[en] Highlights: • Predict practicable capacity by cycle life model in the battery degradation process. • Build a new RBFNN model based on cycle life model to estimate the SOC. • Evaluate the robustness of new model against varying aging levels and temperatures. • Assess the robustness of new model against varying loading profiles. • Analyze the measurement of the battery aging cycles in electric vehicles. - Abstract: Battery state-of-charge (SOC) is a key parameter of the battery management system in the electric vehicle. To predict the practicable capacity of the battery in the degradation process, the cycle life model is built based on the aging cycle tests of the 6Ah Lithium Ion battery. Combined with the cycle life model, a new Radial Basis Function Neural Network (RBFNN) model is proposed to eliminate the battery degradation’s effect on the SOC estimation accuracy of the original trained model. This proposed model is verified through the 6Ah Lithium Ion battery. First, Urban Dynamometer Driving Schedule (UDDS) and Economic Commission of Europe (ECE) cycles are experimented on the batteries under different temperatures and aging levels. Then, the robustness of the new RBFNN model against different aging levels, temperatures and loading profiles is tested with the datasets of the experiments and compared against the conventional neural network model. The simulations show that the new model can improve the accuracy of the SOC estimation effectively and has a good robustness against varying aging cycles, temperatures and loading profiles. Finally, the measurement of actual aging cycles of the battery in electric vehicles is discussed for the SOC estimation

[en] Highlights: • Nanofiltration can offer one of the approaches in optimizing membrane system. • Operation parameters especially the pressure affect nuclides’ removal efficiency. • Organic polyamide membrane shows radiation resistance. • A summary of DF and flux values can be taken as reference in designing the membrane system for LLRWs treatment. - Abstract: Membrane technology has been proved as an effective technology in the treatment of low level radioactive wastewaters (LLRWs). As ‘loose reverse osmosis’, nanofiltration can be integrated with RO and offers the high permeate flux at low pressure without obvious loss of decontamination efficiency. In the paper, three kinds of commercially available NF membrane materials were investigated by lab-scale experiment with respect to the nuclide rejection. The results demonstrate the efficient elimination. The membrane flux can be improved by the elevation of temperature and cross-flow velocity within the ranges of 20–30 °C and 0.4–1.0 m s⁻¹. The radiation resistance test demonstrates no obvious loss of flux and nuclide rejection after a long term operation in the radioactive circumstance. A brief comparison of LLRWs treatment methods shows that NF can perform the pre-treatment of RO and optimize the entire membrane system with high flux and low pressure. In the paper, decontamination factor and flux values of the tested membranes at different operation condition are summarized as the reference for membrane selection and system design

[en] Highlights: • A novel pathway of synthesizing magnetic hexacyanoferrate material was developed. • The synthesized material can offer a high capacity for sorption of cesium. • The material can offer a fast removal of cesium in kinetic performance. • The fine M-PTH particle can be easily separated from wastewater for recirculation. - Abstract: The rapid development of the nuclear power plant in China leads to increasing attention to the treatment of low-level radioactive wastewater (LLRW). One of possibilities is the application of inorganic adsorbent like potassium titanium hexacyanoferrate (PTH), which can exhibit the effective adsorption of cesium. In this paper, the PTH material was optimized by means of being loaded on magnetite substrate. The synthesized material (magnetic PTH, M-PTH), with a particle size of less than 100 nm, can offer a high capacity and favorable kinetic performance, however, without difficulties of separation from the LLRW due to its magnetic characterizations. The batch experiments demonstrate that cesium sorption isotherm of M-PTH coincide well with Langmuir model. The calculated capacity amounts to 0.517 mmol/g, approximately 1.5 times the capacity of zeolite materials. The sorption process follows the pseudo-second-order sorption model. In the initial phase the rate-controlling step is intraparticle diffusion. With the Cs accumulation on the particle surface, external diffusion performs an important role together with intraparticle diffusion

