https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24304 485) (P < 0.01), p-PDPK-1 (Ser⁴¹) (P < 0.05), and PKCζ (P < 0.05) was higher in the PCUN and PIUN groups, and hepatic PDK4 (P < 0.001) and CPT-1 (P < 0.05) protein abundance was also higher in the PIUN twin fetus. We also found that the expression of a number of microRNAs was altered in response to PCUN or PIUN and that there is evidence that these changes may underlie the changes in the protein abundance of key regulators of hepatic fatty acid β-oxidation in the PCUN and PIUN groups. Therefore, embryo number and the timing of maternal undernutrition in early pregnancy have a differential impact on hepatic microRNA expression and on the factors that regulate hepatic fatty acid oxidation and lipid synthesis.]]> Wed 28 Feb 2024 15:22:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26103 Wed 24 Jul 2019 13:16:20 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35977 Wed 22 Jan 2020 12:27:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34227 λ). For example, in the region below about 0.2δ (δ is the boundary layer thickness) where Re_λ varies significantly, S and F strongly vary with Re_λ and can be multivalued at a given Re_λ. In the outer region, between 0.3δ and 0.6δ, S, F, and Re_λ remain approximately constant. The channel flow direct numerical simulation data for S and F exhibit a similar behavior. These results point to the ambiguity that can arise when assessing the Re_λ dependence of S and F in wall shear flows. In particular, the multivaluedness of S and F can lead to erroneous conclusions if y/δ is known only poorly, as is the case for the atmospheric shear layer (ASL). If the laboratory turbulent boundary layer is considered an adequate surrogate to the neutral ASL, then the behavior of S and F in the ASL is expected to be similar to that reported here.]]> Wed 20 Feb 2019 15:55:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39590 Wed 15 Jun 2022 12:47:21 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34792 3 in both cases. For the binary mixture, particle species of size 200 and 300 µm were used, while for the multicomponent mixture eight particle species with sizes between 49 and 421 µm were selected. The partition curves obtained from the model predictions were successfully validated with published experimental results. The separation performance of the RC was characterised by analysing how the imperfection and the d₅₀ values changed with the process variables. Furthermore, the simulation data were used for the first time to demonstrate the concentration distribution of the individual solid particle species in the fluidization and inclined sections of the RC. This study showed that the particle species with sizes closer to the d₅₀ values had a larger presence in both the vertical and inclined sections of the RC. Thus, the total concentration inside the RC mainly consisted of those particle species.]]> Wed 15 Feb 2023 09:24:51 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45530 Wed 13 Mar 2024 11:25:06 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40827 Wed 13 Mar 2024 08:04:03 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30467 6,6,6,14][TFSI]), with polytetra-fluoroethylene (PTFE) particles used as thickeners. Greases with different base liquid concentrations (60–80 wt %) were investigated using small-amplitude oscillatory shear and viscous flow measurements, and contact angle measurements probed adhesion at base liquid–PTFE interfaces. Rheological properties are influenced by base liquid–PTFE adhesion and the chemical structure of the grease base liquids. With the addition of thickener, the greases generally have higher elasticity, strain resistance, and frequency independent properties. Viscometric rheological tests illustrate non-Newtonian shear-thinning behaviour for all greases. [BMIM][TFSI] based greases show the most elastic properties and strain resistance, as well as the highest initial and lowest final viscosities of the greases tested.]]> Wed 11 Apr 2018 18:05:22 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30250 Wed 11 Apr 2018 16:54:58 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30496 Wed 11 Apr 2018 16:43:37 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26106 Wed 11 Apr 2018 15:38:44 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24097 Wed 11 Apr 2018 14:05:51 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23905 Wed 11 Apr 2018 13:24:59 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30812 Wed 11 Apr 2018 13:11:38 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29770 Wed 11 Apr 2018 11:15:56 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27371 Wed 11 Apr 2018 10:29:36 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24667 Wed 11 Apr 2018 10:03:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30349 Wed 11 Apr 2018 09:58:11 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30649 3−y+x³−x+kxy whose zero loci define elliptic curves for k≠0,±3.]]> Wed 11 Apr 2018 09:57:19 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31333 1,4]TFSA). AFM measurements reveal that the imidazolium cation adsorbs at the H-Si(111)/[EMIm]TFSA interface leading to an ordered clustered facet structure of ∼3.8 nm in size. In comparison, the Si(111)/[Py_1,4]TFSA interface appeared the same as the native surface in argon. For both pure ILs, repulsive forces were measured as the tip approached the surface. On addition of LiTFSA attractive forces were measured, revealing marked changes in the interfacial structure.]]