Now showing items 404-463 of 689

  • NAF-1 and mitoNEET are central to human breast cancer proliferation by maintaining mitochondrial homeostasis and promoting tumor growth 

    Sohn, Yang-Sung; Tamir, Sagi; Song, Luhua; Michaeli, Dorit; Matouk, Imad; Conlan, Andrea R.; Harir, Yael; Holt, Sarah H.; Shulaev, Vladimir; Paddock, Mark L.; Hochberg, Abraham; Cabanchick, Ioav Z.; Onuchic, José N.; Jennings, Patricia A.; Nechushtai, Rachel; Mittler, Ron (2013)
    Mitochondria are emerging as important players in the transformation process of cells, maintaining the biosynthetic and energetic capacities of cancer cells and serving as one of the primary sites of apoptosis and ...
  • Nanoparticles Heat through Light Localization 

    Hogan, Nathaniel J.; Urban, Alexander S.; Ayala-Orozco, Ciceron; Pimpinelli, Alberto; Nordlander, Peter; Halas, Naomi J. (2014)
    Aqueous solutions containing light-absorbing nanoparticles have recently been shown to produce steam at high efficiencies upon solar illumination, even when the temperature of the bulk fluid volume remains far below its ...
  • Negative scattering length of ultracold Li7 gas 

    Moerdijk, A.J.; Stwalley, W.C.; Hulet, R.G.; Verhaar, B.J. (1994)
    We have improved the theoretical triplet ground-state potential of Li27 by means of an inverse perturbation analysis, and find that the diatomic scattering length for Li7 atoms in the F=2, mF=2 ground-state hyperfine level ...
  • Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at √s=200  GeV 

    STAR Collaboration; Butterworth, J.; Eppley, G.; Geurts, F.; Llope, W.J.; McDonald, D.; Roberts, J.B.; Xin, K.; Yepes, P. (2014)
    The differential cross section and spin asymmetries for neutral pions produced within the intermediate pseudorapidity range 0.8<η<2.0 in polarized proton-proton collisions at √s=200  GeV are presented. Neutral pions were ...
  • A new social gene in Dictyostelium discoideum, chtB 

    Santorelli, Lorenzo A.; Kuspa, Adam; Shaulsky, Gad; Queller, David C.; Strassmann, Joan E. (2013)
    Background: Competitive social interactions are ubiquitous in nature, but their genetic basis is difficult to determine. Much can be learned from single gene knockouts in a eukaryote microbe. The mutants can be competed ...
  • A New Theoretical Approach to Analyze Complex Processes in Cytoskeleton Proteins 

    Li, Xin; Kolomeisky, Anatoly B. (2014)
    Cytoskeleton proteins are filament structures that support a large number of important biological processes. These dynamic biopolymers exist in non-equilibrium conditions stimulated by hydrolysis chemical reactions in their ...
  • Niche Differentiation in the Dynamics of Host-Symbiont Interactions: Symbiont Prevalence as a Coexistence Problem 

    Miller, Tom E.X.; Rudgers, Jennifer A. (2014-04)
    Heritable symbioses can have important ecological effects and have triggered important evolutionary innovations. Current predictions for long-term symbiont prevalence are based on their fitness benefits and vertical ...
  • Nitrogen, biochar, and mycorrhizae: Alteration of the symbiosis and oxidation of the char surface 

    LeCroy, Chase; Masiello, Caroline A.; Rudgers, Jennifer A.; Hockaday, William C.; Silberg, Jonathan J. (2014)
    In some cases amending soil with biochar improves fertility, although the exact mechanisms through which biochar alters soil processes are not well understood. In other cases, however, biochar amendment can have no effect ...
  • Non-Native Plant Litter Enhances Soil Carbon Dioxide Emissions in an Invaded Annual Grassland 

