Selective production of metallic carbon nanotubes

In this report, we discuss whether the optimal electric field to promote the growth of armchair- type nanotubes (metallic character) evaluated using the previous Huckel-Poisson method can be applied at the tip of a nanotube in a realistic system. Setting the cross-section of a nanotube and the external field by the sheath, we estimate an effective area at the sheath edge. Since the electric charge distribution in a nanotube caused by the external electric field was determined in our previous study, we obtained the electric field distribution out of a nanotube by solving the Poisson equation and clarified the structure of the electric field lines. By determining the effective area, we show the optimal interval of the catalyst metal, which is necessary to selectively grow the metallic nanotubes. When nanotubes grow thickly during the initial stage of growth, a strong electric field cannot be applied to the tips of the tubes. As a tube grows and the tube length increases, we found that the optimal electric field decreased. To maintain the chemical activity at the tip, the sheath electric field must be decreased. We estimated the decreasing rate of the sheath field to the tube length.Comment: 12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France

HIV感染患者における神経認知障害と灰白質体積減少

京都大学0048新制・論文博士博士(医学)乙第13372号論医博第2209号新制||医||1047(附属図書館)京都大学大学院医学研究科医学専攻(主査)教授 花川 隆, 教授 髙橋 良輔, 教授 小柳 義夫学位規則第4条第2項該当Doctor of Medical ScienceKyoto UniversityDFA

エンテロウイルス68型の疫学,抗原性および受容体結合性に関する解析

要約のみTohoku University押谷仁課

First survey of ground-dwelling ants (Hymenoptera: Formicidae) on the uninhabited Gaja-jima Island, the Ryukyu archipelago, Japan

The ground-dwelling ant fauna on the uninhabited Gaja-jima Island, the Tokara Islands, the Ryukyu archipelago, Japan was investigated, which was the first survey on ants of the island. Twenty-three ant species were found during a visit of only eight hours in daytime. Four of them were new records to the Tokara Islands. Of the four new records, the southern limit of distributions was renewed for three species. Three exotic species, Pheidole fervens, Tetramorium bicarinatum, and Tapinoma melanocephalum were recognized, which seems relatively low given that ten exotic species have been altogether recorded from the Tokara Islands. The relationship between invasion by ants and the scale of human activity is discussed

Regulation of inflammation and oncogenesis by the IRF family transcription factors

The 3rd International Symposium on Carcinogenic Spiral & International Symposium on Tumor Biology in Kanazawa, [DATE]: January 24(Thu)-25(Fri),2013, [Place]:Kanazawa Excel Hotel Tpkyu, Kanazawa, Japan, [Organizers]:Infection/Inflammation-Assisted Acceleration of the Carcinogenic Spiral and its Alteration through Vector Conversion of the Host Response to Tumors / Scientific Research on Innovative Areas, a MEXT Grant-in Aid Projec