A system, method and computer program product for minimizing risks associated with meteorology dependent activity. A polycrystalline silicon solar cell in accordance with the present invention performs crystallization-annealing amorphous silicon with a metal catalyst so as to reduce a crystallization temperature. In various aspects the present design mixes the fuel and oxidant streams prior to entering a combustion chamber. When the document is moved and a pre-shot document image is aligned with the positioning mark, the image pickup device is activated by the positioning program to shoot the document, thereby obtaining a document image. The in vitro model of infection is useful in evaluating compounds for activity against latent mycobacteria.