    Zhang, Ling; Wang, Hong; Zou, Jianwen; Rogers, William E.; Siemann, Evan (2014-03-19)
    Litter decomposition is a fundamental ecosystem process in which breakdown and decay of plant detritus releases carbon and nutrients. Invasive exotic plants may produce litter that differs from native plant litter in quality ...
  • Noncollinear density functional theory having proper invariance and local torque properties 

    Bulik, Ireneusz W.; Scalmani, Giovanni; Frisch, Michael J. (2013-01-11)
    Noncollinear spins are among the most interesting features of magnetic materials, and their accurate description is a central goal of density functional theory applied to periodic solids. However, these calculations typically ...
  • Numerical calculation of interaction forces between paramagnetic colloids in two-dimensional systems 

    Du, Di; Toffoletto, Frank; Biswal, Sibani Lisa (2014)
    Typically the force between paramagnetic particles in a uniform magnetic field is described using the dipolar model, which is inaccurate when particles are in close proximity to each other. Instead, the exact force between ...
  • Numerical modeling of collisional dynamics of Sr in an optical dipole trap 

    Yan, M.; Chakraborty, R.; Mazurenko, A.; Mickelson, P.G.; Martinez de Escobar, Y.N.; DeSalvo, B.J.; Killian, T.C. (2011-03-09)
    We describe a model of inelastic and elastic collisional dynamics of atoms in an optical dipole trap that utilizes numerical evaluation of statistical mechanical quantities and numerical solution of equations for the ...
  • Observation of a narrow mass state decaying into Υ(1S)+γ in pp¯ collisions at s√=1.96  TeV 

    D0 Collaboration; Chandra, A.; Corcoran, M.; Orduna, J.; Prewitt, M. (2012)
    Using data corresponding to an integrated luminosity of 1.3  fb−1, we observe a narrow mass state decaying into Υ(1S)+γ, where the Υ(1S) meson is detected by its decay into a pair of oppositely charged muons, and the photon ...
  • Observation of a peaking structure in the J/ψϕ mass spectrum from B±→ J/ψϕK± decays 

    CMS Collaboration; Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2014)
    A peaking structure in the J/ψϕ mass spectrum near threshold is observed in B±→J/ψϕK± decays, produced in pp collisions at √s=7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the ...
  • Observation of antiferromagnetic correlations in the Hubbard model with ultracold atoms 

    Hart, Russell A.; Duarte, Pedro M.; Yang, Tsung-Lin; Liu, Xinxing; Paiva, Thereza; Khatami, Ehsan; Scalettar, Richard T.; Trivedi, Nandini; Huse, David A.; Hulet, Randall G. (2015)
    Ultracold atoms in optical lattices have great potential to contribute to a better understanding of some of the most important issues in many-body physics, such as high-temperature superconductivity [1]. The Hubbard modelラa ...
  • Observation of D0 Meson Nuclear Modifications in Au+Au Collisions at √sNN=200  GeV 

    STAR Collaboration; Butterworth, J.; Eppley, G.; Geurts, F.; Llope, W.J.; Roberts, J.B.; Xin, K.; Yepes, P. (2014)
    We report the first measurement of charmed-hadron (D0) production via the hadronic decay channel (D0→K−+π+) in Au+Au collisions at √sNN=200  GeV with the STAR experiment. The charm production cross section per nucleon-nucleon ...
  • Observation of Edge Transport in the Disordered Regime of Topologically Insulating InAs/GaSb Quantum Wells 

    Knez, Ivan; Rettner, Charles T.; Yang, See-Hun; Parkin, Stuart S.P.; Du, Lingjie; Du, Rui-Rui; Sullivan, Gerard (2014-01)
    We observe edge transport in the topologically insulating InAs=GaSb system in the disordered regime. Using asymmetric current paths we show that conduction occurs exclusively along the device edge, exhibiting a large Hall ...
  • Observation of Forbidden Exciton Transitions Mediated by Coulomb Interactions in Photoexcited Semiconductor Quantum Wells 

