T. Hirai

Publication List Details

Period

1982 - 2009

Number

81

Co-Authors

A bulk tungsten divertor row for the outer strike point in JET (2009)

Mertens, Ph., Altmann, H., Hirai, T., Knaup, M., Neubauer, O., Philipps, V., ...

In the frame of the ITER-like wall project, a new row of divertor tiles has been developed which consists of 96 bulk tungsten load-bearing septum replacement plates (LB-SRP). Exposed to the outer...

Development and qualification of a bulk tungsten divertor row for JET (2009)

Mertens, Ph., Altmann, H., Hirai, T., Philipps, V., Pintsuk, G., Rapp, J., ...

A bulk tungsten divertor row has been developed in the frame of the ITER-like Wall project at JET. It consists of 96 tiles grouped in 48 modules around the torus. The outer strike point is located on...

Failure study of helium-cooled tungsten divertor components tested at DEMO relevant steady-state heat loads. (2009)

Ritz, G., Hirai, T., Norajitra, P., Reiser, J., Giniyatulin, R., Makhankov, A., ...

12th Internat.Workshop on Plasma-Facing Materials and Components for Fusion Applications, Jülich, May 11-14, 2009

A tritium diagnostic and trap for JUDITH - first results in disruption simulation experiments with neutron irradiated beryllium during cyclic electron beam testing (2008)

Schmidt, A., Uytdenhouwen, Inge, Kuhnlein, W., Roedig, M., Linke, J., Hirai, T., ...

In the present study, the effect of disruptions on beryllium has been studied. Disruptions are simulated in the electron beam facility JUDITH by high energetic pulses of up to 250 MJ/m2. Under these...

Stiffness of Systemic Arteries in Patients With (2008)

T Hirai, S Sasayama, T Kawasaki, S Yagi, Myocardial Infarction

Stiffness of systemic arteries in patients with myocardial infarction. A

Ultra-Fine fibers Produced by Laser-Electrospinning (2008)

Takasaki, M, Fu, H, Nakata, K, Ohkoshi, Y, Hirai, T

We used a CO2 laser as a heat source to avoid thermodegradation in the melt-electrospinning process (termed “laser electrospinning” (LES)). Nylon 6, polypropylene, poly (ethylene terephthalate)...

Status of He-cooled divertor development for DEMO. (2008)

Norajitra, P., Giniyatulin, R., Hirai, T., Krauss, W., Kuznetsov, V., Mazul, I., ...

25th Symp.on Fusion Technology (SOFT 2008), Rostock, September 15-19, 2008

Development and testing of a bulk tungsten tile for the JET divertor (2007)

Hirai, T., Bondarchuk, E., Borovkov, A.I., Koppitz, Th., Linke, J., Mertens, Ph., ...

The ITER-like wall project has been launched to design, manufacture and test all the necessary components in view of their installation in a dedicated shutdown 2008–09. One of the R&D activities in...

R&D on full tungsten divertor and beryllium wall for JET ITER-like wall project (2007)

Hirai, T., Maier, H., Rubel, M., Mertens, Ph., Neu, R., Gauthier, E., ...

The ITER reference materials have been tested separately in tokamaks, plasma simulators, ion beams and high heat flux test beds. In order to perform a fully integrated material test JET has launched...

Tungsten and beryllium armour development for the JET ITER-like wall project (2007)

Maier, H., Hirai, T., Rubel, M., Mertens, Ph., Greuner, H., Hopf, Ch., ...

For the ITER-like wall project at JET, the present main chamber CFC tiles will be exchanged with Be tiles and in parallel a fully tungsten-clad divertor will be prepared. Three R&D programmes were...

Experience with bulk tungsten test-limiters under high heat loads: melting and melt layer propagation. (2007)

Sergienko, G., Bazylev, B., Hirai, T., Huber, A., Kreter, A., Mertens, Ph., ...

11th Internat.Workshop on Plasma-Facing Materials and Components for Fusion Applications, Greifswald, October 10-12, 2006

Damage to tungsten macro-brush targets under ELM-like heat loads. Experiments vs.numerical simulations. (2007)

Bazylev, B., Janeschitz, G., Landman, I., Pestchanyi, S., Loarte, A., Federici, G., ...

10th European Congress and Exhibition on Advanced Materials and Processes (Euromat 2007), Nürnberg, September 10-13, 2007

Functional MRI Detection of Activation in the Primary Gustatory Cortices in Humans (2005)

Ogawa, H., Wakita, M., Hasegawa, K., Kobayakawa, T., Sakai, N., Hirai, T., ...

Magnetoencephalography (MEG) has recently revealed that the transitions between the parietal operculum (Pop) and the insula (area G) and the ventral end of the central sulcus (cs) were activated with...

Enhanced external counterpulsation improved myocardial perfusion and coronary flow reserve in patients with chronic stable angina. Evaluation by13N-ammonia positron emission tomography (2001)

Masuda, D, Nohara, R, Hirai, T, Kataoka, K, Chen, L.G, Hosokawa, R, ...

