Chiba Institute of Technology

About: Chiba Institute of Technology is a education organization based out in Narashino, Japan. It is known for research contribution in the topics: RNA & Magnet. The organization has 2663 authors who have published 4999 publications receiving 56870 citations. The organization is also known as: Chiba kōgyō daigaku & Kōa Institute of Technology.

Replacement and late formation of atmospheric N2 on undifferentiated Titan by impacts

Abstract: The origin of Titan’s massive nitrogen atmosphere is largely unknown. Laser-gun experiments and numerical calculations suggest that the nitrogen could have been generated by conversion from ammonia during the period of Late Heavy Bombardment.

Effect of Substitutional Monovalent and Divalent Metal Ions on Mechanical Properties of β‐Tricalcium Phosphate

Abstract: β-tricalcium phosphate (β-TCP) powder doped with monovalent or divalent metal ions was hot pressed at 1100°C, and the effect of substitutional monovalent and divalent metal ions on mechanical properties of β-TCP was investigated The sinterability of β-TCP would be enhanced by the substitution of monovalent and divalent metal ions for β-TCP Sintered β-TCP doped with 76 mol% of Mg2+ ion showed a bending strength of 160 MPa It was found that the substituition of Mg2+ ion up to 96 mol% and a small amount of monovalent metal ions for β-TCP is effective to improve the mechanical strength of β-TCP

Realtime ZMP compensation for biped walking robot using adaptive inertia force control

Abstract: A method of stabilizing the biped locomotion in real-time is necessary to achieve biped locomotion that is stable and practical. We propose a new walk stabilization technique. First, we define the ZMP stability index. The proposed method compensate ZMP in real-time to control of inertia force and adjust feedback parameters according to the stability index. This results in altering the speed of walk instead of the walk pattern. As a result, we can compensate ZMP without changing the walking pattern and achieve both of the robustness against disturbances and high responsiveness for ZMP error correction. In this paper, after describing the proposed real-tune ZMP compensation method, the validity of the proposed method is tested using humanoid robot named 'morph3' that is created in our laboratory. Verification experiments, including simulation are performed and their results prove the validity of the proposed method.

Fabrication of structure-controlled hydroxyapatite/zirconia composite

Abstract: The structure-controlled hydroxyapatite/zirconia (HAp/ZrO 2 ) composites were fabricated. At first, cylindrical hydroxyapatite (HAp) samples were prepared by the extrusion process, and then the extruded HAp cylindrical samples were coated with 3 mol% of Y 2 O 3 partially stabilized ZrO 2 slurry, dried and aligned unidirectionally to form a composite bulk. The volume fraction of ZrO 2 in the HAp/ZrO 2 composite was estimated to be about 23 vol%. Bulk density and bending strength of the composites increased with sintering temperature. Fracture energy of HAp/ZrO 2 composite sintered at 1350 °C was approximately 1.6 times higher than that of monolithic HAp. Although the bending strength of HAp/ZrO 2 composite prepared in this study was relatively low, it exhibited high fracture energy than HAp monolithic and a non-brittle fracture behavior was obtained without using fiber as the reinforcement.