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Creator | Title | Description | Subject | Date |
| 251 |
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Wu, Yong-Shi | One-loop shift in noncommutative Chern-Simons coupling | In this paper we study the one-loop shift in the coupling constant in a noncommutative pure U(N) Chern-Simons gauge theory in three dimensions. The one-loop shift is shown to be a constant proportional to N, independent of noncommutativity parameters, and non-vanishing for U(1) theory. Possible phy... | | 2001-01 |
| 252 |
 |
Inagaki, Ryota T.; Raghuraman, Shrlnlvasan; Chase, Kevin; Steele, Theresa; Zornik, Erilk; Olivera, Baldomero; Yamaguchi, Ayako | Molecular characterization of frog vocal neurons using pharmacological constellation. | | constellation pharmacology; motor programs; parabrachial nucleus; premotor neurons; vocalizations | 2020 |
| 253 |
 |
Kelley, Darcy B.; Elliott, Taffeta M.; Evans, Ben J.; Evans, Ben J.; Hall, Ian C.; Rhodes, Heather J.; Yamaguchi, Ayako; Zornik, Erik | Probing forebrain to hindbrain circuit functions in Xenopus | The vertebrate hindbrain includes neural circuits that govern essential functions including breathing, blood pressure and heart rate. Hindbrain circuits also participate in generating rhythmic motor patterns for vocalization. In most tetrapods, sound production is powered by expiration and the circu... | fictive respiration; vocalization; pattern generation | 2016 |
| 254 |
 |
Gerton, Jordan | Scattering of plasmons at the intersection of two metallic nanotubes: implications for tunneling | We study theoretically the plasmon scattering at the intersection of two metallic carbon nanotubes. We demonstrate that, for a small angle of crossing θ « 1, the transmission coefficient is an oscillatory function of θ / λ, where ω is the interaction parameter of the Luttinger liquid in an ind... | | 2008-12 |
| 255 |
 |
Golden, Kenneth M. | Forward electromagnetic scattering models for sea ice | Recent advances in forward modeling of the electromagnetic scattering properties of sea ice are presented. In particular, the principal results include the following: 1) approximate calculations of electromagnetic scattering from multilayer random media with rough interfaces, based on the distorte... | Polar ice; Electromagnetic scattering; Electromagnetic scattering forward problems; Multilayer random media; Dielectric materials; Nonhomogeneous media; Remote sensing | 1998 |
| 256 |
 |
Vardeny, Zeev Valentine | Resonant-Raman-scattering studies of disorder in solution-cast polydiacetylene films | The disorder in polydiacetylene films cast from solution is studied by Raman scattering under preresonance and resonance conditions in both Stokes and anti-Stokes configurations. The disorder-induced inhomogeneities in the exciton energy levels and the strongly coupled vibrations cause strong disper... | Polydiacetylene films; Stokes configuration | 1990-08 |
| 257 |
 |
Lupton, John Mark | Time delayed electroluminescence overshoot in single layer polymer light-emitting diodes due to electrode luminescence quenching | We investigate the transient response of single layer polymer light-emitting diodes (LEDs) based on poly[2-methoxy, 5-(2'ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV). An electroluminescence overshoot is observed between 1 and 2 μs after turning off the voltage pulse, depending on temperature... | MEH-PPV; Delayed electroluminescence; Overshoot; Single layer; Electrode luminescence quenching; Transient responses | 2001 |
| 258 |
 |
Gondolo, Paolo | Implications of muon anomalous magnetic moment for supersymmetric dark matter | The anomalous magnetic moment of the muon has recently been measured to be in conflict with the standard model prediction with an excess of 2.6s. Taking the excess at face value as a measurement of the supersymmetric contribution, we find that at 95% confidence level it imposes an upper bound of 50... | Magnetic moment; Neutralinos | 2001-05 |
| 259 |
 |
