A family of cheap carbon black based Fe-Nx/C electrocatalysts with superhigh-performance for oxygen reduction reaction (ORR) were synthesized. The one with Fe 10 wt% and N 1.57 wt% shows the best performance. The activity order of different active sites for ORR was revealed firstly: Fe-N4/2-C > Fe4-N-C > N-C ≫ Fe4-C ≈ C.

OBJECTIVE AND DESIGN This cross-sectional study aimed to investigate associations between a marker of cardiac strain, the N-terminal prohormone B-type natriuretic peptide (NT-proBNP), and inflammation as reflected by either a conventional or novel inflammatory marker in a bi-ethnic South African cohort. METHODS AND SUBJECTS We measured NT-proBNP, C-reactive protein (CRP) and plasma-soluble ur...

Wireless networks are gaining popularity to its peak in the present era and therefore appealing the users for wireless connectivity irrespective of their geographic position. There is an increasing threat of attacks on the Mobile Ad-hoc Networks (MANET). Black hole attack is one of the security threat in which the traffic is redirected to such a node that actually does not exist in the network....

Dietary supplements Garlic and Black Sesame consist of phytoestrogens; it has been clinically used for treating mild depressive disorders by possible Estrogenic and Antioxidant mechanism. The purpose of the study was to examine the effect of dietary supplements on depression in ovariectomized (OVX) rat by despair force swimming test and In vivo-lipid peroxidation study. After the treatment of G...

Net-Centric Warfare places the network in the center of all operations, making it a critical resource to attack and defend during wartime. This thesis examines one particular network attack, the Black Hole attack, to determine if an analytical model can be used to predict the impact of this attack on ad-hoc networks. An analytical Black Hole attack model is developed for reactive ad-hoc network...

Herein, two sunlight responsive photocatalysts including TiO2 nanoparticles (NPs) and TiO2/graphene quantum dots (GQDs) nanocomposite for degrading a textile dye, Reactive Black 5 (RB5), were prepared. The results showed that 100% of 50 ppm RB5 could be degraded by NPs TiO2/GQDs within 60 30 min irradiation, respectively. Hence, much better photocatalytic activity in degradation was achieved un...