Cancerous diseases and resulting from bacteria fungi are some of the pressures that humans face. Therefore, development biomaterials resistant to cancerous diseases, bacteria, has become one requirements medical field extend life biomaterial fight pathogens after implanting these materials inside human body. One important used in orthopedics is hydroxyapatite. In this research, Nano substituted...

Strontium-substituted hydroxyapatite (SrHAp) materials are known to actively promote bone formation. However, the optimum level of Sr inclusion needed elicit a physiologically relevant response from cells is unclear and can vary dependent on fabrication process employed. In this work (HAp), SrHAp powders (2, 5 10 wt% (i.e., 1, 2 at%) with respect [Sr/(Sr + Ca) ?100]), were synthesized purity Sr...

Due to its similarity with biological apatite found in vertebrate hard tissues, calcium hydroxyapatite is one of the most investigated materials bone tissue engineering. As not stoichiometric, ion substituted hydroxyapatites attract much atention since they more closely mimic composition natural bone. Although there are many investigations influence foreign ions on structure and physico-chemica...

A new general approach to double nitration of 6,12-di(hetero)aryl-substituted and 6,12-unsubstituted 5,11-dialkyl-5,11-dihydroindolo[3,2-b]carbazoles by acetyl nitrate has been developed to obtain their 2,8-dinitro and 6,12-dinitro derivatives, respectively. A formation of mono-nitro derivatives (at C-2 or C-6) from the same indolo[3,2-b]carbazoles has also been observed in several cases. Reduc...