Armentrout, Peter B. | Effect of kinetic and electronic energy on the reactions of Mn+ with H2, HD and D2 | Reactions of several electronic states of Mn+ with H2, HD, and D2 have been examined using guided ion beam mass spectroscopy. The excitation function for the ground state of Mn+ ( 75) has two regions: one of very low reactivity at threshold and another more efficient pathway at higher energies. In ... | Ion-molecule reactions; Translational energy; Bond energy; Threshold behavior; Endothermic reactions; Metal ions; Manganese; Hydrogen | 1986 |
| 260 |
 |
Vardeny, Zeev Valentine | Symmetric light emitting divices from poly(p-di ethynylene phenylene) (p-di phenylene vinylene) derivatives | Light emitting devices were fabricated from 2,5-dialkoxy derivatives of poly(p-di ethynylene phenylene-p-di phenylene vinylene) (PDEPDPV) sandwiched between indium tin oxide (ITO) and Al. The current-voltage (Iel-V) curve, electroluminescence (EL) intensity-voltage (IEL-V) curve, and the EL spectra ... | Poly(p-di ethynylene phenylene); PPV; Pi-conjugated polymers | 1995 |
| 261 |
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Dawson, Kyle | Radiation tolerance of high-resistivity LBNL CCDs | Thick, fully-depleted p-channel charge-coupled devices (CCDs) have been developed at the Lawrence Berkeley National Laboratory (LBNL). These CCDs have several advantages over conventional n-channel CCDs, including enhanced quantum efficiency and reduced fringing at near-infrared wavelengths, a smal... | P-Channel CCDs; Astrophysics instrumentation; Space instrumentation; SNAP satellite; Space-based telescopes | 2006-10 |
| 262 |
 |
Sperry, John S. | Shoot dieback during prolonged drought in Ceanothus (Rhamnaceae) chaparral of California: a possible case of hydraulic failure | Progressive diebacks of outer canopy branchlets of Ceanothus crassifolius were repeatedly observed after rainless periods up to 9 mo in duration in the Santa Monica Mountains of southern California. Mean xylem pressures of branchlets near the end of drought were as low as -11.2 MPa (N = 22) with a m... | Water relations; xylem cavitation; water-stress-induced loss | 2002 |
| 263 |
 |
Bohs, Lynn A. | Three-gene phylogeny of the genus Solanum (Solanaceae) | Solanum, with approximately 1,500 species, is the largest genus in the Solanaceae and includes economically important species such as the tomato, potato, and eggplant. In part due to its large size and tropical center of diversity, resolving evolutionary relationships across Solanum as a whole has ... | ndhF; trnT-F; Waxy; Solanum; Cyphomandra | 2007 |
| 264 |
 |
Capecchi, Mario R. | Developmental defects of the ear, cranial nerves and hindbrain resulting from targeted disruption of the mouse homeobox gene Hox-1.6. | Gene targeting in mouse embryo-derived stem cells has been used to generate mice with a disruption in the homeobox gene Hox-1.6. Mice heterozygous at the Hox-1.6 locus appear normal, whereas Hox-1.6-/Hox-1.6- mice die at or shortly after birth. These homozygotes exhibit profound defects in the forma... | Chromosome Mapping; Genetic Vectors; Mice, Inbred C57BL | 2002-06-27 |
| 265 |
 |
Clayton, Dale H. | Revision of the chewing louse genus Formicaphagus (Phthiraptera: Philopteridae) from Neotropical Antbirds and Gnateaters (Aves: Passeriformes) | Examination of specimens of the 15 recognized species of Formicaphagus resulted in 6 new synonymies: F. laemostictus, F. latifrons, and F. peruvianus are junior synonyms of F. picturatus; F. huilae of F. angustifrons; and F. bolivianus and F. thoracicus of F. minutus. Two new species are described f... | Formicaphagus; Formicaphagus arnoldi; Formicaphagus donpetersi; Antbirds; Gnateaters | 1996 |
| 266 |
 |
Rogachev, Andrey | Superconducting properties of polycrystalline Nb nanowires templated by carbon nanotubes | Continuous Nb wires, 7-15 nm in diameter, have been fabricated by sputter-coating single fluorinated carbon nanotubes. Transmission electron microscopy revealed that the wires are polycrystalline, having grain sizes of about 5 nm. The critical current of wires thicker than ~12 nm is very high (107 A... | Polycrystalline Nb; Carbon nanotubes; Langer-Ambegaokar-McCumber-Halperin; Phase slips | 2003 |
| 267 |
 |