[en] During the operation and decommissioning of nuclear facilities, lots of waste radioactive ion exchange resins are produced. The resins loaded with radioactive nuclides can not be reused. These waste resins should be properly treated and disposed in order to minimize the potential danger to the environments. Cement is a best material for resin solidification due to its good physical, chemical and mechanical properties. Researches on effective cement solidification of waste resins have been carrying out. A kind of special cement (ASC) is used in radioactive spent resins solidification. It is found that the best prescription is X ASC cement + 0.5X waste resins (dry) + 0.4X water in previous researches. In order to in crease the efficiency of resins cementation, loading or resins in cementation matrix is added in present research. The strength, leaching rates of radioactive ions are studied when loading of' resins in ASC cementation matrix is raised. The results show that the strength matrix should decrease when loading of resins are added, but the strength can meet the demands for disposal when loading of resins don't excess 60%(V/V). Loading of resins don't affect leaching rates of ions in matrix. (authors)

[en] The purpose of this paper is to study the scattering of the three-cluster nucleon system with quasi-resonating-group method (QRGM) (which is a RGM with omitting the antisymmetrization with the nucleons of the doubly magic cluster) and complex-generator-coordinate technique (CGCT). As an example, the n + ¹⁹F (t + ¹⁶O) elastic scattering phase shifts and differential elastic scattering cross sections are calculated. In the elastic scattering cross section calculations, an imaginary optical potential is introduced to take account the effect of the other reaction channels. The calculated results show that the QRGM can still be used to a larger nucleon system, such as n + ¹⁹F, to get satisfactory results. It may be said that the QRGM is a feasible approximate method

[en] The features of d-d and d-³H equivalent local potentials are studied by using single channel RGM and two-channel RGM, respectively. The results show that those equivalent potentials have energy and state dependences (containing odd-even l-dependence and s-dependence), which are useful in choosing the phenomenological optical model parameters of light nuclei

[en] The reduced E2-transition probabilities between the d+α-cluster states of ⁶Li are calculated using the resonating group method. The calculated value of B(E2;E₁→E0) =21.06 fm⁴ is consistent with the experiment result of 25.1±2.0 fm⁴. It is larger than the calculated values of 12.14, 13.11, and 18.14 fm⁴ obtained with a double-well cluster model containing some p-state, and the value of 13.88 fm⁴ obtained with LCCO. The result of B(E2;E₃→E0)=9.67 fm⁴ agrees with the experimental value of 6.483±3.360 fm⁴ within the measurement uncertainty

[en] By using the d-α cluster-structure wave function and the nucleon-nucleon (N-N) force containing a soft-repulsive core central potential and a spin-orbit noncentral potential, the (1⁺, 0) ground state, (3⁺, 0) 1st excited state, (2⁺, 0) 3rd excited state, and (1⁺, 0) 5th excited state of ⁶Li are studied by phase-shift analysis and generalized eigenvalue analysis with single-channel resonating group-method (RGM). The results show that, from the phase-shift and eigenvalue analyese, the ground state of ⁶Li is mainly an l = 0 d-α cluster-structure bound state, and the 1st, 3rd, and 5th excited states of ⁶Li are mainly (1, J) = (2, 3), (2, 2), and (2, 1) cluster-structure unbound states, respectively

[en] By using the d--α cluster-structure wave function and the nucleon-nucleon (N-N) force containing a soft-repulsive core central potential and a spin-orbit noncentral potential, the (1⁺,0) ground state, (3⁺,0) 1st excited state, (2⁺,0) 3rd excited state, and (1⁺,0) 5th excited state of ⁶Li are studied by phase-shift analysis and generalized eigenvalue analysis with the single-channel resonating-group-method (RGM). The results show that, from the phase-shift and eigenvalue analyses, the ground state of ⁶Li is mainly an l = 0 d--α cluster-structure bound state, and the 1st, 3rd, and 5th excited states of ⁶Li are mainly (l,J) = (2,3), (2,2), and (2,1) unbound cluster-structure states, respectively

[en] The E2 reduced transition probabilities between the d-α cluster states of ⁶Li were calculated by the RGM in this paper. The resulting B(E2; E₁ → E₀) = 21.06 fm⁴ is consistent with the experimental value 25.1 ± 2.0 fm⁴ which is more than the calculated values of the double-well cluster model including p-state exciting and LCCO, Also, the B(E2; E₃ → E₀) = 9.67 fm⁴ coincide with the exprimental value 6.483 ± 3.360 fm⁴ within the error range