Now showing items 2964-2983 of 18292

    • Controlled Preparation and Detection of d-Wave Superfluidity in Two-Dimensional Optical Superlattices 

      Rey, A. M.; Sensarma, R.; Fölling, S.; Greiner, Markus; Demler, Eugene A.; Lukin, Mikhail D. (Institute of Physics, 2009)
      \(d\)-wave Cooper pairs are believed to be the key for understanding the phenomenon of high-temperature superconductivity in cuprates. These superconductors are an example of the emergence of strong pairing in systems with ...
    • Controlled production of emulsion drops using an electric field in a flow-focusing microfluidic device 

      Kim, Haejune; Luo, Dawei; Link, Darren; Weitz, David A.; Marquez, Manuel; Cheng, Zhengdong (AIP Publishing, 2007)
      We describe a flexible emulsification method using an electric field to generate droplets in a hydrodynamic-flow-focusing geometry in microchannels. The droplet size is controlled by the ratio of inner and outer flow rates ...
    • Controlled Tuning of Whispering Gallery Modes of GaN/InGaN Microdisk Cavities 

      Aharonovich, Igor; Niu, Nan; Rol, Fabian; Russell, Kasey Joe; Woolf, Alexander J; El-Ella, Haitham A.R.; Kappers, Menno J.; Hu, Evelyn (American Institute of Physics, 2011)
      Controlled tuning of the whispering gallery modes of GaN/InGaN microdisk cavities is demonstrated. The whispering gallery mode (WGM) tuning is achieved at room temperature by immersing the microdisks in water and irradiating ...
    • Controlling Airborne Cues to Study Small Animal Navigation 

      Gershow, Marc; Berck, Matthew E; Mathew, Dennis; Luo, Linjiao; Kane, Elizabeth Anne; Carlson, John R; Samuel, Aravinthan DT (Nature Publishing Group, 2012)
      Small animals such as nematodes and insects analyze airborne chemical cues to infer the direction of favorable and noxious locations. In these animals, the study of navigational behavior evoked by airborne cues has been ...
    • Controlling droplet incubation using close-packed plug flow 

      Mary, Pascaline; Abate, Adam R.; Agresti, Jeremy J.; Weitz, David A. (AIP Publishing, 2011)
      Controlling droplet incubation is critical for droplet-based microfluidic applications; however, current techniques are either of limited precision or place strict limits on the incubation times that can be achieved. Here, ...
    • Controlling Interneuron Activity in Caenorhabditis Elegans to Evoke Chemotactic Behaviour 

      Kocabas, Askin; Shen, Ching-Han; Guo, Zengcai V.; Ramanathan, Sharad (Nature Publishing Group, 2012)
      Animals locate and track chemoattractive gradients in the environment to find food. With its small nervous system, Caenorhabditis elegans is a good model system in which to understand how the dynamics of neural activity ...
    • Controlling Material Reactivity Using Architecture 

      Sullivan, Kyle T.; Zhu, Cheng; Duoss, Eric B.; Gash, Alexander E.; Kolesky, David Barry; Kuntz, Joshua D.; Lewis, Jennifer; Spadaccini, Christopher M. (Wiley-Blackwell, 2015)
      3D-printing methods are used to generate reactive material architectures. Several geometric parameters are observed to influence the resultant flame propagation velocity, indicating that the architecture can be utilized ...
    • Controlling Site to Evaluate History: Vegetation Patterns of a New England Sand Plain 

      Motzkin, Glenn; Foster, David Russell; Allen, Arthur; Harrod, Jonathan; Boone, Richard (Wiley-Blackwell, 1996)
      The widespread and long-lasting impact of human activity on natural ecosystems indicates that land-use history must he treated as an integral aspect of ecological study and a critical component of conservation planning. ...
    • Controlling Spatiotemporal Chaos in a Realistic El Niño Prediction Model 

      Tziperman, Eli; Scher, Harvey; Zebiak, Stephen E.; Cane, Mark A. (American Physical Society, 1997)
      A method for controlling low-order chaotic behavior of continuous spatiotemporal systems is developed and demonstrated in a complex, realistic 3D partial differential equation model that is used successfully for predicting ...
    • Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices 

      Duan, L.-M.; Demler, Eugene A.; Lukin, Mikhail D. (American Physical Society (APS), 2003)
      We describe a general technique that allows one to induce and control strong interaction between spin states of neighboring atoms in an optical lattice. We show that the properties of spin exchange interactions, such as ...
    • Controls on Development and Diversity of Early Archean Stromatolites 

