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Although K0.5Na0.5NbO3 (KNN) possesses large maximum polarization and relatively high breakdown strength, the large remnant polarization constrains their practical applications as energy storage materials. In this work, through multi-element doping, (K0.5−0.5xNa0.5−0.5xBix)(Nb1−xSn0.2xZn0.6xTa0.2x)O3 relaxor ferroelectrics were prepared. As the superparaelectric states (SPE) were adjusted to room temperature, orthorhombic, tetragonal, and cubic phases coexisted, accompanied by the highly dynamic polar nanoregions (PNRs). In particular, a high recoverable energy storage density of 4.5 J/cm3 and an energy storage efficiency of 83% were achieved for the x = 0.125 ceramic, with the variations less than 11% and 4%, respectively, in the wide temperature range of 20–180 °C. These results demonstrate that the multiphase PNRs in the SPE state is an effective strategy for improving the energy storage performance of KNN-based ceramics. [ABSTRACT FROM AUTHOR]

Objective To investigate the effect of different radiation doses on the accuracy of iodine quantification and CT value of virtual monochromatic image with a muti-spectral CT iodine phantom using second-generation dual-layer detector spectral CT (DLCT). Methods The second-generation DLCT scan abdominal phantom was used, which consisted of six different concentrations of iodine rods at 4, 8 and 12 g/L. The scan parameters were set at 100, 120 and 140 kVp tube voltages, and six radiation exposure sequences were scanned at each tube voltage: 5, 10, 15, 20, 25 and 30 mGy. Measure the iodine concentration value and the CT value at the single level of 50, 70 and 100 keV, and calculate the absolute error value of iodine concentration and CT value under different radiation exposure. SPSS 22.0 software single factor analysis of variance was used to compare the difference between the iodine concentration and the absolute error of CT value under different Radiation exposure, and LSD method was used to compare the two groups. Results The absolute error of CT value of 4 g/L iodine rod with 10~30 mGy scanning at 100 keV energy level was significantly higher than that of 12 g/L and 8 g/L(P＜0.05), and the absolute error of iodine concentration measurement of other iodine rods with different concentrations at different Radiation exposure had no statistical difference. Conclusions The second-generation double-layer detector spectral CT has high measurement stability for iodine concentration quantification and CT value accuracy under conditions of radiation dose greater than 5 mGy.

[Purpose/Significance] With the further development of the integration of culture and tourism in libraries, the social benefits of the cultural resources of libraries will be created, the bright spots of culture and tourism in libraries will be explored, and the characteristic reading space will be enriched, promoting the transformation and upgrading of smart libraries, and social forces to actively participate in more activities. Some preliminary results have been achieved. In the new era, libraries have been given the request and expectation to provide services for the further innovation and development in the field of culture and tourism. [Method/Process] Based on the relevant research on "The integration of culture and tourism" in China in the past two years, most of them focus on a service mode and a single activity case, and seldom from the perspective of a library's IP construction practice to summarize the development path and strategy research. Based on the earlier culture research, this paper focuses on the practice of a library's IP construction, adding the product value and activity brand influence of the library, and creating the exclusive path of the library, from the aspects of IP personification, library IP story, IP topic event marketing, travel IP service efficiency, digital IP integration, Internet celebrity IP card pulling local consumption, cross-border cooperation to activate IP culture, and practice and operation of brand IP. [Results/Conclusions] Through the library IP construction strategy, point-to-point combination, the cultural expression of the library reflects the library value of the integration of IP-enabled culture and tourism. From the position and cultural goal of the literary brigade embedded in the beginning of the IP planning of the library, the evaluation standard of the literary brigade activities at different stages, the relevance of the literary brigade of the IP application, and the team of personnel running the activities of the literary brigade of the IP, all of which need professional library organization construction and link intervention, but the library IP construction can integrate the development of culture and tourism, which is a new business area of the library. This paper mainly discusses the significance of IP construction and practical case level, but each path has not yet further reflected the impact of IP to the attractiveness of tourism evaluation mechanism. New opportunity creates new value, and the key point of a library's IP construction is not only the rational expression of cultural travel attributes, but also the emotional habits of cultural travel activities. Further research is needed to realize the value of cultural IP traffic.