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요추 추간판 탈출증을 동반한 대퇴골두 무혈성 괴사 초기 진단 받은 환자를 대상으로 시행한 고관절 MST 및 한방 보존적 치료 치험 1례
백상현,김민우,엄관준,양승희,이승열,Baek, Sang-Hyun,Park, Min-Woo,Eom, Kwan-Joon,Yang, Seung-Hee,Lee, Seung-Yeol 척추신경추나의학회 2013 척추신경추나의학회지 Vol.8 No.2
Objectives : The Purpose of this study is to investigate the clinical application of conservative treatment including hip joint MST for lumbar HIVD(Herniated Intervertebral Disc) and early developed avascular necrosis of femur head. Methods : Patient is hospitalized at Dept. of Oriental Internal Medicine, Jaseng Oriental Medicine Hospital, diagnosed as lumbar HIVD(Herniated Intervertebral Disc) and early developed Avascular Necrosis of Femur Head and treated by herbal medicine, acupuncture, moxibustion and hip joint MST. This study was measured by NRS(Numeric Rating Scale), ODI(Oswestry Disability Index) and ROM(range of motion). Results : After conservative treatment, the patient's pain was controlled and NRS score was decreased. ODI and ROM also were improved. Conclusions : As seen in this one case, Oriental conservative treatment including hip joint MST has a positive effect to control pain with lumbar HIVD(Herniated Intervertebral Disc) and early developed avascular necrosis of femur head.
소아에서 항문 내초음파 검사상 정상 항문관의 형태학적 소견
백상현,박경남,박진수,유수영,Baek, Sang-Hyun,Park, Kyung-Nam,Park, Jin-Su,Yoo, Soo-Young 대한소아외과학회 1998 소아외과 Vol.4 No.2
Anal endosonography has recently been popularized in adult patients in order to access staging of rectal cancer and other lesions of the anorectum. This study is not familiar to pediatric surgeons. We performed anal endosonography in 30 children without anorectal disease in order to determine the standard morphology of the anorectum. The internal anal sphincter(IAS) was clearly identified as a homogeneous hypoechoic circular band, extending caudally to a level just proximal to the anal verge. The external anal sphincter(EAS) showed mixed echogenicity and different architecture along the anal canal; the EAS was U-shape in the upper canal and it had a circular pattern in the lower canal. In the upper canal of girls, the perineal body and the vagina were found just anterior of the anal canal, which made the U shape of the EAS. In the male, the sphincter tapered anteriorly into two arcs that met in the midline. The perineal body was prominent in the female. Posteriorly, the anococcygeal ligament was represented by a triangular shadow in both sex. The thickness of the IAS was measured in 3 directions, left, right and posterior, at 3 levels, upper, middle and lower areas of the anal canal. The average thickness was 0.86-2.40 mm between 6 and 18 months of age(Group 1), 0.88-3.20 mm between 19 and 36(Group 2), 1.07-2.20 mm between 37 and 54(Group 3) and 1.18-2.42 mm more than 54-month-old(Group 4). The thickness was correlated with the age of the children only in the right upper(p=0.008) and the left middle portion(p=0.015). We were able to obtain standard morphologic features of the normal anal canal in children with anal endosonography. We believe that this technique is a safe and an effective procedure to evaluate anorectal lesions in children.
백상현,이인희,김민정,김은지,하인혁,이진호,이재웅,Baek, Sang-hyun,Lee, In-hee,Kim, Min-jeong,Kim, Eun-jee,Ha, In-hyuk,Lee, Jin-ho,Le, Jae-woong 대한한방내과학회 2015 大韓韓方內科學會誌 Vol.36 No.2
Objectives: The marker substances of cultivated wild ginseng pharmacopuncture that may not be detected during the process of steaming remain controversial. We developed a combined cultivated wild ginseng pharmacopuncture that contains all the marker substances. The aim of this experiment was to investigate the marker substances and test the toxicity of the combined cultivated wild ginseng pharmacopuncture. Methods: The marker substances were detected using HPLC. Intravenous injection toxicity studies were conducted at Medvill, an authorized institution for non-clinical studies, under the regulations of Good Laboratory Practice. We observed survival rates, abnormal behaviors, weight changes, gross findings in autopsy, blood biochemical properties, and histological abnormalities of organs such as the liver and kidney. Results: HPLC data showed that ginsenosides Rg1, Rb1, and Rg3 were detected at concentrations of 19.29, 47.64, and 3.02 μ g /ml, respectively. Administration of combined cultivated wild ginseng pharmacopuncture resulted in no dead animals or significant toxicological changes. Conclusions: The combined cultivated wild ginseng pharmacopuncture contains all the marker substances and is a relatively safe treatment medium. Further studies should be conducted to confirm the present findings.
백상현(Sang-Hyun Baek),김재훈(Jai-Hoon Kim) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.1A
분산 데이터 관리 시스템에서는 여러 사용자에게 빠른 응답시간으로 원하는 데이터를 사용할 수 있도록 하기위해 데이터의 부분(fragment)을 효과적으로 복제(replication)하고 할당(allocation)하는 방법이 필요하다. 이동 컴퓨팅에서는 데이터를 관리할 때 이동 컴퓨팅 환경의 특징인 사용자들의 이동 특성과 무선 통신망의 전송 용량을 고려해야 한다. 본 논문에서는 이동 컴퓨팅 환경에서 사용자들의 이동 특성, 그리고 통신망의 전송용량을 반영하여 데이터를 효과적으로 복제하고 할당하기 위한 방법을 제안하고 성능을 측정하였다.
DSM 시스템에서 통신 부하의 가중치를 고려한 경쟁적인 갱신 프로토콜
백상현(Sang-Hyun Baek),김재훈(Jai-Hoon Kim) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.1A
분산 공유 메모리(Distributed Shared Memory)시스템은 분산시스템에서 프로그래머가 쉽게 프로그램을 작성할 수 있는 환경을 제공한다. 분산 공유 메모리에서는 노드사이에 다중의 블록 복제가 허용되고, 이들간 일치성을 유지하기 위하여 무효화 방식(Invalidate protocol)과 갱신 방식(Update protocol)이 전통적으로 많이 사용되었다. 이 두가지 프로토콜의 성능은 시스템 변수 또는 응용 프로그램의 공유 메모리 사용 형태의 다라 좌우된다 [12]. 보다 적은 비용으로 효율적으로 일치성 유지를 하여 많은 연구가 진행 되었다. 이중 Competitive update protocol은 복제된 블록에 대한 갱신(update) 횟수의 한계값을 두어 이에 따라 update 또는 invalidate를 선택적으로 수행한다 [6]. 본 논문에서는 노드사의 통신 비용이 동일하지 않은 구조에서 Competitive update protocol의 성능을 높이기 위해 갱신 횟수를 각 노드 사이의 통신 부하에 따라 다르게 적용하여 통신 환경을 반영 할 수 있는 Weighted competitive update protocol)을 제안하고 성능을 비교분석 하였다.