Particle apparent

It had been known since 1941 that red blood-cells are agglutinated by fluids containing influenza virus. In 1942, G. K. Hirst proved that purified influenza virus is quickly and quantitatively adsorbed on red cells, but that, after the elapse of several hours, the virus particle, apparently intact, has come off the surface of the red cells. After this treatment, cells were unable to be agglutinated by influenza virus or to adsorb virus particles. The problem of the interaction of influenza virus with red cells was attacked in a comprehensive manner by Sir Macfarlane Burnet and his coworkers in Melbourne in the period of... 

Macroporous cation exchangers, 14 387 Macroporous gels, 13 738 Macroporous molecular sieves, 16 849 Macroporous particles, apparent effective diffusivity and, 15 730 Macroporous resins, 14 393, 397 Macroreticular sulfonated styrene-... 

Micropore diffusion, 1 596, 597-599 Microporous catalysts, in bisphenol A manufacture, 14 420 Microporous metal membranes, 15 813t Microporous particles, apparent effective diffusivity and, 15 729-730 Microporous range, pore diameters within, 16 812... 

The breakdown of these particles apparently caused by melting of the small crystalline segments in PVC causes the change of morphology observed. 

This is an equation for a straight line, the slope of which is 2R /t, and describes the plots in Figure 8. From the experimental slopes one may calculate the half-life, T, and the Fuchs stability factor, W. These values are given in Table III. They confirm that coagulation is an important process in determining particle size and number from the outset. With no surfactant present the particles apparently have a net attraction for each other (W < 1), and disappear with a half-life on the order of four milliseconds. As surfactant concentration is increased it... 

Particle bounce. When particles bounce off the collection surface, they may be carried to subsequent stages, where they may stick or again bounce off. The result is that subsequent stages collect more mass than is appropriate, and the inferred particle-size distribution is biased towards the smaller particles. Apparently, because of increasing velocity, particles that bounce off one stage continue to bounce off the subsequent stages and are finally collected on the afterfilter. As discussed below, such collection can severely limit the utility of afterfilter data. Typically, sticky substances are applied to impaction surfaces to reduce particle bounce. Compounds that can be "wicked" by the collected particles tend to be the most effective. 

Description of the hydrodynamics in the cylindrical capillary experimental design is fairly simple. Considering only electrostatic and fluid frictional forces acting upon the suspended particles, apparent particle mobility at a given location r across the diameter of the capillary may be represented by a solution to the Navier-Stokes equation in the scheme of a coordinate system with the origin in the center of the capillary by... 

Filament-type coke was produced from acetylene in the range 400°-600°C this coke contained nickel atoms or particles. Apparently nickel granules were lifted from the surface as a result of the coke formation. 

In order to investigate the mass-loss process of the particle, apparent rate coefficients from a first-order expression were obtained. The following expression was applied ... 

Drug particle Apparent contact area ------Excipient particle... 

The virtual mass effect relates to the force required for a particle to accelerate the surrounding fluid [65, 170, 26]. When a particle is accelerated through a fluid, the surrounding fluid in the immediate vicinity of the particle will also be accelerated at the expense of work done by the particle. The particle apparently behaves as if it has a larger mass than the actual mass, thus the net force acting on the particle due to this effect has been called virtual mass or added mass force. The steady drag force model does not include these transient effects. 

Figure 24b indicates that MMT particles were not uniformly coated with the PPY particles apparently because of the poor yield of PPY in the system. The TEM photograph of a nanocomposite with high PPY loading (Fig. 24c) revealed relatively thicker and non-uniform coating of PPY on the MMT particles. In fact, a clear separation of well formed spherical particles was not distinguishable as... 

When the solubility limit of water in the fluid is approached or exceeded, the reaction rates drop drastically [13,21]. The liquid water in the enzyme particles apparently forms a mass-transfer barrier. It has also been noted that enzyme particles tend to stick together when the optimum water concentration is exceeded [45]. Obviously this reduces the enzyme area that is accessible to substrates. 

Apparent Density-Apparent density is the mass per unit volume of a fertilizer, exchicting voids between particles. Apparent density is not a property that is measured frequently, but it has been of special... 

The absolute value of the charge measured after switching off the electric field (Table VII. 1) was very small and little different from the charge observed upon detachment of particles from a surface that had not been exposed to an electric field. On this basis, we can assume that at the time of measurement there was no longer any polarization charge of the particles. Apparently, elastic rather than bulk polarization takes place during the time of field application (3 min), and the lifetime of this effect after the field is switched off is only 10" sec i. e., the polarization charge on the particle surface exists only in the electric field. 

Manufacturers information for polymer/liquid combinations is often insufficient for conservation purposes and tests must therefore be carried out. A known weight of the solid polymer is placed in the test liquid to form a 20-40% solution, which only half fills the container 10 ml is adequate. The closed container is agitated for 24 hours. At the end of the 24 hours, the container is inspected and the liquid placed in one of three classes solvent, borderline and non-solvent. A totally clear solution implies that the liquid is a solvent. A turbid liquid implies that the liquid is borderline. If the liquid is in two phases, e.g. has solid particles apparent or has separated into two layers, the liquid is classed as a non-solvent. 

To gain an insight into how such reductions can be achieved it is important to consider how dust clouds are generated, and how they move or can be moved. Much of this pollution can be clearly seen, and the picture of particles apparently floating in the air may be one impression gained. However, floating in the classical sense is certainly not possible since buoyancy offered by the displacement of air by the particle would be insufficient to support the weight of that particle (Fig. 4). This absence of buoyancy means that the motion of the particle is likely to have a measure of independence of that of the air around it, a characteristic which must have profound implications for dust control. 

The bed voidage at minimum fluidization conditions is the average value of the fraction of the bed volume occupied by gas at minimum fluidization conditions. Three different techniques are available to measure the bed voidage at minimum fluidization conditions. The first technique uses the experimental value of the minimuon fluidization velocity. It also requires knowledge of the fluidizing fluid properties, the particle apparent density, the Sauter mean particle diameter and the particle shape factor. The... 

Organically modified basic zinc phosphates. An organic component is fixed onto the surface of basic zinc phosphate particles, apparently to improve compatibility with alkyd and physically drying resins. 

Whether RNA is a branched molecule still remains unknown. The evidence indicates a linear, highly asymmetric molecule capable of fiber formation. If there are any branches they are short. The RNA particle apparently grows by aggregation of chains rather than branching as in the ramified glycogen molecule. 

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