Big Chemical Encyclopedia

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

Articles Figures Tables About

Formula inputs

Working with formula output and finding formula input... [Pg.127]

Depending on which distance formula you re using, the input is quite different. One distance formula inputs the rate and time. The second distance formula inputs coordinates of points. And the third formula inputs just time. In all three cases, the output is a distance measure. [Pg.137]

Using the Product Models to Describe the Surface and to Optimize Attributes. The product models represent a short-hand description of the relation between formula variables and consumer attribute ratings. As such, the researcher can use the model instead of the raw data, to estimate the likely attribute rating for any combination of formula inputs. This means that the researcher can systematically explore the different combinations of formula ingredients, and either find the optimum level (e.g., for an attribute such as purchase), or estimate the likely attribute ratings for any formulation. [Pg.58]

It allows the researcher to place constraints on the model, and optimize the product, subject to constraints. These constraints can represent limitations on the formula inputs, or limitations on the sensory responses, or both. [Pg.64]

G ] = 1 o 11 9-7) [G], The calculation of ionic species of glycine (pKj = 2.4 and p/C, = 9.7) at different pH values using Excel is illustrated with formula input and calculated values output. [Pg.22]

Th chemical formula input box displays the superscripts and subscripts as you enter the Formula. There are 3 ways to use the input box. [Pg.630]

Use the Chemical Formula Input Tool to help correctly format your answers with subscripts and superscripts. ... [Pg.631]

Graphical Structural Formula Input Formula Conversion (to CANOST Notation)... [Pg.19]

In this section, two illustrative numerical results, obtained by means of the described reconstruction algorithm, are presented. Input data are calculated in the frequency range of 26 to 38 GHz using matrix formulas [8], describing the reflection of a normally incident plane wave from the multilayered half-space. [Pg.130]

Identification of the material properties as an estimation of transfer function (TF) for the black box model. In this case the problem of identification is solving according to the results of the input (IN) and output (OUT) actions. There is a transfer of notion of mathematical description of TF on characterization of the material. This logical substitution gives us an opportunity to formalize testing procedure and describe the material as a set of formulae, which can be used for quantitative and qualitative characterization of the materials. [Pg.188]

Another example of deahng with molecular structure input/output can be found in the early 1980s in Boehiinger Ingelheim. Their CBF (Chemical and Biology Facts) system [44] contained a special microprocessormolecular structures. Moreover, their IBM-type printer chain unit had been equipped with special chemical characters and it was able to print chemical formulas. [Pg.44]

As already mentioned (Section 5.3), the stored structure information in this type of database makes it possible to search for chemical structures in several ways. One method is to draw a structure (via a molecule editor) and to perform either a precise structure search (full structure search) or a search containing part of the input structure (substructure search) (see Sections 6.2-6.4). The databases also allow the searching of chemical names and molecular formulas (see Section 6.1). The search results are in most cases displayed in a graphical manner. [Pg.262]

SMILES (simplified molecular-input line-entry specification) a way of specifying a molecular formula and connectivity, but not the three-dimensional geometry... [Pg.368]

An important approach to the graphic representation of molecules is the use of a connection table. A connection table is a data base that stores the available bond types and hybridizations for individual atoms. Using the chemical formula and the connection table, molecular stmctures may be generated through interactive graphics in a menu-driven environment (31—33) or by using a linear input of code words (34,35). The connection table approach may be carried to the next step, computer-aided molecular design (CAMD) (36). [Pg.63]

The power input from a liquid stream injected with a hydraulic spray nozzle may usually be taken as approximately equal to the product of the nozzle feed pressure pf and the volumetric hquid rate. The liquid-phase contacting power Pe may then be calculated from the following formulas ... [Pg.1592]

The ACF is the actual cubic feet of gas measured at t, F and P, psig. SCF represents standard conditions at 70 F and 14.6 psia. The formulas provided require input information on the pressure and temperature of the fuel gas, the fuel gas analysis by volume (or mole percent if the pressures are sufficiently low), and the percent excess air. The calculation provides the air to fuel ratio required for complete combustion. [Pg.519]

