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| 1 | Purification,application and current market trend of natural graphite:A review显示文摘Graphite has a stacked planar sp2-hybridized C6 ring structure,displaying a polymorphism with rhombohedral,hexagonal,and turbostratic.Based on its structure-property relationship,it affords a variety of technologically innovative applications or performances in industries,such as lithium-ion batteries,fuel cells,two dimensional graphene,water purification,electronics,fiber optics,spintronics,refractories,electrical products,electric vehicles,etc.The monetary value of graphite depends largely on carbon content and flake size.However,the physical separation of graphite from its ore body is known to be very expensive,energy intensive and time-consuming.Hence,this study extensively describes a current purification method for producing high-quality graphite material with impurities reaching about 10–100 mg/kg,attracting a lot of end users.It also describes the potential applications of graphite materials and identifies the future scope of a new market,depending on material purity.Finally,the current and future graphite-mining countries are investigated in details. | Allah D.Jara Amha Betemariam Girma Woldetinsae Jung Yong Kim | 2019 | International Journal of Mining Science and Technology2019，29，5： | 17 |
| 2 | Mineralogical and petrographic analysis on the flake graphite ore from Saba Boru area in Ethiopia显示文摘The mineralogy and petrography of natural graphite in Saba Boru of Ethiopia indicate that there exists flake graphite with a slightly oval structured fine size according to our study on thin and polished sections.Herein,for estimating the carbon content in graphite,the ASTM-C561,the test method for ash in a graphite sample,was used.For characterizing graphite,x-ray diffraction,x-ray fluorescence,inductively coupled plasma mass spectroscopy,and scanning electron microscopy were also used.Chemical analysis of ore samples determined that the average compositions are 63.35%SiO2,15.45%Al2O3,2.36%Fe2O3,2.07%K2O,less than1%others,and loss-on-ignition(LOI)in the range of^4.74%–37.42%.The total carbon content of graphitic ore ranged from 4.11%to 33.14%.Importantly,when graphite is concentrated through floatation,its average purity and recovery are 92.97%and 90.82%,respectively.Furthermore,once the graphite concentrates are treated with hydrofluoric acid,the average value attains a high grade of 96.48%C.Moreover,the average ash content is 81.93%(pre-flotation)and 3.1%(post-flotation),respectively.Finally,after beneficiation,a silica is identified as a major gangue(85.88%),usable as a raw material for other purposes such as cement.Hence,these graphite-bearing rocks seem to be worth exploring for commercialization opportunities. | Allah D.Jara Girma Woldetinsae Amha Betemariam Jung Yong Kim | 2020 | International Journal of Mining Science and Technology2020，30，5： | 12 |
| 3 | Pdmary malignant melanoma of the urethra:a clinicopathologic analysisof 15 cases显示文摘 | Oliva E Qutnn TR Amha MB | 2000 | Am J Surg Pathol2000，24，6： | 1 |
| 4 | Seasonal variation in phytoplankton primary production in relation to light and nutrients in Lake Awasa, Ethiopia显示文摘 | Demeke Kifle Amha Belay | 1990 | Hydrobiologia1990，，3： | 1 |
| 5 | Absence of Integrin avb3 Enhances Vascular Leak in Mice by Inhibiting Endothelial Cortical Actin Formation显示文摘 | George Su Amha Atakilit | 2012 | Res Cri Care Med2012，185，： | 1 |
| 6 | EMMPRIN modulates migration and deposition of TN - C in oral squamous carcinoma显示文摘 | Dongmin D Amha A Daniel M | 2008 | Anticancer Res2008，28，： | 1 |
| 7 | αvβ6-Fyn signaling promotes oral cancer a progression显示文摘 | Xiaoxu Li Brian L Sehrnidt Amha | 2003 | J Biol Chem2003，278，41： | 1 |
| 8 | Current knowledge on potential health benefits of Spirulina 显示文摘 | Amha Belay Yoshimichi Ota Kazuyuki Miyakawa | 1993 | Journal of Applied Phycology1993，5，： | 1 |
| 9 | The potential application of Spirulina (Arthrospira) as a nutritional and therapeutic supplement in health management显示文摘 | AMHA BELAY | 2002 | J Am Nutraceut Associat2002，5，2： | 1 |
| 10 | Current knowledge on potential health benefits of Spirulina显示文摘 | Amha Belay Yoshimi Shiota Kazuyuki Miyakawa | 1993 | Journal of Applied Phyeology1993，5，： | 1 |
| 11 | Current knowl-edge on potential health benefits of spirulina 显示文摘 | Amha Belay Yoshimichi Ota Kaznyuki Miya Kawa | 1993 | Journal of Applied Ph-ycology1993，，5： | 1 |
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