Forest fire models have been widely studied from the context of self-organized criticality and from the ecological properties of the forest and combustion. On the other hand, reaction-diffusion equations have interesting applications in biology and physics. We propose here a model for fire propagation in a forest by using hyperbolic reaction-diffusion equations. The dynamical and thermodynamica...

OBJECTIVES To categorize the radiological presentation of osteosarcoma of the jaws. METHODS Conventional radiographs and CT scans of nine patients with histologically proven osteosarcoma were reviewed. RESULTS Five patients were men and four women, aged between 20 and 51; four lesions were in the maxilla and five in the mandible. Three radiological presentations of osteosarcoma of the jaw w...

Sequent calculus is widely used for formalizing proofs. However, due to the proliferation of data, understanding the proofs of even simple mathematical arguments soon becomes impossible. Graphical user interfaces help in this matter, but since they normally utilize Gentzen’s original notation, some of the problems persist. In this paper, we introduce a number of criteria for proof visualization...

Osteosarcoma (OS) is a highly malignant bone forming tumor characterized by frankly to subtly anaplastic stromal cells with evidence of direct formation of osteoid and/or primitive bone by these cells. Incidence is lower in jaws as compared to long bones (4-13%). They have different biological behaviour but same histopathology. The mean age of occurrence is third to fourth decade, almost a deca...

In this paper, some zeros and non-zeros in the character tables of symmetric groups are displayed partition forms. particular, more self conjugate partitions beside odd permutations heavily investigated.

Lymph node cells from mice infected with live Mycobacterium bovis BCG were fused with BW5147 cells after short-term culturing in vitro. Both mycobacterium- and self-reactive T-cell hybridomas were identified. Some T-cell hybridoma clones displayed dual reactivity to self and to self plus mycobacterial antigen but did so to a different degree, indicating that infection with mycobacteria stimulat...