Guangsheng Wei

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Not only is the expression of CXCR4 on breast cancers a key determinant of tumor metastasis, CXCL12 exhibiting peak levels of constitutive expression in organs representing the first destinations of cancer metastasis, but is proposed to be also essential for the organ-specific metastatic process. In this study, the expressions of CXCR4 and CXCL12 were(More)
BACKGROUND Since there is high local failure and poor survival for unresectable esophageal squamous cell carcinoma (ESCC), the necessity of elective node irradiation is controversial. The purpose of this study was to investigate the failure patterns and survival in patients with locally advanced ESCC receiving involved-field irradiation (IFI). METHODS A(More)
A new characterization of the positive self-adjoint extensions of symmetric operators, T0, is presented, which is based on the Friedrichs extension of T0, a direct sum decomposition of domain of the adjoint T ∗ 0 and the boundary mapping of T ∗ 0 . In applying this result to ordinary differential equations, we characterize all positive self-adjoint(More)
In this paper we are concerned with the inverse spectral problems for energy-dependent Sturm-Liouville problems (that is, differential pencils) defined on interval [0, 1] with two potentials known on a subinterval [a1, a2] ⊂ [0, 1]. We prove that the potentials on the entire interval [0, 1] and the boundary condition at x = 1 are uniquely determined in(More)
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