Water scarcity is a central issue constraining productivity in most grassland ecosystems [ 12, 29, 30, 35], and can drastically affect photosynthesis at various levels, from molecular through biochemical/physiological to individual aspects [ 3, 15, 22].
Organisms where the central pair rotates during axonemal beating, such as Chlamydomonas, have different phenotypes in mutants that affect the central pair to those organisms where the central pair is constrained.
The European Central Bank is constrained by politics and its own narrow sense of mission.
That has constrained central banks from easing monetary policy as much as they might have done, particularly in Britain and the euro zone.
The two countries also share the experience of running big, expensive, religious, materialistic and messy democracies in which central governments are constrained by powerful states.America is now one of India's biggest weapons suppliers.
And continuing to cut rates in coming months -- especially in half-point increments -- could leave the United States approaching the bind that is bedeviling Japan, where official interest rates are close to zero, leaving Japan's central bank severely constrained in its ability to fight a continuing recession.
Stiffness of the actuating SPS branches and the constrained central strut is constructed.
The 2PET model substrate was docked using GOLD 5.1 with its central ester bond constrained between 2.7 and 3.1 Å in the oxyanion hole formed by the main chain NH groups of F62 and M131 (broken yellow lines).
Eichengreen and others who have studied economic data from the Great Depression, another time central banks were constrained, found the drag from a tightening of fiscal policy was much higher at the time.
The docking procedure consisted of rigid body docking of terminal core fragments, central loop closure, constrained all-atom refinement of the core segment, and extension of the core segment.
