Browsing Citations Only by Title

Now showing items 598-617 of 990

    • Natural products via Reetz chemistry synthesis of (+/-)-Cuparene 

      Favaloro, Frank; Goudreau, Christina; Collison, Christina; Mundy, Bradford; Poon, Thomas; Slobodzian, Sergei; Jensen, Bruce (Georg Thieme Verlag, 1998-06)
      A concise synthesis of (+/-)-cuparene via Grignard, trimethylaluminum and dimethyltitanium dichloride (Reetz Alkylation) reactions to form the quaternary centers of (+/-)-cuparene is reported.

    • The nature of the HE0450-2958 system 

      Merritt, David; Bergmann, Thaisa; Robinson, Andrew; Batcheldor, Dan; Axon, David; Fernandes, Roberto (Blackwell Publishing, 2005-11-10)
      Magain et al. (2005) argued that the host galaxy of the quasar in HE0450-2958 is substantially under-luminous given the likely mass of its nuclear black hole. Using kinematical information from the spectra of the quasar ...

    • The nature of the optical: Radio correlations for powerful radio galaxies 

      Tadhunter, Clive; Morganti, Raffaella; Robinson, Andrew; Dickson, Robert; Villar-Martin, Montse; Fosbury, Robert (Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 1998-08)
      The nature of the optical–radio correlations for powerful radio galaxies is investigated using spectroscopic observations of a complete sample of southern 2Jy radio sources. In line with previous work, we find that significant ...

    • The Nazarov cyclization in organic synthesis. Recent advances 

      Frontier, Alison; Collison, Christina (Elsevier Science B.V., 2005-08-08)
      Recent synthetic advancements involving the Nazarov electrocyclization are reviewed. Aspects of reactivity and stereochemistry are discussed, as well as the continuing development of the methodology for application to ...

    • A Near stellar occultation by P/Grigg-Skjellerup 

      Ninkov, Zoran (International Society for Optical Engineering (SPIE), 1994-03)
      P/Grigg-Skjellerup was observed to pass within 200 km of the line of sight to an anonymous faint star on the 1992 July 8 UT. The star's brightness was attenuated by 35% at closest approach by the comet. This result, combined ...

    • Near-millimeter free electron lasers with small period wigglers and sheet electron beams 

      Granatstein, V.; Antonsen, T.; Booske, J.; Destler, William; Latham, P.; Levush, B.; Mayergoyz, I.; Radack, D.; Segalov, Z.; Serbeto, A. (Elsevier, 1988-10)
      Electron cyclotron resonance heating (ECRH) of plasmas in magnetic fusion research and space-borne radar systems are both projected to require high power radiation sources at wavelength λ not, vert, similar 1 mm. For ECRH, ...

    • Necessary and sufficient conditions for the equivalence of economic and ecological criteria in range management 

      Batabyal, Amitrajeet (Elsevier, 2005)
      For rangelands managed with spatial and temporal controls, [a] the long run expected net cost of management operations, [b] the long run rate of moving grazing from one paddock to another, and [c] the long run rate of ...

    • Necessary conditions for a semigroup ring to be an integral CRM-ring with identity 

      Engel, Alejandro (Springer New York, 1976-12)
      The immersion of semigroup rings into division rings gave rise to Tamari's [6] hierarchical classification of semigroups. Some basic properties of this classification were given elsewhere ([1] , [2] and [3]), pointing out ...

    • Neural network applications to the color scanner and printer calibrations 

      Kang, Henry; Anderson, Peter (International Society for Optical Engineering (SPIE), 1992-04-01)
      In the context of colorimetric matching, the intent of color scanner and printer calibrations is to characterize the device-dependent responses to the device-independent representations such as CIEXYZ or CIE 1976 L*a*b* ...

    • A new algorithm for global forest fire detection using multispectral images 

      Li, Ying; Vodacek, Anthony; Kremens, Robert; Ononye, Ambrose (The International Society for Optical Engineering (SPIE), 2003-09)
      Fire detection has been an active research field for many years and a number of algorithms have been proposed. These algorithms, however, are often inflexible in dealing with the spatial and temporal heterogeneity of ...

    • New forms of consumption: Consumers, culture, and commodification 

      Manning, Robert (Contemporary Sociology. Nov 2003. 32. (6). 675., 2003-11)
      New Forms of Consumption attempts to offer both theoretical and historical guidance to the contemporary study of the sociology of consumption in "late capitalism." The central organizing theme of the volume, edited by Mark ...

    • New modes in a plasma with periodic boundaries: the origin of the dense spectrum 

      Lou, W.; Carmel, Y.; Antonsen, T.; Destler, William; Granatstein, V. (The American Physical Society, 1991-10-28)
      We analyze the new features of the low-frequency (£0 < £Op) modes of wave propagation in a plasma filled, spatially periodic structure. The spectrum of these modes is drastically modified by the periodic boundaries in a ...

    • NF-κB Activation is delayed in mouse L929 cells infected with interferon suppressing, but not inducing, vesicular stomatitis virus strains 

      Boulares, A. Hamid; Ferran, Maureen; Lucas-Lenard, J. (Elsevier: Virology, 1996-03-01)
      Vesicular stomatitis virus (VSV) mutant T1026R1 of the Indiana (IN) serotype is a good inducer of interferon (IFN). This mutant was used to study the activation of NF-κB, a transcription factor necessary for IFN induction, ...

    • NF1 mRNA isoform expression in PC12 cells: modulation by extrinsic factors 

      Metheny, Linda; Skuse, Gary (Elsevier: Experimental Cell Research, 1996-10)
      The rat neurofibromatosis type I (NF1) gene expresses several transcript isoforms which differ by the alternative splicing of exons 23a and 23b in the region encoding the GTPase-activating protein-related domain. The ...

    • A NICMOS imaging study of high-z quasar host galaxies 

      Kukula, Marek; Dunlop, James; McClure, Ross; Miller, Lance; Percival, Will; Baum, Stefi; O'Dea, Christopher (Blackwell Publishing, 2001-10)
      We present the first results from a major Hubble Space Telescope programme designed to investigate the cosmological evolution of quasar host galaxies from z~=2 to the present day. Here we describe J and H-band NICMOS ...

    • No supermassive black hole in M33? 

      Merritt, David; Ferrarese, Laura; Joseph, Charles (Science, 2001-08-10)
      We analyze optical long-slit spectroscopy of the nucleus of M33 obtained from the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope. Rather than the steep rise expected within the radius of influence ...

    • Non-adiabatic transition of beams in gyrotrons through various magnetic field profiles 

      Singh, A.; Granatstein, V.; Casey, C.; Destler, William (Taylor & Francis, 1991)
      The achievement of efficiency enhancement in small-orbit gyrotrons by using depressed collector techniques requires precisely configured magnetic field profiles which present adiabatic as well as non-adiabatic transitions ...

    • Non-hydrolytic release of iron from ferrienterobactin analogs by extracts of bacillus subtilis 

      Lodge, Jeffrey; Gaines, C.; Arceneaux, J.; Byers, B. (Elsevier: Biochemical and Biophysical Research Communications, 1980-12-31)
      The ferric chelates of the microbial siderophore enterobactin and of two synthetic analogs of enterobactin were sources of iron for growth of Bacillus subtilis WB2802. The ferrisiderophore reductase system in cell-free ...