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The Photoionization of Atomic Hydrogen in an Intense Circularly Polarized Laser Field

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Communications in Theoretical Physics 2001年第12期36卷 685-690页

作者： zhang deng zhang Qi-Ren Department of Technical Physics Peking University Beijing 100871 China Department of Technical Physics Peking University Beijing 100871 China

We calculate nonperturbatively the irfluence of a strong circularly polarized laser beam on the hydrogen atom energy levels by making use of the time-independent formalism proposed by one of us. The photoionization cross section of the hydrogen atom irradiated by this laser beam and the angular distribution of photoelectrons are also calculated. From the numerical results we clearly see the intensity dependence of the whole photoionization process,including the intensity dependence of the photoelectron energies.

关键词： intensity dependence of photoelectron energies, photoionization, atomic hydrogen

The Mechanical Analysis and Experimental Study of Shock Wave Effect of Electrical Discharge under Water In Filth Cleaning

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上海交通大学学报 2004年第Z2期38卷 229-234页

作者： deng Qilin zhang Lei Zhou Jinjin Shanghai Jiaotong University Shanghai 200030 China Dalian University of Technology Dalian 116024 China Dalian University of Technology Dalian 116024 China

Filth adhering to metal pipes can be cleaned by shock wave generated by electrical discharge under water. The mechanism of shock wave effect of electrical discharge under water on filth cleaning is analyzed by building a mechanical model. A metal pipe coated with cement to simulate real filth is cleaned by using electrical discharge under water. The experimental results confirm the mechanical analysis and also show the technology of electrical discharge under water is an very effective method for filth cleaning.

关键词： shock wave filth cleaning effect of electrical discharge under water

PREDICTION OF THE VISCOELASTIC PROPERTIES OF THE EQUIVALENT PARTICLE FOR THE INTERCALATED MULTI-LAYER STACK OF NANOPLASTICS

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Acta Mechanica Solida Sinica 2007年第4期20卷 317-323页

作者： Weimin zhang Ping zhang Xuhui deng Chunyuan zhang College of Civil Engineering and Mechanics Xiangtan University Xiangtan 411105 China

The aim of this paper is to apply the asymptotic homogenization method to determining analytically and numerically the transversely isotropic viscoelastic relaxation moduli of the equivalent particle for the intercalated multi-layer stack of intercalated type nanoplastics. A two-phase multilayered material containing n layers is considered. The matrix is assumed to be an isotropic viscoelastic standard linear body and the reinforcement is assumed to be an isotropic elastic body. Final explicit analytical formulae for the effective elastic moduli of the multilay- ered material are derived first; and then the correspondence principle is employed to obtain the homogenized relaxation moduli of the equivalent intercalated particle. A numerical example is given. Final explicit analytical formulae in the time domain derived here make it convenient to estimate the influence of all the particle parameters of micro-structural details on the effective properties of the equivalent intercalated particle. The results of this paper can also be applied to multi-layer composites.

关键词： viscoelasticity mechanical properties nanocomposites nanoplastics

In silico screening of Chinese herbal medicines with the potential to directly inhibit 2019 novel coronavirus

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Journal of Integrative Medicine 2020年第2期18卷 152-158页

作者： deng-hai zhang Kun-lun Wu Xue zhang Sheng-qiong deng Bin Peng Shanghai Health Commission Key Lab of Artificial Intelligence(AI)-Based Management of Inflammation and Chronic Diseases Sino-French Cooperative Central LabShanghaiPudong Gongli HospitalSecondary Military Medical UniversityShanghai 200135China Department of Traditional Chinese Medicine Shanghai Pudong Gongli HospitalSecondary Military Medical UniversityShanghai 200135China Department of Research Affair Management Shanghai Pudong Gongli HospitalSecondary Military Medical UniversityShanghai 200135China

