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Fabrication and Mechanical Properties of Porous Ti/HA Composites for Bone Fixation Devices
Nomura, Naoyuki,Sakamoto, Kozue,Takahashi, Katsuya,Kato, Seiji,Abe, Yasunori,Doi, Hisashi,Tsutsumi, Yusuke,Kobayashi, Masahiro,Kobayashi, Equo,Kim, Woo-Jong,Kim, Kyo-Han,Hanawa, Takao The Japan Institute of Metals 2010 MATERIALS TRANSACTIONS Vol.51 No.8
<P>Porous Ti (pTi)/hydroxylapatite (HA) composites were fabricated by an infiltration method in a vacuum and sintering. The Young’s modulus of the composites was evaluated before and after the immersion in Hanks’ solution. The strength of the composites was also evaluated by four-point bending test. The Young’s modulus of the compacts was governed by the porosity and was comparable to the human bone in the porosity range from 24 to 34%. The Young’s modulus of sintered pTi/HA composites was larger than that of pTi. The Young’s modulus of the sintered pTi/HA composites decreased after immersion in Hanks’ solution. The proof and bending strengths of the sintered pTi/HA composites were larger than those of pTi. Solid solution hardening of Ti by oxygen contributed the increase of the proof strength.</P>
Two-loop induced Majorana neutrino mass in a radiatively induced quark and lepton mass model
Nomura, Takaaki,Okada, Hiroshi American Physical Society 2016 Physical Review D Vol.94 No.9
<P>A two-loop induced radiative neutrino model is proposed as an extension of our previous work in which the first-and second-generation standard model fermion masses are generated at the one-loop level in both quark and lepton sectors. Then we discuss the current neutrino oscillation data, lepton flavor violations, muon anomalous magnetic moment, and a bosonic dark matter candidate, for both the normal and inverted neutrino mass hierarchy. Our numerical analysis shows that fewer hierarchical Yukawa coupling constants can fit the experimental data with TeV-scale dark matter.</P>
Neutrino mass with large SU(2)L multiplet fields
Nomura, Takaaki,Okada, Hiroshi American Physical Society 2017 Physical Review D Vol.96 No.9
<P>We propose an extension of the standard model introducing large SU(2)(L) multiplet fields which are quartet and septet scalars and quintet Majorana fermions. These multiplets can induce the neutrino masses via interactions with the SU(2) doublet leptons. We then find the neutrino masses are suppressed by a small vacuum expectation value of the quartet/septet and an inverse of the quintet fermion mass, relaxing the Yukawa hierarchies among the standard model fermions. We also discuss collider physics at the Large Hadron Collider, considering the production of charged particles in these multiplets, and due to the effects of violating the custodial symmetry, some specific signatures can be found. Then, we discuss the detectability of these signals.</P>
Nomura, Akihiro,Won, Hong-Hee,Khera, Amit V.,Takeuchi, Fumihiko,Ito, Kaoru,McCarthy, Shane,Emdin, Connor A.,Klarin, Derek,Natarajan, Pradeep,Zekavat, Seyedeh M.,Gupta, Namrata,Peloso, Gina M.,Borecki, Grune & Stratton 2017 Circulation research Vol.121 No.1
<P>Conclusions: Compared with noncarriers, carriers of PTV at CETP displayed higher high-density lipoprotein cholesterol, lower low-density lipoprotein cholesterol, lower triglycerides, and lower risk for CHD.</P>
Nomura, Kotohiro,Fukuda, Hiroya,Katao, Shohei,Fujiki, Michiya,Kim, Hyun Joon,Kim, Dong-Hyun,Zhang, Shu Royal Society of Chemistry 2011 Dalton transactions Vol.40 No.31
