Modifying the Symbol

In the previous section, we created the netlist for our subcircuit. Next, we have to create a graphic symbol to place in our schematic. We will continue with the previous example where we are displaying the project tree. Note that the subcircuit name is still selected  

If your circuit is not highlighted as in the screen capture above, click the LEFT mouse button on the text to select it. now create the symbol for this subcircuit. Select Tools and then Generate Part  

B w IlilWniWw a O PCfiM Hmmmmh O taaMaFlM Q MeMUbadM O 1a illu ftitln Q MMaaFlM 

In the NetllSt file field, enter the name of the netlist we created in the previous section. You can use the Browse button to select the file we created. I named my netlist file C Program Files OrcadLite Capture Library PSpice User subcircuits.lib. 

When you use the BfOWSe button, the Pelt library field is filled in automatically. A part library is also referred to as a symbol library and has an. olb extension. By default, Capture uses the same name you specified for the NetllSt file as for 

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The direct-solution method of Akers and Wade [1] is among several which attempt to reduce the amount of trial-and-error solutions. This has been accomplished and has proven quite versatile in application. The adaptation outlined modifies the symbols and rearranges some terms for convenient use by the designer [3]. Dew point and bubble point compositions and the plate temperatures can be determined directly. Constant molal overflow is assumed, and relative volatility is held constant over sections of the column. 

This is a way to express the energy in the variety a under the appearance of the variety b. The Formal CJraph in CJraph 12.3 depicts this situation by modifying the symbol of the translated effort node (dotted perimeter) in order to distinguish this relationship from the equivalence between the... 

It should be emphasized that is the actual, promoter modified, work function of the catalyst surface and not that of a clean metal surface for which we reserve the symbol o- It should also be clarified that the kinetic constant kR is also expected to vary with . Since, however, we have no rules on how it varies with we will attempt here to rationalize some classical promotional kinetics treating it as a constant. What is amazing is that this procedure works, which indicates that the promoter action effect on kD andkA, together with the 1-0P term, is dominant. 

Fig. 4 Predicted versus observed summer Anoxic Factor (AF) in (a, b) Foix Reservoir (Spain), (c, d) San Reservoir (Spain), (e, f) Brownlee Reservoir (USA), and (g, h) Pueblo Reservoir (USA). The results have been arranged to place the systems along a gradient of relative human impact (Foix Reservoir at the top, Pueblo Reservoir at the bottom). Predictions are based on linear models using different independent variables (in brackets) Inflow = streamflow entering the reservoir during the period DOCjjiflow = mean summer river DOC concentration measured upstream the reservoir CljjjAow = mean summer river CU concentration measured upstream the reservoir and Chlepi = mean summer chlorophyll-a concentration measured in the epilimnion of the reservoir. The symbol after a variable denotes a nonsignificant effect at the 95% level. Solid lines represent the perfect fit, and were added for reference. Modified from Marce et al. [48]...

Instead of its reciprocal value, denoted 7, is used sometimes (3, 124, 156) in eqs. (10) and (11) however, the symbol 7 can also stand for 1/(2.303 Rj3) (154, 155). For this reason, it will not be used in this paper. Alternatively, these equations can be modified by taking TAS as a variable, and the proportionality constant is then j3/T and is called the compensation factor (173). As an example of the graphical representation of the isokinetic relationship in the coordinates AH and AS, see Figure 1, ionization of meta- and para-substituted anilinium ions in water. This example is based on recent exact measurements (69, 71) and clearly shows deviations that exceed experimental error, but the overall linear correlation cannot be doubted. 

Due to its modularity, the software comes in many parts (shown in Fig. 9). The Chemkin package is composed of four important pieces the Interpreter, the Thermodynamic Data Base, the Linking File, and the Gas-Phase Subroutine Library. The Interpreter is a program that first reads the user s symbolic description of the reaction mechanism. It then extracts thermodynamic information for the species involved from the Thermodynamic Data Base. The user may add to or modify the information in the data base by input to the Interpreter. In addition to printed output, the Interpreter writes a Linking File, which contains all the pertinent information on the elements, species, and reactions in the mechanism. 

FIG. 5 Normalized concentration distribution in the pore of Figure 4 but charged with —0.05 C/m. The symbols are the same as in Figure 4, with the cations being the counterions. The anions (coions) of the RPM and SPM model are not distinguishable on the present scale. The dotted line is the prediction of the modified Gouy-Chapman theory and approximates the simulation results of the RPM. 

Alchemists [two books putting forward the transcendental theory] had considered the lives of the symbolists, as well as the nature of the symbols, their views would have been very much modified they would have found that the tiue method of Hermetic interpretation lies in a middle course but the errors which originated with merely typographical investigations were intensified by a consideration of the great alchemical theorem, which, par excellence, is one of universal development, which acknowledges... 

