System characterization

One way to view the data in Table 14.7 is to treat it as a single system, characterized by a global mean, X, and a global variance, s. These parameters are calculated using the following equations. [Pg.693]

System Characterization. After all the components are assembled to produce a dmg dehvery system, extensive testing is performed to ensure that the performance and stabiUty of the dmg dehvery system meet specifications. [Pg.234]

In the systems characterized by more complex surface structure, consisting of patches of different size and different magnitude of the boundary field, the properties of adsorption isotherms have been found to depend on the... [Pg.270]

Leung, J. C. and Fauske, H. K, Runaway System Characterization and Vent Sizing Based on DIERS Methodology, Plant Operations Progress, V. 6, No. 2, 1987, p. 77. [Pg.543]

Figure 12-2. Temperature dependent j l0 characteristics for injection into a hopping system characterized by A=0.4eV and a=0.08eV (Ref. 1211).

It is obvious, and verified by experiment [73], that above a critical trap concentration the mobility increases with concentration. This is due to the onset of intertrap transfer that alleviates thermal detrapping of a carrier as a necessary step for charge transport. The simulation results presented in Figure 12-22 are in accord with this notion. The data for p(c) at ,=0.195 eV, i.e. EJa—T), pass through a minimum at a trap concentration c—10. Location of the minimum on a concentration scale depends, of course, on , since the competition between thermal detrapping and inter-trap transport scales exponentially with ,. The field dependence of the mobility in a trap containing system characterized by an effective width aeff is similar to that of a trap-free system with the same width of the DOS. [Pg.210]

According to our analytical results on the solid-state redox reaction of LiNi02 based on the phenomenological expression for solid-state redox potentials of insertion electrodes [23], the reaction consists of three redox systems characterized by potentials of 4.23, 3.93, and 3.63V with re-... [Pg.330]

A basic premise in receptor pharmacology is that all drugs have affinity for receptors (the chemical property that unites the dmg with the receptor), and some drugs have efficacy, the chemical property that causes the receptor to change its behavior toward its host cell. Drugs that have efficacy can produce concentration-dependent responses in physiological systems, characterized by a concentration-response curve (also often referred to as a dose-response cuive). [Pg.450]

We calculated the melting temperature of a system characterized by predetermined values of parameters fi, y and N from the thermodynamic condition... [Pg.222]

Calderbank and Moo-Young (C5) have studied gas-liquid mass transfer in systems characterized by high viscosities and high diffusion coefficients, and have on the basis of data obtained in this and other studies developed correlations for the mass-transfer coefficients. [Pg.121]

Though increased G nucleophilicity tends to decrease the rate of transfer, it is also expected to increase the rate of termination. For the systems characterized by AEmv = —1.8 1.0 kcal/mole, however, transfer is negligible and termination controls molecular weights. [Pg.147]

The El-Niho southern oscillation (ENSO) phenomenon is an interannual perturbation of the climate system characterized by a periodic weakening of the trade winds and... [Pg.233]

For comparable diffusion coefficients of the target solute in the two phases and nonlimiting transfer kinetics, systems characterized by different should be resolvable on the basis of transient and steady-state current responses to a value of up to 50 at practical tip-interface separations. If the diffusion coefficient in phase 2 becomes lower than that in phase 1, diffusion in phase 2 will be partly limiting at even higher values of K. On the other hand, as the value of y increases or interfacial kinetics become increasingly limiting, lower values of suffice for the constant-composition assumption for phase 2 to be valid. [Pg.313]

Tardive dyskinesia A chronic disorder of the nervous system characterized by involuntary jerky or writhing movements of the face, tongue, jaws, trunk, and limbs, usually developing as a late side effect of prolonged treatment with antipsychotic drugs. [Pg.1577]

General. In this section, a mathematical dynamic model will be developed for emulsion homopolymerization processes. The model derivation will be general enough to easily apply to several Case I monomer systems (e.g. vinyl acetate, vinyl chloride), i.e. to emulsion systems characterized by significant radical desorption rates, and therefore an average number of radicals per particle much less than 1/2, and to a variety of different modes of reactor operation. [Pg.222]

