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Function, derivatives

VV e now wish to establish the general functional form of possible wavefunctions for the two electrons in this pseudo helium atom. We will do so by considering first the spatial part of the u a efunction. We will show how to derive functional forms for the wavefunction in which the i change of electrons is independent of the electron labels and does not affect the electron density. The simplest approach is to assume that each wavefunction for the helium atom is the product of the individual one-electron solutions. As we have just seen, this implies that the total energy is equal to the sum of the one-electron orbital energies, which is not correct as ii ignores electron-electron repulsion. Nevertheless, it is a useful illustrative model. The wavefunction of the lowest energy state then has each of the two electrons in a Is orbital ... [Pg.57]

Thiophene [110-02-1] and a number of its derivatives are significant in fine chemical industries as intermediates to many products for pharmaceutical, agrochemical, dyestuffs, and electronic appHcations. This article concentrates on the industrial, commercial, and economic aspects of the production and apphcations of thiophene and thiophene derivatives and details the main synthetic schemes to the parent ring system and simple alkyl and aryl derivatives. Functionalization of the ring and the synthesis of some functional derivatives that result, not from the parent ring system, but by direct ring cyclization reactions are also considered. Many good reviews on the chemistry of thiophene and thiophene derivatives are available (1 7). [Pg.17]

Along with, and closely connected to, the developments in precise impact techniques is the development of methods to carry out time-resolved materials response measurements of stress or particle velocity wave profiles. With time resolutions approaching 1 ns, these devices have enabled study of mechanical responses not possible in the early period of the 1960s. The improved time-resolutions have resulted from direct measurement of stress or particle velocity, rather than from improved accuracy and resolution in measurement of position and time. In a continuation of this trend, capabilities are being developed to provide direct measurements of the rate-of-change of stress. With the ability to measure such a derivative function, detailed study of new phenomena and improved resolution and accuracy in descriptions of known rate-dependent phenomena seem possible. [Pg.62]

For mechanical wave measurements, notice should be taken of the advances in technology. It is particularly notable that the major advances in materials description have not resulted so much from improved resolution in measurement of displacement and/or time, but in direct measurements of the derivative functions of acceleration, stress rate, and density rate as called for in the theory of structured wave propagation. Future developments, such as can be anticipated with piezoelectric polymers, in which direct measurements are made of rate-of-change of stress or particle velocity should lead to the observation of recognized mechanical effects in more detail, and perhaps the identification of new mechanical phenomena. [Pg.67]

Signal-flow graphs are particularly useful in two respects. First, they make the process designer examine in considerable detail the dynamic structure and fimctioning of the process. Second, the nature of the interface between person and machine can be seen more clearly. The variables that are displayed in a system are, of course, available for study, but workers frequently respond to derivative functions of variables or "hidden" variables that must be deduced. Given that the process variables to be displayed will influence the worker s control strategy and that the number of deductions to be made will affect the mental workload involved, a process designer can select the type and amoimt of process information which will enhance performance of the task. [Pg.177]

Another commercially available imidazole scaffold upon which a number of other functionalized cations have been constructed is l-(3-aminopropyl)imidazole. The appended amino group in this material is a versatile reactive site that lends itself to conversion into a variety of derivative functionalities (Scheme 2.3-2). [Pg.36]

J. C. Dore, M. A. M. Sufi, and M. Bellissent-Funel, Structural change in D2O water as a function of temperature the isochoric temperature derivative function for neutron diffraction. Phys. Chem. Chem. Phys. 2, 1599-1602 (2000). [Pg.287]

Note that since there are two independent variables of both length and time, the defining equation is written in terms of the partial differentials, 3C/dt and 3C/dZ, whereas at steady state only one independent variable, length, is involved and the ordinary derivative function is used. In reality the above diffusion equation results from a combination of an unsteady-state mass balance, based on a small differential element of solid length dZ, combined with Pick s Law of diffusion. [Pg.225]

