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Preparation of Intermetallic Compound of Ternary Al-B-C System by Mechanical Alloying
Takahashi Teruo,Yamashita Michiru,Yamada Kazutoshi,Kohzuki Hidenori 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
Metallic compound of ternary Al-B-C system was prepared by mechanical alloying (MA) using Al, boron and graphite powders as starting materials. MA was carried out using Spex 8000 mixer/mill for 50 hours in an argon atmosphere without process control reagent such as methyl alcohol. The MA powders obtained were heat-treated in vacuum at the temperature of 873 and 1273 K for 5 hour. Pure ternary Al-B-C compound was obtained in the chemical content of Al:B:C=55:27:18. The ternary compound obtained in this study has a new phase whose crystal structure is not identified yet.
High-Temperature Oxidation of Ti Containing Stainless Steel in O2-N2 Atmosphere
( Hidenori Onishi ),( Isao Saeki ),( Ryusaburo Furuichi ),( Toru Okayama ),( Kenko Hanamatsu ),( Tamaki Shibayama ),( Heishichiro Takahashi ),( Shinichi Kikkawa ) 한국부식방식학회 2004 Corrosion Science and Technology Vol.3 No.4
TORANOMON HILLS - Super High-Rise Building on Urban Highway -
Hitomi, Yasuyoshi,Takahashi, Hiroshi,Karasaki, Hidenori Council on Tall Building and Urban Habitat Korea 2014 International journal of high-rise buildings Vol.3 No.3
TORANOMON HILLS is the main building of a large-scale re-development project located in the center of Tokyo. This high-rise building has a height of 247 m and 52 floors above ground, 5 floors below ground, and $62m{\times}80m$ in plan. It is used as hotel, residential facilities, offices, shops and conference facilities. The super structure is mainly a rigid steel frame with response-control devices, using concrete-filled steel tube columns. The underground section is a mixed structure composed of steel, steel-reinforced concrete and reinforced concrete framings. The piled-raft foundation type is used. The remarkable feature of this high-rise building is that the motorway runs through the basements of the building, which makes it stand just above the motorway. This condition is an important factor of the building design. The plan shape is designed to fit along the curve of the motorway. Special columns at the corners are required to avoid placing columns in the motorway. This special column is a single inclined column in the lower floors that branches into two columns in the mid-floors to suit the column location in the upper floors. The cast steel joint is used for the branching point of each special column to securely transfer the stress.
Natural History of Chronic Intestinal Pseudo-obstruction and Need for Palliative Care
Kosuke Tanaka,Hidenori Ohkubo,Atsushi Yamamoto,Kota Takahashi,Yuki Kasai,Anna Ozaki,Michihiro Iwaki,Takashi Kobayashi,Tsutomu Yoshihara,Noboru Misawa,Akiko Fuyuki,Shingo Kato,Takuma Higurashi,Kunihiro 대한소화기 기능성질환∙운동학회 2023 Journal of Neurogastroenterology and Motility (JNM Vol.29 No.3
Background/AimsNatural history of chronic intestinal pseudo-obstruction (CIPO), a rare disease characterized by episodes of non-mechanical obstruction, is unclear in adults. This study evaluates the clinical course of CIPO and palliative care needs of patients. MethodsFrom October 2010 to September 2021, 74 patients who underwent cine MRI and had a definitive diagnosis of CIPO were prospectively included. We investigated disease etiology and outcomes, age at onset, nutritional status at consultation (body mass index and serum albumin), hydrogen breath test results, and total parenteral nutrition (TPN) during the disease course. ResultsForty-seven patients (64%) were women, with a mean age of 44 years at onset and 49 years at diagnosis. Primary CIPO was observed in 48 patients (65%). Secondary CIPO was observed in 26 cases (35%), of whom 18 (69%) had scleroderma. The mean body mass index, serum albumin level, and hydrogen breath test positivity rate were 17 kg/m2, 3.8 mg/dL, and 60%, respectively. TPN and invasive decompression therapy were required by 23 (31%) and 18 (24%) patients, respectively. Intestinal sterilization was performed in 51 (69%) patients and was effective in 33 (65%); of these, 28 (85%) were taking metronidazole. Seven (9%) patients used opioids. There were 9 deaths (12%), including 5 (56%) from infection and 2 (22%) from suicide. Of the deaths, 6 (67%) and 4 (44%) underwent TPN management and decompression therapy, respectively. Fifty-one patients (69%) wanted palliative care. ConclusionCIPO is a rare, severe, and under-recognized disease. Standardization of treatment strategies, including palliative care and psychiatric interventions, is desired.
