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Creator | Title | Description | Subject | Date |
| 1 |
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Poulter, Charles Dale | (S)-Geranylgeranylglyceryl phosphate synthase. Purification and characterization of the first pathway-specific enzyme in archaebacterial membrane lipid biosynthesis | The first pathway-specific step in the biosynthesis of the core membrane diether lipids in archaebacteria is the alkylation of the primary hydroxyl group in (S)-glyceryl phosphate by geranylgeranyl diphosphate. The reaction is catalyzed by (S)-3-O-geranylgeranylglyceryl phosphate ((S)-GGGP) synthase... | Polyacrylamide gel; Molecular weight | 1993-10-15 |
| 2 |
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Ailion, David Charles | 109Ag NMR investigation of atomic motions in the incommensurate and paraelectric phases of proustite (Ag3AsS3) | 109Ag NMR line shape, T1 , Hahn spin echo, and Carr-Purcell-Meiboom-Gill ~CPMG! spin-echo measurements were performed in proustite (Ag3AsS3) between 420 and 47 K in order to understand the role of atomic motions in phase transitions in a system containing an incommensurate phase. These measurements ... | NMR; Atomic motion; Proustitie; Phase transitions; Line shape | 2000 |
| 3 |
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Ailion, David Charles | 14N study of the role of N-D---O bonds in the deuteron glass transition | 14N spin-lattice relaxation-time measurements in Rb0.28(ND4)0.72D2PO4 provide direct evidence for the fast exchange averaging of the "long" and "short" N-D---O hydrogen bonds between the ND4 group and the four surrounding PO4 groups. This exchange and the associated distortion of the ND4 tetrahedron... | NMR; Hydrogen bonds; Spin-lattice; Relaxation-time; Deuteron glass | 1999 |
| 4 |
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Poulter, Charles Dale; Davis, Darrell R. | 15N labeled e. coli tRNAMet, tRNAGlu, tRNATyr, and tRNAPhe. Double resonance and two dimensional NMR of H-N1 units in pseudouridine | The N1 imino units in Escherichia coli tRNAfMet, tRNAGlu, tRNAPhe, and tRNATyr were studied by 1H-15N NMR using three different techniques to suppress signals of protons not attached to 15N. Two of the procedures, Fourier internuclear difference spectroscopy and two-dimensional forbidden echo spectr... | Escherichia coli; Magnetic resonance spectroscopy; Nucleic acid conformation | 1985-08-15 |
| 5 |
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Poulter, Charles Dale; Davis, Darrell R. | 15N-labeled Escherichia coli tRNAfMet, tRNAGlu, tRNATyr, and tRNAPhe. Double resonance and two-dimensional NMR of N1-labeled pseudouridine. | The N1 imino units in Escherichia coli tRNAfMet, tRNAGlu, tRNAPhe, and tRNATyr were studied by 1H-15N NMR using three different techniques to suppress signals of protons not attached to 15N. Two of the procedures, Fourier internuclear difference spectroscopy and two-dimensional forbidden echo spectr... | Escherichia coli; Magnetic resonance spectroscopy; Nitrogen; Nucleic acid conformation | 1985-08-15 |
| 6 |
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Poulter, Charles Dale; Davis, Darrell R. | 15N-labeled tRNA. Identification of 4-thiouridine in Escherichia coli tRNASer1 and tRNATyr2 by 1H-15N two-dimensional NMR spectroscopy. | Uridine is uniquely conserved at position 8 in elongator tRNAs and binds to A14 to form a reversed Hoogsteen base pair which folds the dihydrouridine loop back into the core of the L-shaped molecule. On the basis of 1H NMR studies, Hurd and co-workers (Hurd, R. E., Robillard, G. T., and Reid, B. R. ... | Magnetic resonance spectroscopy | 1986-09-15 |
| 7 |
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Poulter, Charles Dale; Davis, Darrell R. | 15N-labeled tRNA. Identification of dihydrouridine in Escherichia coli tRNAfMet, tRNALys, and tRNAPhe by 1H-15N two-dimensional NMR. | The N3 imino units of dihydrouridine were identified in samples of 15N-labeled Escherichia coli tRNAfMet, tRNALys, and tRNAPhe by 1H-15N two-dimensional NMR. The peaks for dihydrouridine had high field 1H (9.7-9.8 ppm) and 15N (147.8-149.5 ppm) chemical shifts. Assignments were made by 1H-15N chemic... | Hydrogen Bonding; Magnetic Resonance Spectroscopy; Magnetic Resonance Spectroscopy | 1986-03-15 |
| 8 |
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Seger, Jon | 1998 Sewall Wright Award: William Donald Hamilton | The Sewall Wright Award was established in 1991 to honor active investigators who have contributed in especially significant ways to the conceptual unification of the biological sciences. This year's recipient is William D. Hamilton of Oxford University. Beginning in the 1960s with his papers on the... | Evolution; Biological; Research | 1999 |
| 9 |
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Miller, Joel Steven | 1H NMR investigation of the magnetic spin configuration in the molecule-based ferrimagnet [MnTFPP][TCNE] | 1H NMR line-shape measurements have been performed in the linear chain molecule-based ferrimagnet [MnTFPP][TCNE].xPhMe (TFPP=tetrakis(4-fluorophenyl)porphinato; TCNE=tetracyanoethylene) as a function of temperature. Hyperfine shifts of opposite sign were observed indicating the presence of two oppo... | Magnetization; Magnets; Paramagnetic | 2002 |
| 10 |
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Ailion, David Charles | 31P NMR spin-lattice relaxation: structural glass dynamics in Rb1-x(ND4)xD2PO4 | We performed 3 1P NMR measurements of the temperature-dependent spin-lattice relaxation time in several mixed single crystals of Rbi_x(ND4 ) xD2P04 [DRADP] having different ammonium concentration x (x =0.22, 0.44, 0.78) as well as in three pure single crystals (ND4)D2P04 [DADP], (NH4)H2P04 [ADP], an... | NMR; Spin-lattice; Relaxation; Crystals; Glass; Spin-glass | 1993 |
| 11 |
