|
|
Creator | Title | Description | Subject | Date |
201 |
|
Mishchenko, Eugene | Charge response function and a novel plasmon mode in graphene | Polarizability of noninteracting 2D Dirac electrons has a 1 1 / √qv-ω singularity at the boundary of electron-hole excitations. The screening of this singularity by long-range electron-electron interactions is usually treated within the random phase approximation. The latter is exact only in the ... | Excitons; Random phase approximation | 2008-04 |
202 |
|
Miller, Joel Steven | Charge transfer complexes of 2,4,6-tricyano-s-triazine with tetrathiafulvalene (TTF) and N,N,N' ,N'-tetramethyl-p-phenylenediamine (TMPD) | Reaction of 2,4,6-tricyano-s-triazine (TCT) with tetrathiafulvalene (TTF) and N,N,N',N'-tetramethylp-phenylenediamine (TMPD) leads to 1 : 1 charge transfer complexes. The crystal structures of the TTF[TCT], as well as the decomposition product due to hydrolysis of the [TMPD][TCT], i.e. HTMPD]+[2,4-d... | Electron; Solution; Hydrolysis | 2002 |
203 |
|
DeTar, Carleton | Charmed-meson decay constants in three-flavor lattice QCD | We present the first lattice QCD calculation with realistic sea quark content of the D+-meson decay constant fD+. We use the MILC Collaboration's publicly available ensembles of lattice gauge fields, which have a quark sea with two flavors (up and down) much lighter than a third (strange). We obtain... | Flavor physics; Charmed meson; Staggered fermions | 2005-09 |
204 |
|
Coley, Phyllis D. | Chemical and bioactive natural products from microthyriaceae sp., an endophytic fungus from a tropical grass | In screening for natural products with antiparasitic activity, an endophytic fungus, strain F2611, isolated from above-ground tissue of the tropical grass Paspalum conjugatum (Poaceae) in Panama, was chosen for bioactive principle elucidation. Cultivation on malt extract agar (MEA) followed by bioas... | | 2014-01-01 |
205 |
|
Blair, David F. | Chemical and spectroscopic evidence for the formation of a ferryl Fea3 intermediate during turnover of cytochrome c oxidase | When partially reduced cytochrome c oxidase samples are reoxidized with dioxygen, an EPR-silent dioxygen intermediate, which is at the three-electron level of dioxygen reduction, is trapped at the dioxygen reduction site. The intermediate has novel spectral features at 580 and 537 nm. Combined op... | Cytochrome c oxidase; EPR; Fea3 intermediate; Reduction | 1986 |
206 |
|
Sekercioglu, Cagan | Chewing lice (phthiraptera) found on songbirds (Passeriformes) in Turkey | Objective: This study was performed to detect chewing lice species found on the songbirds at Lake Kuyucuk bird ringing station in the Kars province located in eastern Turkey. Methods: Chewing lice were collected from songbirds captured between September and October 2009. Fifty-one birds belonging t... | | 2011-01-01 |
207 |
|
Sekercioglu, Cagan | Chewing lice (phthiraptera) species found on birds along the Aras River, lgdir, Eastern Turkey | Chewing lice were sampled from the birds captured and ringed between September-October 2009 at the Aras River (Yukarı Çıyrıklı, Tuzluca, Iğdır) bird ringing station in eastern Turkey. Eighty-one bird specimens of 23 species were examined for lice infestation. All lice collected from the birds... | | 2011-01-01 |
208 |
|
Sekercioglu, Cagan | Chewing lice (Phthiraptera) species found on Turkish shorebirds (Charadriiformes) | Approximately 4.500 species of lice have been so far described, with about 4.000 species seen on birds and with 3.000 species in the suborder Ischnocera 1. There are 465 bird species so far recorded in Turkey and the actual total is likely to exceed 500 species. However, the chewing lice fauna of th... | | 2010-01-01 |
209 |
|
