Structure analysis methods

COMBINED APPLICATION OF COMPOSITION AND STRUCTURE ANALYSIS METHODS TO THE DETERMINATION OF MAGNESIUM CONCENTRATION AND LOCATION IN BONE... 

The structure of hydroperoxides was studied by the x-ray structural analysis method. The results of the experimental measurements are collected in Table 4.6. 

Kreulen reported that Rasa coal was a humic coal and contained no sapropelites, waxes, or resins (4). He noted that Rasa coal exhibits dual character, i.e., it exhibits both low- and high-rank characteristics. Chemical tests indicated that a small amount of the sulfur present is in side chains, and a large amount occurs in ring structures. Using a statistical structural analysis method based on density, van Krevelen computed that 59% of the carbon in Rasa coal is aromatic (4). 

The molecular structure of the electrode has great influences on the behavior of the catalytic electrode, so it is important to get the exact structure information. There are many structural analysis methods being used for semiconductor materials. Here we listed some in the following sections. 

In conclusion, what we have summarized in this article can be viewed as a very first step in the direction of a novel structural analysis method, which opens a vast new field of experimental research where much work remains to be done. Any 2D-IR spectroscopy certainly will be limited to molecular sizes smaller than are tractable by 2D NMR and x-ray spectroscopy because of the intrinsically poor spectral resolution of vibrational transitions. However, the one tremendous prospect that makes this research worthwhile is the inherent high time resolution of IR spectroscopy, which covers all biologically relevant time scales, starting from the subpicosecond time regime. The IR photon echo experiments have proven experimentally for the first time that the peptide backbone itself indeed fluctuates on these... 

Jensen, L. H. Overview of refinement in macromolecular structure analysis. Methods in Enzymology 115, 227-234 (1985). 

With respect to surface roughness STM is rather touchy in comparison to structural analysis methods such as LEED. LEED is a relatively long range... 

Pore structure analysis methods based upon realistic disordered microstructures may be classified into two types. In one approach, the experimental procedures used to fabricate the material are reproduced, to the greatest extent possible, via molecular simulation, and the resulting amorphous material structure is then statistically analyzed to obtain the desired structural information. In the other approach, adsorbent structural data (e.g., smaU-angle neutron scattering) is used to construct a model disordered porous structure that is statistically consistent with the experimental measurements. As in the first approach, molecular simulations can then be carried out using the derived model structure to obtain the structural characteristics of the original adsorbent. 

Because conventional structural analysis methods (e.g.. X-ray diffraction and transmission electron microscopy) are not effective on amorphous... 

Introductory approaches have been described to formally evaluate design concepts for select structural components made from composites including intraply hybrid composites and strip hybrids. These approaches consist of structural analysis methods coupled with composite micromechanics, finite element analysis in conjimction with composite mechanics, and sensitivity analyses using structural optimization. Specific cases described include ... 

Structural tests are being performed to improve strength prediction methods, to evaluate the adequacy of elevated temperature design rules, and also to verify advanced nonlinear structural analysis methods. 

A direct experimental detection of the state of cobalt traces in the particulate corrosion products is very difficult to obtain. One practical reason for this difficulty is the cobalt concentration, which is usually far too low for the usual structure analysis methods such as X-ray identification of the prevailing chemical compound moreover, the similarity of the crystallographic data of cobalt and nickel ferrites to those of Fe304 complicates the interpretation of the analytical results. However, there are two observations which raise doubts about whether the above-mentioned assumption of cobalt incorporation from the primary coolant into the... 

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