A5102831503- Cavitation Phenomena in Pumps
- Hydraulic flow and structures
- Aerodynamics and Acoustics in Jet Flows
- Underwater Acoustics Research
- Underwater Vehicles and Communication Systems
- Flow Measurement and Analysis
- Fluid Dynamics Simulations and Interactions
- Ship Hydrodynamics and Maneuverability
- Fluid Dynamics and Vibration Analysis
- Fluid Dynamics and Mixing
- Numerical methods in inverse problems
- Neurofibromatosis and Schwannoma Cases
- Oil Spill Detection and Mitigation
- Head and Neck Anomalies
- Tracheal and airway disorders
- Thyroid and Parathyroid Surgery
- Meningioma and schwannoma management
- Advanced Mathematical Modeling in Engineering
- Stability and Controllability of Differential Equations
- Lung Cancer Diagnosis and Treatment
- Medical Imaging Techniques and Applications
- Pleural and Pulmonary Diseases
- Breast Lesions and Carcinomas
- Management of metastatic bone disease
- Thyroid Cancer Diagnosis and Treatment
Inje University Haeundae Paik Hospital
2025
Chungnam National University
2021-2023
Korea Research Institute of Ships and Ocean Engineering
2022
Daewoo Shipbuilding and Marine Engineering (South Korea)
2021-2022
Gyeongsang National University
2013
Dong-A University
2013
Background: The longest reported follow-up for thermal ablation of papillary thyroid microcarcinoma (PTMC) is 5 years. We evaluated the long-term efficacy and safety radiofrequency (RFA) in patients with low-risk PTMC clinical more than 10 Methods: In this retrospective cohort study, we included who had years after ultrasound (US)-guided RFA (performed between May 2008 December 2013). Sixty-five consecutive 71 PTMCs were unsuitable surgery or declined included. Before RFA, all underwent US...
The applicability of leading-edge protuberances as a passive flow control approach inspired by humpback whale flippers has attracted significant research attention in aquatic and aeronautic systems because their influence on critical hydrodynamic aerodynamic aspects. An experimental investigation is conducted cavitation tunnel under various conditions to determine the effectiveness controlling detrimental effects suppressing flow-induced noise. experiments are carried out four National...
Transthoracic biopsy of peripheral lung lesions under ultrasonography (US) guidance is a useful diagnostic technique. However, factors affecting yield US-guided transthoracic are not well established.To determine the that influence in lesions.A total 100 consecutive patients underwent percutaneous cutting from October 2007 to March 2009. After seven unconfirmed cases were excluded, 97 procedures 93 included this study. The accuracy biopsies was assessed by comparing results with final...
Tip vortex flow is crucial in designing and operating several engineering applications. In this work, the effect of tip fins on non-cavitating cavitating conditions investigated experimentally. Rectangular hydrofoils with without fin tips are considered. The hydrofoil placed a water tunnel at an angle attack α = 15° velocity field measured using laser Doppler velocimetry (LDV) plane sections. A high-speed camera used to visualize cavitation (TVC), pressure transducers employed for acoustic...
The injection of air bubbles into the liquid phase a freestream flow has several impacts on structure, which depends volume and size bubbles. This work experimentally investigates characteristics bubble using three different injector models. effects curtain sound wave attention are studied. A wide range rates from 2 to 50 standard liters per minute is injected water at Froude numbers (Fr) 50.5, 70.7, 90.9. model placed sidewall, where generated. High-speed cameras an image processing...
Tip vortex cavitation is one of the most classical themes in fluid mechanics. Although many experimental and theoretical studies have been performed, unsolved problems still remain. In particular, trailing vortices at tip hydrofoil directly affects hydrodynamic acoustic performance submerged objects such as marine propeller, rudder various foil-shaped appendages ship. this study, results from measurements two different three-dimensional hydrofoils are presented. Experiments carried out...
We consider a degenerate equation with memory condition at the boundary. For wider class of relaxation functions, we establish more general decay result, from which usual exponential and polynomial rates are only special cases.
57세 여자 환자가 12년 전 유방암으로 유방절제술을 받고 추 척 검사를 위해 본원에 내원하였다. 환자는 수술 선행화학 요법을 5차례 시행 후 변형근치유방절제술과 복직근피판술을 받았으며 병기는 T2N0M0였다. 항암요법을 6개월, 호르몬 치료를 5년간 받았고 이후 추척 검사에서 특이소견은 발견되지 않았다. 이번 내원시에 무증상이었고 이학적 검사에서도 특이사항이 없었다. 초음파 5 × 3 mm 크기의 타원형의 경계가 좋은 저에코 결절이 오른쪽 흉벽 5시 방향에 관찰되었고 피부 의 상처의 내측 가장자리의 직하방 대흉근 내에 위치하였 다(Fig. 1A, B). 색 도플러 초음파에서 결절 내부에 혈류는 보 이지 않았다(Fig. 1C). 환자의 소견과 한 과거력으로 인해 유방암의 재발을 의심하고 유도하 14게이지 코어침생검을 시행하였다. 조직검사 결과 다양한 신경 섬유다발이 섬유교원질 불규칙하게 증식해 있었다. 섬유다발은 축삭과 섬유 집세포(Schwann’s cell), 신경외막세포,...
Air injection in water has several engineering advantages, such as air lubrication system, cavitation control, and noise reduction. The present study investigates the effect of rate stream velocity on bubble layer volume fraction, thickness, mitigation. fraction is controlled through 2 to 25 SLPM at different velocities. Froude number range 30.30 70.7. image processing technique quantifies projected void thickness. injected a multi-hole pipe placed modified NACA 0010 hydrofoil with 100 mm...