Composites of hydroxyapatite (HaP) and highly ordered large pore mesoporous silica molecular sieves such as, Al-SBA-15 and Al-MCM-41 (denoted as SBA-15 and MCM-41, respectively) were developed, characterized by XRD, BET, FTIR, HRTEM and NMR-MAS, and applied to fluoride retention from contaminated water. The proposed procedure by a new route to prepare the HaP/SBA-15 and HaP/MCM-41, composites g...

Background Skilled attendant at delivery (SBA) is one of the key indicators used in assessing progress towards improved maternal health. This study aimed at identifying factors influencing SBA utilization in Ilorin, Nigeria. Methods This cross-sectional study was carried out using multi-stage sampling technique among 400 participants in Ilorin, Northcentral Nigeria. A pre-tested questionnaire...

In the present work, results of γ-irradiation on normal and functionalized SBA-15 by aurintricarboxylic acid have been reported. Characterization of normal and functionalized SBA-15 particles before and after γ-irradiation was carried out using Fourier-transform infrared technique. Aurintricarboxylic acid ligand connected to SBA-15 was also analyzed using UV/Vis spectrophotometer. The modified ...

The grafting and sulfation of zirconia conformal monolayers on SBA-15 to create mesoporous catalysts of tunable solid acid/base character is reported. Conformal zirconia and sulfated zirconia (SZ) materials exhibit both Brönsted and Lewis acidity, with the Brönsted/Lewis acid ratio increasing with film thickness and sulfate content. Grafted zirconia films also exhibit amphoteric character, whos...

Problem statement: Santa Barbara Amorphous (SBA-15) is significant mesoporous silica with exclusive and important properties of highly ordered mesopores, hydrothermally stable and thick wall, profusely large surface area and huge pore volume which render it as promising catalyst for wide applications. However, the purely siliceous SBA-15 which lacks of acidity characteristic hinders its ideal c...

CuCl has been successfully immobilized on a novel diamide modified SBA-15, and proven to be an efficient heterogenized catalyst for the oxidative carbonylation of methanol to dimethylcarbonate.

Il Presidente dello SBA rappresenta il sistema ed esercita funzioni di iniziativa e promozione; convoca a presiede il Comitato di indirizzo e controllo, cura l'attuazione delle decisioni del Comitato stesso, predispone la relazione annuale sull'attività dello SBA. Ai sensi dello statuto è investito di poteri dirigenziali e gestionali che esercita in conformità alla normativa generale ed alla re...

Il Presidente dello SBA rappresenta il sistema ed esercita funzioni di iniziativa e promozione; convoca a presiede il Comitato di indirizzo e controllo, cura l'attuazione delle decisioni del Comitato stesso, predispone la relazione annuale sull'attività dello SBA. Ai sensi dello statuto è investito di poteri dirigenziali e gestionali che esercita in conformità alla normativa generale ed alla re...

Small bowel adenocarcinoma (SBA) is an aggressive disease with limited treatment options. Despite previous studies, its molecular genetic background has remained somewhat elusive. To comprehensively characterize the mutational landscape of this tumor type, and to identify possible targets of treatment, we conducted the first large exome sequencing study on a population-based set of SBA samples ...

Many human tumors, such as those of the breast, metastasize initially via the lymphatics. The tumor cell surface is believed to play a critical role in this process. To study the cell surface properties involved in dissemination, the poorly metastasizing R3230AC rat mammary adenocarcinoma was enriched for metastasizing cells by excising rare lymph node metastases arising after the s.c. injectio...