Now showing items 630-649 of 1955

    • Habitat use and resource tracking by African Ceratogymna hornbills: implications for seed dispersal and forest conservation 

      Smith, Thomas B.; Whitney, Kenneth D. (1998)
      Conservation of tropical forests requires an understanding of the seasonal patterns of abundance and distribution of important seed dispersers. In the forests of Central Africa, three species of hornbills in the genus ...
    • Handle Addition for Doubly-Periodic Scherk Surfaces 

      Weber, Matthias; Wolf, Michael (2012)
      We prove the existence of a family of embedded doubly periodic minimal surfaces of (quotient) genus g with orthogonal ends that generalizes the classical doubly periodic surface of Scherk and the genus-one Scherk surface ...
    • The Harang reversal and the interchange stability of the magnetotail 

      Ohtani, Shinichi; Gkioulidou, Matina; Wang, Chih-Ping; Wolf, Richard A. (2016)
      The present study addresses steady convection in the plasma sheet in terms of the interchange stability with special attention to the Harang reversal. The closure of the tail current with a field-aligned current (FAC) ...
    • Hard X-ray quiescent emission in magnetars via resonant Compton upscattering 

      Baring, M.G.; Wadiasingh, Z.; Gonthier, P.L.; Harding, A.K. (2017)
      Non-thermal quiescent X-ray emission extending between 10 keV and around 150 keV has been seen in about 10 magnetars by RXTE, INTEGRAL, Suzaku, NuSTAR and Fermi-GBM. For inner magnetospheric models of such hard X-ray ...
    • Hartree–Fock symmetry breaking around conical intersections 

      Jake, Lena C.; Henderson, Thomas M.; Scuseria, Gustavo E. (2018)
      We study the behavior of Hartree-Fock (HF) solutions in the vicinity of conical intersections. These are here understood as regions of a molecular potential energy surface characterized by degenerate or nearly degenerate ...
    • Heavy-fermion quantum criticality and destruction of the Kondo effect in a nickelᅠoxypnictide 

      Luo, Yongkang; Pourovskii, Leonid; Rowley, S.E.; Li, Yuke; Feng, Chunmu; Georges, Antoine; Dai, Jianhui; Cao, Guanghan; Xu, Zhuメan; Si, Qimiao; Ong, N.P. (2014)
      A quantum critical point arises at a continuous transformation between distinct phases of matter at zero temperature. Studies in antiferromagnetic heavy-fermion materials have revealed that quantum criticality has several ...
    • Helical Quantum Edge Gears in 2D Topological Insulators 

      Chou, Yang-Zhi; Levchenko, Alex; Foster, Matthew S. (2015)
      We show that two-terminal transport can measure the Luttinger liquid (LL) parameter K, in helical LLs at the edges of two-dimensional topological insulators (TIs) with Rashba spin-orbit coupling. We consider a Coulomb drag ...
    • Hemichordate genomes and deuterostome origins 

      Simakov, Oleg; Kawashima, Takeshi; Marlétaz, Ferdinand; Jenkins, Jerry; Koyanagi, Ryo; Mitros, Therese; Hisata, Kanako; Bredeson, Jessen; Shoguchi, Eiichi; Gyoja, Fuki; Yue, Jia-Xing; Chen, Yi-Chih; Freeman, Robert M.; Sasaki, Akane; Hikosaka-Katayama, Tomoe; Sato, Atsuko; Fujie, Manabu; Baughman, Kenneth W.; Levine, Judith; Gonzalez, Paul; Cameron, Christopher; Fritzenwanker, Jens H.; Pani, Ariel M.; Goto, Hiroki; Kanda, Miyuki; Arakaki, Nana; Yamasaki, Shinichi; Qu, Jiaxin; Cree, Andrew; Ding, Yan; Dinh, Huyen H.; Dugan, Shannon; Holder, Michael; Jhangiani, Shalini N.; Kovar, Christie L.; Lee, Sandra L.; Lewis, Lora R.; Morton, Donna; Nazareth, Lynne V.; Okwuonu, Geoffrey; Santibanez, Jireh; Chen, Rui; Richards, Stephen; Muzny, Donna M.; Gillis, Andrew; Peshkin, Leonid; Wu, Michael; Humphreys, Tom; Su, Yi-Hsien; Putnam, Nicholas H.; Schmutz, Jeremy; Fujiyama, Asao; Yu, Jr-Kai; Tagawa, Kunifumi; Worley, Kim C.; Gibbs, Richard A.; Kirschner, Marc W.; Lowe, Christopher J.; Satoh, Noriyuki; Rokhsar, Daniel S.; Gerhart, John (2015)
      Acorn worms, also known as enteropneust (literally, ‘gut-breathing’) hemichordates, are marine invertebrates that share features with echinoderms and chordates. Together, these three phyla comprise the deuterostomes. Here ...
    • Herbivore-induced changes in plant carbon allocation: Assessment of below-ground C fluxes using carbon-14 

      Crossley, D.A. Jr; Cheng, Weixin; Holland, J. Nathaniel (1996-03)
      Effects of above-ground herbivory on shortterm plant carbon allocation were studied using maize (Zea mays) and a generalist lubber grasshopper (Romalea guttata). We hypothesized that above-ground herbivory stimulates ...
    • Hierarchically Structured Magnetic Nanoconstructs with Enhanced Relaxivity and Cooperative Tumor Accumulation 