    Rice, W.D.; Kono, J.; Zybell, S.; Winnerl, S.; Bhattacharyya, J.; Schneider, H.; Helm, M.; Ewers, B.; Chernikov, A.; Koch, M.; Chatterjee, S.; Khitrova, G.; Gibbs, H.M.; Schneebeli, L.; Breddermann, B.; Kira, M.; Koch, S.W. (2013)
    We use terahertz pulses to induce resonant transitions between the eigenstates of optically generated exciton populations in a high-quality semiconductor quantum well sample. Monitoring the excitonic photoluminescence, ...
  • Observation of Quantum Jumps in a Single Atom 

    Bergquist, J.C.; Hulet, Randall G.; Itano, Wayne M.; Wineland, D.J. (1986)
    We detect the radiatively driven electric quadrupole transition to the metastable D522 state in a single, laser-cooled Hg II ion by monitoring the abrupt cessation of the fluorescence signal from the laser-excited S122→P122 ...
  • Observation of the Associated Production of a Single Top Quark and a W Boson in pp Collisions at √s=8 TeV 

    CMS Collaboration; Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2014)
    The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2  fb−1 of proton-proton collisions ...
  • Observation of the Associated Production of a Single Top Quark and a W Boson in pp Collisions at √s=8  TeV 

    CMS Collaboration; Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2014)
    The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2  fb−1 of proton-proton collisions ...
  • Observation of the diphoton decay of the Higgs boson and measurement of its properties 

    CMS Collaboration; Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2014)
    Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton ...
  • Observation of velocity-tuned multiphoton "Doppleron" resonances in laser-cooled atoms 

    Tollett, J.J.; Chen, J.; Story, J.G.; Ritchie, N.W.M.; Bradley, C.C.; Hulet, Randall G. (1990)
    An atomic beam of Li was transversely cooled using an intense standing-wave radiation field. A dramatic change in the transverse velocity distribution was observed. Structure in the resulting velocity distribution was found ...
  • Observational Tests of Magnetospheric Accretion Models in Young Stars 

    Johns-Krull, Christopher M.; Cauley, P. Wilson (2014)
    Magnetically controlled accretion of disk material onto the surface of Classical T Tauri stars is the dominant paradigm in our understanding of how these young stars interact with their surrounding disks. These stars provide ...
  • OBSERVATIONS OF PLASMA UPFLOW IN A WARM LOOP WITH HINODE/EIS 

    Tripathi, Durgesh; Mason, Helen E.; Del Zanna, Giulio; Bradshaw, Steven (2012)
    A complete understanding of Doppler shift in active region loops can help probe the basic physical mechanism involved into the heating of those loops. Here, we present observations of upflows in coronal loops detected ...
  • On the pH-Responsive, Charge-Selective, Polymer-Brush-Mediated Transport Probed by Traditional and Scanning Fluorescence Correlation Spectroscopy 

    Daniels, C.R.; Tauzin, L.J.; Foster, E.; Advincula, R.C.; Landes, C.F. (2013)
    The complete and reversible charge-selective sequestration of fluorophores by a weak polyelectrolyte brush, poly(2-(dimethylamino)ethylmethacrylate) (PDMAEMA) was demonstrated using fluorescence correlation spectroscopy ...
  • ON THE STRUCTURE AND STABILITY OF MAGNETIC TOWER JETS 

    Huarte-Espinosa, M.; Blackman, E.G.; Ciardi, A.; Hartigan, P.; Lebedev, S.V.; Chittenden, J.P. (2012)
    Modern theoretical models of astrophysical jets combine accretion, rotation, and magnetic fields to launch and collimate supersonic flows from a central source. Near the source, magnetic field strengths must be large ...
  • Opening gaps in the spectrum of strictly ergodic Schrodinger operators 

    Avila, Artur; Bochi, Jairo; Damanik, David (2012)
    We consider Schrodinger operators with dynamically defined potentials arising from continuous sampling along orbits of strictly ergodic transformations. The Gap Labeling Theorem states that the possible gaps in the ...
  • Optical characterization of single plasmonic nanoparticles 

