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Exact solution of Schrdinger equation with q-deformed quantum potentials using Nikiforov–Uvarov method

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Chinese Physics B 2013年第11期22卷 166-173页

作者： Falaye B.j. Oyewumi k.j. Abbas m. Theoretical Physics Section Department of Physics University of Ilorin Physics Department Kebbi State University of Science and Technology

In this paper, we present the exact solution of the one-dimensional Schrrdinger equation for the q-deformed quantum potentials via the Nikiforov-Uvarov method. The eigenvalues and eigenfunctions of these potentials are obtained via this method. The energy equations and the corresponding wave functions for some special cases of these potentials are briefly discussed. The PT-symmetry and Hermiticity for these potentials are also discussed.

关键词： Schrōdinger equation q-deformed quantum potential Woods-Saxon potential Nikiforov-Uvarovmethod

Overview of surface ozone variability in East Asia-North Pacific region during IGAC/APARE(1994—1996)

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journal of Environmental Sciences 2004年第4期16卷 599-609页

作者： k.S. Lam T.j.Wang T. Wang j. Tang . y.kajii C.m. Liu S.G. Shim Environmental Engineering Unit Department of Civil and Structural Engineering The Hong Kong Polytechnic University Hong Kong Department of Atmospheric Science Nanjing University Nanjing 210093 China Chinese Academy of meteorological Science Beijing 100081 China Research Center for Advanced Science and Technology University of Tokyo Tokyo Japan Department of Atmospheric Science "National" Taiwan University Taipei Taiwan China Global Environmental Research Center Korea Institute of Science and Technology Seoul South Korea

Surface ozone(O\-3) was measured at Oki Island(japan), Cheju Island(South korea), Lanyu Island(Taiwan Province, China), Cape D'Aguilar(Hong kong SAR) and Lin'an, Longfenshan, Waliguan(China mainland) during january 1994—December 1996 as a component of IGAC/APARE(International Global Atmospheric Chemistry/East Asia-North Pacific Regional Experiment). This paper gave a joint discussion on the observational results at these stations over the study region. Investigations showed that the average of surface O 3 mixing ratios at the seven sites are 47.9±15.8, 48.1±17.9, 30.2±16.4, 31.6±17.5, 36.3±17.5, 34.8±11.5 and 48.2±9.5 ppbv, respectively. Significant diurnal variations of surface O 3 have been observed at Oki, Cheju, D’Aguilar, Lin'an and Longfenshan. Their annual averaged diurnal differences range from 8 to 23 ppbv and differ in each season. Surface O 3 at Lanyu and Waliguan do not show strong diurnal variability. Seasonal cycles of surface O 3 showed difference at the temperate and the subtropical remote sites. Oki has a summer minimum-spring maximum, while Lanyu has a summer minimum-autumn maximum. The suburban sites at D'Aguilar and Lin'an report high-level O 3 in autumn and low level O 3 in summer. Surface O 3 remains high in autumn and low in winter at the rural site Longfenshan. For the global background station Waliguan, surface O 3 exhibits a broad spring-summer maximum and autumn-winter minimum. The backward air trajectories to these sites have shown different pathways of long-range transport of air pollution from East Asia Continent to North Pacific Ocean. Surface O 3 was found to be strongly and positively correlated with CO at Oki and Lanyu, especially in spring and autumn, reflecting the substantial photochemical buildup of O\-3 on a regional scale. It is believed that the regional sources of pollution in East Asia have enhanced the average surface O 3 concentrations in the background atmosphere of North Pacific.

关键词： surface ozone trajectory transport photochemistry

Effects of Rare Earth Elements on the Characteristics of Low Temperature Plasma Nitrocarburized martensitic Stainless Steel

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journal of materials Science & Technology 2012年第11期28卷 1046-1052页

作者： R.L.Lju y.j.Qiao m.F.yan y.D.Fu College of materials Science and Chemical Engineering Harbin Engineering UniversityHarbin 150001China School of materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Low temperature plasma nitrocarburizing of 17-4PH martensitic stainless steel was conducted at 430 ℃ with and without rare earth （RE） addition. The microstructure, kinetics, microhardness, wear behavior as well as corrosion resistance of the modified layer were studied by optical microscopy, X-ray diffraction, Vickers microhardness tester, pin-on-disc tribometer and potentiodynamic polarization tests. The results show that the thickness of plasma RE nitrocarburized layer is much thicker than that formed by nitrocarburizing without RE addition. The incorporation of RE does not change the kind of the phases and the nitrocarburized layer consists mainly of nitrogen and carbon expanded martensite （aN）, γ-Fe4N and a-Fe with a trace of CrN phases. The surface microhardness of plasma nitrocarburized layer can be increased by 100 HV after RE addition. Wear resistance of the specimen can be apparently improved by low temperature plasma nitrocarburizing with and without RE addition and without sacrificing its corrosion resistance. Wear reduction effect of low temperature plasma nitrocarburizing with RE addition is better than that of the conventional one.

