Now showing items 641-700 of 983

• #### Radiative Decay Rates in Hg+ from Observations of Quantum Jumps in a Single Ion ﻿

(1987)
Radiative decay rates connecting the lowest four energy levels of Hg+198 have been derived solely from an analysis of the fluctuations (quantum jumps) of the laser-induced fluorescence of the 194-nm first resonance transition ...

(1996)
We determine the radial dipole moment between the 2S and 2P states of atomic lithium by analyzing the long-range vibrational eigenenergies of the singly excited diatomic molecule. The result can be expressed in terms of ...
• #### Rampant Parasexuality Evolves in a Hospital Pathogen during Antibiotic Selection ﻿

(2015)
Horizontal gene transfer threatens the therapeutic success of antibiotics by facilitating the rapid dissemination of resistance alleles among bacterial species. The conjugative mobile element Tn916 provides an excellent ...
• #### Random Insertion of mCherry Into VP3 Domain of Adeno- associated Virus Yields Fluorescent Capsids With no Loss of Infectivity ﻿

(2012)
Adeno-associated virus (AAV)-derived vectors are promising gene delivery systems, and a number of design strategies have been pursued to improve their performance. For example, genetic insertion of proteins into the capsid ...
• #### RANK- and c-Met-mediated signal network promotes prostate cancer metastatic colonization ﻿

(2014)
Prostate cancer (PCa) metastasis to bone is lethal and there is no adequate animal model to study the mechanisms underlying the metastatic process. Here we report that receptor activator of NF-κB ligand (RANKL) expressed ...
• #### Rapid Exploration of Configuration Space with Diffusion-Map-Directed Molecular Dynamics ﻿

(2013)
The gap between the time scale of interesting behavior in macromolecular systems and that which our computational resources can afford often limits molecular dynamics (MD) from understanding experimental results and ...
• #### Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at √s=7  TeV ﻿

(2013)
Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at √s=7  TeV, ...

(2012)
• #### Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton–proton collisions at √s=7 TeV ﻿

(2012)
A study of dijet production in proton–proton collisions was performed at √s=7~TeV for jets with p T>35 GeV and |y|<4.7 using data collected with the CMS detector at the LHC in 2010. Events with at least one pair of jets ...
• #### Ray-parameter based stacking and enhanced pre-conditioning for stable inversion of receiver function data ﻿

(2013-05-30)
While inversion of seismic velocity from receiver function data could be instable due to its intrinsic non-linearity and non-uniqueness, improper stacking of receiver function could also introduce significant biases to ...
• #### RCM-E simulation of a thin arc preceded by a north-south-aligned auroral streamer ﻿

(2014)
The Time History of Events and Macroscale Interactions during Substorms (THEMIS) all-sky imager data have recently revealed a repeatable sequence that occurs during many auroral substorms, in which a newly formed thin arc ...
• #### RCM-E simulation of bimodal transport in the plasma sheet ﻿

(2014)
Plasma sheet transport is bimodal, consisting of both large-scale adiabatic convection and intermittent bursty flows in both earthward and tailward directions. We present two comparison simulations with the Rice Convection ...
• #### Reactive Infiltration of MORB-Eclogite-Derived Carbonated Silicate Melt into Fertile Peridotite at 3GPa and Genesis of Alkalic Magmas ﻿

(2013-09-10)
We performed experiments between two different carbonated eclogite-derived melts and lherzolite at 1375°C and 3 GPa by varying the reacting melt fraction from 8 to 50 wt %. The two starting melt compositions were (1) alkalic ...
• #### Real-time tracking of CO migration and binding in the α and β subunits of human hemoglobin via 150-ps time-resolved Laue crystallography ﻿

(2013)
We have developed the method of picosecond Laue crystallography and used this capability to probe ligand dynamics in tetrameric R-state hemoglobin (Hb). Time-resolved, 2 Å-resolution electron density maps of photolyzed ...
• #### Realization of a measurement of a ‘‘weak value’’ ﻿

(1991)
We present the first realization of a measurement of a ‘‘weak value,’’ a concept recently introduced by Aharonov, Albert, and Vaidman (AAV). Our experiment uses a birefringent crystal to separate the two linear-polarization ...
• #### Relating vesicle shapes in pyroclasts to eruption styles ﻿

(2013)
Vesicles in pyroclasts provide a direct record of conduit conditions during explosive volcanic eruptions. Although their numbers and sizes are used routinely to infer aspects of eruption dynamics, vesicle shape remains ...
• #### Relaxivity Enhancement of Aquated Tris(β-diketonate)gadolinium(III) Chelates by Confinement within Ultrashort Single-walled Carbon Nanotubes ﻿

