|
|
Creator | Title | Description | Subject | Date |
151 |
|
Golden, Kenneth M. | Bounds on the complex permittivity of sea ice | An analytic method for obtaining bounds on effective properties of composites is applied to the complex permittivity e* of sea ice. The sea ice is assumed to be a two-component random medium consisting of pure ice of permittivity e1, and brine of permittivity e2. The method exploits the properties ... | Brine; Properties; Geometry | 1995 |
152 |
|
Wu, Yong-Shi | BPS R-balls in N = 4 SYM on R × S3, quantum Hall analogy and AdS/CFT holography | In this paper, we propose a new approach to study the BPS dynamics in N = 4 supersymmetric U(N) Yang-Mills theory on R × S3, in order to better understand the emergence of gravity in the gauge theory. Our approach is based on supersymmetric, space-filling Q-balls with R-charge, which we call R-ball... | | 2006-06-01 |
153 |
|
Lupton, John Mark | Bragg scattering from periodically microstructured light emitting diodes | We present a simple method of generating a periodic wavelength scale structure in the optically active layer of a light emitting diode. This is achieved by solution deposition of a light emitting polymer on top of a corrugated substrate. The periodic structure allows waveguide modes normally trapped... | Bragg scattering; Periodic wavelength scale structure | 2000 |
154 |
|
Wu, Yong-Shi | Braid group and anyons on a cylinder | In this paper we present a careful reexamination of anyons on a cylinder (or annulus), starting from the braid-group analysis. Proper attention is paid to the topological features arising from the existence of noncontractible loops. The rule for putting anyons on a square lattice has to be modified ... | Braid group; Annulus | 1991-02 |
155 |
|
Wu, Yong-Shi | Braid group, gauge invariance, and topological order | Topological order in two-dimensional systems is studied by combining the braid group formalism with a gauge invariance analysis. We show that flux insertions (or large gauge transformations) pertinent to the toroidal topology induce automorphisms of the braid group, giving rise to a unified algebrai... | Braid group; Topological order; Zero temperature; Two-dimensional systems | 2006-07 |
156 |
|
Truong, Thanh | Branching ratio and pressure dependent rate constants of multichannel unimolecular decomposition of gas-phase ?-HMX: an ab initio dynamics study | The dynamics of the initial thermal decomposition step of gas-phase ?-HMX is investigated using the master equation method. Both the NO2 fission and HONO elimination channels were considered. The structures, energies, and Hessian information along the minimum energy paths (MEP) of these two channels... | Thermal decomposition; HMX | 2001 |
157 |
|
Wu, Yong-Shi | Brane creation in M(atrix) theory | We discuss, in the context of M(atrix) theory, the creation of a membrane suspended between two longitudinal five-branes when they cross each other. It is shown that the membrane creation is closely related to the degrees of freedom in the off-diagonal blocks which are related via dualities to the ... | | 1998-02 |
158 |
|
Mishchenko, Eugene | Breached superfluidity via p-wave coupling | Anisotropic pairing between fermion species with different Fermi momenta opens two-dimensional areas of gapless excitations, thus producing a spatially homogeneous state with coexisting superfluid and normal fluids. This breached pairing state is stable and robust for arbitrarily small mismatch and ... | Spin-orbit coupling; Gapless excitations; Cooper instability | 2005-03 |
159 |
|
Lupton, John Mark | Bright electroluminescence from a conjugated dendrimer | Photoluminescence and electroluminescence (EL) from a conjugated dendrimer consisting of three distyrylbenzene units linked by a central nitrogen atom as core and meta-linked biphenyl units as dendrons were investigated. The conjugated dendrimer emits green light and shows photoluminescence quantum ... | Conjugated dendrimer | 2002 |
160 |
|
Golden, Kenneth M. | Brine percolation and the transport properties of sea ice | Sea ice is distinguished from many other porous composites, such as sandstones or bone, in that its microstructure and bulk material properties can vary dramatically over a small temperature range. For brine-volume fractions below a critical value of about 5%, which corresponds to a critical tempera... | Brine volume; Percolation theory; Connectedness properties | 2001 |
161 |
|
Golden, Kenneth M. | Broad spectral, interdisciplinary investigation of the electromagnetic properties of sea ice | This paper highlights the interrelationship of research completed by a team of investigators and presented in the several individual papers comprising this Special Section on the Office of Naval Research (ONR), Arlington, VA, Sponsored Sea Ice Electromagnetics Accelerated Research Initiative (ARI). | Scattering; Radiation; EM | 1998 |
162 |
|
Poulter, Charles Dale; Jiang, Yunfeng | BTS1 encodes a geranylgeranyl diphosphate synthase in Saccharomyces cerevisiae | Protein prenylation utilizes different types of isoprenoids groups, namely farnesyl and geranylgeranyl, to modify proteins. These lipophilic moieties attach to carboxyl-terminal cysteine residues to promote the association of soluble proteins to membranes. Most prenylated proteins are geranylgeranyl... | Amino Acid Sequence; Cloning, Molecular; Gene Expression | 1995-09-15 |
163 |
|
