Hysteretic damping

The modulus reduction and damping curves represent the nonlinear behavior of soil under cyclic load. In the literature, those curves were produced from lab tests of soil at particular confining stresses. This study developed a set of parameters that can be used to normalize the modulus reduction and damping curves to be stress-independent.

16p vifilm 24-09-2024 3 2   Download

Steady-state kinetics for the hydrolysis of benzoylcholine (BzCh) and benzoylthiocholine (BzSCh) by wild-type humanbutyrylcholinesterase (BuChE) andby theperipheral anionic site mutant D70G were compared.kcat /Kmfor the hydrolysis of BzSChwas 17-foldand32-fold lower than that for hydrolysis of BzChbywild-type andD70G, respectively. The rate-limiting step for hydrolysis of BzCh was deacyla-tion, whereas acylation was rate-limiting for hydrolysis of BzSCh.

15p dell39 03-04-2013 37 3   Download

The purpose of this work was to study the catalytic properties of rat buty-rylcholinesterase with benzoylcholine (BzCh) and N-alkyl derivatives of BzCh (BCHn) as substrates. Complex hysteretic behaviour was observed in the approach to steady-state kinetics for each ester. Hysteresis consisted of a long lag phase with damped oscillation.

13p inspiron33 26-03-2013 42 4   Download