[en] Through boson expansion and the modified Jancovici-Schiff substitution a 1-to-1 correspondence between fermion collective pair space and the interacting boson space is obtained. The boson mappings of fermion operators are uniquely determined and the IBM Hamiltonian takes a non-Hermitian form. The calculation of fermion matrix elements and spurious problem are also discussed

[en] Radical polymers are an emerging class of non-conjugated, charge-conducting macromolecules that are capable of transporting charge through localized oxidation–reduction (redox) reactions that occur at the stable radical groups present as the pendant groups of the macromolecular chains. The chemical nature and oxidation state of these pendant radical groups are critical to the charge transporting abilities of radical polymers in the solid state. To date, however, the control of this chemistry has been limited to external oxidizing agents, and the concept of intramolecular dopants has not been explored fully. To this end, we have synthesized poly(2,2,6,6-tetramethylpiperidinyloxy methacrylate)-co-poly(vinylsulfonic acid sodium salt) (PTMA-co-PVS). Then, electron paramagnetic resonance spectroscopy and attenuated total reflectance-Fourier transform infrared spectroscopy are implemented to evaluate the exact chemical nature of the pendant groups as a function of the PVS intramolecular dopants and exposure of the materials to external oxidation reactions. We correlate these changes in pendant group chemistry to charge transport ability, and we establish that the inclusion of a moderate amount of PVS dopants can improve the solid-state hole mobility of the material. Conversely, a large amount of sulfonic acidic dopants can be detrimental to the transport of the polymer relative to the homopolymer PTMA. Therefore, refinement of pendant group chemistry and careful addition of intramolecular dopants can enhance the solid-state transport ability of a radical polymer system. These fundamental principles, in turn, provide a vital foothold by which to optimize the solid-state charge transporting ability of current and next-generation radical polymer designs. - Highlights: • Sulfonic acid groups are copolymerized within the backbone of radical polymer chain. • Addition of the sulfonic acid groups alters the pendant group oxidation state. • Exact oxidation states are monitored with a variety of spectroscopic techniques. • Oxidation states alter the solid-state charge transport ability of radical polymers. • Optimized intramolecular doping and oxidization reaction times are established

[en] The advantages of risk management system for nuclear power plant (NPP) in daily operation and maintenance of NPP is introduced. The main purpose of the paper is discussing the approach of modeling for such a system. Also a new approach is put forward, which can make the model of the system desirable

[en] Highlights: • The NiCo_2S_4-HL nanomaterial is achieved via two-step hydrothermal approach. • The unique structures are assembled self-assembly by nanosheets. • The obtained electrode exhibits high capacitance and excellent retention. • An asymmetric supercapacitor also displays high energy density and outstanding cycling stability. • The high-performance of the device is possibly due to the introduction of HL and formation of composed nanosheets. - Abstract: The porous nanostructures have drawn considerable attention because of their abundant pore volume and unique properties that provide outstanding performance in catalysis and energy storage applications. This study proposes the growth mechanism of porous NiCo_2S_4 composited with halloysite (HL) via a self-assembly method using halloysite as a template and component. Electrochemical tests showed that the NiCo_2S_4-HL exhibited an ultrahigh specific capacitance (Csp) (589C g"−"1 at 1A g"−"1) and good cycle stability (Csp retention of 86% after 1000 cycles). The desirable capacitive performance of the NiCo_2S_4-HL can be attributed to the large specific surface area and short diffusion path for electrons and ions in the hierarchical porous structure. The superior electrochemical performances with the energy density of 35.48 W h kg"−"1 at a power density of 199.9 W kg"−"1 were achieved in an assembled aqueous asymmetric supercapacitor (ASC) device using NiCo_2S_4-HL as a positive electrode and N-doped graphene (NG) as a negative electrode. Moreover, the NiCo_2S_4-HL//NG asymmetric supercapacitor achieved outstanding cycle stability (also retained 83.2% after 1700 cycles). The high-performance of the ASC device will undoubtedly make the porous NiCo_2S_4-HL as potential electrode materials attractive in energy storage systems.

[en] Tritium is one of important nuclides in the primary loop of High-Temperature Gas-cooled Reactor. Tritium collecting device are well designed especially for HTR-10. Helium sample is introduced into this device, while tritium in the sample is collected and systematic measured. The results reveal the relationship tritium activity with power level, temperature, and etc. (author)

[en] The helium purification system of 10 MW high temperature gas-cooled reactor consists of the purification equipments and their accessories. The purification equipments include a copper oxide bed, a molecular sieve absorber, a low temperature absorbed, and etc. The gas sampling and analyzing system is consisted of the gas chromatograph, moisture probe, and infrared analyzing instrument. The moisture probe and infrared analyzing instrument both conform to the design requirement, and consecutive inspection of H₂O, CO, CO₂ can be carried out for the primary helium circuit. The gas chromatograph can also meet the design requirement, and so the intermittent sampling and analyzing of H₂, O₂, N₂, CH₄, CO and CO₂ can be carried out for the primary helium circuit. (authors)

[en] Collective state space truncation causes a difference between particle and hole representations. By taking the midshell ¹²⁰Xe as an example, the problem as well as the dependence of the difference on parameters are studied within the framework of microscopic approach based on boson expansion and the MJS substitution. The phase transition in the energy spectrum structure from vibrational mode to γ-unstable mode for Xe isotopes is also studied

[en] Advanced digital distributed computer system (termed DCS) is adopted in 10 MW High Temperature Gas-cooled test Reactor (termed HTR-10). The design rules and the contents about the Human-Computer Interface of the digital control system of HTR-10 are introduced in detail. The design is done with applying HS2000 software as the configuration platform. On the screen tableau all operations are carried out. It is shown that the Human-Computer Interface of the digital control system of HTR-10 be possessed of complete control function, friendly interface and easy operation by means of the tests and embody the advantages of the digital control system

[en] Verifications and design of the remote control on 10 MW high-temperature gas-cooled test reactor helium circulator are described. The design is based on HTR-10 full digital I and C system that applying HS2000 as the operating platform and configuration platform

[en] Short communication