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| 1 | 高锂无烟煤中不同赋存态锂同位素组成趋同特征及其机理显示文摘煤和含煤岩系中Li是全球Li资源潜在来源之一,引起了国内外高度重视。沁水盆地局部地区煤中Li异常富集,探讨其同位素组成特点与演化有助于深化锂富集分配机制认识。以盆地北部阳泉矿区新景矿8号无烟煤层为研究对象,利用电感耦合等离子体质谱仪(ICP-MS)和X射线衍射仪(XRD)测定Li质量分数和矿物组成,结合逐级化学提取试验,确定煤中Li的赋存状态。利用多接收器电感耦合等离子体质谱仪(MC-ICP-MS),测试煤样和不同赋存状态Li的同位素组成,探讨了煤化作用过程中Li同位素分馏特征。结果表明:煤样Li平均质量分数达138.04μg/g,高于世界硬煤中的平均质量分数(14μg/g);主要载体为高岭石,有少量Li以有机结合态的形式存在;原煤样中δ7Li的均值为-2.13‰,硅酸盐结合态δ7Li的均值为-1.15‰,有机结合态δ7Li均值为-1.53‰,不同赋存状态Li同位素组成相似。研究认为,无烟煤中Li同位素组成趋同机理为:①煤化作用过程中轻的6Li从有机结构中脱除,再次吸附到黏土矿物中,导致煤中有机结合态Li同位素组成变重,硅酸盐结合态Li同位素组成变轻;②在水-岩反应过程中,硅酸盐矿物中重的7Li很容易被溶液萃取,导致硅酸盐结合态中重的7Li流失,Li同位素组成变轻;③煤化作用升温过程有助于Li元素的扩散,促使Li同位素达到动力学分馏平衡。 | 孙蓓蕾 孔艳磊 王国权 刘超 IKEH Justin Tobechukwu | 2022 | 煤炭学报2022，47，5： | 2 |
| 2 | Rapid in vivo assessment of drug efficacy against Mycobacterium tuberculosis using an improved firefly luciferase显示文摘 | Nuria Andreu Andrea Zelmer Samantha L. Sampson Melanie Ikeh Gregory J. Bancroft Ulrich E. Schaible Siouxsie Wiles Brian D. Robertson | 2013 | Journal of Antimicrobial Chemotherapy2013，，9： | 1 |
| 3 | Growth and distribution of maize roots under nitrogen fertilization in plinthite soil显示文摘 | IKEH S O Kling J G Horst W J | 1999 | Field Crops Research1999，62，： | 1 |
| 4 | Growth and distribution of maize roots under nitrogen fertilization in inthite soil显示文摘 | ikeh S O Kling J G Horst W J | 1999 | Field Crops Research1999，62，： | 1 |
| 5 | Screening for intestinal parasites in elective surgery patients in endemic areas: how relevant is it? 显示文摘 | IKEH E I OBE E KIDMAS A T | 2011 | Labmedicine2011，42，8： | 1 |
| 6 | Comparison of the opti- mal rapid test and microscopy for detection of malaria in pregnant women in Nigeria显示文摘 | VanderJagt TA Ikeh EI Ujah IO | 2005 | Trop Med Int Health2005，10，1： | 1 |
| 7 | 尼日利亚的固定性药疹显示文摘Fixed drug eruption (FDE) causes cosmetic embarrassment in Nigerian patients, particularly when the characteristic hyperpigmented patches affect the face and lips. Drugs that have been implicated in the etiology of FDE, and the sites of lesions, may vary from country to country. Antimalarials, such as Fansidar, Fancimef, Maloxine, Amalar, and Metakelfin, were the most common offending agents, accounting for 38%of FDEs, followed by trimethoprim +sulfamethoxazole (co-trimoxazole) (28%), dipyrones (10%), Butazolidin (6%)-, thiacetazone (6%), metronidazole (4%), paracetamol (3%), and naproxen (3%). Lesions induced by the combination of sulfadoxine and pyrimethamine (in antimalarials) mainly involved the face and lips. In most cases, patients took these sulfa-containing antimalarials in combination with numerous other drugs, particularly analgesics. Unlike chloroquine-induced pruritus, which affects most Africans, the association between antimalarials and FDE has not been well documented in our region. Co-trimoxazole was associated more often than antimalarials with FDEs involving the mucocutaneous junctions of the genitalia and lips. Males with genital lesions on the glans penis represented 11 (48%) of those with co-trimoxazole hypersensitivity. The trunk and limbs were affected mainly by pyrazoles and Butazolidin, respectively; however, solitary lesions on the trunk were usually due to co-trimoxazole, whereas solitary lesions on the limbs were associated with Butazolidin. | Nnoruka E.N Ikeh V.O. Mbah A.U. 周炳荣 | 2006 | 世界核心医学期刊文摘(皮肤病学分册)2006，，12： | 0 |
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