Self-leveling effect

PLA exhibits strain hardening when stretched beyond its natural stretch ratio. This self-leveling phenomenon is desirable for blow molding of preforms to minimize wall thickness variation. To exploit the self-leveling effect, the preform must be designed to match the target bottle size and... 

The pivotal role that superplasticizers play in the formulation of self-leveling mortars is due to the dramatic effects they produce on flow behavior. Such effects are believed to be derived by the adsorption of the admixture on the surfaces of cement grains, thereby providing surfaces of a similar or zero charge which are mutually repulsive. They thus fully disperse cement particles, freeing more water for lubrication and reducing interparticle attraction. Both yield stress and plastic viscosity are decreased and the decrease is greater for yield stress it may be completely eliminated if sufficient admixture is added so that Newtonian behavior is observed (Fig. 7.25) [75, 76]. 

Suppression of heroin self-administration in opioid-dependent volunteers has been found to be greater at doses over lOOmg (Donny et al. 2005), and this relates to the three-level effects of methadone, the implications of which we often have to contend with in our discussions with patients. Basically low doses of methadone will suppress opiate withdrawal symptoms in dependent individuals, and this is what a lot of patients mean when they say that their dose (which may be considered too low by us) holds them. In medium to high levels of methadone there is less craving for opiates, and then at the highest doses there will be full narcotic blockade (Donny et al. 2002), but as already indicated the users themselves may not wish to take such dosages. 

The linear photoresponse of metal clusters was successfully calculated for spherical [158-160, 163] as well as for spheroidal clusters [164] within the jellium model [188] using the LDA. The results are improved considerably by the use of self-interaction corrected functionals. In the context of response calculations, self-interaction effects occur at three different levels First of all, the static KS orbitals, which enter the response function, have a self-interaction error if calculated within LDA. This is because the LDA xc potential of finite systems shows an exponential rather than the correct — 1/r behaviour in the asymptotic region. As a consequence, the valence electrons of finite systems are too weakly bound and the effective (ground-state) potential does not support high-lying unoccupied states. Apart from the response function Xs, the xc kernel /xc[ o] no matter which approximation is used for it, also has a self-interaction error. This is because /ic[no] is evaluated at the unperturbed ground-state density no(r), and this density exhibits self-interaction errors if the KS orbitals were calculated in LDA. Finally the ALDA form of /,c itself carries another self-interaction error. 

Conductive floors provide effective control of static electricity Available in the form of screeds, self-levelling floors and floor coatings Water resistant... 

Additive for liquid and powder coating formulations (less brittle, self-levelling, high/low T stability, scratch and mb resistance, transparency, sur ce effects above)... 

Thermal Modeling A key stumbling block in the roadmap of 2.5-D integration is excessive heat generation in the 2.5-D stack and the rather limited ability for heat removal. Thus analysis tools have to be developed to precisely quantify the thermal effects in 2.5-D ICs. With these tools, designers could derive a temperature profile at different abstractions levels. The thermal distribution information would enable calculation of the mean time to failure (MTTF) and the self-heating effect... 

The spherical jellium model has been applied to alkali metal clusters by many authors (see Ref. [6]). Fig. (1) shows the self-consistent effective potential for a sodium cluster with twenty atoms. The degenerate levels are filled up to electron number = 20. In a spherical cluster with 21 electrons, the last electron will have to occupy the If level above (dashed line). This electron is less... 

Measurements of the diffusion coefficient under various As-vapour pressures revealed that As self-diffusion was dominated by As self-interstitials. Annealing experiments performed on variously doped samples gave no indication of a Fermi-level effect, and it was concluded that As self-diffusion was governed mainly by neutral defects. The results for As self-diffusion at 900 to llOOC could be described by ... 

Rols, S., Ambroise, J., Pera, J. (1999) Effects of different viscosity agents on the properties of self-levelling concrete . Cement and Concrete Research, 29 261-66. 

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