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Description of a new species of the genus Rhynchina Guenée, 1854(Lepidoptera, Erebidae, Hypeninae) from Southeastern Tibet,China

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Journal of Forestry Research 2015年第3期26卷 735-738页

作者： Zhao-hui pan hui-Lin Han Institute of Plateau Ecology Agriculture and Animal Husbandry College of Tibet University School of Forestry Northeast Forestry University

A new species of the genus Rhynchina Guenee, 1854, R. tongmaia pan and Han, sp. n. is described from China. This species is compared with a superciaUy similar congener, R. rivuligera Butler, 1889 with illustrations of... 详细信息

关键词： Erebidae Hypeninae Rhynchina Newspecies China

Asymmetry Localized Modes in an Anharmonic Sphalerite-Structure Lattice

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Chinese Physics Letters 2000年第12期17卷 899-901页

作者： ZHOU Guang-hui xia Qing-Lin pan Liu-xian YAN Jia-Ren Department of Physics and Institute of Nonlinear Science Hunan Normal UniversityChangsha 410081 Department of Physics Yiyang Teachers CollegeYiyang 413049 International Center for Materials Physics Chinese Academy of SciencesShenyang 110015

We numerically study the intrinsic localized vibrational modes in a diatomic chain with different masses and alternating force constants between nearest *** model simulates a row of atoms in thedirection of sphalerite-structure *** found that the harmonic and quartic anharmonic terms in the nearest-neighbor interaction potential produce the intrinsic localized modes with frequencies above the optical branch or in the gap of the linear spectrum,the distribution patterns of atom amplitudes are asymmetry with a form of quasi-even-or quasi-odd-parity,and the inclusion of cubic term in the potential lowers the frequencies of the modes and introduces static displacements for the atoms.

关键词： harmonic quasi neighbor

Synthesis and application of bilayer-surfactant-enveloped Fe_3O_4 nanoparticles: water-based bilayer-surfactant-enveloped ferrofluids

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International Journal of Minerals,Metallurgy and Materials 2016年第2期23卷 234-240页

作者： Bai-yi Chen Jian-hui Qiu hui-xia Feng Department of Machine Intelligence and Systems Engineering Faculty of Systems Engineering Akita Prefectural University College of Petrochemical Technology Lanzhou University of Technology

Superparamagnetic carbon-coated Fe3O4 nanoparticles with high magnetization（85 emu·g-（-1）） and high crystallinity were synthesized using polyethylene glycol-4000（PEG（4000）） as a carbon ***3O4 water-based bilayer-surfactant-enveloped ferrofluids were subsequently prepared using sodium oleate and PEG（4000） as *** using X-ray photoelectron spectroscopy,X-ray diffraction,and Fourier-transform infrared spectroscopy indicate that the Fe3O4 nanoparticles with a bilayer surfactant coating retain the inverse spinel-type structure and are successfully coated with sodium oleate and PEG（4000）.Transmission electron microscopy,vibrating sample magnetometry,and particle-size analysis results indicate that the coated Fe3O4 nanoparticles also retain the good saturation magnetization of Fe3O4（79.6 emu·g^-1） and that the particle size of the bilayer-surfactant-enveloped Fe3O4 nanoparticles is 42.97 nm,which is substantially smaller than that of the unmodified Fe3O4 nanoparticles（486.2 nm）.UV-vis and zeta-potential analyses reveal that the ferrofluids does not agglomerate for 120 h at a concentration of 4 g·L^-1,which indicates that the ferrofluids are highly stable.

关键词： magnetic fluids iron oxides nanoparticles bilayers sodium oleate polyethylene glycol

Visual outcome and optical quality after bilateral implantation of aspheric diffractive multifocal, aspheric monofocal and spherical monofocal intraocular lenses: a prospective comparison

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International Journal of Ophthalmology(English edition) 2013年第3期6卷 300-306页

作者： pan-pan Ye xia Li Ke Yao Eye Center the Second Affiliated Hospital College of Medicine Zhejiang University

·AIM: To evaluate the visual function after bilateral implantation of aspheric diffractive multifocal Tecnis ZMA00, aspheric monofocal ZA9003 versus spherical monofocal Akreos Adapt intraocular lenses (IOLs). ·METHODS: Tecnis ZMA00, Tecnis ZA9003 or Akreos Adapt IOLs were bilaterally implanted in 180 eyes from 90 patients. The following parameters were assessed 3 months postoperatively: monocular and binocular uncorrected visual acuity (UCVA) and distance-corrected visual acuity (DCVA) for distance, intermediate and near, spherical aberration (SA), contrast and glare sensitivity, near point refractive power, uncorrected and best corrected near stereoscopic acuity (NSA). Patient satisfaction was assessed by a questionnaire. ·RESULTS:Threemonthspostoperatively,themonocular and binocular UCVA and DCVA at near of Tecnis ZMA00 were significantly better than other two groups. The mean SA for 5.0mm optical zone in Tecnis ZMA00 and Tecnis ZA9003 was significantly lower than that in Akreos Adapt. Mean contrast sensitivity and glare sensitivity were better for Tecnis ZA9003 group than for other two groups. Patients with Tecnis ZMA00 had higher monocular and binocular near point refractive power and uncorrected NSA than monofocal groups. The patients in Tecnis ZMA00 had higher mean values for halo compared with other two groups. ·CONCLUSION: Tecnis ZMA00 provided better near VA and uncorrected NSA and higher near point refractive power than monofocal IOLs and patients were spectacle independent. The IOLs with Tecnis aspheric design improved contrast and glare sensitivity. Patients with Tecnis ZMA00 reported more disturbances on visual phenomena of halo. ·

关键词： intraocular lens aberration visual acuity multifocal

Temporal-Spatial Dichotomous Noises

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Communications in Theoretical Physics 2004年第1X期42卷 55-58页

作者： LIJing-hui HANYin-xia CenterforNonlinearStudies InstituteofAppliedPhysicsandComputationalMathematicsP.O.Box8009(28)Beijing100088China

In this paper, we consider three kinds of temporal-spatial dichotomous noises. Three systems driven by these noises are studied, respectively. The master equations for these systems are derived.

