Removal and recovery of uranium (VI) from aqueous solutions by immobilized Aspergillus niger powder beads
作者：
Ding, De-Xin* ;Tan, Xiang;Hu, Nan;Li, Guang-Yue;Wang, Yong-Dong;...
期刊：
Bioprocess and Biosystems Engineering ,2012年35(9):1567-1576 ISSN：1615-7591
通讯作者：
Ding, De-Xin
作者机构：
[Li, Guang-Yue; Tan, Yan; Hu, Nan; Tan, Xiang; Ding, De-Xin; Wang, Yong-Dong] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.;[Tan, Yan; Ding, De-Xin] Cent S Univ, Sch Resources & Safety Engn, Changsha 410083, Peoples R China.;[Ding, De-Xin] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, 28 W Changsheng Rd, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Ding, De-Xin] U;Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, 28 W Changsheng Rd, Hengyang 421001, Hunan, Peoples R China.
关键词：
Biosorption;Uranium;Aspergillus niger;Equilibrium;Kinetics
摘要：
The immobilized Aspergillus niger powder beads were obtained by entrapping nonviable A. niger powder into Ca-alginate gel. The effects of pH, contact time, initial uranium (VI) concentration and biomass dosage on the biosorption of uranium (VI) onto the beads from aqueous solutions were investigated in a batch system. Biosorption equilibrium data were agreeable with Langmuir isotherm model and the maximum biosorption capacity of the beads for uranium (VI) was estimated to be 649.4 mg/g at 30 °C. The biosorption kinetics followed the pseudo-second-order model and intraparticle diffusion equation. The variations in enthalpy (26.45 kJ/mol), entropy (0.167 kJ/mol K) and Gibbs free energy were calculated from the experimental data. SEM and EDS analysis indicated that the beads have strong adsorption capability for uranium (VI). The adsorbed uranium (VI) on the beads could be released with HNO3 or HCl. The results showed that the immobilized A. niger powder beads had great potential for removing and recovering uranium (VI) from aqueous solutions. © Springer-Verlag 2012.
语种：
英文
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Fractal character of structural control on uranium mineralization in south china
作者：
Xie, Yanshi;Tan, Kaixuan;Chen, Liang;Huang, Wei;Hu, Kaiguang;...
期刊：
Applied Mechanics and Materials ,2012年229-231:2597-2600 ISSN：1660-9336
通讯作者：
Xie, Y.(xie_yanshi@qq.com)
作者机构：
[Tan, Kaixuan; Hu, Kaiguang; Chen, Liang; Huang, Wei; Wang, Xiucai; Xie, Yanshi] School of Nuclear Resource and Nuclear Fuel Engineering, University of South China, Hengyang Hunan, China;[Chen, Liang] Post-doctoral Research Station of Mining Engineering, University of South China, Hengyang Hunan 421001, China
通讯机构：
[Xie, Y.] S;School of Nuclear Resource and Nuclear Fuel Engineering, , Hengyang Hunan, China
会议名称：
4th International Conference on Mechanical and Electrical Technology, ICMET 2012
会议时间：
24 July 2012 through 26 July 2012
关键词：
Faults;Fractal;South china;Uranium deposits
摘要：
South China is the most important uranium producer in the country. Most uranium deposits in south China are strictly controlled by NE-NNE trending regional fracture structure. Fractal analyses on spatial distribution of uranium deposits and regional fracture structure in south China have been done in this paper. It indicates that the spatial distribution of both uranium deposits and regional fracture structure in south China show fractal character. The fractal dimension D=1.4142 for the spatial distribution of regional fracture structure is significantly greater than the critical value and it indicate a higher ripening degree in the fracture structure evolution and an advantages to fluid flow and uranium mineralization. The fractal dimension D=1.0527 for the spatial distribution of uranium deposits in south China show a lower complexity than regional fracture structure. The fractal spatial distribution of uranium deposits in south China is the result of the evolution of the fractal fracture structure system. ©(2012) Trans Tech Publications, Switzerland.
