Now showing items 533-592 of 983

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

(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 ﻿

(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 ...

(2013)
• #### NanoSIMS results from olivine-hosted melt embayments: Magma ascent rate during explosive basaltic eruptions ﻿

(2014)
The explosivity of volcanic eruptions is governed in part by the rate at which magma ascends and degasses. Because the time scales of eruptive processes can be exceptionally fast relative to standard geochronometers, magma ...
• #### Negative scattering length of ultracold Li7 gas ﻿

(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 ﻿

(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 Imaging Platform for Visualizing Biological Effects of Non-Invasive Radiofrequency Electric-Field Cancer Hyperthermia ﻿

(2015)
Herein, we present a novel imaging platform to study the biological effects of non-invasive radiofrequency (RF) electric field cancer hyperthermia. This system allows for real-time in vivointravital microscopy (IVM) imaging ...
• #### A new social gene in Dictyostelium discoideum, chtB ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 diffractive contribution to dijet production in proton-proton collisions at √s=7  TeV ﻿

(2013)
The cross section for dijet production in proton-proton collisions at √s=7  TeV is presented as a function of ξ˜, a variable that approximates the fractional momentum loss of the scattered proton in single-diffractive ...
• #### Observation of a narrow mass state decaying into Υ(1S)+γ in pp¯ collisions at s√=1.96  TeV ﻿

(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 new boson at a mass of 125 GeV with the CMS experiment at the LHC ﻿

(2012)
Results are presented from searches for the standard model Higgs boson in proton–proton collisions at √s=7 and 8 TeV in the Compact Muon Solenoid experiment at the LHC, using data samples corresponding to integrated ...
• #### Observation of a new boson with mass near 125 GeV in pp collisions at √s=7 and 8 TeV ﻿

(2013)
A detailed description is reported of the analysis used by the CMS Collaboration in the search for the standard model Higgs boson in pp collisions at the LHC, which led to the observation of a new boson. The data sample ...
• #### Observation of a New Ξb Baryon ﻿

(2012)
The observation of a new b baryon via its strong decay into Ξ−bπ+ (plus charge conjugates) is reported. The measurement uses a data sample of pp collisions at √s=7  TeV collected by the CMS experiment at the LHC, corresponding ...
• #### Observation of a peaking structure in the J/ψϕ mass spectrum from B±→ J/ψϕK± decays ﻿

(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 an Energy-Dependent Difference in Elliptic Flow between Particles and Antiparticles in Relativistic Heavy Ion Collisions ﻿

(2013)
Elliptic flow (v2) values for identified particles at midrapidity in Au+Au collisions, measured by the STAR experiment in the beam energy scan at RHIC at √sNN=7.7–62.4  GeV, are presented. A beam-energy-dependent difference ...
• #### Observation of antiferromagnetic correlations in the Hubbard model with ultracold atoms ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 long-range, near-side angular correlations in pPb collisions at the LHC ﻿

(2013)
Results on two-particle angular correlations for charged particles emitted in pPb collisions at a nucleon–nucleon center-of-mass energy of 5.02 TeV are presented. The analysis uses two million collisions collected with the ...
• #### Observation of Quantum Jumps in a Single Atom ﻿

(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 Sequential Υ Suppression in PbPb Collisions ﻿

(2012)
The suppression of the individual Υ(nS) states in PbPb collisions with respect to their yields in pp data has been measured. The PbPb and pp data sets used in the analysis correspond to integrated luminosities of 150  μb−1 ...
• #### Observation of the Associated Production of a Single Top Quark and a W Boson in pp Collisions at √s=8 TeV ﻿

(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 ﻿

(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 ﻿

(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 the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data ﻿

(2015)
The standard model of particle physics describes the fundamental particles and their interactions via the strong, electromagnetic and weak forces. It provides precise predictions for measurable quantities that can be tested ...
• #### Observation of velocity-tuned multiphoton "Doppleron" resonances in laser-cooled atoms ﻿

(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 ...
• #### Observation of Z decays to four leptons with the CMS detector at the LHC ﻿

(2012)
The first observation of the Z boson decaying to four leptons in proton-proton collisions is presented. The analyzed data set corresponds to an integrated luminosity of 5.02 fb−1 at √s=7 TeV collected by the CMS detector ...
• #### Observational Tests of Magnetospheric Accretion Models in Young Stars ﻿

(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 ﻿

(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 existence and uniqueness of global solutions for the KdV equation with quasi-periodic initial data ﻿

(2015-06-29)
We consider the KdV equation ∂tu+∂3xu+u∂xu=0 with quasi-periodic initial data whose Fourier coefficients decay exponentially and prove existence and uniqueness, in the class of functions which have an expansion with ...
• #### On the pH-Responsive, Charge-Selective, Polymer-Brush-Mediated Transport Probed by Traditional and Scanning Fluorescence Correlation Spectroscopy ﻿

(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 ﻿

(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 ﻿

(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 ...
• #### Operating principles of Notch–Delta–Jagged module of cell–cell communication ﻿

(2015)
Notch pathway is an evolutionarily conserved cell–cell communication mechanism governing cell-fate during development and tumor progression. It is activated when Notch receptor of one cell binds to either of its ligand—Delta ...
• #### Optical characterization of single plasmonic nanoparticles ﻿

(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 ﻿

(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 ...

(2007)

(2006-03-28)
• #### Optimization of evaporative cooling ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 CMS muon reconstruction in pp collision events at √s = 7 TeV ﻿

(2012)
The performance of muon reconstruction, identification, and triggering in CMS has been studied using 40 pb−1 of data collected in pp collisions at √s = 7 TeV at the LHC in 2010. A few benchmark sets of selection criteria ...
• #### Performance of the CMS missing transverse momentum reconstruction in pp data at √s = 8 TeV ﻿

(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 ...
• #### The performance of the CMS muon detector in proton-proton collisions at √s = 7 TeV at the LHC ﻿

(2013)
The performance of all subsystems of the CMS muon detector has been studied by using a sample of proton-proton collision data at √s = 7 TeV collected at the LHC in 2010 that corresponds to an integrated luminosity of ...
• #### Performance of τ-lepton reconstruction and identification in CMS ﻿

(2012)
The performance of τ-lepton reconstruction and identification algorithms is studied using a data sample of proton-proton collisions at √s = 7 TeV, corresponding to an integrated luminosity of 36 pb−1 collected with the CMS ...
• #### Permanent magnet trap for cold atoms ﻿

(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 ﻿

(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 ...
• #### Peroxisomes Are Required for Lipid Metabolism and Muscle Function in Drosophila melanogaster ﻿

(2014)
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 ...