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Final discussion

In the final discussion of the LON team about the implemented teaching approach, teachers were of the common opinion that students understanding of chemical reactions gained through the LON approach was more holistic than they had experienced during previous years. [Pg.321]

In the final discussion abont the LON approach, teachers also stated that stndents ability to connect observations from macro with their notations at submicro and symbolic improved in comparison to previous years. They pointed to the importance of the models in learning about chemical reactions. With concern to that issue in their reflective diaries, teachers wrote ... [Pg.325]

The book offers a theoretical introduction in the first three chapters, provides recent applications in material science in the next four chapters, describes the effects of ultrasound in aqueous solutions in the following five chapters and finally discusses the most exciting phenomenon of sonoluminescence in aqueous solutions containing inorganic materials in subsequent two chapters, before ending with a few basic introductory experiments of sonochemistry and sonoluminescence in the concluding chapter. [Pg.412]

The purpose of this chapter is to show and discuss the connection between TD-DFT and Bohmian mechanics, as well as the sources of lack of accuracy in DFT, in general, regarding the problem of correlations within the Bohmian framework or, in other words, of entanglement. In order to be self-contained, a brief account of how DFT tackles the many-body problem with spin is given in Section 8.2. A short and simple introduction to TD-DFT and its quantum hydrodynamical version (QFD-DFT) is presented in Section 8.3. The problem of the many-body wave function in Bohmian mechanics, as well as the fundamental grounds of this theory, are described and discussed in Section 8.4. This chapter is concluded with a short final discussion in Section 8.5. [Pg.107]

We finally discuss the contributions that have been neglected and indicate that they lead to negligible contributions in the limit of small concentration. [Pg.197]

Covering monometallic (Pd, Sn) and multimetallic (Pd-Sn, Pd-Ag) systems, several examples are presented in this chapter to illustrate the possibility offered by this chemistry to control the particle size distribution and the bimetallic interaction at a molecular level. This work is supported by a multitechnique characterization approachusing SnM6ssbauerspectroscopy,X-rayphotoelectron spectroscopy (XPS), low-energy ion spectroscopy (LEIS), and transmission electron microscopy (TEM). Catalytic performances in hydrogenation of different unsaturated hydrocarbons (phenylacetylene, butadiene) are finally discussed in order to establish structure-reactivity relationships. [Pg.257]

Let us finally discuss to what extent the MFT method is able to (i) obey the principle of microreversibility, (ii) account for the electronic phase coherence, and (iii) correctly describe the vibrational motion on coupled potential-energy surfaces. It is a well-known flaw of the MFT method to violate quantum microreversibility. This basic problem is most easily rationalized in the case of a scattering reaction occurring in a two-state curve-crossing system, where the initial and final state of the scattered particle may be characterized by the momenta p, and pf, respectively. We wish to calculate the probability Pi 2 that... [Pg.275]

Chip-based microdevices are finally discussed, regarding fabrication methods, designs, MS interfacing, and applications. Current capabilities and limitations for future use are emphasized considering improvements in methodology and instrumentation. [Pg.478]

This paper considers the hyperspherical harmonics of the four dimensional rotation group 0(4) in the same spirit ofprevious investigations [2,11]), where the possibility is considered of exploiting different parametrizations of the 5" hypersphere to build up alternative Sturmian [12] basis sets. Their symmetry and completeness properties make them in fact adapt to solve quantum mechanical problems where the hyperspherical symmetry of the kinetic energy operator is broken by the interaction potential, but the corresponding perturbation matrix elements can be worked out explicitly, as in the case of Coulomb interactions (see Section 3). A final discussion is given in Section 4. [Pg.292]

Menaker In this final discussion, I am going to open the floor for questions that have arisen at any point in the meeting. [Pg.281]

