|
|
Creator | Title | Description | Subject | Date |
101 |
|
Vardeny, Zeev Valentine | Mechanically stretchable and reversibly deformable liquid metal-based plasmonics | We demonstrate that liquid metals are attractive materials for active plasmonic devices at terahertz frequencies. Using a liquid metal injected into an elastomeric mold, we measure the static and stretched transmission properties of aperture arrays. | | 2012-01-01 |
102 |
|
Capecchi, Mario R. | Production of selenoprotein P (Sepp1) by hepatocytes is central to selenium homeostasis | Background: Sepp1 transports selenium, but its complete role in selenium homeostasis is not known. Results: Deletion of Sepp1 in hepatocytes increases liver selenium at the expense of other tissues and decreases whole-bodyselenium by increasing excretion. Conclusion: Sepp1 production by hepatocytes ... | | 2012-01-01 |
103 |
|
Yang, Seung Ook | Construction of a protein-based nanoreactor using charge complementarity | | | 2012 |
104 |
|
Gerig, Guido | Neuro imaging research lab | | | 2012 |
105 |
|
Gondolo, Paolo | Ring-like features in directional dark matter detection | We discuss a novel dark matter signature relevant for directional detection of Weakly Interacting Massive Particles (WIMPs). For heavy enough WIMPs and low enough recoil energies, the maximum of the recoil rate is not in the direction of the average WIMP arrival direction but in a ring around it at ... | | 2012-01-01 |
106 |
|
Gondolo, Paolo | Aberration features in directional dark matter detection | The motion of the Earth around the Sun causes an annual change in the mag-nitude and direction of the arrival velocity of dark matter particles on Earth, in a way analogous to aberration of stellar light. In directional detectors, aberration of weakly interacting massive particles (WIMPs) modulates ... | | 2012-01-01 |
107 |
|
Adler, Frederick R. | A time since recovery model with varying rates of loss of immunity | For many infectious diseases, immunity wanes over time. The majority of SIRS models assume that this loss of immunity takes place at a constant rate. We study temporary immunity within a SIRS model structure if the rate of loss of immunity can depend on the time since recovery from disease.We determ... | | 2012-01-01 |
108 |
|
Mishchenko, Eugene | Resonant finite-size impurities in graphene, unitary limit, and Friedel oscillations | A unitary limit for model point scatterers in graphene is known to reveal low-energy resonances. The same limit could be achieved from hybridization of band electrons with the localized impurity level positioned in the vicinity of the Fermi level. The finite-size defects represent an easier realizat... | | 2012-01-01 |
109 |
|
Mattis, Daniel C. | A contribution to the many-fermion problem | In this work we reexamine the many-fermion problem in arbitrary dimensions. It is shown that in two dimensions or higher, the Hamiltonian of interacting fermions can be separated into individual nonintersecting sectors labeled by the wave-vector q. Within each sector the Hamiltonian maps onto a gene... | | 2012-01-01 |
110 |
|
Adler, Frederick R. | Sputum biomarkers and the prediction of clinical outcomes in patients with cystic fibrosis | Lung function, acute pulmonary exacerbations (APE), and weight are the best clinical predictors of survival in cystic fibrosis (CF); however, underlying mechanisms are incompletely understood. Biomarkers of current disease state predictive of future outcomes might identify mechanisms and provide tre... | | 2012-01-01 |
111 |
|
Boehme, Christoph | Modulation frequency dependence of continuous-wave optically/electrically detected magnetic resonance | Continuous-wave optically and electrically detected magnetic resonance spectroscopy (cwODMR/cwEDMR) allow the investigation of paramagnetic states involved in spin-dependent transitions, like recombination and transport. Although experimentally similar to conventional electron spin resonance (ESR), ... | | 2012-01-01 |
112 |
|
Armentrout, Peter B. | Fragmentation reactions of thiourea- and urea-compounds examined by tandem MS-, energy-resolved CID experiments, and theory | Fragmentation reactions of thiourea- and urea-compounds, which are promising reagents for chemical crosslinking (XL), are investigated in detail by collision-induced dissociation (CID) experiments in a quadrupole ion trap (QIT), energy-resolved CID experiments, and computational modeling. For this s... | | 2012-01-01 |
113 |
|
Armentrout, Peter B. | Infrared multiple photon dissociation spectroscopy of protonated histidine and 4-phenyl imidazole | The gas-phase structures of protonated histidine (His) and the side-chain model, protonated 4-phenyl imidazole (PhIm), are examined by infrared multiple photon dissociation (IRMPD) action spectroscopy utilizing light generated by the free electron laser FELIX. To identify the structures present in t... | | 2012-01-01 |
114 |
|