语种：
英文
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诱变绳状青霉吸附铀的行为研究
作者：
孙静;丁德馨;胡南;李广悦;王永东
期刊：
环境科学学报 ,2012年32(10):2384-2393 ISSN：0253-2468
通讯作者：
Ding, D.
作者机构：
[胡南; 李广悦; 王永东; 丁德馨; 孙静] 南华大学
通讯机构：
Key Discipline Lab. for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, China
关键词：
生物吸附;诱变绳状青霉;铀;动力学;吸附机理
摘要：
先后采用盐酸羟胺和紫外光辐射,对绳状青霉(Penicillium funiculosum)进行诱变,并用红外光谱分析了诱变绳状青霉细胞表面官能团的变化,采用静态吸附试验研究了铀溶液的pH、温度、初始铀浓度、吸附时间、菌体投加量等因素对其吸附铀的影响.通过对动力学模型、等温吸附模型和热力学方程进行拟合,研究了诱变绳状青霉吸附铀的行为.采用扫描电镜、能谱仪和红外光谱仪分析了吸附前后诱变绳状青霉细胞表面的形貌、化学组成和官能团结构的变化,进而探讨了吸附过程可能涉及的反应机理.结果表明,诱变绳状青霉在pH=6时吸附铀的效果最好,8h即达到吸附平衡,最大吸附量为200mg·g~(-1),对铀的吸附为细胞表面的缔合—OH、—CHO、不饱和键、—NH_2、—PO_4~(3-)等与铀的配位络合反应.
语种：
中文
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五种水生植物对水中铀的去除作用
作者：
胡南;丁德馨;李广悦;王永东;李乐;...
期刊：
环境科学学报 ,2012年32(7):1637-1645 ISSN：0253-2468
通讯作者：
Ding, D.
作者机构：
[胡南; 丁德馨; 李广悦; 王永东; 李乐; 郑济芳] 南华大学铀矿冶生物技术国防重点学科实验室
通讯机构：
Key Discipline Lab. for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, China
会议名称：
中国核学会2011年年会
会议时间：
2011-10-11
会议地点：
贵阳
会议论文集名称：
中国核学会2011年年会论文集
关键词：
铀;水生植物;植物修复;满江红
摘要：
采用水培实验,研究了浮叶植物野生水葫芦（Eichhornia crassipes）、漂浮植物浮萍（Lemna minor L）、满江红（Azolla imbircata）、沉水植物菹草（Potamogeton crispus）、挺水植物空心莲子草（Alligator Alternanthera Herb）在初始铀浓度分别为0.15、1.50和15.00mg·L-1水中的生长状况及它们对水中铀的去除能力.结果表明,在21d的水培试验期内,满江红对铀表现出了最强的抗性,0.15、1.50和15.00mg·L-1的铀对满江红的生长抑制率分别只有4.56%、2.48%和6.79%,而满江红对水中铀的去除率分别达到了94%、97%和92%.进一步的试验表明,每1L水中种植7.5g满江红,可以获得最大的铀去除率,将初始铀浓度为1.25、2.50、5.00和10.00mg·L-1的水体降至国家排放标准（GB23727-2009）规定值（0.05mg·L-1）以下分别需要17、19、23和25d.研究结果为进一步开展铀污染水体植物修复的研究打下了基础.
语种：
中文
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Paleoenvironmental evolution of early Paleogene in the Sanshui Basin indicated from factor analysis of main elements
作者：
Chen, Liang* ;Wang, Zhengqing;Xie, Yanshi;Huang, Wei
期刊：
Advanced Materials Research ,2012年518-523:5813-5816 ISSN：1022-6680
通讯作者：
Chen, Liang
作者机构：
[Chen, Liang] Univ S China, Res Stn Min Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Chen, Liang] U;Univ S China, Res Stn Min Engn, Hengyang 421001, Hunan, Peoples R China.