    Olson, Jana; Dominguez-Medina, Sergio; Hoggard, Anneli; Wang, Lin-Yung; Chang, Wei-Shun; Link, Stephan (2014)
    This tutorial review surveys the optical properties of plasmonic nanoparticles studied by various single particle spectroscopy techniques. The surface plasmon resonance of metallic nanoparticles depends sensitively on the ...
  • Optical detection of a Bardeen-Cooper-Schrieffer phase transition in a trapped gas of fermionic atoms 

    Zhang, Weiping; Sackett, C.A.; Hulet, R.G. (1999)
    A theoretical treatment of light scattering from a degenerate Fermi gas of trapped ultracold 6Li atoms is presented. We find that the scattered light contains information that directly reflects the quantum pair correlation ...
  • Optical Probes of Ultracold Neutral Plasmas 

    Laha, S.; Gao, H.; Castro, J.; Gupta, P.; Simien, C.E.; Killian, T.C. (2007)
  • Optical Properties of Star-Shaped Gold Nanoparticles 

    Nehl, Colleen L.; Liao, Hongwei; Hafner, Jason H. (2006-03-28)
  • Optimization of evaporative cooling 

    Sackett, C.A.; Bradley, C.C.; Hulet, R.G. (1997)
    Recent experiments have used forced evaporative cooling to produce Bose-Einstein condensation in dilute gases. The evaporative cooling process can be optimized to provide the maximum phase-space density with a specified ...
  • Organic synthesis: the art and science of replicating the molecules of living nature and creating others like them in the laboratory 

    Nicolaou, K.C. (2014-03-08)
    Synthetic organic chemists have the power to replicate some of the most intriguing molecules of living nature in the laboratory and apply their developed synthetic strategies and technologies to construct variations of ...
  • Origin and Structure of the Quasi-Landau Resonances 

    Castro, Jarbas C.; Zimmerman, Myron L.; Hulet, Randall G.; Kleppner, Daniel; Freeman, Richard R. (1980)
    Highly resolved spectra are presented which show how the low-magnetic-field energy-level structure of a single-electron atom gives rise to the quasi-Landau resonances as the field is increased. Data from the strong-mixing ...
  • The Origin of Minus-end Directionality and Mechanochemistry of Ncd Motors 

    Jana, Biman; Hyeon, Changbong; Onuchic, José N. (2012-11-15)
    Adaptation of molecular structure to the ligand chemistry and interaction with the cytoskeletal filament are key to understanding the mechanochemistry of molecular motors. Despite the striking structural similarity with ...
  • Pacific plate deformation from horizontal thermal contraction 

    Kreemer, Corné; Gordon, Richard G. (2014-08-15)
    The central approximation of plate tectonics is that the plates are rigid, which gives the theory its rigor and predictive power. Space geodetic measurements are consistent with the rigidity of stable plate interiors, but ...
  • Paintable Battery 

    Singh, Neelam; Galande, Charudatta; Miranda, Andrea; Mathkar, Akshay; Gao, Wei; Reddy, Arava Leela Mohana; Vlad, Alexandru; Ajayan, Pulickel M. (2012-06-28)
    If the components of a battery, including electrodes, separator, electrolyte and the current collectors can be designed as paints and applied sequentially to build a complete battery, on any arbitrary surface, it would ...
  • Pairing and Phase Separation in a Polarized Fermi Gas 

    Partridge, Guthrie B.; Li, Wenhui; Kamar, Ramsey I.; Liao, Yean-an; Hulet, Randall G. (2006)
    We report the observation of pairing in a gas of atomic fermions with unequal numbers of two components. Beyond a critical polarization, the gas separates into a phase that is consistent with a superfluid paired core ...
  • Performance of the CMS missing transverse momentum reconstruction in pp data at √s = 8 TeV 