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Ailion, David Charles; Blinc, Robert | 35Cl spin-lattice relaxation in incommensurate bis(4-chlorophenyl)sulfone | The 35C1 nuclear-quadrupole-resonance (NQR) spin-lattice relaxation rate in incommensurate bis(4- chlorophenyl)sulfone (BCPS) is determined by Raman processes below 60 K and by direct one-phonon processes above 60 K. The variation of the 35C1 spin-lattice relaxation rate over the incommensurate NQR... | 35Cl; Incommensurate bis(4-chlorophenyl)sulfone; Raman processes; NQR; Incommensurate systems | 1995-01 |
| 12 |
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Morse, Michael David | The 3d?Ni(?F)3d10Cu???*? manifold of excited electronic states of NiCu | Diatomic NiCu has been supersonically cooled in a molecular beam and investigated by resonant two-photon ionization spectroscopy. A total of nine band systems connecting the ground 3d?Ni3??Cu??, X 2?5/2 state to the 3d?Ni(3F)3d??Cu??*?? manifold of states have been found, and bands of eight of these... | | 1992 |
| 13 |
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Saam, Brian | 3He spin exchange cells for magnetic resonance imaging | We present a protocol for the consistent fabrication of glass cells to provide hyperpolarized (HP) 3He for pulmonary magnetic resonance imaging. The method for producing HP 3He is spin-exchange optical pumping. The valved cells must hold of order 1 atm.L of gas at up to 15 atm pressure. Because char... | 3He; Spin exchange cells; Hyperpolarized 3He; Pulmonary magnetic resonance imaging; Spin-exchange optical pumping; SEOP; Glass cells | 2002 |
| 14 |
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Ailion, David Charles | 79Br nuclear-quadrupole-resonance lineshape and Raman-induced spin-lattice relaxation in the incommensurate phase of β- ThBr4 | We performed 7 9Br nuclear-quadrupole-resonance (NQR) line-shape and spin-lattice relaxation time measurements in the incommensurate (D system j8-ThBr4 over the temperature range 293-2.5 K. In addition, we extended the theory of the effects of Raman processes on amplitudon and phason spin-lattice re... | Spin-lattice; NQR; Raman process; Line shape; Phason gap; Incommensurate systems | 1989 |
| 15 |
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Morse, Michael David | The 846 nm A? ???u ? ??? band system of jet-cooled V? | The 846 nm band system of jet-cooled 5?V2 has been recorded using resonant two-photon ionization spectroscopy, and is assigned as the A ? 3?u- +X ??g- band system. Both the ?'= 1u? ?" = 1g and ?'= Ou+ ??? = 0g+ subbands of the O-O band have been rotationally resolved and analyzed. Although the trans... | | 1992 |
| 16 |
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Ailion, David Charles | 93Nb NMR in the imcommensurate and quasi-commensurate phases of barium sodium niobate | NMR spectra have been measured for the quadrupole perturbed 1/2 -1/2 transition of 9 3Nb in barium sodium niobate (BSN) between 300 and 650 K. The spectra are inhomogeneously broadened in the incommensurate (/) phase between T7 = 580 K and r c = 540 K as well as in the quasicommensurate (QC) phase ... | NMR; Spectra; Barium sodium niobate; Line shapes | 1994 |
| 17 |
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Morse, Michael David | ???X??+ band systems of jet-cooled ScCo and YCo | Rotationally resolved resonant two-photon ionization (R2PI) spectra of ScCo and YCo are reported. The measured spectra reveal that these molecules possess ground electronic states of 1?+ symmetry, as previously found in the isoelectronic Cr2 and CrMo molecules. The ground state rotational constant... | | 2010 |
| 18 |
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Morse, Michael David | The ?IIou ?X ???g band system of jet-cooled Ti? | A band of jet-cooled ??Ti? has been located in the near infrared by resonant two-photon ionization spectroscopy. Rotational analysis has shown the band to be an ?? =O* ???=1 transition, which is consistent with the 3??g, ground state proposed by Bauschlicher ef al. [J. Chem. Phys. 95, 1057 ( 1991)]... | | 1992 |
| 19 |
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Olivera, Baldomero M. | ?O-Conotoxins inhibit NaV channels by interfering with their voltage sensors in domain-2 | The ?O-conotoxins MrVIA and MrVIB are 31-residue peptides from Conus marmoreus, belonging to the O-superfamily of conotoxins with three disulfide bridges. They have attracted attention because they are inhibitors of tetrodotoxin-insensitive voltage-gated sodium channels (NaV1.8) and could therefore ... | | 2007 |
| 20 |
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Miller, Joel Steven | [Cyanil]2 2- dimers possess long, two-electron ten-center (2e-/10c) multicenter bonding | A long, two-electron ten-center (2e-/10c) [8 carbon plus 2 oxygen] bond in diamagnetic dimers of radical-anion tetracyano-1,4-benzoquinoneide (cyanil, [Q]2 2-, is described by B2LYP and CASSCF92,2)/MCQDPT calculations. | Carbon bonds; Cyanil | 2008 |
| 21 |
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Dearing, Maria-Denise | [Dearing_Database_Pilot] | [Database deposited March 08, 2013, as part of a pilot project, eResearch Committee, University of Utah.] [This description should include information that explains the dataset in detail in a manner that would be useful to potential reuse. The contact information for the primary investigator should ... | [Creator keywords here.] | 2013-03-08 |
| 22 |
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Miller, Joel Steven | [Et4N]2[TCNE]2 (TCNE = tetracyanoethylene) - an example of an exceptionally long 2.827 Ã CC bond | Interest in organic compounds exhibiting unusually long CC bonds has been the subject of several recent studies.1-3 The longest sp3-sp3 C-C single bond reported to date is 1.73 A°,1,2 whereas several [TCNE]22- (TCNE = tetracyanoethylene) dimers have been recently reported to form cation-assisted, l... | Synthesis; Crystal; Solution | 2001 |
| 23 |
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Miller, Joel Steven | [MeNC5H5]2[TCNE]2 (TCNE = tetracyanoethylene). Single crystal X-ray and neutron diffraction characterization of an exceptionally long 2.8 Å C-C bond | The reaction of N-methylpyridinium iodide, Mepy+I-, and tetracyanoethylene (TCNE) forms [Mepy]2[TCNE]2, which possesses [TCNE]2 2' with an intradimer C-C bond distance of 2.806(1)Å at 50 K from X-ray diffraction, and 2.801(4)Å at 50 K from neutron diffraction. In the IR it exhibits nChN absorption... | C-C bond; Tetracyanoethylene; Neutron diffraction; X-ray diffraction; Multicenter C-C bonding | 2009 |
