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AR based ornament design system for 3D printing
Aoki, Hiroshi,Mitanin, Jun,Kanamori, Yoshihiro,Fukui, Yukio Society for Computational Design and Engineering 2015 Journal of computational design and engineering Vol.2 No.1
In recent years, 3D printers have become popular as a means of outputting geometries designed on CAD or 3D graphics systems. However, the complex user interfaces of standard 3D software can make it difficult for ordinary consumers to design their own objects. Furthermore, models designed on 3D graphics software often have geometrical problems that make them impossible to output on a 3D printer. We propose a novel AR (augmented reality) 3D modeling system with an air-spray like interface. We also propose a new data structure (octet voxel) for representing designed models in such a way that the model is guaranteed to be a complete solid. The target shape is based on a regular polyhedron, and the octet voxel representation is suitable for designing geometrical objects having the same symmetries as the base regular polyhedron. Finally, we conducted a user test and confirmed that users can intuitively design their own ornaments in a short time with a simple user interface.
이은송,Mohammad Musharraf Uddin Bhuiyan,Hiroyuki Watanabe,Kohji Matsuoka,Yoshihiro Fujise,Hajime Ishikawa,Yutaka Fukui 대한수의학회 2009 JOURNAL OF VETERINARY SCIENCE Vol.10 No.4
In this study, we examined the feasibility of using subzonal cell injection with electrofusion for interspecies somatic cell nuclear transfer (iSCNT) to produce sei whale embryos and to improve their developmental capacity by investigating the effect of osmolarity and macromolecules in the culture medium on the in vitro developmental capacity. Hybrid embryos produced by the electrofusion of fetal whale fibroblasts with enucleated porcine oocytes were cultured in modified porcine zygote medium-3 to examine the effects of osmolarity and fetal serum on their in vitro developmental capacity. More than 66% of the whale somatic cells successfully fused with the porcine oocytes following electrofusion. A portion (60∼81%) of the iSCNT whale embryos developed to the two- to four-cell stages, but no embryos were able to reach the blastocyst stage. This developmental arrest was not overcome by increasing the osmolarity of the medium to 360 mOsm or by the addition of fetal bovine or fetal whale serum. Our results demonstrate that sei whale-porcine hybrid embryos may be produced by SCNT using subzonal injection and electrofusion. The pig oocytes partly supported the remodeling and reprogramming of the sei whale somatic cell nuclei, but they were unable to support the development of iSCNT whale embryos to the blastocyst stage.
Glutamate and GABA concentrations in the cerebellum of novel ataxic mutant Pogo mice
Young-Gil Jeong,Nam-Seob Lee,Bum-Kyeong Kim,Geun-jwa Lee,Il-Kwon Park,Ki-Hyung Kim,Yoshihiro Fukui,Kazuhiko Sawada,현병화,Sun-Kyung Kim,김철태,Seung-Hyuk Chung,Jeoung-Hee Ha 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.3
The Pogo mouse is an autosomal recessive ataxic mutant that arose spontaneously in the inbred KJR/MsKist strain derived originally from Korean wild mice. The ataxic phenotype is characterized by difficulty in maintaining posture and side to side stability, faulty coordination between limbs and trunk, and the consequent inability to walk straight. In the present study, the cerebellar concentrations of glutamate and GABA were analyzed, since glutamate is a most prevalent excitatory neurotransmitter whereas γ-aminobutyric acid (GABA) is one of the most abundant inhibitory neurotransmitters, which may be the main neurotransmitters related with the ataxia and epilepsy. The concentration of glutamate of cerebellum decreased significantly in ataxic mutant Pogo mouse compared to those of control mouse. However, GABA concentration was not decrease. These results suggested that the decrease in glutamate concentration may contribute to ataxia in mutant Pogo mouse.