关键词：二叉噪声控制方程随机系统随机响应随机变量非线性物理

Uniform and Semi-uniform Convergence for Discontinuous Skew-product Transformation and Observation

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Acta Mathematica Sinica,English Series 2021年第2期37卷 333-344页

作者： xia pan Zuo Huan ZHENG Zhe ZHOU College of Liberal Arts and Sciences National University of Defense TechnologyChangsha 410073P.R.China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190P.R.China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049P.R.China ollege of Mathematics and Statistics Hainan Normal UniversityHaikou 571158P.R.China

In this paper, for a discontinuous skew-product transformation with the integrable observation function, we obtain uniform ergodic theorem and semi-uniform ergodic theorem. The main assumptions are that discontinuity sets of transformation and observation function are ignorable in some measure-theoretical sense. The theorems extend the classical results which have been established for continuous transformations and continuous observation functions.

关键词： Skew-product transformation uniform ergodicity semi-uniform ergodicity

Dynamic simulation and optimal control strategy for a parallel hybrid hydraulic excavator

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第5期9卷 624-632页

作者： xiao LIN Shuang-xia pan Dong-yun WAN State Key Laboratory of Fluid Power Transmission and Control Zhejiang University Hangzhou 310027 China

The primary focus of this study is to investigate the control strategies of a hybrid system used in hydraulic excavators. First, the structure and evaluation target of hybrid hydraulic excavators are analyzed. Then the dynamic system model including batteries, motor and engine is built as the simulation environment to obtain control results. A so-called multi-work-point dynamic control strategy, which has both closed-loop speed PI (proportion integral) control and direct torque control, is proposed and studied in the simulation model. Simulation results indicate that the hybrid system with this strategy can meet the power demand and achieve better system stability and higher fuel efficiency.

关键词： Hybrid system Hydraulic excavator Multi-work-point dynamic control Direct torque control

Global Weak Entropy Solution of Nonlinear Ideal Reaction Chromatography System and Applications

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Acta Mathematicae Applicatae Sinica 2023年第1期39卷 109-134页

作者： Jing ZHANG Hong-xia LIU Tao pan School of Computer Science and Technology Dongguan University of TechnologyDongguan 523808China Department of Mathematics Jinan UniversityGuangzhou 510632China Department of Optoelectronic Engineering Jinan UniversityGuangzhou 510632China

The ideal reaction chromatography model can be regarded as a semi-coupled system of two hyperbolic partial differential equations, in which, one is a self-closed nonlinear equation for the reactant concentration and another is a linear equation coupling the reactant concentration for the resultant concentration. This paper is concerned with the initial-boundary value problem for the above model. By the characteristic method and the truncation method, we construct the global weak entropy solution of this initial initial-boundary value problem for Riemann type of initial-boundary data. Moreover, as examples, we apply the obtained results to the cases of head-on and wide pulse injections and give the expression of the global weak entropy solution.

关键词： ideal reaction chromatography model reactant and resultant concentration initial-boundary value problem global weak entropy solution head-on injection wide pulse injection

Efficient removal of algae and turbidity from water by a composite coagulant composed of a cationic starch and attapulgite

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Science China(Technological Sciences) 2022年第12期65卷 2979-2989页

作者： JIN JiaSheng xia Wei HU pan YANG Hu State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210023China Quanzhou Institute for Environmental Protection Industry Nanjing UniversityQuanzhou 362000China

Algae and suspended colloidal particles produced high turbidity in water,weakened water purification,and threatened the safety of the water *** this study,a series of composite coagulants(atp-st-CTA)composed of a cationic starch(st-CTA)and attapulgite(ATP)with different fed mass ratios were fabricated by a simple method to coagulate kaolin suspension with initial turbidity of 80.0 NTU and Chlorella suspension with 0.25 mg/L of chlorophyll a(chla),*** transform infrared spectroscopy and scanning electron microscopy investigated the structural characteristics of *** maximum turbidity and chla removal rates of atp-st-CTA were 92.2%and 100.0%,respectively,at natural pH *** effects of the fed mass ratio of st-CTA to ATP in the composites,dose,pH,and coexisting humic acid on the coagulation performance of atp-st-CTA were comprehensively *** on the apparent coagulation behaviors,the zeta potentials of the supernatants after coagulation,and the flocs properties,the coagulation mechanisms of atp-st-CTA were discussed in *** complete charge neutralization due to st-CTA and the enhanced sedimentation by ATP synergistically removed turbidity and algae from the water *** short,atp-st-CTA as a talented material has a notable prospect in applications of water treatment owing to its advantages of environmental friendliness,low cost,and high efficiency.

关键词： composite coagulant cationic starch attapulgite turbidity removal algae removal coagulation mechanism