Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Functionalization uniform

The chemical plant will be first decomposed to its subsystems of unit operations with functional uniformity and common objectives in terms of economics, operation and control. Within each subsystem resulting from the decomposition of the overall plant, we employ the same general approach described in the previous section to (a) classify the plant constraints at the current optimum, into active and inactive ones (b) select the controlled variables for the decentralized subsystem controllers (c) select the manipulated variables for each subsystem (d) establish the initial search direction (ISD) to achieve feasibility and (e) to define the resulting new search directions (NSD) that will ultimately lead to the new optimum operation. [Pg.209]

The variability of physical properties widens both the dimensional x- and the dimensionless pi-space. The process is not determined by the original material quantity x, but by its dimensionless reproduction. (Pawlowski [27] has clearly demonstrated this situation by the mathematical formulation of the steady-state heat transfer in an concentric cylinder viscometer exhibiting Couette flow). It is therefore important to carry out the dimensional-analytical reproduction of the material function uniformly in order to discover possibly existing, but under circumstances concealed, similarity in the behavior of different substances. This can be achieved only by the standard representation of the material function [5, 27]. [Pg.48]

Recently, Do and co-workers [6-10] have proposed a very simple method but it does reveal the mechanistic pictures of what are occurring in pores of different size. The process of adsorption in miy pore is viewed as follows. Molecules in pore are constantly in motion but statistically there is a spatial distribution of these molecules due to the interactive forces between them and the surface atoms. We treat this spatial distribution as a step function uniformly high density near the surface and uniformly low density in the inner core of the pore. Due to the long range interaction of the surface, the pressure of the fluid in the inner core is not the same as that in the bulk phase. Assuming a Boltzmann distribution, the pressure of the inner core is related to the bulk fluid as... [Pg.4]

Briefly, the Bessel function uniform expression is generated from the primitive semiclassical expression... [Pg.96]

Though this multistage modification on polymer is performed with improved homogeneity compared to the first one, whose functional heterogeneity had been only very roughly estimated, both of the examples demonstrate that the finally modified support will under no circumstances exhibit functional uniformity. The possibilities of handling a cross-linked polymer like a conventional chemical in a projected pathway of synthetic operations are limited, since each deviation like side reactions and incomplete conversions remains fixed to the insoluble support. In addition, small quantities of functional sites (< 10%) are scarcely detectable by IR spectroscopy and are hard to analyze by conventional methods of organic chemistry. [Pg.28]

Good quality polymers are obtained by direct functionalization with the resulting functionality uniformly distributed throughout the bead. However, there are other factors that influence the quality of the polymer. As mentioned by... [Pg.6404]

S. Send, S. T. Camli, M. Tuned and A. Tuned, Nucleotide adsorption-desorption behaviour of boronic acid functionalized uniform-porous particles,/. Chromatogr. B, 2002, 769(2), 283-295. [Pg.355]

Let v x) be the perceived value function uniformly distributed between [v q - i), v q + j)]. The fraction of customers whose perceived value is greater than rp, or simply the customer acceptance rate for refurbished products, can be calculated as follows ... [Pg.239]

In the systematic approach, the contaminated signal was processed using transients with parameters selected from a uniformly sampled grid in the parameter space. For each parameter value, the quality of the processed signal was computed. An example result is presented in Figure 2 which shows the performance as a function of the two parameters and / p. The parameter values /, and which yielded the lowest entropy were selected for processing. [Pg.91]

FbwO) is the Fourier transformation of effective beam width as a function of spatial frequency / Fuff) is the MTF of the XRll. Because of the XRll windows curvature, projection data must be transformed to obtain uniform pixel spacing, described by Errors in object centre... [Pg.212]

In the strictest meaning, the total wave function cannot be separated since there are many kinds of interactions between the nuclear and electronic degrees of freedom (see later). However, for practical purposes, one can separate the total wave function partially or completely, depending on considerations relative to the magnitude of the various interactions. Owing to the uniformity and isotropy of space, the translational and rotational degrees of freedom of an isolated molecule can be described by cyclic coordinates, and can in principle be separated. Note that the separation of the rotational degrees of freedom is not trivial [37]. [Pg.553]

Knudseci s very careful experiments on a long uniform capillary show that N L/ Pj -p ) passes through a marked minimum when plotted as a function of (P +P2)/2, at a value of the mean pressure such that the capillary diameter and the mean free path length are comparable. At higher values of the mean pressure, N L/(pj " 2 rises linearly, as in the case of a porous medium. [Pg.55]

In the Couette flow inside a cone-and-plate viscometer the circumferential velocity at any given radial position is approximately a linear function of the vertical coordinate. Therefore the shear rate corresponding to this component is almost constant. The heat generation term in Equation (5.25) is hence nearly constant. Furthermore, in uniform Couette regime the convection term is also zero and all of the heat transfer is due to conduction. For very large conductivity coefficients the heat conduction will be very fast and the temperature profile will... [Pg.163]

By virtue of the uniform convergence of Pm there exists a function such that X G for all m. Substituting this function in (2.137) as Xm implies... [Pg.111]


See other pages where Functionalization uniform is mentioned: [Pg.50]    [Pg.237]    [Pg.564]    [Pg.435]    [Pg.1360]    [Pg.208]    [Pg.3]    [Pg.8]    [Pg.311]    [Pg.607]    [Pg.6]    [Pg.29]    [Pg.623]    [Pg.32]    [Pg.50]    [Pg.237]    [Pg.564]    [Pg.435]    [Pg.1360]    [Pg.208]    [Pg.3]    [Pg.8]    [Pg.311]    [Pg.607]    [Pg.6]    [Pg.29]    [Pg.623]    [Pg.32]    [Pg.90]    [Pg.267]    [Pg.268]    [Pg.326]    [Pg.655]    [Pg.554]    [Pg.474]    [Pg.261]    [Pg.150]    [Pg.261]    [Pg.127]    [Pg.773]    [Pg.322]    [Pg.561]    [Pg.105]    [Pg.141]    [Pg.146]    [Pg.176]    [Pg.287]    [Pg.288]   
See also in sourсe #XX -- [ Pg.28 ]




SEARCH



Complete Uniform Distribution Function

Distribution functions uniform

Functional Uniformity within the CYP79 Family

Incomplete Uniform Distribution Function

Pair correlation function, uniform fluids

Uniform density limit energy functionals

© 2024 chempedia.info