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| 1 | Kinetics of chemical leaching of chalcopyrite from low grade copper ore: behavior of different size fractions显示文摘The kinetics of the chemical leaching of copper from low grade ore in ferric sulfate media was investigated using the constrained least square optimization technique. The experiments were carried out for different particle sizes in both the reactor and column at constant oxidation-reduction potential (Eh), pH values, and temperature. The main copper mineral was chalcopyrite. About 40% of Cu recovery is obtained after 7 d of reactor leaching at 85℃ using -0.5 mm size fraction, while the same recovery is obtained at 75℃ after 24 d. Also, about 23% of Cu recovery is obtained after 60 d of column leaching for +4--8 mm size fraction whereas the Cu recovery is as low as about 15% for +8--12.7 and +12.7--25 mm size fractions. A 4-stage model for chalcopyrite dissolution was used to explain the observed dissolution behaviors. The results show that thick over-layers of sulphur components cause the parabolic behavior of chalcopyrite dissolution and the precipitation of Fe3+ plays the main role in chalcopyrite passivation. In the case of coarse particles, transformation from one stage to another takes a longer time, thus only two stages including the initial reaction on fresh surfaces and S0 deposition are observed. | H. Naderi M. Abdollahy N. Mostoufi M.J. Koleini S.A. Shojaosadati Z. Manafi | 2011 | International Journal of Minerals,Metallurgy and Materials2011，18，6： | 6 |
| 2 | 采用工艺优化和动力学模型提高铀矿生物柱浸的回收率(英文)显示文摘采用嗜酸氧化亚铁硫杆菌提高轴矿的生物柱浸回收率,利用Plackett-Burman因子设计法研究七因素对铀矿生物柱浸显著性的影响。选取[Fe^(2+)]_(initial)、pH值、通气速率和接种率4个显著性参数进行优化试验,采用一种中心复合设计法研究这些参数对铀矿生物浸出的影响。铀矿生物浸出率最大时((90.27±0.98)%)对应的优化参数如下:[Fe^(2+)]_(initial)=2.89 g/L、通气速率420 mL/min、pH 1.45、接种率6%(体积分数)。[Fe^(2+)]_(initial)对铀矿生物浸出的影响最大。由预测模型得到铀的最大回收率为92.01%,此数据与实验所得结果吻合较好。最佳浸出条件下铀矿浸出渣的分析结果表明,矿物表面形成了黄钾铁矾。最佳浸出条件下铀的生物柱浸率提高,黄钾铁矾沉淀量减少。动力学模型预测结果表明,铀的回收率与Fe^(2+)浓度密切相关。 | H. ZARE TAVAKOLI M. ABDOLLAHY S. J. AHMADI A. KHODADADI DARBAN | 2017 | Transactions of Nonferrous Metals Society of China2017，27，12： | 4 |
| 3 | The International Criteria for Beh?et’s Disease (ICBD): a collaborative study of 27 countries on the sensitivity and specificity of the new criteria显示文摘 | F. Davatchi S. Assaad‐Khalil K.T. Calamia J.E. Crook B. Sadeghi‐Abdollahi M. Schirmer T. Tzellos C.C. Zouboulis M. Akhlagi A. Al‐Dalaan Z.S. Alekberova A.A. Ali A. Altenburg E. Arromdee M. Baltaci M. Bastos S. Benamour I. Ben Ghorbel A. Boyvat L. Carvalho | 2014 | J Eur Acad Dermatol Venereol2014，，3： | 1 |
| 4 | Heavy metals content of canned tuna fish显示文摘 | F. Emami Khansari M. Ghazi-Khansari M. Abdollahi | 2004 | Food Chemistry2004，，2： | 1 |
| 5 | Connective tissue growth factor, matrix regulation, and diabetic kidney disease显示文摘 | Susan V. McLennan Maryam Abdollahi Stephen M. Twigg | 2013 | Current Opinion in Nephrology and Hypertension2013，，1： | 1 |
| 6 | Flexible demand response programs modeling in competitive electricity markets显示文摘 | M. Parsa Moghaddam A. Abdollahi M. Rashidinejad | 2011 | Applied Energy2011，，9： | 1 |
| 7 | 炎症性肠病患者抗氧化能力的变化与唾液中表皮生长因子及NO水平的关系 | Jahanshahi G. Motavasel V. Rezaie A. M. Abdollahi 王志宇 | 2005 | 世界核心医学期刊文摘(胃肠病学分册)2005，0，7： | 0 |
| 8 | On Connected Tetravalent Cayley Graphs of a Non-abelian Group of Order 3p2显示文摘在这份报纸,我们决定 p 是比 3 大的一个素数的顺序 3p 2, 的一个 non-abelian 组的所有四价的 Cayley 图,并且与周期的 Sylow p 亚群。我们证明所有这些四价的 Cayley 图是正常的。这些 Cayley 图的完整的自守组被给,一半传递性和这些图的弧传递性被调查。我们证明这个组是 5-CI-group。 | M.R. Darafsheh M. Abdollahi | 2017 | Algebra Colloquium2017，24，3： | 0 |
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