关键词： Stainless steel Low temperature Plasma nitrocarburizing Rare earth (RE) Wear and friction

Prediction of flow patterns during silo discharges using a finite element approach and its preliminary experimental verification

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Particuology 2015年第1期13卷 42-49页

作者： S.Ding H.Li j.y.Ooi j.m.Rotter Faculty of Science and Engineering University of AgderGrimstadand Tel-TekPorsgrunnNorway School of material & mineral Resources Xi'an University of Architecture & Technology Institute for Infrastructure and Environment School of EngineeringUniversity of Edinburgh

Obtaining a reliable discharge of particulate solids from a storage silo is a prerequisite to securing oper- ational adequacy in solids handling processes. If a silo is poorly designed, an unreliable interrupted discharge often occurs. In this study, an in-house finite element （FE） program was modified to predict the particulate solids flow patterns during discharges from silos, and the effect of a double-cone insert on such flow patterns. In FE modeling, a Eulerian approach was adopted with an assumption of steady-state flow-a state that greatly facilitated investigations on the effects of double-cone inserts on the flow of particulate solids. Predictions were carried out on whether the discharge was in mass flow or funnel flow, associated with the inclination angle of the silo＇s hopper. Predicted results were in agreement with the jenike Chart, and proved that an upper lateral pressure ratio value gave a better critical hopper half angle to achieve mass flow （EN 1991-4, 2006）. The shape and size of the stagnant zone were further discussed to address the flow channel boundary between the flowing and static solids if the discharge was in a funnel pattern. Results also showed the effects of a double-cone insert on the flow patterns which con- verted silos from funnel flow to mass flow up to a certain hopper inclination angle and would improve the flow pattern even for shallower angles. Experiments were carried out to verify some of the predicted results. Some qualitative comparisons were made between the predicted results and experimental mea- surements, which indicated that further efforts are needed in predicting the shape of the stagnant zone （flow channel boundary） during funnel flow discharges.

关键词： Discharge pattern Flow boundary Double-cone insert FE analysis Preliminary verification

Trans-scale mechanics: looking for the missing links between continuum and micro/nanoscopic reality

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Acta mechanica Sinica 2008年第2期24卷 111-126页

作者： y.L.Bai H.y.Wang m.F.Xia F.j.ke State key Laboratory of Non-linear mechanics (LNm) Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China State key Laboratory of Non-linear mechanics (LNm) Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Department of Physics Peking University Beijing 100871 China State key Laboratory of Non-linear mechanics (LNm) Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Department of Applied Physics Beihang University Beijing 100083 China

Problems involving coupled multiple space and time scales offer a real challenge for conventional frame-works of either particle or continuum mechanics. In this paper, four cases studies （shear band formation in bulk.metallic glasses, spallation resulting from stress wave, interaction between a probe tip and sample, the simulation of nanoindentation with molecular statistical thermodynamics） are provided to illustrate the three levels of trans-scale problems （problems due to various physical mechanisms at macro-level, problems due to micro-structural evolution at macro/micro-level, problems due to the coupling of atoms/ molecules and a finite size body at micro/nano-level） and their formulations. Accordingly, non-equilibrium statistical mechanics, coupled trans-scale equations and simultaneous solutions, and trans-scale algorithms based on atomic/molecular interaction are suggested as the three possible modes of trans-scale mechanics.

关键词： multi-scale missing-links Continuum mechanics Particle mechanics Trans-scale mechanics

mapping of three QTLs for seed setting and analysis on the candidate gene for qSS-1 in rice(Oryza sativa L.)

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journal of Integrative Agriculture 2016年第4期15卷 735-743页

作者： Elsheikh y m Ahmed zhanG yan-pei yU jian-ping Rashid m A Rehman zhanG zhan-ying zhanG Hong-liang LI jin-jie LI Zi-chao key Laboratory of Crop Heterosis and Utilization Ministry of Education Beijing Key Laboratory of Crop Genetic Improvement China Agricultural University

