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As the clamour for a Net Zero carbon energy economy increases, it is necessary to harness the potential of renewable energies in powering buildings to lower fossil power plants' contributions to the overall energy mix. This paper aims to present an energy balance load sensitivity analysis and multi-criteria method for sizing a green energy system for powering two office complexes that house space research laboratories. The energy component considered includes battery storage (BAT), captive diesel generator (DG), fuel cell (FC), hydrogen storage (H2T), solar photovoltaic (PV), and wind turbine. Using HOMER, the techno-economic features and the hourly operational details of the energy components were obtained. The efficacy of Entropy- Additive Ratio Assessment was deployed on the outputs from HOMER to obtain the most preferred energy system based on more than one criterion. The result of the study indicates that the most preferred energy system for Abuja is a PV, WD, FC, DG, and BAT, having a total net present cost (TNPC) of $220,930. In contrast, the most suitable energy system for the energy in the Anyigba office consists of PV, FC, and BAT, with its TNPC at $106,955.

The present works describe a stable and facile biosynthesis of silver nanoparticles (AgNPs) from Allium sativum (A. sativum) cloves extract deposited on graphene oxide (GO). The AgNPs with different concentrations of [Ag(NH3)2]+ solution were synthesized under solar irradiation to catalyze the growth of AgNPs prior to the deposition on GO. Their adsorptivity was tested against methylene blue (MB) dye in aqueous media. Characterization analyses revealed that the silver nanoparticle-graphene oxide, Ag:GO-100 (S) nanocomposites were crystalline with asymmetrical spherical-shaped and well-dispersed on GO surfaces. The anchoring of AgNPs on GO sheets acts as spacers for the enhanced nanocomposites’ surface area and synergistically achieved almost a complete removal of MB dye in 5 min. The best rate constant of 4.97816 g mg−1 min−1 was obtained from the pseudo second-order kinetic model. The spontaneous adsorption mechanism was affirmed, and the nanocomposite potential could be exploited as an efficient, cost-effective, and feasible approach in the remediation of contaminated water, as a result of their outstanding performances.

Butyrylcholinesterase (BChE) performs a significant function in Alzheimer’s disease progression. Experimental studies have shown that the function of BChE in the attenuation of cholinergic neurotransmission is essentially altered in brains of advanced AD patients. Here, using the complimentary methods of enzyme kinetic studies, molecular modeling and protein-ligand interaction profiling, we sought to reveal the mechanistic and structural features of BChE-methyrosmarinate interactions. Molecular docking simulations revealed that methylrosmarinate dwelled well in the active centre of BChE, where it got involved in stabilizing non-covalent associations with myriad subsites. Enzyme kinetic experiments showed that the Vm and Ks values were 156.20 ± 3.11 U mg−1 protein and 0.13 ± 0.01 μM, respectively. The inhibition studies showed that methylrosmarinate apparently inhibited BChE in a linear mixed manner, with an IC50 value of 10.31 μM and a Ki value of 3.73 ± 1.52 μM. Taken together, the extremely reduced Ki value and the increased number of BChE–methylrosmarinate interactions presuppose that methylrosmarinate is a good inhibitor of BChE, despite the fact that the mechanism for the effect of BChE inhibition on several pathological conditions in vivo remains unexplored.

The right vertebral artery most commonly originates as the first branch of the right subclavian artery. Although anatomical variants of the aortic arch are commonly encountered on cross-sectional imaging, certain variants of the right vertebral artery are exceedingly rare. In this report, we present 3 cases of aberrant right vertebral artery arising as the last branch of the aortic arch, a very rare variant.