| 24 |
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Sekercioglu, Cagan | A birders quide to Turkey | As I write, it is early December and the woods outside my window lay dusted with snow like a holiday card by Currier and Ives. A minute ago, I looked up and caught a glimpse of an adult Cooper's Hawk dashing swiftly through the trees. It swooped up, landed on a branch, then briefly shook its tail an... | | 2006-01-01 |
| 25 |
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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 |
| 26 |
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Swalberg, AJa | A new denazinemys (baenid turtle) specimen from the upper cretaceous wahweap formation | | | 2012-04-18 |
| 27 |
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Dale, Colin | A novel human-infection-derived bacterium provides insights into the evolutionary origins of mutualistic insect-bacterial symbioses | Despite extensive study, little is known about the origins of the mutualistic bacterial endosymbionts that inhabit approximately 10% of the world's insects. In this study, we characterized a novel opportunistic human pathogen, designated ‘‘strain HS,'' and found that it is a close relative of th... | | 2012-01-01 |
| 28 |
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Morse, Michael David | A pair potentials study of matrix-isolated atomic zinc. II. Intersystem crossing in rare-gas clusters and matrices | The mechanism of 4p 1P1?4p 3PJ intersystem crossing (ISC) following excitation of the 4p 1P1 level of matrix-isolated atomic zinc is investigated using a pair potentials approach. This is achieved by extending earlier ISC calculations on the Zn?RG2 and Zn?RG3 complexes to the square planar Zn?RG4 ... | | 1998 |
| 29 |
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Crespo, Jose Guillermo | A review of chemosensation and related behavior in aquatic insects | Insects that are secondarily adapted to aquatic environments are able to sense odors from a diverse array of sources. The antenna of these insects, as in all insects, is the main chemosensory structure and its input to the brain allows for integration of sensory information that ultimately ends in b... | | 2011-09-13 |
| 30 |
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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 |
| 31 |
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Olivera, Baldomero M.; McIntosh, J. Michael; Hillyard, David R. | A-superfamily of conotoxins: structural and functional divergence | The generation of functional novelty in proteins encoded by a gene superfamily is seldom well documented. In this report, we define the A-conotoxin superfamily, which is widely expressed in venoms of the predatory cone snails (Conus), and show how gene products that diverge considerably in stru... | Conotoxins; A-superfamily conotoxin | 2004-02-03 |
| 32 |
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| AAMC Award for Distinguished Research presentation for 1998 | This is a 3 minutes, 51 seconds video of the presentation of the American Association of Medical Colleges' Award for Distinguished Research to Mario Capecchi and Oliver Smithies for their independent work as pioneers in gene targeting. | Transgenic mice; Gene targeting; Genetic engineering; Mutagenesis; Capecchi, Mario R.; Science - Awards - United States; Smithies, Oliver; Awards presentations | 1998 |
| 33 |
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Voth, Gregory Alan | Ab initio calculations of reactive pathways for ?-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (?-HMX) | Using the BLYP and B3LYP level of density functional theory, four possible decomposition reaction pathways of HMX in the gas phase were investigated: N?NO2 bond dissociation, HONO elimination, C?N bond scission of the ring, and the concerted ring fission. The energetics of each of these four mechan... | Ab initio calculations; Reactive pathways; HMX | 2000 |
| 34 |
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Ehleringer, James R. ; Cerling, Thure E. | Aberrant water homeostasis detected by stable isotope analysis | While isotopes are frequently used as tracers in investigations of disease physiology (i.e., 14C labeled glucose), few studies have examined the impact that disease, and disease-related alterations in metabolism, may have on stable isotope ratios at natural abundance levels. The isotopic composition... | | 2010-07-21 |
| 35 |
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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 |
| 36 |
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Wu, Yong-Shi | Absence of (1,0) supersymmetry anomaly in world-sheet gauge theories: a purely cohomological proof | A purely cohomological proof is given for the absence of the (1,0) supersymmetry anomaly in gauge theories on a world sheet. In particular, it is shown that generalized cohomological approaches to anomalies in supersymmetric gauge theory, either formulated in whole superconnection space or only in t... | World sheet; String theory; Superfields; Superspace | 1989-01 |
| 37 |
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Capecchi, Mario R. | Absence of radius and ulna in mice lacking hoxa-11 and hoxd-11. | Mice with targeted disruptions in Hox genes have been generated to evaluate the role of the Hox complex in determining the mammalian body plan. This complex of 38 genes encodes transcription factors that specify regional information along the embryonic axes. Early in vertebrate evolution an ancestra... | Alleles; Animals; Bone and Bones; Carpal Bones | 2003-09-02 |
| 38 |
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Symko, Orest George | Absorption at radio frequencies in superconducting Y1Ba2Cu3Oy | The large magnetic-field-dependent ac absorption in superconducting Y1Ba2Cu3Oy ceramics and powders decreases slowly with increasing frequency in the range 2-16 MHz. The magnetic-field-dependent ac absorption is observed below Tc in superconducting Y1Ba2Cu3Oy ceramics, powders and twinned crystals ... | Copper-octahedral oxygen perovskites; Superconducting Y1Ba 2Cu3Oy; ac absorption | 1989 |
