Now showing items 1-20 of 72

  • 2 μm solid-state laser mode-locked by single-layer graphene 

    Lagatsky, A. A.; Sun, Z.; Kulmala, T. S.; Sundaram, R. S.; Milana, S.; Torrisi, F.; Antipov, O. L.; Lee, Y.; Ahn, J. H.; Brown, C. T. A.; Sibbett, W.; Ferrari, A. C. (2013-01-07) - Journal article
    We report a 2 μm ultrafast solid-state Tm : Lu2O3 laser, mode-locked by single-layer graphene, generating transform-limited similar to 410 fs pulses, with a spectral width similar to 11.1 nm at 2067 nm. The maximum average ...
  • Able-bodied wild chimpanzees imitate a motor procedure used by a disabled individual to overcome handicap 

    Hobaiter, Catherine; Byrne, Richard William (2010-08-05) - Journal article
    Chimpanzee culture has generated intense recent interest, fueled by the technical complexity of chimpanzee tool-using traditions; yet it is seriously doubted whether chimpanzees are able to learn motor procedures by imitation ...
  • Actin turnover is required for myosin-dependent mitochondrial movements in Arabidopsis root hairs 

    Zheng, Maozhong; Beck, Martina; Muller, Jens; Wang, Xiaohua; Wang, Qinli; Baluska, Frantisek; Logan, David; Samaj, Jozef; Lin, Jinxing (2009-06) - Journal article
    Background: Previous studies have shown that plant mitochondrial movements are myosin-based along actin filaments, which undergo continuous turnover by the exchange of actin subunits from existing filaments. Although earlier ...
  • Assessing mood in older adults : a conceptual review of methods and approaches 

    Brown, Laura; Astell, Arlene Jean (2012-02-20) - Journal article
    Background: Accurate measures of mood state are important for understanding and optimizing health and well-being in later life. A range of different mood assessment measures is available, reflecting the variety of ways in ...
  • Association between socioeconomic factors and cancer risk : a population cohort study in Scotland (1991-2006) 

    Sharpe, Katharine H.; McMahon, Alex D.; Raab, Gillian M.; Brewster, David H.; Conway, David I. (2014-02-27) - Journal article
    Background: Lung and upper aero-digestive tract (UADT) cancer risk are associated with low socioeconomic circumstances and routinely measured using area socioeconomic indices. We investigated effect of country of birth, ...
  • Association of day length and weather conditions with physical activity levels in older community dwelling people 

    Witham, Miles D; Donnan, Peter T; Vadiveloo, Thenmalar; Sniehotta, Falko F; Crombie, Iain K; Feng, Zhiqiang; McMurdo, Marion E T (2014-01-30) - Journal article
    Background: Weather is a potentially important determinant of physical activity. Little work has been done examining the relationship between weather and physical activity, and potential modifiers of any relationship in ...
  • Blocking Variant Surface Glycoprotein synthesis in Trypanosoma brucei triggers a general arrest in translation initiation 

    Smith, Terry K; Vasileva, Nadina; Gluenz, Eva; Terry, Stephen; Portman, Neil; Kramer, Susanne; Carrington, Mark; Michaeli, Shulamit; Gull, Keith; Rudenko, Gloria (2009-10-26) - Journal article
    Background: The African trypanosome Trypanosoma brucei is covered with a dense layer of Variant Surface Glycoprotein (VSG), which protects it from lysis by host complement via the alternative pathway in the mammalian ...
  • Bonobos extract meaning from call sequences 

    Clay, Zanna; Zuberbuehler, Klaus (2011-04-27) - Journal article
    Studies on language-trained bonobos have revealed their remarkable abilities in representational and communication tasks. Surprisingly, however, corresponding research into their natural communication has largely been ...
  • Broadly tunable femtosecond Tm:Lu2O3 ceramic laser operating around 2070 nm 

    Lagatsky, Alexander A.; Antipov, Oleg L.; Sibbett, Wilson (2012-08-13) - Journal article
    Femtosecond mode locking of a Tm-doped Lu2O3 ceramic laser is reported. Transform-limited pulses as short as 180 fs are generated at 2076 nm with an average output power of 400 mW and a pulse repetition frequency of 121.2 ...
  • Cascaded modulator architecture for WDM applications 

    Debnath, Kapil; O'Faolain, Liam; Gardes, Frederic Y.; Steffan, Andreas G.; Reed, Graham T.; Krauss, Thomas F. (2012-12-03) - Journal article
    Integration density, channel scalability, low switching energy and low insertion loss are the major prerequisites for on-chip WDM systems. A number of device geometries have already been demonstrated that fulfill these ...
  • Clicking in Shallow Rivers : Short-Range Echolocation of Irrawaddy and Ganges River Dolphins in a Shallow, Acoustically Complex Habitat 

