We

hypothesized that starvation survival is a key microbial property in species selection. This study analyzed starvation-survival behavior over 60 days of species representative of the untreated root canal infection: Fusobacterium nucleatum, Peptostreptococcus anaerobius, Prevotella intermedia and Pseudoramibacter alactolyticus. All species did not survive 1 day in water. In 1% serum, the 4 species could not survive beyond 2-3 weeks. They required a high initial cell density and >= 10% serum to survive the observation period. The results highlight a poor starvation-survival capacity of these 4 species compared with species prevalent in post-treatment infection, which are well equipped to endure starvation Vorinostat and survive in low numbers on minimal serum. These findings point to starvation-survival capacity as a selection factor for microbial participation in post-treatment disease. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009; 108: 129-134)”
“The this website poly2-vinylpyridine and cationic polymer-mixed metal complexes (P2VPMC) have been prepared and characterized by analytical measurement such as: molecular weight, elemental analysis, IR-spectroscopy, NMR-spectroscopy, XRD, and UV. The degree of N-alkylation of poly vinyl pyridine (P-2VP) was 10% determined by chlorine content according to elemental

microanalysis. Through ICP instrument the complexation between P-2VPC and the mixed metal chlorides was proven. The structure of the samples was characterized using X-ray diffraction. It was found that the complexes have amorphous properties. The antitumor activity of this compound was examined in vitro on cell lines. The results reflect pronounced cytotoxicity www.selleckchem.com/products/lcl161.html of P-2VPMC against animal experimental EAC cells line, and human, HeLa, HCT116 and Hep-G2, cell lines. Antitumor activity of the novel compound as applied on mice bearing Ehrlich solid carcinoma, revealed delays

tumor growth compared with untreated animals and decreases tumor volume. The antitumor activity of the P2VPMC might be due to its ability to pass through the membrane and interact with, DNA causing cross-linking action which might be the key factor for great antitumor activity of the P2VPMC compound. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 117: 501-508, 2010″
“In this paper, a transient magnetohydrodynamic (MHD) model of an anode melting pool (AMP) flow (AMPF) is established. Mass equation, momentum equations along axial, radial and azimuthal directions, energy equation, and current continuity equations are considered in the model. In the momentum equations, the influence of electromagnetic force, viscosity force and Marangoni force (anode surface shear stress) are included. Joule heating is also included in the energy equations.