(2014)
Ultrashort single-walled carbon nanotubes loaded with gadolinium ions (gadonanotubes) have been previously shown to exhibit extremely high T1-weighted relaxivities (>100 mM-1s-1). To further examine the effect of nanoconfinement ...
• #### Remotely triggered cisplatin release from carbon nanocapsules by radiofrequency fields ﻿

(2013)
The efficacy of nanoparticle-mediated drug delivery is limited by its peri-vascular sequestration, thus necessitating a strategy to trigger drug release from such intra-tumoral nanocarrier-drug depots. In our efforts to ...
• #### Renormalized energies of superfluorescent bursts from an electron-hole magnetoplasma with high gain in InxGa1−xAs quantum wells ﻿

(2013)
We study light emission properties of a population-inverted 2D electron-hole plasma in a quantizing magnetic field. We observe a series of superfluorescent (SF) bursts, discrete both in time and energy, corresponding ...
• #### Resolving the roles of body size and species identity in driving functional diversity ﻿

(2014)
Efforts to characterize food webs have generated two influential approaches that reduce the complexity of natural communities. The traditional approach groups individuals based on their species identity, while recently ...
• #### Revenge of the host: cannibalism, ontogenetic niche shifts, and the evolution of life-history strategies in host–parasitoid systems ﻿

(2012)
Question: How does cannibalism in the host alter the evolution of a parasitoid’s oviposition strategy? Can differences in cannibalism risk between parasitized and healthy hosts alter the stage-specific foraging of parasitoids? ...
• #### The Ribosomal S10 Protein Is a General Target for Decreased Tigecycline Susceptibility ﻿

(2015)
Tigecycline is a translational inhibitor with efficacy against a wide range of pathogens. Using experimental evolution, we adapted Acinetobacter baumannii, Enterococcus faecium, Escherichia coli, and Staphylococcus aureus ...
• #### Robust Helical Edge Transport in Gated InAs/GaSb Bilayers ﻿

(2015)
We have engineered electron-hole bilayers of inverted InAs/GaSb quantum wells, using dilute silicon impurity doping to suppress residual bulk conductance. We have observed robust helical edge states with wide conductance ...
• #### Robust Subnanometric Plasmon Ruler by Rescaling of the Nonlocal Optical Response ﻿

(2013)
We present the optical response of two interacting metallic nanowires calculated for separation distances down to angstrom range. State-of-the-art local and nonlocal approaches are compared with full quantum time-dependent ...
• #### A role for the root cap in root branching revealed by the non-auxin probe naxillin ﻿

(2012)
The acquisition of water and nutrients by plant roots is a fundamental aspect of agriculture and strongly depends on root architecture. Root branching and expansion of the root system is achieved through the development ...
• #### The Role of Multifilament Structures and Lateral Interactions in Dynamics of Cytoskeleton Proteins and Assemblies ﻿

(2015)
Microtubules and actin filaments are biopolymer molecules that are major components of cytoskeleton networks in biological cells. They play important roles in supporting fundamental cellular processes such as cell division, ...
• #### Rydberg Atoms in "Circular" States ﻿

(1983)
The population of a beam of lithium atoms has been transferred from a low angular momentum Rydberg state to a state with |m|=n−1, with nearly 100% efficiency. Selective field ionization is employed to detect the high |m| ...
• #### Scaffolds to Control Inflammation and Facilitate Dental Pulp Regeneration ﻿

(2014)
In dentistry, the maintenance of a vital dental pulp is of paramount importance because teeth devitalized by root canal treatment may become more brittle and prone to structural failure over time. Advanced carious lesions ...
• #### Scanning-Ion Microscopy with Polarization Analysis (Simpa) ﻿

(1993)
We have developed a novel, high-resolution magnetic imaging technique, scanning-ion microscopy with polarization analysis (SIMP A). In SIMP A, a highly-focused, scanning Ga+ ion beam is used to excite spin-polarized electrons ...

