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Formation Mechanism and Binding Energy for Icosahedral Central Structure of He13^＋ Cluster

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Communications in Theoretical Physics 2004年第5X期42卷 763-767页

作者： ZHANGJian-Ping GOUQing-Quan LIPing DepartmentofPhysics LeshanTeacher'sCollegeLeshan614000China DepartmentofPhysics LeshanTeacher'sCollegeLeshan614000China

The formation mechanism for the icosahedral central structure of the He1+13 cluster is proposed and its total energy curve is calculated by the method of a Modified Arrangement Channel Quantum Mechanics. The energy is the function of separation R between two nuclei at the center and an apex of the icosahedral central structure. The result of the calculation has shown that the curve has a minimal energy -37.5765 (a.u.) at R = 2.70ao. The binding energy of He+13 with respect to He+ + 12He was calculated to be 1.4046 a.u. This means that the cluster of He+13 may be formed in an icosahedral central structure with strong binding energy.

关键词：结合能二十面体中央结构氦核离子束 ?A结合能二十面体中央结构氦核稳定性离子态

Real-Time Dwell Scheduling Based on a Unified Pulse Interleaving Framework for Phased Array Radar

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Tsinghua Science and Technology 2024年第5期29卷 1540-1553页

作者： Ting Cheng Luqing Liu Zhongzhu Li Siyu Heng School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 614000China

Dwell scheduling is a key for phased array radar to realize multi-function and it becomes especially challenging in complex tactical *** this manuscript,a real-time radar dwell scheduling algorithm based on a unified pulse interleaving framework is proposed.A unified pulse interleaving framework that can realize pulse interleaving analysis for phased array radars with different receiving modes is put forward,which greatly improves the time utilization of the *** on above framework,a real-time two-stage approach is proposed to solve the optimization problem of dwell *** importance and urgency criteria are guaranteed by the first pre-schedule stage,and the desired execution time criterion is improved at the second stage with the modified particle swarm optimization(PSO).Simulation results demonstrate that the proposed algorithm has better comprehensive scheduling performance than up-to-date algorithms that consider the pulse interleaving technique for both single beam and multiple beams receiving ***,the proposed algorithm can realize dwell scheduling in realtime.

关键词： phased array radar dwell scheduling receiving mode pulse interleaving particle swarm optimization

Artificial Immune Detection for Network Intrusion Data Based on Quantitative Matching Method

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Computers, Materials & Continua 2024年第2期78卷 2361-2389页

作者： CaiMing Liu Yan Zhang Zhihui Hu Chunming Xie School of Electronic Information and Artificial Intelligence Leshan Normal UniversityLeshan614000China Intelligent Network Security Detection and Evaluation Laboratory Leshan Normal UniversityLeshan614000China Internet Natural Language Intelligent Processing Key Laboratory of Education Department of Sichuan Province Leshan Normal UniversityLeshan614000China

Artificial immune detection can be used to detect network intrusions in an adaptive approach and proper matching methods can improve the accuracy of immune detection *** paper proposes an artificial immune detection model for network intrusion data based on a quantitative matching *** proposed model defines the detection process by using network data and decimal values to express features and artificial immune mechanisms are simulated to define immune ***,to improve the accuracy of similarity calculation,a quantitative matching method is *** model uses mathematical methods to train and evolve immune elements,increasing the diversity of immune recognition and allowing for the successful detection of unknown *** proposed model’s objective is to accurately identify known intrusions and expand the identification of unknown intrusions through signature detection and immune detection,overcoming the disadvantages of traditional *** experiment results show that the proposed model can detect intrusions *** has a detection rate of more than 99.6%on average and a false alarm rate of 0.0264%.It outperforms existing immune intrusion detection methods in terms of comprehensive detection performance.

