[en] A method is described of manufacturing a thin sheet of Be or Be alloys which comprises depositing beryllium or an alloy thereof on a substrate bearing a prescribed shape, in vacuum and separating the deposited thin sheet of beryllium from the substrate. (U.S.)

[en] We report measurements of partial rate asymmetries in charge conjugate modes using two-body B decays with flavor-specific final states at the Belle experiment. A time-integrated analysis is applied on data samples of 31-85 million BB-bar pairs. All asymmetries are null consistent within errors

No abstract available

[en] The thermal conductivity of P-doped Si was investigated in the concentration range 2.5x10¹⁴ to 10¹⁸cm^-3. It is shown that, in the low concentration region, the phonon scattering by isolated donors is weak and a theory can fairly explain the experimental data, while in the concentration region higher to 4.7x10¹⁷cm^-3, the thermal resistance becomes larger than that predicted by the theory

No abstract available

[en] In 1993, at the Superconductivity Research Laboratory (SRL), International Superconductivity Technology Centre (ISTEC), in Tokyo, continuous growth of large single crystals of YBa₂Cu₃O_7-x (Y123) was achieved by the application of a modified Czochralski method. This paper presents the numerical computations of the flow, thermal and Y concentration fields in the Ba-Cu-O melt for Y123 single crystal growth by this modified method. The finite volume method was used to calculate the fluid flow, heat transfer and yttrium distribution in the melt with staggered numerical grid. The flow in the melt was modelled as an incompressible Newtonian and Boussinesque fluid. Calculations are presented for a combined flow regime of buoyancy-driven natural convection and crystal-rotation-driven forced convection

[en] A method is described for treating radioactive organic wastes containing anionic exchange resins. The method comprises decomposing the wastes by oxidizing treatment with at least 2 gr/hour of hydrogen peroxide per gr of waste of temperature below 100⁰C. with a catalyst system comprising (a) salts containing ferrous or ferric ions at a concentration of 0.01 to 0.05 moles per liter and (b) an organic cation exchange resin in an amount of at least 1% by weight on the organic solid wastes to be decomposed

[en] The diffractive leptoproductions of heavy vector mesons J/Ψ and Ψ' off a nucleon are studied with perturbative QCD, focusing on effects of the Fermi motion due to relative transverse momentum k_τ between c and c-bar inside the vector meson. Those effects are calculated under the constraint to ensure the S-wave cc-bar states in the vector meson light-cone wave functions. We find that proper treatment of that constraint moderates the strong suppression of the diffractive production cross sections due to the previous improper one, demonstrating key roles of the Fermi-motion effects when confronting with experimenting data of the Ψ' production as well as J/Ψ production from HERA

[en] With regard to dissolution of particles in the respiratory tract after inhalation, the International Commission on Radiological Protection (ICRP) has classified all radionuclides into only three types according to the chemical form of compounds, and default values of absorption parameters are proposed for each type. However, it is just a simplification to estimate doses for practical use, and there is a possibility of unfitness in such an assortment. A code has been developed to reproduce the ICRP's dose coefficients for ²³⁹Pu, which is one of the most important elements for occupational exposure. By using this code, the respective absorption parameters were modified, and the effect owing to these changes evaluated. It was shown consequently that changes of absorption parameters do not greatly influence the effective doses of ²³⁹Pu for workers. (author)

[en] The radiation dose due to internal exposures from ²³⁹Pu is mainly estimated by measuring actual urinary or faecal excretion of activity and comparing those values with the standard excretion rates calculated from the models of the International Commission on Radiological Protection (ICRP). Recently, on the other hand, uncertainties in the ICRP's models and parameters are under consideration because of the paucity of human data. In addition, there is a possibility of variation between individuals. A code has been developed to reproduce the ICRP's dose coefficients and excretion rates for ²³⁹Pu, which is one of the most important elements for occupational exposure. By using this code, the respective transfer rates for the ICRP Publication 67 biokinetic model were modified, and the effect owing to these changes on present hazard assessment was investigated. As a result, it was shown that dose estimates for workers exposed to ²³⁹Pu were not very sensitive to changes in these transfer rates. (author)