This is close to the published values of the activation energy of self-diffusion of molecules Δ s =270–330 K. It is natural to conjecture that the diffusion of positive changes, like the self-diffusion of molecules, is controlled by their interaction with vacancies....
Major movements that involve the balance and amount of solutes in the whole soil profile, including plant uptake and drainage losses, are treated in chapter 11. The process of diffusion results from the random thermal motion of ions, atoms or molecules. Consider a long column of unit cross-...
is the endocytosis of large solid particles from the extracellular environmnet active transport movement of molecules across the cell membrane using ATP ENERGY; requires energy -movement of chemicals from low concentration to high concentration against the concentration gradient ...
Cellular cargos move bidirectionally on microtubules by recruiting opposite polarity motors dynein and kinesin. These motors show codependence, where one requires the activity of the other, although the mechanism is unknown. Here we show that kinesin-3 K
1997: RNA movement between the nucleus and the cytoplasm Current Opinion in Genetics and Development 7(2): 212-219 Goldstein, L. 1974: Movement of molecules between nucleus and cytoplasm Busch, Harris (Ed ) The Cell Nucleus, Vol I Xxiii+667p Illus Academic Press, Inc : New York, N Y ...
The movement of solutes into plants can and should be expressed in terms of the specific free energies of the solute molecules. Similar expressions have been developed for the flow of water. The mathematical relation between the specific free energies of the solute and the water in solutions and...
Another measure applicable in rice paddies to reduce the risk of herbicide transfer to water bodies could be the choice of other less mobile molecules. When planning the mitigation measures it should also be advisable to consider the risk of heavy rain events, which represent one of the most ...
The latter can have a dynamical component stemming from the motion of water molecules at the water-soil or water–ice interfaces (Vugmeyster et al., 2012). Interfacial interactions at grain/pore surfaces are critical for sustaining liquid water (Vugmeyster et al., 2012). Furthermore, the ...
1.The lower the temperature, the slower the motion of the molecules.温度越低,分子运动越慢。 2.The molecules of gases move more freely than do those of liquids and solids.气体分子运动比液体分子和固体分子运动更为自由。 3.Micronozzle flow based on simulation of molecule movement基于分子运动模拟...
A theoretical expression is derived for the Kerr constant of a gas at low pressures using a general expression for the energy of a molecule in a strong ele... AD Buckingham,JA Pople - 《Optical Electric & Magnetic Properties of Molecules》 被引量: 139发表: 1997年 Theoretical studies of the...