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태양열을 받는 경사진 육면체 내 해수의 응축특성에 관한 실험적 연구
김범한(Kim,Beom-Han),김병철(Kim,Byung-Chul) 한국태양에너지학회 2011 한국태양에너지학회 논문집 Vol.31 No.4
To find effective way or the production of distilled water for drought and flood with solar radiation. three boxes were made same base each 1000㎜ × 1000㎜ and tops are 45 degree. Individual boxes contained the sea water, rain water and surface water were placed at the same location and same time. Condensation of each box has been compared. On clear day production of distilled water in the box with sea water was 36% and 32% less than boxes with rain water and surface water. The maximum condensation reached when the temperature of the top and bottom parts are equal. As concentration of sea water increased production of distilled water was decreased. In the box with sea water, the surface temperature was lower than 3cm below the surface. Optimum collector area for producing distilled water 2000㎖ of these three boxes were 3.75㎡.
다양한 환경의 AMI 구성을 위한 유무선 네트워크를 지원하는 브릿지 모뎀 개발 사례
한정훈 ( Han Jeong Hoon ),김용배 ( Kim Yong Bae ),김범 ( Kim Beom Joo ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.2
이 가능한 솔루션 개발에 있어 통신환경 둥을 고려하였을 때 다양한 통신기술에 맞춰 원격검침 서비스를 제공할 수 있는 복합 브릿지 모뎀의 개발 사례를 다루고자 한다. 유무선 복합 기술을 적용하기 위해 TVWS 대역 무선 통신, 저속 PLC를 복합적으로 적용하였다. 본 개발 모뎀은 현재 시작품 형태로 제작이 되어 있으며, 현재 진행 중인 연구가 완료되는 시점에는 제품수준의 복합 모뎀이 산출될 예정이다.
김한철,김범 대한골절학회 2000 대한골절학회지 Vol.13 No.3
Purpose: To compare operative results between pull-out wiring and retrograde screw fixation for displaced tibial intercondylar eminence fracture. Materials and Methods: From March 1997 to February 1999, authors carried out pull-out wiring in 3 patients and retrograde screw fixation in 5 patients who sustained typeII and typeIII displaced tibial intercondylar eminence fractures follow up for 16 months(mean). Results; The Union time was mean 7 wk in pull-out wiring and 6.5 wk in retrograde screw fixation. Limitation of knee motion(1 case) developed in retrograde screw fixation group and reoperated for adhesiolysis. Pull-out wiring group were all full motion recovered. Anterior instability(1 case) developed in retrograde screw fixation group and pull-out wiring group had no instability. Operation time for retrograde screw fixation group was mean 98min and pull-out wiring group was 105 min. Conclusion: The outcome of pull-out wiring group were superior to retrograde screw fixation group. It can be stably fixed and allow early motion exercise. Besides, in case of small bony fragment, it is difficult for fixation with screw. And even impossible. In child cases, the multiple percutaneous pinning can lead to good result. So authors believe that pull-out wiring is worthy for tibial intercondylar eminence fracture.