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빈발재발성 미세변화 신증후군환아에서 발생한 다발성 뇌경색증
조성옥,한헌석,차상훈,이경희,박범수,하태선,채수안 충북대학교 의과대학 충북대학교 의학연구소 1995 忠北醫大學術誌 Vol.5 No.2
신증후군에서는 동맥 및 정맥의 혈전에 의한 혈전색전증의 위험이 높다. 이는 혈 중 응고인자 Ⅰ, Ⅱ, Ⅶ, Ⅷ, Ⅹ등의 증가와 뇨소실로 인한 antithrombin Ⅲ의 감소, 섬유소 용해계의 변화, 혈소판 응집력의 증가에 기인하며 그 외 스테로이드 투여, 이뇨제 투여, 저체액 상태도 관여한다고 생각하나 이런 과응고현상에 대한 정확한 병태생리는 규명되고 있지 않다. 저자들은 내원 21개원 전 처음 신증후군 증상을 보였고 신장 조직 검사상 미세변화 신증후군으로 진단을 받고 스테로이드와 면역 억제제를 사용하였으나 6개월에 3-4회의 재발을 보이던 중 내원 1달 전 보호자 자의로 모든 약물 복용을 중단한 채로 지내다가 고열과 반혼수 상태를 보여 내원한 7세 남아에서 다발성 뇌경객증을 발견하였기에 문헌 고찰과 함께 보고하는 바이다. The risk of thromboembolism by arterial or venous thrombosis is high in the nephrotic syndrome. This may be due to the increased serum concentrations of the factor Ⅰ, Ⅱ, Ⅶ, Ⅷ, Ⅹ etc, decrease of antithrombin Ⅲ due to urinary loss, the change of thrombolytic system, increase in the platelet aggregation capacity, the use of steroid, diuretics, and hypovolemic state. But, the pathophysiology of this hypercoagulable state has not been clear. A 7-year- old boy had been diagnosed as having frequently relapsing minimal change nephrotic syndrome, 21 months ago. In spite of the administration of prednisolone and cytoxan, he had presented recurrent proteinuria in the frequency of 3-4 times per 6 months. From 1 month prior to visiting emergency room, his parents discontinued his medications, therefore, he showed fever and semicomatous mental status. In brain MRI study, multiple cerebral infarcts were noted. So, the authors report a case of multiple cerebral infarcts in a patient with frequently relapsing minimal change nephrotic syndrome with a brief review of related literature.
김상효,조성범,정재익 연세대학교 산업기술연구소 1996 논문집 Vol.28 No.1
The steel-box girder decks are widely adopted for middle and long-span bridges due to many advantages, when comparing with other open-section girder types, such as higher torsional rigidity, better resistance against corrosion, etc. In current design practice, the design variables of steel-box girder are selected mainly on the basis of engineer's experience and direct observation. Then the assumed sections are checked for design limit states. Therefore, the resulted design sections are doubtful in the optimum viewpoint. To achieve more rational design, systematic design procedure is required, by which the design constraints on steel-box girders are satisfied and the design variables of minimum cost are obtained. Generally both bending moments by transverse loads and torsional moments by eccentric loadings are the most important load effects in curved steel-box girder bridges. Therefore, an optimization program is developed to consider the torsional moment in addition to other load effects. The efficiency of the developed program has been verified by redesigning some sections selected from existing bridge designs. The resulting optimum sections with discrete variables are found to be cost-saving and comparable with original sections. Based on the parametric studies performed for mainly radius of curvature on curved bridge and bridge width, some essential guidelines for rational design of curved steel-box girder bridges are suggested.
조미영,강승원,임홍규,조성범,채희선,이달주,이정학,이병동 한국수의공중보건학회 2001 예방수의학회지 Vol.25 No.2
To demonstrate the prevalence of Toxocara spp. eggs in public playgrounds in Seoul city, sand samples collected from March to October in 2000 were examined. Of 1,812 sand samples from 302 playgrounds surveyed, Toxocara canis eggs were detected in 38 sands from 22 place(7.3%). Sand samples in public parks were more contaminated (10%) with the eggs than those in apartment complex area(7.1%) and in residential area(6.8%). Toxocara canis eggs were mostly found in sands in the spring and autumn but were not found in summer. To prevent the comtamination of Toxocara spp. eggs in the public places, the control of dogs and cats wandered do out there will be needed.
WBAN을 위한 무선 USB 프로토콜의 에너지 효율적인 시간동기기술에 관한 연구
이성로 ( Seong-ro Lee ),김범무 ( Beom-mu Kim ),전성민 ( Sung-min Jeon ),조용옥 ( Yong-ok Jo ),김진우 ( Jin-u Kim ),허경 ( Kyung Hur ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.1
본 논문에서는 WBAN을 위한 무선 USB 프로토콜의 에너지 효율적인 시간동기 알고리즘에 대한 연구이다. 에너지 효율적인 즉, 전력 소모를 최소화하기 위한 정밀한 시간동기 알고리즘을 제안한다. 본 논문에서 제안하는 시간 동기 알고리즘은 WBAN에서 무선 USB의 센서노드의 Time Stamp 패킷을 송수신하는 방식으로 전력소모를 최소화한다.