According to A.V. Satalkina [1], the Americans pointed out need remove excess water after concrete mixture was placed in a mold at beginning of century. I.N. Akhverdov [2] indicates that process cement paste compression with (W / C) =- 1.65 [W C] particles, displacing water, approach, and relatively low-pressure P = Po 0.065 MPa, solvation shells can touch * (The shell is flattened places mutua...

By using of combining theoretical model with empirical model, the nonlinear viscoelastic-plastic constitutive equations of soybean and cottonseed were developed on the basis of the creep test. The parameter inverse problem of constitutive model was proposed using improved particles swarm optimization. Numerical simulations of creep of soybean and cottonseed were carried out. The definition of c...

Previous studies have demonstrated that the ventrolateral region of the rat neostriatum is the site at which dopamine depletions produce profound motor deficits that interfere with food handling and lever pressing. In the present work, two experiments were undertaken to investigate the role of ventrolateral striatal dopamine in lever pressing. The first experiment was a detailed characterizatio...