Vardeny, Zeev Valentine | Evidence for excimer photoexcitations in an ordered ?-conjugated polymer film | We report pressure-dependent transient picosecond and continuous-wave photomodulation studies of disordered and ordered films of 2-methoxy-5-(2-ethylhexyloxy) poly(para-phenylenevinylene). Photoinduced absorption (PA) bands in the disordered film exhibit very weak pressure dependence and are assign... | | 2011 |
| 268 |
 |
Vardeny, Zeev Valentine | Spectral analysis of near threshold random lasers | Emission spectra from random lasing systems typically have numerous narrow resonant lines. When excited very near to the laser threshold there are fewer resonant lines which clarify the emission spectrum analysis. We studied three different random lasing systems including ?-conjugated polymer films... | | 2012 |
| 269 |
 |
Morse, Michael David | Resonant two-photon ionization spectroscopy of jet-cooled NiPt | Resonant two-photon ionization spectroscopy of jet-cooled NiPt has been used to investigate the possibility of <f-electron contributions to the bonding in this species. Based on an abrupt onset of predissociation, the bond strength of NiPt is assigned as D0 (NiPt) = 2.798 ? 0.003 eV. Comparisons of ... | | 1989 |
| 270 |
 |
DeTar, Carleton | Light hadron spectrum - MILC results with the Kogut-Susskind and Wilson actions* | We present the current status of our ongoing calculations of the light hadron spectrum with both Kogut-Susskind (KS) and Wilson quarks in the valence or quenched approximation. We discuss KS quarks first and find that the chiral extrapolation is potentially the biggest source of systematic error. F... | Staggered quarks; Hadron spectrum; Kogut-Susskind quarks; Wilson quarks; Chiral extrapolation | 1998-01 |
| 271 |
 |
Wu, Yong-Shi | Quantum group, Bethe ansatz equations, and Bloch wave functions in magnetic fields | The wave functions for a two-dimensional Bloch electron in uniform magnetic fields at the mid-band points are studied by exploiting a connection to the quantum group Uq(sl2): A linear combination of its generators gives the Hamiltonian. We apply both analytic and numerical methods to obtain and an... | Bloch electron | 1996-04 |
| 272 |
 |
Davidson, Diane W. | Granivory in the Chihuahuan Desert: interactions within and between trophic levels | We investigated the effects of Chihuahuan Desert granivores on three seasonal classes of plant resource species, the effects of these resource classes on one another, and the ways in which interactions through plant resources affect the abundances of seed consumers. At our study site, three seasona... | Annual plant; Ant; Competition; Community; Desert; Ecosystem structure; Experiment; Granivore; Indirect interaction; Rodent; Population cycles; Seed predation | 1985 |
| 273 |
 |
Capecchi, Mario R. | Regionally restricted developmental defects resulting from targeted disruption of the mouse homeobox gene hox-1.5. | Gene targeting in mouse embryo-derived stem cells has been used to disrupt the homeobox gene hox-1.5. Mice heterozygous at the hox-1.5 locus appear normal, whereas hox-1.5-/hox-1.5- mice die at or shortly after birth. These homozygotes are athymic, aparathyroid, have reduced thyroid and submaxillary... | Abnormalities, Multiple; Animals, Newborn; Arteries; Bone and Bones; Cartilage; Esophagus; Gene Expression; Heart Defects, Congenital; Organ Specificity; Parathyroid Glands; Pharynx; Thymus Gland; Thyroid Gland; Trachea | 1991-04-11 |
| 274 |
 |
Lupton, John Mark | Intrinsic room-temperature electrophosphorescence from a π-conjugated polymer | Electrically induced phosphorescence from a poly(para-phenylene) ladder-type polymer is observed for the first time and characterized using time resolved spectroscopy. Short-lived phosphorescence is also observed in gated fluorescence spectra and is found to be quenched reversibly by oxygen. Therm... | pi-conjugated polymers; Electrophosphorescence; Ladder-type polymer; Gated fluorescence spectra | 2002-09 |
| 275 |
 |
Boehme, Christoph | Triplet recombination at Pb centers and its implications for capture cross sections | Pulsed electrically detected magnetic resonance measurements are presented showing that Pb centers at the crystalline silicon (c-Sid) (111) to silicon dioxide sSiO2d interface can cause recombination of strongly coupled spin pairs in singlet and triplet configurations. The implication of these find... | Silicon interfaces | 2005 |