Wu, Yong-Shi | Chiral bosonization and local Lorentz-invariant actions for chiral bosons | We formulate a geometrical theory of self-dual scalar fields in two dimensions with a local Lorentz-invariant action. Path-integral quantization is used to derive chiral bosonization by demonstrating equivalence of correlation functions of currents and energy-momentum tensors in our theory with thos... | Bosonization; String theory; Weyl fermions | 1988-06 |
210 |
|
DeTar, Carleton | Chiral logs with staggered fermions | We compute chiral logarithms in the presence of "taste" symmetry breaking of staggered fermions. The lagrangian of Lee and Sharpe is generalized and then used to calculate the logs in π and K masses. We correct an error in Ref. [1]; the issue turns out to have implications for the comparison with ... | Staggered fermions; Chiral logs | 2003-05 |
211 |
|
Bohs, Lynn A. | Chloroplast DNA phylogeny of Solanum sect on Las ocarpa | Solanum section Lasiocarpa includes about a dozen species with a center of diversity in the NewWorld tropics. Solanum lasiocarpum and S. repandum (sometimes considered to be conspecific as S. ferox) have an Old World distribution in Asia and the Pacific Islands. Several species in this section produ... | Solanum; trn; Lasiocarpa | 2004 |
212 |
|
Capecchi, Mario R. | Choose your target. | The technology of modifying endogenous genes has recently been extended from mice to Drosophila and sheep. Concurrently, genomic sequencing is uncovering thousands of previously uncharacterized genes. Armed with today's technologies, what are our best options for delineating the functions of these n... | Animals; Mice; Sheep | 2000-09-13 |
213 |
|
Golden, Kenneth M. | Classical transport in quasiperiodic media | Abstract. Classical transport coefficients such as the effective conductivity or diffusivity of a quasiperiodic medium were observed [1] to depend discontinuously on the frequencies of the quasiperiodicity. For example, for a one-dimensional medium with a potential V(x) = cosx + coskx , the effecti... | Transport; Diffusion; Random | 1991 |
214 |
|
Vardeny, Zeev Valentine; Ehrenfreund, Eitan A. | Classification of disorder and extrinsic order in polymers by resonant Raman scattering | Resonant Raman scattering is used to quantify the effect of disorder and extrinsic order on Peierls systems such as (CH)X . We introduce "X plots" in which the phonon and gap distribution are related and characterize the system by the functional dependence of the gap 2 A on the coupling X. For c/s-r... | Peierls systems | 1985-01 |
215 |
|
Capecchi, Mario R. | Cleft palate in mice with a targeted mutation in the gamma-aminobutyric acid-producing enzyme glutamic acid decarboxylase 67. | The functions of neurotransmitters in fetal development are poorly understood. Genetic observations have suggested a role for the inhibitory amino acid neurotransmitter gamma-aminobutyric acid (GABA) in the normal development of the mouse palate. Mice homozygous for mutations in the beta-3 GABAA rec... | Animals, Newborn; Crosses, Genetic | 1997-10-14 |
216 |
|
Golden, Kenneth M. | Climate change and the mathematics of transport in sea ice | As the boundary layer between the ocean and atmosphere in the polar regions, sea ice is a critical component of the global climate system. As temperatures on Earth have warmed, the Arctic sea ice pack in particular has exhibited a dramatic decline in its summer extent. Indeed, the polar sea-ice pack... | Polar ice; Fluid flow; Complex permittivity | 2009 |
217 |
|
Gondolo, Paolo | Clumpy neutralino dark matter | We investigate the possibility to detect neutralino dark matter in a scenario in which the galactic dark halo is clumpy. We find that under customary assumptions on various astrophysical parameters, the antiproton and continuum γ-ray signals from neutralino annihilation in the halo put the strong... | Neutralinos; Clumpiness | 1999-01 |
218 |
|
