Poly(N-vinyl pyrrolidone) (PVP), poly(2-methyl-2-oxazoline) (PMOZ), poly(2-ethyl-2-oxazoline) (PEOZ), poly(2-n-propyl-2-oxazoline) (PnPOZ), and poly(2-isopropyl-2-oxazoline) (PiPOZ) were used to prepare solid dispersions with ibuprofen (IB), a model poorly-water soluble drug. Dispersions, prepared by solvent evaporation, investigated using powder X-ray diffractometry, differential scanning calo...

In the simplest case, vinyl monomers are named by using the prefix poly in front of the monomer name, e.g. polyethylene. When a monomer name consists of more than one word, or if the name is preceded by a number or letter, the monomer name is placed in parentheses after the word poly, e.g. poly(acrylic acid) or poly(methyl methacrylate). In general, common names of monomers are used rather than...

In the crystal of the title coordination polymer, [Na(C(8)H(5)N(2)O(6))](n), the Na(I) ion is linked to five nearby anions. Their bonding modes are three monodentate carboxyl-ate O atoms, one O,O'-bidentate carboxyl-ate group and one O,O'-bidentate nitro group. This results in an irregular NaO(7) coordination geometry for the metal ion. This connectivity leads to a layered network propagating i...

th dentistry. Early 20 century sawintroduction of various newer materials like stainless steel, cobalt chromium alloys, acrylic resins(heat cure and self-cure) as DB materials.However, acrylic resin seems to be a material, which got more attention because it fulfils many of the desired properties like ease of processing, favourable working characteristics, accurate fit, stability in oral enviro...

A low-intensity (6 W) light-emitting diode (LED) effectively activated an organotellurium chain transfer agent and the dormant species, promoting well-controlled radical polymerization. The use of the LED provided many advantages over the previously reported high-intensity Hg lamp, including high energy efficiency during the polymerization, and easy availability of the low-cost light source. St...

Chemical and enzymatic methods were used to synthesize a transition (AT to GC) and a transversion (AT to TA) at a lac operator site known to interact with lac repressor through the thymine 5 methyl group. These operators also contained a poly(dA) . poly(dT) tail 8 to 12 base pairs in length at one end. Results suggest that the steric constraints of lac repressor relative to the position of the ...

Many individuals suffer from myopia or hyperopia and astigmatism owing to the refractive defects of eye optics because use inappropriate contact lenses. This study dealt with three polymers Poly(methyl methacrylate) (PMMA), Poly(Hydroxyl (PHEMA), Poly(glycidyl (PGMA) doping them TiO2 nanoparticles evaluate difference between effect each lens on human eye. The NPs were prepared in this work by s...