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Communications in Theoretical Physics 2008年第12期50卷 1348-1350页

作者： wu Hao FAN hong-Yi Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China

Eigenvalue-solution to those Hamiltonians involving non-commutative coordinates is not easily obtained. In this paper we apply the invariant eigen-operator （IEO） method to solving the energy spectrmn of the three-mode harmonic oscillator in non-commutative space with the coordinate operators satisfying cyclic commutative relations, [X1, X2] = [X2, X3]=[X3, X1] = iθ, and this method seems effective and concise.

关键词： non-commutative coordinate space invariant eigen-operator method energy level

Developments of New Sheet Metal Forming Technology and Theory in China

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Acta Metallurgica Sinica(English Letters) 2015年第12期28卷 1452-1470页

作者： Shi-hong Zhang Shuai-Feng Chen Yan Ma hong-wu Song Ming Cheng Institute of Metal Research Chinese Academy of Sciences

Developments of new sheet metal forming technology and theory in China are reviewed in detail in this *** of crystal plasticity on the deformation mechanism of Mg alloy are firstly described, especially its applications on the prediction of sheet forming process. Then, a new macroscopic constitutive model is introduced, which possesses an enhanced description capacity of tension/compression anisotropy and anisotropic hardening. In order to take into account the twinning process of hexagonal close-packed material, a modified hierarchical multi-scale model is also established with adequate accuracy in a shorter computational time. The advanced forming limit of sheet metal, mainly about aluminum alloy, is also investigated. Besides the above theory developments, some new sheet metal forming technologies are reviewed simultaneously. The warm forming technology of Mg alloy is discussed. New processes to form sheet parts and to bend tubes are proposed by using hard granules. On the other hand, a new kind of ultra-high-strength steel based on typical22 Mn B5 by introducing more residual austenite and Cu-rich phase to increase the elongation and strength and its novel forming method that integrates hot stamping and quenching participation are proposed. Progresses in sheet hydroforming,press forging and electromagnetic forming of sheet metal parts are also summarized.

关键词： Sheet forming Crystal plasticity Constitutive modeling Mg alloy UHSS Hot stamping Hydroforming Aluminum alloy

Energy Level of Coupled Harmonic Oscillator Model Born of Heisenberg Ferromagetic Spin Chain Derived by Invariant Eigen-operator Method

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Communications in Theoretical Physics 2008年第5期49卷 1177-1178页

作者： FAN hong-Yi wu Hao Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

Based on the coupled harmonic oscillator model, which is born of Heisenberg ferromagnetic spin chain with nearest-neighbor interactions, we adopt the invariant eigen-operator method to derive its energy level, which p... 详细信息

关键词： energy level spin chain IEO method

Deriving Vibration Modes of Semi-infinite Chain Model by “Invariant Eigen-operator”Method

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Communications in Theoretical Physics 2008年第1期49卷 50-52页

For the first time, we introduce a fully quantum mechanical Hamiltonian for a semi-infinite chain model of atoms. We then derive the vibration modes of this model by virtue of the ＂invariant eigen-operator＂ method i... 详细信息

关键词： semi-infinite chain vibration modes IEO method

Power allocation of cooperative amplify-and-forward communications with multiple relays

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The Journal of China Universities of Posts and Telecommunications 2011年第4期18卷 65-69页

作者： wu Zhuo YANG hong-bing School of Communication and Information Engineering Shanghai University Shanghai 200072 China

Cooperative diversity is one of the most effective ways to mitigate the fading effect of wireless channels and obtain the spatial gain in wireless networks. In this paper, an optimal power allocation （OPA） scheme for a cooperative communication system using the amplify-and-forward （AF） transmit strategy with multiple relay users is proposed by minimizing the bit-error-rate （BER） at the destination under the constraint of the total transmit power of both the source user and the relay users. Simutation resutts indicate that the proposed power allocation method can achieve significant BER performance improvement than using the equal power allocation （EPA） scheme, while still attains low complexity. The system performance is improved significantly with the increasing of the number of relay users at high signal-noise ratio （SNR）. However, at low SNR, the system performance decreases when the relay number increases. Thus, an adaptive relay selection scheme may be used to choose the appropriate relay numbers in different transmission scenarios to provide system performance improvement and keep the power allocation scheme with low complexity.

关键词： cooperative communication AF EPA PA multiple relays BER

Deregulation of c-myc and SV40Tag causing brain tumor in mice

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Chinese Science Bulletin 2007年第24期52卷 3355-3362页

作者： wu hong ZHU hong ZHANG ChengXiang LI HouDa College of Veterinary Yangzhou University Yangzhou 225001 China Key Laboratory of Neuroregeneration Nantong University Nantong 226001 China

Deregulated expressions of both c-myc and simian virus 40 large T antigen (SV40Tag) are consistent features of lots of tumors. To investigate whether the expression of c-myc and SV40Tag in mouse might help develop a model of human tumor, we generated c-myc transgenics by inserting human c-myc gene into pTRE2 of Tet-On system. We obtained conditional expression of SV40Tag transgenics by the Tet-On system from Yangzhou University. Crossing the c-myc transgenic mouse with the SV40Tag transgenic mice to generate bitransgenics we got double-transgenic mice expressing c-myc and SV40Tag by the Tet-On system. After being treated with doxycycline continuously, single-transgenic SV40Tag mice developed brain tumor infrequently (3 of 84, 3.6%) with a long onset (185 d on average). In contrast, double-transgenic c-myc/SV40Tag mice developed brain tumor with a short onset (96 days on average) and a 41% brain tumor incidence rate (7 of 17, 41%). This tumor was assumed to be me- dulloblastoma. Our experiments suggest that deregulated expression of c-myc and SV40Tag in brain might generate a mouse model of human brain tumor that recapitulates some features of human medulloblastoma.

