We found that increased convective transport rate within inorganic matrix expedited upstream pressure decline; conversely, increased mass-exchange rate and desorption-rate coefficients slowed down upstream pressure decline in the short term, but expedited it in the long term, when convective transport within inorganic matrix was fast.
In addition, as a carbides forming element, tantalum would reduce the carbon diffusion coefficient and slow down the austenitic transformation rate.
He was awarded his Doctor of Philosophy (Ph.D). in physics in 1924, the first year in which CalTech awarded this degree, for his thesis on "the absorption coefficient for slow electrons in gases".
Adaptation was modeled as decaying synaptic coefficient with slow adaptation.
The parameters for the fast/slow model were the following: "fast" diffusion coefficient D1, "slow" diffusion coefficient D2, probability Kon of transition from D1 to D2, and probability Koff of transition from D2 to D1.
The ADC is sensitive to all intravoxel incoherent motions and equals the diffusion coefficient D slow if only molecular diffusion is present.
24 patients (13 high grade gliomas and 11 low grade gliomas) underwent IVIM DWI and 3D pCASL imaging before operation; maps of fast diffusion coefficient (D∗), slow diffusion coefficient (D), fractional perfusion-related volume (f), and apparent diffusion coefficient (ADC) as well as cerebral blood flow (CBF) were calculated and then coregistered to generate the corresponding parameter values.
They concluded by application of the bi-exponential model that the molecular diffusion coefficient D slow and microperfusion fraction f are useful parameters for the characterisation of hepatic lesions.
The higher the pressure coefficient, the slower the compaction rate.
(4 where w is the inertia coefficient which slows velocity over time; v n is the particle velocity; p n is the current particle position in the search space; pBest n and gBest n are defined as the "personal" best and global best; rand is a random number between (0, 1); c 1 and c 2 are the acceleration coefficients.