> Wed 11 Apr 2018 09:55:10 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24576 Tue 28 May 2019 16:04:42 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31261 Tue 28 Jan 2020 16:22:32 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32228 Tue 15 May 2018 12:09:15 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43145 Tue 13 Sep 2022 15:21:31 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43131 Tue 13 Sep 2022 15:07:25 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43111 Tue 13 Sep 2022 13:43:24 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33512 Tue 13 Nov 2018 13:07:00 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33511 Tue 13 Nov 2018 13:06:59 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26088 Tue 11 Jun 2019 15:22:57 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32669 Tue 10 Jul 2018 15:31:13 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40121 2-TPD and H₂-FTIR. IDP catalyst displays a higher metal dispersion and higher concentration of nickel hydrides than impregnated and DP catalysts, while bigger Ni nanoparticles formed in impregnated catalysts exhibit a higher concentration of nickel hydrides per surface Ni. The guaiacol conversion was not significantly affected by the catalyst preparation method, while the product selectivity was altered. Higher cyclohexane formation rate was detected over IDP catalysts compared to DP and impregnated catalysts. Besides, cyclohexane formation rate displays a positive linear correlation with the concentration of nickel hydrides, suggesting nickel hydrides play a crucial role in the hydrodeoxygenation reaction.]]> Tue 05 Jul 2022 13:57:40 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43843 Tue 04 Oct 2022 11:46:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33279 Tue 03 Sep 2019 18:27:24 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31529 Thu 21 Oct 2021 12:53:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39966 Thu 21 Jul 2022 09:43:25 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25408 Thu 20 Oct 2022 13:23:28 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39648 Thu 16 Jun 2022 15:16:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32961 Thu 16 Aug 2018 14:31:46 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32960 Thu 16 Aug 2018 14:31:46 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31480 Thu 04 Jul 2019 13:09:23 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30504 Thu 03 May 2018 17:01:30 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31514 Sat 24 Mar 2018 08:44:17 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31498 2. This process has been studied by quantum chemical calculation, and a reaction potential energy surface has been developed. The rate constant of initial Cl atom fission has been calculated by canonical variational transition state theory as k = 1.45 × 10¹⁵ exp(−222 ± 9 kJ mol^–1/RT) s^–1 between 500 and 2000 K. A minimal kinetic model was developed to model the decomposition and major products. Oxidative decomposition was studied in nitrogen with O₂ contents of 1, 6, 12, and 20 mol %. Increasing O₂ to 6–8% increased the rate of decomposition of HCCP and decreased the yield of 8ClNP. Above 823 K, hexachlorobenzene (HCB) and CO became major products. The oxidative reaction has also been studied quantum chemically. At high O₂ content (>∼10%), the rate of decomposition of HCCP declined as did yields of 8ClNP and HCB, but CO yields increased]]> Sat 24 Mar 2018 08:44:07 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31224 Sat 24 Mar 2018 08:43:21 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31433 Sat 24 Mar 2018 08:43:13 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27293 Bacillus subtilis and Gram-negative Escherichia coli growth.]]> Sat 24 Mar 2018 07:40:19 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26093 Sat 24 Mar 2018 07:39:55 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26107 -4 (x is the streamwise direction). It is important to stress that this derivation does not use the constancy of the non-dimensional dissipation rate parameter C_∊ = ⋷u^'3/L_u (L_u and u' are the integral length scale and root mean square of the longitudinal velocity fluctuation respectively). We show, in fact, that the constancy of C_∊ is simply a consequence of complete SP (i.e. SP at all scales of motion). The significance of the analysis relates to the fact that the SP requirements for the mean velocity and mean turbulent kinetic energy (i.e. U ~ x^-1 and k ~ x^-2 respectively) are derived without invoking the transport equations for and . Experimental hot-wire data along the axis of a turbulent round jet show that, after a transient downstream distance which increases with Reynolds number, the turbulence statistics comply with complete SP. For example, the measured ⋷ agrees well with the SP prediction, i.e. ⋷ ~ x^-4, while the Taylor microscale Reynolds number Reλ remains constant. The analytical expression for the prefactor A_∊ for ⋷ ~ (x - X₀)^-4(where x₀ is a virtual origin), first developed by Thiesset et al. (J. Fluid Mech., vol. 748, 2014, R2) and rederived here solely from the SP analysis of the s.b.s. energy budget, is validated and provides a relatively simple and accurate method for estimating ⋷ along the axis of a turbulent round jet.]]