(2004-11-04)
• #### A search for a doubly-charged Higgs boson in pp collisions at √s=7 TeV ﻿

(2012)
A search for a doubly-charged Higgs boson in pp collisions at √s=7 TeV is presented. The data correspond to an integrated luminosity of 4.9 fb−1, collected by the CMS experiment at the LHC. The search is performed using ...
• #### Search for a fermiophobic Higgs boson in pp collisions at √s=7 TeV ﻿

(2012)
Combined results are reported from searches for a fermiophobic Higgs boson in the γγ, WW, and ZZ decay modes in proton-proton collisions at √s=7 TeV. The explored Higgs boson mass range is 110–300 GeV. The data sample ...
• #### Search for a Higgs boson decaying into a b-quark pair and produced in association with b quarks in proton–proton collisions at 7 TeV ﻿

(2013)
A search for a neutral Higgs boson decaying to a pair of b quarks, and produced in association with at least one additional b quark, is presented. Multijet final states with three jets identified as originating from b ...
• #### Search for a Higgs boson decaying into a Z and a photon in pp collisions at √s=7 and 8 TeV ﻿

(2013)
A search for a Higgs boson decaying into a Z boson and a photon is described. The analysis is performed using proton–proton collision datasets recorded by the CMS detector at the LHC. Events were collected at center-of-mass ...
• #### Search for a Higgs boson in the decay channel H → ZZ(*) → q¯q ℓ − ℓ + in pp collisions at √s=7 TeV ﻿

(2012)
A search for the standard model Higgs boson decaying into two Z bosons with subsequent decay into a final state containing two quark jets and two leptons, H → ZZ(*) → qq¯¯¯ ℓ − ℓ + is presented. Results are based on data ...
• #### Search for a light charged Higgs boson in top quark decays in pp collisions at √s=7 TeV ﻿

(2012)
Results are presented on a search for a light charged Higgs boson that can be produced in the decay of the top quark t → H+b and which, in turn, decays into τ +ν τ . The analysed data correspond to an integrated luminosity ...
• #### Search for a Light Pseudoscalar Higgs Boson in the Dimuon Decay Channel in pp Collisions at √s=7  TeV ﻿

(2012)
The dimuon invariant mass spectrum is searched in the range between 5.5 and 14 GeV for a light pseudoscalar Higgs boson a, predicted in a number of new physics models, including the next-to-minimal supersymmetric standard ...
• #### Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the qq¯ℓ+ℓ− final state ﻿

(2013)
Results are presented from a search for a narrow, spin-2 resonance decaying into a pair of Z bosons, with one Z-boson decaying into leptons (e+e− or μ+μ−) and the other into jets. An example of such a resonance is the ...
• #### Search for a new bottomonium state decaying to ϒ(1S)π+π− in pp collisions at √s=8 TeV ﻿

(2013)
The results of a search for the bottomonium counterpart, denoted as Xb, of the exotic charmonium state X(3872) is presented. The analysis is based on a sample of pp collisions at √s=8 TeV collected by the CMS experiment ...
• #### Search for a non-standard-model Higgs boson decaying to a pair of new light bosons in four-muon final states ﻿

(2013)
Results are reported from a search for non-standard-model Higgs boson decays to pairs of new light bosons, each of which decays into the μ+μ− final state. The new bosons may be produced either promptly or via a decay chain. ...
• #### Search for a standard model-like Higgs boson in the μ+μ− and e+e− decay channels at the LHC ﻿

(2015)
A search is presented for a standard model-like Higgs boson decaying to the μ+μ− or e+e− final states based on proton–proton collisions recorded by the CMS experiment at the CERN LHC. The data correspond to integrated ...
• #### Search for a standard-model-like Higgs boson with a mass in the range 145 to 1000 GeV at the LHC ﻿

(2013)
A search for a standard-model-like Higgs boson in the H→WW and H→ZZ decay channels is reported, for Higgs boson masses in the range 145<m H<1000 GeV. The search is based upon proton–proton collision data samples corresponding ...
• #### Search for a Vectorlike Quark with Charge 2/3 in t+Z Events from pp Collisions at √s=7  TeV ﻿

(2011)
A search for pair-produced heavy vectorlike charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC. Events consistent with the flavor-changing-neutral-current ...
• #### Search for a W′ boson decaying to a bottom quark and a top quark in pp collisions at √s=7 TeV ﻿

(2013)
Results are presented from a search for a W′ boson using a dataset corresponding to 5.0 fb−1 of integrated luminosity collected during 2011 by the CMS experiment at the LHC in pp collisions at √s=7 TeV. The W′ boson is ...
• #### Search for a W′ or Techni-ρ Decaying into WZ in pp Collisions at √s=7  TeV ﻿

(2012)
A search is performed in pp collisions at √s=7  TeV for exotic particles decaying via WZ to final states with electrons and muons. The data sample corresponds to an integrated luminosity of approximately 5  fb−1. No ...
• #### Search for anomalous production of events with three or more leptons in pp collisions at √s=8  TeV ﻿