( Eiji Yamada ),( Hidenori Ohkubo ),( Takuma Higurashi ),( Eiji Sakai ),( Hiroki Endo ),( Hirokazu Takahashi ),( Eri Uchida ),( Emi Tanida ),( Nobuyoshi Izumi ),( Akira Kanesaki ),( Yasuo Hata ),( Tet The Editorial Office of Gut and Liver 2013 Gut and Liver Vol.7 No.5
Background/Aims: Left-sided diverticulitis is increasing in Japan, and many studies report that left-sided diverticulitis is more likely to be severe. Therefore, it is important to identify the features and risk factors for left-sided diverticulitis. We hypothesized that left-sided diverticulitis in Japan is related to obesity and conducted a study of the features and risk factors for this disorder in Japan. Methods: Right-sided di-verticulitis and left-sided diverticulitis patients (total of 215) were compared with respect to background, particularly obesity-related factors to identify risk factors for diverticulitis. Results: There were 166 (77.2%) right-sided diverticulitis patients and 49 (22.8%) left-sided diverticulitis patients. The proportions of obese patients (body mass index ≥25 kg/m2, p=0.0349), viscerally obese patients (visceral fat area ≥100 cm2, p=0.0019), patients of mean age (p=0.0003), and el-derly patients (age ≥65 years, p=0.0177) were significantly higher in the left-sided-diverticulitis group than in the right-sided-diverticulitis group. The proportion of viscerally obese patients was significantly higher in the left-sided-diverticulitis group than in the left-sided-diverticulosis group (p=0.0390). Conclusions: This study showed that obesity, particularly visceral obesity, was a risk factor for left-sided diverticulitis in Japan. (Gut Liver 2013;7:532-538)
Numerical simulation of ion extraction from a negative hydrogen ion source
shinsuke Nishigaito,Alexander Mendenilla,Hidenori Takahashi,Motoi Wada,Toshiro Kasuya 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
A simulation code is developed to calculate trajectories of negative hydrogen ions (H.) extracted from a negative ion source equipped with a magnetic filter. The field due to a magnetic filter bends trajectories of electrons extracted with H. causing the formation of an electrostatic field produced by the space charge to have a component perpendicular to the beam extraction axis. By Assuming the intensity distribution of the magnetic filter field to be approximated by a Gauss function of a proper width, trajectories of electrons and H. are computed by the developed code. Calculated trajectories of electrons and H. in the beam extraction regions are shown and discussed together with their effect upon the final H. beam transport.