> Sat 24 Mar 2018 07:39:53 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28628 in-situ bulk conductivity measurements made with a hydrostatic profile tool to po-rosity. Porosities estimated using the hydrostatic profile tool were found to be similar to the measured porosi-ties.]]> Sat 24 Mar 2018 07:38:58 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29972 in situ differential electrothermal sensors and electrostatic actuators. This device is used as the scanner stage in an atomic-force microscope. Additional internal model components are included in the controllers to compensate for the residual tracking errors due to plant nonlinearities. In a large scan range with a diameter of 16 µm, we achieved tracking of 1430-Hz spiral sinusoids, a frequency beyond the undamped fundamental resonance of the plant at 1340 Hz. This leads to a video-rate scan speed of 18 frames/s.]]> Sat 24 Mar 2018 07:37:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28176 Sat 24 Mar 2018 07:36:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30691 2 nanoplate photoelectrode is prepared by using a mild wet-chemical method. Depending on the calcination temperatures, SnS₂-based photoelectrodes can either retain their n-type nature with greatly enhanced anodic photocurrent density (ca. 1.2 mA cm⁻² at 0.8 V vs. Ag/AgCl) or be completely converted into p-type SnS to generate approximately 0.26 mA cm⁻² cathodic photocurrent density at −0.8 V vs. Ag/AgCl. The dominance of sulfur and tin vacancies are found to account for the dramatically different photoelectrochemical behaviors of n-type SnS₂ and p-type SnS photoelectrodes. In addition, the band structures of n-type SnS₂ and p-type SnS photoelectrodes are also deduced, which may provide an effective strategy for developing SnS₂/SnS films with controllable energy-band levels through a simple calcination treatment.]]> Sat 24 Mar 2018 07:35:09 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30312 Sat 24 Mar 2018 07:31:49 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26063 Sat 24 Mar 2018 07:31:34 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26068 Sat 24 Mar 2018 07:31:29 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30048 T. At a low feed solids mass flux of 1.5 t m⁻²h⁻¹, the REFLUX™ Classifier produced high-grade products at a high recovery. Overall a grade of 66.1 wt-% Fe_T with Fe recovery of 80 wt-% could be achieved in a single-stage separation. Within the 0.020–0.038 mm size fraction, grades of 68.8 wt-% Fe_T were achieved with iron recoveries of 94.7 wt-%. Excellent recoveries of up to 57.0 wt-% were achieved even for the −0.020 mm size fraction.]]> Sat 24 Mar 2018 07:31:20 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30880 Sat 24 Mar 2018 07:30:37 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25491 Sat 24 Mar 2018 07:30:00 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30661 Sat 24 Mar 2018 07:29:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30975 Sat 24 Mar 2018 07:27:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30178 50Al₅₀ melt with the embedded-atom method potential developed in [G.P. Purja Pun, Y. Mishin, Phil. Mag., 2009, 89, 3245]. The principal objective of the work is to quantitatively characterise and analyse thermotransport in the system, i.e. diffusion driven by a temperature gradient. In addition, direct phenomenological coefficients for mass and thermal transport are also evaluated and analysed in the process. Furthermore, the results obtained are compared with previously published data for a different model of Ni₅₀Al₅₀ melt with an alternative embedded-atom method potential for the alloy as well as with experiment where possible. It is found that both potentials are able to consistently predict both direct transport coefficients over a wide temperature range. However, these two potentials are found to be inconsistent in characterising the cross-coupled heat and mass transport, predicting even different directions (sign) of the heat of thermotransport. The origin of this difference is discussed in the paper in detail.]]> Sat 24 Mar 2018 07:26:15 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26569 Sat 24 Mar 2018 07:26:11 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25876 Sat 24 Mar 2018 07:25:54 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31039 p_f) is small, the direct Monte Carlo simulation requires a large number of simulations. Subset simulation is one of most efficient variance reduction techniques for the simulation of small p_f. It has been recently proposed to use subset simulation instead of direct Monte Carlo simulation in RFEM. It is noted, however, that subset simulation requires calculation of the factor of safety (FS), while direct Monte Carlo requires only the examination of failure or non-failure. The search for the FS in RFEM could be a tedious task. For example, the search for the FS of slope stability by the strength reduction method (SRM) usually requires much more computational time than a failure or non-failure checking. In this paper, the subset simulation is combined with RFEM, but the need for the search of FS is eliminated. The value of yield function in an elastoplastic finite element analysis is used to measure the safety margin instead of the FS. Numerical experiments show that the proposed approach gives the same level of accuracy as the traditional subset simulation based on FS, but the computational time is significantly reduced. Although only examples of slope stability are given, the proposed approach will generally work for other types of geotechnical applications.]]