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Australia has an advantage of having an abundant source of solar- and wind-based renewable energy. It can be utilized for renewable hydrogen production via liquid ammonia (NH3) pathway. Countries importing renewable ammonia can decompose it back to pure hydrogen using CSIRO (Commonwealth Scientific and Industrial Research Organization) metal membrane technology. The membrane separates ultrahigh pure hydrogen from ammonia while blocking all other gases. Re-cracked hydrogen can be used for fuel cell vehicles and other energy applications. The assessment of the economic viability of the abovementioned process chain requires a techno-economic evaluation (TEE) that involves process simulation, mass and energy balances, plant sizing, capital and operating cost estimations, and cash-flow and sensitivity analyses. This chapter presents the TEE methodology for a hydrogen energy system and it can be used in assessing engineering, research and development impact, scale-up, and the feasibility of the production system.

Salt-based preservation is practiced for decades in the leather industry because of its versatility, cost-effectiveness, and availability. The salt removed from the soaking process causes significant pollution including organic and elevated total dissolved solids (TDS). Hence, a low-salt skin preservation method using commercial sodium polyacrylate with a reduced quantity of sodium chloride aiming to retain leather properties and pollution reduction was the principal focus of the study. Commercial sodium polyacrylate initially characterized for water absorption capacity along with structural and functional properties is confirmed by NMR and IR spectroscopic techniques. In preliminary experiments, the process parameters attained optimized conditions of sodium polyacrylate (SPA) quantity (5%), a minimal amount of salt (15%), and contact time (4 h) required for skin preservation. Besides, reusability studies after SPA recovery (95%) were applied to skins with an optimized quantity of SPA and salt subsequently stored for 15 days along with control (40% salt). The results revealed that SPA with low salt aided an adequate curing efficiency with a substantial reduction (> 65%) of TDS and comparable physical and organoleptic properties on par with the conventional method. Overall, SPA supported low-salt skin preservation reduces pollutant load (TDS) caused due to using of 40% sodium chloride in the conventional curing process.

Let G = (X, Y,E) be a bipartite graph. A X-dominating set D ⊆X is called a X−dominating colour transversal set of a graph G if D isa transversal of at least one $chi$−partition of G.The minimum cardinal-ity of a X−dominating colour transversal set is called X−dominatingcolour transversal number and is denoted by $chi_{dct}(G)$. We find thebounds of X−dominating colour transversal number and characterizethe graphs attaining the bound.

Allosteric inhibitors of glutaminase (GAC), such as BPTES, CB-839 and UPGL00019, have great promise as inhibitors of cancer cell growth, but potent inhibitors with drug-like qualities have been difficult to achieve. Here, a small library of GAC inhibitors based on the UPGL00019 core is described. This set of derivatives was designed to assess if one or both of the phenylacetyl groups flanking the UPGL00019 core can be replaced by smaller simple aliphatic acyl groups without loss in potency. We found that one of the phenylacetyl moieties can be replaced by a set of small aliphatic moieties without loss in potency. We also found that enzymatic potency co-varies with the VDW volume or the maximum projection area of the groups used as replacements of the phenylacetyl moiety and used literature X-ray data to provide an explanation for this finding.