    CMS Collaboration; Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2015)
    The performance of missing transverse energy reconstruction algorithms is presented using √s=8 TeV proton-proton (pp) data collected with the CMS detector. Events with anomalous missing transverse energy are studied, and ...
  • Permanent magnet trap for cold atoms 

    Tollett, J.J.; Bradley, C.C.; Sackett, C.A.; Hulet, R.G. (1995)
    We report the trapping of neutral atoms in a permanent magnet trap. Approximately 1×10˄8 ground-state lithium atoms have been confined in a nonzero magnetic-field minimum produced by six permanent magnets in an Ioffe ...
  • Peroxisomes Are Required for Lipid Metabolism and Muscle Function in Drosophila melanogaster 

    Faust, Joseph E.; Manisundaram, Arvind; Ivanova, Pavlina T.; Milne, Stephen B.; Summerville, James B.; Brown, H. Alex; Wangler, Michael; Stern, Michael; McNew, James A. (2014-06-19)
    Peroxisomes are ubiquitous organelles that perform lipid and reactive oxygen species metabolism. Defects in peroxisome biogenesis cause peroxisome biogenesis disorders (PBDs). The most severe PBD, Zellweger syndrome, is ...
  • Petawatt laser absorption bounded 

    Levy, Matthew C.; Wilks, Scott C.; Tabak, Max; Libby, Stephen B.; Baring, Matthew G. (2014)
    The interaction of petawatt (1015W) lasers with solid matter forms the basis for advanced scientific applications such as table-top particle accelerators, ultrafast imaging systems and laser fusion. Key metrics for these ...
  • Phase coherence and superfluid-insulator transition in a disordered Bose-Einstein condensate 

    Chen, Yong P.; Hitchcock, J.; Dries, D.; Junker, M.; Welford, C.; Hulet, R.G. (2008)
    We have studied the effects of a disordered optical potential on the transport and phase coherence of a Bose-Einstein condensate (BEC) of L7i atoms. At moderate disorder strengths (VD), we observe inhibited transport and ...
  • Phase diagram structures in a periodic one-dimensional exclusion process 

    Jiang, Rui; Wang, Yu-Qing; Kolomeisky, Anatoly B.; Huang, Wei; Hu, Mao-Bin; Wu, Qing-Song (2013-01-08)
    This paper studies a periodic one-dimensional exclusion process composed of a driven part and a biased diffusive part in a mesoscopic limit. It is shown that, depending on the biased diffusion parameter δ, rich phase diagram ...
  • Photoabsorption by Ultracold Atoms and the Scattering Length 

    Côté, R.; Dalgarno, A.; Sun, Y.; Hulet, R.G. (1995)
    It is shown that photoabsorption in a gas of ultracold atoms depends on the sign and magnitude of the scattering length in the scattering of a pair of atoms. Measurements of fluorescence in 7Li are interpreted to show that ...
  • Photoassociation of a Bose-Einstein Condensate near a Feshbach Resonance 

    Junker, M.; Dries, D.; Welford, C.; Hitchcock, J.; Chen, Y.P.; Hulet, R.G. (2008)
    We measure the effect of a magnetic Feshbach resonance (FR) on the rate and light-induced frequency shift of a photoassociation resonance in ultracold Li7. The photoassociation-induced loss-rate coefficient Kp depends ...
  • Photoassociative frequency shift in a quantum degenerate gas 

    Gerton, Jordan M.; Frew, Brian J.; Hulet, Randall G. (2001)
    A light-induced frequency shift is observed in single-photon photoassociative spectra of magnetically trapped, quantum degenerate 7Li. The shift is a manifestation of the coupling between the threshold continuum scattering ...
  • Photoassociative Spectroscopy at Long Range in Ultracold Strontium 

    Nagel, S.B.; Mickelson, P.G.; Saenz, A.D.; Martinez, Y.N.; Chen, Y.C.; Killian, T.C.; Pellegrini, P.; Cote, R. (2005-03-03)
  • Photobleaching Lifetimes of Cyanine Fluorophores Used for Single Molecule Förster Resonance Energy Transfer in the Presence of Various Photoprotection Systems 

