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| 1 | 纳米SnSe_2空心球上乙酰胆碱酯酶的固定及辛硫磷传感器的构建显示文摘描述了一种将乙酰胆碱酯酶固定在SnSe2空心球上检测辛硫磷的简单方法,用水热法合成了SnSe2空心球,并用透射电镜对其表征.固定的乙酰胆碱酯酶能保持其生物学活性,催化乙酰胆碱为胆碱,胆碱被氧化产生可检测的信号.基于辛硫磷对乙酰胆碱酯酶活性有抑制作用这个机理,在理想条件下,这种传感器对辛硫磷检测的线性范围是0.008~56μg/mL,检测限为0.004μg/mL.这种新型的传感器有很好的稳定性和重现性.这项工作表明SnSe2空心球可以作为固定乙酰胆碱酯酶的理想载体并用于构建相应的传感器. | 张灿 张金星 王坤 戴志晖 | 2012 | 化学学报2012，70，8： | 3 |
| 2 | Biomass production and carbon balance in two hybrid poplar(Populus euramericana)plantations raised with and without agriculture in southern France显示文摘Poplar is useful in different climates for bioenergy production and carbon sequestration when planted as a single species or in agroforestry. Europe has large areas potentially suitable for poplar forestry and a bioenergy policy that would encourage poplar forestry. In this study I estimated biomass production and carbon sequestration in poplar monoculture plantation and poplar-wheat agroforestry, in the Mediterranean region of France. A single-tree harvesting method was used to estimate biomass and an empirical conversion factor was adopted to calculate sequestered carbon. Total biomass was higher in agroforestry trees(1223 kg tree^(-1)) than in monoculture plantation trees(1102 kg tree^(-1)).Aboveground and belowground biomass distributions were similar in both cases(89 and 88% aboveground, and 11 and12% belowground, respectively in agroforestry and monoculture). The partitioning of total biomass in an agroforestry tree in leaves, branch, and trunk(aboveground), and fine roots, medium roots, coarse roots and underground stem(belowground) was 1,22,and 77,and 6,9, 44 and 40%,respectively. Except for branch and trunk, all other compartments were similarly distributed in a monoculture tree.Storage of C was higher in agroforestry trees(612 kg tree^(-1))than in monoculture trees(512 kg tree^(-1)). In contrast, C storage on a per hectare basis was lower in agroforestry(85 Mg ha^(-1)) than in monoculture(105 Mg ha^(-1)) due to the lower density of trees per hectare in agroforestry(139 trees in agroforestry vs 204 trees in monoculture). On a per hectare basis, soil C stocks pattern were similar to per tree stocking:They were higher in agroforestry at 330 Mg ha^(-1) than in monoculture 304 Mg ha^(-1). Higher C accumulation by agroforestry has a direct management implication in the sense that expanding agroforestry into agriculture production areas with short rotation and fast growing trees like poplar would encourage quicker and greater C sequestration. This could simultaneously fulfil the requirement of bioenergy plantation in Europe. | Kaushalendra Kumar Jha | 2018 | Journal of Forestry Research2018，29，6： | 2 |
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