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Chemical Research in Chinese Universities 2001年第4期17卷 362-367页

作者： HU jing-bo LI Qi-long Department of Chemistry Beijing Normal UniversityBeijing 100875P.R.China

In a 0. 10 mol/L HAc-NaAc buffer solution (pH = 4. 59), a sensitive reduction peak of bleomycin was observed by linear sweep voltammetry at a Co/GC ion implantation modified electrode. The peak potential was-0. 73 V(iw. SCE). The peak current was proportional to the concentration of bleomycin over the range of 5.0 × 10-8-1.0× 10-6 and 1.0× 10-6-1. 0 × 10-5 mol/L with a detection limit of 2.0 × 10-8 mol/L. The electrochemical behavior of the reduction peak of bleomycin at the Co/GC modified electrode was studied by linear sweep and cyclic voltammetry and applied to the determination of bleomycin in urine. This method is simple, rapid and reliable. The reduction process is quasi-reversible. The experiments of AES and XPS showed that Co was surely implanted into the surface of GCE and the depth distribution of Co was in good agreement with Gooses normal distribution; the implanted Co at GCE improved the electrocatalytic activity.

关键词： Co/GC ion implantation modified electrode Electrochemical behavior Linear sweep voltammetry Bleomycin

Microscopic states of Kerr black holes from boundary-bulk correspondence

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Chinese Physics C 2021年第1期45卷 383-391页

作者： jing-bo Wang Institute for Gravitation and Astrophysics College of Physics and Electronic EngineeringXinyang Normal UniversityXinyang 464000China

It was previously claimed by the author that black holes can be considered as topological insulators. both black holes and topological insulators have boundary modes, and the boundary modes can be described by an effective BF theory. In this paper, the boundary modes on the horizons of black holes are analyzed using methods developed for topological insulators. BTZ black holes are analyzed first, and the results are found to be compatible with previous works. The results are then generalized to Kerr black holes, for which new results are obtained: dimensionless right-and left-temperatures can be defined and have well behavior in both the Schwarzschild limit a → 0 and the extremal limit a → M. Upon the Kerr/CFT correspondence, a central charge c = 12 Mr+ can be associated with an arbitrary Kerr black hole. Moreover, the microstates of the Kerr black hole can be identified with the quantum states of this scalar field. From this identification, the number of microstates of the Kerr black hole can be counted, yielding the Bekenstein-Hawking area law for the entropy.

关键词： boundary modes BTZ black hole Kerr black hole

Liouville theorems for an integral system with Poisson kernel on the upper half space

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Science China Mathematics 2016年第7期59卷 1367-1382页

作者： DOU jing bo ZHANG Xiang School of Statistics Xi'an University of Finance and Economics Department of Statistics The Chinese University of Hong Kong School of Mathematics and Computational Science Sun Yat-sen University

We investigate the Liouville theorem for an integral system with Poisson kernel on the upper half space R+n,{u（x） =2/（nωn）∫?R+n（xnf（v（y）））/（|x- y|n）dy, x ∈R+n,v（y） =2/（nωn）∫R+n（xng（u（x）））/（|x- y|n）dx, y ∈?R+n,where n 3, ωn is the volume of the unit ball in Rn. This integral system arises from the Euler-Lagrange equation corresponding to an integral inequality on the upper half space established by Hang et al.（2008）.With natural structure conditions on f and g, we classify the positive solutions of the above system based on the method of moving spheres in integral form and the inequality mentioned above.

