[en] A theoretical method to calculate multidimensional Franck-Condon factors including Duschinsky effects is described and used to simulate the photoelectron spectra of HNO^- and DNO^- radicals. Geometry optimization and harmonic vibrational frequency calculations have been performed on the X-tilde '1A' and a-tilde '3A' states of HNO/DNO and X- '2A' state of HNO^-/DNO^-. The theoretical spectra obtained by employing B3LYP/6-311+G(2d,p) values are in excellent agreement with the observed ones. In addition, the equilibrium geometry parameters, R(NO)=0.1335±0.0005 nm, angle(HNO)=106.3 deg. ±0.5 deg., of the X-tilde '2A'' state of HNO^-/DNO^- are derived by employing an iterative Franck-Condon analysis procedure in the spectral simulation

[en] The effects of magnetic correlation on the electric properties in the multiferroic materials are studied, where the phase transition temperature of the magnetic subsystem T_m is lower than that of the electric subsystem T_e. A Heisenberg-type Hamiltonian and a transverse Ising model are employed to describe the ferromagnetic and ferroelectric subsystems, respectively. We find that the magnetic correlation can influence the electric properties above the T_m, and magnetic transverse and longitudinal correlations have opposite functions. In the curves of temperature dependence of polarization, kinks appear at T_m which is dominated by the sharp change of decreasing rate of the magnetic correlation. The kinks can be eliminated by an external magnetic field. The magnetic transverse and longitudinal correlations play contrary roles on the manipulation of polarization by the external magnetic field. - Highlights: • Both magnetic longitudinal and transverse correlations can influence the electric subsystem through magnetoelectric (ME) coupling at any temperature. • The magnetic longitudinal and transverse correlations have contrary effects in influencing the phase transition temperature of electric subsystem. • The electric phase transition temperature decrease with the ME coupling strength, while it was not so by mean-field theory. • An external field can make the influence smoother around the transition point, and can enhance the electric polarization. • Magnetic longitudinal and transverse correlations have contrary effects on the manipulation of polarization by magnetic field at temperature above the magnetic phase transition point

[en] Objective: To study the effect and mechanism of polypeptide flora Chlamys farreri (PCF) on the thymocytes damaged by ⁶⁰Co γ-rays. Methods: The cells were randomly divided into six groups: control group, ⁶⁰Co groups (2 Gy, model), ⁶⁰Co + 0.5% PCF, ⁶⁰Co + 0.25% PCF, ⁶⁰Co+ 0.125% PCF, ⁶⁰Co + 0.1% VitC. The concentration of GSH-Px, ROS, A-SAC, T-AOC and the cells viability were determined. The mitochondria membrane potential were tested. The expressions of P53, Bax and Bcl-2 proteins were examined. Results: The activities of GSH-Px, A-SAC, T-AOC in cells were enhanced, and the amounts of ROS were decreased by PCF. The expression of Bcl-2 gene was up-regulated, and down-regulated for the expression of P53 and Bax. All observed indexes of the PCF groups were significantly different compared with model group (P< 0.05). Conclusions: PCF has the protective effects on damages of thymocytes caused by ⁶⁰Co irradiation. The mechanisms might be related to inhibiting of lymphocyte apoptosis and enhancing the activities of lymphocytes. (authors)

[en] The potential energy surfaces are calculated for neutron-deficient At isotopes from A = 190 to 207 in an axially deformed relativistic mean-field approach, using a quadratic constraint scheme for the first time. We find several minima in the potential energy surface for each nucleus, shape-coexistence, and quadratic deform are discussed.

[en] A LHCD system was developed on HL-2A, containing a Passive-Active Multijunction (PAM) antenna. The antenna was tested via the measurement components specially designed before it was installed on HL-2A. This paper mainly introduces the components design and the test result. The components contain two parts. One is connecting waveguide, which was designed for connecting the grills to the coaxial-to-waveguide converter with low RF loss. The other is sheet match load, filled in the grills and matching well. The connector was designed with the software of finite element analysis then manufactured after parameter optimization and machine design. The sheet match loads were also manufactured and adjusted for good match. Using the components, the RF characteristic of the antenna was measured in low power level, with the help of a VNA and two coaxial-to-waveguide converters. The results matched the design well. This conclusion then was verified in the next high power injection experiments such as the coupling optimization, the H-mode relevant experiments and the current drive experiments. (authors)

