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Integrated Waste Management and Recycling for ELV in Japan
( Ken-ichi Sasaki ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 ISSE 초록집 Vol.2019 No.-
In Japan, the Law for the Recycling of End-of-Life Vehicles was enacted in 2002 and was enforced in full scale in 2005. This law greatly improved environmental conditions by obliging stakeholders, especially automobile manufacturers, to carry out appropriate roles. Specifically, the number of illegal dumping and improper storage nationwide has decreased to less than 5% before the enforcement of the law, and the recycling rate including heat utilization has been continuously exceeding 95% in recent several years. Moreover, the latest report shows the recycling rate of shredder residue is 98.2% and that of air bag is 94% in 2017. This time, we the DOWA group, as Japan's largest private enterprise in the field of waste management/recycling, review and present the followings: - Reasons and factors why the system prescribed by the law in Japan was steadily taken root - Effectiveness of WtE and metal recycling using shredder residue as a raw material - Our recent recycling efforts for hybrid/electric vehicles
Testing the Copernican Principle with the kSZ Effect
유철문,Tomohiro Kai,Ken-ichi Nakao,Misao Sasaki 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.57 No.31
The kinematic Sunyaev-Zel’dovich (kSZ) effect in a Lemˆıtre-Tolman-Bondi (LTB) universe is discussed. We use the LTB universe model whose distance redshift relation coincides with the concordance ∧CDM model. The physical degrees of freedom on the last scattering surface (LSS) are fixed by using Gamow’s criterion and other additional convenient conditions. We simulate the kSZ effect by solving the null geodesic equations numerically. The observational results with adiabatic inhomogeneities on the LSS seem to be difficult to explain. This difficulty would be resolved by introducing an inhomogeneity of the matter-to-photon ratio on the LSS.
Mechanical Analysis of Pion Capture Superconducting Solenoid System for COMET Experiment at J-PARC
Iio, Masami,Yoshida, Makoto,Ye Yang,Taekyung Ki,Okamura, Takahiro,Sasaki, Ken-ichi,Makida, Yasuhiro,Ogitsu, Toru,Mihara, Satoshi,Nakamoto, Tatsushi,Sugano, Michinaka,Terashima, Akio,Kawamata, Hiroshi IEEE 2017 IEEE transactions on applied superconductivity Vol.27 No.4
<P>KEK is currently constructing a long series of superconducting solenoid beamline for the COMET Phase-I experiment at the Hadron facility of J-PARC. The magnet system consists of a 5-T pion capture solenoid, a curved muon transport solenoid, and a large bore detector solenoid. The pion capture solenoid system consists of a large cold mass including four coils with an inner diameter of 1340 mm and a small cold mass including six small coils with an inner diameter of 500 mm. The peak magnetic field on the conductor reaches to 5.4 T at an operation current of 2700 A. This paper presents the design and structural details of a magnet, radiation-resistant coil, cold mass and vacuum vessel, apart from the results of the electromagnetic analysis in two-dimensional (2-D) and 3-D.</P>