Objective: In this study we execute a rational screen to identify Chinese medical herbs that are commonly used in treating viral respiratory infections and also contain compounds that might directly inhibit 2019 novel coronavirus(2019-nCoV), an ongoing novel coronavirus that causes ***: There were two main steps in the screening process. In the first step we conducted a literature search for natural compounds that had been biologically confirmed as against sever acute respiratory syndrome coronavirus or Middle East respiratory syndrome coronavirus. Resulting compounds were cross-checked for listing in the Traditional Chinese Medicine Systems Pharmacology *** meeting both requirements were subjected to absorption, distribution, metabolism and excretion(ADME) evaluation to verify that oral administration would be effective. Next, a docking analysis was used to test whether the compound had the potential for direct 2019-nCoV protein *** the second step we searched Chinese herbal databases to identify plants containing the selected compounds. Plants containing 2 or more of the compounds identified in our screen were then checked against the catalogue for classic herbal usage. Finally, network pharmacology analysis was used to predict the general in vivo effects of each selected ***: Of the natural compounds screened, 13 that exist in traditional Chinese medicines were also found to have potential anti-2019-nCoV activity. Further, 125 Chinese herbs were found to contain 2 or more of these 13 compounds. Of these 125 herbs, 26 are classically catalogued as treating viral respiratory infections. Network pharmacology analysis predicted that the general in vivo roles of these26 herbal plants were related to regulating viral infection, immune/inflammation reactions and hypoxia ***: Chinese herbal treatments classically used for treating viral respiratory infection might contain direct anti-2019-nCoV compounds.

关键词： 2019-nCoV Wuhan coronavirus Drugs Chinese herbal Pneumonia Natural compounds Molecular docking Network pharmacology

AutoBPS-BIM:A toolkit to transfer BIM to BEM for load calculation and chiller design optimization

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Building Simulation 2023年第7期16卷 1287-1298页

作者： Zhihua Chen zhang deng Adrian Chong Yixing Chen College of Civil Engineering Hunan UniversityChangshaHunan 410082China Key Laboratory of Building Safety and Energy Efficiency(Hunan University) Ministry of EducationChina Department of Building National University of Singapore4 Architecture Drive117566Singapore

This study developed a rapid building modeling tool,AutoBPS-BIM,to transfer the building information model(BIM)to the building energy model(BEM)for load calculation and chiller design *** eight-storey office building in Beijing,33.2 m high,67.2 m long and 50.4 m wide,was selected as a case study ***,a module was developed to transfer BIM in IFC format into BEM in *** air volume systems were selected for the air system,while water-cooled chillers and boilers were used for the central *** EnergyPlus model calculated the heating and cooling loads for each space as well as the energy consumption of the central ***,a chiller optimization module was developed to select the optimal chiller design for minimizing energy consumption while maintaining thermal *** available chillers were included,with capacities ranging from 471 kW to 1329 *** results showed that the cooling loads of the spaces ranged from 33 to 100 W/m^(2) with a median of 45 W/m^(2),and the heating load ranged from 37 to 70 W/m^(2) with a median of 52 W/m^(2).The central plant’s total cooling load under variable air volume systems was 1400 *** with the static load calculation method,the dynamic method reduced 33%of the chiller design *** two chillers were used,different chiller combinations’annual cooling energy consumption ranged from 10.41 to 11.88,averaging 11.12 kWh/m^(2).The lowest energy consumption was 10.41 kWh/m^(2) when two chillers with 538 kW and 1076 kW each were *** the proper chiller number with different capacities was critical to achieving lower energy consumption,which achieved 12.6%cooling system energy consumption reduction for the case study *** study demonstrated that AutoBPS-BIM has a large potential in modeling BEM and optimizing chiller design.

关键词： BIM building energy model EnergyPlus chiller design optimization AutoBPS-BIM

Archetype identification and urban building energy modeling for city-scale buildings based on GIS datasets

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Building Simulation 2022年第9期15卷 1547-1559页

作者： zhang deng Yixing Chen Jingjing Yang Zhihua Chen College of Civil Engineering Hunan UniversityChangsha 410082China Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education Hunan UniversityChangsha 410082China