In the light of the more complete study of ring-halogenated triphenylchloro-methanes in this paper, the free radical hypothesis was back - if it ever was excluded in the previous paper - in the final discussion of the constitution of triphenylmethyl , now with two tautomeric triphenylmethyl radical structures in equilibrium with each other and the Jacobson dimer 1 (Scheme 2). Note that the radical was symbolized by an open valence (a thick line is used here for clarity). The strong results obtained with 3 (Scheme 1) were explained by removal of the quinoid bromine atom from 4 giving a radical 6 which tautomerized to the triphenylmethyl analogue 7. By analogy with the... [Pg.66]

This review will first present the metal/epoxy resin adhesive system and discuss how the presence of metal oxides influences adhesion secondly, present the reasons why these systems exhibit very good adhesion strength under dry conditions and why this adhesion strength is greatly reduced in the presence of water thirdly, examine possible methods of increasing their durability in wet environments and finally, discuss some of the spectroscopic techniques that are currently being used to aid in the advancement of metal/polymer adhesion technology. [Pg.36]

In the final discussion G. R. Burbidge stressed that the problems of energy conversion from a primary energy source to the form of relativistic particles needed for the radio emission are entirely unsolved. In particular, the production of cosmic ray particles requires an acceleration mechanism, of an efficiency at least a few orders of magnitude larger than that of the best man-made accelerators.109... [Pg.30]

In the interpretation of the data in Tables 7-9 we shall discuss first reactions proceeding by mechanism SE2(open), then those proceeding by mechanism SE2(co-ord), and finally discuss the rather complicated situation that arises in the intermediate region of SE2(cycIic) mechanisms. [Pg.240]

Considering the large number of studied cases, for more clarity, we will first focus on clusters with the same Si-core size (core diameter of 0.7 nm) and finally discuss the role played by size. [Pg.224]

The experimental studies of three-component systems based on phase equilibria follow the same principles and methods discussed for two-component systems. The integral form of the equations remains the same. The added complexity is the additional composition variable the excess chemical potentials become functions of two composition variables, rather than one. Because of the similarity, only those topics that are pertinent to ternary systems are discussed in this section of the chapter. We introduce pseudobinary systems, discuss methods of determining the excess chemical potentials of two of the components from the experimental determination of the excess chemical potential of the third component, apply the set of Gibbs-Duhem equations to only one type of phase equilibria in order to illustrate additional problems that occur in the use of these equations, and finally discuss one additional type of phase equilibria. [Pg.280]

In this contribution, we summarize the Stephens theory of VCD (Section 2.4.2), discuss its implementation using ab initio methods, most importantly DFT (Section 2.4.3), discuss the determination of the ACs of chiral molecules using VCD (Section 2.4.4), and, finally, discuss future developments expected to enhance the prediction of VCD spectra (Section 2.4.5). [Pg.181]

Let us finally discuss System 33 of Table 1 wherein an electron donor, namely the amphiphilic osmium complex, rather than acceptor is embedded into the membrane as the electron carrier. The high quantum yield of PET across the membrane in this system is due to the fact that the primary oxidation of the... [Pg.24]

This paper reviews briefly the mechanisms responsible for mineral luminescence, then turns to less common modes of excitation, particularly ion and radical recombination luminescence, and finally discusses luminescence on the scale of remote sensing of planetary surfaces. [Pg.121]

Many writers on electrochemistry, perhaps most, refer to the electrical potential of a phase, particularly of an electrode, as if it was common knowledge what this means. This seems scarcely satisfactory, but as most electrochemical phenomena are concerned with the sum of two or more phase boundary potentials, the indefiniteness does not usually matter, in the final discussion of electromotive forces. [Pg.304]

In this review we shall examine the general requirements for a reaction to be chemiluminescent, present in more detail the three important generalized mechanisms of chemiluminescence in solution, and finally discuss specific chemiluminescent systems. [Pg.189]

We first introduce the simplest NMR and EPR instruments, then present the relevant theory, and finally discuss the more specialized and advanced techniques. [Pg.708]


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Final general discussion

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