K. Mobius, A. Savitsky, A. Schnegg, M. Plato and M. Fuchs, High-field EPR spectroscopy applied to biological systems Characterization of molecular switches for electron and ion transfer, Phys. Chem. Chem. Phys., 2005, 7, 19. [Pg.165]

Let us start by considering an. /V-particle reference system described by the Hamiltonian. (x, p , j, which is a function of 3N Cartesian coordinates, x, and their conjugated momenta p,. We are interested in calculating the free energy difference between this system and the target system characterized by the Hamiltonian... [Pg.34]

Here we present and discuss an example calculation to make some of the concepts discussed above more definite. We treat a model for methane (CH4) solute at infinite dilution in liquid under conventional conditions. This model would be of interest to conceptual issues of hydrophobic effects, and general hydration effects in molecular biosciences [1,9], but the specific calculation here serves only as an illustration of these methods. An important element of this method is that nothing depends restric-tively on the representation of the mechanical potential energy function. In contrast, the problem of methane dissolved in liquid water would typically be treated from the perspective of the van der Waals model of liquids, adopting a reference system characterized by the pairwise-additive repulsive forces between the methane and water molecules, and then correcting for methane-water molecule attractive interactions. In the present circumstance this should be satisfactory in fact. Nevertheless, the question frequently arises whether the attractive interactions substantially affect the statistical problems [60-62], and the present methods avoid such a limitation. [Pg.343]

The importance of temperature-controlled scanning calorimetry for measurements of heat capacity and of scanning transitiometry for simultaneous caloric and pVT analysis has been demonstrated for polymorphic systems [9]. This approach was used to study an enantiotropic system characterized by multiphase (and hindered) transitions, the role of heat capacity as a means to understand homogeneous nucleation, and the creation of (p, T) phase diagrams. The methodology was shown to possess distinct advantages over the more commonly used combination of characterization techniques. [Pg.265]

Hagen, W.R. 1982b. EPR of non-Kramers doublets in biological systems characterization of an S = 2 system in oxidized cytochrome c oxidase. Biochimica et Biophysica Acta 707 82-98. [Pg.234]

D.C. Duffy, H.L. Gillis, J. Lin, N.F. Sheppard Jr, and G.J. Kellogg, Microfabricated centrifugal microfluidic systems characterization and multiple enzymatic assays. Anal. Chem. 71, 4669-4678... [Pg.402]

For the case of interest, copolymerization dynamics is described by nonlinear equations (Eq. 62) where variable plays the role of time, supplemented by the thermodynamic relationship (Eq. 63). The instantaneous state of the system characterized by vector X may be represented by a point inside the unit interval X + X2 = 1. The evolution of composition X in the course of... [Pg.178]

Considering theoretically a copolymerization on the surface of a miniemulsion droplet, one should necessarily be aware of the fact that this process proceeds in the heterophase reaction system characterized by several spatial and time scales. Among the first ones are sizes of an individual block and macromolecules of the multiblock copolymer, the radius of a droplet of the miniemulsion and the reactor size. Taking into account the pronounced distinction in these scales, it is convenient examining the macrokinetics of interphase copolymerization to resort to the system approach, generally employed for the mathematical modeling of chemical reactions in heterophase systems [73]. [Pg.182]

Patients who have received neuroleptics for long periods of time may develop a hyperkinetic disorder of the extrapyramidal system characterized by involuntary, purposeless movements affecting many parts of the body. This is known as tardive dyskinesia. Most commonly, these are manifested in a syndrome involving abnormal movements of the tongue, mouth and masticatory muscles. There are also choreoathetoid movements of the extremities. The mechanism by which these symptoms develop remains unknown. [Pg.777]

By way of illustration consider a binary composite system characterized by extensive parameters Xk and Xf in the two subsystems and the closure condition Xk + X k — Xk. The equilibrium values of Xk and X k are determined by the vanishing of quantities defined in the sense of equation (3) as... [Pg.422]

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