      Gizzatov, Ayrat; Key, Jaehong; Aryal, Santosh; Ananta, Jeyarama; Cervadoro, Antonio; Palange, Anna Lisa; Fasano, Matteo; Stigliano, Cinzia; Zhong, Meng; Di Mascolo, Daniele; Guven, Adem; Chiavazzo, Eliodoro; Asinari, Pietro; Liu, Xuewu; Ferrari, Mauro; Wilson, Lon J.; Decuzzi, Paolo (2014)
      Iron oxide nanoparticles are formidable multifunctional systems capable of contrast enhancement in magnetic resonance imaging, guidance under remote fields, heat generation, and biodegradation. Yet, this potential is ...
    • Hierarchy in gene expression is predictive of risk, progression, and outcome in adult acute myeloid leukemia 

      Tripathi, Shubham; Deem, Michael W. (2015)
      Cancer progresses with a change in the structure of the gene network in normal cells. We define a measure of organizational hierarchy in gene networks of affected cells in adult acute myeloid leukemia (AML) patients. With ...
    • Hierarchy of gene expression data is predictive of future breast cancer outcome 

      Chen, Man; Deem, Michael W. (2013)
      We calculate measures of hierarchy in gene and tissue networks of breast cancer patients. We find that the likelihood of metastasis in the future is correlated with increased values of network hierarchy for expression ...
    • High Chromaticity Aluminum Plasmonic Pixels for Active Liquid Crystal Displays 

      Olson, Jana; Manjavacas, Alejandro; Basu, Tiyash; Huang, Da; Schlather, Andrea E.; Zheng, Bob; Halas, Naomi; Nordlander, Peter; Link, Stephan (2016)
      Chromatic devices such as flat panel displays could, in principle, be substantially improved by incorporating aluminum plasmonic nanostructures instead of conventional chromophores that are susceptible to photobleaching. ...
    • High e+/e− Ratio Dense Pair Creation with 1021W.cm−2 Laser Irradiating Solid Targets 

      Liang, E.; Clarke, T.; Henderson, A.; Fu, W.; Lo, W.; Taylor, D.; Chaguine, P.; Zhou, S.; Hua, Y.; Cen, X.; Wang, X.; Kao, J.; Hasson, H.; Dyer, G.; Serratto, K.; Riley, N.; Donovan, M.; Ditmire, T. (2015)
      We report results of new pair creation experiments using ~100 Joule pulses of the Texas Petawatt Laser to irradiate solid gold and platinum targets, with intensities up to ~1.9 × 10(21) W.cm(-2) and pulse durations as short ...
    • High hardness in the biocompatible intermetallic compound β-Ti3Au 

      Svanidze, Eteri; Besara, Tiglet; Ozaydin, M. Fevsi; Tiwary, Chandra Sekhar; Wang, Jiakui K.; Radhakrishnan, Sruthi; Mani, Sendurai; Xin, Yan; Han, Ke; Liang, Hong; Siegrist, Theo; Ajayan, Pulickel M.; Morosan, E. (2016)
      The search for new hard materials is often challenging, but strongly motivated by the vast application potential such materials hold. Ti3Au exhibits high hardness values (about four times those of pure Ti and most steel ...
    • High ionic strength narrows the population of sites participating in protein ion-exchange adsorption: A single-molecule study 

      Kisley, Lydia; Chen, Jixin; Mansur, Andrea P.; Dominguez-Medina, Sergio; Kulla, Eliona; Kang, Marci; Shuang, Bo; Kourentzi, Katerina; Poongavanam, Mohan-Vivekanandan; Dhamane, Sagar; Willson, Richard C.; Landes, Christy F. (2014)
      The retention and elution of proteins in ion-exchange chromatography is routinely controlled by adjusting the mobile phase salt concentration. It has repeatedly been observed, as judged from adsorption isotherms, that the ...
    • High Performance Electrocatalytic Reaction of Hydrogen and Oxygen on Ruthenium Nanoclusters 

      Ye, Ruquan; Liu, Yuanyue; Peng, Zhiwei; Wang, Tuo; Jalilov, Almaz S.; Yakobson, Boris I.; Wei, Su-Huai; Tour, James M. (2017)
      The development of catalytic materials for the hydrogen oxidation, hydrogen evolution, oxygen reduction or oxygen evolution reactions with high reaction rates and low overpotentials are key goals for the development of ...
    • High Precision Fractionator for use with Density Gradient Ultracentrifugation 

      Kadria-Vili, Yara; Canning, Griffin; Bachilo, Sergei M.; Weisman, R. Bruce (2014)
      The recent application of density gradient ultracentrifugation (DGU) for structural sorting of single-walled carbon nanotube samples has created a need for highly selective extraction of closely spaced layers formed in the ...
    • High Pressure Phase Relations of a Depleted Peridotite Fluxed by CO2‐H2O‐Bearing Siliceous Melts and the Origin of Mid‐Lithospheric Discontinuity 

      Saha, Sriparna; Dasgupta, Rajdeep; Tsuno, Kyusei (2018)
      We present phase equilibria experiments on a depleted peridotite (Mg# 92) fluxed with variable proportions of a slab‐derived rhyolitic melt (with 9.4 wt.% H2O, 5 wt.% CO2), envisaging an interaction that could occur during ...
    • High-Ampacity Power Cables of Tightly-Packed and Aligned Carbon Nanotubes 

      Wang, Xuan; Behabtu, Natnael; Young, Colin C.; Tsentalovich, Dmitri E.; Pasquali, Matteo; Kono, Junichiro (2014)
      The current-carrying capacity (CCC), or ampacity, of highly-conductive, light, and strong carbon nanotube (CNT) fibers is characterized by measuring their failure current density (FCD) and continuous current rating (CCR) ...