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Soil CO_2 and N_2O Emissions in Maize Growing Season Under Different Fertilizer Regimes in an Upland Red Soil Region of South China

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Journal of Integrative Agriculture 2014年第3期13卷 604-614页

作者： ZHANG Xu-bo WU Lian-hai SUN Nan ding Xue-shan LI jian-wei WANG bo-ren LI Dong-chu Key Laboratory of Crop Nutrition and Fertilization Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Sustainable Soils and Grassland Systems Department Rothamsted Research Department of botany and Microbiology University of Oklahoma

Upland red soils have been identified as major CO2 and N2O sources induced by human activities such as fertilization. To monitor characteristics of soil surface CO2 and N2O fluxes in cropland ecosystems after continuous fertilizer applications over decades and to separate the respective contributions of root and heterotrophic respiration to the total soil CO2 and N2O fluxes, the measurements of soil surface CO2 and N2O fluxes throughout the maize growing season in 2009 were carried out based on a fertilization experiment （from 1990） through of the maize （Zea mays L.） growing season in red soil in southern China. Five fertilization treatments were chosen from the experiment for study： zero-fertilizer application （CK）, nitrogen-phosphorus- potassium （NPK） fertilizer application only, pig manure （M）, NPK plus pig manure （NPKM） and NPK with straw （NPKS）. Six chambers were installed in each plot. Three of them are in the inter-row soil （NR） and the others are in the soil within the row （R）. Each fertilizer treatment received the same amount of N （300 kg ha-1 yr-1）. Results showed that cumulative soil CO2 fluxes in NR or R were both following the order： NPKS〉M, NPKM〉NPK〉CK. The contributions of root respiration to soil CO2 fluxes was 40, 44, 50, 47 and 35% in CK, NPK, NPKM, M and NPKS treatments, respectively, with the mean value of 43%. Cumulative soil N2O fluxes in NR or R were both following the order： NPKS, NPKM〉M〉NPK〉CK, and soil N2O fluxes in R were 18, 20 and 30% higher than that in NR in NPKM, M and NPKS treatments, respectively, but with no difference between NR and R in NPK treatment. Furthermore, combine with soil temperature at -5 cm depth and soil moisWxe （0-20 cm） together could explain 55-70% and 42-59% of soil CO2 and N2O emissions with root interference and 62- 78% and 44-63% of that without root interference, respectively. In addition, soil CO2 and N2O flUXeS per unit yield in NPKM （0.55 and 0.10 kg C t^-1） and M （0.65 and 0.13 g N t^-1） treatments were

关键词： greenhouse gas emissions carbon dioxide nitrous oxide manure mineral fertilizers straw return South China

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Ultrasound-responsive Homopolymer Nanoparticles

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Chinese Journal of Polymer Science 2020年第4期38卷 349-356,I0006页

作者： bo Yang jian-Zhong Du Department of Orthopedics Shanghai Tenth People's HospitalTongji University School of MedicineShanghai 200072China Department of Polymeric Materials School of Materials Science and EngineeringKey Laboratory of Advanced Civil Engineering Materials of Ministry of EducationTongji UniversityShanghai201804China

Nonin vasive ultraso und is a more effective strategy for on-demand drug delivery of polymeric nano particles than many other ***,the preparation of ultrasound-responsive homopolymer nanoparticles is still very *** this study,we disclose the regulating factors of ultrasound responsiveness of homopolymer nanoparticles and the disaggregation behavior of homopolymer nanoparticle *** nanoparticles such as vesicles and large compound micelles(LCMs)are self-assembled from poly(methoxyethyl methacrylate)(PMEMA)and poly(amic acid)(PAA),*** ultrasound responsiveness of PAA vesicles at metastable state could be regulated by tuning the self-assembly temperature(7^),and was optimized when Ts is around the glass transition temperature(7g)of ***,the PMEMA LCMs did not respond to ultrasound as they are at stable *** the other hand,poly(2-(2-ethoxyethoxy)ethyl acrylate)(PEEA)could self-assemble into vesicle aggregates or complex micelle aggregates,which were dissociated upon ***,the above findings provide us with a fresh in sight for designing ultrasound-responsive polymeric nanoparticles.