<P>Various half-sandwich titanium complexes containing iminoimidazolidide ligands, CpTiCl<SUB>2</SUB>[1,3-R<SUB>2</SUB>(CH<SUB>2</SUB>N)<SUB>2</SUB>C?N] (1a–d) [R = Ph (a), 2,6-Me<SUB>2</SUB>C<SUB>6</SUB>H<SUB>3</SUB> (b), cyclohexyl (c), <SUP><I>t</I></SUP>Bu (d)], have been employed as the catalyst precursors for ethylene polymerisation, syndiospecific styrene polymerisation, and copolymerisation of ethylene with 1-hexene in the presence of MAO cocatalyst; 1d showed the highest catalytic activity for ethylene polymerisation whereas 1b showed the highest activity for syndiospecific styrene polymerisation.</P> <P>Graphic Abstract</P><P>Effect of ligand substituents in ethylene polymerisation, syndiospecific styrene polymerisation, and ethylene/1-hexene copolymerisation using half-sandwich titanium complexes containing iminoimidazolidide ligands–MAO catalysts have been explored. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1dt10467e'> </P>
『土名對照鮮滿植物字彙』(1932)의 식물생활민속지적 의의와 『鄕藥集成方』(1433) 초부 상품과의 관계성 고찰
Nomura Michiyo 동아시아고대학회 2019 동아시아고대학 Vol.0 No.54
This article selected Domei taisho senman syokubutsu jii (土名對照鮮滿植物字彙) as analysis data to find the relationship between pre modern plant names and scientific names, the outcome of modern plant classification, as part of preparatory work to access botanical ethnographic knowledge in the pre modern era, and selected Sangpums (上品) 1∼52 of Chobu (草部) (Part of Herbs) from Hyangyak jipseongbang (鄕藥集成方) as data about pre modern plant names. The composition and ethnographic significance of Domei taisho senman syokubutsu jii were determined, and then the relationship between Tomyeong 1daejo seonman singmul jahwi and Hyangyak jipseongbang was considered. As a result, it was found that Domei taisho senman syokubutsu jii contains descriptions very relevant to life culture thanks to the author’s field survey as well as the Korean names, Chinese names, Japanese names, and scientific names of plants, and thus that it also has botanical ethnographic value. In addition, modern scientific names for Sangpums of Chobu in Hyangyak jipseongbang were identified, and the position of each of Sangpums of Chobu from Hyangyak jipseongbang under the modern classification were also identified. The present article has limitations in that its objects of analysis were limited to Sangpums of Chobu from Hyangyak jipseongbang, and thus the analysis of their contents and the contrast with Domei taisho senman syokubutsu jii ended up being within the limits. And yet, it was possible to grasp tendency even from the partial portions, and it was confirmed that the remaining portions are also worth detailed investigation. 본 연구는 전근대시기의 식물 명칭을 근대적 식물분류와 연결시킨 자료를 발굴하여 그것으로 전근대시기의 식물민속지식에 접근할 수 있게 하는 것을 목적으로 수행되었다. 이 목적에 적합한 자료로 『土名對照鮮滿植物字彙』(1932)를 선택했으며, 전근대 식물 명칭의 자료로서 『鄕藥集成方』(1433)을 선택했다. 연구를 진행하면서 『土名對照鮮滿植物字彙』는 다른 식물학 책과는 달리, 식물학적 내용뿐만 아니라 식물과 관련된 의식주와 각종 관습을 알 수 있는 단서가 되는 내용이 다수 포함되어 있는 것을 알게 되었다. 또한 저자의 무라타도 식물채집과 문헌연구만이 아니라 조선과 만주를 몇 차례에 걸쳐 방문하고 현지인을 대상으로 조사한 인물이었다. 그의 작업은 일반 사람들을 대상으로 현지에 가서 조사를 해 그 결과를 민속지로 기록하는 민속학의 연구방법과 상통한다. 그래서 이 책은 단순히 식물의 사전이라는 범주를 넘어, 저작된 당시의 생활문화를 담은 민속지적인 가치를 가지게 되었다는 것을 알 수 있었다. 『鄕藥集成方』의 관계성 분석을 통해 『鄕藥集成方』 초부 상품에 해당되는 각 식물의 근대식 학명을 알 수 있었다. 조선시대 초기의 식물 명칭이 근대의 어느 학명에 해당되는지를 밝힘으로서 전근대시기의 식물민속지식에 접근할 방도를 제시할 수 있게 되었다. 또한 근대적 분류에서 『鄕藥集成方』 초부 상품의 각 식물의 위치도 확인 할 수 있었다. 본고는 분석 대상이 『鄕藥集成方』초부 상품에 해당되는 부분에 한정되어, 내용 분석과 『土名對照鮮滿植物字彙』과의 대조가 그 범위 안에 머무른 점이 연구의 한계점이다. 그러나 그 일부분에서도 경향성을 파악할 수 있었으며 남은 부분도 상세하게 검토할 가치가 있음을 확인할 수 있었다.