Aims The mechanism by which enhanced external counterpulsation therapy exerts its beneficial effects on chronic and symptomatic stable angina is largely unknown. To clarify the mechanism of action of...

Preparation of Bismuth Titanate Films by Electron Cyclotron Resonance Plasma Sputtering-Chemical Vapor Deposition (1995)

Masumoto, H., Hirai, T.

Bismuth titanate (Bi4Ti3O12 : BIT) thin films were prepared on the Pt courted MgO(100) substrate by electron cyclotron resonance plasma sputtering-chemical vapor deposition (ECR plasma...

Preparation of Bismuth Titanate Films by Electron Cyclotron Resonance Plasma Sputtering-Chemical Vapor Deposition (1995)

Masumoto, H., Hirai, T.

Bismuth titanate (Bi4Ti3O12 : BIT) thin films were prepared on the Pt courted MgO(100) substrate by electron cyclotron resonance plasma sputtering-chemical vapor deposition (ECR plasma...

Preparation of iridium and platinum films by MOCVD and their properties (1993)

Goto, T., Vargas, R., Hirai, T.

Noble metals (Ir, Pt) films were prepared by MOCVD using metal-acetylacetonate precursors. The effects of deposition conditions on deposition rates, composition and microstructure were studied, and...

Preparation of iridium and platinum films by MOCVD and their properties (1993)

Goto, T., Vargas, R., Hirai, T.

Noble metals (Ir, Pt) films were prepared by MOCVD using metal-acetylacetonate precursors. The effects of deposition conditions on deposition rates, composition and microstructure were studied, and...

FABRICATION AND EVALUATION OF SiC/C FUNCTIONALLY GRADIENT MATERIAL (1991)

Sasaki, M., Hirai, T.

A plate-like deposit having a compositional gradient from carbon (C) to silicon carbide (SiC) (SiC/C FGM) was obtained on a graphite substrate with chemical vapour deposition (CVD) by changing the...

GAS FLOW SIMULATION OF CHEMICAL VAPOUR INFILTRATION IN A VERTICAL HOT-WALL REACTOR (1991)

Sasaki, M., Ohkubo, A., Hirai, T.

Deposition of silicon carbide (SiC) into two types of capillaries (1.5 mm dia. x 6 mm depth, 1.0 mm dia. x 4 mm depth) has been attempted by a vertical hot-wall-type chemical vapour infiltration...

FABRICATION AND EVALUATION OF SiC/C FUNCTIONALLY GRADIENT MATERIAL (1991)

Sasaki, M., Hirai, T.

A plate-like deposit having a compositional gradient from carbon (C) to silicon carbide (SiC) (SiC/C FGM) was obtained on a graphite substrate with chemical vapour deposition (CVD) by changing the...

GAS FLOW SIMULATION OF CHEMICAL VAPOUR INFILTRATION IN A VERTICAL HOT-WALL REACTOR (1991)

Sasaki, M., Ohkubo, A., Hirai, T.

Deposition of silicon carbide (SiC) into two types of capillaries (1.5 mm dia. x 6 mm depth, 1.0 mm dia. x 4 mm depth) has been attempted by a vertical hot-wall-type chemical vapour infiltration...

PREPARATION OF SUPERCONDUCTING-OXIDE FILMS BY CVD AND THEIR PROPERTIES (1989)

Yamane, H., Kurosawa, H., Hirai, T.

The superconducting oxide films of Y-Ba-Cu-O (YBCO) and Bi-Sr-Ca-Cu-O (BSCCO) systems were prepared by CVD using β-diketone metal chelates and bismuth alkoxide as starting materials....

PREPARATION OF SUPERCONDUCTING-OXIDE FILMS BY CVD AND THEIR PROPERTIES (1989)

Yamane, H., Kurosawa, H., Hirai, T.

The superconducting oxide films of Y-Ba-Cu-O (YBCO) and Bi-Sr-Ca-Cu-O (BSCCO) systems were prepared by CVD using β-diketone metal chelates and bismuth alkoxide as starting materials....

Significance of pre-infarction angina for occurrence of post-infarction angina (1988)

FUJITA, M., SASAYAMA, S., ARAIE, E., OHNO, A., YAMANISHI, K., HIRAI, T.

We evaluated the factors determining the occurrence of post-infarction angina in 41 patients who had intracoronary thrombolysis within 6 h of the onset of acute myocardial infarction. Pre-infarction...

Lectures on harmonic analysis on Lie groups and related topics (1982)

Hirai, T., Schiffmann, Gerard

Paley-Wiener type theorem for certain semi-direct product groups. / S. Ando [1]

Reproductive factors related to the risk of colorectal cancer by subsite: a case-control analysis

Yoo, K-Y, Tajima, K, Inoue, M, Takezaki, T, Hirose, K, Hamajima, N, ...

The authors hypothesized that reproductive factors of colorectal cancer, which are probably mediated by endogenous hormones, would differ according to colonic subsite. Information on reproductive...