| 39 |
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Vardeny, Zeev Valentine | Absorption studies of charged excitations in α-sexithiophene | We present photoexcitation studies of vacuum deposited neutral films of α,ω-substituted sexithiophene (α-6T) using photoinduced absorption (PA) and PAdetected magnetic resonance spectroscopy (PADMR). We find evidence for photoinduced polarons having spin 1/2, with two absorption bands at 0.80... | alpha- sexithiophene; Charged excitations; Photoexcitation; Photoinduced absorption | 1996 |
| 40 |
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Vardeny, Zeev Valentine | Absorption-detected magnetic-resonance studies of photoexcitations in conjugated-polymer/C60 composites | Photoexcitations in poly[2-methoxy-5-(2'-ethyl-hexyloxy -p-phenylene vinylene] (MEH-PPV) and composites of MEH-PPV and C60 (MEH-PPV/C60) were studied by photoinduced absorption and absorptiondetected magnetic-resonance spectroscopies. We report direct evidence that the prominent triplet photoexci... | Photoexcitations; Conjugated-polymer/C60 composites; Triplet photoexcitations | 1996-02 |
| 41 |
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Mattis, Daniel C. | Accuracy of bosonization for localized interactions | Bosonization is commonly used to calculate the ground-state energy and the dynamics of simple model nonmagnetic impurities in metals. We analyze the accuracy of this procedure in the calculation of the ground-state energy of a simple, solvable, model. | Fermions; Electrons; Magnetic | 2000 |
| 42 |
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Symko, Orest George | Acoustic approach to thermal management: miniature thermoacoustic engines | An acoustic approach to thermal management in electronics can be efficient and it can be directly interfaced with electronic devices. It is based on two types of thermoacoustic heat engines, which are being developed for microcircuit applications. One type of device, the prime mover, converts heat t... | Thermoacoustic engines; Thermal management | 2006 |
| 43 |
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Armentrout, Peter B. | Activation of methane by gold cations: guided ion beam and theoretical studies | The potential energy surface for activation of methane by the third-row transition metal cation, Au+, is studied experimentally by examining the kinetic energy dependence of this reaction using guided ion beam tandem mass spectrometry. A flow tube ion source produces Au+ primarily in its 1S0 (5d10) ... | | 2006 |
| 44 |
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Armentrout, Peter B. | Activation of methane by size-elected iron cluster cations, Fen+ (n=2-15): cluster-CHx (x=0-3) bond energies and reaction mechanisms | The kinetic energy dependences of the reactions of Fen + (n=2 - 15) with CD4 are studied in a guided ion beam tandem mass spectrometer over the energy range of 0-10 eV. All reactions exhibit thresholds and two main products, FenD+ and FenCD2+, are formed. | Metal clusters; Iron ions; Bond energies; Dehydrogenation; Endothermic reactions; Transition metal ions | 2001 |
| 45 |
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Beckerle, Mary C. | Activation-dependent redistribution of the adhesion plaque protein, talin, in intact human platelets | Talin is a high molecular weight protein localized at adhesion plaques in fibroblasts. It binds vinculin and integrin and appears to participate in generating a transmembrane connection between the extracellular matrix and the cytoskeleton. | Talin | 1989 |
| 46 |
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Shapiro, Michael D. | Adaptive evolution of pelvic reduction in sticklebacks by recurrent deletion of a Pitx1 enhancer | The molecular mechanisms underlying major phenotypic changes that have evolved repeatedly in nature are generally unknown. Pelvic loss in different natural populations of threespine stickleback fish has occurred by regulatory mutations deleting a tissue-specific enhancer of the Pituitary homeobox t... | Adaptive evolution; Pelvic reduction; Pituitary homeobox transcription factor 1; Pitx1; Gasterosteus aculeatus | 2010-01-14 |
| 47 |
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Beckerle, Mary C. | Adhesion plaque protein, talin, is phosphorylated in vivo in chicken embryo fibroblasts exposed to the tumor-promoting phorbol ester | Talin is a high molecular weight phosphoprotein that is localized at adhesion plaques. We have found that talin phosphorylation increases 3.0-fold upon exposure of chicken embryo fibroblasts to the tumor-promoting phorbol ester, phorbol 12-myristate 13-acetate. | Talin; Vinculin; Chicken embryo fibroblasts | 1990 |
| 48 |
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Symko, Orest George | Adiabatic compressional cooling of He3 | By adiabatic compression of a two-phase mixture of liquid and solid He3, temperatures below 2.5 mK have been obtained. These are in the range expected for nuclear ordering in solid He3. | He3; Adiabatic compressional cooling | 1969-03 |
| 49 |
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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 |
| 50 |
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Williams, Clayton C. | Advances in experimental technique for quantitative two dimensional dopant profiling by scanning capacitance microscopy | Several advances have been made toward the achievement of quantitative two-dimensional dopant and carrier profiling. To improve the dielectric and charge properties of the oxide-silicon interface, a method of low temperature heat treatment has been developed which produces an insulating layer with c... | Doping; Scanning capacitance microscope; SCM | 1999 |
| 51 |
