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| 1 | Effects of nanobubble and hydrodynamic parameters on coarse quartz flotation显示文摘Quartz, the second most abundant mineral in the earth's crust, is a gangue mineral in practically every flotation process. Coarse quartz flotation has been a long standing problem in various mineral processing plants to reduce milling cost and increase valuable mineral recovery. Based on this, the effects of nanobubbles(NBs) and hydrodynamic parameters on coarse quartz particle flotation were systematically investigated. Mechanical flotation experiments were carried out using the 7 cm and 9 cm diameter impellers in order to produce different hydrodynamic conditions. 900–1300 rpm impeller speeds were used for the 7 cm diameter impeller and 554–786 rpm for the 9 cm diameter impeller. The results show that the presence of NBs increased the flotation recovery of à425 + 106 lm quartz by up to 21%. For the7 cm diameter impeller, the maximum flotation recoveries of 86.4% and 98% were obtained in the absence and presence of NBs at Reynolds number(Re) of 81,000 and 66,000, respectively. For the 9 cm diameter impeller, the maximum recoveries of 86.3% and 97.5% were obtained in the absence and presence of NBs at Re of 90,000 and 75,000, respectively. NBs increased the flotation rate constant up to 36%. | Sabereh Nazari Sied Ziaedin Shafaei Mahdi Gharabaghi Rahman Ahmadi Behzad Shahbazi Fan Maoming | 2019 | International Journal of Mining Science and Technology2019，29，2： | 10 |
| 2 | Comparison of litterfall production in three forest types in Jeju Island, South Korea显示文摘Litterfall, which is influenced by physical and biological factors, is a major pathway for carbon and nutrient cycling in forest ecosystems. The purpose of this study was to investigate monthly litterfall production in three forests in Jeju Island differentiated by forest composition and precipitation: Cheongsu(Quercus glauca as the dominant species;low precipitation), Seonheulb(Q. glauca as the dominant species;high precipitation), and Seonheulm(Q. glauca and Pinus thunbergii as the dominant species;high precipitation). Litterfall was collected monthly from April to December 2015 and divided into leaf litter, twig, bark, seeds, and unidentified materials.Seasonal patterns of litterfall production varied across stands according to their species composition. However,the amount of leaf litterfall and total litterfall were comparable among stands, ranging from 362 to 375 g m-2 for leaf litter and 524 g m-2 to 580 g m-2 for total litterfall.Oak leaf litter in May was the highest in all stands, while needle litter was the highest in December in Seonheulm.High twig litterfall in July may be attributable to high rainfall with strong winds and storms during the rainy season. Although forest type and climate factor had no influence on litterfall amounts in this study, the pattern of litterfall production was species dependent, suggesting diverse effects on carbon and nutrient cycling in these forests. | Ji Young An Si Ho Han Woo Bin Youn Sang Ick Lee Afroja Rahman Huong Thi Thuy Dao Jeong Min Seo Aung Aung Hyung-Soon Choi Hwa Ja Hyun Byung Bae Park | 2020 | Journal of Forestry Research2020，31，3： | 2 |
| 3 | Pediatric enuresis,sleep apnea,and adenotonsillectomy显示文摘 | Jeyakumar A Armbrecht ES Rahman SI | | 0，，2： | 1 |
| 4 | A distinctive pattern ofbeauveria bassiana-biotransformed ginsenoside products triggers mitochondria/ FasL-mediated apoptosis in colon cancer cells显示文摘 | Gum SI Rahman MK Won JS | 2016 | Phytother Res2016，30，1： | 1 |
| 5 | Primary paraganglioma of the bladder in a 14-year-old boy显示文摘 | Rahman SI Matthews LK Shaikh H | 1995 | Br J Urol1995，75，5： | 1 |
| 6 | A comparative study of two angiogenic factors:vascular endothelial growth factor and angiogenin in induced sputum from asthmatic children in acute attack显示文摘 | Abdel Rahman AM Sahrigy SA Bakr SI | 2006 | Chest2006，129，2： | 1 |
| 7 | Assessment of genotoxic effects of lead in occupationally exposed workers 显示文摘 | Chinde S Kumari M Devi KR Murty US Rahman MF Kumari SI | 2014 | Environ Sci Pollut Res2014，21，11： | 1 |
| 8 | A comparative study of two angiogenie factors : vascular endothelial growth factor and angio- genin in induced sputum from asthmatic children in acute attack 显示文摘 | Abdel - Rahman AM el - Sahrlgy SA Bakr SI | 2006 | Chest2006，129，2： | 1 |
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