F. H. Westheimer (1987) has provided a detailed survey of the multifarious ways in which phosphorus derivatives function in living systems (Table 4.7). The particular importance of phosphorus becomes clear when we remember that the daily turnover of adenosine triphosphate (ATP) in the metabolic processes of each human being amounts to several kilograms Phosphate residues bond two nucleotides or deoxynucleotides in the form of a diester, thus making possible the formation of RNA and DNA the phosphate always contains an ionic moiety, the negative charge of which stabilizes the diester towards hydrolysis and prevents transfer of these molecules across the lipid membrane. [Pg.115]

Another limitation is perhaps not so much a limitation as, perhaps, a strange characteristic, albeit one that can catch the unwary. To demonstrate, we consider the simplest S-G derivative function, that for the first derivative using a 5-point quadratic fitting function. The convolution coefficients (after including the normalization factor) are... [Pg.364]

Suppose we compute a second derivative by applying this first derivative function twice The effect is easily shown to be equivalent to applying the convolution coefficients ... [Pg.364]

The derived function for the correlation function including the host-guest dynamics (Gr(t)) is given by... [Pg.180]

U.S. 6,353,072 Polymer preparation from boron derivative functional group-containing monomers... [Pg.647]

Heat and mass balance equations are used in all aspects of process modelling however, what is key to this model is an understanding of the electrolytic process behind the cell. For example, the model must be able to predict current efficiency and k-factor if it is to predict electricity consumption. Most of these electrolytic parameters are calculated using empirical relationships derived from experimental data both from test cells and the full-scale plant. Considering k-factor, this is primarily a function of brine strength and temperature. Figure 20.5 illustrates the experimentally derived function used in the model. [Pg.263]

The numerator of Eq. (4) is the integral of the derived function t x f(t), usually called the area under the moment curve (AUMC) (7,8). The denominator is the AUC according to Eq. (2). As visualized by the top plot of Figure 2, the mean as center of gravity represents the time value where the profile (when cut from cardboard) would be in perfect balance. [Pg.257]

Model-dependent comparison of two time profiles is best achieved in terms of the semi-invariants discussed earlier in the section on Characterization of Semi-invariants ( Moments ). This treatment is in accordance with the Level B definition of IVIVC, as proposed in several official guidelines. It makes full use of the underlying model that the data are presented by a distribution function, but no specific function is required. Although derived function parameters (e.g., Weibull, polyexponential, etc.) may be used, the computation may also be performed numerically on the observations as such. [Pg.262]

New monosubstituted cobaltocenium derivatives functionalized with hydrogen-bonding amine groups (Fig. 39) have been prepared and the... [Pg.53]

Barbaralane 548 (tricyclo[3.3.1.04,6]nona-2,7-diene) was first described in 1967 (see Reference 80 and literature cited therein). Barbaralane and its derivatives functionalized in the C(9) position (550a,b) are degenerate Cope systems whose equilibrium can be frozen... [Pg.846]

Euler integration is extremely simple to program, as will be illustrated in Example 4,3. This simplicity is retained, even as the number of ODEs increases and as the derivative functions become more complex and nonlinear. [Pg.107]

The explicit first-order Euler algorithm is used. The variables that we are solving for as functions of time are V and H. The right-hand sides of Eqs. (5.3) and (5.4) are the derivative functions. These are called VDOT and HDOT in the program. At the nth step in time... [Pg.118]

Equation (9.30) is an analoge of Equation (2.32) for the first derivative function, and it defines the degree of homogeneity of the partial derivative function/ and states that its degree of homogeneity is 1, that is, one less than the degree of homogeneity n... [Pg.217]

Because of this relationship between (TT — and p-j x.. the former quantity frequently is referred to as the Joule-Thomson enthalpy. The pressure coefficient of this Joule-Thomson enthalpy change can be calculated from the known values of the Joule-Thomson coefficient and the heat capacity of the gas. Similarly, as (H — is a derived function of the fugacity, knowledge of the temperature dependence of the latter can be used to calculate the Joule-Thomson coefficient. As the fugacity and the Joule-Thomson coefficient are both measures of the deviation of a gas from ideahty, it is not surprising that they are related. [Pg.239]

