A series of four donor-acceptor conjugated copolymers P1-P4 with linear and branched side chains based on a ladder-type indacenodithiazole (IDTz) moiety containing an electron-deficient thiazole unit are copolymerized with ...

يتناول البحث التعريف بالمكانة العلمية للقاضي عياض وبكاتبه الشهير:" الشفا في التعريف بحقوق المصطفى" والذي يُعد من الكتب التأسيسية في مجاله، وهو كتاب ضاهى به عياض كتب دلائل وأعلام النبوة في المشرق الإسلامي، حيث كانت المعركة ...

G-protein-coupled receptors (GPCRs) can bias signaling through distinct biochemical pathways that originate from G-protein/receptor and β-arrestin/receptor complexes. Receptor conformations supporting β-arrestin engagement ...

We investigated the fabrication of Co-doped BiVO4 (Bi1-xCoxVO4+δ, 0.05 < x < 0.5) by the substitution of Co ions for Bi sites in BiVO4. The X-ray diffraction (XRD), Raman, and X-ray photoelectron spectroscopy (XPS) results ...

The present study describes the synthesis of a series of 22 chalcone analogs. These compounds were evaluated as potential human MAO-A and MAO-B inhibitors. The compounds showed varied selectivity against the two isoforms. ...

Background Poor compliance with chemoprophylaxis is a major contributing factor to the risk of malaria in travelers. Pre-travel chemoprophylaxis may improve compliance by enabling “drug-free holidays.” The standard treatment ...

This article aims to examine the relationships between external and internal social capital, managerial human capital, and managerial knowledge structures, respectively. It also examines the effect of managerial human ...

Qatar has experienced extraordinary development in its economic, social and environmental sectors, thus improving its worldwide ranking in several aspects. As per 2018 Statistics, Qatar ranked on the top of economies with ...

The objective of this study is to investigate the stability of the active layer of polymer solar cells from the effect of UV–visible light irradiation using different conditions with respect to time. The active layers were ...

Solution combustion synthesis was used to prepare cobalt oxide nanoparticles at different fuel ratio (φ = 0.5, 1, and 1.75). The synthesized particles were characterized using XRD, SEM, TEM, FTIR and XPS to study the ...