[en] The radioactive ²⁶Al is an important probe for the interstellar medium of our galaxy since it is observed through the emission of 1.8 Me V gamma rays from the decay of ^26gAl produced by the proton capture on ²⁵Mg. But the production of the galactic ²⁶Al is now still not well determined partially due to the lack of knowledge of the important states in ²⁶Si which dominate the large uncertainty in the ²⁵Al(p,γ) ²⁶Si reaction rate at nova temperatures. In nova explosions, the proton capture of ²⁵Al competes with its β decay and bypasses the production of ^26g Al, since the capture product ²⁶Si decays quickly to ^26mAl instead of its ground state, without the emission of the 1.8 Me V gamma ray. But at even higher temperatures, such as in supernova explosions, ^26mAl can be excited to the higher excited states by thermal excitation and then quickly deexcite to the ground state, thereby enhancing the production of ^26gAl. The energy levels in ²⁶Si in the Gamow window corresponding to these temperatures therefore need to be well understood in order to determine the ²⁵Al(p,^gamma^{) 26}Si reaction rate, and thus the production rate of ²⁶Al in these explosive environments. Two experiments were performed to study the important states in ²⁶Si : one is the p(²⁷Si,d) ²⁶Si* reaction at the NSCL, aiming to construct the level scheme of low lying states around the proton threshold; the other experiment is a measurement of the elastic scattering of ²⁵Al+p with CRIB at RIKEN in order to obtain information on states in a broad range above the proton threshold. Details of these two experiments and their data analyses will be presented in this thesis. (Author)

[en] The experimental nuclear structure data and decay data are evaluated for the known nuclides of mass 40 (Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti). Detailed evaluated nuclear structure information is presented with the best values recommended for level energies, half-lives, γ-ray energies and intensities, decay properties (energies, intensities and placement of radiations), and other spectroscopic data. The "4"0Ca and "4"0K nuclides remain as the most extensively studied from many different reactions and decays; no excited states are known in "4"0Mg, "4"0Al, "4"0P and "4"0Ti. This work supersedes the earlier full evaluation of A=40 by J. Cameron and B. Singh (2004Ca38).

[en] Evaluated experimental data are presented for 13 known nuclides of mass 85 (Zn, Ga, Ge, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo). Since the previous 1990 evaluation of A=85, ⁸⁵Zn, ⁸⁵Ga, ⁸⁵Ge and ⁸⁵nuclides are newly added here. Excited state data for ⁸⁵Se, ⁸⁵Zr have become available from radioactive decay and in–beam γ–ray studies. New and improved high–spin data are available for ⁸⁵Br, ⁸⁵Kr, ⁸⁵Rb, ⁸⁵Y, ⁸⁵Nb and ⁸⁵Mo. New direct and precise measurement of atomic masses of ⁸⁵Ge, ⁸⁵As, ⁸⁵Se, ⁸⁵Br, ⁸⁵Rb, ⁸⁵Zr, ⁸⁵Nb and ⁸⁵Mo have greatly improved the landscape of β decay–Q values and separation energies in this mass region. In spite of extensive experimental work on the isobaric nuclei of this mass chain several deficiencies remain. No excited states are known in ⁸⁵Zn, ⁸⁵Ga, ⁸⁵As. Only a few excited state are assigned in ⁸⁵Ge from ⁸⁵Ga β– decay. From radioactivity studies, the decay schemes of ⁸⁵Zn and ⁸⁵Mo are not known, and those for ⁸⁵Ga, ⁸⁵Ge, ⁸⁵As and 10.9–s isomer of ⁸⁵Zr are incomplete. Level lifetimes are not known for excited states in ⁸⁵Se, ⁸⁵Br, ⁸⁵Nb and ⁸⁵Mo. The ⁸⁵Tc nuclide has not been detected in fragmentation experiments at GANIL, alluding to its unbound nature for proton emission. The ⁸⁵Kr, ⁸⁵Rb, ⁸⁵Sr, and ⁸⁵Y nuclides remain the most extensively studied from many different reactions and decays. The evaluation of A=85 nuclides has been done after a span of 23 years, thus includes an extensive amount of new data for almost each nuclide. This work supersedes the data for A=85 nuclides presented in earlier full NDS publication by J. Tepel in 1980Te04 and a later one published in an update mode by H. Sievers in 1991Si01

