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Copyright of Journal of Hydrobiology is the property of Editorial Department of Journal of Hydrobiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Taking anthracite from Taixi and North Korea respectively as references, the amorphous graphite associated with high metamorphosed anthracite was qualitatively and quantitatively analyzed in this study. The demineralized test samples were analyzed through X-ray and Raman spectrum, and then the demineralized test samples were separated by float-and-sink analysis. The results show that the C(002) diffraction peaks of parts of demineralized graphite associated with high metamorphosed anthracite from different sampling positions exist, their peak intensity is different, and the diffraction peaks are broadening. The comparison of G band and D band parameters of Raman spectrum shows that the thermal evolution stage of amorphous graphite associated with high metamorphosed anthracite is between paranthracite and flake graphite. Using the disordered carbon content of Raman spectrum to characterize the anthracite relative content of amorphous graphite associated with high metamorphosed anthracite, and with the content of disordered carbon of Raman spectrum equivalent to the total float content, its corresponding separation density can be considered to be the separation density between amorphous graphite and anthracite of the samples, its value ranges from 1.665 g/cm3 to 1.681 g/cm3. [ABSTRACT FROM AUTHOR]