Energy dispersive X-ray analysis EDXA

As the cornea physiologically contains almost no phosphate, we have found evidence that for an osmolar conditioning of the cornea, an electrolyte conditioning is highly probable. We could prove this by means of Energy dispersive X-ray analysis (EDXA) [16], With this method, we have found elevated phosphate contents in the cornea after rinsing one or several times with phosphate buffer [17], This reflects a situation of... 

Schrage, N.P., Benz, K., Beaujean, P., Burchard, W.G., Reim, M. A simple empirical calibration of energy dispersive X-ray analysis (EDXA) on the cornea. Scanning Microsc 7(3), 881-888 (1993)... 

In nature this common set is typically further restricted over wide geographic areas because of the influence or otherwise of soil-forming factors, the most important of which are parent material and degree of weathering. Thus, a typical sample of soil will contain a suite of around six to ten different major minerals. A major mineral may be defined as one that is present at a concentration of a few percent or more, at which it will be readily detectable by routine techniques such as x-ray provider diffraction (XRPD). It is also known as energy-dispersive x-ray analysis (EDXA) or energy-dispersive analysis of x-ray (EDAX) or microscopic examination, either optical or electron. It is also not uncommon for several other minerals to be present in any given soil but usually in amounts that put them below the routine detection limits of many techniques. Nonetheless, these accessory, or trace, minerals can often be concentrated by some means that separates the soil sample into different physical or chemical fractions. Such procedures effectively lower... 

One of the limitations of electron microscopy is that it allows only a visual characterization of the cell wall structure. Once electron microscopy is combined with energy dispersive X-ray analysis (EDXA), the system becomes a powerful analytical tool for elucidating the fine details of lignin morphology in wood. 

Energy dispersive X-ray analysis (EDXA) is of assistance in identifying the principal chemical elements in particular crystals. This information, along with crystal shape, enables one to identify reasonably well the minerals likely to be contacted by a surfactant slug when injected into a core or a reservoir formation. Thus, the basic sand matrix of these materials is revealed while the presence of particular clay minerals, such as kaolinite, can be seen in Berea sandstone and Glenn Sand dolomite appears to be present in significant amounts in the core from the San Andres formation. 

Figure 4. Energy dispersive x-ray analysis (EDXA) of water hyacinth root treated with (NH )i[PtCh]. This method gives the x-ray lines of all elements in the whole field of the microscope (X625), Conditions Pt, Ma — 2.05 keV, La = 9.44 keV and Ca, Ka = 3.69 keV.

Energy-dispersive x-ray analysis EDXA 1 pm Elements >B 0.01 at. -% e beam hv No chemical 119... 

Photograph 7-61 Green belite nest in center of broken clinker. Energy dispersive X-ray analysis (EDXA) indicates calcium, silicon, potassium, and traces of chromium, magnesium, aluminum, sulfur, chlorine, and iron. (S A6681)... 

Direct Porosity Back scatter electron imaging (BSE), energy dispersive x-ray analysis (EDXA)... 

The post-modern era covers the 1990s and beyond. Some of the characteristic activities of this era are the application of rather sophisticated devices such as atomic force microscopy (AFM) in addition to scanning electron microscopy (SEM) and techniques such as energy dispersive X-ray analysis (EDXA) and X-ray diffraction (XRD) [28] and electron microprobe analysis in MIC investigations and studies. 

---