Cervical vertebrae affection in calcium pyrophosphate crystal deposition disease (description of a clinical case) by E. V. Cheremushkina, M. S. Eliseev, O. V. Zhelyabina

“…It is believed that calcium pyrophosphate crystals are more often found in the knee and so-called root joints (hip and shoulder), as well as in the triangular fibro-cartilaginous complex. …”
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Quantum computation for robot posture optimization by Takuya Otani, Atsuo Takanishi, Nobuyuki Hara, Yutaka Takita, Koichi Kimura

“…Furthermore, we demonstrate that the robot’s end-effector position can be effectively represented using a 2-qubit rotation gate, where the root joint angle influences the tip joint angle, resulting in accelerated convergence during inverse kinematics optimization. …”
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