12 research outputs found

    thermalqualitydata

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    The thermal quality in study sites. time.tset: number of hours the thermal model was between 32.2 C and 26.0 C (preferred temperature range of ornate tree lizards) for each julian day a model recorded data site: number (1:10) identifying the site hab: character identifying whether the thermal model was in the upland (u) or wash (w) month: number identifying the mont

    arthropodpitfalldata

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    Arthropod prey abundance at study sites in two habitats. arthropods: number of arthropod prey caught in each pitfall trap (over 24 hours) month: number identifying month the trap was set site: number (1:10) identifying the site where the trap was set hab: character identifying whether the trap was set in the upland (u) or wash (w

    Reactivity Switch of Platinum with Gallium: From Reverse Water Gas Shift to Methanol Synthesis

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    The development of efficient catalysts for the hydrogenation of CO2 to methanol using ā€œgreenā€ H2 is foreseen to be a key step to close the carbon cycle. In this study, we show that small and narrowly distributed alloyed PtGa nanoparticles supported on silica, prepared via a surface organometallic chemistry (SOMC) approach, display notable activity for the hydrogenation of CO2 to methanol, reaching a 7.2 molCH3OH hā€“1 molPtā€“1 methanol formation rate with a 54% intrinsic CH3OH selectivity. This reactivity sharply contrasts with what is expected for Pt, which favors the reverse water gas shift reaction, albeit with poor activity (2.6 molCO2 hā€“1 molPtā€“1). In situ XAS studies indicate that ca. 50% of Ga is reduced to Ga0 yielding alloyed PtGa nanoparticles, while the remaining 50% persist as isolated GaIII sites. The PtGa catalyst slightly dealloys under CO2 hydrogenation conditions and displays redox dynamics with PtGaā€“GaOx interfaces responsible for promoting both the CO2 hydrogenation activity and methanol selectivity. Further tailoring the catalyst interface by using a carbon support in place of silica enables to improve the methanol formation rate by a factor of āˆ¼5

    Rank abundance graphs used to differentiate hotspot and coldspot values from background values.

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    <p>One linear trend within the background values were characteristic of St Kilda whilst two linear trends were primarily seen at Noarlunga. <b>St Kilda: A</b> VLP 1, microplate 2. <b>B</b> HDNA 1, microplate 2. <b>Noarlunga: C</b> VLP 1, microplate 3. <b>D</b> HDNA 2, microplate 2.</p

    Single vertical profile of VLP 1 and LDNA populations at Noarlunga.

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    <p><b>A</b> Microplate three showing little to no association. <b>B</b> Microplate one showing association. Gap in profile indicates a missing data point.</p

    Two-dimensional contour plots showing the highest change in heterogeneity due to the presence of hotspots and coldspots within bacterial and viral subpopulations.

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    <p>Hotspots and coldspots seen across a distance of 6.3Ɨ11.3 cm using Surfer 10 (Golden Software, Inc.). Noarlunga: A VLP 2 showing a 2585-fold change in abundance over 0.9 cm. B LDNA showing a 12.9-fold change in abundance over 0.9 cm. St Kilda: C VLP 1 showing a maximum 10.52-fold change in heterogeneity seen over 0.9 cm. D HDNA 2 showing a maximum 45.2-fold change in heterogeneity seen over 0.9 cm. There were a range of heterogeneities over 0.9 cm (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0102805#pone.0102805.s004" target="_blank">Fig. S4</a>) indicating a variety of intensities for hotspots and coldspots. Abundance levels are indicated by a colour intensity scale in units of cells/particles ml<sup>āˆ’1</sup>. Solid red circles indicate areas of abundance higher than the maximum contour level selected. A minimum contour interval value of at least 1000 was chosen based on maximum machine error. The faint gridlines show sample interval.</p

    Comparison of total mean bacterial and viral populations at Noarlunga via vertical depth profiles.

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    <p>Total mean bacterial and total mean viral population abundance within all three microplates. <b>A</b> Noarlunga, (nā€Š=ā€Š1350). <b>B</b> St Kilda, (nā€Š=ā€Š1045). Error bars represent the 95% confidence intervals obtained from all three replicates (nā€Š=ā€Š12).</p

    Significant Moran correlograms of non-randomly distributed bacterial subpopulations at St Kilda.

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    <p><b>A</b> LDNA, microplate 2. <b>B</b> LDNA, microplate 3. <b>C</b> HDNA 2, microplate 2. <b>D</b> Total bacteria, microplate 2. Filled and unfilled data points indicate significant and non-significant Moranā€™s I values (pā‰¤0.01). Only sample points with ā‰„30 pairs of values were included.</p

    Identification of bacterial and viral subpopulations via flow cytometry.

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    <p>Flow cytometric cytograms of side-scatter light versus green fluorescence (SYBR Green) and histograms of green fluorescence (SYBR Green). <b>Noarlunga: </b><b>A</b> cytogram <b>B</b> histogram; <b>St Kilda: </b><b>C</b> cytogram <b>D</b> histogram showing two distinct viral populations (VLP 1 and VLP 2) and three distinct bacterial populations (LDNA, HDNA 1 and HDNA 2).</p
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