Internal Temperatures of Plants

Internal temperatures and cooling of neutron stars with accreted envelopes

The relationships between the effective surface (Teff ) and internal temperatures of neutron stars (NSs) with and without accreted envelopes are calculated for Teff > 5 × 104 K using new data on the equation of state and opacities in the outer NS layers. We examine various models of accreted layers (H, He, C, O shells produced by nuclear transformations in accreted matter). We employ new Opacit...

Impacts of chilling temperatures on photosynthesis in warm-climate plants.

Photosynthesis in warm-climate plants is substantially reduced after chilling. Tropical and subtropical species offer the opportunity to study the effects of low temperature on photosynthetic processes undisguised by the myriad of protective responses observed in temperate species. In this article, we highlight the primary components of photosynthesis that are affected by a short chill, in both...

Changes in stem diameter of herbaceous and woody plants as a measure of internal water balance

Underwater Photosynthesis and Internal Aeration of Submerged Terrestrial Wetland Plants

Submergence impedes plant gas exchange with the environment. Survival depends upon internal aeration to provide O2 throughout the plant body, although short-term anoxia can be tolerated. During nights, plants rely on O2 entry from the floodwater and pO2 in roots declines so that some tissues become severely hypoxic or even anoxic. Underwater photosynthesis is the main daytime O2 source and also...

Internal Stability of Dynamically Quantised Control for Stochastic Scalar Plants

In this paper we study conditions under which an unstable stochastic scalar linear plant with unbounded noise can be internally stabilised using ‘zooming’-like coding and control schemes having dynamic, finite-dimensional internal states. Such structures are known to be needed in communicationconstrained control when no bound on the plant noise is available. However, previous schemes were based...