Differences of Zebrin II Expression Pattern Between Normal Balb/C and Ataxic Pogo Mouse Cerebellum
이남섭(Nam-Seob Lee),김철태(Chul-Tae Kim),김기형(Ki-Hyung Kim),김선경(Sun-Kyung Kim),정승혁(Seung-Hyuk Chung),고경옥(Kyong Og Ko),Kazuhiko Sawada, Yoshihiro Fukui, 현병화(Byung-Wha Hyun),원무호(Moo-Ho Won),정영길(Young-Gil Jeon 대한해부학회 2003 Anatomy & Cell Biology Vol.36 No.6
zebrin II는 소뇌 Purkinje 세포에서 발현되는 36-kDa의 호흡효소(respiratory isoenzyme aldolase C)로 지금까지 알려진 가장 대표적인 소뇌구획표지자(cerebellar compartmentation marker)로 알려져 있다. 본 연구는 국내 최초로 발견된 선천성 운동실조 마우스인 pogo 마우스와 Balb/C 마우스 소뇌에서 zebrin II 발현양상의 차이를 확인하기 위하여 시행되었다. zebrin II 면역반응은 pogo 마우스와 Balb/C 마우스 소뇌 Purkinje 세포의 세포질과 수상돌기에서 관찰되었다. pogo 마우스와 Balb/C 마우스 소뇌 zebrin II 면역반응 Purkinje 세포들은 zebrin II에 면역반응을 보이지 않는 Purkinje 세포들과 서로 교대로 위치하여 소뇌의 앞-뒤를 연결하는 parasagittal band 형태로 관찰되었다. 소뇌 전체에 걸쳐 pogo 마우스와 Balb/C 마우스 소뇌 zebrin II 면역반응 Purkinje 세포들의 분포양상은 거의 유사하였다. 그러나, 소뇌 앞부분(anterior zone, AZ)의 lobule III에서는 pogo 마우스와 Balb/C 마우스 소뇌 zebrin II 면역반응 Purkinje 세포들의 분포양상에 차이가 관찰되었다. Balb/C 마우스 소뇌의 lobule III에서는 10~15개 정도의 zebrin II 면역반응 Purkinje 세포들이 모여 parasagittal band를 형성하지만, pogo 마우스의 경우 lobule III의 정중에 위치한 P1 band는 유사하나 P1 band의 양쪽에 위치한 P2 band의 경우 50~60개의 zebrin II 면역반응 Purkinje 세포들이 모여 parasagittal band를 형성한다. 이와 같은 lobule III의 zebrin II 면역반응 Purkinje 세포들의 분포차이는 pogo 마우스와 Balb/C 마우스의 유전적 차이에서 기원하는 것으로 생각되며 본 연구의 결과는 운동실조 pogo 마우스의 소뇌 형태적 연구의 기초적 자료로 이용될 수 있다고 생각된다. The purpose of this study is to identify the differences of zebrin II expression between ataxic pogo and normal Balb/C mouse cerebellum. Zebrin II is expressed by subsets of Purkinje cells that form an array of parasagittal bands that extend rostrocaudally throughout the cerebellar cortex, separated by similar bands of Purkinje cells that do not express zebrin II. Zebrin II immunoreactivity was localized in the perikarya of Purkinje cells, and the dendrites. Distribution of zebrin II-immunoreactive Purkinje cells were very similar pattern in pogo and Balb/C mouse cerebellum. But, in the lobule III, distribution of zebrin II expression was different between pogo and Balb/C mouse cerebellum. In lobule III of Balb/c mouse cerebellum, 10~15 zebrin II-immunoreactive Purkinje cells were observed and clustered to form a parasagittal bands. On the other hand, zebrin II expressions of lobule III in pogo mouse cerebellum showed a little different patterns. In lobule III of pogo mouse cerebellum, three bilateral zebrin IIimmunoreactive parasagittal band were observed. P1 band was almost same with lobule III of Balb/C mouse cerebellum. But, P2 bands were composed of 50~60 Purkinje cells which were immunoreactive with zebrin II. These kind of thickening in zebrin II expression of pogo mouse cerebellum may be due to the genetical difference. Furthermore, these results may provide useful information with further ataxic pogo mice cerebellum studies.