会议名称：
1st International Conference on Energy and Environmental Protection (ICEEP 2012)
会议时间：
JUN 23-24, 2012
会议地点：
Hohhot, PEOPLES R CHINA
会议主办单位：
[Chen, Liang] Univ S China, Res Stn Min Engn, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Factor Analysis (FA);Paleoenvironmental Evolution;Paleogene;SanShui Basin
摘要：
In this paper, factor analysis are used to study the early Paleogene paleoenvironmental evolution from the Sanshui Basin, and main conclusions can be obtained as follows: stage I (89.0-73.0m), relatively dry and relatively low temperatures; stage II (73.0-52.5m), warm and humidity of the climate and environment; stage III (52.5-22.5m), the ancient climate conditions change quickly, showing the alternating warm and humidity and dry; stage IV (22.5-0m), prevailing warm and moist climatic conditions.
语种：
英文
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On problems and countermeasures of mining ecological security: In the case of Hengyang
作者：
Yang, Yueping* ;Yang, Shijiao;Huang, Qiusheng
期刊：
Advanced Materials Research ,2012年518-523:5086-5090 ISSN：1022-6680
通讯作者：
Yang, Yueping
作者机构：
[Yang, Shijiao; Huang, Qiusheng; Yang, Yueping] Univ S China, Sch Nucl Resources & Nucl Fuel Engineeri, Hengyang 421001, Peoples R China.
通讯机构：
[Yang, Yueping] U;Univ S China, Sch Nucl Resources & Nucl Fuel Engineeri, Hengyang 421001, Peoples R China.
会议名称：
1st International Conference on Energy and Environmental Protection (ICEEP 2012)
会议时间：
JUN 23-24, 2012
会议地点：
Hohhot, PEOPLES R CHINA
会议主办单位：
[Yang, Yueping;Yang, Shijiao;Huang, Qiusheng] Univ S China, Sch Nucl Resources & Nucl Fuel Engineeri, Hengyang 421001, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Ecological mining;Ecological safety;Sustainable development
摘要：
Ecological safety problem from mining activities can not be ignored. Mining ecological security not only relates to ecological environment, also involves technology environment, political environment and cultural environment, etc. Through comprehensive analysis of situation and problems of mining ecological security, we can find Hengyang must go green mining road and must construct ecological mining from the environmental ecology, the political ecology and the cultural ecology, in order to realize mining sustainable development.
语种：
英文
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新疆某砂岩铀矿含矿层孔隙结构的分形特征
作者：
陈亮;谭凯旋;刘江;曾晟
期刊：
中山大学学报(自然科学版)(中英文) ,2012年51(6):139-144 ISSN：0529-6579
通讯作者：
Tan, K.
作者机构：
[陈亮] 南华大学矿业工程博士后流动站;[谭凯旋; 刘江; 曾晟] 南华大学核资源与核燃料工程学院
通讯机构：
School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, China
关键词：
孔隙结构;分形;砂岩铀矿;新疆
摘要：
以新疆某砂岩铀矿含矿层为研究对象,利用压汞实验数据,采用分形理论研究含矿层孔隙结构特征,并探讨其与渗透性的关系及成因。含矿层孔隙结构总体上具类似的分形特征和形成机理。孔隙结构表现出双分形特征,大孔隙结构的分维值明显大于小孔隙结构的分维值,表明大孔隙结构的复杂程度明显大于小孔隙结构的复杂程度。大孔隙结构的分维值可判定含矿层的渗透性,并且其高值指示渗透性低,而小孔隙结构的分维值不能判定含矿层的渗透性。流体对不同孔径孔隙结构的改造程度存在差异可能是导致本砂岩铀矿含矿层孔隙结构具双分形特征的一个重要因素。
语种：
中文
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Effect of a Complex Surfactant on In Situ Leaching of Low Permeable Sandstone Uranium Deposits
作者：
Tan, Kaixuan* ;Liu, Jiang;Huang, Yongxiang
期刊：
International Conference on Nuclear Engineering, Proceedings, ICONE ,2012年4(1):309-314
通讯作者：
Tan, Kaixuan
作者机构：
[Liu, Jiang; Tan, Kaixuan; Huang, Yongxiang] Univ South China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Tan, Kaixuan] U;Univ South China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
会议名称：
20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference (ICONE20-POWER2012)
会议时间：
JUL 30-AUG 03, 2012
会议地点：
Anaheim, CA
会议主办单位：