Miller, Joel Steven | Cluster glass state and photoinduced effects on the freezing dynamics in KxCo[Fe(CN)6]y.ZH2O (x-0.16,y-0.72, z-4.4) | The magnetic properties and photoinduced magnetization of a Prussian blue analog, KxCo[Fe(Cn)6]y•ZH2O (x-0.16, y-0.72, z-4.4) were systematically studied. The frequency dependence of the linear ac susceptibility, the irreversibility in the field-cooled/ zero-field-cooled magnetization (MFC /MZFC)... | Hexacyanide; Illumination; Temperatures | 2000 |
219 |
|
Armentrout, Peter B. | Cobalt carbene ion: reactions of Co+ with C2H4, cyclo-C3H6 and cyclo-C2H4O | An ion beam apparatus is employed to study the formation of the cobalt carbene ion, CoCH2+. This ion is produced in the endothermic reaction of cobalt ions with ethene and cyclopropane and in an exothermic reaction with ethylene oxide. A model is proposed to account for the dependence of experimenta... | Cobalt carbine; Ion beam; Bond dissociation energy; Reaction cross section; Endothermic reactions | 1981 |
220 |
|
Yamaguchi, Ayako | Coding rate and duration of vocalizations of the frog , Xenopus laevis | Vocalizations involve complex rhythmic motor patterns, but the underlying temporal coding mechanisms in the nervous system are poorly understood. Using a recently developed whole-brain preparation from which "fictive" vocalizations are readily elicited in vitro, we investigated the cellular basis of... | | 2012-08-29 |
221 |
|
Clayton, Dale H. | Coevolutionary history of ecological replicates: comparing phylogenies of wing and body lice to Columbiform hosts | Phylogenies depict the history of speciation for groups of organisms. Comparing the phylogenies of interacting groups can reveal instances of tandem speciation, or "cospeciation" (Brooks and McLennan, 1991; Hoberg et al., 1997; Paterson and Gray, 1997). Understanding the conditions under which cosp... | Feather lice; Wing lice; Body lice; Cospeciation | 2003 |
222 |
|
Vardeny, Zeev Valentine | Coherent phonon generation and detection by picosecond light pulses | Using the picosecond pump and probe technique we have detected oscillations of photoinduced transmission and reflection in thin films of α-As2Te3 and cis-polyacetylene. These oscillations are due to the generation and propagation of coherent acoustic phonons in the film. We discuss the generation ... | a-As2Te3; Cis-polyacetylene; Pump and probe technique | 1984-09 |
223 |
|
Vardeny, Zeev Valentine; Raikh, Mikhail E. | Coherent random lasing: trapping of light by the disorder | Recent discovery of the coherent lasing from various disordered materials adds a new dimension to the conventional physics of light propagation in multiply scattering media. It suggests that in the situation, when the propagation of light is diffusive on average, the coherent feedback can be provid... | Coherent random lasing; Coherent lasing; Disorder; Disordered materials; Random lasers; Random resonators; Power Fourier transform; Light propagation | 2004 |
224 |
|
Vardeny, Zeev Valentine | Coherent umklapp scattering of light from disordered photonic crystals | A theoretical study of the coherent light scattering from disordered photonic crystals is presented. In addition to the conventional enhancement of the reflected light intensity into the backscattering direction, the so-called coherent backscattering (CBS), the periodic modulation of the dielectri... | Coherent umklapp scattering; Disordered photonic crystals; Coherent backscattering; Bragg | 2001-05 |
225 |
|
Coley, Phyllis D. | Coibanoles, a new class of meroterpeniods produced by pycnoporus sanguineus | Three new terpenoids of mixed biosynthetic origin were isolated from the culture filtrate of the endophytic fungus Pycnoporus sanguineus. Their structures were determined by extensive spectroscopic analyses. We have named these tricyclic and tetracyclic metabolites ?coibanoles A?C? in reference to... | | 2012 |