http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Methotrexate 의 장기 복용으로 유발된 간경변증 1 예
김광국(Gwang Gook Kim),동석호(Seok Ho Dong),이효정(Hyo Jeong Lee),김효종(Hyo Jong Kim),김병호(Byung Ho Kim),장영운(Young Woon Chang),이정일(Jung Il Lee),장린(Rin Chang) 대한내과학회 1997 대한내과학회지 Vol.53 No.3
Methotrexate has been used to treat refractory psoriasis for many years. Despite its well-established clinical efficacy, drawbacks to methotrexate usage include a number of deleterious effects including hepatotoxicity, bone marrow suppression, and interstitial pneumonitis. We experienced a case of liver cirrhosis m patient with active psoriasis receiving long-term ora1 methotrexate therapy, and reported this case with review of literature.
6 wt.% 마그네슘 알루미늄 합금의 가스메탈아크 용접 특성 평가
강태훈(Tae Hoon Kang),김광국(Gwang-Gook Kim),김동윤(Dong Yoon Kim),김영민(Young-Min Kim),강문진(Mun Jin Kang) 대한용접·접합학회 2021 대한용접학회 특별강연 및 학술발표대회 개요집 Vol.2021 No.5
알루미늄 합금은 항공기, 차량, 건축 등 다양한 분야에서 폭 넓게 활용되고 있다. 경량소재인 알루미늄 합금은 첨가되는 원소에 따라 다양한 특성을 가지며 그 중 마그네슘의 함량이 높아질수록 인장강도가 높아지는 경향을 보인다. 기존에 상용화된 알루미늄 합금 판재의 마그네슘 최대 함량은 약 5.2 wt.% 수준이다. 본 연구에서는 약 6.2 wt.% 마그네슘이 함유된 알루미늄 합금 판재를 이용한 용접부 인장강도 및 단면 분석을 통해 용접부 특성을 평가하였다. 용접부 형상은 Butt joint 및 Lap-fillet joint로 수행하였다. 필러와이어는 Al5356, 직경은 1.2 mm를 사용하였고, 용접모드는 DC pulse를 사용하였다. 용접 속도는 Butt joint에서 80 cm/min, Lap fillet joint에서는 60 cm/min이었고, 차폐가스는 100% Ar, 유량은 15 L/min으로 고정하였다. 적정 용접 구간을 찾아 실험을 수행하였고, 각 조건 별 용접부 특성을 평가하였다.
맞대기 V형 그루브의 GMA 초층용접에서 합성곱 신경망을 이용한 이면비드 발생 예측 모델 개발
이형원(Hyung Won Lee),유지영(Jiyoung Yu),김광국(Gwang-Gook Kim),김영민(Young-Min Kim),황인성(Insung Hwang),이승환(Seung Hwan Lee),김동윤(Dong-Yoon Kim) 대한용접·접합학회 2021 대한용접·접합학회지 Vol.39 No.5
Gas metal arc (GMA) welding is widely used in the machinery industry. The quality of a welded joint is affected by the penetration of root pass welding in the V-groove joint. Automation using GMA welding is continuously required, and root pass welding automation is required to automate the entire welding process. In particular, the development of a prediction model that can ensure full penetration back-bead is required for the automation of root pass welding. In this study, a convolutional neural network (CNN) model was applied to predict the occurrence of back-bead in V-groove butt joint GMA root pass welding. The bead profile was measured using a laser vision sensor system and it was used as the input data for the prediction model, and the bead occurrence was used as the output data for the model. A total of 12,873 bead profiles were extracted and pre-processed through cutting, resizing, and thresholding. The CNN model consists of nine layers, and performs three convolution and two pooling operations. The accuracy of the prediction model was 99.5%, and through this study, it was demonstrated that the quality of root-pass welding can be controlled by using convolutional neural network and it can contribute to automation.
김병호,김효종,정인경,장린,이정일,동석호,장영운,김광국,황일섭,김윤화 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.1
Although intestinal bleeding is known to occur in amyloidosis, it is rare as a presenting symptom or sole manifestation of the disease. We experienced a case of intestinal hemor-rhage in a 64-year old female patient with primary amyloidosis, kappa type. Antral muco-sal erosions were discovered and one shallow healing ulcer at the angle. Colonoscopy revealed multiple purplish nodules in the sigmoid colon and descending colon, as well as a large shallow ulcer with blood clots in the sigmoid colon which was suspected to be the intestinal hemorrhage site. Endoscopic biopsy established amyloidosis. Polarizing microscopy after Congo red staining and immunohistochemical staining identified primary amyloid, kappa type. A case of intestinal hemorrhage in patients with primary amyloidosis is presented and the literature is reviewed.
이영진,차동수,최현일,양석우,정인배,조미연,고양순,김광국 대한부인종양 콜포스코피학회 2000 Journal of Gynecologic Oncology Vol.11 No.3
Dysgerminoma developed in a 21-year-old phenotypic female patient with 46,XY pure gonadal dysgenesis, Swyer syndrome. This patient presented with pelvic mass associated with abdominal pain and primary amenorrhea. Clinical characteristics showed a typical stigmata of gonadal dysgenesis: primary amenorrhea, sexual infantilism, a small uterus and left streak gonad. A 46,XY karyotype was made by lymphocyte culture. The patient was counseled to undergo operation, chemotherapy and hormon therapy. She underwent bilateral gonadectomy with total hysterectomy, partial omentectomy and multiple pelvic wall random biopsy. Histological examination revealed dysgenetic gonads with dysgerminoma. After surgery, the patient received chemotherapy and also was started on hormone replacement therapy. She is currently alive with no evidence of disease after 19 months from surgery.