关键词： Poisson kernel method of moving spheres regularity Kelvin transformation Liouville theorem

Electron-Phonon Interaction in an Annular Quantum Dot

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Communications in Theoretical Physics 2008年第2期49卷 493-503页

作者： WU bo XIE Hong-jing School of Physics and Electronic Engineering Guangzhou University Guangzhou 510006 China

The confined longitudinal-optical （LO） phonon and surface-optical （SO） phonon modes of a free-standing annular cylindrical quantum dot are derived within the framework of dielectric continuum approximation. It is found that there exist two types of SO phonon modes： top SO （TSO） mode and side SO（SSO） mode in a cylindrical quantum annulus. Numerical calculation on CdS annulus system has been performed. Results reveal that the two different solutions of SSO mode distribute mainly at the inner or outer surfaces of the annulus. The dispersion relations and the coupling intensions of phonons in a quantum annulus are compared with those in a cylindrical quantum dot. It is found that the dispersion relations of the two different structures are similar, but the coupling intension of the phonon-electron interaction in quantum annulus is larger than that in quantum dot. The Hamiltonians describing the free phonon modes and their interactions with electrons in the system are also derived.

关键词： dielectric continuum approximation phonon modes electron-phonon interaction annular quantum dots

Chandra archival study of (U)LIRGs with a double nucleus:binary AGNs?

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Research in Astronomy and Astrophysics 2010年第4期10卷 309-328页

作者： jing-bo Wang Yu Gao Purple Mountain Observatory Chinese Academy of SciencesNanjing 210008China Graduate University of Chinese Academy of Sciences Beijing 100049China

We present our initial results from a study of 14 （U）LIRGs with a doublenucleus （z 〈0.15） and an AGN signature in the Chandra *** goals of our study are to search for more possible cases of binary AGNs and to investigate the X-ray properties and energy sources of these energetic objects,a major effort devoted specifically to searching for binary AGNs from （U）*** studies suggest that Mrk 266 might be a new candidate in hosting binary AGNs supported by X-ray *** analysis shows that most （U）LIRGs are essentially weak X-ray sources and are not dominated by AGNs,due to both the lack of Fe K line detections and weak emission in the hard X-ray *** find evidence for thermal emission with temperature kT ～ 0.7keV in seven nuclear regions,and this component is possibly associated with the nuclear or circumnuclear *** soft and hard X-ray to far-infrared ratios also suggest that most （U）LIRGs are not energetically dominated by ***,this study only provides one additional candidate of binary *** cannot rule out the existence of low luminosity AGNs and thus binary AGNs in all of them,particularly,those highly obscured and spatially unresolved *** of 14 （U）LIRGs,including three previously known binary AGNs and a new candidate Mrk 266,clearly have obvious X-ray counterparts to their double optical/near-IR *** only two out of 14 have one obvious X-ray counterpart ***,Arp 220 and Mrk 273 are not spatially resolved owing to their small nuclear separations （～ 1″）,and no

关键词： galaxies active-galaxies nuclei-infrared galaxies-X-ray galaxies-galaxies individuals(Mrk 266 NGC 7592,IRAS 14348-1447,IRAS 08572+3915,Ⅱ Zw 035)

Dynamical Algebraic Approach to the Modified Jaynes-Cummings Model

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Chinese Physics Letters 2001年第1期18卷 51-53页

作者： XU jing-bo ZOU Xu-bo Zhejiang Institute of Modern Physics and Department of Physics Zhejiang UniversityHangzhou 310027

The modified Jaynes-Cummings model of a single two-level atom placed in the common domain of two cavities or interacting with two quantized modes is studied by a dynamical algebraic *** the help of an SU(2)algebraic structure,we then obtain the eigenvalues,eigenstates,time evolution operator and atomic inversion operator for the *** proceed to investigate the modified Jaynes-Cummings model governed by the Milburn equation and present the exact solution of the Milburn equation.

关键词： equation. method. algebraic

Classification of Positive Solutions to a Divergent Equation on the Upper Half Space

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Acta Mathematica Sinica,English Series 2022年第3期38卷 499-509页

作者： Jin Ge YAO jing bo DOU School of Mathematics and Statistics Shaanxi Normal UniversityXi’an710119P.R.China

In this paper we classify the positive solutions of the divergent equation with Neumann boundary on the upper half space{-div(t^(α)∇u)=t^(β)f(u),(y,t)∈R^(n+1)_(+),lim t→0^(+)t^(α)■u/■t=0 by the method of moving spheres and Kelvin transformations,where n≥1,α>0,β>−1,n−1/n+1β≤αbolev inequality involving divergent operator div(t^(α)∇u)on the upper half space.