      Allwood, Abigail C.; Grotzinger, John P.; Knoll, Andrew Herbert; Burch, Ian W.; Anderson, Mark S.; Coleman, Max L.; Kanik, Isik (National Academy of Sciences, 2009)
      The ≈3,450-million-year-old Strelley Pool Formation in Western Australia contains a reef-like assembly of laminated sedimentary accretion structures (stromatolites) that have macroscale characteristics suggestive of ...
    • Controls on the Activation and Strength of a High-Latitude Convective Cloud Feedback 

      Abbot, Dorian; Tziperman, Eli (American Meteorological Society, 2009)
      Previous work has shown that a convective cloud feedback can greatly increase high-latitude surface temperature upon the removal of sea ice and can keep sea ice from forming throughout polar night. This feedback activates ...
    • Controls on the Strength of Coupling Among Climate, Erosion, and Deformation in Two-sided, Frictional Orogenic Wedges at Steady State 

      Whipple, Kelin X.; Meade, Brendan J. (American Geophysical Union, 2004)
      Many important insights regarding the coupling among climate, erosion, and tectonics have come from numerical simulations using coupled tectonic and surface process models. However, analyses to date have left the strength ...
    • Convection from a Source in an Ocean Basin 

      Speer, Kevin; Tziperman, Eli (Elsevier, 1990)
      A model is presented for the deep interior stratification and upwelling in an ocean basin connected to a marginal sea. Three elements make up the model: a marginal sea, a turbulent boundary current and an interior region. ...
    • Convective injection and photochemical decay of peroxides in the tropical upper troposphere: Methyl iodide as a tracer of marine convection 

      Cohan, Daniel S.; Schultz, Martin G.; Jacob, Daniel James; Heikes, Brian G.; Blake, Donald R. (Wiley-Blackwell, 1999)
      The convective injection and subsequent fate of the peroxides H2O2 and CH3OOH in the upper troposphere is investigated using aircraft observations from the NASA Pacific Exploratory Mission-Tropics A (PEM-Tropics A) over ...
    • Convective outflow of South Asian pollution: A global CTM simulation compared with EOS MLS observations 

      Li, Qinbin; Jiang, Jonathan H.; Wu, Dong L.; Read, William G.; Livesey, Nathaniel J.; Waters, Joe W.; Zhang, Yongsheng; Wang, Bin; Filipiak, Mark J.; Davis, Cory P.; Turquety, Solene; Wu, Shiliang; Park, Rokjin J.; Yantosca, Robert M.; Jacob, Daniel James (Wiley-Blackwell, 2005)
      A global 3-D chemical transport model is used to analyze observations of carbon monoxide (CO) and upper tropospheric clouds from the EOS Microwave Limb Sounder (MLS). MLS observations during 25 August–6 September 2004 ...
    • Convective transport over the central United States and its role in regional CO and ozone budgets 

      Thompson, Anne Elizabeth; Pickering, Kenneth E.; Dickerson, Russell R.; Ellis, William G.; Jacob, Daniel James; Scala, John R.; Tao, Wei-Kuo; McNamara, Donna P.; Simpson, Joanne (Wiley-Blackwell, 1994)
      We have constructed a regional budget for boundary layer carbon monoxide over the central United States (32.5°–50°N, 90°–105°W), emphasizing a detailed evaluation of deep convective vertical fluxes appropriate for the month ...
    • Convergence 

      Barro, Robert J.; Sala-i-Martin, Xavier (University of Chicago Press, 1992)
      A key economic issue is whether poor countries or regions tend to grow faster than rich ones: are there automatic forces that lead to convergence over time in the levels of per capita income and product? We use the ...
    • Convergence in Multispecies Interactions 

      Bittleston, Leonora Sophia; Pierce, Naomi E.; Ellison, Aaron M.; Pringle, Anne (Elsevier BV, 2016)
      The concepts of convergent evolution and community convergence highlight how selective pressures can shape unrelated organisms or communities in similar ways. We propose a related concept, convergent interactions, to ...
    • Convergence in pigmentation at multiple levels: mutations, genes and function 

      Manceau, M; Domingues, V. S.; Linnen, Catherine Ramsay; Rosenblum, E. B.; Hoekstra, Hopi E. (The Royal Society, 2010)
      Convergence—the independent evolution of the same trait by two or more taxa—has long been of interest to evolutionary biologists, but only recently has the molecular basis of phenotypic convergence been identified. Here, ...