasty operation at another medical institution. ABO-incompatible transfusion was carried out due to an identification error between the patient and blood product. At the time of admission, acute hemolytic reaction, lactic acidosis, and disseminated intravascular coagulation were observed. She was admitted to the intensive care unit and received continuous renal replacement therapy. She maintained renal function and was moved to the general ward on the 7th day. Complications such as pulmonary edema, gastrointestinal bleeding, and ischemic colitis persisted, and the patient died on the 111th after admission. This case is the first report of death due to an ABO-incompatible transfusion in Korea. Efforts to establish a safe transfusion environment are necessary not only at individual medical institutions but also at the national level.
간세포암 환자에서 유사 특이성을 가진 자가항체의 변화 1예
임현호,김경희,정기철,안규대,우광숙,한진영,김정만 대한수혈학회 2017 大韓輸血學會誌 Vol.28 No.2
Changes in autoantibodies with mimicking specificity for Rh antigens are quite rare. Here, we report a 73-year-old male patient with hepatocellular carcinoma that showed changes in the autoantibodies with mimicking specificity. He was admitted to our hospital with mental alterations and hypoglycemia. The antibody identification test for RBC transfusion showed a pattern of agglutination, suggesting anti-E alloantibody and anti-c autoantibody. The patient was then diagnosed with hepatocellular carcinoma, and after 18 months, the antibody identification test showed a different pattern of agglutination, suggesting anti-E alloantibody and anti-C autoantibody. We recommend a careful evaluation to make sure an appropriate transfusion is performed when encountering fluctuating autoantibodies with mimicking specificity.
임현호,Shuhua Li,안규대,우광숙,김경희,김정만,김무현,한진영 대한진단검사의학회 2018 Annals of Laboratory Medicine Vol.38 No.5
Background: Clopidogrel is one of the most commonly used anti-platelet agents in cardiovascular diseases. We analyzed the relationship between the platelet function analyzer (PFA)-200 P2Y (INNOVANCE PFA-200 System, Siemens Healthcare, Germany) results and occurrence of major adverse cardiac events (MACEs) in Korean patients with recent-onset acute coronary syndrome (ACS) taking clopidogrel. Methods: Between August 2013 and June 2016, we prospectively enrolled 106 patients with recent-onset ACS who had been treated with clopidogrel. We obtained blood samples and measured closure time (CT) using the PFA-200 P2Y test. Patients were divided into two groups on the basis of a CT cut-off value of 106 seconds. We compared patient characteristics and various MACEs that occurred during the follow-up period. Results: The CTs for 78 patients exceeded the cut-off value. At the time of these analyses, 11 patients had been diagnosed with MACEs. In the time-to-event analysis, there was a difference between the two groups (P<0.001). After adjusting other variables associated with MACE occurrence, CT value was the strongest predictor of MACEs, with a 7.30-fold occurrence risk (P=0.002). Conclusions: We found a strong relationship between CT and MACE risk in Korean patients with recent-onset ACS taking clopidogrel. Accordingly, PFA-200 P2Y results could be used as a predictive marker for MACE risk in such patients.