关键词： Divergent operator Liouville theorem Neumann boundary method of moving spheres Kelvin transformation

W-hairs of the black holes in three-dimensional spacetime

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Chinese Physics C 2019年第9期43卷 131-134页

作者： jing-bo Wang Institute for Gravitation and Astrophysics College of Physics and Electronic Engineering Xinyang Normal University

In a previous publication,we claimed that a black hole can be considered as a topological insulator.A direct consequence of this claim is that their symmetries should be *** this paper,we give a representation of the near-horizon symmetry algebra of the BTZ black hole using the W1+∞symmetry algebra of the topological insulator in three-dimensional *** on the W1+∞algebra,we count the number of the microstates of the BTZ black holes and obtain the Bekenstein-Hawking entropy.

关键词： BTZ black hole near-horizon symmetry W1+∞symmetry W-hairs

Improved Hardy–Littlewood–Sobolev Inequality on S^(n)under Constraints

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Acta Mathematica Sinica,English Series 2023年第11期39卷 2149-2163页

作者： Yun Yun HU jing bo DOU School of Mathematics and Statistics Shaanxi Normal UniversityXi’an 710119P.R.China

In this paper,we establish an improved Hardy–Littlewood–Sobolev inequality on Snunder higher-order moments ***,by constructing precise test functions,using improved Hardy–Littlewood–Sobolev inequality on S^(n),we show such inequality is almost optimal in critical *** an application,we give a simpler proof of the existence of the maximizer for conformal Hardy–Littlewood–Sobolev inequality.

关键词： Hardy–Littlewood–Sobolev inequality higher-order moments constraint concentration compactness principle almost optimal

Nitrogen application levels based on critical nitrogen absorption regulate processing tomatoes productivity, nitrogen uptake, nitrate distributions, and root growth in Xinjiang, China

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Journal of Arid Land 2023年第10期15卷 1231-1244页

作者： jing bo SHI Wenjuan DIAO Ming Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization of Xinjiang Production and Construction Corps Department of HorticultureAgricultural CollegeShihezi UniversityShihezi 832003China State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China Xi'an University of TechnologyXi'an 710048China

The unreasonable nitrogen(N)supply and low productivity are the main factors restricting the sustainable development of processing *** addition,the mechanism by which the N application strategy affects root growth and nitrate distributions in processing tomatoes remains *** this study,we applied four N application levels to a field(including 0(N0),200(N200),300(N300),and 400(N400)kg/hm^(2))based on the critical N absorption ratio at each growth stage(planting stage to flowering stage:22%;fruit setting stage:24%;red ripening stage:45%;and maturity stage:9%).The results indicated that N300 treatment significantly improved the aboveground dry matter(DM),yield,N uptake,and nitrogen use efficiency(NUE),while N400 treatment increased nitrate nitrogen(NO_(3)^(-)-N)residue in the 20–60 cm soil *** variations of total root dry weight(TRDW)and total root length(TRL)showed a single-peak ***,N300 treatment improved the secondary root parameter of TRDW,while N400 treatment improved the secondary root parameter of *** grey correlation coefficients indicated that root dry weight density(RDWD)in the surface soil(0–20 cm)had the strongest relationship with yield,whereas root length density(RLD)in the middle soil(20–40 cm)had a strong relationship with *** path model indicated that N uptake is a crucial factor affecting aboveground DM,TRDW,and *** above results indicate that N application levels based on critical N absorption improve the production of processing tomatoes by regulating N uptake and root ***,the results of this study provide a theoretical basis for precise N management.

关键词： critical N absorption nitrogen use efficiency(NUE) beta model total root dry weight(TRDW) root growth processing tomato