关键词： Immune detection network intrusion network data signature detection quantitative matching method

Integrated Analysis of Metabolome and Transcriptome of Bambusa emeiensis Shoots in Response to Bamboo Snout Beetle Cyrtotrachelus buqueti(Coleoptera:Curculionidae)

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Phyton-International Journal of Experimental Botany 2022年第6期91卷 1227-1244页

作者： Hao Tang Yuanqiu Li Chaobing Luo College of Life Science Leshan Normal UniversityLeshan614000China

Plants have evolved constitutive and inductive defense mechanisms to protect themselves from herbivorous *** in plants are thought to be involved in response to *** emeiensis is an important bamboo species widely distributed in Southwest *** is easy to attract herbivores such as Cyrtotrachelus *** the detection and analysis of metabolites in *** metabolomic data,35 differential metabolites(biomarkers)were finally identified from 206 detection peaks,mainly primary ***,we conducted an association analysis between 35 biomarkers that annotated to be involved in 71 metabolic pathways in the metabolome and 324 differentially expressed genes(DEGs)in 207 gene expression pathways distributed in the transcriptome of *** after feeding by *** also discussed the relationship between the changes in gene expression levels and metabolite content variation.A total of 47 integrated pathways containing the corresponding DEGs and biomarkers were screened out,with the amino acid synthesis pathway(ko01230)containing the most DEGs and *** these integrated pathways,the changes in biomarkers content and the expression levels of the corresponding genes were generally *** example,the increase in tryptophan content was accompanied by an increase in the expression of the corresponding catalase in the tryptophan synthesis *** to this was glucose and trehalose in carbohydrate ***,this study further deepened our understanding of the defense mechanism of *** against bamboo pests and provided new insights for the prevention and control of bamboo diseases and pests.

关键词： Bambusa emeiensis herbivore Cyrtotrachelus buqueti metabolome transcriptome

Thin-film approximate point scattered function and its application to neutron radiography

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Nuclear Science and Techniques 2022年第9期33卷 1-9页

作者： Jun Qin Jia-Yu Ni Lin-Feng Ye De-Hong Gao Wei-Jun Jiang Department of Nuclear Engineering and New Energy Technology The College of Engineering and Technology of Chengdu University of TechnologyLeshan 614000SichuanChina Society for Theoretical and Computational Physics The College of Engineering and Technology of Chengdu University of TechnologyLeshan 614000SichuanChina

A simpler and improved utility approximate point scattered function for thin-film converters currently used in neutron photographic devices is proposed as a correction method to produce clearer,more realistic *** validity of the model was demonstrated through a simulation *** on the results,an error analysis was carried out,certain corrections were made to the original model,and the final model achieved a very low relative error in the simulation *** model can also be optimized for quantitative neutron photographic analysis using iterative algorithms to obtain realistic neutron photographic images more *** the end of the article,the model is extended to consider the case of energy spectrum hardening by introducing a temperature correction parameter.

关键词： Neutron radiography Point scattered function Image processing

Stability of the Liquid-Vapor Interface under the Combined Influence of Normal Vibrations and an Electric Field

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Fluid Dynamics & Materials Processing 2024年第11期20卷 2541-2563页

作者： Vladimir Konovalov Institute of Continuous Media Mechanics The Ural Branch of RASPerm614000Russia

The regime of horizontal subcooled film boiling is characterized by the formation of a thin layer of vapor coveringthe surface of a flat horizontal heater. Based on the equations of motion of a viscous incompressible fluid and theequation of heat transfer, the stability of such a vapor film is investigated. The influence of the modulation of thegravity field caused by vertical vibrations of the heater of finite frequency, as well as a constant electric fieldapplied normal to the surface of the heater, is taken into account. It is shown that in the case of a thick vaporfilm, the phase transition has a little effect on the thresholds for the occurrence of parametric instability in thesystem and its transformation into the most dangerous one. At the same time, the electric field contributes toan increase in these thresholds. It was found that the effect of vibrations on the stabilization of non-parametricinstability in the system is possible only in a narrow region of the parameter space where long-wave damped disturbances exist and consists of reducing the critical heat flux of stabilization. A vapor film stabilized in this waycan be destroyed due to the development of parametric instability. In contrast to the case of a thick vapor layer,the threshold for the onset of parametric instability for thin films largely depends on the value of subcooling in thesystem. In addition, this threshold decreases with increasing electric field strength. For a vapor film ten micronsthick, the instability threshold can be reduced by a factor of three or more by applying an electric field of aboutthree million volts per meter.

