Pain is an important symptom of abdominal disease. Its position and characteristics give important clues to the likely causes. The types of pains previously described tend to have characteristic positions which can help point to their origin.By far the most common cause of abdominal pain in the general population is irritable bowel syndrome, or IBS.
Lithium fluoride, the lithium salt of hydrofluoric acid, may be used as an adjuvant in antibiotic therapy. Lithium fluoride is useful for the development of nanostructures and nanolayers.
Polyvinylidene fluoride. Polyvinylidene fluoride, or polyvinylidene difluoride, (PVDF) is a highly non-reactive thermoplastic fluoropolymer produced by the polymerization of vinylidene difluoride. PVDF is a specialty plastic used in applications requiring the highest purity, as well as resistance to solvents, acids and bases. Compared to other fluoropolymers, like polytetrafluoroethylene (Teflon), PVDF has a low density (1.78 g/cm 3).