10 research outputs found

    Model selection analysis for the constrained distribution-abundance relationship<sup>*</sup>.

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    <p>* Linear, nonlinear, and various segmented regression models were compared employing AIC<sub>c</sub>. For example, sloping/horizontal refers to a linear fit of a sloping line to the data up to the breakpoint and then a horizontal line after the breakpoint.</p

    Comparison of number of ponds occupied by <i>Pseudacris triseriata</i> versus those suitable across years.

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    <p>Open symbols and dashed line are ponds occupied and closed symbols and solid line are number of ponds deemed suitable habitat. Ponds estimated as suitable were 1) open-canopy ponds that dried the previous fall, 2) open-canopy ponds that did not dry the previous fall, and 3) closed-canopy ponds, respectively, weighted by the frequency of occupancy in the 2001 to 2008 period, and summed (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0097387#s2" target="_blank">Methods</a> for details).</p

    Rodionov regime shift analysis of pond occupancy for the chorus frog<sup>*</sup>.

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    <p>*Regime shift analysis for pond occupancy (0.05 level, expected regime length of 4 years). RSI is the regime shift index <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0097387#pone.0097387-Rodionov1" target="_blank">[44]</a>, and mean and length are mean number of ponds occupied in a regime and the length of the regime. If a regime shift is detected at a pre-determined α-level and expected regime cut-off length, mean values of the old and new regimes differ statistically at least at the given level (actual significance level is calculated for shifts with a number of preceding and following years, e.g., 2000–2001 occupancy boundary differed at the 1.4E-08 level, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0097387#pone.0097387-Rodionov1" target="_blank">[44]</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0097387#pone.0097387-Rodionov2" target="_blank">[45]</a>).</p

    Model selection analyses for distribution-abundance relationships for the chorus frog<sup>*</sup>.

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    <p>*Analyses for the West and East sides of the E. S. George Reserve. Model designations as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0097387#pone-0097387-t001" target="_blank">Table 1</a> (in the case where two sloping/sloping models are included this indicated the lines were of different orientation to each other).</p

    Interspecific distribution-abundance relationship for thirteen species of ESGR amphibians.

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    <p>Data fit to the relationship, y = a(1−b<sup>x</sup>), R<sup>2</sup> = 0.73, F<sub>1,11</sub> = 30.4, p = 0.0002. Species represented are: <i>Hyla versicolor</i> (Hve), <i>Pseudacris crucifer</i> (Pcr), <i>P. triseriata</i> (Ptr), <i>Rana catesbeiana</i> (Rca), <i>R. clamitans</i> (Rcl), <i>R. pipiens</i> (Rpi), <i>R. sylvatica</i> (Rsy), <i>Ambystoma laterale</i> (Ala), <i>A. maculatum</i> (Ama), <i>A. tigrinum</i> (Ati), and <i>Notophthalmus viridescens</i> (Nvi).</p

    Regional population size (histograms) and number of occupied ponds (line) across years for <i>Pseudacris triseriata</i>.

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    <p>Regional population size was the sum across all ponds of larval population sizes (i.e., average density in a pond x pond surface area corrected for drying on each sample date).</p

    Constrained interspecific distribution-abundance relationship for the ESGR amphibians.

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    <p>The dependent variable is the average fraction of potentially habitable ponds occupied fit to the relationship, y = a(1−b<sup>x</sup>), R<sup>2</sup> = 0.70, F<sub>1,11</sub> = 28.6, p = 0.0002. Species designations as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0097387#pone-0097387-g001" target="_blank">Figure 1</a>.</p

    Design and Optimization of Selective Protein Kinase C θ (PKCθ) Inhibitors for the Treatment of Autoimmune Diseases

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    Protein kinase C θ (PKCθ) has a central role in T cell activation and survival; however, the dependency of T cell responses to the inhibition of this enzyme appears to be dictated by the nature of the antigen and by the inflammatory environment. Studies in PKCθ-deficient mice have demonstrated that while antiviral responses are PKCθ-independent, T cell responses associated with autoimmune diseases are PKCθ-dependent. Thus, potent and selective inhibition of PKCθ is expected to block autoimmune T cell responses without compromising antiviral immunity. Herein, we describe the development of potent and selective PKCθ inhibitors, which show exceptional potency in cells and in vivo. By use of a structure based rational design approach, a 1000-fold improvement in potency and 76-fold improvement in selectivity over closely related PKC isoforms such as PKCδ were obtained from the initial HTS hit, together with a big improvement in lipophilic efficiency (LiPE)
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