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您的检索式：作者名="CHENHanlin"
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| 1 | PERSISTENT HOMOCLINIC ORBITS FOR A PERTURBED CUBIC-QUINTIC NONLINEAR SCHROEDINGER EQUATION显示文摘In this paper ,the existence of homoclinic orbits,for a perturbed cubic-quintic nonlinear Schroedinger equation with even periodic boundary conditions ,under the geralized parameters conditions is established.More specifically,we combine geometric singular perturbation theory,with ,Melnikov analysis and integrable theory to prove the persistences of homoclinic orbits. | GuoBoling ChenHanlin | 2002 | Journal of Partial Differential Equations2002，15，2： | 2 |
| 2 | Discovery and Genetic Mechanism of Basic Granulite in the Altay Orogenic Belt, Xinjiang, NW China显示文摘Altay granulite (AG), which represents the product of high-grade metamorphism in the lower crust, was newly found in thc Wuqiagou area, Fuyun County in the Altay orogenic belt, Northwest China. It is composed mainly of hypersthene, augite, basic plagioclase, amphibole and brown biotite. Its mineral compositions of amphibole and biotite are rich in Mg/(Mg+Fe2+) and Ti. Geochemically, the AG is enriched in Mg/(Mg+Fe2+) and A12O3, and poor in CaO, with depletion of U, Th, K and Rb contents. Furthermore, geochemical data reflect that the protolith of the AG is igneousgenetic calc-alkalinc basalt formed under an island arc environment. The AG has ∑REE of 92.38-96.58 ppm and enriched LREE model with weak positive Eu anomaly of 1.09-1.15. In the MORB normalized spider diagram, the AG shows tridoming pattern with a strong negative Nb anomaly and medium negative P and Ti anomalies, reflecting that the AG has tectonic relation with subduction or subduction-related materials. The P-Tconditions of peak metamorphism of the AG arc 750-780°C and >0.6-0.7 GPa. Retrograde metamorphism implies that the protolith of the Altay granulite might undergo a metamorphic process along a clockwise P-T trajectory. Thereforc, thc formation and evolution of thc AG may have a genetic association with continental collision/orogeny and the AG was taken into the Late Paleozoic meta-strata by way of tectonic emplacement. | LIZilong CHENHanlin YANGShufeng DONGChuanwan XIAOWenjiao LIJiliang YEYing WANGJian | 2004 | Acta Geologica Sinica(English Edition)2004，78，1： | 2 |
| 3 | A symmetry-related sequence-structure relation of proteins显示文摘Proteins have regular tertiary structures but irregular amino acid sequences. This made it very difficult to decode the structural information in the protein sequences. Here we demonstrate that many small α protein domains have hidden sequence symmetries characteristic of their pseudo-symmetric tertiary structures. We also present a modified method of recurrent plot to reveal this kind of the hidden sequence symmetry. The results may enable us to understand part of the relations between protein sequences and their tertiary structures. | XURuizhen LIMingfen CHENHanlin HUANGYanzhao XIAOYi | 2005 | Chinese Science Bulletin2005，50，6： | 1 |
| 4 | HOMOCLINIC ORBIT IN A SIX DIMENSIONAL MODEL OF A PERTURBED HIGHER-ORDER NLS EQUATION显示文摘In this paper,the perturbed higher-order NLS equation with periodic boundary condition is considered. The existence of the homoclinic orbits for the truncation equation is established by Melnikov analysis and geometric singular perturbation theory. | GuoBoling ChenHanlin | 2003 | Journal of Partial Differential Equations2003，16，1： | 0 |
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