Iriyama, Aya,Fujiki, Ryoji,Inoue, Yuji,Takahashi, Hidenori,Tamaki, Yasuhiro,Takezawa, Shinichiro,Takeyama, Kenichi,Jang, Woo-Dong,Kato, Shigeaki,Yanagi, Yasuo American Society for Biochemistry and Molecular Bi 2008 The Journal of biological chemistry Vol.283 No.18
<P>Lipofuscin contains fluorophores, which represent a biomarker for cellular aging. Although it remains unsubstantiated clinically, experimental results support that the accumulation of lipofuscin is related to an increased risk of choroidal neovascularization due to age-related macular degeneration, a leading cause of legal blindness. Here, we report that a major lipofuscin component, A2E, activates the retinoic acid receptor (RAR). In vitro experiments using luciferase reporter assay, competitional binding assay, analysis of target genes, and chromatin immunoprecipitation (ChIP) assay strongly suggest that A2E is a bona fide ligand for RAR and induces sustained activation of RAR target genes. A2E-induced vascular endothelial growth factor (VEGF) expression in a human retinal pigment epithelial cell line (ARPE-19) and RAR antagonist blocked the up-regulation of VEGF. The conditioned medium of A2E-treated ARPE-19 cells induced tube formation in human umbilical vascular endothelial cells, which was blocked by the RAR antagonist and anti-VEGF antibody. These results suggest that A2E accumulation results in the phenotypic alteration of retinal pigment epithelial cells, predisposing the environment to choroidal neovascularization development. This is mediated through the agonistic function of A2E, at least in part. The results of this study provide a novel potential therapeutic target for this incurable condition.</P>
miniTAO/ANIR Paα SURVEY OF LOCAL LIRGs
Tateuchi, Ken,Motohara, Kentaro,Konishi, Masahiro,Takahashi, Hidenori,Kato, Natsuko,Uchimoto, Yuka K.,Toshikawa, Koji,Ohsawa, Ryou,Kitagawa, Yutaro,Yoshii, Yuzuru,Doi, Mamoru,Kohno, Kotaro,Kawara, Kim The Korean Astronomical Society 2012 天文學論叢 Vol.27 No.4
ANIR (Atacama Near InfraRed camera) is a near infrared camera for the University of Tokyo Atacama 1m telescope, installed at the summit of Co. Chajnantor (5,640 m altitude) in northern Chile. The high altitude and extremely low water vapor (PWV = 0.5 mm) of the site enable us to perform observation of hydrogen $Pa{\alpha}$ emission line at $1.8751{\mu}m$. Since its first light observation in June 2009, we have been carrying out a $Pa{\alpha}$ narrow-band imaging survey of nearby luminous infrared galaxies (LIRGs), and have obtained $Pa{\alpha}$ for 38 nearby LIRGs listed in AKARI/FIS-PSC at the velocity of recession between 2,800 km/s and 8,100 km/s. LIRGs are affected by a large amount of dust extinction ($A_V$~ 3 mag), produced by their active star formation activities. Because $Pa{\alpha}$ is the strongest hydrogen recombination line in the infrared wavelength ranges, it is a good and direct tracer of dust-enshrouded star forming regions, and enables us to probe the star formation activities in LIRGs. We find that LIRGs have two star-forming modes. The origin of the two modes probably come from differences between merging stage and/or star-forming process.
Takasawa Ken,Asada Ken,Kaneko Syuzo,Shiraishi Kouya,Machino Hidenori,Takahashi Satoshi,Shinkai Norio,Kouno Nobuji,Kobayashi Kazuma,Komatsu Masaaki,Mizuno Takaaki,Okubo Yu,Mukai Masami,Yoshida Tatsuya 생화학분자생물학회 2024 Experimental and molecular medicine Vol.56 No.-
DNA methylation is an epigenetic modification that results in dynamic changes during ontogenesis and cell differentiation. DNA methylation patterns regulate gene expression and have been widely researched. While tools for DNA methylation analysis have been developed, most of them have focused on intergroup comparative analysis within a dataset; therefore, it is difficult to conduct cross-dataset studies, such as rare disease studies or cross-institutional studies. This study describes a novel method for DNA methylation analysis, namely, methPLIER, which enables interdataset comparative analyses. methPLIER combines Pathway Level Information Extractor (PLIER), which is a non-negative matrix factorization (NMF) method, with regularization by a knowledge matrix and transfer learning. methPLIER can be used to perform intersample and interdataset comparative analysis based on latent feature matrices, which are obtained via matrix factorization of large-scale data, and factor-loading matrices, which are obtained through matrix factorization of the data to be analyzed. We used methPLIER to analyze a lung cancer dataset and confirmed that the data decomposition reflected sample characteristics for recurrence-free survival. Moreover, methPLIER can analyze data obtained via different preprocessing methods, thereby reducing distributional bias among datasets due to preprocessing. Furthermore, methPLIER can be employed for comparative analyses of methylation data obtained from different platforms, thereby reducing bias in data distribution due to platform differences. methPLIER is expected to facilitate cross-sectional DNA methylation data analysis and enhance DNA methylation data resources.