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Dopant-dependence on Charge-orbital Order in Impurity Doped Layered Manganites
Yuki Yamaki,Yuichi Yamasaki,Hironori Nakao,Youichi Murakami,Yoshio Kaneko,Yoshinori Tokura 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
In this study we have investigated dopant effects on a typical charge-orbital ordered state ina single layered manganite La0.5Sr1.5MnO4 using magnetization measurement and resonant x-rayscattering technique. We have studied how the charge-orbital ordered state is affected by the 3%substitution of Cr, Fe and Ga ions for Mn ions. It is revealed that the impurity doping suppresses thelong-range charge-orbital order, in which the degree of suppression strongly depends on dopant ions,and eventually forms a phase-separated ground state between charge-orbital order and ferromagneticstates.
Genetic Quality Control of the Rat Strains at the National Bio Resource Project-Rat
Kuramoto, Takashi,Nakanishi, Satoshi,Yamasaki, Ken-ichi,Kumafuji, Kenta,Sakakibara, Yuichi,Neoda, Yuki,Takizawa, Akiko,Kaneko, Takehito,Otsuki, Mito,Hashimoto, Ryoko,Voigt, Birger,Mashimo, Tomoji,Seri Korean Society for Bioinformatics 2010 Interdisciplinary Bio Central (IBC) Vol.2 No.4
The National Bio Resource Project-Rat (NBRP-Rat) comprises the largest bank of laboratory rat (Rattus norvegicus) strains in the world. Its main focus is to develop infrastructure that will facilitate the systematic collection, preservation, and provision of rat strains. To breed effectively more than 180 rat strains in living stock, we establish the genetic control system in which a systematic set of genetic diagnoses and genetic monitoring are included. Genetic monitoring is performed by using 20 polymorphic markers. Monitoring is carried out when a living animal stock is re-established by using cryopreserved embryos or sperm or when a rat strain is first introduced to the NBRP-Rat by a depositor. Additional monitoring is then carried out on each strain every two years. Genetic diagnosis is performed largely by employing the Amp-FTA method. Protocols which detail how to perform a genetic diagnosis of 11 transgenes and 24 mutations have been made. Among the mutations, nine can be detected by simple gel electrophoresis of the PCR products, 11 by restriction enzyme treatment of the PCR products, and four by direct PCR product sequencing. Using this genetic control system, the NBRP-Rat can guarantee the genetic quality of its rat strains.
노치 장약공을 이용한 발파균열제어에 관한 수치해석적 연구
조상호 ( Sang Ho Cho ),박승환 ( Seung Hwan Park ),김광염 ( Kwang Yeom Kim ),나카무라유이치 ( Yuichi Nakamura ),카네꼬카츠히꼬 ( Katsuhiko Kaneko ) 대한화약발파공학회 2008 화약발파 Vol.26 No.1
터널 및 지하공동 폐기물 처분시설의 건설에서 여굴을 적게하고 굴착후 잔류암반의 안정성을 높이기 위하여 TBM 및 할암기 등의 기계적 굴착공법의 적용이 제안되고 있다. 그러나 기계적 굴착공법은 경비나 시공성, 현장 적용성에 있어서 많은 제약이 따르고 있다. 이러한 단점을 보안하기 위하여 고도의 정밀제어발파공법이 제안되고 있다. 특히 노치 장약 공을 이용하여 예정된 굴착면을 따라 정밀하게 파단면을 형성시키는 방법이 제안되고 있지만 아직까지 균열제어에 관련된 연구가 미흡한 실정이다. 본 연구에서는 동적 파괴과정해석코드를 이용하여 암반내 노치를 가진 발파공을 모델링하여 암반의 균열발생 메커니즘과 파괴과정을 수치해석적으로 검토하였다. Mechanical excavation techniques employing tunnel boring machines (TBM) and rock splitters have been proposed to minimize rock damage for tunnel and underground waste repository facilities. Such a mechanical excavation, however, is extremely expensive and not applicable in all cases. For these reasons, controlled blasting using notched charge holes have been suggested to achieve crack growth along specific directions and inhibit growth along other directions. This study introduces a dyanmic fracture process analysis code to simulate fracture processes of rock which has a notched charge hole.
STANDARD SPECIFICATION FOR CONCRETE STRUCTURES, -2001 “MAINTENANCE”
Toyoaki Miyagawa,Hidenori Morikawa,Nobuaki Otsuki,Ayaho Miyamoto,Kazuo Eguchi,Hidenori Hamada,Atsushi Hattori,Tetsuo Harada,Susumu Inoue,Yuichi Kaneko,Yasushi Kamihigashi,Kenji Kawai,Masaru Kawamura,Y 대한토목학회 2003 대한토목학회 학술대회 Vol.2003 No.10