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Tabletop 3D display is an emerging display form that enables multiple users to share viewing around a central tabletop, making it promising for the application of collaborative work. However, achieving an ideal ring-shaped viewing zone with a large radial viewing angle remains a challenge for most current tabletop 3D displays. This paper presents a tabletop 3D display based on a panoramic annular lens array to realize a large radial viewing angle. Each panoramic annular lens in the array is designed with a block-structured panoramic front unit and a relay lens system, enabling the formation of a ring-shaped viewing zone and increasing the radial angle of the outgoing light. Additionally, the diffusion characteristics of the optical diffusing screen component are analyzed under large angles of incidence after light passes through the panoramic annular lens array. Then, a method for generating the corresponding elemental image array is presented. The results of the simulation experiments demonstrate that the viewing range is improved to −78.4–−42.2° and 42.6–78.9°, resulting in a total radial viewing angle of up to 72.5°, and the proposed 3D display can present a 360° viewable 3D image with correct perspective and parallax.

Sodium benzoate (SB) is widely used as a preservative in food industry, and bovine serum albumin (BSA) is a major carrier protein similar to human serum albumin (HSA), the study of the binding between the two has great significance on human health. In this paper, we systematically investigated the binding of SB and BSA under the simulated physiological conditions combining with various common analytical methods, e.g., fluorescence, UV–vis absorption, synchronous fluorescence and circular dichroism (CD) spectra, as well as molecular docking method. The fluorescence quenching measurements were respectively carried out at 298 K, 303 K and 308 K using the Stern–Volmer method. The results reveal that ground state SB–BSA complex was formed within the binding constants from 2.02 × 104 to 7.9 × 103 M−1. Meanwhile, the negative values of ΔH0 (− 43.92 kJ mol−1) and ΔS0 (− 111.6 J mol−1 K−1) demonstrated that both the hydrogen binding interaction and van der Waals forces contributed to stabilizing the SB–BSA complex. The site marker competitive experiments show that the SB and BSA bound at site I. Furthermore, the experimental results of UV–vis absorption, synchronous fluorescence and CD spectra indicate that the binding of SB and BSA may change the conformation of BSA. In addition, the molecular docking experiment suggests that hydrogen bond was formed in the interaction between SB and BSA.

Graphene is an ideal reinforcing phase for a high-performance composite filler, which is of great theoretical and practical significance for improving the wettability and reliability of the filler. However, the poor adsorption characteristics between graphene and the silver base filler significantly affect the application of graphene filler in the brazing field. It is a great challenge to improve the adsorption characteristics between a graphene and silver base filler. To solve this issue, the adsorption characteristic between graphene and silver was studied with first principle calculation. The effects of Ga, Mo, and W on the adsorption properties of graphene were explored. There are three possible adsorbed sites, the hollow site (H), the bridge site (B), and the top site (T). Based on this research, the top site is the most preferentially adsorbed site for Ag atoms, and there is a strong interaction between graphene and Ag atoms. Metal element doping enhances local hybridization between C or metal atoms and Ag. Furthermore, compared with other doped structures (Ga and Mo), W atom doping is the most stable adsorption structure and can also improve effective adsorption characteristic performance between graphene and Ag.

Considering the current absence of adequate equipment at home and abroad to directly detect the ion content of formation water under high temperature and pressure conditions. A static experiment was established to examine the solubility of ions in fluids. The effect of cations on the solubility of CaCO 3 at different temperatures and pressures was investigated through experiments, and the variation law of ion content and its internal relationship under high temperature and pressure conditions were studied. In solution of barium chloride and magnesium chloride, the solubility of CaCO 3 increases gradually as the level of its concentration. At the same concentration, the solubility of CaCO 3 show decreases first and then increases trend as the level of temperature. In the solution of strontium chloride, as the level of strontium chloride concentration, and the solubility of CaCO 3 was progressively reduced. At the same concentration, the solubility of CaCO 3 decreases first and then increases as the level of temperature. under the influence of carbon dioxide, the solubility of CaCO 3 gradually decreases with increasing temperature. influence of pressure on the solubility of CaCO 3 at low temperature is larger. The solubility of CaCO 3 exhibits minimal variation as the level of PCO 2 at higher temperature. However, when the pressure reaches a certain degree (above 3MPa), the a downward trend in solubility was observed.