[Tan, Kaixuan;Liu, Jiang;Huang, Yongxiang] Univ South China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称：
Proceedings of the 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference
摘要：
The effect of a complex surfactant on in situ leaching of low permeable sandstone uranium deposits is discussed, based on an Agitation leaching and a column leaching experiments. The results of the Agitation leaching experiment show that adding different concentrations surfactant into leaching solutions increases significantly the leaching rate of uranium. For a surfactant concentration of 10 mg/l, the leaching rate of uranium reaches maximum 92.6%. The results of the column leaching experiment show that adding 10mg/L surfactant into leaching solutions increases the permeability coefficient of ore-bearing layer 28.8% and the leaching rate of uranium 58.0%, resulting in 85.79%. The results of kinetic analysis show that extraction of uranium is controlled by diffusion with apparent rate constant of 0.0023/d without adding surfactant and by surface chemical reaction with apparent rate constant of 0.0077/d with adding surfactant. Thus, for low permeable sandstone uranium deposit, the in situ leaching mining is of great potential if adding the complex surfactant into leaching solutions.
语种：
英文
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Test study of recycling remnant uranium ore resources by stope leaching technology
作者：
Huang, Wei* ;Chen, Liang;Xie, Yanshi;Wang, Zhengqing;Wang, Xiaobo
期刊：
Advanced Materials Research ,2012年524-527:765-768 ISSN：1022-6680
通讯作者：
Huang, Wei
作者机构：
[Chen, Liang; Huang, Wei; Xie, Yanshi; Wang, Xiaobo; Wang, Zhengqing] Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Huang, Wei] U;Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
会议名称：
International Conference on Energy and Environmental Protection (ICEEP)
会议时间：
2012-06-23
会议地点：
Hohhot, China
会议主办单位：
[Huang, Wei;Chen, Liang;Xie, Yanshi;Wang, Zhengqing;Wang, Xiaobo] Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称：
Natural Resources and Sustainable Development II. Part 1
关键词：
Extrusion blasting;Lixiviant distribution and leaching;Remnant ore;Stope leaching
摘要：
Large number of valuable Uranium resources has been transformed to remnant ore, due to mining conditions of the deposit can not be recycled in the process of development and utilization. Such as reservation pillar in conventional mining, low-grade and residual ore bodies, remote and lonely ore bodies and so on. In order to exploratory research relevant technical problems of remnant Uranium ore resources recycled by stope leaching technique, experimental study were carried out in a Uranium mine. According to the remnant ore body occurrence conditions and make full use of the original sinking and driving engineering, adopting special stacking by blasting methods and reasonable lixiviant distribution and lixivium collecting technology, the remnant uranium ore resources recycling technology problems were solved by a small project investment. After 10 months of solution leaching, leaching of metal 5.18t, leaching rate up to 65.57%, the tons of metal cost for its existing mining cost 2/3. The stope leaching technology in remnant ore resource recycling is more perfect, expand the scope of application of the technology. ©(2012) Trans Tech Publications.
语种：
英文
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A core-shell structured nanocomposite material for detection, adsorption and removal of Hg(II) ions in water
作者：
Li, Le;Tang, Shuangyang;Ding, Dexin* ;Hu, Nan;Yang, Shengyuan;...
