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Based on the implementing grain security projects and instituting other relevant grain security policies, China has promoted the process of digitalization and intelligence of grain storage and built the world's largest grain Internet of Things, since the 18th National Congress of the Communist Party of China. But, the resulting large amount of grain data, mainly based on temperature, can not effectively support decision-making and management on grain storage. Based on the study of the multi-field coupling theory of grain pile ecosystem, our research team further extracted the continuity principle, periodicity principle, and coordination principle of digital supervision of grain reserves, and proposed a series of intelligent strategies such as AID, ABC, 6R, SIN, CAE, O, and U. However, the application of these strategies directly faces the original data, which has some problems such as low efficiency and large error. To apply the intelligent strategies efficiently and correctly, the basic data manual of intelligent analysis of grain condition has been developed, according to the original grain condition data of typical granaries and main grain varieties in different grain storage ecological regions in China. The development of this manual is expected to consolidate the foundation of intelligent analysis of grain situation, which could promote the digital monitoring of grain storage quantity and quality, and realize the transformation from "manual defense" to “technical defense”.

Lithium-ion battery cathode materials of Mg doped Li1.2Mn0.6Ni0.2O2 were prepared by combustion synthesis. The phase structures and morphologies of the as-prepared samples were characterized by X-ray diffractometer, Raman spectroscopy and scanning electron microscope, respectively, and their electrochemical performance was measured. Results show that the as-prepared samples have better hexagonal layered structure, with spherical-like appearance. Through Mg2+ doping, the initial coulombic efficiency, cyclic stability and rate capacity are efficiently enhanced for the Li1.2Mn0.6Ni0.2O2 material. When the Mg2+ content is 0.02, the battery sample exhibits excellent electrochemical performance.

The properties of cathode materials play an important role in the development and application for lithium ion batteries. However, their phase transition, low conductivity and side reaction with electrolyte restrict the further improvement of battery performance. Coating is one of the effective techniques to overcome these problems. This paper focuses on the influence of surface coating on the properties of cathode materials for lithium ion batteries. The research progress of various coating materials was summarized. The modification mechanism of coating materials was also elaborated. And the future development trend of coating materials was proposed, for example, exploring continuously new coating materials with excellent performance, investigating in depth coating mechanism, and optimizing further coating technologies.

This paper presents the development status and tendency of quantum dot sensitized solar cells. Photoanode research progress and its related technologies are analyzed in detail from the three ways of semiconductor thin films, quantum dot co-sensitization and quantum dot doping, deriving from the approach that the conversion efficiency can be improved by photoanode modification for quantum dot sensitized solar cells. According to the key factors which restrict the cell efficiency, the promising future development of quantum dot sensitized solar cells is proposed,for example,optimizing further the compositions and structures of semiconductor thin films for the photoanodes, exploring new quantum dots with broadband absorption and developing high efficient techniques of interface modification.

Aesthetic education, conveyed through public art courses, serves as a vital form of humanistic literacy education. It represents an effective approach to fostering innovative and creative thinking among college students. In order to effectively analyze the aesthetic education work of 46 universities, an aesthetic education index evaluation system is constructed, involving indicators including faculty strength, curriculum setting, teaching management, artistic practice, and teaching support. The secondary indicators corresponding to the five indicators are statistically analyzed, and a comprehensive evaluation analysis of the current development status of aesthetic education in 46 universities in Anhui Province is conducted by combining theoretical analysis with empirical analysis. Based on principal component analysis, an integrated evaluation model for the development of aesthetic education in universities in Anhui Province is further constructed. The model designed quantifies the influence weight of each aesthetic education index on the development of aesthetic education in Anhui Province, and forges a theoretical basis for determining the precursors of rapid development of aesthetic education in Anhui Province. Additionally, a novel approach is introduced to gauge the progression of aesthetic education within universities in Anhui Province, considering the dispersion of aesthetic education index data across the province. The comprehensive evaluation model for the development of aesthetic education in Anhui Province exhibits an overall declining trend. Hence, it is suggested to utilize the maximum value of the first derivative of the comprehensive evaluation model as an indicator of the imminent rapid development of aesthetic education in Anhui Province. On this basis, the probability equation of sustainable development of aesthetic education in Anhui Province is defined. Overall, the research results lay a theoretical foundation for the development of aesthetic education in Anhui Province. [ABSTRACT FROM AUTHOR]

In order to investigate the influence of negative pressure on the interface of T2/Q235 explosive-welded composite plate, low-explosion-velocity diatomite-sensitized powder emulsion explosive with low explosion velocity was used as the welding special explosive, and T2 and Q235 were used as cladding and base plate, respectively. The explosive welding tests were carried out under atmospheric pressured00kPa), 60kPa, and 20kPa ambient pressures, respectively. The morphology and elemental composition of the composite interface were studied by means of metallographic analysis. The mechanism of negative pressure explosive welding was further revealed by numerical simulation. The results show that the charge density of powder emulsion explosive is increased under negative pressure conditions. The detonation velocity of powder emulsion explosive is not changed, and the brisance of powder emulsion explosive under 20kPa is 8.4% higher than that under ambient pressure condition. With decrease of ambient pressure, the interface wave height and wavelength of the composite plate gradually increases. At 20kPa, the wave height and wavelength increase by 49% and 23%, respectively. The oxygen element of T2/Q235 bonding surface under negative pressure is lower than that under ambient pressure. The numerical simulation results show that the T2/Q235 interface wave increases with the increase of explosive density, which is consistent with the experimental results. In the explosion welding process, the impact velocity and pressure of explosives increase by 16.3% and 66. 3% respectively, when the charge density of explosive was 0. 8g/cm³ under negative pressure (20kPa) as compared to 0.711 g/cm³ under normal pressure. The results show that the negative pressure improves the efficiency of explosive energy in explosive welding compared with normal pressure. [ABSTRACT FROM AUTHOR]