    Cooper, David; Uhm, Heui; Tauzin, Lawrence J.; Poddar, Nitesh; Landes, Christy F. (2013-06-17)
    We investigated various photoprotection system combinations to find the combination that optimally extended the photobleach lifetime of a Cy3/Cy5 smFRET pair attached to a DNA hairpin in a single-molecule environment. We ...
  • Physical model of the immune response of bacteria against bacteriophage through the adaptive CRISPR-Cas immune system 

    Han, Pu; Niestemski, Liang Ren; Barrick, Jeffrey E.; Deem, Michael W. (2013)
    Bacteria and archaea have evolved an adaptive, heritable immune system that recognizes and protects against viruses or plasmids. This system, known as the CRISPR-Cas system, allows the host to recognize and incorporate ...
  • The physics of bacterial decision making 

    Ben-Jacob, Eshel; Lu, Mingyang; Schultz, Daniel; Onuchic, José N. (2014)
    The choice that bacteria make between sporulation and competence when subjected to stress provides a prototypical example of collective cell fate determination that is stochastic on the individual cell level, yet predictable ...
  • The Picard group of the moduli space of curves with level structures 

    Putman, Andrew (2012)
    For 4 - L and g large, we calculate the integral Picard groups of the moduli spaces of curves and principally polarized abelian varieties with level L structures. In particular, we determine the divisibility properties of ...
  • Pierced Lasso Bundles Are a New Class of Knot-like Motifs 

    Haglund, Ellinor; Sulkowska, Joanna I.; Noel, Jeffrey K.; Lammert, Heiko; Onuchic, José N.; Jennings, Patricia A. (2014)
    A four-helix bundle is a well-characterized motif often used as a target for designed pharmaceutical therapeutics and nutritional supplements. Recently, we discovered a new structural complexity within this motif created ...
  • Plant Peroxisomes: Biogenesis and Function 

    Hu, Jianping; Baker, Alison; Bartel, Bonnie; Linka, Nicole; Mullen, Robert T.; Reumann, Sigrun; Zolman, Bethany K. (2012-06)
    Peroxisomes are eukaryotic organelles that are highly dynamic both in morphology and metabolism. Plant peroxisomes are involved in numerous processes, including primary and secondary metabolism, development, and responses ...
  • Plant size and reproductive state affect the quantity and quality of rewards to animal mutualists 

    Miller, Tom E.X. (2014)
    Many plants engage ants in defensive mutualisms by offering extrafloral nectar (EFN). Identifying sources of variation in EFN quantity (amount) and quality (composition) is important because they can affect ant visitation ...
  • Plasmonic Nanobubbles Rapidly Detect and Destroy Drug-Resistant Tumors 

    Lukianova-Hleb, Ekaterina Y.; Ren, Xiaoyang; Townley, Debra; Wu, Xiangwei; Kupferman, Michael E. (2012)
    The resistance of residual cancer cells after oncological resection to adjuvant chemoradiotherapies results in both high recurrence rates and high non-specific tissue toxicity, thus preventing the successful treatment of ...
  • Plasmonic Polymers Unraveled Through Single Particle Spectroscopy 

    Slaughter, Liane S.; Wang, Lin-Yung; Willingham, Britain A.; Olson, Jana M.; Swanglap, Pattanawit; Dominguez-Medina, Sergio; Link, Stephan (2014-08-13)
    Plasmonic polymers are quasi one-dimensional assemblies of nanoparticles whose optical responses are governed by near-field coupling of localized surface plasmons. Through single particle extinction spectroscopy correlated ...
  • Population dynamics and the stability of obligate pollination mutualisms 

    Holland, J. Nathaniel; DeAngelis, Donald L. (2001)
    Mutualistic interactions almost always produce both costs and benefits for each of the interacting species. It is the difference between gross benefits and costs that determines the net benefit and the per-capita effect ...