Ehleringer, James R. | Burning coal seams in southern Utah: a natural system for studies of plant responses to elevated CO2 | In the Burning Hills and Smoky Mountains of southern Utah (USA), coal deposits exposed to the surface have been ignited by lightning and have been burning for periods of years to over a century. We examined one of these sites, where the below-ground combustion of this low-sulfur coal releases gases ... | Coal fires; Elevated CO2; Isotope ratios; Atriplex confertifolia; Salsola iberica; Gutierrezia sarothrae | 1997 |
164 |
|
DeTar, Carleton | B̄→D*ℓν̄ form factor at zero recoil from three-flavor lattice QCD: a model independent determination of [Vcb] | We present the first lattice QCD calculation of the form factor for B→ D* lv with three flavors of sea quarks. We use an improved staggered action for the light valence and sea quarks (the MILC configurations), and the Fermilab action for the heavy quarks. The form factor is computed at zero recoi... | Staggered quarks | 2009-01 |
165 |
|
DeTar, Carleton | B→πlν semileptonic form factor from three-flavor lattice QCD: a model-independent determination of [Vub] | We calculate the form factor f+(q2) for B-meson semileptonic decay in unquenched lattice QCD with 2 + 1 flavors of light sea quarks. We use Asqtad-improved staggered light quarks and a Fermilab bottom quark on gauge configurations generated by the MILC Collaboration. We simulate with several light... | Semileptonic decay | 2009-03 |
166 |
|
Armentrout, Peter B. | C+(2P) + H2(D2,HD)→CH+(CD+) + H(D). I. Reaction cross sections and kinetic isotope effects from threshold to 15 eV c.m. | Total cross sections for the reactions of carbon (1 + ) ions with isotopic molecular hydrogen (H2, D2 , and HD) to form methyliumylidene (CH+ and C D + ) have been measured using guided ion beam techniques. Cross sections are reported as a function of the translational energy of the reactants fro... | Ion-molecule reactions; Isotope effects; Translational energy; Threshold behavior; Endothermic reactions | 1986 |
167 |
|
Armentrout, Peter B. | C+(2P)+H2(D2,HD)→CH+(CD+)+H(D). I. Reaction cross sections and kinetic isotope effects from threshold to 15eV c.m. | Total cross sections for the reactions of carbon (1 + ) ions with isotopic molecular hydrogen (H2, D2, and HD) to form methyliumylidene (CH+ and CD+) have been measured using guided ion beam techniques. Cross sections are reported as a function of the translational energy of the reactants from th... | Methyliumylidene; Endothermic reactions; Isotope effect; Threshold energy | 1986 |
168 |
|
Borodai, Anastasia S. | C-F bond activation | Activation of Carbon-Fluorine Bonds in 2', 3', 4', 5', 6'-Pentafluoroacetophenone through a Transition Metal Complex- Manganese Pentacarbonyl | Carbon; Fluorine; Bond; Activation | 2014-05-30 |
169 |
|
Wu, Yong-Shi | C-functions of noncommutative Yang-Mills theory from holography | In this paper we study non-commutative Yang-Mills theory (NCYM) through its gravity dual. First it is shown that the gravity dual of an NCYM with self-dual θ-parameters has a Lagrangian in the form of five-dimensional dilatonic gravity. Then we use the de-Boer-Verlinde-Verlinde formalism for holog... | | 2000-05-01 |
170 |
|
Poulter, Charles Dale | CaaX proteases, Afc1p and Rce1p, have overlapping but distinct substrate specificities | Many proteins that contain a carboxyl-terminal CaaX sequence motif, including Ras and yeast a-factor, undergo a series of sequential posttranslational processing steps. Following the initial prenylation of the cysteine, the three C-terminal amino acids are proteolytically removed, and the newly fo... | Proteins; Enzymes; Hydrophobic | 2000 |
171 |
|
Jorgensen, Erik | Caenorhabditis elegans gene unc-25 encodes glutamic acid decarboxylase and is required for synaptic transmission but not synaptic development | The neurotransmitter GABA has been proposed to play a role during nervous system development. We show that the Caenorhabditis elegans gene unc-25 encodes glutamic acid decarboxylase (GAD), the GABA biosynthetic enzyme. unc-25 is expressed specifically in GABAergic neurons. Null mutations in unc-25... | | 1999 |
172 |
|
Jorgensen, Erik | Caenorhabditis elegans rab-3 mutant synapses exhibit impaired function and are partially depleted of vesicles | Rab molecules regulate vesicular trafficking in many different exocytic and endocytic transport pathways in eukaryotic cells. In neurons, rab3 has been proposed to play a crucial role in regulating synaptic vesicle release. To elucidate the role of rab3 in synaptic transmission, we isolated and cha... | | 1997 |
173 |
|
Jorgensen, Erik | Caenorhabditis elegans unc-49 locus encodes multiple subunits of a heteromultimeric GABA receptor | Ionotropic GABA receptors generally require the products of three subunit genes. By contrast, the GABA receptor needed for locomotion in Caenorhabditis elegans requires only the unc-49 gene. We cloned unc-49 and demonstrated that it possesses an unusual overlapping gene structure. | | 1999 |
174 |
|
Olivera, Baldomero M. | Calcium channel antagonists: ω-conotoxin defines a new high affinity site | The ω-conotoxins, a class of Ca2+ channel antagonists from fish-hunting marine snails, have recently been described (Olivera, B. M., McIntosh, J. M., Zeikus, R., Gray, W. R., Varga, J., Rivier, J., de Santos, V., and Cruz, L. J. (1985) Science, 230, 1338-1343). One of these peptide neurotoxins... | Conotoxins; Calcium channels; Synaptosomes; Neurotoxins | 1986 |
175 |
|
Symko, Orest George | Calibration of SQUID magnetometer for dilute alloy studies | A SQUID magnetometer used in the study of dilute magnetic alloys or other weak magnetic systems can be calibrated by using the nuclear paramagnetism of aluminum metal. This material is useful as a calibration standard since magnetic impurities such as Fe and Mn form no local moment. This calibration... | SQUID magnetometer | 1979 |