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| 1 | Isolation of Single-Walled Carbon Nanotube Enantiomers by Density Differentiation显示文摘Current methods of synthesizing single-walled carbon nanotubes(SWNTs)result in racemic mixtures that have impeded the study of left-and right-handed SWNTs.Here we present a method of isolating different SWNT enantiomers using density gradient ultracentrifugation.Enantiomer separation is enabled by the chiral surfactant sodium cholate,which discriminates between left-and right-handed SWNTs and thus induces subtle differences in their buoyant densities.This sorting strategy can be employed for simultaneous enrichment by handedness and roll-up vector of SWNTs having diameters ranging from 0.7 to 1.5 nm.In addition,circular dichroism of enantiomer refined samples enables identification of high-energy optical transitions in SWNTs. | Alexander A.Green Matthew C.Duch Mark C.Hersam | 2009 | Nano Research2009，2，1： | 7 |
| 2 | 梅花拳的复兴与华北乡村的群体认同显示文摘自明末至今,山东、河南及河北交界地带的梅花拳从数个朝代的更替和社会运动中存留下来,并在当下城镇化背景中得以复兴。其动力在于它整合了多种民俗文化要素,满足了不同人群的社会交往和精神生活需求,弥补了因城镇化的极速发展而带来的乡村社会民众认同感的缺失。 | 张国栋 李运 | 2016 | 民俗研究2016，，5： | 5 |
| 3 | 砂土震陷分析中多维地震荷载等效循环周数计算显示文摘借助有限元数值方法模拟不同砂土试样在多向和单向地震荷载输入条件下的动三轴试验,选取覆盖大震、中震、近场、远场及不同土质条件的155组多向地震输入时程对不同砂土试样分别进行单向和多向加载,建立考虑多向地震荷载作用的等效循环周数计算方法,并研究震级、震中距和砂土特性对等效循环周数比的影响。研究表明,震级和震中距对等效循环周数比影响不明显,砂土特性对等效循环周数比的影响具有主导作用,砂土相对密度为45%、60%、80%和100%时,其对应的等效循环周数比均值分别为1.58、1.75、1.93和2.08,相对密度越大,比值越大,结合该比值,可以较好地应用文中提出方法进行多维地震荷载等效循环周数计算。 | 陈青生 高广运 Russell A.Green 张蕾 | 2010 | 世界地震工程2010，26，S1： | 5 |
| 4 | Anthropometrics and electromyography as predictors for maximal voluntary isometric arm strength显示文摘Background:Muscular strength can be conceptually determined by two components:muscle activation and size.Muscle activation by the central nervous system can be measured by surface electromyography(sEMG).Muscular size reflects the amount of contractile protein within a skeletal muscle and can be estimated by anthropometric measurements.The purpose of this study was to determine the relative contributions of size parameters and muscle activation to the prediction of maximal voluntary isometric elbow flexion strength. Methods:A series of anthropometric measurements were taken from 96 participants.Torque and root-mean-square(RMS) of the sEMG from the biceps brachii were averaged across three maximal voluntary isometric contractions.A multiple linear regression analysis was performed based on a Pearson’s correlation matrix. Results:Body weight(BW) accounted for 39.1% and 27.3% in males and females,respectively,and was the strongest predictor of strength for males.Forearm length(L3) was the strongest predictor of strength in females(partial R^2 = 0.391).Elbow circumference(ELB) accounted for a significant(p < 0.05) amount of variance in males but not females.The addition of sEMG RMS as a third variable accounted for an average of 10.1% of the variance excluding the equation of BW and L3 in females.The strongest prediction equation included BW,L3,and ELB accounting for 55.6% and 58.5% of the variance in males and females,respectively. Conclusion:Anthropometrics provide a strong prediction equation for the estimation of isometric elbow flexion strength.Muscle activation,as measured by sEMG activity,accounted for a significant(p < 0.05) amount of variance in most prediction equations,however,its contribution was comparable to an additional anthropometric variable. | Lara A.Green David A.Gabriel | 2012 | Journal of Sport and Health Science2012，1，2： | 2 |
| 5 | Solar cell efficiency tables (version 28)显示文摘 | Martin A.Green KeithEmery David L.King YoshihiroHishikawa WilhelmWarta | 2006 | Prog Photovolt: Res Appl2006，，5： | 1 |
| 6 | Third generation photovoltaics: Ultra‐high conversion efficiency at low cost显示文摘 | Martin A.Green | 2001 | Prog. Photovolt: Res. Appl2001，，： | 1 |
| 7 | Demographics and recent productivity performance: insights from cross‐country comparisons显示文摘 | PaulBeaudry FabriceCollard David A.Green | 2005 | Canadian Journal of Economics/Revue canadienne d’économique2005，，2： | 1 |
| 8 | Consolidation of thin‐film photovoltaic technology: the coming decade of opportunity显示文摘 | Martin A.Green | 2006 | Prog Photovolt: Res Appl2006，，5： | 1 |
| 9 | Solar cell efficiency tables (version 28)显示文摘 | Martin A.Green KeithEmery David L.King YoshihiroHishikawa WilhelmWarta | 2006 | Prog. Photovolt: Res. Appl2006，，5： | 1 |
| 10 | Modelling implications of recent silicon bandgap narrowing expressions显示文摘 | Martin A.Green | 1998 | Prog Photovolt: Res Appl1998，，4： | 1 |
| 11 | 水资源压力的地理空间指示器:在非洲的应用显示文摘本研究说明了如何将全球已有的地球系统数据集用于世界上信息缺乏的地区进行水资源评价。8km分辨率的地理空间分析表明:64%的非洲人口所依赖的水资源是有限的和非常不稳定的。在那些有河流的地方,河流廊道水流对于增加当地径流、减少气候波动的影响以及改善淡水获取条件都是非常关键的。农田在非洲最干旱的地区有很大比例,其中39%的灌溉无法持续。25%的人口面临着严重的水资源长期过度使用和水资源压力,另外13%的人口中每代人都会经历一次干旱造成的水资源压力。令人感到矛盾的是,对于绝大多数非洲人来说,水资源压力程度仍然很低,反映了较差的水资源基础设施与服务,以及较低的水资源利用水平。用水的适度增长可以降低对经济发展的制约,减少污染,以及降低对人类健康的挑战。开发一种明确的地理空间指示器,该指示器能综合集成生物地球物理、社会经济和工程设计等方面的信息,这将成为未来全球水资源评价中一个重要的步骤。 | Charles J.Vrsmarty Ellen M.Douglas Pamela A.Green Carmen Revenga 王纲胜 | 2005 | AMBIO-人类环境杂志2005，34，3： | 0 |
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