[en] High quality Bi₂Sr₂Ca₁Cu₂O_x (Bi-2212) films with thickness around 1-2 μm have been grown on (1 0 0) LaAlO₃ single crystal substrates using an electrodeposition technique, followed by a melt quench and annealing process. X-ray diffraction (XRD) measurements of the final films indicated that the films were almost pure biaxially textured Bi-2212 films. The full width at half maximum (FWHM) of omega and phi scans were about 1.7 deg. and 1.1 deg., respectively. In magnetization measurements, T_c of 79 K and J_c of 0.58 MA/cm² (4.2 K, 0 T) and 44 kA/cm² (50 K, 0 T) were observed. The mechanism of the convention of Bi-2201 phase to Bi-2212 phase during the annealing process was discussed, the length scale for the current flow in Bi-2212 film was calculated from the differential susceptibility dm/dH during re-penetration of magnetic field, and the residual stress in the films were estimated from XRD θ-2θ scans

[en] Counters and ionization chambers are applied to sensors, and microprocessor based on ARM IP is applied to center controller in the instrument. It is achieved to monitor nuclear radiation and baneful gas in an instrument. The instrument is capable of LCD displaying, menu operating and speech alarming. (authors)

[en] This paper introduces the advantages of ISOCS measurement method by efficiency calibration without a radioactive source, comparing with traditional measurement methods of environment samples. Standard environment soil sample has been measured thought ISOCS measurement method by efficiency calibration without a radioactive source. The results show that ISOCS measurement method by efficiency calibration without a radioactive source is a convenient and reliable method for environment samples. (authors)

[en] Hybrid energy systems consisting of multiple energy inputs and multiple energy outputs have been proposed to be an effective element to enable ever increasing penetration of clean energy. In order to better understand the dynamic and probabilistic behavior of hybrid energy systems, this paper proposes a model combining Fourier series and autoregressive moving average (ARMA) to characterize historical weather measurements and to generate synthetic weather (e.g., wind speed) data. In particular, Fourier series is used to characterize the seasonal trend in historical data, while ARMA is applied to capture the autocorrelation in residue time series (e.g., measurements with seasonal trends subtracted). The generated synthetic wind speed data is then utilized to perform probabilistic analysis of a particular hybrid energy system configuration, which consists of nuclear power plant, wind farm, battery storage, natural gas boiler, and chemical plant. Requirements on component ramping rate, economic and environmental impacts of hybrid energy systems, and the effects of deploying different sizes of batteries in smoothing renewable variability, are all investigated. - Highlights: • Computational model to synthesize artificial wind speed data with consistent characteristics with database. • Fourier series to capture seasonal trends in the database. • Monte Carlo simulation and probabilistic analysis of hybrid energy systems. • Investigation of the effect of battery in smoothing variability of wind power generation.

[en] Two nuclear electrical Units by 1000 MWe each of Tianwan NPP under construction employ Russian design of WWER-1000/428 type (i.e. AES-91 type), which is based on the operational WWER-1000/320 series units and their optimizations. The author describes the differences and advantages of V-428 type fuel assemblies and associated components compared with V-320 ones

No abstract available

[en] The solid solution limit of Pb_1-xSr_xTiO₃ was determined in the composition are of 0≤x≤1.0 at room temperature (RT). The phases were isolated and indexed in a tetragonal system with x<0.5 and in a cubic one with x≥0.5. The cell parameters of Pb_1-xSr_xTiO₃ continuously, but nonlinearly, change with solubility x. The intrinsic thermal expansions of the solid solution compounds Pb_1-xSr_xTiO₃ (x=0, 0.15, 0.20, 0.50, 0.90, 1.0) were obtained in the temperature are from RT to 1173 K with high-temperature X-ray powder diffraction. Negative thermal expansion coefficients of Pb_1-xSr_xTiO₃ (x=0, 0.15, 0.20) were found below the Curie points. The thermal expansions of these titanate ceramics were highly correlated with the solubility in the solid solution Pb_1-xSr_xTiO₃