期刊：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY ,2012年12(11):8407-8414 ISSN：1533-4880
通讯作者：
Ding, Dexin
作者机构：
[Yang, Shengyuan; Tan, Yan; He, Shuya; Li, Le] Univ S China, Sch Publ Hlth, Hengyang 421001, Peoples R China.;[Tang, Shuangyang] Univ S China, Coll Med, Hengyang 421001, Peoples R China.;[Ding, Dexin; Li, Le; Hu, Nan; Sun, Jing; Wang, Yongdong] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Yang, Shengyuan] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Ding, Dexin] U;Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
关键词：
Fe_3O_4 Nanoparticles;Pyrene;Detection;Adsorption;Removal;Hg(II)
摘要：
In this paper, a core-shell structured nanocomposite material was prepared for the detection, adsorption and removal of Hg(II) ions in aqueous solution. The core was made from Fe<inf>3</inf>O<inf>4</inf> nanoparticles with superparamagnetic behavior and the outer shell was made from amorphous silica modified with pyrene-based sensing-probes. The material could detect and adsorb Hg(II) ions in aqueous solution due to its surface being modified with pyrene-based sensing-probes, and could easily be removed from the solution by magnetic force because of its core being made from magnetic Fe<inf>3</inf>O <inf>4</inf> nanoparticles. This multifunctional core-shell structure was confirmed and characterized by TEM, IR spectra, TGA, XRD and N<inf>2</inf> adsorption/desorption isotherms. Experiments were conducted on its functions of detection, adsorption and removal of Hg(II) ions in aqueous solution. The experimental results showed that this composite material had high sensitivity and unique selectivity to Hg(II), and that it could easily be removed from the solution. Copyright ©2012 American Scientific Publishers.
语种：
英文
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Ore drawing rules produced by poly-drawpoints based on kinematic model
作者：
陶干强;任青云;马娇阳
期刊：
煤炭学报 ,2012年37(3):407-410 ISSN：0253-9993
通讯作者：
Tao, G.-Q.(nhutgq@126.com)
作者机构：
[陶干强; 任青云] School of Nuclear Resource and Nuclear Fuel Engineering, University of South China, Hengyang 421001, China;[马娇阳] College of Resource and Civil Engineering, Northeast University, Shenyang 110004, China
通讯机构：
School of Nuclear Resource and Nuclear Fuel Engineering, University of South China, China
关键词：
运动学模型;多漏口放矿;放矿理论;放矿口;放出体方程
摘要：
介绍了放矿运动学模型的基本原理。分析了根据运动学模型得出的放出体与实际放出体不相符的原因,并指出了放矿运动学模型的使用范围。改进了散体空位扩散系数DP的取值方法,并推导了二维和三维问题的速度场方程、颗粒移动迹线方程以及放出体方程等。在此基础上,建立了描述多漏口放矿时的矿岩移动规律的数学方程。根据该理论可确定多漏口放矿时的松散矿岩移动迹线,放出体以及矿石残留体形态,可为崩落法采场设计、采场结构参数优化等提供理论参考。
语种：
中文
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露天矿山技术经济参数系统免疫粒子群优化研究
作者：
黄春生;戴剑勇;杨仕教
期刊：
南华大学学报(自然科学版) ,2012年26(4):31-35 ISSN：1673-0062
作者机构：
[黄春生] 西部矿业股份有限公司;南华大学核资源工程学院;[戴剑勇; 杨仕教] 南华大学
关键词：
自适应模糊推理系统(ANFIS);免疫粒子群优化;技术经济参数;露天矿山
摘要：
根据露天矿山生产工艺特点,运用自适应模糊推理系统技术建立矿山技术经济参数集成系统模型,应用融合免疫算法、粒子群优化算法的优良性能的免疫粒子群算法优化系统模型参数,并以水泥原料矿山为例,成功实现了露天矿山生产工艺技术经济参数的在线优化问题,为矿山企业数字管理提供了重要参考价值.
