FACTOID # 175: Canadians drink more fruit juice than the citizens of any other nation - more than one litre each, every week.
 
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Encyclopedia > Thermal motion

thermal is related to heat, and motion means moving. Basically, thermal motion means moving will produce heat. This defintion seems not scientific, but it does say the basic meaning. Let us use an example of nuclear reaction. The PP (proton-proton) combination will produce energy like p + p -> 2 H + e+ + n + .42 MeV.


  Results from FactBites:
 
Molecular motion and protein folding (2505 words)
Thermal motion - displacement of functional groups - is necessary for protein catalysis (high substrate specificity and transition state stabilization) and allostery (transmit information to other units in a protein complex).
Thermal motion produces a random walk of every atom in a structure and steric hindrance restricts the calculation to allowed conformations as determined by the torsion angle plot of proteins (Ramachandran plot).
This difference in time scale of substrate diffusion and protein motion is important for all enzymatic activities as shown for hemoglobin, where the static structures of the T and R state show no energetically favorable pathway for oxygen to diffuse to and away from the heme group.
Brownian motion - Wikipedia, the free encyclopedia (1641 words)
The Brownian motion of particles in a liquid is due to the instantaneous imbalance in the force exerted by the small liquid molecules on the particle.
Brownian motion is related to the random walk problem and it is generic in the sense that many different stochastic processes reduce to Brownian motion in suitable limits.
For a particle experiencing a brownian motion corresponding to the mathematical definition, the equation governing the time evolution of the probability density function associated to the position of the Brownian particle is the diffusion equation, a partial differential equation.
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