Zhong Ge

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This paper uses Hamiltonian structures to study the problem of the limit of three dimensional elastic models to shell and rod models. In the case of shells, we show that the Hamiltonian structure for a three dimensional elastic body converges, in a sense made precise, to that for a shell model described by a one-director Cosserat surface as the thickness(More)
The molecular regulation of growth of hepatocellular carcinoma (HCC) is yet to be fully clarified. Here we found a significantly higher ratio of phosphorylated β-catenin (phos-β-cat) to β-catenin (β-cat) as an indicator of an activated Wnt signaling, with significantly higher levels of c-myc and transcription factor activating protein-4 (AP-4) and a(More)
This paper shows that when the Riemannian metric on a contact manifold is blown up along the direction orthogonal to the contact distribution, the corresponding harmonic forms rescaled and normalized in the L 2-norms will converge to Rumin's harmonic forms. This proves a conjecture in Gromov [11]. This result can also be reformulated in terms of spectral(More)
This study proposes the concept of the local heat loss coefficient and examines the calculation method for the average heat loss coefficient and the average absorber plate temperature. It also presents an exergy analysis model of flat plate collectors, considering non-uniformity in temperature distribution along the absorber plate. The computation results(More)
The exergy analysis of ORC unit driven by low-temperature waste heat was performed and an intuitive approach with simple impressions was developed to calculate the performances the ORC unit. Parameter optimization was conducted with turbine inlet temperature simplified as the variable and exergy efficiency or power output as the objective function by means(More)
A new criterion DMPC is proposed to evaluate the overall quality of temperature match between two fluids across a heat exchanger. As the criterion DMPC goes up, the unnecessary entropy generation will increase, while the second law efficiency of the heat exchanger will decline, and vice verse. This criterion can also be applied to be the optimization(More)
It is shown that the Hamiltonian structure of the shallow water equations is, in a precise sense, the limit of the Hamiltonian structure for that of a three-dimensional ideal fluid with a free boundary problem as the fluid thickness tends to zero. The procedure fits into an emerging general scheme of convergence of Hamiltonian structures as parameters tend(More)
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