| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ikeda, Yuji
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2023Compositive role of refractory element Mo in improving strength and ductility of face-centered-cubic complex concentrated alloyscitations
- 2023Interstitials in compositionally complex alloys
- 2022Effects of Cr/Ni ratio on physical properties of Cr-Mn-Fe-Co-Ni high-entropy alloyscitations
- 2022Schlieren imaging and spectroscopic approximation of the rotational–vibrational temperatures of a microwave discharge igniter with a resonating cavitycitations
- 2021Effects of cryogenic temperature on tensile and impact properties in a medium-entropy VCoNi alloycitations
- 2021Crystal structure and phase stability of Co2N : A combined first-principles and experimental studycitations
- 2021Crystal structure and phase stability of Co2N: a combined first-principles and experimental study
- 2021Chemically induced local lattice distortions versus structural phase transformations in compositionally complex alloyscitations
- 2021Structural, magnetic and catalytic properties of a new vacancy ordered perovskite type barium cobaltate BaCoO2.67citations
- 2020Correlation analysis of strongly fluctuating atomic volumes, charges, and stresses in body-centered cubic refractory high-entropy alloyscitations
- 2020Combined Al and C alloying enables mechanism-oriented design of multi-principal element alloys: Ab initio calculations and experimentscitations
- 2020Combined Al and C alloying enables mechanism-oriented design of multi-principal element alloyscitations
- 2020The University of Tokyo Atacama Observatory 6.5 m telescope: Development of the telescope and the control systemcitations
- 2020Role of magnetic ordering for the design of quinary TWIP-TRIP high entropy alloyscitations
- 2019Ultrastrong medium-entropy single-phase alloys designed via severe lattice distortioncitations
- 2019Ab initio phase stabilities and mechanical properties of multicomponent alloys: a comprehensive review for high entropy alloys and compositionally complex alloys
- 2019Invar effects in FeNiCo medium entropy alloys: From an Invar treasure map to alloy designcitations
- 2019Impact of interstitial C on phase stability and stacking-fault energy of the CrMnFeCoNi high-entropy alloycitations
- 2019Ab initio vibrational free energies including anharmonicity for multicomponent alloyscitations
- 2019Engineering atomic-level complexity in high-entropy and complex concentrated alloyscitations
- 2018Impact of chemical fluctuations on stacking fault energies of CrCoNi and CrMnFeCoNi high entropy alloys from first principlescitations
- 2017Phonon broadening in high entropy alloyscitations
Places of action
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document
The University of Tokyo Atacama Observatory 6.5 m telescope: Development of the telescope and the control system
Abstract
The University of Tokyo Atacama Observatory Project is to construct a 6.5 m infrared-optimized telescope at the summit of Co. Chajnantor (5640 m altitude) in northern Chile. The telescope optics uses a Ritchey-Chretien type layout, with an under-sized secondary mirror to reduce stray light caused by thermal emission from the telescope structure. The primary mirror is a F/1.25 lightweight borosilicate glass (Ohara E6) mirror with honeycomb structure, which is developed by Steward Observatory Richard F. Caris Mirror Lab. The telescope has two Nasmyth foci and two folded-Cassegrain foci, which can be switched by rotating a tertiary mirror. The final focal ratio is 12.2 with a field of view of 25 arcmin in diameter. The telescope mount is a tripod-disk alt-azimuth mount. Both the azimuth and elevation axes are supported by and run on hydrostatic bearings, and they are driven by friction drives with servo motors, which are controlled by the telescope control system. It also controls the hexapod mount of the secondary mirror and the pneumatic actuators of the primary mirror support to keep good image quality during the observation. An off-axis Shack-Hartmann sensor installed in each focus measures the wavefront aberration of the telescope optics, then the misalignment between the secondary and primary mirrors is corrected by adjusting the hexapod mount while other aberrations are corrected by the deformation of the primary mirror. The force distribution of the actuators for correction will be calculated by fitting the wave-front errors with a series of bending modes of the primary mirror....