Gold loaded Bi2WO6 (Au/Bi2WO6) nanosheet-based microspheres were prepared via a hydrothermal method combined with an in-situ reduction approach. The products were characterised by scanning electron microscopy, a high-resolution transmission electron microscope, X-ray diffraction, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and UV–vis diffuse reflectance. The characterisation results revealed that it was the Au nanoparticles deposited on Bi2WO6 microspheres. A photocatalytic test for the degradation of phenol proved that Au loading was an effective means to enhance the photocatalytic activity of Bi2WO6 nanosheet-based microspheres under visible-light irradiation (λ > 420 nm). The photocatalytic mechanism over the Au/Bi2WO6 was analysed by active species trapping experiments. The main active species •OH for the photocatalytic test was produced by two pathways, that is, photogenerated holes oxidised water molecules to form •OH (oxidative pathway), and O2 captured the photogenerated electron to generate •O2 − and subsequently produce •OH (reductive pathway).

Ag2O/Ag3PO4 heterostructures photocatalysis was prepared for the first time. Photocatalytic tests displayed that the Ag2O/Ag3PO4 heterostructures possessed a much higher degradation rate of methyl orange and phenol than pure Ag3PO4 under visible light. The enhanced photocatalytic activity could be attributed to effective separation of photogenerated carriers driven by photoinduced potential difference generated at the Ag2O/Ag3PO4 heterojunction interface. Repetitive tests showed that the Ag2O/Ag3PO4 heterostructures maintained high stability over several cycles, and it had better regeneration capability under mild conditions. The good stability could be attributed to the protection of insoluble Ag2O nanoparticles on the surfaces of Ag3PO4 crystals in aqueous solution.

During the development of water drive gas reservoirs, the phenomena of gas escaping from water and water separating out from gas will change the seepage characteristics of formation fluid. Therefore, the traditional gas-water two-phase inflow performance relationship (IPR) models are not suitable for calculating the water producing gas well inflow performance relationship in water drive gas reservoirs. Based on the basic theory of fluid mechanics in porous medium, using the principle of mass conservation, and considering the process of dissolution and volatilization of gas and water formation, this paper establishes a new mathematical model of gas-water two-phase flow. Multiobjective optimization method is used to automatically match the sample well production data in water drive gas reservoirs and then we can achieve the sample well’s productivity equation, relative permeability curve, water influx intensity, and single well controlled reserves. In addition, the influence of different production gas water ratios (GWR) and gas-soluble water coefficients on absolute open flow rate (qAOF) is discussed. This method remedied the limitation of well testing on site and was considered to be a new way to analyze the production behaviors in water producing gas well.

Multiple recursive generators are an important class of pseudorandom number generators which are widely used in cryptography. Methods to predict the whole sequences by the truncated high-order bits of the sequences are not only a crucial aspect of evaluating the security of pseudorandom number generators but also important concerns in the design of pseudorandom number generators. This paper improves the work of Sun et al. (Des Codes Cryptogr 88:1083–1102, 2020) on the predictability of truncated multiple recursive generators with unknown parameters. Given a few truncated digits of high-order bits output by a multiple recursive generator, we first apply the resultant to recover the modulus, then use the Chinese Remainder Theorem and the idea of recovering p -adic coordinates of the coefficients layer by layer to recover the coefficients, and finally employ Kannan’s embedding technique to recover the initial state. Experimental results show that our new method is superior to that of Sun et al. (2020), no matter in terms of the running time or the number of truncated digits required.

A dual fractal reservoir transient flow model was created by embedding a fracture system simulated by a tree-shaped fractal network into a matrix system simulated by fractal porous media. The dimensionless bottom hole pressure model was created using the Laplace transform and Stehfest numerical inversion methods. According to the model's solution, the bilogarithmic type curves of the dual fractal reservoirs are illustrated, and the influence of different fractal factors on pressure transient responses is discussed. This semianalytical model provides a practical and reliable method for empirical applications.