http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 박규섭 ( Kyu Sup Park ) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
박규섭 ( Kyu Sup Park ),장영수 ( Young Soo Jang ),최병희 ( Byoung Hee Choi ),강병근 ( Byung Kuen Kang ),김해수 ( Hae Soo Kim ),최상호 ( Sang Ho Choi ),홍준표 ( Chun Pyo Hong ) 한국주조공학회 2012 한국주조공학회지 Vol.32 No.2
Recently, development of Al-based alloys for high mechanical performance has been an important issue in automotive industry. The present study focused on the design of a high strength Al-based alloy for rheo-diecasting. The research was based on thermodynamic calculation and experimentals to optimize the alloy compositions. Two important considerations were carried out: i) to obtain uniform slurry with fine and globular microstructures for rheo-diecasting, ii) to be strengthend by T6 heat treatment. In order to evaluate the effect of Si content on the slurry microstructure and castability, thermodynamic calculation and fluidity test were carried out. The effects of various alloying components, such as Mg, Cu and Zn, on age hardenability were also investigated. The mechanical properties of the rheo-diecasting products using the newly developed alloy are 324MPa in tensile strength, 289MPa in yield strength, and 11.2% in elongation after T6 heat treatment.
-
순차이송형 유리렌즈 성형공정에서 비구면 유리렌즈의 최적 성형조건 연구
정태성(Jung, Tae-Sung),박규섭(Park, Kyu-Sup),윤길상(Yoon, Gil-Sang) 한국산학기술학회 2011 한국산학기술학회논문지 Vol.12 No.3
By the recently developed GMP(Glass Molding Press) process, aspheric glass lenses are widely used in many optical applications such as digital cameras, optical data storages and electrical devices etc. The GMP process can economically produce complex shaped glass lenses with high precision and good repeatability. This study deals the optimization of molding conditions for aspheric glass lenses in progressive GMP process through Design Of Experiment(Taguchi method). Tree main factors for molding conditions were selected based on pressure, temperature and cooling time at 1st cooling stage. From the analysis of experiments which were preformed with 3-cavity glass mold, it was revealed that the cooling time was the most sensitive parameter for form accuracy(PV) in progressive GMP process.
-
실험적 구루병에서 백서 치아조직 및 하악골의 무기질함량에 관한 연구
박규섭,조재오 대한구강생물학회 1988 International Journal of Oral Biology Vol.12 No.1
Richets is not the deposit of mineral in the skeletal tissue and is the retardation of skeletal growth in growing animals. In the skeletal disease such as rickets, vitamin D was known the most effective element. The purpose of this study was to investigate mineral changes induced by rachitogenic diet No. 2, which was high in calcium but low in phosphorus and deficient in vitamin D upon the dental structures and mandibular bone of rats. For this study, 48 albino rats were used and divided into two groups. While 24 rats of experimental group were maintained rachitogenic diet, 24 rats of control group were maintained normal diet for experimental period. For observation, animals were killed at 7 days intervals during the 42 days period and obtained specimen of teeth and mandibular bone. After both materials were powdered, Ca content determined by atomic absorption spectrophotometer (Shimadju Co, Flame Emission Spectrophotometer : AA-640-18) and P content determined by UV-spectrophotometer (Bausch and Lomb, Spectrophotometer 21) The results were as follows : 1. The Ca content in incisor of control group rose from 19.0% of dry weight in 7 days to 19.8% in 42 days while that of experimental group fell from 18.6% in 7 days to 17.8% in 42 days. 2. The P content in incisor of control group rose from 9.8% dry weight in 7 days to 10.7% in 42 days while that of experimental group fell from 9.6% in 7 days to 8.8% in 42 days. 3. The Ca content in molar of control group rose from 19.0% of dry weight in 7 days to 19.8% in 42 days while that of experimental group fell from 18.8% in 7 days to 18.3% in 42 days. 4. The P content in molar of control group rose from 10.0% dry weight in 7 days to 10.7% in 42 days while that of experimental group fell from 9.9% in 7 days to 9.4% in 42 days. 5. The Ca content in mandibular bone of control group rose from 14.2% of dry weight in 7 days to 15.0% in 42 days while that of experimental group fell from 14.0% in 7 days to 11.5% in 42 days. 6. The P content in mandibular bone of control group rose from 7.5% of dry weight in 7 days to 8.7% in 42 days while that of experimental group 7.4% in 7 days to 6.2% in 42 days.
ScienceON
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
