The effect of this, however, could be ameliorated by adding extra species at the start and end of the flowering season. The plant species that could be used to future-proof margins against global warming are discussed.”
“The creep behavior of new polymers prepared by free radical polymerization of styrene-crosslinked resins obtained from linseed oil and derived wood flour (WF) composites have been analyzed. Results of short-time flexural creep tests at different temperatures are reported. The

effects of the wood flour content and temperature are discussed. The creep deformation is significantly reduced with the incorporation of wood flour, due Roscovitine concentration to the excellent fiber/matrix interaction. The creep strain was modeled using the creep power law and the Burgers models. The parameters were determined from the best fitting of the experimental data using a nonlinear optimization method. Although both models gave a good description of the viscoelastic creep of the materials,

the Burgers model was preferred because of its Emricasan ability to predict recovery. A master curve was built using the time temperature superposition principle, and the time shifts were well fitted using Arrhenius model. There was a good superposition of the short-term master curve and long-term data for samples tested at the same time after preparation. A reduction of the creep deformation was observed when the responses of samples tested after 2 and 5 years from preparation were compared, which was attributed to aging derived from

the oxidative crosslinking of linseed oil fragments in the network. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 2626-2633, 2011″
“Several experimental methods to measure ferroelectric hysteresis loops and to extract polarization values are compared for thin films with significant losses and different magnitudes of polarization. The analysis allows the determination of the most appropriate frequency VX-765 nmr range and technique to extract reliable values of the remanent polarization in materials with low polarization and high leakage. Examples include multiferroic YMnO(3) and Bi(0.9)La(0.1)NiMnO(6) thin films. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3555098]“
“Few models concern how environmental variables such as temperature affect community structure. Here, we develop a model of how temperature affects food web connectance, a powerful driver of population dynamics and community structure. We use the Arrhenius equation to add temperature dependence of foraging traits to an existing model of food web structure. The model predicts potentially large temperature effects on connectance. Temperature-sensitive food webs exhibit slopes of up to 0.01 units of connectance per 1 degrees C change in temperature. This corresponds to changes in diet breadth of one resource item per 2 degrees C (assuming a food web containing 50 species).