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First Formulations

Now we can predict a valid and operating formula for glitter, then compare the formula with one or two formulas used in the past, pick up some further data on more chemicals and examine the formulas published to date. At that point, the theoretical limits of glitter can be approached. [Pg.26]

Simple things first. Empirically, most glitter formulas contain between five and fifteen percent metal fuels so we assume ten percent and calculate the percentages of materials needed to create a mix that will yield Equation Two residues. [Pg.26]

The formula does produce glitter and it produces better glitter than the same aluminum and meal powder or hand mixed 15, 2, 3 naturally it is advisable to increase the charcoal to compensate for the fact that the formula assumes the charcoal to be pure carbon. This base fire is the same as was found for Sienko Hanabi, so Equation Two becomes the first consideration in the chemistry of this simple glitter mix. [Pg.26]

The brackets are used to indicate that a chemical is present but not reacting. In the next set of brackets a small letter 1 will appear to indicate that the aluminum is in the liquid state. The spritzel is formed of the above and continues to burn in air. The equation used to simply state the first and simplest type of delay reaction can be written as  [Pg.26]

In the experimental section later in the paper are simple experiments that prove the mixture of potassium sulfate and aluminum is capable of explosive burning if some potassium sulfide is present. Aluminum can exothermically and explosively reduce all sulfates to sulfides but in the case of potassium sulfate it is usually a slow reaction similar to the flitter effect and is indeed typically taking place in most flitter stars whose formulas have the three formula ingredients of black powder type mixtures and aluminum. The presence of potassium sulfide causes a change in reaction types and reaction speed. Please see the test tube experiments. [Pg.26]


Linearized Reference System We first formulate the following linearized Langevin system at some reference point (e.g., X", AT" + V") ... [Pg.247]

Since the first formulation of the MO-LCAO finite basis approach to molecular Ilartree-Pock calculations, computer applications of the method have conventionally been implemented as a two-step process. In the first of these steps a (large) number of integrals — mostly two-electron integrals — arc calculated and stored on external storage. Th e second step then con sists of the iterative solution of the Roothaan equations, where the integrals from the first step arc read once for every iteration. [Pg.265]

The catalysts for these compounds are based on aluminum (Nippon Zeon) or tin (Daiso) (12,13). The preferred catalysts are triaLkylalurninum—water combinations used with or without a chelating agent such as acetylacetone. Except for minor variations, few changes in catalyst composition have been made since it was first formulated. [Pg.553]

Cropley made general recommendations to develop kinetic models for compUcated rate expressions. His approach includes first formulating a hyperbolic non-linear model in dimensionless form by linear statistical methods. This way, essential terms are identified and others are rejected, to reduce the number of unknown parameters. Only toward the end when model is reduced to the essential parts is non-linear estimation of parameters involved. His ten steps are summarized below. Their basis is a set of rate data measured in a recycle reactor using a sixteen experiment fractional factorial experimental design at two levels in five variables, with additional three repeated centerpoints. To these are added two outlier... [Pg.140]

Against this background of the changed economics of plant performance, we consider some of the many new gas turbine plants that have been proposed over the past few years. In this section, we first formulate a list and classify these plants (and the cycles on which they are based), as in Tables 8.1A-D, noting that most but not all use natural gas as a fuel. [Pg.132]

The basis of the ciystal chemical classification of tantalum and niobium fluoride compounds was first formulated by Kuznetzov and Rogachov [232]. The main tenets of the classification are as follows ... [Pg.116]

NOTE The first formulation operates under a control limit of20x COC. The second formulation offers the benefit of additional on-line chelating and cleaning power through use ofSTPP. A limit of 10 to 12x COC would typically apply. [Pg.430]

One important stracture in molecules are polar bonds and, as a result, polar molecules. The polarity of molecules had been first formulated by the Dutch physicist Peter Debye (1884-1966) in 1912, as he tried to build a microphysical model to explain dielectricity (the behaviour of an electric field in a substance). Later, he related the polarity of molecules to the interaction between molecules and ions. Together with Erich Hiickel he succeeded in formulating a complete theory about the behaviour of electrolytes (Hofimann, 2006). The discovery of the dipole moment caused high efforts in the research on physical chemistry. On the one hand, methods for determining the dipole momerrt were developed. On the other hand, the correlation between the shape of the molectrle and its dipole moment was investigated (Estermanrr, 1929 Errera Sherrill, 1929). [Pg.233]