> Sat 24 Mar 2018 07:25:48 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26537 95% of sperm. Anapparent molecular rearrangement in the complex occurs, bringing PRKACA and TCP11 into proximity. Taken together, these results suggest a role for the novel complex of SPIF, PRKACA, and TCP11 during spermcapacitation, fertilization, and embryogenesis.]]> Sat 24 Mar 2018 07:23:27 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26538 Sat 24 Mar 2018 07:23:26 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25150 Sat 24 Mar 2018 07:17:09 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24331 p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) from their precursors. We have identified 2,6-dichlorophenol (2,6-DCPh), 2,4-dichlorophenol (2,4-DCPh), and 2,4,6-trichlorophenol (2,4,6-TriCPh), but have detected no chlorinated benzenes (CBzs). The detected chlorinated and nonchlorinated DD/Fs comprise dibenzo-p-dioxin (DD), 1- and 2-monochlorodibenzo-p-dioxin (1-, 2-MCDD), 1,6-, 1,9-, 1,3-dichlorodibenzo-p-dioxin (1,6-, 1,9-, 1,3-DCDD), 4-monochlorodibenzofuran (4-MCDF), and 4,6-dichlorodibenzofuran (4,6-DCDF) at the reaction temperatures of 350 and 400 °C. However, at a lower reaction temperature, 250 °C, we have detected no PCDD/Fs. We have demonstrated that neat silica surfaces catalyze the generation of PCDD/Fs from chlorophenols at the upper range of the catalytic formation temperature of PCDD/F. The present finding proves the generation of PCDD/Fs on particles of fly ash, even in the absence of transition metals.]]> Sat 24 Mar 2018 07:16:37 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24300 Sat 24 Mar 2018 07:14:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25162 Sat 24 Mar 2018 07:14:31 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23869 Sat 24 Mar 2018 07:13:42 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23811 Sat 24 Mar 2018 07:12:52 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23841 Sat 24 Mar 2018 07:12:12 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24087 Corymbia maculata. The higher rate of fertilizer addition improved seedling establishment of Mimosaceae and the survival of Myrtaceae species. High nutrient treatments increased weed and grass densities, which may have reduced the nutrient benefit for native species. In conclusion, biosolids and the high rate of fertilizer application ameliorated the nitrogen and phosphorus deficiency of spoil to support growth and survival of reintroduced native species. However, potential benefits were attenuated by competition from accompanying weed growth that could be managed by implementing a control program.]]> Sat 24 Mar 2018 07:11:47 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24088 Sat 24 Mar 2018 07:11:46 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24850 Sat 24 Mar 2018 07:11:24 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25068 Sat 24 Mar 2018 07:10:42 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24356 Sat 24 Mar 2018 07:10:18 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23931 Sat 24 Mar 2018 07:10:12 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24063 Sat 24 Mar 2018 07:09:41 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:42622 Mon 29 Aug 2022 09:21:12 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26094 Mon 23 Sep 2019 13:38:02 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30516 Mon 23 Sep 2019 12:00:29 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31985 Streptomyces are Gram-positive bacteria that occupy diverse ecological niches including host-associations with animals and plants. Members of this genus are known for their overwhelming repertoire of natural products, which has been exploited for almost a century as a source of medicines and agrochemicals. Notwithstanding intense scientific and commercial interest in Streptomyces natural products, surprisingly little is known of the intra- and/or inter-species ecological roles played by these metabolites. In this report we describe the chemical structures, biological properties, and biosynthetic relationships between natural products produced by Streptomyces isolated from internal tissues of predatory Conus snails, collected from the Great Barrier Reef, Australia. Using chromatographic, spectroscopic and bioassays methodology, we demonstrate that Streptomyces isolated from five different Conus species produce identical chemical and antifungal profiles – comprising a suite of polycyclic tetramic acid macrolactams (PTMs). To investigate possible ecological (and evolutionary) relationships we used genome analyses to reveal a close taxonomic relationship with other sponge-derived and free-living PTM producing Streptomyces (i.e., Streptomyces albus). In-depth phylogenomic analysis of PTM biosynthetic gene clusters indicated PTM structure diversity was governed by a small repertoire of genetic elements, including discrete gene acquisition events involving dehydrogenases. Overall, our study shows a Streptomyces-Conus ecological relationship that is concomitant with specific PTM chemical profiles. We provide an evolutionary framework to explain this relationship, driven by anti-fungal properties that protect Conus snails from fungal pathogens.]]