POE 6000 was used as polymeric support, a soluble polyethylene glycol derivative functionalized at both termini with an amino group and with an average molecular mass of 6000 Da [62-63]. After completion of the homogeneous reactions it can be precipitated, filtered off, and washed with diethyl ether, thereby facilitating the separation of surplus reagents and the side products. Furthermore it allows for NMR spectroscopic monitoring of the reactions [64]. [Pg.464]

Many phosphorus derivatives function as irreversible inhibitors of acetylcholinesterase, and are thus potentially toxic. These include a range of organophosphorus insecticides, such as malathion and parathion, and nerve gases such as sarin. [Pg.280]

Many examples are available of the elimination of a halogen atom together with a hydroxyl-derived function. Electrochemical reduction of tetra-O-acetyl-a-gluco-... [Pg.119]

The most powerful classes, for several reasons, comprise carboxylic acid and carbonate-derived functions containing both nitrogen and oxygen secondary and tertiary amides, ... [Pg.502]

Since the Laplacian is a second-derivative function, it is very sensitive to small changes in the density. Quantitative results are basis-set dependent, and... [Pg.138]


See other pages where Function, derivatives is mentioned: [Pg.64]    [Pg.17]    [Pg.521]    [Pg.441]    [Pg.199]    [Pg.215]    [Pg.8]    [Pg.106]    [Pg.107]    [Pg.19]    [Pg.19]    [Pg.113]    [Pg.289]    [Pg.33]    [Pg.988]    [Pg.1]    [Pg.265]    [Pg.66]    [Pg.43]    [Pg.624]    [Pg.123]   
See also in sourсe #XX -- [ Pg.91 ]




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Alkyl derivatives with functional groups

Amines and Their Derivatives Functional Groups Containing Nitrogen

Antithesis Orbital Functional Derivatives Define Linear Operators

Atomic orbital basis function derivatives

Azo Derivatives Possessing a Phenol Function

Basis functions Coulomb potential derivatives

Basis functions first-order derivatives

Basis functions second-order derivatives

Boltzmann statistics and the canonical partition function a derivation

CD derivatives with embedded functional groups

Calculating Derivatives of General Functions

Carbonic acid functional derivations

Carboxylic acid derivatives, functional groups

Carboxylic acid derivatives, functional groups among

Carboxylic acids, functional derivatives

Carboxylic acids, functional derivatives Acid anhydrides, Amides, carbonic

Carboxylic acids, functional derivatives characteristic reactions

Carboxylic acids, functional derivatives compounds

Carboxylic acids, functional derivatives nomenclature

Carboxylic acids, functional derivatives reaction with alcohols

Carboxylic acids, functional derivatives reaction with water

Carboxylic acids, functional derivatives reactions with organometallic

Carboxylic acids, functional derivatives reduction

Carboxylic acids, functional derivatives structure

Carboxylic acids, functional derivatives sulfonamides

Chain rule, functional derivatives

Cinchona Alkaloid Derivatives with a Sulfonamide, Urea, Thiourea, Squaramide, or Guanidine Function

