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| 1 | Controlled Nanocutting of Graphene显示文摘Rapid progress in graphene-based applications is calling for new processing techniques for creating graphene components with different shapes,sizes,and edge structures.Here we report a controlled cutting process for graphene sheets,using nickel nanoparticles as a knife that cuts with nanoscale precision.The cutting proceeds via catalytic hydrogenation of the graphene lattice,and can generate graphene pieces with specifi c zigzag or armchair edges.The size of the nanoparticle dictates the edge structure that is produced during the cutting.The cutting occurs along straight lines and along symmetry lines,defined by angles of 60ºor 120º,and is defl ected at free edges or defects,allowing practical control of graphene nano-engineering. | Lijie Ci Zhiping Xu Lili Wang Wei Gao Feng Ding Kevin F.Kelly Boris I.Yakobson Pulickel M.Ajayan | 2008 | Nano Research2008，1，2： | 11 |
| 2 | Geographic variation in growth and phenology of two dominant central US grasses:consequences for climate change显示文摘Aims The rate of climate change may exceed many plant species’migration rates,particularly for long-lived perennial species that dominate most ecosystems.If bioclimatic envelopes shift more rapidly than dominant species can migrate,individuals located peripheral to biomes or in adjacent biomes may become a significant source of traits for future dominant populations(DPs).Thus,traits of individuals from peripheral populations(PPs)may affect future ecosystem functioning more than those of today’s DPs.Methods We assessed key traits of individuals collected from populations that currently dominate two central US grasslands,the shortgrass steppe(Bouteloua gracilis)and the tallgrass prairie(Andropogon gerardii).We compared these to individuals from PPs in a reciprocal-transplant common garden experiment with gardens at the Shortgrass Steppe Long Term Ecological Research site in Colorado and the Konza Prairie Biological Station Long Term Ecological Research site in Kansas.DPs and PPs were subjected to high and reduced water availability in common gardens located in each biome.Traits measured included the following:individual plant biomass,reproductive allocation,specific leaf area(SLA)and plant–water relations.We focused on the climate-change relevant comparisons of traits from PPs versus DPs expressed under the climate of DPs.Important Findings PPs of B.gracilis differed from DPs primarily in phenological traits.Under a semiarid shortgrass steppe climate,PPs initiated flowering later in the season,produced fewer reproductive tillers and were more sensitive to water stress.Biomass differences between populations were minimal.For A.gerardii,biomass in PPs was 50%lower than in DPs under the mesic tallgrass prairie climate and reproductive tillers were considerably smaller,despite higher SLA in PPs.Biomass of PPs was less sensitive to water stress,however.From these results,we conclude that key traits of PPs differed from DPs in both grassland types,but potential effects on reproductive phenology were greater for the bioclimatic shift in which a mesic biome becomes arid,whereas aboveground productivity may be affected more when a semiarid biome becomes more mesic. | Amanda L.Giuliani Eugene F.Kelly Alan K.Knapp | 2014 | Journal of Plant Ecology2014，7，3： | 3 |
| 3 | 字符对比度测量技术显示文摘高亮度显示器对黑色字符的显示对比度很难做到精确的测定,文中介绍了几种解决这一问题的方案。 | Edward F.Kelly 张晓晋 | 2009 | 现代显示2009，，10： | 1 |
| 4 | Chains and networks, territories and scales: towards a relational framework for analysing the global economy显示文摘 | PeterDicken Philip F.Kelly KrisOlds HenryWai‐Chung Yeung | 2002 | Global Networks2002，，2： | 1 |
