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Creator | Title | Description | Subject | Date |
376 |
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Morse, Michael David | Dispersed fluorsecence spectroscopy of AINi, NiAu, and PtCu | Dispersed fluorescence studies of AlNi, NiAu, and PtCu have been performed, providing spectroscopic information about the ground and low-lying excited electronic states. Vibrational frequencies are reported for the ground X 2?5/2 state of all three molecules. In the case of AlNi, fluorescence to all... | | 2003 |
377 |
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Morse, Michael David | Dispersed fluorsecence spectroscopy of jet-cooled AgAu and Pt? | Dispersed fluorescence spectroscopy has been used to study jet-cooled AgAu and Pt2 . Fluorescence resulting from the excitation of five bands of the A?X 1?+ system of AgAu was dispersed, and 51 measured ground state vibrational levels were fit to provide ground state vibrational constants of ?"e=198... | | 2001 |
378 |
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Vardeny, Zeev Valentine; Ehrenfreund, Eitan A. | Dispersion of resonant Raman scattering in ∏-conjugated polymers: role of the even parity excitons | Resonant Raman scattering dispersion of the most strongly coupled phonon frequencies with the excitation laser photon energy is measured in terms of a dispersion rate parameter D and quantified in a variety of p conjugated polymer films. D was found to be large in nonluminescent polymers and small i... | Resonant raman scattering; Even parity excitons | 1997-09 |
379 |
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Coley, Phyllis D. | Disponibilidad de recursos y defensas de las plantas frente al herbivorismo | El grado de herbivorismo y la eficacia de las defensas muestran amplias variaciones en las especies de plantas. La disponibilidad de recursos en el ambiente se propone como el mayor determinante de la cantidad y tipo de defensas de las plantas. Cuando los recursos son limitados, las plantas de cre... | Defensas; Plantas; Herbivorismo | 2007 |
380 |
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Capecchi, Mario R.; Mansour, Suzanne L.; Thomas, Kirk R. | Disruption of the proto-oncogene int-2 in mouse embryo-derived stem cells: a general strategy for targeting mutations to non-selectable genes. | Gene targeting--homologous recombination of DNA sequences residing in the chromosome with newly introduced DNA sequences--in mouse embryo-derived stem cells promises to provide a means to generate mice of any desired genotype. We describe a positive nd negative selection procedure that enriches 2,00... | Animals; Clone Cells; Restriction Mapping; Stem Cells | 1988-11-24 |
381 |
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Armentrout, Peter B. | Dissociative charge transfer reactions of Ar+, Ne+, and He+ with CF4 from thermal to 50 eV | Guided ion-beam techniques are used to measure the cross sections for reaction of CF4 with Ar+, Ne+, and H e + from thermal to 50 eV. Dissociative charge transfer followed by successive loss of F atoms are the major processes observed. Only CFx+ (x = 1,2,3) products are observed in the reactions of ... | Ion-molecule reactions; Transfer reactions; Carbon tetrafluoride; Rare gas ions; Exothermic reactions; Endothermic reactions; Plasma systems | 1990 |
382 |
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Yamaguchi, Ayako | Distinct neural control of vocal phases in frog calls | This poster describes how the connections within the central vocal pathways of African clawed frogs are responsible for coordinating distinct part of their calls. | Vocalizations; Central pattern generators, Motor programs | 2013 |
383 |
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Olivera, Baldomero M. | Distinction among neuronal subtypes of voltage-activated sodium channels by μ-conotoxin PIIIA | The functional properties of most sodium channels are too similar to permit identification of specific sodium channel types underlying macroscopic current. Such discrimination would be particularly advantageous in the nervous system in which different sodium channel family isoforms are coexpressed i... | Conotoxins; m-conotoxin | 2000 |
384 |
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Shapiro, Michael D. | Divergence, convergence, and the ancestry of feral populations in the domestic rock pigeon | Domestic pigeons are spectacularly diverse and exhibit variation in more traits than any other bird species [1]. In The Origin of Species, Charles Darwin repeatedly calls attention to the striking variation among domestic pigeon breeds - generated by thousands of years of artificial selection on a s... | | 2010 |
385 |
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Shapiro, Michael D. | Divergence, convergence, and the ancestry of feral populations in the domestic rock pigeon | | Stringham, Sydney A.; Mulroy, Elisabeth E.; Xing, Jinchuan; Record, David; Guernsey, Michael W.; Aldenhoven, Jaclyn T.; Osborne, Edward J. | |
386 |
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Shapiro, Michael D. | Divergence, convergence, and the ancestry of feral populations in the domestic rock pigeon | | Stringham, Sydney A.; Mulroy, Elisabeth E.; Xing, Jinchuan; Record, David; Guernsey, Michael W.; Aldenhoven, Jaclyn T.; Osborne, Edward J. | |
387 |
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Coley, Phyllis D.; Lokvam, John; Kursar, Thomas A. | Divergent defensive strategies of young leaves in two species of Inga | In the recently radiated genus Inga (Fabaceae), few nucleotide substitutions have accumulated among species, yet large divergences have occurred in defensive phenotypes, suggesting strong selection by herbivores. We compared herbivory and defenses of young leaves for I. goldmanii, a more derived spe... | Bioassays; Flavanoids; Heliothis virescens; Herbivory; Inga goldmanii; Inga umbellifera; Leaf development; Non-protein amino acids; Phoebis philea | 2005 |
388 |
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Olivera, Baldomero M. | DNA-topoisomerase modification | The first reports of topoisomerase modification were published in 1982 and 1983 (Mills et al. 1982; Durban et al. 1983; Ferro et al. 1983; Jongstra-Bilen et al. 1983). Although a wide variety of posttranslational modifications of DNA topoisomerases may occur, this chapter focuses only on phosphoryl... | Poly(ADP-ribosylation); Serine residues | 1990 |
