도봉산 역사 조경설계 : 인공지반을 중심으로

학위논문(석사)--서울대학교 환경대학원 :환경조경학과,2001.Maste

석면방직업 근로자의 석면노출 실태와 과거농도 추정에 관한 연구

학위논문(석사)--서울대학교 보건대학원 :환경보건학과,1995.Maste

성견 일벽성 골내 결손부에서 교차결합된 교원질과 혼합된 돼지 유래 이종골의 공간 유지능에 관한 연구

Dept. of Dental Science/석사The aim of this study was to evaluate the effect of a cross-linked collagenated porcine bone (CPB) in surgically prepared one-wall intrabony defects in dogs.Buccolingually opened, one-wall, box type, intrabony periodontal defects (4 × 5 mm) were prepared bilaterally at the mesial side of the mandibular fourth premolars in beagle dogs (N = 5). Block-type CPB (4 × 5 × 5 mm) was placed alternatively on either the left or right side for the CPB group, the opposite site served as sham-surgery controls. After 3 months, block specimens were obtained. Microcomputed tomographic and histological analysis were performed.The mean of bone regeneration (BR) and cementum regeneration (CR) of experimental group were lower than those of sham-surgery control group. Much of the porcine bone particles were located under the floor of the defect and were sequestered from pristine bone. It can be concluded that CPB can be localized within the defect for wound healing period by cross-linking, however, applying CPB alone without barrier membrane may not be effective to promote periodontal regeneration in noncontained type defects.ope

유기성 폐기물과 알칼리 안정화제가 첨가된 연안 양식장 퇴적물 조비료의 영양성분 조성

22kciothe

잘피(Zostera marina)서식지 복원을 위한 최적 이식방법 및 시기 선정에 관한 연구

22kc