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Axillofemoral Bypass to Treat Severe Heart Failure Caused by Takayasu’s Arteritis
방지현,김종욱,정성호,임주영 대한흉부외과학회 2012 Journal of Chest Surgery (J Chest Surg) Vol.45 No.2
Takayasu’s arteritis is an inflammatory vasculitis that primarily affects the aorta and its major branches. Involvement of the thoracic and abdominal aortas, although rare, causes marked hypertension and may lead to severe heart failure. We report the improvement of cardiac function after axillofemoral bypass grafting in a 59-year-old woman who had this condition.
Heart Transplantation in a Patient with Left Isomerism
방지현,박정준,오유나,유재석,김재중,박천수 대한흉부외과학회 2015 Journal of Chest Surgery (J Chest Surg) Vol.48 No.4
We report the case of a 37-year-old man who suffered from biventricular failure due to left isomerism, inferior vena cava interruption with azygos vein continuation, bilateral superior vena cava, double outlet of right ventricle, complete atrioventricular septal defect, pulmonary stenosis, and isolated dextrocardia. Heart transplantation in patients with systemic venous anomalies often requires the correction and reconstruction of the upper & lower venous drainage. We present a case of heart transplantation in a patient with left isomerism, highlighting technical modifications to the procedure, including the unifocalization of the caval veins and reconstruction with patch augmentation.
Acetylcholinesterase activity in the brain of wild birds in Korea—2014 to 2016
방지현,구현옥,강환구,김효비,김수희,박성원,김용상,장일,배유찬,우계형,이희 대한수의학회 2019 Journal of Veterinary Science Vol.20 No.2
Acetylcholinesterase (AChE) activity level can be used as a diagnostic marker for anticholinesterase pesticide poisoning. In this study, we aimed to establish a baseline level of normal brain AChE activity in wild birds. AChE activity was measured in the brains of 87dead wild birds (26 species). The level of AChE activity ranged from 6.40 to 15.9 µmol/min/g of brain tissue in normal wild birds. However, the brain tissue AChE activity level in wild birds exposed to organophosphate (OP) pesticide was 48.0%–96.3% of that in the normal birds. These results may serve as reference values to facilitate routine diagnosis and monitoring of OP-poisoned wild birds.
딥러닝 기반의 객체 탐지 모델을 활용한 과수 생육 단계 판별 시스템
방지현,심춘보,박준,박성욱,김준영,정세훈 (사)한국스마트미디어학회 2022 스마트미디어저널 Vol.11 No.4
Recently, research and system using AI is rapidly increasing in various fields. Smart farm using artificial intelligence and information communication technology is also being studied in agriculture. In addition, data-based precision agriculture is being commercialized by convergence various advanced technology such as autonomous driving, satellites, and big data. In Korea, the number of commercialization cases of facility agriculture among smart agriculture is increasing. However, research and investment are being biased in the field of facility agriculture. The gap between research and investment in facility agriculture and open-air agriculture continues to increase. The fields of fruit trees and plant factories have low research and investment. There is a problem that the big data collection and utilization system is insufficient. In this paper, we are proposed the system for determining the fruit tree growth stage using a deep learning-based object detection model. The system was proposed as a hybrid app for use in agricultural sites. In addition, we are implemented an object detection function for the fruit tree growth stage determine. 인공지능 기술의 발전으로 다양한 분야에서 AI가 접목된 시스템에 대한 관심이 급증하고 있다. 농업에서도 정보통신 기술을 적용한 스마트팜이 활용되고 있으며, 자율주행, 인공위성, 빅데이터 등의 다양한 첨단 기술을 접목하여 데이터 기반의 정밀 농업이 상용화되고 있다. 국내의 경우 시설농업 분야 스마트농업의 상용화 사례가 증가하고 있으나 시설원예 분야에 투자 편증이 심하여, 시설농업과 노지 농업의 투자 격차가 지속해서 벌어지고 있다. 특히, 과수, 식물공장 분야는 투자 규모가 작다. 또한, 빅데이터 수집, 활용 체계가 미흡하다는 문제점이 있다. 이에 본 논문에서는 농업의 빅데이터를 활용하는 방안으로 딥러닝 기반의 객체 탐지 모델을 활용한 과수 생육 단계 판별 시스템을 제안한다. 해당 시스템은 농업 현장에서 사용할 수 있도록 하이브리드 앱을 설계 및 구현하며 과수 생육단계 판별을 위한 객체 탐지 기능을 제공한다.