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Gondolo, Paolo | AGAPE, a microlensing search in the direction of M31: status report | The M31 galaxy in Andromeda is the nearest large galaxy after the Small and Large Magellanic Clouds. It is a giant galaxy, roughly 2 times as large as our Milky Way, and has its own halo. As pointed by some of us [1, 2] and independantly by A. Crotts [3], M31 provides a rich field of stars to searc... | AGAPE; Andromeda Gravitational Amplification Pixel Experiment; Microlensing; MACHO; Massive compact halo objects | 1995 |
| 52 |
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Gondolo, Paolo | AGAPE: a search for dark matter in M31 by microlensing effects on unresolved stars | M 31 is a very tempting target for a microlensing search of compact objects in galactic haloes. It is the nearest large galaxy, it probably has its own dark halo, and its tilted position with respect to the line of sight provides an unmistakable signature of microlensing. However most stars of M 31... | M31; AGAPE; Pixel method; Galaxy; Halo; Cosmology; Gravitational lensing | 1997 |
| 53 |
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Gondolo, Paolo | AGAPE: andromeda gravitational amplification pixel experiment | The aim of the AGAPE (Andromeda Gravitational Ampli_x000C_cation Pixel Experiment), experiment which has been _x000C_rst proposed in June 1992 is to examine the distribution of massive astrophysical compact halo objects ((MACHO's) which possibly are in the galactic haloes and which could account for... | AGAPE; Andromeda Gravitational Amplification Pixel Experiment; Microlensing; MACHO; Massive compact halo objects | 1997 |
| 54 |
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Gondolo, Paolo | AGAPEROS: searching for microlensing in the LMC with the pixel method. I. Data treatment and pixel light curves production | Recent surveys monitoring millions of light curves of resolved stars in the LMC have discovered several microlensing events. Unresolved stars could however signi _x000C_cantly contribute to the microlensing rate towards the LMC. Monitoring pixels, as opposed to individual stars, should be able to ... | Data analysis techniques; Halo; Galaxies; Gravitational lensing; Pixel method; Large Magellanic Cloud; LMC | 1999 |
| 55 |
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Gondolo, Paolo | AgapeZ1: a large amplification microlensing event or an odd variable star towards the inner bulge of M31 | AgapeZ1 is the brightest and the shortest duration microlensing candidate event found to date in the Agape experiment. It occurred only 4200 from the centre of M31 at RA = 0h42m41:47s and Dec = 41°16'39.1" (J2000). Our photometry shows that the half intensity duration of the event is 5.3 days and ... | AgapeZ1; Galaxy; Halo; Cosmology; Gravitational lensing; M31; Pixel method | 1999 |
| 56 |
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Adler, Frederick R. | Aggregation and stability in parasite-host models | This paper generalizes the two-dimensional approximation of models of macroparasites on homogeneous populations developed by Anderson & May (1978), focusing on how the dispersion (the variance to mean ratio) of the equilibrium distribution of parasites on hosts is related to the stability of the equ... | Aggregation; Stability; Host-parasite models | 1992-04 |
| 57 |
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Lupton, John Mark | Air-induced fluorescence bursts from single semiconductor nanocrystals | We observe a dramatic enhancement of the fluorescence intensity from single core/shell CdSe/ZnS nanocrystals upon sudden exposure to air from an evacuated surrounding. Both the number of particles contributing to emission increases as well as the average emission intensity from a single particle, le... | CdSe; ZnS; Air-induced; Fluorescence bursts | 2004 |
| 58 |
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| Albert Lasker Awards Ceremony, 2001 | This is the 1 hour, 45 minutes, and 41 seconds video of the Lasker Awards Ceremony and Banquet held in September, 2001. The Albert Lasker Award for Basic Medical Research was given to Mario R. Capecchi, Oliver Smithies, and Martin Evans for their work in genetic research. Martin Evans discovered h... | Capecchi, Mario R.; Gene targeting; Embryonic stem cells; Transgenic mice; Genetic engineering; Science - Awards - United States; Smithies, Oliver; Evans, Martin J.; Awards presentations | 2001 |
| 59 |
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Wu, Yong-Shi | Algebraic and geometric aspects of generalized quantum dynamics | We briefly discuss some algebraic and geometric aspects of the generalized Poisson bracket and noncommutative phase space for generalized quantum dynamics, which are analogous to properties of the classical Poisson bracket and ordinary symplectic structure. | Quantum dynamics; Jacobi identity | 1994-06 |
| 60 |
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Wu, Yong-Shi | Algebraic solution for a two-level atom in radiation fields and the Freeman resonances | Using techniques of complex analysis in an algebraic approach, we solve the wave equation for a two-level atom interacting with a monochromatic light field exactly. A closed-form expression for the quasienergies is obtained, which shows that the Bloch-Siegert shift is always finite, regardless of ... | Bloch-Siegert shift; Freeman resonances; Quasienergies | 2006-02 |
| 61 |
 |
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 |
| 62 |
 |
Coley, Phyllis D.; Lokvam, John; Kursar, Thomas A. | Allelochemic function for a primary metabolite: the case of L-tyrosine hyper-production in Inga umbellifera (Fabaceae) | Young leaves of tropical forest trees experience far higher herbivory pressure than mature leaves of the same species. Selection on young leaves has led to diverse forms of defense chemical expression. Though most allelochemicals are secondary metabolites, allelochemic function for a primary metabol... | 5-amino-4-hydroxy-pentanoic acid; Panama; Barro Colorado Island; Fabaceae; Inga umbellifera; Primary metabolite; Heliothis virescens | 2006 |
| 63 |
 |
