Spectroscopy performance comparison

Zhu Y, Zhu WH, Tatarchuk BJ (2014) Performance comparison between high temperature and traditional proton exchange membrane fuel cell stacks using electrochemical impedance spectroscopy. J Power Sources 256 250-257... 

In Figure 4, the performance comparison on non-nanoscience and materials nanoscience and materials items for pre-engineering chemistry students, it can be seen that in both the areas of spectroscopy and Lewis structure, the engineering stndents have a higher performance when the format of the item inclndes reference to either nanoscience or special materials. This observation is very interesting, becanse nnlike the areas of intermolecular forces and band theory, neither of these concepts were known to be taught in the context of... 

X-ray absorption spectroscopy has been performed on the isolated Rieske protein from bovine heart mitochondrial bc complex 69) as well as on the Rieske-type cluster in Burkholderia cepacia phthalate dioxygenase (PDO) (72). The analysis performed by Powers et al. 69) was significantly hampered by the fact that the presence of two histidine ligands was not fully recognized therefore, only the results obtained with the dioxygenase where the mononuclear iron has been depleted will be considered here. Table VII gives a comparison of the distances obtained from the fit of the EXAFS spectra assuming an idealized Rieske model and of the distances in the crystal structures... 

In the present context correlation means chemically relating a compound of unknown configuration with a compound of known relative configuration. In this section correlation sequences which do not directly affect the chiral units are discussed. Relations of this type, if carefully applied, are unambiguous and do not depend on mechanistic and/or stereochemical assumptions (also see Sections 4.3.4.1.2. and 4.3.4.1.2.1.). In contrast to the constraints in methodology mentioned in Section 4.3.4.1.2., comparison with the reference sample can be performed by any suitable analytical method, such as gas or liquid chromatography, or NMR spectroscopy. Some examples are ... 

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