Armentrout, Peter B. | The simplest b2+ ion: determining its structure from its energetics by a direct comparison of the threshold collision-induced dissociation of protonated oxazolone and diketopiperazine | Energy-resolved collision-induced dissociation of b2 + ions derived from protonated GGG and GAG are compared with that of protonated diketopiperazine (H+DKP). Absolute dissociation cross sections are obtained using a guided ion beam tandem mass spectrometer and analyzed using statistical methods. Th... | | 2012-01-01 |
115 |
|
Olivera, Baldomero M. | Modulation of conotoxin structure and function is achieved through a multienzyme complex in the venom glands of cone snails | Background: Conotoxins can be utilized to investigate enzyme-assisted folding of disulfide-rich peptides. Results: Various ER-resident cone snail enzymes act in concert to accelerate the oxidative folding of conotoxins and modulate their conformation by reconfiguring disulfide connectivities. Conclu... | | 2012-01-01 |
116 |
|
Armentrout, Peter B. | Thermodynamics and mechanisms of protonated diglycine decomposition: a computational study | We present a full computational description of the fragmentation reactions of protonated diglycine (H+GG). Relaxed potential energy surface scans performed at B3LYP/6-31G(d) or B3LYP/6-311+G(d,p) levels are used to map the reaction coordinate surfaces and identify the transition states (TSs) and int... | | 2012-01-01 |
117 |
|
Armentrout, Peter B. | Thermodynamics and mechanisms of protonated diglycine decomposition: a guided ion beam study | We present a full molecular description of fragmentation reactions of protonated diglycine (H+GG) by studying their collision-induced dissociation (CID) with Xe using a guided ion beam tandem mass spectrometer (GIBMS). Analysis of the kinetic energy-dependent CID cross sections provides the 0 K barr... | | 2012-01-01 |
118 |
|
Gondolo, Paolo | The effect of quark interactions on dark matter kinetic decoupling and the mass of the smallest dark halos | The kinetic decoupling of dark matter (DM) from the primordial plasma sets the size of the first and smallest DM halos. Studies of the DM kinetic decoupling have hitherto mostly neglected interactions between the DM and the quarks in the plasma. Here we illustrate their importance using two framewor... | | 2012-01-01 |
119 |
|
Armentrout, Peter B. | Alkali metal cation interactions with 12-crown-4 in the gas phase: revisited | Quantitative interactions of alkali metal cations with the cyclic 12-crown-4 polyether ligand (12C4) are studied. Experimentally, Rb+(12C4) and Cs+(12C4) complexes are formed using electrospray ionization and their bond dissociation energies (BDEs) determined using threshold collision-induced dissoc... | | 2012-01-01 |
120 |
|
Armentrout, Peter B. | Role of methylation on the thermochemistry of alkali metal cation complexes of amino acids: N-methyl proline | Quantitative thermodynamic information is obtained from the study of the gasphase interactions of the alkali metal cation complexes of N-methyl proline (NMP) with Xe using a guided ion beam tandem mass spectrometer (GIBMS). Absolute bond dissociation energies (BDEs) of M+ = Li+, Na+, K+, and Rb+ to ... | | 2012-01-01 |
121 |
|
Gondolo, Paolo | Simple renormalizable flavor symmetry for neutrino oscillations | The recent measurement of a nonzero neutrino mixing angle θ13 requires a modification of the tri-bimaximal mixing pattern that predicts a zero value for it. We propose a new neutrino mixing pattern based on a spontaneously broken A4 flavor symmetry and a type-I seesaw mechanism. Our model allows fo... | | 2012-01-01 |
122 |
|
Rogachev, Andrey | Magnetic-field dependent differential capacitance of polymer diodes | Using admittance spectroscopy, we found that bipolar organic diodes based on pi-conjugated polymer, 2-methoxy-5-(20-ethylhexyloxy), MEH-PPV, have strong divergent contribution to the device differential capacitance. It is positive at low bias voltages, turns negative at intermediate biases, and beco... | | 2012-01-01 |
123 |
|
Sekercioglu, Cagan | Mapping functional traits: comparing bundance and presence-absence estimates at large spatial scales | Efforts to quantify the composition of biological communities increasingly focus on functional traits. The composition of communities in terms of traits can be summarized in several ways. Ecologists are beginning to map the geographic distribution of trait-based metrics from various sources of data,... | | 2012-01-01 |
124 |
|
Rogachev, Andrey | Admittance spectroscopy study of polymer diodes in small magnetic fields | We performed a systematic study of bipolar and unipolar organic diodes based on the p-conjugated polymer, 2-methoxy-5-(20-ethylhexyloxy) (MEH-PPV), using electronic and magneto-transport measurements with magnetic field in the range 0-180mT and admittance spectroscopy in the frequency range 1 Hz<f<1... | | 2012-01-01 |
125 |
|
Saam, Brian | Asymptotic and intermediate long-time behavior of nuclear free induction decays in polycrystalline solids and powders | Free induction decay (FID) measured by nuclear magnetic resonance (NMR) in a polycrystalline solid is the isotropic average of the FIDs for individual single crystallites. It has been recently proposed theoretically and verified experimentally that the long-time behavior of single-crystal FIDs has t... | | 2012-01-01 |