Beckerle, Mary C. | ALP-enigma protein ALP-1 functions in actin filament organization to promote muscle structural integrity in Caenorhabditis elegans | Mutations that affect the Z-disk-associated ALP-Enigma proteins have been linked to human muscular and cardiac diseases. Despite their clear physiological significance for human health, the mechanism of action of ALP-Enigma proteins is largely unknown. In Caenorhabditis elegans, the ALP-Enigma prot... | Actin; Caenorhabditis elegans; Contractility; alp-1 mutants; Z-disks; Kettin | 2009 |
| 64 |
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Capecchi, Mario R. | Altered enzymes in drug-resistant variants of mammalian tissue culture cells. | Two selective procedures are compared in an effort to isolate variants of mouse L cells containing structural gene mutations. Among the resulting variant cloned cell lines are found two types of alterations in theenzyme hypoxanthine phosphoribosyl transferase (EC 2.4.2.8.) (1): enzyme with altered ... | Drug Resistance; Azaguanine; Clone Cells; Hypoxanthines | 1973-11 |
| 65 |
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Adler, Frederick R. | Alternating host cell tropism shapes the persistence, evolution and coexistence of Epstein-Barr virus infections in human | Epstein-Barr virus (EBV) infects and can persist in a majority of people worldwide. Within an infected host, EBV targets two major cell types, B cells and epithelial cells, and viruses emerging from one cell type preferentially infect the other. We use mathematical models to understand why EBV infec... | | 2011 |
| 66 |
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Adler, Frederick R. | Alternating host cell tropism shapes the persistence, evolution and coexistence of Epstein-Barr virus infections in human | Epstein-Barr virus (EBV) infects and can persist in a majority of people worldwide. Within an infected host, EBV targets two major cell types, B cells and epithelial cells, and viruses emerging from one cell type preferentially infect the other. We use mathematical models to understand why EBV infec... | | 2010 |
| 67 |
 |
Olivera, Baldomero M. | Alternative splicing in the pore-forming region of shaker potassium channels | We have cloned cDNAs for the shaker potassium channel gene from the spiny lobster Panulirus interruptus. As previously found in Drosophila, there is alternative splicing at the 59 and 39 ends of the coding region. However, in Panulirus shaker, alternative splicing also occurs within the pore-forming... | Panulirus interruptus; Conotoxins; Shaker; Stomatogastric ganglion; Pore-forming region; Alternative splicing | 1997 |
| 68 |
 |
Coffin, Cheryl M.; Capecchi, Mario R. | Alveolar rhabdomyosarcomas in conditional Pax3:Fkhr mice: cooperativity of Ink4a/ARF and Trp53 loss of function. | Alveolar rhabdomyosarcoma is an aggressive childhood muscle cancer for which outcomes are poor when the disease is advanced. Although well-developed mouse models exist for embryonal and pleomorphic rhabdomyosarcomas, neither a spontaneous nor a transgenic mouse model of alveolar rhabdomyosarcoma has... | Cell Differentiation; Forkhead Transcription Factors; Myogenic Regulatory Factors | 2004-11-01 |
| 69 |
 |
Mattis, Daniel C.; Sutherland, Bill | Ambiguities with the relativistic δ-function potential | In many cases of physical interest, the 6-function potential is a very convenient approximation to more structured, and more difficult, short-ranged potentials. In relativistic theories, its use is often mandated because only a mathematical point has a relativistically invariant shape. Neverthele... | Delta function; Energy states | 1981-09 |
| 70 |
 |
Olivera, Baldomero M. | Aminoglycoside effects on voltage-sensitive calcium channels and neurotoxicity | To the Editor: Since ototoxicity and neuromuscular toxicity of aminoglycoside antibiotics are reversed by calcium, 1,2 and presynaptic events appear to be involved in aminoglycoside-induced neuromuscular blockade, 3,4 we suspected a role for voltage-sensitive calcium channels in aminoglycoside neuro... | Conotoxins | 1987 |
| 71 |
 |
Vardeny, Zeev Valentine; Gellermann, Werner | Amplified resonant Raman scattering in conducting polymer thin films | Using picosecond pulsed laser excitation, we investigate the optical emission characteristics of poly(2,5-dioctyloxy-p-phenylenevinylene), (DOO-PPV), thin films at high excitation intensities (~1-90 MW/cm2). We observe the presence of amplified resonance Raman scattering in the emission spectra of c... | Amplified resonant Raman scattering; High excitation intensities; pi-conjugated polymers | 1998 |
| 72 |
 |
Vardeny, Zeev Valentine | Amplified spontaneous emission and lasing in conducting polymers and fluorescent dyes in opals as photonic crystals | Spectral narrowing of photoluminescence (PL) and evolution of sharp emission lines upon optical excitation have been observed in opals made of SiO2 spheres infiltrated with conducting polymers such as OOPPV and MDDOPPV and also fluorescent dyes such as rhodamine 6G, NK-3483, and coumarin 120. Their ... | Amplified spontaneous emission; Lasing; Fluorescent dyes | 1999 |
| 73 |
 |
Vardeny, Zeev Valentine; Ehrenfreund, Eitan A. | Amplitude and phase modes in trans-polyacetylene: resonant Raman scattering and induced infrared activity | The resonant Raman scattering (RRS) from the three Ag modes of trans-polyacetylene and the charged-induced ir modes are analyzed with use of the amplitude- and phase-mode theories. It is shown that the observed phonon frequencies and the relative intensities of all modes obtained at various laser ex... | Induced infrared activity; Ag modes; Amplitude modes; Phase modes; Trans-polyacetylene | 1987-07 |
| 74 |
 |
Sokolsky, Pierre | An analog light scattering experiment of hexagonal icelike particles. part I: experimental apparatus and test measurements | An experimental apparatus to measure the scattering properties of hexagonal icelike particles in the analog manner at the helium neon laser wavelength of 0.633 mm has been designed and built. The instrument consists of an array of 36 highly sensitive and linear photodiode detectors that are positi... | | 1999 |
| 75 |
 |
