Crystalline structure of CaO-P2O5-SiO2 system at 3,000 K were investigated by molecular dynamic simulation. The models with different concentrations P2O5 (5-40 mol%) constructed using Born-Mayer-Huggins potentials. size was from 5,270-5,520 atoms. local environment elements and glassy-network in detail. radial distribution functions (RDFs) showed that the average first nearest neighbor distance...

a highly efficient, simple and green solvent-free protocol for the preparation of poly-substituted quinolines via friedländer hetero-annulation reaction between 2-aminoaryl ketones and carbonyl compounds in the presence of silica-supported p2o5 (p2o5 / sio2) is described. in this method, the title compounds are obtained in high to excellent yields and in short reaction times.

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...

Fe2O3 nanorods exposing (001) and (010) plane as well as Fe2O3 nanosheets exposing (001) plane have been successfully synthesized. Fe2O3 nanosheets exhibit better cycle performance and rate capabilities than that of Fe2O3 nanorods. The discharge capacity of Fe2O3 nanosheets can stabilize at 865 mAh/g at the rate of 0.2 C (1C = 1000 mA/g) and 570 mAh/g at the rate of 1.2 C after 80 cycles, which...

With Fe2O3 as a proof-of-concept, free-standing nanomembrane structure is demonstrated to be highly advantageous to improve the performance of Li-ion batteries. The Fe2O3 nanomembrane electrodes exhibit ultra-long cycling life at high current rates with satisfactory capacity (808 mAh g(-1) after 1000 cycles at 2 C and 530 mAh g(-1) after 3000 cycles at 6 C) as well as repeatable high rate capab...

Pengaruh varietas dan pemupukan fosfor terhadap pertumbuhan serta hasil kedelai (Glycine max). Penelitian ini menggunakan rancangan acak kelompok faktorial yang terdiri dari dua faktor. Faktor pertama adalah (V) : Anjasmoro, Grobogan, Dena 1 2. kedua pemberian pupuk 0 kg P2O5/ha, 20 40 P2O5/ha 60 P2O5/ha. Terdapat 16 kombinasi perlakuan diulang sebanyak tiga kali. Hasil penelitian menunjukkan b...

The Montado is an agro-silvo-pastoral ecosystem characteristic of the Mediterranean region. Pasture productivity and, consequently, possibilities for intensifying livestock production depend on soil fertility. Soil organic matter (SOM) and phosphorus (P2O5) are two indicators evolution fertility in this ecosystem. However, their conventional analytical determination by reference laboratory meth...