[en] The data on J/φ → γK⁺K^- from the BES (Beijing spectrometer) experiment at the BEPC (Beijing electron positron collider) have been analyzed. The formalism and the technique of the moment analysis method for the spin-parity analysis of J/φ → γK⁺K^- are presented. Here, we study a resonance in the 1.5 GeV region identified as f'₂(1525). We find that the spin-parity of f'₂(1525) can be effectively determined by our moment analysis and is 2⁺⁺. The resulting branching ratio B(J/φ → γf'₂(1525))B(f'₂(1525) → K⁺K^-) is (1.5±0.3±0.3)x10^-4. (author)

[en] The physical properties of nuclear fission products in a reactor fuel provide us with an information about the nuclear fuel state. The nuclear fuel state has been analyzed by using the measured radioactivity data of I-131, I-133 and I-135 isotopes in the reactor coolant. The fuel defect rate, exposed tramp uranium level and primary coolant purification rate have been obtained by analytical method. These results have been evaluated with the results of graphical method. (Author)

[en] The spent fuel rod extracting system is being developed in KAERI to deal with problems associated with utilization of storage pools at nuclear power plants. This system consists of an equipment system for extracting rods from spent fuel assemblies, a machine controller, and a supervisory controller. The performance of extraction system has been investigated through a series of experiments. Even though the system is designed to automatically perform sequential procedures, several problems have been found such as the gripper stucking to fuel rod caused by misaligned positioning and the socket jamming of impact wrench into the nut, etc. Up to this end the graphical model of the rod extracting system has been made so that possible sequences of operations including error detection and recovery actions are verified by using a graphic simulation before real operations. For the implementation, IGRIP is being used as a multifunctional tool for developing the rod extraction system. IGRIP is not only an excellent visualization tool, but it also highlights modeling virtual machine. (author). 6 refs., 1 tab., 6 figs

[en] In conclusion, we demonstrated that cytochrome P450 could be electrochemically activated without a cofactor or a mediator. The direct electron transfer was possible between the electrode and CYP2B4 with an aid of MPA. CYP2B4- modified electrodes were used to detect dissolved NO.

[en] In order to repair sewages, it is required to dig out the damaged sewages. But, this kind of repair work is not effective since it causes serious traffic jams and takes too much time and cost. To solve this problems, another method, which send workers or special devices into the sewages for repair work, has been used. This method gets rid of the necessity of digging out the sewages. In case of huge sewages, whose diameter are greater than 800 mm, human workers can get into the sewages and carry out repair works, but it is probable that the work can generate toxic gases. In addition, the human mistakes sometimes lead to severe disasters. For sewages with small diameters, it is difficult for human workers to go inside, so mobile robot has been used. To enhance the work condition, it is necessary to develope a device that can repair the damaged part whose conditions were inspected by sewages inspection/repair robots. For this reason, a packer was developed. The disadvantage of the previous packer was low work efficiency due to low surface contact because the previous packer inflated its center part to stick to the sewages. To increase the efficiency, V-shaped wrinkle tube was attached to the newly-developed packer. So while injecting air, the surface of the packer expands uniformly. This increases the surface contact with the sewages, which means more area can be repaired in less time. Also a camera was attached to the packer so that one can check the sewages conditions after repair work is finished. Also inspection system is connected to the control room outside the sewages. In conclusion, with the advantages mentioned above, the newly-developed packer will be very useful for sewages repair work

[en] The existing cell was an air atmosphere hot cell, but an argon compartment was installed to improve some hot cells to argon atmosphere. In an argon atmosphere cell, an electrolytic reduction process device and a remote handling device are installed to perform process operation and maintenance. Process equipment and cell equipment installed in the argon atmosphere cell should be operated and maintained remotely and remotely operated equipment handling it should be remotely maintained. The maintainability of the MSM, a remote handling device installed in the hot cell, was examined and verified. In order to operate and maintain the process equipment installed in the hot cell, the remote handling device must be able to maintain its integrity. Therefore, a maintenance procedure simulating the faults of MSM was established and maintenance was performed according to the scenario.