Sokolsky, Pierre | An analog light scattering experiment of hexagonal icelike particles. part II: experimental and theoretical results | The scattering properties of hexagonal icelike crystals as measured in the analog manner by the experimental apparatus described in Part I are presented. The crystals are made out of sodium fluoride (NaF), which has an index of refraction similar to that of water ice. The experimentally determined... | | 1999 |
| 76 |
 |
Mattis, Daniel C. | An expanded Luttinger model | This paper generalizes Luttinger's model by introducing curvature (d2ε (k) dk2 ≠ 0 ) into the kinetic energy. An exact solution for arbitrary interactions is still possible in principle, but it now requires disentangling the eigenvalue spectrum of an harmonic string of interacting boson fields at... | | 2012-01-01 |
| 77 |
 |
Clayton, Dale H. | An experimental test of the effects of behavioral and immunological defenses against vectors: do they interact to protect birds from blood parasites? | Background: Blood-feeding arthropods can harm their hosts in many ways, such as through direct tissue damage and anemia, but also by distracting hosts from foraging or watching for predators. Blood-borne pathogens transmitted by arthropods can further harm the host. Thus, effective behavioral and im... | | 2014-01-01 |
| 78 |
 |
Parkinson, John Stansfield | An unorthodox sensory adaptation site in the E. coli serine chemoreceptor | The serine chemoreceptor of E. coli contains four canonical methylation sites for sensory adaptation that lie near inter-subunit helix interfaces of the Tsr homodimer. An unexplored fifth methylation site, E502, lies at an intra-subunit helix interface, closest to the HAMP domain that controls input... | | 2014-01-01 |
| 79 |
 |
Sperry, John S. | Analysis of circular bordered pit function I. Angiosperm vessels with homogenous pit membranes | A model predicted pit and vessel conductivity, the air-seed pressure for cavitation, and the implosion pressure causing vessel collapse. Predictions were based on measurements from 27 angiosperm species with circular bordered pits and air-seed pressures of 0.2-11.3 MPa. Vessel implosion pressure exc... | Functional wood anatomy; hydraulic architecture; plant biomechanics | 2004 |
| 80 |
 |
Sperry, John S. | Analysis of circular bordered pit function II. Gymnosperm tracheids with torus-margo pit membranes | A model of xylem conduit function was applied to gymnosperm tracheids with torus-margo pit membranes for comparison with angiosperm vessels. Tracheids from 17 gymnosperm tree species with circular bordered pits and air-seed pressures from 0.8 to 11.8 MPa were analyzed. Tracheids were more reinforced... | Functional wood anatomy; hydraulic architecture; plant biomechanics | 2004 |
| 81 |
 |
Beckerle, Mary C. | Analysis of the roles of microtubules and actin in erythrophore intracellular motility | The Holocentrus erythrophore, a red pigment cell, represents a model system for the study of organized intracellular transport. We have investigated the possibility that microtubules and actin are integral components of the pigment translocating motility machine. | Actin; Actomyosin; Erythrophore; Pigment | 1983 |
| 82 |
 |
Wu, Yong-Shi | Analyzing powers for ∏±-13C scattering at T∏=100 MeV | Measurements of the analyzing power for the nC(rr±,rr±) reaction at Trr = 100 MeV have been made at TRIUMF using a polarized target consisting of 99% 1 3C enriched butanol. Data were obtained for the ground and 3.68 MeV excited states at angles from 110° to 150° in 10° steps. The data are con... | | 1992-02 |
| 83 |
 |
Sperry, John S. | Anatomy of the palm Rhapis excelsa, IX. Xylem structure of the leaf insertion | STEMS OF PERENNIAL PLANTS, particularly trees, represent a considerable investment in biomass. Trees can survive even under the most adverse conditions, but only if the hydraulic integrity of the stem is preserved. A very important and vulnerable part of the stem is the xylem. As water is pulled int... | Palm stems; Palm stem anatomy; Palm leaves; Leaf insertion; Vessel network; Vessel-length distribution; Primary vascular stem tissue; Hydraulic architechture; Water column | 1983 |
| 84 |
 |
Sperry, John S. | Anatomy of the palm Rhapis excelsa, VIII. Vessel network and vessel-length distribution in the stem | THE CONCEPT of the vessel, a conducting unit consisting of a series of vessel elements lined up end to end, has been known for well over a century (e.g., Hartig, 1878). The fact that vessels are of limited length is of considerable functional importance. If a vessel is damaged (for example, by an in... | Palm stems; Palm stem anatomy; Vessel network; Vessel-length distribution; Primary vascular stem tissue; Hydraulic architechture; Water column | 1982 |
| 85 |
 |
Gondolo, Paolo | Annual modulation of dark matter in the presence of streams | In addition to a smooth component of weakly interacting massive particle (WIMP) dark matter in galaxies, there may be streams of material; the effects of WIMP streams on direct detection experiments is examined in this paper. The contribution to the count rate due to the stream cuts off at some char... | WIMP streams; Weakly interacting massive particles; Cutoff energy; Halo models; Sagittarius dwarf galaxy; Recoil energy; Sgr stream | 2006-08 |
| 86 |
 |
Miller, Joel Steven; Epstein, Arthur J. | Anomalous charge transport phenomena in the molecular-based magnet V(TCNE)x.y(solvent) | We present charge transport studies on recently developed molecular-based magnets V(TCNE)x. y(solvent) (TCNE= tetracyanoethylene) which show local magnetic ordering at temperatures, T, as high as 400 K. V(TCNE), .y(solvent) prepared from the solvent CH2Cl2 has o(300 K) - 10-3 S/cm, and that prepar... | Frequency; Conductivity; Spin | 1993 |
| 87 |
 |
Vardeny, Zeev Valentine; Raikh, Mikhail E. | Anomalous coherent backscattering of light from opal photonic crystals | We studied coherent backscattering (CBS) of light from opal photonic crystals with incomplete band gaps. We observed a dramatic broadening of the CBS cone for incident angles close to the Bragg condition in the crystals. We modify the conventional CBS theory to incorporate Bragg attenuation resultin... | Coherent backscattering; Bragg condition | 2001-05 |
