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Following several tragic chemical accidents that have occurred in recent years, some directives concerning chemical process safety have been issued. The Seveso directive, for example, requires a precise description of the consequences of a possible chemica ...
Two to four pseudo-generation aliphatic hyperbranched polymers (HBPs) with OH end-groups have been solution processed with various types of montmorillonite (MMT) layered alumino-silicate clays, and carefully dried to produce solid HBP/MMT nanocomposites. ...
Dispersive mixing of high viscosity ratio blends was studied in a converging flow using a capillary rheometer equipped with dies having different entry profiles. Three inhomogeneous bimodal polyolefin blends, with stress-dependent viscosity ratios ranging ...
We report extensive molecular-dynamics-simulation results for binary mixtures of hard spheres for different size disparities and different mixing percentages, for packing fractions up to 0.605, and over a characteristic time interval spanning up to 5 order ...
Conditions have been developed for the multicomponent synthesis of di- and tetrapeptide based on the unique reactivity of alpha -isocyanoacetic acids (including its alpha -substituted derivs.) by an Ugi four-component, five-center reaction. Simply mixing a ...
The runner blade-to-blade shear flow turbulent mixing characteristics in the cone of a Francis turbine scale model are investigated by using the 3D PIV Technique. From the experimental flow survey, the periodic component of the instantaneous velocity field ...
International Association For Hydraulic Research2004
The aims of the preliminary study reported in this document were twofold. Firstly, within the context of the application of UHPFRC for the rehabilitation of reinforced concrete structures, to identify the phenomena that require further study with respect t ...
Tracers released into the pelagic, stratified center of lakes, show that interior mixing - based on both mode-related internal shear and higherfrequency internal waves â is extremely weak. After horizontal spreading, the tracers "feel" the local bottom ...
Any innovative design of a chem. or biol. reactor has to consider the dynamics of the primary phys. and chem. steps involved in the overall process. For homogeneous highly viscous systems the mixing time is of crucial importance for the product quality. In ...
Five bonds form in one pot, from three well-designed yet readily accessible substrates. Simply mixing an o-alkynyl aniline, e.g., 2-H2NC6H4C==CCO2Me, an aldehyde, e.g., heptanal, and ammonium chloride in toluene at room temp., followed by addn. of an isocy ...