语种：
中文
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核特色矿物资源工程毕业设计（论文）的形式与教学
作者：
曾晟;孙冰;喻清
期刊：
华北理工大学学报(社会科学版) ,2012年12(4):163-165,172 ISSN：2095-2708
作者机构：
南华大学核资源与核燃料工程学院,湖南衡阳,421001;[喻清; 孙冰; 曾晟] 南华大学
会议名称：
第26届全国高校采矿工程专业学术年会
会议时间：
2012-08-20
会议地点：
北戴河
会议论文集名称：
第26届全国高校采矿工程专业学术年会论文集
关键词：
毕业设计(论文);矿物资源工程;形式与教学经验;核特色
摘要：
毕业设计（论文）是本科教学的最后一个实践教学环节,是实现本科人才培养目标的重要阶段,也是培养学生综合应用所学知识进行实践的重要环节。结合我校矿物资源工程专业的特色,积极探索了本专业毕业设计（论文）的多样化形式,同时阐述了我系矿物资源工程专业毕业设计（论文）实践教学中的教学经验。
语种：
中文
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矿物资源工程专业“岩体力学”课程教学
作者：
喻清;曾晟;杨月平;张志军
期刊：
华北理工大学学报(社会科学版) ,2012年12(4):122-124 ISSN：2095-2708
作者机构：
南华大学核资源与核燃料工程学院,湖南衡阳,421001;[杨月平; 喻清; 曾晟; 张志军] 南华大学
会议名称：
第26届全国高校采矿工程专业学术年会
会议时间：
2012-08-20
会议地点：
北戴河
会议论文集名称：
第26届全国高校采矿工程专业学术年会论文集
关键词：
岩体力学;铀矿开采;教学改革
摘要：
课程教学与实践改革是促进教师专业化成长的一个平台,是提升学生综合素质的有效途径。以南华大学核特色矿物资源工程专业＂岩体力学＂课程教学为例,从教材选择与教学安排、教学方法与教学手段、实践教学内容与安排等几个方面作了详细的介绍,为国内高校岩石力学教学提供了有益的参考。
语种：
中文
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Evaluation of the toxic effect on zebrafish (Danio rerio) exposed to uranium mill tailings leaching solution
作者：
Geng, Fang;Hu, Nan;Zheng, Ji-Fang* ;Wang, Cheng-Lei;Chen, Xin;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2012年292(1):453-463 ISSN：0236-5731
通讯作者：
Zheng, Ji-Fang
作者机构：
[Chen, Xin; Geng, Fang; Zheng, Ji-Fang; Hu, Nan; Wang, Cheng-Lei; Ding, De-Xin; Yu, Jia] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Zheng, Ji-Fang] U;Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.
关键词：
Antioxidant enzyme;MDA;Na + -K + -ATPase;Uranium mill tailings leaching solution;Zebrafish
摘要：
The objective of this study was to evaluate the potential ecological danger and toxic effect of uranium mill tailings leaching solution (UMTLS) on aquatic animals. UMTLS was identified to contain two radioactive elements, nine heavy metal elements, and five non-metallic materials. The acute toxicity test indicated that the 1, 12, 24, 48, 72, 96 h LC 50 values of UMTLS to the zebrafish were 12.1, 7.1, 4.4, 3.8, 3.4, and 2.9%, respectively. In sub-lethal toxicity tests, superoxide dismutase, catalase, Na + -K + -ATPase activities, and malondialdehyde content were respectively determined and analyzed in the zebrafish gill, gonad, muscle, and liver after exposed to four different concentration levels of UMTLS for 7 and 14 days, respectively. The result showed that the most sensitivity of the antioxidant system in zebrafish tissues in UMTLS was gill, and then decreased in gonad, muscle and liver respectively. Na + -K + -ATPase activity in the liver and gonad may be considered as a reference biomarker of UMTLS stress. The data in this study may be valuable that the toxicity of such as the leaching solution of potentially hazardous material was compared with that of each constituent. © 2011 Akadémiai Kiadó.