    Jensen, Frants; Rocco, Alice; Mansur, Rubaiyat; Smith, Brian; Janik, Vincent M.; Madsen, Peter (2013-04-03) - Journal article
    Toothed whales (Cetacea, odontoceti) use biosonar to navigate their environment and to find and catch prey. All studied toothed whale species have evolved highly directional, high-amplitude ultrasonic clicks suited for ...
  • Combining individual animal movement and ancillary biotelemetry data to investigate population-level activity budgets 

    McClintock, Brett Thomas; Russell, Deborah Jill Fraser; Matthiopoulos, Jason; King, Ruth (2013-04-01) - Journal article
    Recent technological advances have permitted the collection of detailed animal location and ancillary biotelemetry data that facilitate inference about animal movement and associated behaviors. However, these rich sources ...
  • Continuous wave terahertz radiation from an InAs/GaAs quantum-dot photomixer device 

    Kruczek, T.; Leyman, R.; Carnegie, D.; Bazieva, N.; Erbert, G.; Schulz, S.; Reardon, C.; Rafailov, E. U. (2012-08-20) - Journal article
    Generation of continuous wave radiation at terahertz (THz) frequencies from a heterodyne source based on quantum-dot (QD) semiconductor materials is reported. The source comprises an active region characterised by multiple ...
  • CRISPR interference : a structural perspective 

    Reeks, Judith Anne; Naismith, Jim; White, Malcolm F (2013-06) - Journal item
    CRISPR (cluster of regularly interspaced palindromic repeats) is a prokaryotic adaptive defence system, providing immunity against mobile genetic elements such as viruses. Genomically encoded crRNA (CRISPR RNA) is used by ...
  • CRISPR-mediated targeted mRNA degradation in the archaeon Sulfolobus solfataricus 

    Zebec, Z.; Manica, A.; Zhang, J.; White, M.F.; Schleper, C. (2014-04-01) - Journal article
    The recently discovered clustered regularly interspaced short palindromic repeat (CRISPR)-mediated virus defense represents an adaptive immune system in many bacteria and archaea. Small CRISPR RNAs cause cleavage of ...
  • Diode-pumped femtosecond solid-state waveguide laser with a 4.9 GHz pulse repetition rate 

    Choudhary, A.; Lagatsky, Alexander Alexandrovich; Kannan, P.; Sibbett, Wilson; Brown, C Tom A; Shepherd, D. P. (2012-11-01) - Journal article
    We report on the first demonstration of a passively mode-locked, diode-pumped, monolithic Yb:glass channel waveguide laser that incorporates a semiconductor saturable absorber mirror. Stable and self-starting mode-locking ...
  • Divergence of Casimir stress in inhomogeneous media 

    Simpson, William M. R.; Horsley, S. A. R.; Leonhardt, U. (2013-04-05) - Journal article
    We examine the local behavior of the regularized stress tensor commonly used in calculations of the Casimir force for a dielectric medium inhomogeneous in one direction. It is shown that the usual expression for the stress ...
  • The encoding of individual identity in dolphin signature whistles : how much information is needed? 

    Kershenbaum, Arik; Sayigh, Laela; Janik, Vincent M. (2013-10-23) - Journal article
    Bottlenose dolphins (Tursiops truncatus) produce many vocalisations, including whistles that are unique to the individual producing them. Such “signature whistles” play a role in individual recognition and maintaining group ...
  • Estimating resource acquisition and at-sea body condition of a marine predator 

    Schick, Robert Schilling; New, Leslie; Thomas, Len; Costa, Daniel; Hindell, Mark; McMahon, Clive; Robinson, Patrick; Simmons, Samantha; Thums, Michele; Harwood, John; Clark, James (2013) - Journal article
    (1) Body condition plays a fundamental role in many ecological and evolutionary processes at a variety of scales and across a broad range of animal taxa. An understanding of how body condition changes at fine spatial and ...
  • Exploring the ultrashort pulse laser parameter space for membrane permeabilisation in mammalian cells. 

    Rudhall, Andrew Peter; Antkowiak, Maciej; Tsampoula, Xanthi; Mazilu, Michael; Metzger, N Klaus; Gunn-Moore, Frank J; Dholakia, Kishan (2012) - Journal article
    The use of ultrashort femtosecond pulsed lasers to effect membrane permeabilisation and initiate both optoinjection and transfection of cells has recently seen immense interest. We investigate femtosecond laser-induced ...