Urban building energy modeling has become an efficient way to understand urban building energy use and explore energy conservation and emission reduction *** paper introduced a method to identify archetype buildings and generate urban building energy models for city-scale buildings where public building information was unavailable.A case study was conducted for 68,966 buildings in Changsha city,***,clustering and random forest methods were used to determine the building type of each building footprint based on different GIS ***,the convolutional neural network was employed to infer the year built of commercial buildings based on historical satellite images from multiple *** year built of residential buildings was collected from the housing ***,twenty-two building types and three vintages were selected as archetype buildings to represent 59,332 buildings,covering 87.4%of the total floor *** scripts leveraging on OpenStudio-Standards were developed to generate building energy models for the archetype ***,monthly and annual electricity and natural gas energy use were simulated for the blocks and the entire city by *** total electricity and natural gas use for the 59,332 buildings was 13,864 GWh and 23.6×10^(6) *** energy conservation measures were evaluated to demonstrate urban energy saving *** proposed methods can be easily applied to other cities in China.

关键词： urban building energy modeling building type year built-archetype building EnergyPlus

Applying XML for designing and interchanging information for multidimensional model

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Journal of Systems Engineering and Electronics 2005年第4期16卷 823-830页

作者： Lu Changhui deng Su zhang Weiming Coll. of Information System and Management National Univ. of Defense Technology Changsha 410073 P. R. China

In order to exchange and share information among the conceptual models of data warehouse, and to build a solid base for the integration and share of metadata, a new multidimensional concept model is presented based on XML and its DTD is defined, which can perfectly describe various semantic characteristics of multidimensional conceptual model. According to the multidimensional conceptual modeling technique which is based on UML, the mapping algorithm between the multidimensional conceptual model is described based on XML and UML class diagram, and an application base for the wide use of this technique is given.

关键词： data warehouse OLAP multidimensional modeling conceptual model XML UML.

Stability of Functional Equations in Several Variables

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Acta Mathematica Sinica,English Series 2007年第2期23卷 321-326页

作者： deng Hua zhang Huai Xin CAO College of Mathematics and Information Science Shaanxi Normal University

We prove a generalization of Hyers＇ theorem on the stability of approximately additive mapping and a generalization of Badora＇s theorem on an approximate ring homomorphism. We also obtain a more general stability theorem, which gives the stability theorems on Jordan and Lie homomorphisms. The proofs of the theorems given in this paper follow essentially the D. H. Hyers-Th. M. Rassias approach to the stability of functional equations connected with S. M. Ulam＇s problem.

关键词： stability functional equation, Jordan homomorphism, Lie homomorphism

Solvothermal Synthesis, Structural Characterization and Properties of Two New Layered Lanthanide Sulfates

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Chemical Research in Chinese Universities 2013年第5期29卷 831-836页

作者： LU Yun zhang deng XU Yan State Key Laboratory of Materials-oriented Chemical Engineering College of Chemistry and Chemical Engineering Nanjing University of Technology Nanjing 210009 P. R. China

Two new layered lanthanide sulfates, [C10H10N2][Pr2（SO4）4（H2O）2]（1） and [H5O2][Sm（SO4）2（H2O）3]（2） were synthesized via solvothermal reaction and structurally characterized by single-crystal X-ray diffraction（XRD）, infrared（IR） spectroscopy, thermal analysis, fluorescent spectra and inductively coupled plasma（ICP）. Crystal data for compound 1, triclinic, Pi space group, a=0.8052（4） nm, b=0.9438（4） nm, c=1.4990（7） nm, α=79.450（5）°, β= 83.703（5）°, γ=74.048（5）°, V=1.0746（9） nm3, Z=2; for compound 2, monoclinie, P21/c space group, a=0.6599（11） nm, b=1.8940（3） nm, c=0.8765（14） nm, β=96.596（2）°, V=1.0883（3） nm3, Z=4. Structure analysis indicates that both the compounds exhibit a 2D corrugated layer structure, with protonated 4,4＇-bipyridine cations and water dimmers （H5O2）＋ located between the inorganic layers of compounds pounds 1 and 2 were further investigated. 1 and 2, respectively. Luminescent properties of com-

关键词： Solvothermal synthesis Open-framework Lanthanide sulfate Layered structure Luminescence