Investigative tools selection

Statistical sampling combined with cluster analysis is a useful investigative tool because it revealed an important characteristic, that is, the presence of float interworking. Not only did the technique reduce the possibility of bias in selecting points to measure, but it also allowed identification of a structural feature hitherto unobserved. 

Temperature dependent lineshape variation of the Pake doublet represents then an experimental evidence of a motion occurring in the solid state. 2H NMR investigations on selectively deuterated compounds, therefore, are important tools for the recognition of molecular motions in solids. This method has been applied to the characterization of molecular motions in molecular solids [8] and inclusion compounds [9]. As an example in Fig. 3.2.4 is reported the effect of the motion about the molecular symmetry axis, either by two-fold or n-fold (n>3) flips, on the deuterium spectrum of a deuterated para-substituted benzene [10]. 

This methodology comprises part of the art of variable selection patience and intuition are the fundamental tools here. It is not necessary to mention that the more you know about the system you are investigating (samples and variables and how they are connected), the more you can have success in the process of finding variables that really are important to your investigation. Variable selection does not occur like magic, at least, not always ... 

An FAB-MS study on several aromahc, aliphatic, and aliphatic-aromatic polysulfides doped with heavy metal salts allowed the detection of adducts of the cyclic sulfides with heavy metal ions Ag, Hg, and Cu - The molecular ions of the cyclic sulfides and those corresponding to the metal adducts appeared in the spectra with widely differing intensities, providing a tool to investigate the selectivity of metals toward macrocyclic sulfides of different structure and size. ... 

Also in this case, the tool selection was carried out according to the correlation matrices. However, since contract design is a novel and almost unexplored field in design, the smdy also analysed the AS-IS process to identify the requirements of collaboration. So the method was derived from the general one but was enhanced with process investigation and consisted of the following steps ... 

While the JHA can be used for specific targeted use (incident investigations, PPE selection, training development, etc.), it must viewed as a beneficial tool for the ongoing overall process. 

The reactivity of various steroid alcohols decreases in the order primary > secondary (equatorial) > secondary (axial) > tertiary. The only systematic investigation relating to the selective protection of steroidal hydroxyl functions has been carried out with the cathylate (ethyl carbonate) group. Since only equatorial hydroxyl groups form cathylates this ester has been used as a diagnostic tool to elucidate the configuration of secondary alcohols. 

Innovation - advocates and opponents origin from microtechnology list of microfabrication techniques selectivity and efficiency as main driver for industrial implementation special properties and general advantages of micro reactors process-development issues BASF investigations on liquid/liquid and gas-phase reactions micro reactors as ideal measuring tools production in micro reactors as exception, the rule will be transfer to mm-sized channels [111],... 

There is a large number of concepts and quantities of this kind used in actual investigations, and a large rate of increase of new formulations. This abundance of interpretative tools could lead somebody to suspect that we have lost any control on the growth and on the use of of these instruments and that interpretation in chemistry is becoming an exercise in which is possible to reach the conclusions one desires by an appropriate selection of the tools. 

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