Now showing items 1137-1156 of 2142

• #### (n,m)-Specific Absorption Cross Sections of Single-Walled Carbon Nanotubes Measured by Variance Spectroscopy ﻿

(2016)
A new method based on variance spectroscopy has enabled the determination of absolute absorption cross sections for the first electronic transition of 12 (n,m) structural species of semiconducting single-walled carbon ...
• #### 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 autophagy ...
• #### NaFe0.56Cu0.44As: A Pnictide Insulating Phase Induced by On-Site Coulomb Interaction ﻿

(2016)
In the studies of iron pnictides, a key question is whether their bad-metal state from which the superconductivity emerges lies in close proximity with a magnetically ordered insulating phase. Recently, it was found that ...
• #### Nanofibrous Snake Venom Hemostat ﻿

(2015)
Controlling perioperative bleeding is of critical importance to minimize hemorrhaging and fatality. Patients on anticoagulant therapy such as heparin have diminished clotting potential and are at risk for hemorrhaging. ...
• #### 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 ...
• #### Nanoparticulate carbon black in cigarette smoke induces DNA cleavage and Th17-mediated emphysema ﻿

(2015)
Chronic inhalation of cigarette smoke is the major cause of sterile inflammation and pulmonary emphysema. The effect of carbon black (CB), a universal constituent of smoke derived from the incomplete combustion of organic ...

(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 ...
• #### Nanostructure investigations of nonlinear differential conductance in NdNiO3 thin films ﻿

(2014)
Transport measurements on thin films of NdNiO3 reveal a crossover to a regime of pronounced nonlinear conduction below the well-known metal-insulator transition temperature. The evolution of the transport properties at ...
• #### A Nanostructured Synthetic Collagen Mimic for Hemostasis ﻿

(2014)
Collagen is a major component of the extracellular matrix and plays a wide variety of important roles in blood clotting, healing, and tissue remodeling. Natural, animal derived, collagen is used in many clinical applications ...
• #### A native plant competitor mediates the impact of above- and belowground damage on an invasive tree ﻿

(2016)
Plant competition may mediate the impacts of herbivory on invasive plant species through effects on plant growth and defense. This may predictably depend on whether herbivory occurs above or below ground and on relative ...
• #### Natural supersymmetry, muon g−2, and the last crevices for the top squark ﻿

(2015)
We study the interplay of natural supersymmetry and a supersymmetric solution to the discrepancy observed in measurements of the muon magnetic moment. The strongest constraints on the parameter space currently come from ...
• #### 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 ...
• #### Nematic Crossover in BaFe2As2 under Uniaxial Stress ﻿

(2015)
Raman scattering can detect spontaneous point-group symmetry breaking without resorting to single-domain samples. Here, we use this technique to study BaFe2As2, the parent compound of the “122” Fe-based superconductors. ...
• #### Nematic magnetoelastic effect contrasted between Ba(Fe1−xCox)2As2 and FeSe ﻿

(2016)
To elucidate the origin of nematic order in Fe-based superconductors, we report a Raman scattering study of lattice dynamics, which quantify the extent of C4-symmetry breaking, in BaFe2As2 and FeSe. FeSe possesses a nematic ...
• #### Nematic Quantum Critical Fluctuations in BaFe2−xNixAs2 ﻿

(2016)
We have systematically studied the nematic fluctuations in the electron-doped iron-based superconductor BaFe2−xNixAs2 by measuring the in-plane resistance change under uniaxial pressure. While the nematic quantum critical ...
• #### 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 ...
• #### Neutron spin resonance as a probe of Fermi surface nesting and superconducting gap symmetry in Ba0.67K0.33(Fe1−xCox)2As2 ﻿

(2018)
We use inelastic neutron scattering to study the energy and wave-vector dependence of the superconductivity-induced resonance in hole-doped Ba0.67K0.33(Fe1−xCox)2As2 (x=0 and 0.08 with Tc≈37 and 28 K, respectively). In ...
• #### Neutron spin resonance as a probe of superconducting gap anisotropy in partially detwinned electron underdoped ${\mathrm{NaFe}}_{0.985}{\mathrm{Co}}_{0.015}\mathrm{As}$ ﻿

(2015)
We use inelastic neutron scattering (INS) to study the spin excitations in partially detwinned NaFe0.985Co0.015As which has coexisting static antiferromagnetic (AF) order and superconductivity (Tc=15 K, TN=30 K). In previous ...
• #### Neutron spin resonance as a probe of superconducting gap anisotropy in partially detwinned electron underdoped NaFe0.985Co0.015As ﻿

(2015)
We use inelastic neutron scattering (INS) to study the spin excitations in partially detwinned NaFe0.985Co0.015As which has coexisting static antiferromagnetic (AF) order and superconductivity (Tc=15 K, TN=30 K). In previous ...