http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
개별검색 DB통합검색이 안되는 DB는 DB아이콘을 클릭하여 이용하실 수 있습니다.
통계정보 및 조사
예술 / 패션
<해외전자자료 이용권한 안내>
- 이용 대상 : RISS의 모든 해외전자자료는 교수, 강사, 대학(원)생, 연구원, 대학직원에 한하여(로그인 필수) 이용 가능
- 구독대학 소속 이용자: RISS 해외전자자료 통합검색 및 등록된 대학IP 대역 내에서 24시간 무료 이용
- 미구독대학 소속 이용자: RISS 해외전자자료 통합검색을 통한 오후 4시~익일 오전 9시 무료 이용
※ 단, EBSCO ASC/BSC(오후 5시~익일 오전 9시 무료 이용)
This study was performed to investigate the effects of change of the head posture and of the chewing side preference on the tooth contact pattern. For the study, the author randomly selected 44 dental students without any signs and symptoms of temporomandibular disorders. The head postures taken in this study were 4 postures : natural head posture(NHP), upward head posture(UHP), downward head posture(DHP), and forward head posture(FHP). Each head posture except natural head posture was observed in two postures by angle of head inclination, 10 and 20 degree, respectively. Electronic occlusal contact analyser, T-Scan(Tekscan Co., USA), was used to record tooth contact pattern related to contact number, force, duration, and total left-right statistics(TLR) which was occlusal unbalance between left and right dental arch on clenching. Difference of value between in preferred chewing side and in contralateral chewing side in same head posture and differences by head postures were analyzed. The results obtained were as follows : 1. Mean value of contact number and force in natural head posture were the highest and the difference between the postures by head inclination in each head posture except in natural head posture was significant in general. 2. Mean value of contact number and force in upward head posture and in downward head posture were higher in 20 degree head inclination than in 10 degree head inclination, and the score of the occlusal unbalance between left and right dental arch(TLR) on clenching was lowered in 20 degree whereas the pattern in forward head posture showed reverse tendency. 3. Contact duration in natural head posture was the longest, and there was no difference in duration between in 10 and in 20 degree head inclination in other postures. 4. In unilateral chewing subjects, contact number and force were always higher in left side without regard to preferred chewing side. 5. Correlation in contact number and in force between head postures were highly significant, but correlation between items of contact pattern was shown between number and force only.
This paper describes the design of model-based fault diagnosis software to apply to the propulsion system in tracked amphibious assault vehicle which consists of an engine, a transmission, a cooling system, and two waterjets. This software includes specific functions to detect the failures regarding sensor malfunctions, mechanical malfunctions, control errors, and communication errors. This software generates the proper malfunction codes which are classified as the warning and caution. In order to validate the fault diagnosis software, the manual and automatic test are performed using the test program with 32 test cases. Test results show that the designed fault diagnosis software is reliable and effective for applying to the propulsion system.
This study was undertaken to observe the effect of GK-101E upon the carious dentin of human tooth in vitro electron microscopically. Normal dentin, the 1st and 2nd layer determined by staining with basic fuchsia were examined for control. The carious dentin was removed by use of excavator, low speed engine and caridex system. The dentin blocks including the treated surface were fixed in karnovsky solution decalcified in 596 EDTA solution and prepared for electron microscopic observation. The results were as follows: 1. The normal dentin showed dentinal tubules, limiting membrane, peritubular dentin and intertubular dentin consisting of tight network of collagen fibers. 2. The 1st layer of carious dentin had the dentinal tubules full of bacteria. The bacteria penetrated the matrix according to regular pattern. The 2nd layer looked similar to normal dentin. 3. The surface of excavator group was covered with irregular smear layer and the superficial intertubular dentin looked destructed more or less. 4. The smear layer with regular width consisting of granular substances was observed covering the surface of low speed engine group. The remaining dentin looked healthy. 5. The surface of GK-101E group was very irregular due to continuous sharp ridges The superficial collagen fibers had fraying ends and remaining dentin showed almost normal appearance. Taken all together, since the smear layer was not formed and the surface texture was favorable to fit the filling material and the 1st layer of carious dentin was completely removed in GK-101E group it may be concluded that the use of GK-101E seemed more advantageous than the use of excavator or low speed engine.