> Mon 23 Sep 2019 11:12:26 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32054 Mon 23 Sep 2019 10:26:50 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29900 Mon 23 Sep 2019 10:10:22 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:42613 Mon 22 May 2023 10:52:38 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38470 Mon 09 May 2022 16:19:51 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29902 2 and CO, attributed to the tar cracking abilities of slag.]]> Fri 31 May 2019 12:33:49 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30550 Fri 30 Aug 2019 13:21:53 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33283 Fri 28 Sep 2018 15:47:22 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39234 4⁺ cations in zeolites with Ru³⁺ ions, are employed for the hydrodeoxygenation of guaiacol. The performance results indicate ion-exchanged Ru zeolites, with extremely low Ru contents (~0.2 wt%), possess a high intrinsic HDO activity compared to the catalysts prepared by the incipient wetness impregnation method. On the basis of TEM, FTIR, XPS and TPD analysis, the NH₄⁺ ions in zeolite were substituted by Ru species, with metal particles entered the zeolite cages and finely dispersed on the support. These ion-exchanged Ru particles exhibit a strong electronic interaction with oxygen atoms of zeolite framework with a mixed Ru(0)-Ru(III) species observed in the reduced samples. In contrast, only Ru⁰ was detected in the reduced impregnated Ru/ZSM-5. The partial-reduced Ru species over the ion-exchanged Ru/ZSM-5 catalyst shows a high H₂ adsorption activity facilitating the hydrogenation of guaiacol to the saturated products (such as 2-methoxycyclohexanol). In addition, ion-exchanged Ru-ZSM-5 and Ru-BEA catalysts present a similar normalized cyclohexane formation rate (based on the concentration of acid sites), suggesting the acid sites play a pivotal role in the deoxygenation of 2-methoxycyclohexanol to cyclohexane.]]> Fri 27 May 2022 13:36:26 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40450 Acridotheres tristis) in Australia, one of the most broadly distributed invasive birds globally. We radio-tracked mynas from invasion-front sites versus long-established sites in New South Wales. We quantified activity using frequent movements in familiar areas and exploration using infrequent long-distance excursive movements, while also accounting for environmental variation. We discovered that mean daily distance travelled was larger in invasion-front than in invasion-source mynas, suggesting front mynas were more active. Invasion front mynas had significantly larger exploratory home ranges, moved greater maximum daily distances, and changed roost more frequently, suggesting front mynas were also more exploratory; the results were maintained when climate was included as a covariate. To our knowledge, this is the first study to show enhanced exploration and activity in free-ranging invasion-front birds. Inter-individual variation in movement-relevant behaviors might be facilitating the ongoing Australian myna range expansion, although habitat effects cannot be fully excluded. These findings point to the potential importance of considering changes in behavior when modelling alien animal invasions and applied conservation actions.]]> Fri 22 Jul 2022 14:44:28 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39855 6 cluster and different groups-decorated V-shaped ligands (H₂L), are successfully synthesized through a facile ligand functionalization method. Subsequently, three isostructural Zr-MOFs, including the parent structure Zr(H₂L), amino-decorated Zr(H₂L) (NH₂-Zr(H₂L)), and fluorine and amino bi-decorated Zr(H₂L) (F-NH₂-Zr(H₂L)), are employed as the platform for systematically investigating the effect of Lewis basic groups on the CO₂ adsorption and separation behavior, more importantly the CO₂ chemical fixation. Benefitting from the decorated Lewis basic groups, not only the CO₂ adsorption enthalpy and selectivity over CH₄ of NH₂-Zr(H₂L) and F-NH₂-Zr(H₂L) are improved, but also their catalytic activities for cycloaddition of CO₂ to form cyclic carbonates are significantly enhanced. Among them, F-NH₂-Zr(H₂L) exhibits the most effective performance for cycloaddition of CO₂ and styrene epoxide, which can be attributed to the strong polarization between the CO₂ molecule and the framework of F-NH₂-Zr(H₂L). Under a mild condition, the yield of F-NH₂-Zr(H₂L) for cycloaddition of CO₂ with styrene epoxide can reach up to 97%, which surpasses most of the reported MOFs-based catalysts.]]> Fri 22 Jul 2022 13:20:26 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34244 Fri 21 May 2021 11:16:25 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39742 Fri 17 Jun 2022 18:27:05 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39733 Fri 17 Jun 2022 17:59:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:42769 Fri 02 Sep 2022 10:04:37 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41426 Fri 02 Sep 2022 09:26:02 AEST ]]>