The main part of the paper consists in first formulating a DIFF for a data set of body component isotopic compositions when fed on known diets, next developing a flow-model appropriate to this data set whose behaviour can then be compared with the DIFF Many of the issues raised in this process help to provide an understanding for the wider questions posed in the introduction. [Pg.213]

A quick qualitative indication of how a system at equilibrium responds to a change in conditions can be obtained using Le Chatelier s principle, which was first formulated in 1884 by Henri-Louis Le Chatelier, a French industrial chemist. [Pg.1156]

The equilibrium conditions for homogeneous systems with membranes were first formulated in this form by Frederick G. Donnan in 1911. Hence, such equilibria are often called Donnan equilibria, and the membrane potentials associated with them are called Donnan potentials. Sometimes these terms are used as well for the equilibria arising at junctions between dissimilar solutions (Section 5.3). [Pg.76]

It is worth noting the distinction between the Hill equation and the logistic equation, which was first formulated in the 19th century as a means of describing the time-course of population increase. It is defined by the expression ... [Pg.17]

The Principle of Microscopic Reversibility. The principle of microscopic reversibility is based on statistical mechanical arguments and was first formulated by Tolman (17) in 1924. [Pg.88]

About 10 years after the first formulation of DR and 5 years after its theoretical j ustifica-tion by Charney, some contradictory results emerged which make its validity questionable. [Pg.120]

The laws of classical dynamics were first formulated by Newton. The first law states that any particle will persist in its state of uniform unaccelerated motion unless it is acted upon by a force. Using the notation xiy y, z, for the cartesian coordinates of the ith point particle, of mass mi Newton s equations for n point particles are... [Pg.99]

In addition to orthogonality the eigenfunctions also have the important property of completeness, first formulated by Fourier. This property implies that any arbitrary function f(x) that satisfies the same boundary conditions as the functions of the set, can be expressed as a Fourier series... [Pg.114]

The purpose of this chapter is to introduce the effect of surfaces and interfaces on the thermodynamics of materials. While interface is a general term used for solid-solid, solid-liquid, liquid-liquid, solid-gas and liquid-gas boundaries, surface is the term normally used for the two latter types of phase boundary. The thermodynamic theory of interfaces between isotropic phases were first formulated by Gibbs [1], The treatment of such systems is based on the definition of an isotropic surface tension, cr, which is an excess surface stress per unit surface area. The Gibbs surface model for fluid surfaces is presented in Section 6.1 along with the derivation of the equilibrium conditions for curved interfaces, the Laplace equation. [Pg.158]

The most common form of blast scaling is Hopkinson-Cranz or "cube-root" scaling. This law, first formulated by B. Hopkinson (Reference 8) and independently by C. Cranz (Reference 9), states that self-similar blast waves are produced at identical scaled distances when two explosive charges of similar geometry and of the same explosive, but of different sizes, are detonated in the same atmosphere. It is customary to use as a scaled distance a dimensional parameter,... [Pg.6]

We will answer this question in terms Faraday s first law, which was first formulated in 1834 (see Table 7.1). [Pg.285]

This example focuses on the design and optimization of a steady-state staged column. Figure El 2.1 shows a typical column and some of the notation we will use, and Table El2.1 A lists the other variables and parameters. Feed is denoted by superscript F. Withdrawals take the subscripts of the withdrawal stage. Superscripts V for vapor and L for liquid are used as needed to distinguish between phases. If we number the stages from tihe bottom of the column (the reboiler) upward with k= 1, then V0 = L1 = 0, and at the top of the column, or the condenser, Vn = Ln+l = 0. We first formulate the equality constraints, then the inequality constraints, and lastly the objective function. [Pg.444]

The first formulation is more directly suited to the case of reactants in solution and the second to attached reactants. In the first case, the rate constants have the dimensions length time typically cm s, whereas in the second case, they have the dimensions of time-1, typically s When these rate constants are very large, equilibrium is achieved, corresponding to Nernst s law ... [Pg.29]


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