关键词： c-myc SV40Tag 脑瘤转基因成髓细胞瘤

Solving Energy Levels for SSH Hamiltonian Describing Peierls Phase Transition by Virtue of Invariant Eigen-operator Method

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Communications in Theoretical Physics 2008年第3期49卷 759-762页

We show that the recently proposed invariant eigen-operator （IEO） method can be successfully applied to solving energy levels for SSH Hamiltonian describing Peierls phase transition. The electronic energy band of co... 详细信息

关键词： energy level Feierls model invariant eigen-operator method

Spherical harmonics method for neutron transport equation based on unstructured-meshes

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Nuclear Science and Techniques 2004年第6期15卷 335-339页

作者： CAOLiang-Zhi wu-hong-Chun SchoolofEnergyandPowerEngineering Xi＇anJiaotongUniversityXi＇an710049 SchoolofEnergyandPowerEngineering Xi＇anJiaotongUniversityXi＇an710049

Based on a new second-order neutron transport equation, self-adjoint angular flux (SAAF) equation, the spherical harmonics (PN) method for neutron transport equation on unstructured-meshes is derived. The spherical harmonics function is used to expand the angular flux. A set of differential equations about the spatial variable, which are coupled with each other, can be obtained. They are solved iteratively by using the finite element method on un- structured-meshes. A two-dimension transport calculation program is coded according to the model. The numerical results of some benchmark problems demonstrate that this method can give high precision results and avoid the ray effect very well.

关键词：有限元中子传输方程球形谐函数无结构网偏微分方程

Ferrite-based composites and morphology-controlled absorbers

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Rare Metals 2022年第9期41卷 2943-2970页

作者： Yu Mu Zhen-Hui Ma hong-Sheng Liang Li-Min Zhang hong-Jing wu MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary School of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an710072China Department of Physics Beijing Technology and Business UniversityBeijing100037China

The exploration of lightweight and efficient electromagnetic wave(EMW)absorption materials is a crucial focus topic because the human body and precision instruments are exposed to the increasingly serious electromagnetic ***,as the first type of EMW absorption material,is still the indelible superstar in the EMW absorption field due to its unique double loss mechanism,controllable morphology and high *** review briefly introduces the EMW absorption and attenuation mechanism of ferrite-based composite absorbers,including dielectric loss dominated by charge transfer and polarization relaxation,and magnetic loss consisted of eddy current and ***,we comb the advances in synthesis of ferrite *** particular,this paper summarizes the advantages and defects of pure ferrite as EMW absorption *** the approach to tackling the imbalance of impedance matching and highdensity in ferrite is also reviewed,including ion substitution,design of micro-morphology and doping with dielectric loss materials.

关键词： Electromagnetic wave absorption(EMWA) Ferrite Attenuation mechanism Synthetic method Modification

Management strategies in malignant glaucoma secondary to antiglaucoma surgery

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International Journal of Ophthalmology(English edition) 2016年第1期9卷 63-68页

作者： Zuo-hong wu Yu-hong Wang Ying Liu Aier Eye Hospital of wuhan Wuhan 430063 Hubei Province China Aier Eye Hospital of Changsha Changsha 410015 Hunan Province China Wilmer Eye Institute Johns Hopkins University Baltimore 21231 MD USA

AIM：To assess the outcomes of various interventions for malignant glaucoma（MG）.·M ETHODS：A retrospective,comparative analysis of case series were performed on 38 eyes of 35 MG patients treated in Aier Eye Hospital of wuhan between Jan.2009and *** treatments were administered including medical therapy,neodymium：yttriumaluminium-garnet（Nd：YAG）laser posterior capsulotomy and hyaloidotomy as well as 3 surgical *** characteristic,treatment option and outcome of MG in every individual patient were reviewed and analyzed among all patients who were followed up for an average of 27.1±9.1mo.·RESULTS：Four eyes of 3 patients achieved complete resolution with medical ***：YAG laser posterior capsulotomy and hyaloidotomy were performed on 2 eyes,both of which achieved resolution after initial ***-two eyes were given surgical treatments with anterior vitrectomy-reformation of anterior chamber in13 eyes,phacoemulsification-intraocular lens implantation in 10 eyes and phacoemulsification-intraocular lens implantation-anterior vitrectomy in 9 *** of MG was seen in almost all *** mean intraocular pressure decreased from 41.87±9.44 mm Hg at presentation to 15.84±3.73 mm Hg at the last *** mean anterior chamber depth improved from 0.28±0.27 mm to 2.28±0.19 *** eyes with preoperative visual acuity better than counting figure/50 cm had various visual *** occurred in 3 eyes of 3 patients including bleeding at the entry site of vitrectomy into vitreous cavity,corneal endothelial decompensation and allergic to atropine respectively.·CONCLUSION：MG occurs as a result of multiple mechanisms involved simultaneously or *** therapy is advocated as the initial treatment,laser therapy is beneficial in pseudophakic eyes,and different surgical regimen is recommended based on different pathogenesis of MG when non-response occurs to nonsurgical *** can be managed successfully by

关键词： malignant glaucoma pathogenesis medicaltherapy laser therapy surgical interventions