Simultaneous measurements of leaf resistance to gaseous flow, rate of transpiration and rate of carbon dioxide exchange were made with the main object of investigating the effects of severing the ...

Somatic embryogenesis can be induced in the leaves of cork oak (Quercus suber L.) trees. The use of this propagation system in multivarietal forestry requires the mass production of cloned plants at ...

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Gas exchange or respiration takes place at a respiratory surface; a boundary between the external environment and the interior of the body. For unicellular organisms the respiratory surface is simply ...

Whether it is nitrogen for cleaning weapons and night vision devices, oxygen and acetylene for welding and torch operations, or tetrafluoroethane to keep air conditioning systems blowing cold, ...