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Random factors

Entropy is often described as a measure of disorder or randomness. While useful, these terms are subjective and should be used cautiously. It is better to think about entropic changes in terms of the change in the number of microstates of the system. Microstates are different ways in which molecules can be distributed. An increase in the number of possible microstates (i.e., disorder) results in an increase of entropy. Entropy treats tine randomness factor quantitatively. Rudolf Clausius gave it the symbol S for no particular reason. In general, the more random the state, the larger the number of its possible microstates, the more probable the state, thus the greater its entropy. [Pg.453]

Radioactivity The ability possessed by some natural and synthetic isotopes to undergo nuclear transformation to other isotopes, 513 applications, 516-518 biological effects, 528-529 bombardment reactions, 514-516 diagnostic uses, 516t discovery of, 517 modes of decay, 513-514 nuclear stability and, 29-30 rate of decay, 518-520,531q Radium, 521-522 Radon, 528 Ramsay, William, 190 Random polymer 613-614 Randomness factor, 452-453 Raoult s law A relation between the vapor pressure (P) of a component of a solution and that of the pure component (P°) at the same temperature P — XP°, where X is the mole fraction, 268... [Pg.695]

We see that there is a much greater energy rise when a mole of I2 dissolves in CCU than when a mole of I2 dissolves in alcohol. Thus the energy factor (favoring the crystal) that opposes the randomness factor (favoring solution) is much... [Pg.166]

Assuming the randomness factor is about the same, the gas with the larger heat effect (favoring dissolving) should have the higher solubility. The measured solubilities at one atmosphere pressure and 20°C of oxygen and nitrous oxide in water are, respectively, 02, 1.4 X 10-3 mole/liter and N20, 27 X 10-3 mole/liter, consistent with our prediction.. [Pg.167]

Intermolecular forces are attractive or repulsive forces between atoms, molecules, and/or ions. The attractive forces compete with the randomizing factor of kinetic energy. The structure that a particular substance exhibits depends on the... [Pg.158]

The final costs are highly dependent upon site-specific conditions. Contributing factors to the final cost include the waste characteristics, including its physical form and chemical makeup the amount of pretreatment required transportation of raw materials to the site and treated materials from the site and other random factors such as health and safety requirements and regulatory factors (D150141, p. 7.100). [Pg.447]

As we see in Chapter 2, the normal distribution comes about when a large number of purely random factors is responsible for the distribution. It is mainly applicable to particles... [Pg.635]

Because we are creatures with a certain kind of body and nervous system, a large number of human potentials are in principle available to use. but each of us is born into a particular culture that selects and develops a small number of these potentials, rejects others, and is ignorant of many. The small number of experiential potentials selected by our culture, plus some random factors, constitute the structural elements from which our ordinary state of consciousness is constructed, we are at once the beneficiaries and the victims of our culture s particular selection. The possibility of tapping and developing latent potentials, which lie outside the cultural norm, by entering an altered state of consciousness, by temporarily restructuring consciousness, is the basis of the great interest in such states. [Pg.11]

Mm, yes. Natasha s descendants, all the way through to Angel. I think she must have taken the random factor out of genetic inheritance. Or rather, she loaded the dice so much in favour of one sequence, they ll come up with the same results every time. ... [Pg.155]

Two-way analysis of variance End-point strength Fixed factors(s) Force, Punch Random factor(s) ... [Pg.162]

An exploratory analysis was performed using a four-factor ANOVA model, with treatment, period, and sequence as fixed factors and subject within sequence as random factor. The results from the ANOVA were used to calculate the back-transformed 90 % confidence intervals (Cl) for the differences between the fed and fasted condition in the log-transformed exposure measurements (Cmax, AUCo-t and AUCo-cc). For Cmax the difference between fasting and fed conditions was found to be statistically significant while this was not the case for the AUC parameters. [Pg.670]

The example presented above successfully illustrates hotv we develop and use the EVOP method for a discontinuous process. When we have a continuous process, it is suggested to transform it artificially into a discontinuous process. For this purpose, we must take into consideration all the factors of the process representing flow rates according to a fixed period of time. With these transformations we can control the effect of the random factors that influence the continuous process. If, for example, we consider the case of a continuous reactor, then, the conversion can be obtained from the analysis of 5 to 6 samples (each selected at a fixed period of time), when the corresponding input and output quantities are related to the... [Pg.413]

Besides, after identifying the effects, it is necessary to compare variances of the process produced by the variation of the factors and the variances of the process produced by the random factors [5.5, 5.8, 5.29-5.31]. [Pg.414]

When the investigated process shows a small residual variance we can consider that the variance results from the action of small random factors. At the same time, this small variance is a good indication of an excellent reproducibility of the experimental measurements. Conversely, a great residual variance can show that the measurements are characterized by poor reproducibility. However, this situation can also result from one or more unexpected or unconsidered factors this situation can be encountered when the interactions between the factors (parameters) have been neglected. In these cases, the variance of the interactions represents an important part of the overall residual variance. [Pg.421]

Despite these obvious objections, virtually all ElA using APase continue to be performed in PBS. The type of reaction kinetics changes then from zero-order to mixed (first- and zero-) order, in which (i) d[P]/df decreases much faster than in zero-order kinetics as can be shown by integration (Section 9.1.5) (ii) the lowered activity caused by the presence of Pj is due to random factors and depends on the amount of PBS remaining in the well and, (iii) the presence of Pi invalidates the error structure of the assay. Though the amounts of Pi remaining in the wells can be expected to follow... [Pg.197]

Precision is a measure of how variable a method is in its measurement of a product parameter under normal usage. In statistical terms, precision is measured by the variance of the method. Additionally, the typical sources of variability are accounted for in assessing precision these are random factors external to the method, such as analysts, days, and changing assay hardware ... [Pg.15]

The root nodes of each tree structure are connected, corresponding to each variable under consideration. In each single tree, the deterministic trend information and the random factors are all accounted for. The rationale behind using the multivariate tree structure is to be able to capture the correlations among variables. Here, the connection among variables is arbitrary, and the apparent parent-child connection does not really imply the parent-child dependence, but it is just a way to model the relation be-... [Pg.159]

Midlife or premature failures roughly constant failure rate due to random factors... [Pg.210]


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See also in sourсe #XX -- [ Pg.14 ]




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