| 88 |
 |
Miller, Joel Steven; Epstein, Arthur J. | Anomalous magnetoresistance in high-temperature organic-based magnetic seminconducting V(TCNE)x films | Anomalous positive magnetoresistance (MR) in high temperature organic-based magnet V(TCNE)x (TCNE=tetracynoethylene) thin films is reported. MR increases linearly with applied magnetic field and shows a maximum at the ferrimagnetic ordering temperature. The suggested roles of oppositely spin pola... | Spin; Ferrimagnetic; Resistance | 2003 |
| 89 |
 |
Vardeny, Zeev Valentine | Anomalous optical and ESR properties of doped polydiethynylsilanes | The optical, transport, and ESR properties of soluble conducting four-membered polydiethynylsilane heterocycles are described. The undoped one-dimensional gap is 2.0 eV in both films and solutions; no photoluminescence is observed. I2 doping induces a single absorption band at -1.05 eV in solutions... | Polydiethynylsilane; Doped polydiethynylsilanes | 1991-09 |
| 90 |
 |
Miller, Joel Steven; Epstein, Arthur J. | Anomalous relaxation in a quasi-one-dimensional fractal cluster glass | The low-temperature spin glass state of the quasi-1D organic-based magnet [MnTPP]+[TCNE]- .x(1,3-C6H4Cl2) has unusually long relaxation times due to frustration induced by dipole-dipole interactions between fractal spin clusters. This long relaxation is investigated with in-field relaxation measurem... | Sweep rate; Bifurcation; Magnetization | 2004 |
| 91 |
 |
Mattis, Daniel C. | Anomalous skin effect in a magnetic field | A classical and quantum mechanical derivation of cyclotron resonance in metals is given. The classical result differs slightly from that obtained by Azbel and Kaner. The quantum derivation yields the same result as the classical calculation except that in the limit of low quantum numbers or high m... | Cyclotron resonance; Skin effect; Quantum transport | 1958-07 |
| 92 |
 |
Vardeny, Zeev Valentine; Nahata, Ajay | Anomalous transmission through heavily doped conducting polymer films with periodic subwavelength hole array | We observed resonantly enhanced (or anomalous transmission) terahertz transmission through two-dimensional (2D) periodic arrays of subwavelength apertures with various periodicities fabricated on metallic organic conducting polymer films of polypyrrole heavily doped with PF6 molecules [PPy(PF6)]. Th... | | 2006 |
| 93 |
 |
Mattis, Daniel C. | Anomaly in spin-wave spectrum of magnetic metals | It is pointed out that in the band theory of magnetism the magnons have frequencies comparable to the Fermi energy. Therefore, in the calculation of the magnon spectrum of iron, nickel, cobalt, etc., it is the time- or frequency-dependent response function of the electrons which is used, and this ... | Magnetic metals | 1966-11 |
| 94 |
 |
Davidson, Diane W. | Ant-plant symbioses in Africa and the neotropics : history, biogeography and diversity | Symbiotic ant-plant relationships afford an excellent opportunity to analyze the effects of both historical and ecological factors on the evolution of mutualisms. Occurring in tropical forests throughout the world, all myrmecophytic plants provide food and permanent housing to ants; the ants, in t... | Ant-plant symbiosis; Africa; Neotropics; Myrmecophytes; Plant-ants | 1993 |
| 95 |
 |
Kieda, David B. | Antarctic impulsive transient antenna (ANITA) instrumentation | We will report on the details of the ANITA instrument. This instrument is fundamentally a broadband antenna, which is arrayed and constructed in such a way as to be optimized for the detection and characterization of high-energy neutrino cascades [1]. The requirement to maximize the detector view of... | ANITA; Antarctic Impulsive Transient Antenna; Neutrino; Balloon; Antarctica | 2003 |
| 96 |
 |
Coley, Phyllis D. | Antifungal depsidone metabolites from Cordyceps dipterigena, an endophytic fungus antagonistic to the phytopathogen gibberella fujikuroi | Among thirty four endophytic fungal strains screened for in vitro antagonism, the endophytic fungus Cordyceps dipterigena was found to strongly inhibit mycelial growth of the plant pathogenic fungus Gibberella fujikuroi. Two new depsidone metabolites, cordycepsidone A (1) and cordycepsidone B (2), w... | | 2012 |
| 97 |
 |
Wu, Yong-Shi | Anyons on a torus: braid group, Aharonov-Bohm period, and numerical study | We present a careful construction of anyons on a torus starting with the braid-group analysis. The rules of Wen, Dagotto, and Fradkin for putting anyons on a torus are reproduced with some minor improvements. The existence of noncontractible loops leads to braid-group representations characterized n... | Braid group; Magnetic flux | 1991-05 |
| 98 |
 |
Gerton, Jordan | Apertureless near-field fluorescence microscope for biological imaging | We measured the optical response of fluorescent beads to sharp metallic and semiconducting probes, revealing several underlying near-field interactions. Our results suggest that -10 nanometer optical resolution with spectroscopic chemical sensitivity is possible, and bear strongly on molecular-scal... | | 2003-01-01 |
| 99 |
 |
Vardeny, Zeev Valentine; Ehrenfreund, Eitan A. | Apparent phonon side-band modes in π-conjugated systems: polymers, oligomers and crystals | The emission spectra of many π-conjugated polymers and oligomers contain side-band replicas with apparent frequencies that do not match the Raman active mode frequencies. Using a time dependent model we show that in such many mode systems, the increased damping of the time dependent transition dipo... | | 2005-11 |
| 100 |
 |
Vardeny, Zeev Valentine; Ehrenfreund, Eitan A. | Apparent vibrational side bands in rr-conjugated systems: the case of distyrylbenzene | The photoluminescence sPLd spectra of dilute solution and single crystals of distyrylbenzene show unique temperature-dependent vibronic structures. The characteristic single frequency progression at high temperatures is modulated by a low-frequency progression series at low temperatures. None of th... | pi-conjugated systems; Distyrylbenzene; Vibrational side-bands; Vibronic structures; DSB | 2005-02 |