关键词： Ultrasound responsiveness Homopolymers Vesicles Micelles Self-assembly

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Liquid-Gas Transition in the Ionic System

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Chinese Physics Letters 1996年第7期13卷 500-503页

作者： ding Guo-hui XU bo-wei Department of Physics Shanghai Jiaotong UniversityShanghai 200030

The phase transition in the ionic system in dimension d=3 is studied in the formulation of quantum sine-Gordon field *** a variational method the phase diagram is investigated,and the critical point terminating the co... 详细信息

关键词： theory conducting Transition

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Electromagnetohydrodynamic (EMHD) flow of fractional viscoelastic fluids in a microchannel

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Applied Mathematics and Mechanics(English Edition) 2022年第6期43卷 917-930页

作者： Shujuan AN Kai TIAN Zhaodong ding Yongjun jian School of Mathematical Science Inner Mongolia UniversityHohhot 010021China

This study investigates the electromagnetohydrodynamic(EMHD)flow of fractional viscoelastic fluids through a microchannel under the Navier slip boundary *** flow is driven by the pressure gradient and electromagnetic force where the electric field is applied horizontally,and the magnetic field is vertically(upward or downward).When the electric field direction is consistent with the pressure gradient direction,the changes of the steady flow rate and velocity with the Hartmann number Ha are irrelevant to the direction of the magnetic field(upward or downward).The steady flow rate decreases monotonically to zero with the increase in *** contrast,when the direction of the electric field differs from the pressure gradient direction,the flow behavior depends on the direction of the magnetic field,i.e.,symmetry breaking ***,when the magnetic field is vertically upward,the steady flow rate increases first and then decreases with *** the magnetic field is reversed,the steady flow rate first reduces to zero as Ha increases from *** Ha continues to increase,the steady flow rate(velocity)increases in the opposite direction and then decreases,and finally drops to zero for larger *** increase in the fractional calculus parameterαor Deborah number De makes it take longer for the flow rate(velocity)to reach the steady *** addition,the increase in the strength of the magnetic field or electric field,or in the pressure gradient tends to accelerate the slip velocity at the *** the other hand,the increase in the thickness of the electric double-layer tends to reduce it.

关键词： electromagnetohydrodynamic(EMHD)flow fractional viscoelastic fluid symmetry breaking

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Three-dimensional elastostatic solutions for transversely isotropic functionally graded material plates containing elastic inclusion

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Applied Mathematics and Mechanics(English Edition) 2015年第4期36卷 417-426页

作者： bo YANG Weiqiu CHEN Hao jiang ding Department of Civil Engineering Zhejiang Sci-Tech University Department of Engineering Mechanics Zhejiang University Department of Civil Engineering Zhejiang University

Based on the generalized England-Spencer plate theory, the equilibrium of a transversely isotropic functionally graded plate containing an elastic inclusion is studied. The general solutions of the governing equations are expressed by four analytic functions α（ζ）, β（ζ）, φ（ζ）, and ψ（ζ） when no transverse forces are acting on the surfaces of the plate. Axisymmetric problems of a functionally graded circular plate and an infinite func- tionally graded plate containing a circular hole subject to loads applied on the cylindrical boundaries of the plate are firstly investigated. On this basis, the three-dimensional （3D） elasticity solutions are then obtained for a functionally graded infinite plate containing an elastic circular inclusion. When the material is degenerated into the homogeneous one, the present elasticity solutions are exactly the same as the ones obtained based on the plane stress elasticity, thus validating the present analysis in a certain sense.

关键词： functionally graded plate elastic circular inclusion elasticity solution

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Microstructure and mechanical properties of SiC/Inconel 718 joints brazed with CoFeCu3.5Mn3.5Cr high-entropy alloy filler

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钢铁研究学报（英文版） 2024年第10期31卷 2590-2599页

作者： Hong Li bo-jin Li Yun-yue Li Tian-ran ding jian Qin Erika Hodúlová Yi-peng Wang College of Materials Science and Engineering Beijing University of TechnologyBeijing 100124China Zhengzhou Research Institute of Mechanical Engineering Co. Ltd.Zhengzhou 450001HenanChina Institute of Materials and Machine Mechanics Slovak Academy of SciencesBratislava 84513Slovak Republic

Achieving high-quality joining of silicon carbide(SiC)ceramics and Inconel 718 alloy has become a significant challenge for the brazing process,which is strongly dependent on the filler material.A novel composite interlayer consisting of high-entropy alloys(HEAs),HEA/Ni/HEA,was proposed to reduce the formation of intermetallic compounds in the brazed joints of SiC ceramics and Inconel 718 alloy.A reliable SiC/Inconel 718 brazed joint was produced at 1120℃ for 60 *** results showed a significant reduction in the number of NiSi compounds in the brazed *** brazing seam structure near SiC side was filled with face-centered cubic phases with good plasticity and soft Cu-rich phases due to the high-entropy effect,which effectively suppressed the formation of intermetallic *** maximum shear strength of the brazed joint reached 88 MPa,showing excellent tensile *** results provide a valuable basis for improving the joint quality of SiC ceramics and metals by adding high-entropy alloy fillers.

