Big Chemical Encyclopedia

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

Articles Figures Tables About

Focus on the Configuration

Excimer to Monomer Intensity Ratio. Our approach toward the determination of this information is to focus on the configurational behavior of the pyrene-terminated PEG. Two sets of experiments were performed to separate the intramolecular behavior of the isolated Py-PEG-Py chains from the intermolecular interactions that occur between labeled PEG chains. First, we performed photostationary fluorescence measurements of IJI for fully labeled PEG as a function of the molar ratio of the poly(carboxylic acid) to that of the PEG. These results will contain both intermolecular and intramolecular contributions to the excimer fluorescence. Next, we performed analogous measurements with the same total amount of PEG but with only 1% having pyrene labels. The selection of the relative amount of the tagged polymer is somewhat arbitrary, but it appears to be sufficiently low to provide a reasonable approximation to the behavior of the isolated, labeled PEG chain. These fluorescence results are then subtracted from those for the fully tagged system, leaving just the intermolecular contribution. [Pg.267]

Explicit focus on the configuration problem, in-depth coverage of configuration models, emphasis on model integration, and application of information modeling techniques in decision-making are distinguishing characteristics of this book. [Pg.304]

The contribution Ske(T) is the same for all systems (that have the same vq). regardless of their potential energy of interaction and volume. It is most certainly the same for all phases of any system such as SCL and CR at the same temperature, and we do not have to specifically take it into account. Thus, in general, we can focus on the configurational entropy without any loss of generality. It is obtained by subtracting Ske(T) from Sr(T) [36] ... [Pg.491]

In the books of classical statistical mechanics, the properties of the ideal gas have been evaluated, so we can focus on the configurational contribution. With the Monte Carlo method [17-19], we explore the configuration phase subspace according to the canonical or grand canonical distributions. The corresponding trajectory is essentially the projection of the phase space onto the subspace of coordinates, becoming independent of the subspace of moments. [Pg.357]

The physical and chemical properties of the elements show regular periodic trends that can be explained using electron configurations and nuclear charges. We focus on the physical properties of the elements in this section. A preliminary discussion of the chemical properties of some of the elements appears in Section Other chemical properties are discussed after we introduce the principles of chemical bonding in Chapters 9 and 10. [Pg.534]

Selectivity is determined by a number of factors, such as intrinsic properties of the catalyst complex (metal and ligands), reaction conditions (concentration, temperature, pressure), and reactor configuration (solvent, reactor, process). Here, we will focus on the catalyst properties. [Pg.112]


See other pages where Focus on the Configuration is mentioned: [Pg.191]    [Pg.659]    [Pg.397]    [Pg.376]    [Pg.191]    [Pg.659]    [Pg.397]    [Pg.376]    [Pg.695]    [Pg.403]    [Pg.142]    [Pg.8]    [Pg.265]    [Pg.664]    [Pg.133]    [Pg.150]    [Pg.428]    [Pg.531]    [Pg.33]    [Pg.14]    [Pg.21]    [Pg.22]    [Pg.24]    [Pg.26]    [Pg.110]    [Pg.3]    [Pg.163]    [Pg.129]    [Pg.392]    [Pg.277]    [Pg.79]    [Pg.137]    [Pg.58]    [Pg.145]    [Pg.217]    [Pg.194]    [Pg.172]    [Pg.184]    [Pg.809]    [Pg.171]    [Pg.112]    [Pg.253]    [Pg.302]    [Pg.339]    [Pg.289]    [Pg.997]    [Pg.231]    [Pg.128]   


SEARCH



Focus On

© 2024 chempedia.info