From work performed in 1983 by Burnier and Jorgensen [15], the following ab initio calculations for the HOMO and LUMO energies of the synthons were developed. The function n(x, parent) returns the number of atoms of type x in the parent. This function is abbreviated below as simply n(x) where the parent is understood. The symbols UU, O, N, S represent triple bonds, oxygen, nitrogen, and sulfer, respectively. The subscripts c and t denote central and terminal locations respectively in the parent for the elements which they modify. For brevity, the terms diene-synthon and dienophile-synthon will be replaced with diene and dienophile respectively. 

Exception 1 to Rule 9 When one or both of the numbers are negative or include a symbol that modifies the number, use the words to or through rather than the en dash. 

BCAH refer to as the modified effective friction tensor, which they denote by the symbol i p. (See p. 188 of Ref. 4 for a table of these and related definitions.)... 

The expression given by BCAH for elements of the constrained mobility within the internal subspace is based on inversion of the projection of the modified mobility within the internal subspace, rather than inversion of the projection (at of the mobility within the entire soft subspace. BCAH first define a tensor given by the projection of the modified friction tensor onto the internal subspace, which they denote by the symbol gat and refer to as a modified covariant metric tensor, which is equivalent to our CaT - They then define an inverse of this quantity within the subspace of internal coordinates, which they denote by g and refer to as a modified contravariant metric tensor, which is equivalent to our for afi = 1,..., / — 3. It is this last quantity that appears in their diffusion equation, given in Eq. (16.2-6) of Ref. 4, in place of our constrained mobility Within the space of internal coordinates, the two quantities are completely equivalent. 

Association-phenomena In order to find out the associations of all participating species in the catalytic process (better in all product-determining elementary steps of the cycles), caused by their properties [symbol f ( )] and concentrations (symbol f [ ]), we have applied and modified the Method of Inverse Titration to organo-metallic chemistry (Chap. 3) (for a review of titration procedures see Ref.. ... 

The title block contains information about you, your company, and the schematic. We will be using the title block to identify the student, class, and university where the schematic was created. There are four ways we can modify the title block. The first way shows how to change the title block for the current schematic. This method must be repeated each time you create a new schematic. The second way shows you how to tell Capture information about yourself that is used in every schematic you create. This could be information such as your name, company, address, and phone number. The third method shows how to select a different title block from a list of available title blocks already created. The fourth method is to create a new title block and save it in a symbol library. 

The last thing we need to do for our new part is modify the graphic symbol. Double-click the Left mouse button on the text MEH OpAmp to edit the symbol ... 

Next, we need to modify the graphic symbol. You can move the pins, but do not change them or rename them. You can hide the pin names (Vp, Vm, or Vo) if you wish, but you cannot change their names because they correspond to the calling nodes used in the subcircuit netlist. You can delete the box and then add any graphics you wish using the place menu. My modified symbol is shown below ... 

The three parameters to be modified are displayed in the first column of the table below. Complete the different cases by indicating, using the symbols provided, the observations anticipated + symbolises an increase, 0 shows a weak variation in either direction and — for a decrease. 

P = 98 92(6)°. The center of inversion is indicated by a dot in the center of the unit cell, and the two two-fold screw axes are perpendicular to the plane of the paper and are marked with the symbol i Two glide planes perpendicular to the screw axes in the. xy plane (parallel with the plane of the paper) are not indicated but are found at distances of one-fourth and three-fourths unit cell depth. Note that a, b, and c do not correspond exactly to x, y, and a because one of the three angles of a monoclinic structure is unequal to 90°. The fluorine atoms have been omitted for clarity. [Modified from Hadj-Baghcri, N. Strickland, D. S., Wilson, S. R. Shapley, J. R. J. Organomet. Chem. 1991,410, 231-239 Courtesy of S. R. Wilson and C. L. Stern.]... 

Chirality symbols based on the priority sequence. The procedure is applied as for tetrahedra, but modified because there is a unique principal axis. The structure is oriented so that the viewer looks down the principal axis, with the ligand having the higher priority closer to the viewer. Using this orientation, the priority sequence of ligating atoms in the [horizontal] plane is examined. If the sequence proceeds in a clockwise fashion, the chirality symbol C is assigned. Conversely, if the sequence is anticlockwise, the symbol A is assigned. 

When a name applies equally to two or more isomeric condensed parent ring systems with the maximum number of non-cumulative double bonds and when the name can be made specific by indicating the position of one or more hydrogen atoms in the structure, this is accomplished by modifying the name with a locant, followed by italic capital H for each of these hydrogen atoms. Such symbols ordinarily precede the name. The said atom or atoms are called indicated hydrogen . The same principle is applied to radicals and compounds derived from these systems. 

Appendix IB). The symbols may be modified by attaching subscripts, as set out in Table 2. Fundamental constants are not included in the lists but can be found inside the back cover of the text. 

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