关键词： High-entropy alloy SiC ceramics Inconel 718 alloy Brazing Composite interlayer

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On General Mller Transformation

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Communications in Theoretical Physics 2009年第7期52卷 75-77页

作者： DENG jian-bo HU Xian-Ru ding Ya-Ming XUE De-Sheng FENG Yuan-Ping Department of Physics Lanzhou University Lanzhou 730000 China Department of Physics National University of Singapore Singapore 518000 Singapore

We give a study on the general Moiler transformation and emphatically introduce its differential form. In this paper, a definition of acceleration is given in spacetime language and the inertial reference frame is also settled. With a discussion of the geodesic equations of motion, the differential form of the general MФller transformation at arbitrary direction is presented.

关键词： differential form of general MФller transformation accelerated reference frame

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Dynamic models of technology management capability development based on knowledge diffusion

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Journal of Systems Engineering and Electronics 2011年第2期22卷 228-237页

作者： Weiwei Wu bo Yu jian Wang School of Management Harbin Institute of Technology Harbin 150001 P. R. China . China Aerospace Science & Industry Corporation Beijing 100830 P. R. China

Technology management is recognized as a key for organizations to achieve competitiveness. How to promote an organization’s technology management capability is of great significance in creating efficiencies and achieving a competitive edge. The knowledge essence of technology management capability is introduced and then the correlation between knowledge diffusion and the development of technology management capability is discussed. Further, the basic and extended dynamic models of the development of technology management capability are constructed, and is applied into an enterprise. The results show that the dynamic models can well explain how the knowledge improves the development of technology management capability, and they can be used as an useful tool by an enterprise to promote technology management capability. Finally, the managerial implications of the models are discussed.

关键词： technology management knowledge diffusion dynamic model.

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Neutrino Emission and Cooling of Dark-Matter-Admixed Neutron Stars

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Chinese Physics Letters 2019年第4期36卷 91-94页

作者： Wen-bo ding Zi Yu Yan Xu Chun-jian Liu Tmurbagan Bao College of Mathematics and Physics Bohai University College of Science Nanjing Forestry University Changchun Observatory National Astronomical Observatories Chinese Academy of Sciences College of Physics And Electronic Information Inner Mongolia University for the Nationalities

The GW170817 binary neutron star merger event in 2017 has raised great interest in the theoretical research f neutron stars. The structure and cooling properties of dark-matter-admixed neutron stars are studied here using relativistic mean field theory and cooling theories. The non-self-annihilating dark matter(DM) component is assumed to be ideal fermions, among which the weak interaction is considered. The results show that pulsars J1614-2230, J0348+0432 and EXO 0748-676 may all contain DM with the particle mass of 0.2–0.4 GeV. However,it is found that the effect of DM on neutron star cooling is complicated. Light DM particles favor the fast cooling of neutron stars, and the case is converse for middle massive DM. However, high massive DM particles, around1.0 GeV, make the low mass(around solar mass) neutron star still undergo direct Urca process of nucleons at the core, which leads the DM-admixed stars cool much more quickly than the normal neutron star, and cannot support the direct Urca process with a mass lower than 1.1 times solar mass. Thus, we may conjecture that if small(around solar mass) and super cold(at least surface temperature 5–10 times lower than that of the usual observed data) pulsars are observed, then the star may contain fermionic DM with weak self-interaction.

关键词： binary fermions massive

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Role of CD8^(+) T lymphocyte cells:Interplay with stromal cells in tumor microenvironment

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Acta Pharmaceutica Sinica B 2021年第6期11卷 1365-1378页

作者： Qin Xie jian ding Yi Chen College of Pharmaceutical Sciences Zhejiang UniversityHangZhou 310012China Division of Anti-Tumor Pharmacology Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China University of Chinese Academy of Sciences Beiing 100049China State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China Shanghai Hai He Pharmaceutical Co. Ltd.Shanghai 201203China

CD8^(+) T lymphocytes are pivotal cells in the host response to antitumor *** microenvironments provide the conditions necessary for regulating infiltrating CD8^(+) T cells in favor of tumor survival,including weakening CD8^(+) T cell activation,driving tumor cells to impair immune attack,and recruiting other cells to reprogram the immune *** in tumor microenvironment,stromal cells exert immunosuppressive skills to avoid CD8^(+) T cell *** this review,we explore the universal function and fate decision of infiltrated CD8^(+) T cells and highlight their antitumor response within various stromal architectures in the process of confronting neoantigen-specific tumor ***,this review provides a foundation for the development of antitumor therapy based on CD8^(+)T lymphocyte manipulation.

关键词： CD8+T lymphocyte Stromal cell Tumor microenvironment Immunosuppression Immunotherapy Antitumor

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