https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:19284 Wed 11 Apr 2018 14:01:36 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45435 2O₃ catalyst for the hydrogenation of carbon oxides, in the presence of light hydrocarbons, was studied. Ni/Al₂O₃ displayed a high activity for the complete conversion of CO and CO₂ to methane and C₂₊ hydrocarbons. Moreover, over a discrete and relatively narrow temperature range, the net concentration of light C₂₊ hydrocarbons was elevated, with the exit stream containing a higher concentration of C₂₊ species than was present in the feed stream and the product stream being virtually free of carbon oxides. It is found that the addition of manganese can enhance the selectivity toward the production of light hydrocarbons. A series of Ni–Mn/Al₂O₃ catalysts, prepared with different Ni/Mn ratios, were studied. Various characterization techniques such as X-ray diffraction (XRD) analysis, CO and H₂ chemisorption, in situ nitric oxide adsorption Fourier transform infrared spectroscopy (NO-FTIR), and temperature-programmed reduction (TPR) were performed to gain an insight into how the addition of Mn to the primary catalyst enhances the yield of light hydrocarbons. The origin of Mn promotion was demonstrated through density functional theory (DFT) calculations, which revealed the favorable Mn substitution at the Ni(211) step edge sites under reducing conditions. The affinity of these Mn species toward oxidation stabilizes the CO dissociation product and thus provides a thermodynamic driving force that promotes C–O bond cleavage compared to the Mn-unmodified catalyst surface.]]> Wed 07 Feb 2024 15:34:43 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24972 Tue 17 Jul 2018 14:12:54 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45327 Thu 27 Oct 2022 08:37:20 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8304 Sat 24 Mar 2018 08:40:32 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:94 Sat 24 Mar 2018 07:42:06 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26979 2+ in good agreement with the observed luminescence emission at 560 nm for aluminosilicates produced by a ⁴T1(⁴G)→⁶A1(⁶S) transition in tetrahedrally coordinated Mn²⁺. Moscovite samples display spectral CL bands at 285 and 560 nm but only when the electron-beam is directed along the (0 1 0) orientation and not along the (0 0 1) orientation. The Tl⁺ versus K⁺ cation isomorphism anchors the luminogenous hydrous thallium–manganese complexes to the potassium-bearing aluminosilicate surfaces under analyses. The CL emission bands at 285 and 560 nm of these complexes together with the EDS detection of thallium are a fast analytical measurement detecting the presence of thallium in further studies involving this toxic element.]]> Sat 24 Mar 2018 07:26:58 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:3343 Sat 24 Mar 2018 07:22:35 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32357 PW_Ω which is generated by the shifts of prolate spheroidal wave functions, we generate frames (reps. Riesz bases) for the bandpass space, and show that the frame (resp. Riesz) bounds are the same as those of the baseband frame (resp. Riesz basis).]]> Mon 28 May 2018 09:41:01 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38759 in planta. BcNRAMP1 is expressed in the whole plant body of pak choi, with a higher abundance in root tissues than in shoots. Mn deficiency and Cd exposure strongly induced BcNRAMP1 transcription levels. Through transient expression of BcNRAMP1-GFP fusion protein in tobacco leaf epidermal cells, BcNRAMP1 was revealed as a plasma membrane protein. Expressing BcNRAMP1 in yeast enhanced yeast cells to absorb Mn, Cd, and iron (Fe). Overexpression of BcNRAMP1 in Arabidopsis wild-type and nramp1 mutant increased and complemented Mn and Cd transportation and accumulation, respectively. Using noninvasive microelectrode ion flux measurements, a direct evidence that BcNRAMP1 acts on Cd influx in Arabidopsis root cells was provided. The results of this study reveal that BcNRAMP1 functions as a NRAMP protein in planta, absorbing nutrient metal Mn and the toxic metal Cd.]]> Mon 24 Jan 2022 16:32:15 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24492 -1 Mn, and this correlated with an increase in TH phosphorylation at serines 40, 31 and 19. However, in the striatum at PND70, a time by which Mn levels were no longer elevated, there was a dose dependent decrease in TH protein levels, reaching significance at 20 mg kg^-1 Mn, and this correlated with TH phosphorylation at Ser40 and Ser19. There was however a significant increase in phosphorylation of TH at serine 31 at 20 mg kg^-1 Mn, which did not correlate with TH protein levels. Taken together our findings suggest that neonatal Mn exposure can have both short-term and long-term effects on the regulation of TH in the striatal dopaminergic system.]]> Fri 22 Apr 2022 10:22:04 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49879 Fri 09 Jun 2023 09:54:44 AEST ]]>