The amount of heat absorbed by a vessel exposed to an open fire is markedly affected by the size and character of the installation and by the environment. These conditions are evaluated by the following equivalent formulas, in which the effect of size on the heat input is shown by the exponent of A, the vessel wetted area, and the effect of other conditions, including v essei external insulation is included in a factor F [33] ... [Pg.451]

The heat transfer to the liquid from an engulfment fire has been estimated at around lOOkW/m, and the above formula equates this to the vapor produced from this input as latent heat. The exponential is an area exposure factor, which recognizes that large vessels are less likely to be completely exposed to flames. [Pg.305]

The authors of [40] used L. L. Blyler s and T. K. Kwei s formula to process experimental data [41, 8] and obtained good correlation between theory and experiment. In all the processed experiments viscosity was established in accordance with pressure at channel input. To describe data presented by C. J. Ma and C. D. Han [2-5], who1 studied freon-containing polymer melts, the same paper supposed that the entire volume of gas is expended in part on the increase of the free volume of the composition, and that the occupied volume also changes in its presence. This consideration made it possible for the authors of [40] to attain fair correlation between theory and practice. This makes, in our opinion, the ideas expressed in [39, 40] worthy of the most serious attention, however critical the following evaluation of these works may appear to the reader. [Pg.109]

As a simple illustration of this philosophy, we analyze one aspect of the following data-smoothing device. The input to this device is a time function X(t) and the output Y(t) is given by the formula... [Pg.100]

Figure 1 shows a flow chart for part of a recursive modelling procedure, illustrated in this paper, which accepts as input a formula consisting of constituent raw material codes or formula names, and quantities. The procedure retrieves property data for each raw material in order to perform the required calculations. When the procedure encounters a constituent that is a formulated product, it calls itself using that product as input. The output of the procedure consists of the calculated properties of the formula, including those properties of the formula that would be retrieved from data files for non-formulated or purchased raw materials. By returning this latter set of properties, the procedure can treat formulas as raw materials. [Pg.55]

Recursion is not necessary in a formula modelling system if the only material inputs have the necessary characteristics available in a raw material database. The flow chart in Figure 2 shows how the retrieval process occurs in this case. Compare this with the flow chart in Figure 1. [Pg.55]

Figure 1 Flow chart of recursive procedure, accepting both raw material and formulas as inputs. Figure 1 Flow chart of recursive procedure, accepting both raw material and formulas as inputs.
The procedure illustrated here, besides containing only trivial technical calculations, lacks important features that are required in production programs. Extensive error checking and recovery must be performed. The procedure must detect the occurrence of a self-referential system of formulas, which would result in attempting endless recursive calls. Access to multiple raw material and formula databases adds power to the program, but must be implemented by complex code to allow flexible control of that access. The structural and input/output statements to support these features may greatly exceed the number of statements that perform modelling calculations. [Pg.60]

In case when the major input into the change of concentration of free carriers is provided by double-ionized oxygen vacancies which is valid at high temperatures the concentration of conductivity electrons is [e] w 2[Vq ], which, recalling expressions (1.121), (1.124) and (1.125) brings us to formula... [Pg.84]

For each selected PFC, a profile was edited including the name of the compound, its CAS (Chemical Abstracts Service) number and the SMILES (Simplified Molecular Input Line Entry System) formula. [Pg.183]


See other pages where Formula inputs is mentioned: [Pg.630]    [Pg.631]    [Pg.630]    [Pg.631]    [Pg.73]    [Pg.141]    [Pg.250]    [Pg.480]    [Pg.395]    [Pg.458]    [Pg.505]    [Pg.189]    [Pg.300]    [Pg.482]    [Pg.703]    [Pg.482]    [Pg.679]    [Pg.177]    [Pg.74]    [Pg.27]    [Pg.49]    [Pg.658]    [Pg.152]    [Pg.369]    [Pg.241]   
See also in sourсe #XX -- [ Pg.132 , Pg.133 , Pg.134 , Pg.135 ]




SEARCH



© 2024 chempedia.info