Copper Grignard-derived functionalized

Coupled-cluster wave functions, derivatives

Coupled-cluster wave functions, derivatives electronic energy

Coupled-cluster wave functions, derivatives energy

Cyanates functional derivatives

Density functional derivative

Density functional derivative Frechet, local potential

Density functional derivatives definitions

Density functional derivatives notations

Density functional theory derivatives

Derivation of P(E) Functions

Derivation of the Nonnalized Transfer Function

Derivation of the Transfer Function

Derivative Continuity of the Basis Function at its Ends

Derivative of an Analytic Function

Derivative, energy function

Derivatives algebraic functions

Derivatives continuous functions

Derivatives fractal function

Derivatives of arsabenzene possessing a functional group

Derivatives of common functions

Derivatives of function

Derivatives of the Molecular Mechanics Energy Function

Derivatives response function approach

Derivatives response functions

Derivatives trigonometric functions

Derivatives vector functions

Derivatives wave functions

Derived thermodynamic functions

Diazonium salts functional derivatives

Direct Functional Derivative

Displacement functions, time derivatives

Distribution functions derivation

Dynamic methods function derivation

Energy derivatives interaction wave functions

Enthalpy derivation from partition functions

Entropy derivation from partition functions

Error function and its derivative

Error function, definition derivatives

FUNCTIONAL COMPOUNDS CONTAINING OXYGEN, SULPHUR OR NITROGEN AND THEIR DERIVATIVES

Fatty acid derivatives, functionalization

Fractional derivative technique functional derivatives

Frechet functional derivative

Fullerene derivatives functionalization

Function Equal to Its Derivative

Function and derivative

Function derived

Function derived

Function second derivative

Functional Group Derivatives

Functional derivative definition

Functional derivative discontinuity

Functional derivative, orbital

Functional derivatives

Functional derivatives acid anhydrides

Functional derivatives acid chlorides

Functional derivatives amides

Functional derivatives analysis

Functional derivatives and local potentials

Functional derivatives carbonyl group

Functional derivatives esters

Functional derivatives hydrolysis

Functional derivatives nomenclature

Functional derivatives nucleophilic substitution

Functional derivatives of

Functional derivatives of carbonic acid

Functional derivatives physical properties

Functional derivatives spectroscopic analysis

Functional derivatives structure

Functional derivatives, interconversions

Functional derivatives, of carboxylic acids

Functional estimation problem algorithm derivation

Functionalization indole derivatives

Functionalized Organoborane Derivatives in Organic Synthesis

Functionalized Organotitanium Derivatives

Functionally Substituted Alkyl Derivatives

Functionals and functional derivatives

Functionals and their derivatives

Furan derivatives functionalized

Furan derivatives highly functionalized

Gateaux functional derivative

Head groups functional derivatives

Heat capacity derivation from partition functions

Hydrocarbon derivatives functional groups

Indicator function derivatives

Indicator function time derivative

Interconversion of functional derivatives

Inverse functional derivative

Isocyanates functional derivatives

Isothiocyanates functional derivatives

Lignin derivatives with acrylate functionality

Lipids functional derivatives

Lipoproteins functional derivatives

Liposomes functional derivatives

Molecular function derivation

Molecular function objective functional derivative

Molecules property derivation from partition functions

Multivariate function derivatives

Nitrile oxides functional derivatives

Nitriles functional derivatives

Non-planar sulfur- or phosphorus-derived acidic functions

Norbornene functional derivatives

Olefins and Functional Derivatives in the Presence of Alcohols

Olefins and Functional Derivatives in the Presence of Carboxylic Acids, Thiols, Amines or Hydrogen Chloride

Olefins and Functional Derivatives in the Presence of Water

Partial derivative of function

Partition functions molecular properties derivation

Phosphatidic acid functional derivatives

Platelet-derived growth factor functions

Porphyrin derivatives, functional

Porphyrin derivatives, functional molecular receptors

Preparation of Functionalized Alkenylzirconocene Derivatives

Pressure and Temperature Derivatives of the Functions

Response function time-derivative

Response functions derivation

Ring system derivatives, 2-functionalized

Selected Ferrocene Derivatives with Reactive Functional Substituents

Spectral function derivation

Spectral function general derivation

Statistical derivation of the NVT partition function

Synthesis and Reactions of Functionalized Alkyl Boron Derivates

THERMODYNAMIC FUNCTIONS DERIVED FROM ACTIVITY

The Functional Derivative

Thesis are Density Functional Derivatives Really Local Functions

Thiocyanate-derived functionally

Thiocyanates functional derivatives

Thomas-Fermi kinetic functional derivation

Time-dependent density functional theory derivation

Unsubstituted Diorganotin Dicarboxylates Derived from Functionally Substituted Polycarboxylic Acids

Wave function Coulomb potential derivatives

Wave function derivation

Wave function first-order derivatives

Wave function second-order derivatives

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