389 |
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Adler, Frederick R. | Do rhinoviruses follow the neutral theory? The role of cross-immunity in maintaining the diversity of the common cold | Over 100 serotypes of rhinoviruses, one of the primary causes of the common cold, co-circulate in the human population. This high diversity makes it effectively impossible to develop a vaccine, even for those at risk of complications due to asthma or cystic fibrosis. | Serotypes; mutation rate; immunodominance | 2006 |
390 |
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Clayton, Dale H. | Does avian malaria reduce fledging success: an experimental test of the selection hypothesis | Like many parasites, avian haematozoa are often found at lower infection intensities in older birds than young birds. One explanation, known as the "selection" hypothesis, is that infected young birds die before reaching adulthood, thus removing the highest infection intensities from the host popul... | | 2013-01-01 |
391 |
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Symko, Orest George | Does the quasicrystal AlCuFe follow Ohm's law? | We present the first measurements of the electrical I-V characteristics of AlCuFe quasicrystalline thin films processed by solid state interdiffusion of magnetron sputtered Al, Cu, and Fe layers. Despite the peculiar electronic properties of quasicrystals, our results show that those samples follow ... | AlCuFe; Quasicrystal | 1994-10 |
392 |
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Vardeny, Zeev Valentine | Double-modulation electro-optic sampling for pump-and-probe ultrafast correlation measurements | We describe a novel electro-optic double-modulation (DM) sampling technique for ultrafast transient spectroscopy, which is characterized by a superior signal-to-noise ratio compared to that of a regular single-modulation technique. DM is achieved by a combined effect of a radio-frequency modulation,... | Double-modulation; Electro-optic sampling; Ultrafast transient spectroscopy; Pump; Probe | 1998 |
393 |
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Gesteland, Raymond F.; Atkins, John F.; Ingram, Jennifer A.; Kelly, Paul J.; Grentzmann, Guido | Dual-luciferase reporter system for studying recoding signals | A new reporter system has been developed for measuring translation coupling efficiency of recoding mechanisms such as frameshifting or readthrough. A recoding test sequence is cloned in between the renilla and firefly luciferase reporter genes and the two luciferase activities are subsequently measu... | Amino Acid Sequence; Genes, Reporter; HIV; Antizyme; Translation | 1998 |
394 |
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Capecchi, Mario R. | Duplication of the Hoxd11 gene causes alterations in the axial and appendicular skeleton of the mouse. | The Hox genes encode a group of transcription factors essential for proper development of the mouse. Targeted mutation of the Hoxd11 gene causes reduced male fertility, vertebral transformation, carpal bone fusions, and reductions in digit length. A duplication of the Hoxd11 gene was created with th... | Animals; Bone Development; Forelimb; Gene Expression Regulation, Developmental | 2002-09-01 |
395 |
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Gondolo, Paolo | DUSEL theory white paper | The scientific case for a Deep Underground Science and Engineering Laboratory [DUSEL] located at the Homestake mine in Lead, South Dakota is exceptional. The site of this future laboratory already claims a discovery for the detection of solar neutrinos, leading to a Nobel Prize for Ray Davis. Moreov... | DUSEL; Deep Underground Science and Engineering Laboratory; Proton decay | 2008 |
396 |
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Mattis, Daniel C. | Dynamic properties of a nonsuperfluid Bose liquid in the random-phase approximation | The dynamic structure factor S(k,w) of a nonideal Bose liquid is calculated within the random-phase approximation and compared with neutron scattering data by Cowley and Woods for liquid helium in the temperature range Tλ<T≤4.2°K, with the conclusion that the model is wholly inadequate. A low-f... | Bose liquid; Random-phase approximation; Overdamping | 1974-11 |
397 |
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Miller, Joel Steven; Epstein, Arthur J. | Dynamic spin fluctuations in the molecular ferromagnet (DMeFc)(TCNE) | The static and dynamic magnetic properties of the molecular ferromagnet decamethylferrocenium tetracyanoethenide (DMeFc)(TCNE) are studied via the muon-spin-relaxation technique. Spontaneous order is observed in the ferromagnetic ground state below 5 K, while the muon-spin-relaxation rate in the par... | Magnetic; Magnetization; Paramagnetic | 2001 |
398 |
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Goller, Franz | Dynamical origin of spectrally rich vocalizations in birdsong | Birdsong is a model system for learned vocal behavior with remarkable parallels to human vocal development and sound production mechanisms. Upper vocal tract filtering plays an important role in human speech, and its importance has recently also been recognized in birdsong. However, the mechanisms... | Taeniopygia guttata; Labial oscillations; SNILC bifurcation | 2008-07 |
399 |
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Wu, Yong-Shi | Dynamics of giant-gravitons in the LLM geometry and the fractional quantum Hall effect | The LLM's 1/2 BPS solutions of IIB supergravity are known to be closely related to the integer quantum Hall droplets with filling factor v = 1, and the giant gravitons in the LLM geometry behave like the quasi-holes in those droplets. In this paper we consider how the fractional quantum Hall effect ... | | 2006 |
400 |
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Mattis, Daniel C. | Dynamics of quasiparticles in the two-dimensional Hubbard model | The Hubbard model at half-filling is a collective, antiferromagnetic insulator. We study added electrons or holes. The insulating energy gap and the dispersion of the added carriers are calculated variationally in two dimensions with use of a Monte Carlo evaluation of the electronic correlation f... | Dispersion; Electrons; Carriers | 1990 |