| 5 | Chains and networks, territories and scales: towards a relational framework for analysing the global economy显示文摘 | PeterDicken Philip F.Kelly KrisOlds HenryWai‐Chung Yeung | 2002 | Global Networks2002，，2： | 1 |
| 6 | Interfacial Charge Transfer in Nanoscale Polymer Transistors显示文摘Interfacial charge transfer plays an essential role in establishing the relative alignment of the metal Fermi level and the energy bands of organic semiconductors.While the details remain elusive in many systems,this charge transfer has been inferred in a number of photoemission experiments.We present electronic transport measurements in very short channel(L<100 nm)transistors made from poly(3-hexylthiophene)(P3HT).As channel length is reduced,the evolution of the contact resistance and the zero gate voltage conductance are consistent with such charge transfer.Short channel conduction in devices with Pt contacts is greatly enhanced compared to analogous devices with Au contacts,consistent with charge transfer expectations.Alternating current scanning tunneling microscopy(ACSTM)provides further evidence that holes are transferred from Pt into P3HT,while much less charge transfer takes place at the Au/P3HT interface. | Jeffrey H.Worne Rajiv Giridharagopal Kevin F.Kelly Douglas Natelson | 2008 | Nano Research2008，1，4： | 0 |
| 7 | Exploring novel candidate genes from the Mouse Genome Informatics database: Potential implications for avian migration research显示文摘To search for genes associated with migratory phenotypes in songbirds,we selected candidate genes through annotations from the Mouse Genome Informatics database and assembled an extensive candidate-gene library.Then,we implemented a next-generation sequencing approach to obtain DNA sequences from the Painted Bunting genome.We focused on those sequences that were conserved across avian species and that aligned with candidate genes in our mouse library.We genotyped short sequence repeats from the following candidate genes:ADRA1d,ANKRD17,CISH and MYH7.We studied the possible correlations between allelic variations occurring in these novel candidate migration genes and avian migratory phenotypes available from the published literature.We found that allele variation at MYH7 correlated with a calculated index of speed of migration(km/day)across 11 species of songbirds.We highlight the potential of the Mouse Genome Informatics database in providing new candidate genes that might play a crucial role in regulating migration in birds and possibly in other taxa.Our research effort shows the benefits and limitations of working with extensive genomic datasets and offers a snapshot of the challenges related to cross-species validation in behavioral and molecular ecology studies. | Andrea CONTINA Eli S.BRIDGE Jeffrey F.KELLY | 2016 | Integrative Zoology2016，11，4： | 0 |
| 8 | 一种鉴别植被和气候变化的定量方法——植物岩中的稳定碳同位素比率显示文摘大平原北部的蛋白石植物岩(Opal Phytoliths)中封存碳的^(13)C/^(12)C比值可作为重建古气候的依据。宿主植物的碳同位素组成与植物岩中有机质的碳同位素组成之间存在着明显的相关关系。沿气候梯度土壤表层分布的植物岩的^(13)C/^(12)C此值反映了当前植被中C_3和C_4植物的比例。土壤中植物岩的δ^(13)C值随土壤深度的变化而变化,而这种变化是由多种作用引起的:尘土对土壤表面的埋藏作用、生物扰动和可能由于雨水的渗透而引起的淋滤作用。此外,尘土和植物根系对植物岩的贡献是否有同位素效应还不清楚。土壤中植物岩的δ^(13)C值随^(14)C年龄的减小而增加,表明全新世期间,本区C_4植物的比例增大。视年龄为全新世中期的植物岩主要以C_4植物独占优势,这一事实与干旱的中全新世古气候解释相吻合。 | Eugene F.Kelly 刘俊峰 苏英 | 1993 | 地质地球化学1993，，5： | 0 |
| 9 | 显示器在太阳光或白天光线反射下的可读性显示文摘在显示行业中,人们大多把阳光下的可读性作为衡量显示器质量的一个主要参数,但实际上,'白天光线'下的可读性对表征当今显示器的性能更为重要,因为'白天光线'不仅仅包括阳光,还包括周围环境的自然光、多云天的光、海滩光和油漆墙面反射光等等。 | Edward F.Kelly 周斌峰 | 2007 | 现代显示2007，，12： | 0 |
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