关键词： Film boiling subcooling phase transition vibrations electricfield

AN EMPIRICAL FORMULA FOR CALCULATING WORK FUNCTION OF ELEMENTS

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Chinese Science Bulletin 1992年第4期37卷 343-344页

作者：舒元梯 Department of Chemistry Leshan Teachers' College Leshan 614000 PRC

Work function of an element is an important measure for inquiring into the physical properties of crystals. It is concerned with not only the properties of the element itself, number and distribution of outermost elec... 详细信息

关键词： concerned itself cubic covalent hexagonal orbital tetragonal diamond trigonal agree

Preliminary Study on the Treatment Efficiency of Pasteurized Lime Thermal Alkaline Hydrolysis for Excess Activated Sludge and Reduction of Tetracycline Resistance Genes

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Journal of Renewable Materials 2023年第10期11卷 3711-3723页

作者： Maoxia Chen Qixuan Zhou Jiayue Zhang Jiaoyang Li Wei Zhang Huan Liu School of New Energy Materials and Chemistry Leshan Normal UniversityLeshan614000China South Sichuan Pollution Control and Resource Recovery Research Center Leshan Normal UniversityLeshan614000China

Thermal alkaline hydrolysis is a common pretreatment method for the utilization of excess activated sludge(EAS).Owing to strict environment laws and need for better energy utilization,new methods were developed in this study to improve the efficiency of pretreatment *** thermal hydrolysis(TH),pasteurized thermal hydrolysis(PTH),and alkaline pasteurized thermal hydrolysis(PTH+CaO and PTH+NaOH)methods were used to treat *** method was compared and analyzed in terms of dissolution in ammonium nitrogen(NH_(4)^(+)-N)and soluble COD(SCOD)in ***,the removal of tetracycline resistance genes(TRGs)and class 1 transposon gene intI1 from EAS was *** NH_(4)^(+)-N and SCOD concentrations in EAS treated by PTH were 1.24 and 2.58 times higher than those of ***,the removal efficiency of total TRGs and intI1 between the groups was *** SCOD concentration of the PTH+NaOH group was 4.37 times higher than that of the PTH group,and the removal efficiency of total TRGs was increased by 9.52%compared with that by *** NH_(4)^(+)-N and SCOD concentrations of the PTH+CaO group could reach 85.04%and 92.14%of the PTH+NaOH group,but the removal efficiency of total TRGs by PTH+CaO was 19.78%lower than that by PTH+***,to reduce the financial cost in actual operation,lime(CaO)can be used instead of a strong alkali(NaOH),and pasteurized steam at 70℃ instead of conventional high-temperature heating to treat *** study provides a reference for the development of alkaline hydrolysis under moderate temperatures along with the removal of TRGs in EAS.

关键词： Excess activated sludge tetracycline resistance genes thermal alkaline hydrolysis lime pasteurized thermal hydrolysis

V0405 Dra:A New Deep and Low Mass Ratio Contact Binary with Extremely Fast Decrease in the Orbital Period

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Research in Astronomy and Astrophysics 2024年第6期24卷 287-293页

作者： Chao-Yue Li Lin-Qiao Jiang Jie Zheng Yi-Man Liu Xiao-Yu Long Min Sun Han-Lu Zhang Xiao-Man Tian School of Science Leshan Normal UniversityLeshan 614000China Center for Applied Optics Research Leshan Normal UniversityLeshan 614000China Key Laboratory of Detection and Application of Space Effect in Southwest Sichuan Leshan 614000China CAS Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Aeronautics Shandong Jiaotong UniversityJinan 250000China

V0405 Dra is a W UMa-type binary *** on the TESS data,we have conducted an orbital period study and performed a light curve analysis for the *** orbital period study reveals that the O-C curve for V0405 Dra exhibits secular decrease at an extremely high rate of d P/dt=-2.71×10^(-6)day year^(-1),along with periodic variations characterized by an amplitude of A_(3)=0.0032 day and a period of P_(3)=1.413 *** orbital periodic change is possibly due to the light-travel time effect resulting from an additional third body in the system,for which we estimate a minimum mass of M_(3)=0.77M_(⊙).By employing the 2013 version of the Wilson-Devinney(W-D)method to synthesize a light curve,we derived photometric solutions indicating that V0405 Dra is a new deep(f=68.7%)and low-mass ratio(q=0.175)contact *** fast decrease in its orbital period is likely caused by mass transfer from the more massive primary star to the less massive secondary star,or due to angular momentum *** further mass transfer and loss of angular momentum,the binary will gradually evolve into a tighter contact configuration,eventually leading to a merger into a single star,following the evolutionary paths suggested for such deep and low mass ratio contact binaries.

关键词： (stars:)binaries(including multiple):close (stars:)binaries:eclipsing stars:individual(V0405 Dra)