[en] Poly(methyl methacrylate) (PMMA) supports and amine additives were investigated to adsorb CO₂. PMMA supports were fabricated by using different ratio of pore forming agents (porogen) to control the BET specific surface area, pore volume and distribution. Toluene and xylene are used for porogens. Supported amine sorbents were prepared by wet impregnation of tetraethylenepentamine (TEPA) on PMMA supports. So we could identify the effect of the pore structure of supports and the quantity of impregnated TEPA on the adsorption capacity. The increased amount of toluene as pore foaming agent resulted in the decreased average pore diameter and the increased BET surface area. Polymer supports with huge different pore distribution could be fabricated by controlling the ratio of porogen. After impregnation, the support with micropore structure is supposed the pore blocking and filling effect so that it has low CO₂ capacity and kinetics due to the difficulty of diffusing. Macropore structure indicates fast adsorption capacity and low influence of amine loading. In case of support with mesopore, it has high performance of adsorption capacity and kinetics. So high surface area and meso-/macro- pore structure is suitable for CO₂ capture

[en] We report the effect of the outgassed moisture depending on main roll temperature from polymer substrate on the electrical and optical properties of indium tin oxide (ITO) films prepared with roll-to-roll sputtering for use as transparent electrodes. The ITO films deposited with a high main roll temperature of 80 °C were found to exhibit an amorphous structure and the post-annealing process did not improve their electrical conductivity or optical transmittance. After the outgassing process was performed 6 times in the roll-to-roll sputtering chamber, the optimized sheet resistance of the ITO thin film was improved from 95 Ω/□ to 78 Ω/□. We found that the structural and electrical properties of the ITO films are strongly dependent on the outgassed moisture during deposition. - Highlights: • Fabrication of low resistance and high transmittance of indium tin oxide thin films • Effect of outgassing process on the thin film properties • Importance of outgassing process in roll-to-roll fabrication on polymer substrate

[en] The present study was undertaken to evaluate the effectiveness of transforaminal epidural steroid injection (TFESI) with using a preganglionic approach for treating lumbar radiculopathy when the nerve root compression was located at the level of the supra-adjacent intervertebral disc. The medical records of the patients who received conventional TFESI at our department from June 2003 to May 2004 were retrospectively reviewed. TFESI was performed in a total of 13 cases at the level of the exiting nerve root, in which the nerve root compression was at the level of the supra-adjacent intervertebral disc (the conventional TFESI group). Since June 2004, we have performed TFESI with using a preganglionic approach at the level of the supra-adjacent intervertebral disc (for example, at the neural foramen of L4-5 for L5 nerve root) if the nerve root compression was at the level of the supra-adjacent intervertebral disc. Using the inclusion criteria described above, 20 of these patients were also consecutively enrolled in our study (the preganglionic TFESI group). The treatment outcome was assessed using a 5-point patient satisfaction scale and by using a VAS (visual assessment scale). A successful outcome required a patient satisfaction scale score of 3(very good) or 4 (excellent), and a reduction on the VAS score of > 50% two weeks after performing TFESI. Logistic regression analysis was also performed. Of the 13 patients in the conventional TFESI group, nine showed satisfactory improvement two weeks after TFESI (69.2%). However, in the preganglionic TFESI group, 18 of the 20 patients (90%) showed satisfactory improvement, The difference between the two approaches in terms of TFESI effectiveness was of borderline significance (ρ = 0.056; odds ratio: 10.483). We conclude that preganglionic TFESI has the better therapeutic effect on radiculopathy caused by nerve root compression at the level of the supra-adjacent disc than does conventional TFESI, and the difference between the two treatments had borderline statistical significance

[en] PRIDE uses a remote handling device to operate the process equipment installed in the work cell. The remote handling device is equipped with a BDSM (Bridge transported Dual-arm Servo Manipulator), a crane and master-slave manipulator (MSM). This paper describes the procedures for removing and repairing a manipulator when a master-slave manipulator failure. I will describe the development of a repair tool that improves the procedure and time to repair a specific fault in the manipulator. This paper describes the development of a positioning tool that can save repair procedures, time and effort in master arm maintenance procedures. The failed master arm was repaired and the slave arm was taken out of the cell due to the mismatch of the coupling position of the master arm and the slave arm.