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Time-dependent analysis

Time Dependent - runs a time dependent analysis of system or sequence. [Pg.139]

Figure 2.4. In vivo measurement of blood-brain barrier (BBB) permeability, (a) Internal carotid artery perfusion technique (i) in the rat. Other branches of the carotid artery are ligated or electrically coagulated (o, occipital artery p, pterygopalatine artery). The external carotid artery (e) is cannulated and the common carotid artery (c) ligated. Perfusion time may range from 15 s to 10 min, depending on the test substance. It is necessary to subtract the intravascular volume, Vo, from (apparent volume of distribution), to obtain true uptake values and this may be achieved by inclusion of a vascular marker in the perfusate, for example labelled albumin. Time-dependent analysis of results in estimates of the unidirectional brain influx constant Ki (pi min which is equivalent within certain constraints to the PS product. BBB permeability surface area product PS can be calculated from the increase in the apparent volume of distribution Vd over time. Capillary depletion, i.e. separation of the vascular elements from the homogenate by density centrifugation, can discriminate capillary uptake from transcytosis. (b) i.v. bolus kinetics. The PS product is calculated from the brain concentration at the sampling time, T, and the area under the plasma concentration-time curve, AUC. Figure 2.4. In vivo measurement of blood-brain barrier (BBB) permeability, (a) Internal carotid artery perfusion technique (i) in the rat. Other branches of the carotid artery are ligated or electrically coagulated (o, occipital artery p, pterygopalatine artery). The external carotid artery (e) is cannulated and the common carotid artery (c) ligated. Perfusion time may range from 15 s to 10 min, depending on the test substance. It is necessary to subtract the intravascular volume, Vo, from (apparent volume of distribution), to obtain true uptake values and this may be achieved by inclusion of a vascular marker in the perfusate, for example labelled albumin. Time-dependent analysis of results in estimates of the unidirectional brain influx constant Ki (pi min which is equivalent within certain constraints to the PS product. BBB permeability surface area product PS can be calculated from the increase in the apparent volume of distribution Vd over time. Capillary depletion, i.e. separation of the vascular elements from the homogenate by density centrifugation, can discriminate capillary uptake from transcytosis. (b) i.v. bolus kinetics. The PS product is calculated from the brain concentration at the sampling time, T, and the area under the plasma concentration-time curve, AUC.
Johnson, B.R. and Kinsey, J.L. (1987). Time-dependent analysis of the Hartley absorption band and resonance Raman spectra in ozone, J. Chem. Phys. 87, 1525-1537. [Pg.394]

Yanders AF, Orazio CE, Puri RK, et al. 1989. On translocation of 2,3,7,8-tetrachlorodibenzo-p-dioxin Time dependent analysis at the Times Beach experimental site. Chemosphere 19 429-432. [Pg.708]

In our case, to include non-adiabatic effects, e.g., charge exchange, we require a time-dependent analysis of the binary collision. [Pg.102]

TABLE 29.6. Multisite Time-Dependent Analysis of Tumor Incidence in the NTP(1993) Study of Mice Exposed to 1,3-Butadiene... [Pg.731]

To complete this chapter, we would like to mention that recent monographs have reviewed the use of in-situ spectroscopies for monitoring heterogeneously catalysed reaction under supercritical conditions, although very few studies in this field has been devoted to the study of the fluid-solid interface.182 The use of a multi-technique approach in order to maximise information under real, in-situ conditions has also been reviewed recently.183 The combined use of powerful spectroscopies with simultaneous on-line analysis of the catalytic activity of the sample will become more widespread in application allowing an interpretation of catalytic behaviour in terms of the physico-chemical properties of the solid. The next frontier in spectroscopic characterisation of metal catalysts will consist of time-dependent analysis of the gas/liquid-solid interface, particularly with a view to analyse short-lived intermediates during catalysed reactions and with the aim to determine the response of the catalyst surface and relate these responses to the physico-chemical properties of the solid. [Pg.116]

As regards the theoretical framework, the form of the resonance eigenfunction according to Eq. (1) constitutes a reference point. Eq. (1) is related to time-dependent analysis (Eq. (6) and subsequent discussion) or to Hermitian K-matrix computations that depend on real values of the energy (Sections 3.1.1 and 3.1.2 and Chapter 6) or to computations that depend on complex energies and non-Hermitian constructions (Sections 3-7, 11). As regards the computational framework, Eq. (1), is implemented in terms of wavefunctions of the form of Eqs. (32,35,37, and 48). [Pg.255]

For energies between 1 and 300 keV, we note an excellent agreement with the experimental data for the excitation to the 2p state of the target. For lower energies our results are higher than the reported experimental data. Since our time-dependent analysis lacks spontaneous emission, our 2p state have an infinite life (stationary state) in comparison to the experimental data which is measured by quenching the 2p state. For the excitation to the metastable 2s state, we note a discrepancy around lOkeV in our results when compared to the experimental data. [Pg.269]

Labarthet FL, Buffeteau T, Sourisseau C. 2001. Time dependent analysis of the formation of a half period surface relief grating on amorphous azopolymer films. J Appl Phys... [Pg.171]

In most current PSAs, the analysis of the event sequence is carried out by a combination of event tree and fault tree analysis since this has been empirically found to be the most efficient way of handling the large logical models that are necessary for a nuclear power plant. However, it is possible to carry out the analysis using fault trees or event trees alone, and, for specific event analysis, dynamic time dependent analysis techniqnes can be used. [Pg.59]

Vatasescu, M. and Masnou-Seeuws, F., Time-dependent analysis of tunneling effect in the formation of ultracold molecules via photoassociation of laser-cooled atoms, Eur. Phys. J. D, 21, 191-204, 2002. [Pg.288]

Williams, R. D., Petrov, V. I., Lu, H. P., Hupp, J. T. Intramolecular electron transfer in biferrocene monocation Evaluation of Franck-Condon effects via a time-dependent analysis of resonance Raman scattering in the extended near-infrared. J Phys Chem A 1997,101, 8070-8076. [Pg.209]

The methods and procedures for the systematic analysis of the output of evolutionary simulations will now be reviewed. This output consists of extremely long lists of numbers, with a consequent occupation of computer disk space. Some standard procedures will be reviewed, but trajectory analysis is an enterprise that depends on the particular kind of chemical problem at hand, and specific functions for time-dependent analysis are often left to the inventive power of the operator. [Pg.238]

Labarthet EL, Bulfeteau T, Sourisseau C (1999) Azopolymer holographie diffiaction gratings time dependent analysis of the diffraction efficiency, birefringence, and surface modulation induced by two linearly polarized interfering beams. J Phys Chem B 103 6690-6699... [Pg.238]

F. M. Bordelon, et al., SATAN IV Program Comprehensive Space-time Dependent Analysis of Loss of Coolant, WCAP-8302 (1974)... [Pg.438]


See other pages where Time-dependent analysis is mentioned: [Pg.302]    [Pg.319]    [Pg.85]    [Pg.4]    [Pg.276]    [Pg.518]    [Pg.868]    [Pg.221]    [Pg.730]    [Pg.730]    [Pg.364]    [Pg.457]    [Pg.567]    [Pg.574]    [Pg.645]    [Pg.1804]    [Pg.277]    [Pg.288]    [Pg.72]    [Pg.185]    [Pg.147]   


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