In this paper, we report the study of the loading and the release of curcuminoids by bioactive glasses (BG) and mesoporous bioactive glasses (MBG). Through a detailed spectroscopic study, it was possible to determine the amount and the type of molecules released in water and in simulated body fluid (SBF). In particular, curcumin and K2T21 show a good ability to be released in di-keto and keto-e...

Major and minor elements of successively collected 70 Middle Triassic radiolarian bedded cherts from the Mino Belt in central Japan were studied. In order to reveal pre-diagenetic, primary geochemical signatures related to marine biogeochemical cycles, composite data of chert-shale couplets in addition to raw data were examined. The results show that Mn, Cu, Sr, Ba and P were supplied significa...

We prepared a new glass ionomer cement using bioactive CaO-P2O5-SiO2(-MgO) glass and investigated its setting process using FT-IR and MAS NMR analyses. The compressive strengths of the cements depended on the glass composition and a maximum strength of 33.3 +/- 4.7 MPa was obtained using cement with the glass composition of MgO:4.6, CaO:44.9, SiO2:34.2 and P2O5:16.3% in weight. FT-IR analysis s...

The freshwater Buir Lake in Khalkh Gol soum, Dornod aimag, is located (47° 51′ 47″ N, 117° 29″ E) on the border of Mongolia and Inner Mongolia, China. northwest northeast part lake swampy, flat rest part. This research paper reveals lithology some major elements content (SiO2, Al2O3, TiO2, Fe2O3, MgO, K2O, Na2O, MnO P2O5) core sediments their distribution along depth Chemical Index Alteration (...

Tobene is the third exploitation panel of Taiba Phosphate deposits. It divided into five sectors and its started in 2003 after closure Ndomor Keur Mor Fall panels. The phosphate deposit has been object several studies based on lithology, biostratigraphy, geochemistry, petrography; however, few investigations variation thickness layer within Tobène sector have conducted. This study seeks to anal...

Fluoride-containing bioactive glasses and glass-ceramics in the SiO2-P2O5-CaO-CaF2 system are of great interest for dental applications, where precipitation fluorapatite supports tooth remineralization. Fluorine quantification those is key to estimate thermal properties crystallization tendency. This work presents a study on fluorine determination by laser induced breakdown spectroscopy (LIBS) ...

We present a comprehensive molecular dynamics (MD) simulation study of composition-structure trends in a set of 25 glasses of widely spanning compositions from the following four systems of increasing complexity: Na2O-B2O3, Na2O-B2O3-SiO2, Na2O-CaO-SiO2-P2O5, and Na2O-CaO-B2O3-SiO2-P2O5. The simulations involved new B-O and P-O potential parameters developed within the polarizable shell-model f...