Xuzhou Institute of Technology

About: Xuzhou Institute of Technology is a education organization based out in Xuzhou, China. It is known for research contribution in the topics: Catalysis & Computer science. The organization has 1696 authors who have published 1521 publications receiving 13541 citations.

Intelligent Classroom Attendance Checking System Based on RFID and GSM

Abstract: Nowadays many colleges use galaxy network technology as well as computer and Internet technology, give full play to various technical means of information network and make good use of various kinds of various education, scientific research and information resources, develop all kinds of application system and management system, realize network interaction management, and thus fully promote the development of higher education informatization. An intelligent classroom attendance checking system is introduced in this paper. As an important part of campus management system, this system can intelligently complete examining students’ attendance. In addition, this system can automatically collect data information in real time, automatically analyze and process the collected data, report these data using visual interface, and thus intelligently implement SMS notification at the same time. The traditional way is to assess, record and manage the attendance of students by roll call or magnetic card, which not only consumes the time, but also interferes with each other; while RFID student attendance application system is applied to manage the attendance of students using RFID technology, which not only completes the attendance checking conveniently and quickly, but also saves resources.

Microwave-Ultrasonic Synergistic Extraction of Crude Se-Polysaccharides from Se-Enriched Tea

Abstract: Se-polysaccharides are organic Se-conjugated biological macromolecules with stronger biological activities than Se-free polysaccharides. Se-polysaccharides, as a kind of biological materials, can be extracted from Se-enriched tea and can increase the added value of tea production. Microwave–ultrasonic synergistic extraction exhibits the advantages of microwave and ultrasonic extraction and thus provides an economic and effective path for utilization of Se-polysaccharides. In this study, Se-polysaccharides were extracted from Se-enriched tea by microwave–ultrasonic synergistic method for the first time. The optimal condition was determined through single-factor experiment and L9(43) orthogonal experiment. Results showed that the optimal condition comprised the following: ratio of solvent to material of 20:1, microwave power of 250 W, extraction temperature of 60 °C, and extraction time of 210 s; under this condition, the extraction rate of Se-polysaccharides reached the maximum value of 4.56%. This study shows that microwave–ultrasonic synergistic extraction is an efficient technology for extracting Se- polysaccharides from Se-enriched tea.

1-(4-Amino-2-Hydroxyphenyl)Ethenone Suppresses Agrobacterium tumefaciens Virulence and Metabolism

Abstract: The impact of 1-(4-amino-2-hydroxyphenyl)ethanone (AHPE) from the metabolites of endophytic fungus Phomopsis liquidambari on quorum sensing (QS) of Agrobacterium tumefaciens was evaluated for the first time in this study. Exposure to AHPE at concentrations ranging from 12.5 to 50 μg/mL, the β-galactosidase activity, acyl-homoserine lactone level, swimming motility, chemotaxis, and flagella formation were significantly inhibited. qRT-PCR quantification combined with the docking analysis demonstrated that AHPE affected the QS system of A. tumefaciens by repressing the transcriptional levels of traI and traR rather than signal mimicry. 1H NMR-based metabolic analysis indicated that the metabolism of A. tumefaciens was notably disturbed with AHPE treatment. AHPE treatment also resulted in the enhanced oxidative stress in A. tumefaciens. The enhanced oxidative stress lead to the disorder of energy supply, protein synthesis, and nucleotide metabolism, and ultimately attenuated the pathogenicity of A. tumefaciens. Our study indicated that AHPE can serve as a potential pesticide to defend against A. tumefaciens.

Energy levels and transition probabilities from the Rayleigh-Ritz variation method: C I and O III

Abstract: The atomic parameters – energy levels, oscillator strengths, transition probabilities, and transition wavelengths have been presented for electric dipole transitions in C I and O III. The results include center-of-gravity energies of LS-terms of configurations 2s22p2, 2s22p3p for even parity and 2s2p3, 2s22p3s, 2s22p3d for odd parity, and probabilities of the corresponding important electric dipole transitions. The calculations are carried out using the multi-configuration Rayleigh-Ritz variation method with moderate-scale wavefunctions. The oscillator strength values in length and velocity gauges show fair agreement with each other, which indicates that the calculated wave functions are reasonably accurate. The calculated results are compared with existing experimental data. The present values show good agreement with the experimental data. The present transition probabilities should be useful for diagnostics as well as for precise spectral modeling in astrophysical and laboratory plasmas.

Energies, fine structures, and transitions of the core-excited sextet states 6Se,o(n) and 6Pe,o(n) (n=1–5) of B-like ions

Abstract: A comprehensive theoretical study of atomic characteristics of energy levels and transitions for the core-excited 6Se,o(n) and 6Pe,o(n) (n=1–5) states of the boron isoelectronic sequence (Z=6–14) are investigated by the Rayleigh–Ritz variation method and multi-configuration interaction wavefunctions. The relativistic corrections and mass polarization effects are included by first-order perturbation theory. The configuration structures of the high-lying sextet series 6Se,o(n) and 6Pe,o(n) (n=1–5) of the B-like ions are assigned. The transition rates and wavelengths for the electric dipole transitions 6Se,o(n)—6Po,e(n) (n=1–5) of the B-like ions are calculated and compared with currently available theoretical and experimental data. Furthermore, the radiative transition rates and wavelengths for the important dipole transitions are discussed with the increase of nuclear charge number Z. The calculations will provide useful data for identification of spectral lines arising from the solar atmosphere and the experimental study in future work.