The lower seed setting is one of the major hindrances which face grain yield in rice. One of the main reasons to cause low spikelet fertility （seed setting） is male sterility or pollen abortion. Notably, pollen abortion has been frequently observed in advanced progenies of rice. In the present study, 149 BC2F6 individuals with significant segregation in spikelet fertility were generated from the cross between N040212 （indica） and Nipponbare （japonica） and used for primary gene mapping. Three QTLs, qSS-1, qSS-7 and qSS-9 at chromosomes 1, 7 and 9, respectively, were found to be associated with seed setting. The recombinant analysis and the physical mapping information from publicly available resources exhibited that the qSS-1, qSS-7 and qSS-9 loci were mapped to an interval of 188, 701 and 3741 kb, respectively. The seed setting responsible for QTL qSS-1 was further fine mapped to 93.5 kb by using BC2F7 population of 1 849 individuals. There are 16 possible putative genes in this 93.5 kb region. Pollen vitality tests and artificial pollination indicated that the male gamete has abnormal pollen while the female gamete was normal. These data showed that low seed setting rate relative to qSS-1 may be caused by abnormal pollen grains. These results will be useful for cloning, functional analysis of the target gene governing spikelet fertility （seed setting） and understanding the genetic bases of pollen sterility.

关键词： rice (Oryza sativa L.) QTL mapping seed setting pollen sterility

Unique microstructure and thermal insulation property of a novel waste-utilized foam ceramic

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journal of materials Science & Technology 2020年第13期47卷 175-179页

作者： F.H.kuang S.m.Wang C.Gao H.B.zhang R.k.Ren j.L.Ren j.Tong y.m.Liu Department of materials Science and Engineering University of Science&Technology BeijingBeijing 100083China China Building materials Academy Beijing 100024China China Institute for Radiation Protection Taiyuan 030006China

A characteristic CaO-Al2O3-SiO2 based foam ceramic was prepared by melt-foaming with solid wastes as main raw *** similarity to sandwich hole wall microstructure of this novel thermal insulating material was presented and the relationships between this unique microstructure and porosity,density,thermal conductivity and strength were *** the measured and theoretical values with that of the traditional foam ceramic,it can be found that,for the matching of fine skeleton with hole wall,this original sandwich structure can reduce thermal conductivity and increase flexural strength effectively.

关键词： Foam ceramic Density Porosity Strength Thermal conductivity Sandwich structure

Two-component modeling for non-Newtonian nanofluid slip flow and heat transfer over sheet: Lie group approach

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Applied mathematics and mechanics(English Edition) 2016年第10期37卷 1325-1340页

作者： P.RANA m.j.UDDIN y.GUPTA A.I.m.ISmAIL Department of mathematics Jaypee Institute of Information Technology School of mathematical Sciences Universiti Sains Malaysia Department of mathematics American International University-Bangladesh

The present paper deals with the multiple solutions and their stability analy- sis of non-Newtonian micropolar nanofluid slip flow past a shrinking sheet in the presence of a passively controlled nanoparticle boundary condition. The Lie group transformation is used to find the similarity transformations which transform the governing transport equations to a system of coupled ordinary differential equations with boundary condi- tions. These coupled set of ordinary differential equation is then solved using the Runge- kutta-Fehlberg fourth-fifth order （RkF45） method and the ode15s solver in mATLAB. For stability analysis, the eigenvalue problem is solved to check the physically realizable solution. The upper branch is found to be stable, whereas the lower branch is unsta- ble. The critical values （turning points） for suction （0 〈 sc 〈 s） and the shrinking parameter （Xc 〈 X 〈 0） are also shown graphically for both no-slip and multiple-slip conditions. multiple regression analysis for the stable solution is carried out to inves- tigate the impact of various pertinent parameters on heat transfer rates, The Nusselt number is found to be a decreasing function of the thermophoresis and Brownian motion parameters.

关键词： micropolar nanofluid stability multiple-slip Lie group mATLAB

Synchrotron radiation intensity and energy of runaway electrons in EAST tok.mak

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Chinese Physics B 2018年第5期27卷 385-389页

作者： y k zhang R j Zhou L Q Hu m W Chen y Chao1,2 EAST team Institute of Plasma Physics Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei 230031 China University of Science and Technology of China Hefei 230026 China

A detailed analysis of the synchrotron radiation intensity and energy of runaway electrons is presented for the Experimental Advanced Superconducting Tok.mak（EAST）. In order to make the energy of the calculated runaway electrons more accurate, we take the Shafranov shift into account. The results of the analysis show that the synchrotron radiation intensity and energy of runaway electrons did not reach the maximum at the same time. The energy of the runaway electrons reached the maximum first, and then the synchrotron radiation intensity of the runaway electrons reached the *** also analyze the runaway electrons density, and find that the density of runaway electrons continuously increased. For this reason, although the energy of the runaway electrons dropped but the synchrotron radiation intensity of the runaway electrons would continue rising for a while.

关键词： tok.mak runaway electron synchrotron radiation