This study shows that the most dramatic geomorphic threshold in submarine lava separates rhyolitic lava from lower-silica compositions. Extremely viscous rhyolite erupts as jagged lobes and lava branches in submarine environments. An automated classification of sonar data is a useful fir...
The kaolinization is decided by aluminum within the parental rocks, which is, to begin with, changed over to kaolinite through the combination with the accessible silica, which any encourages weathering (i.e., silica loss) past this condition, in this manner, marks the organize of the ...
Siebel W, Schmitt AK, Kiemele E, Danišík M, Aydin F (2011) Acigöl rhyolite field, central Anatolia (part II): geochemical and isotopic (Sr–Nd–Pb, δ18O) constraints on volcanism involving two high-silica rhyolite suites. Contrib Mineral Petrol. doi:10.1007/s00410-011-0651-2 ...
Major element compositions of the high Nb–Ta rhyolites are given in Table3. Their SiO2contents (71.9–72.1 wt%) are high, consistent with their silicic nature. The rhyolites have a moderate Al2O3content (13.8 wt%), with an average aluminum saturation index (A/CNK) of 1.06, indicating ...
www.nature.com/scientificreports OPEN High‑performance thermochromic VO2‑based coatings with a low transition temperature deposited on glass by a scalable technique David Kolenatý, Jaroslav Vlček*, Tomáš Bárta, Jiří Rezek, Jiří Houška & Stanislav ...
This study presented design and analysis of high-speed data optical fiber communication system through EDFA amplifier system. The design with practical data for parameters to maximize the transmission bit-rate is clarified. The bit rate distance product
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The results obtained for T3 strongly support this theory, as the mineral content of detrital origin in the samples collected from this site was greater, and the concentration of authigenic minerals was less than in the samples obtained from T1 and T2. This is in accord with the larger ...
Gas chromatography (GC) is considered to be the method of choice in the analysis of volatile compounds, because of its high resolving power and the availability of universal detection using flame ionization (FID) detectors. However, GC is mainly an analy
Preparation of a chemically-bonded-silica stationary phase (SG-MIX), with different polar and nonpolar functional groups such as hydroxyl (-OH), amino (-NH2), cyano (-CN), phenyl (-Ph), octyl (-C8) and octadecyl (-C18), is described. The characteristics of the prepared packing was done...