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A hierarchical representation for heterogeneous object modeling is presented in this paper. To model a heterogeneous object, Boundary representation is used for geometry representation, and a novel Heterogeneous Feature Tree (HFT) structure is proposed to represent the material distributions. HFT structure hierarchically organizes the material variation(More)
AIM To identify and characterize cancer stem cells (CSC) in glioblastoma multiforme (GBM). METHODS Four-micrometer thick formalin-fixed paraffin-embedded GBM samples from six patients underwent 3,3-diaminobenzidine (DAB) and immunofluorescent (IF) immunohistochemical (IHC) staining for the embryonic stem cell (ESC) markers NANOG, OCT4, SALL4, SOX2, and(More)
Isolated paralysis of the marginal mandibular branch of the facial nerve results in an asymmetrical smile with elevation of the lower lip on the affected side. We discuss the surgical options for its correction and present a series of 26 patients who underwent either botulinum toxin injection, anterior belly of digastric transfer or free extensor digitorum(More)
BACKGROUND Mucosal squamous cell carcinoma of the head and neck is a disease of high mortality and morbidity. Interactions between the squamous cell carcinoma and the host's local immunity, and how the latter contributes to the biological behavior of the tumor are unclear. In vivo studies have demonstrated sequential mast cell infiltration and degranulation(More)
This paper presents a new method for modeling cloth deformation. The proposed approach is a constrained finite element method. We successfully introduce a geometric constraint into the geometrical, non-linear, finite element equations. The assumed constraint is that lengths of all threads in a cloth object remain unchanged after deformation. Using the(More)