[en] A theoretical method to calculate multidimensional Franck-Condon (FC) factors including Duschinsky effects is described and used to simulate the photoelectron spectra of HOO^- and DOO^- radicals. Geometry optimization and harmonic vibrational frequency calculations have been performed on the Xbar²A'' state of HOO/DOO and Xbar¹A' state of HOO^-/DOO^-. In addition, the equilibrium geometry parameter, R(OO)=0.1493±0.0005 nm, of the Xbar¹A' state of HOO^-/DOO^- are derived by employing an iterative Franck-Condon analysis (IFCA) procedure in the spectral simulation

[en] Highlights: • Zn-Al LDHs film was prepared on AZ91D Mg alloy by electrochemical deposition. • The Zn-Al LDHs film was uniform and dense with some small flaws and cracks. • The Zn-Al LDHs film had high adhesion and good corrosion protection to Mg alloy. - Abstract: A zinc-aluminum layered double hydroxides (Zn-Al LDHs) film was prepared on AZ91D magnesium (Mg) alloy substrate by electrochemical deposition method. The characteristics of the film were investigated by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and scanning electronic microscope (SEM). It was found that the electrodeposited film was composed of crystalline Zn-Al LDHs with nitrate intercalation. The Zn-Al LDHs film was uniform and dense though there also presented some small flaws and cracks. The cross cut tape test showed that the film adhered well to the substrate. Polarization and EIS measurements revealed that the LDHs coated Mg alloy had better corrosion resistance compared to that of the uncoated one in 3.5 wt.% NaCl solution, indicating that the Zn-Al LDHs film could effectively protect Mg alloy from corrosion

[en] Highlights: • The correlation relationships of short-term wind power forecast errors are studied. • The correlation analysis method of the multi-step forecast errors is proposed. • A strategy selecting the input variables for the error forecast models is proposed. • Several novel combined models based on error forecast correction are proposed. • The combined models have improved the short-term wind power forecasting accuracy. - Abstract: With the increasing contribution of wind power to electric power grids, accurate forecasting of short-term wind power has become particularly valuable for wind farm operators, utility operators and customers. The aim of this study is to investigate the interdependence structure of errors in short-term wind power forecasting that is crucial for building error forecast models with regression learning algorithms to correct predictions and improve final forecasting accuracy. In this paper, several novel short-term wind power combined forecasting models based on error forecast correction are proposed in the one-step ahead, continuous and discontinuous multi-step ahead forecasting modes. First, the correlation relationships of forecast errors of the autoregressive model, the persistence method and the support vector machine model in various forecasting modes have been investigated to determine whether the error forecast models can be established by regression learning algorithms. Second, according to the results of the correlation analysis, the range of input variables is defined and an efficient strategy for selecting the input variables for the error forecast models is proposed. Finally, several combined forecasting models are proposed, in which the error forecast models are based on support vector machine/extreme learning machine, and correct the short-term wind power forecast values. The data collected from a wind farm in Hebei Province, China, are selected as a case study to demonstrate the effectiveness of the proposed combined models. The simulation results show that: (1) the autocorrelation function of the one-step ahead forecast errors of support vector machine shows more significant tailing than those of the autoregressive and persistence models and the correlation relationships of the multi-step ahead forecast errors of support vector machine do significantly exist, but in the case of the autoregressive and persistence models, they do not; (2) the proposed combined models have significantly enhanced the short-term wind power forecasting accuracy in the three forecasting modes. In particular, the one-step ahead forecasting accuracies of combined models show little difference; for the continuous multi-step ahead forecasting, the improvements of the proposed combined models compared with a certain individual model increase with increasing prediction steps.

[en] A new 3.7GHz/2MW/2s LHW system was built on HL-2A tokamak, where TH2103A type klystrons were used as the high power long pulse wave sources. The magnet field distribution in central axis for the klystron was measured via a device for probe fixing. The strongest magnetic field was 176mT at the rough middle of the magnet. Each coil current separately plays the most important role in magnet field distribution at different position. The influence of No.1 power supply was strong nearby the cathode and weaker nearby the resonant cavity. The influence of No.2 power supply was strong nearby the resonant cavity and weaker nearby the output window. The influence of No.3 power supply was strong nearby the output window but much weaker at other places. The data obtained supported for klystron operation optimization. (authors)

No abstract available