기관지천식 환자의 효과적인 치료를 위한 청상보하탕(淸上補下湯)의 임상적 관찰
방지현,정희재,정승기,Bang, Ji-Hyun,Jung, Hee-Jae,ung, Sung-Ki 대한한방내과학회 2011 大韓韓方內科學會誌 Vol.32 No.1
Objectives : Asthma is considered an inflammation disease characterized by airway hyperresponsiveness and pulmonary eosinophilia. Chungsang boha-tang is a herbal medication which has been frequently used in traditional therapeutic agents for asthma. We aimed to observe the clinical effects of Chungsangboha-tang on blood eosinophil, serum IgE, AST, ALT and pulmonary function in asthmatic outpatients. Methods : The subjects consisted of 66 asthmatic patients who had been treated with Chungsangboha-tang among all the asthmatic patients who visited the 5th Internal Medicine of the Oriental Medicine Hospital of Kyung Hee University from November,2004 to November,2009. We observed blood eosinophil, serum IgE, AST, ALT levels and pulmonary function test results as well as medical records of patients to evaluate the effects. Results : Pulmonary function significantly improved after 8 weeks of treatment, and blood eosinophil and serum IgE level significantly decreased after 8 weeks of treatment. AST, ALT levels changed in normal ranges. Chungsangboha-tang was significantly effective on the male patients who had a smoking history and worse initial lab findings. We also observed a significant improvement of pulmonary function and decrease of eosinophil and serum IgE levels in the patient group who had a single treatment of Chungsangboha-tang without steroid therapy. Conclusions : This study shows that Chungsangboha-tang has effects on the improvement of pulmonary function and decrease of eosinophil and serum IgE levels as well as improvement of symptoms. And, 8 weeks of long-term treatment showed no negative effects such as significant increase of AST, ALT levels.
문화 수업이 영어 학습자의 불안과 텍스트 공감능력에 미치는 영향
방지현 21세기영어영문학회 2023 영어영문학21 Vol.36 No.1
The purpose of this paper is to examine the effect of a cross-cultural lesson on learners’ reading anxiety and critical thinking related to empathy by using the learners’ mother culture as schema. As research materials for this study, the Korean film ‘Physiognomy’ and the play ‘Macbeth’ were selected. The subjects were divided into two groups: the control group who read the play but did not view the film and the experimental group who read it after watching the movie. After four weeks of the reading classes, each group’s reading anxiety and critical thinking related to empathy were measured, and the results are as follows. First, there was a difference between the control group and the experimental group in terms of reading anxiety. The subjects in the experimental group felt less reading anxiety than the control group. Second, by using the Korean film as prior knowledge of their mother culture, the subjects in the experimental group expanded their empathy about the characters in the play more than the control group did. The results have pedagogical implications for English reading classes.
방지현,박천수,오유나,고재곤,강소연,백재숙 대한흉부외과학회 2015 Journal of Chest Surgery (J Chest Surg) Vol.48 No.1
Although heart transplantation is a final therapeutic option in pediatric patients with dilated cardiomyopathy (DCMP),the shortage of pediatric heart donors is a major obstacle. In adults with DCMP characterized by cardiac dyssynchrony,cardiac resynchronization therapy (CRT) is known to be an effective treatment option. However, there is alack of evidence on the effectiveness of CRT in infants with DCMP. Several studies have reported improvement inhemodynamics and cardiac performance following CRT in infants with DCMP. Here, we report CRT in an infantwith DCMP during extracorporeal membrane oxygenation with 5 months of follow-up.
방지현,김종욱,이재원,김준범,정성호,주석중,정철현 대한흉부외과학회 2012 Journal of Chest Surgery (J Chest Surg) Vol.45 No.2
Background: The aim of this study is to evaluate our institutional results of the aortic valve replacement through minimally invasive approaches compared with conventional sternotomy. Materials and Methods: From August 1997 to July 2010, 838 patients underwent primary isolated aortic valve replacement. Of them, 73 patients underwent surgery through minimally invasive approaches (MIAS group) whereas 765 patients underwent surgery through the conventional sternotomy (CONV group). Clinical outcomes were compared using a propensity score matching design. Results: Propensity score matching yielded 73 pairs of patients in which there were no significant differences in baseline profiles between the two groups. Patients in the MIAS group had longer aortic cross clamp than those in the CONV group (74.9±27.9 vs.. 66.2±27.3, p=0.058). In the MIAS group, conversion to full sternotomy was needed in 2 patients (2.7%). There were no significant differences in the rates of low cardiac output syndrome (4 vs. 8, p=0.37), reoperation due to bleeding (7 vs. 6, p=0.77), wound infection (2 vs. 4, p=0.68), or requirements for dialysis (2 vs. 1, p=0.55) between the two groups. Postoperative pain was significantly less in the MIAS group than the conventional group (pain score, 3.79±1.67 vs. 4.32±1.56; p=0.04). Conclusion: Both minimally invasive approaches and conventional sternotomy had comparable early clinical outcomes in patients undergoing primary isolated aortic valve replacement. Minimally invasive approaches significantly decrease postoperative pain.