语种：
英文
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High and steep slope stability analysis induced by goaf based on 3D fast lagrangian analysis of continua
作者：
Yu, Qing* ;Zeng, Sheng;Zhang, Zhijun;Sun, Bing
期刊：
Advanced Materials Research ,2012年524-527:306-309 ISSN：1022-6680
通讯作者：
Yu, Qing
作者机构：
[Yu, Qing; Zeng, Sheng] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Zhang, Zhijun; Sun, Bing] Univ S China, Sch Nucl resources & Nucl fuel Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Yu, Qing] U;Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
会议名称：
International Conference on Energy and Environmental Protection (ICEEP)
会议时间：
2012-06-23
会议地点：
Hohhot, China
会议主办单位：
[Yu, Qing;Zeng, Sheng] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.^[Zhang, Zhijun;Sun, Bing] Univ S China, Sch Nucl resources & Nucl fuel Engn, Hengyang 421001, Peoples R China.
会议论文集名称：
Natural Resources and Sustainable Development II. Part 1
关键词：
Goaf;Slope Stability;Three-Dimensional Finite Differential Method
摘要：
Contraposing a lead-zinc ore in yunnan province, Adopting FLAC<sup>3D</sup> which is a three-dimensional finite differential method to analyse the slope stability induced by goaf, The results indicated: the movement of surrounding rock had been being more intense, meanwhile the slope was instability, It might cause collapse and land slide of slope rock if no using filling method to treat timely. The size of plastic zone in slope rock reduced greatly after filling the goaf, that greatly improved slope stability. Results of simulation were in line with practical producing, validating that FLAC<sup>3D</sup> was an effective way of slope stability analysis induced by goaf. ©(2012) Trans Tech Publications.
语种：
英文
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土壤胶体对渗滤液中铀(Ⅵ)迁移影响的研究进展
作者：
曹存存;吕俊文;夏良树;陈伟
期刊：
核化学与放射化学 ,2012年34(1):1-7 ISSN：0253-9950
通讯作者：
Xia, L.-S.
作者机构：
[曹存存; 陈伟] 南华大学化学化工学院;[吕俊文] 南华大学环境保护与安全工程学院;[夏良树] 南华大学核资源与核燃料工程学院
通讯机构：
School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, China
关键词：
土壤胶体;铀;重金属;迁移
摘要：
铀废石渗滤液中铀(Ⅵ)进入土壤后极易通过食物链对人类及周围环境产生危害。在已有研究基础上,简述了土壤胶体的来源和分类及其与铀(Ⅵ)的相互作用,重点讨论了土壤胶体结构、铀离子形态、土壤Eh-pH值、离子强度和有机质对溶液中铀(Ⅵ)的阻滞迁移影响,介绍了近年来土壤胶体在吸附溶液中铀(Ⅵ)的应用进展,提出了铀废石渗滤液中铀(Ⅵ)对环境的长期影响可能取得突破的几条途径。
语种：
中文
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Removal and recovery of uranium from aqueous solution by tea waste
作者：
Ding, De-Xin* ;Liu, Xi-Tao;Hu, Nan;Li, Guang-Yue;Wang, Yong-Dong
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2012年293(3):735-741 ISSN：0236-5731
通讯作者：
Ding, De-Xin
作者机构：
[Li, Guang-Yue; Hu, Nan; Liu, Xi-Tao; Ding, De-Xin; Wang, Yong-Dong] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Liu, Xi-Tao] Shandong Gold Grp, Jiaojia Gold Mine, Laizhou 264000, Peoples R China.
通讯机构：
[Ding, De-Xin] U;Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
关键词：
Tea waste;Uranium;Radioactive wastewater;Adsorption;Desorption;Kinetic;Adsorption isotherm
摘要：
Experiments on the removal and recovery of U(VI) from aqueous solution by tea waste were conducted. The adsorbent was characterized by scanning electron microscope and energy dispersive spectrometer before and after the adsorption treatment. The removal of U(VI) amounts to 86.80 % at optimum pH 6. The adsorption process reaches its equilibrium in 12 h at 308 K, and the kinetic characteristic can be described by the pseudo-second-order kinetic equation. The amount of adsorption increases from 22.92 to 142.21 mg g−1 with the decrease of tea waste dosage from 100 to 10 mg for solution with an initial uranium concentration of 50 mg L−1. Desorption for the four strippants is higher than 80 %. The equilibrium data are more agreeable with Freundlich isotherm than Langmuir isotherm.
