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| 1 | Comparing potentials for gas outburst in a Chinese anthracite and an Australian bituminous coal mine显示文摘Gas outbursts in underground mining occur under conditions of high gas desorption rate and gas content,combined with high stress regime, low coal strength and high Young's modulus. This combination of gas and stress factors occurs more often in deep mining. Hence, as the depth of mining increases, the potential for outburst increases. This study proposes a conceptual model to evaluate outburst potential in terms of an outburst indicator. The model was used to evaluate the potential for gas outburst in two mines, by comparing numerical simulations of gas flow behavior under typical stress regimes in an Australian gassy mine extracting a medium-volatile bituminous coal, and a Chinese gassy coal mine in Qinshui Basin(Shanxi province) extracting anthracite coal. We coupled the stress simulation program(FLAC3D) with the gas simulation program(SIMED II) to compute the stress and gas pressure and gas content distribution following development of a roadway into the targeted coal seams. The data from gas content and stress distribution were then used to quantify the intensity of energy release in the event of an outburst. | Li Guoqing Saghafi Abouna | 2014 | International Journal of Mining Science and Technology2014，24，3： | 8 |
| 2 | Discussion on determination of gas content of coal and uncertainties of measurement显示文摘Gas content of coal is mostly determined using a direct method, particularly in coal mining where mine safety is of paramount importance. Direct method consists of measuring directly the volume of gas desorbed from coal in several steps, from solid then crushed coal. In mixed gas conditions the composition of the desorbed gas is also measured to account for contribution of various coal seam gas in the mix. The determination of gas content using the direct method is associated with errors of measurement of volume of gas but also the errors associated with measurement of composition of the desorbed gas. These errors lead to uncertainties in reporting the gas content and composition of in-situ seam gas. This paper discusses the current direct method practised in Australia and potential errors and uncertainty associated with this method. Generic methods of estimate of uncertainties are also developed and are to be included in reporting gas content of coal. A method of direct measurement of remaining gas in coal following the completion of standard gas content testing is also presented. The new method would allow the determination of volume of almost all gas in coal and therefore the value of total gas content. This method is being considered to be integrated into a new standard for gas content testing. | Abouna Saghafi | 2017 | International Journal of Mining Science and Technology2017，27，5： | 5 |
| 3 | Greenhouse gas emissions from shallow uncovered coal seams显示文摘This study discusses a method of quantifying emissions from surface coal mining that has been trialled in Australia. The method is based on direct measurement of surface emissions from uncovered coal seams in mine pits, concurrent measurement of residual gas content of blasted coal in mine pits, and measurement of pre-mining gas content of the same seam from cores retrieved from exploration boreholes drilled away from active mining. The results from one of the mines studied are presented in this paper. In this mine,the pre-mining gas content of the target seam was measured using cores from an exploration borehole away from active mining. Gas content varied from 0.7 to 0.8 m3/t and gas composition varied from16% to 21% CH4(84–79% CO2). In-pit measurements included seam surface emissions and residual gas content of blasted and ripped coal. Residual gas content varied from 0.09 to 0.15 m3/t, less than twofold across the mine pit. Composition of the residual gas was in general 90% CO2and 10% CH4, with slight variation between samples. Coal seam surface emissions varied from 1.03 to 7.50 mL of CO2-e per minute and per square meter of the coal seam surface, a sevenfold variation across the mine pit. | Saghafi Abouna | 2014 | International Journal of Mining Science and Technology2014，24，3： | 3 |
| 4 | Extracorporeal liver perfusion system for successful hepatic support pending liver regeneration or liver transplantation 显示文摘 | Abouna GM Ganguly PK Hamdy HM | 1999 | Transplantation1999，67，12： | 1 |
| 5 | Extracorporeal liver perfusion system for successful hepatic support pending liver regeneration or liver transplantation 显示文摘 | Abouna GM Gan guly PK Hamdy HM | 1999 | Transplantation1999，67，12： | 1 |
| 6 | Successful ex vivo liver perfusion system for hepatic failure pending liver regeneration or liver transplantation显示文摘 | Abouna GM Ganguly P Jabur S | | 0，，1： | 1 |
| 7 | Extracorporeal liver perfusion system for successful hepatic support pending liver regeneration or liver transplantation: a pre-clinical controlled trial显示文摘 | Ganguly PK Hamdy HM | 1999 | Transplantation1999，67，： | 1 |
| 8 | Non-β-cell progenitors of β-cells in pregnant mice显示文摘 | Abouna S Old RW Pelengaris S | | 0，，： | 1 |
| 9 | Differential regulation by ambient pH of putative virulence factor secretion by the phytopathogenic fungus Botrytis cinerea显示文摘 | Manteau S Abouna S Lambert B | 2003 | FEMS Microbiology Ecology2003，43，3： | 1 |
| 10 | Extracorporeal liver perfusion system for successful hepatic support pending liver regeneration or liver transplantation显示文摘 | Abouna GM Ganguly PK Hamdy HM | 1999 | Transplantation1999，67，12： | 1 |
| 11 | Ethical issue in organ and tissue transplantation显示文摘 | ABOUNA G M | 2003 | Exp Clin Transplantation2003，1，2： | 1 |
| 12 | A Tier 3 method to estimate fugitive gas emissions from surface coal mining显示文摘 | Abouna Saghafi | 2012 | International Journal of Coal Geology2012，，： | 1 |
| 13 | Organ shortage crisis:problems and possible solutions显示文摘 | Abouna GM | 2008 | Transplant Proc2008，40，1： | 1 |
| 14 | Hepatic coma due to fulminating hepatitis treated with extracorporeal pig-liver perfusion显示文摘 | | 1969 | Brit J Surg1969，56，： | 1 |
| 15 | Immunological studies receiving repeated allogenic and xenogenic liver hemoperfusion显示文摘 | Ameniya H Andress G | 1974 | Tranpl1974，18，： | 1 |
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