(2014)
A search for physics beyond the standard model in events with at least three leptons is presented. The data sample, corresponding to an integrated luminosity of 19.5  fb−1 of proton-proton collisions with center-of-mass ...
• #### Search for anomalous production of events with three or more leptons in pp collisions at √s=8  TeV ﻿

(2014)
A search for physics beyond the standard model in events with at least three leptons is presented. The data sample, corresponding to an integrated luminosity of 19.5  fb−1 of proton-proton collisions with center-of-mass ...
• #### Search for anomalous production of highly boosted Z bosons decaying to μ+μ− in proton–proton collisions at √s=7 TeV ﻿

(2013)
Results are reported from a search for the anomalous production of highly boosted Z bosons with large transverse momentum and decaying to μ+μ−. Such Z bosons may be produced in the decays of new heavy particles. The search ...
• #### Search for anomalous production of multilepton events in pp collisions at √s=7TeV ﻿

(2012)
A search for anomalous production of events with three or more isolated leptons in pp collisions at √s=7TeV is presented. The data, corresponding to an integrated luminosity of 4.98 fb−1, were collected by the CMS experiment ...
• #### Search for anomalous t¯t production in the highly-boosted all-hadronic final state ﻿

(2012)
A search is presented for a massive particle, generically referred to as a Z′, decaying into a tt¯ pair. The search focuses on Z′ resonances that are sufficiently massive to produce highly Lorentz-boosted top quarks, which ...
• #### Search for B0s → μ + μ − and B0 → μ + μ − decays ﻿

(2012)
A search for the rare decays B0s → μ + μ − and B0 → μ + μ − is performed in pp collisions at √s=7TeV, with a data sample corresponding to an integrated luminosity of 5 fb−1 collected by the CMS experiment at the LHC. In ...
• #### Search for baryon number violation in top-quark decays ﻿

(2014)
A search for baryon number violation (BNV) in top-quark decays is performed using pp collisions produced by the LHC at √s=8 TeV. The top-quark decay considered in this search results in one light lepton (muon or electron), ...
• #### Search for baryon number violation in top-quark decays ﻿

(2014)
A search for baryon number violation (BNV) in top-quark decays is performed using pp collisions produced by the LHC at √s=8 TeV. The top-quark decay considered in this search results in one light lepton (muon or electron), ...
• #### Search for charge-asymmetric production of W′W′ bosons in tt¯+jet events from pp collisions at √s=7 TeV ﻿

(2012)
A search is presented for charge-asymmetric production of a W′ boson that has been proposed to accommodate the forward–backward asymmetry observed in the production of top–antitop quark pairs at the Tevatron. The new heavy ...
• #### Search for charged Higgs bosons through the violation of lepton universality in t¯t events using pp collision data at ps = 7 TeV with the ATLAS experiment ﻿

(2013)
In several extensions of the Standard Model, the top quark can decay into a bottom quark and a light charged Higgs boson H+, t → bH+, in addition to the Standard Model decay t → bW. Since W bosons decay to the three ...
• #### Search for contact interactions in μ+μ− events in pp collisions at √s=7  TeV ﻿

(2013)
Results are reported from a search for the effects of contact interactions using events with a high-mass, oppositely charged muon pair. The events are collected in proton-proton collisions at √s=7  TeV using the Compact ...
• #### Search for contact interactions using the inclusive jet pT spectrum in pp collisions at √s=7  TeV ﻿

(2013)
Results are reported of a search for a deviation in the jet production cross section from the prediction of perturbative quantum chromodynamics at next-to-leading order. The search is conducted using a 7 TeV proton-proton ...
• #### Search for dark matter and large extra dimensions in monojet events in pp collisions at √s=7 TeV ﻿

(2012)
A search has been made for events containing an energetic jet and an imbalance in transverse momentum using a data sample of pp collisions at a center-of-mass energy of 7 TeV. This signature is common to both dark matter ...
• #### Search for Dark Matter and Large Extra Dimensions in pp Collisions Yielding a Photon and Missing Transverse Energy ﻿

(2012)
Results are presented from a search for new physics in the final state containing a photon (γ) and missing transverse energy (E̸T). The data correspond to an integrated luminosity of 5.0  fb−1 collected in pp collisions ...
• #### Search for decays of stopped long-lived particles produced in proton–proton collisions at √s=8TeV ﻿

(2015)
A search has been performed for long-lived particles that could have come to rest within the CMS detector, using the time intervals between LHC beam crossings. The existence of such particles could be deduced from observation ...