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| 1 | Inhibition and recovery of nitrification in treating real coal gasification wastewater with moving bed biofilm reactor显示文摘Moving bed biofilm reactor (MBBR) was used to treat real coal gasification wastewater. Nitrification of the MBBR was inhibited almost completely during start-up period. Sudden increase of influent total NH 3 concentration was the main factor inducing nitrification inhibition. Increasing DO concentration in the bulk liquid (from 2 to 3 mg/L) had little effect on nitrification recovery. Nitrification of the MBBR recovered partially by the addition of nitrifying sludge into the reactor and almost ceased within 5 days. Nitrification ratio of the MBBR achieved 65% within 12 days by increasing dilute ratio of the influent wastewater with tap water. The ratio of nitrification decreased to 25% when influent COD concentration increased from 650 to 1000 mg/L after nitrification recovery and recovered 70% for another 4 days. | Huiqiang Li Hongjun Han Maoan Du Wei Wang | 2011 | Journal of Environmental Sciences2011，23，4： | 34 |
| 2 | Small-amplitude limit cycles of polynomial Linard systems显示文摘In this paper,we study the number of limit cycles appeared in Hopf bifurcations of a Linard system with multiple parameters.As an application to some polynomial Li'enard systems of the form x=y,y=gm(x)-fn(x)y,we obtain a new lower bound of maximal number of limit cycles which appear in Hopf bifurcation for arbitrary degrees m and n. | HAN MaoAn TIAN Yun YU Pei | 2013 | Science China Mathematics2013，56，8： | 3 |
| 3 | On the Number of Limit Cycles in Small Perturbations of a Piecewise Linear Hamiltonian System with a Heteroclinic Loop显示文摘In this paper, the authors consider limit cycle bifurcations for a kind of nonsmooth polynomial differential systems by perturbing a piecewise linear Hamiltonian system with a center at the origin and a heteroclinic loop around the origin. When the degree of perturbing polynomial terms is n(n ≥ 1), it is obtained that n limit cycles can appear near the origin and the heteroclinic loop respectively by using the first Melnikov function of piecewise near-Hamiltonian systems, and that there are at most n + [(n+1)/2] limit cycles bifurcating from the periodic annulus between the center and the heteroclinic loop up to the first order in ε. Especially, for n = 1, 2, 3 and 4, a precise result on the maximal number of zeros of the first Melnikov function is derived. | Feng LIANG Maoan HAN | 2016 | Chinese Annals of Mathematics,Series B2016，37，2： | 3 |
| 4 | Bifurcations of Invariant Tori and Subharmonic Solutions of Singularly Perturbed System显示文摘这篇论文处理为一个非自治的不可思议地使不安的系统在快动力学从限制周期产生的次谐波解决方案和 invarianttori 的分叉。把地图,一系列发作转变和积分的理论基于 Poincare 歧管,为不变的岩山 i 的存在的条件被获得,并且次谐波答案的 saddle-nodebifurcations 被学习。 | Zhiyong YE Maoan HAN | 2007 | Chinese Annals of Mathematics,Series B2007，28，2： | 3 |
| 5 | Influence of feedback controls on an autonomous Lotka–Volterra competitive system with infinite delays显示文摘 | Zhong Li Maoan Han Fengde Chen | 2013 | Nonlinear Analysis: Real World Applications2013，，1： | 2 |
| 6 | GLOBAL STABILITY OF A STAGE-STRUCTURED PREDATOR-PREY MODEL WITH MODIFIED LESLIE-GOWER AND HOLLING-TYPE II SCHEMES显示文摘 | ZHONG LI | 2012 | International Journal of Biomathematics2012，5，6： | 2 |
| 7 | BIFURCATIONS OF LIMIT CYCLES FROM A HETEROCLINIC CYCLE OF HAMILTONIAN SYSTEMS显示文摘§1.NormalFormsofDisplacementFunctionsConsideraplanarC∞systemoftheformx=f(x)+λf0(x,δ,λ)≡f(x,δ,λ),(1.1)wherex∈R2,λ∈R,δ∈Rm,andtr... | HAN MAOAN * | 1998 | Chinese Annals of Mathematics,Series B1998，19，2： | 2 |
| 8 | Stability and Hopf bifurcation analysis on a simplified BAM neural network with delays显示文摘 | Yongli Song Maoan Han Junjie Wei | 2004 | Physica D: Nonlinear Phenomena2004，，3： | 2 |
| 9 | Stability and Hopf bifurcations in a competitive Lotka-Volterra system with two delays显示文摘 | SONG Yongli HAN Maoan PENG Yahong | 2004 | Chaos Solitons & Fractals2004，22，： | 1 |
| 10 | Stability and Hopf bifurcation for an epidemic disease model with delay 显示文摘 | Chengjun Sun Yiping Lin Maoan Han | 2006 | Chaos Solitons and Fractals2006，30，： | 1 |
| 11 | Chaos and Hopf bifurcation analysis for a two species predator-prey system with prey refuge and diffusion显示文摘 | LIU Xia HAN Maoan | | 0，，： | 1 |
| 12 | Some new delay integral inequality and their applications 显示文摘 | LI Weinian HAN Maoan MENG Fanwei | 2005 | J Comput Appl Math2005，180，： | 1 |
| 13 | Chaos and Hopf bifurcation analysis for a two species predator-prey system with prey refuge and diffusion显示文摘 | Liu Xia Han Maoan | 2011 | Nonlinear Analysis: Real World Applications2011，12，2： | 1 |
| 14 | Global Bifurcation of a Perturbed Double-Homoclinic Loop显示文摘这篇论文与不安处理一种第四个度系统。由使用多参数不安理论的方法;质的分析,系统能让六限制周期,这被证明。 | Desheng SHANG Maoan HAN | 2006 | Chinese Annals of Mathematics,Series B2006，27，4： | 1 |
| 15 | Stability and Hopf bifurcation analysis on a simplified BAM neural network with delays显示文摘 | Song Yongli Han Maoan Wei Junjie | 2005 | Physica D2005，200，2005： | 1 |
| 16 | Electrokinetic remediation and microbial community shiftof p-cyclodextrin-dissolved petroleum hydrocarbon-contaminated soil显示文摘 | Wan Chunli Du Maoan Lee Duujong | 2011 | Applied Microbiology andBiotechnology2011，89，6： | 1 |
| 17 | Dynamics in a ratio-dependent predator-prey model with predator harvesting显示文摘 | XIAO Dongmei Ll Wenxiao HAN Maoan | 2006 | Journal of Mathematical Analysis and Application2006，324，： | 1 |
| 18 | Limit cycles bi-furcations in near -haniltonian systems by perturbing anilpotent center 显示文摘 | Han Maoan Jiang Jiao Zhu Huaiping | 2008 | International Journal of Bifurcation andChaos2008，18，10： | 1 |
| 19 | On Hopf cyclicity of pianar systems 显示文摘 | Han Maoan | 2000 | J MathAnal Appl2000，245，2： | 1 |
| 20 | Improved volatilefatty acids production from proteins of sewage sludge withanthraquinone-2,6-disulfonate(AQDS)under anaerobic condition显示文摘 | Yang Xue Du Maoan Lee Duu-Jong | 2011 | Bioresource Technology2011，103，1： | 1 |
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