语种：
英文
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The influence of fractal size distribution of covers on radon exhalation from uranium mill tailings
作者：
Tan, Kaixuan* ;Liu, Zehua;Xia, Liangshu;Lv, Junwen;Hu, Hanqiao
期刊：
Radiation Measurements ,2012年47(2):163-167 ISSN：1350-4487
通讯作者：
Tan, Kaixuan
作者机构：
[Liu, Zehua; Lv, Junwen; Tan, Kaixuan; Xia, Liangshu; Hu, Hanqiao] Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Tan, Kaixuan] U;Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Fractal;Size distribution;Covers;Radon exhalation rate;Uranium mill tailings
摘要：
Tailings produced during mining and milling of uranium ores represent potentially large volumes of low level radioactive materials. A typical environmental problem associated with mill tailings is radon emanation. Covering tailings is widely applied to reduce radon exhalation rate. In this paper, the fractal theories and field covering tests are used to study the fractal characters of size distribution of six types of covering materials, including waste rock, sand, laterite, kaolin, mixture of sand and laterite, and mixture of waste rock and laterite, and their influences on radon exhalation. The size distributions of uranium tailings and the six aforementioned covering materials all exhibit a good fractal structure. The contents of fine grain increase with the increasing value of fractal dimension. The results of field radon measurement show that the radon emanation rate of tailings without covers is 14.7-18.6 Bq/m<sup>2</sup> s. Covering tests were carried out of the six abovementioned covering materials with thickness of 0.4 m, 0.8 m, 1.2 m, 1.6 m and 2.0 m. The results indicate that the application of these materials for cover layers can decrease the radon exhalation rate markedly. The effectiveness of a cover layer in reducing radon exhalation is related to its fractal texture of size distribution. Under the same thickness conditions, the attenuation coefficient of radon exhalation rate increases with the increasing fractal dimension of size distribution of covers. The empirical expressions of the attenuation coefficients in relation to fractal dimension D of size distribution and thickness x of covers is obtained for evaluating the effectiveness of final covers for uranium tailings impoundments. ©2011 Elsevier Ltd. All rights reserved.
语种：
英文
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烷基醇酰胺聚甘油醚的合成及性能
作者：
王英;夏良树;夏岳韬;曹存存
期刊：
化学工程 ,2012年40(4):49-52+61 ISSN：1005-9954
通讯作者：
Xia, L.-S.
作者机构：
南华大学化学化工学院,湖南衡阳,421001;南华大学核资源与核燃料工程学院,湖南衡阳,421001;[王英; 夏岳韬; 曹存存; 夏良树] 南华大学
通讯机构：
School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, China
关键词：
烷基醇酰胺;聚合甘油醚;合成;性能
摘要：
以长链烷基醇酰胺、聚甘油为主要原料合成了3种非离子表面活性剂十二烷基酰胺聚甘油醚、十六烷基酰胺聚甘油醚和硬脂酸酰胺聚甘油醚,通过红外光谱对所合成产物进行了表征,并对产物表面化学性能进行了研究。结果表明:在十二烷基单乙醇酰胺与中间产物摩尔比1∶1,反应温度110℃,反应2.0 h,氢氧化钠用量为2.0%条件下,产物的最高收率87.1%;产品通过红外光谱表征表明结构正确;同一亲水链长下,随着烷基链的增长,增溶性逐渐增强,乳化能力和钙皂分散性能呈现先增加后降低的趋势;同一疏水链下,随着甘油平均聚合度的增加,起泡性、乳化力、钙皂分散性和增溶性均增强。
语种：
中文
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