Now showing items 18-37 of 1635

    • Actinide chemistry using singlet-paired coupled cluster and its combinations with density functionals 

      Garza, Alejandro J.; Alencar, Ana G. Sousa; Scuseria, Gustavo E. (2016)
      Singlet-paired coupled cluster doubles (CCD0) is a simplification of CCD that relinquishes a fraction of dynamic correlation in order to be able to describe static correlation. Combinations of CCD0 with density functionals ...
    • Active patterning and asymmetric transport in a model actomyosin network 

      Wang, Shenshen; Wolynes, Peter G. (2013)
      Cytoskeletal networks, which are essentially motor-filament assemblies, play a major role in many developmental processes involving structural remodeling and shape changes. These are achieved by nonequilibrium self-organization ...
    • Active quantum plasmonics 

      Marinica, Dana Codruta; Zapata, Mario; Nordlander, Peter; Kazansky, Andrey K.; Echenique, Pedro M.; Aizpurua, Javier; Borisov, Andrei G. (2015)
      The ability of localized surface plasmons to squeeze light and engineer nanoscale electromagnetic fields through electron-photon coupling at dimensions below the wavelength has turned plasmonics into a driving tool in a ...
    • Adaptation of Enterococcus faecalis to Daptomycin Reveals an Ordered Progression to Resistance 

      Miller, Corwin; Kong, Jiayi; Tran, Truc T.; Arias, Cesar A.; Saxer, Gerda; Shamoo, Yousif (2013)
      With increasing numbers of hospital-acquired antibiotic resistant infections each year and staggering health care costs, there is a clear need for new antimicrobial agents, as well as novel strategies to extend their ...
    • The Adhesion-GPCR BAI1 Regulates Synaptogenesis by Controlling the Recruitment of the Par3/Tiam1 Polarity Complex to Synaptic Sites 

      Duman, Joseph G.; Tzeng, Christopher P.; Tu, Yen-Kuei; Munjal, Tina; Schwechter, Brandon; Ho, Tammy Szu-Yu; Tolias, Kimberley F. (2013)
      Excitatory synapses are polarized structures that primarily reside on dendritic spines in the brain. The small GTPase Rac1 regulates the development and plasticity of synapses and spines by modulating actin dynamics. By ...
    • Adiabatic cooling of atoms by an intense standing wave 

      Chen, Jian; Story, J.G.; Tollett, J.J.; Hulet, Randall G. (1992)
      Lithium atoms channeled in the nodes of an intense standing-wave radiation field are cooled to near the recoil limit by adibatically reducing the radiation intensity. The final momentum distribution has a narrow component ...
    • Adsorption and Unfolding of a Single Protein Triggers Nanoparticle Aggregation 

      Dominguez-Medina, Sergio; Kisley, Lydia; Tauzin, Lawrence J.; Hoggard, Anneli; Shuang, Bo; Indrasekara, A. Swarnapali D.S.; Chen, Sishan; Wang, Lin-Yung; Derry, Paul J.; Liopo, Anton; Zubarev, Eugene R.; Landes, Christy F.; Link, Stephan (2016)
      The response of living systems to nanoparticles is thought to depend on the protein corona, which forms shortly after exposure to physiological fluids and which is linked to a wide array of pathophysiologies. A mechanistic ...
    • Adsorption of a Protein Monolayer via Hydrophobic Interactions Prevents Nanoparticle Aggregation under Harsh Environmental Conditions 

      Dominguez-Medina, Sergio; Blankenburg, Jan; Olson, Jana; Landes, Christy F.; Link, Stephan (2013)
      We find that citrate-stabilized gold nanoparticles aggregate and precipitate in saline solutions below the NaCl concentration of many bodily fluids and blood plasma. Our experiments indicate that this is due to complexation ...
    • Aged black carbon in marine sediments and sinking particles 

      Coppola, Alysha I.; Ziolkowski, Lori A.; Masiello, Caroline A.; Druffel, Ellen R.M. (2014)
      We report measurements of oceanic black carbon (BC) to determine the sources of BC to abyssal marine sediments in the northeast Pacific Ocean. We find that the average 14C age of BC is older (by 6200 ± 2200 14C years) than ...
    • Airborne radar sounding evidence for deformable sediments and outcropping bedrock beneath Thwaites Glacier, West Antarctica 

      Schroeder, Dustin M.; Blankenship, Donald D.; Young, Duncan A.; Witus, Alexandra E.; Anderson, John B. (2014)
      The geologic and morphologic records of prior ice sheet configurations show evidence of rapid, back-stepping, meltwater intensive retreats. However, the potential for such a retreat in a contemporary glacier depends on the ...
    • Alignment of the CMS tracker with LHC and cosmic ray data 

      Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2014)
      The central component of the CMS detector is the largest silicon tracker ever built. The precise alignment of this complex device is a formidable challenge, and only achievable with a significant extension of the technologies ...
    • All-optical production of a lithium quantum gas using narrow-line laser cooling 

      Duarte, P.M.; Hart, R.A.; Hitchcock, J.M.; Corcovilos, T.A.; Yang, T.-L.; Reed, A.; Hulet, R.G. (2011)
      We have used the narrow 2S1/2→3P3/2 transition in the ultraviolet (uv) to laser cool and magneto-optically trap (MOT) 6Li atoms. Laser cooling of lithium is usually performed on the 2S1/2→2P3/2 (D2) transition, and ...
    • All-time dynamics of continuous-time random walks on complex networks 

      Teimouri, Hamid; Kolomeisky, Anatoly B. (2013)
      The concept of continuous-time random walks (CTRW) is a generalization of ordinary random walk models, and it is a powerful tool for investigating a broad spectrum of phenomena in natural, engineering, social, and economic ...
    • AlloRep: A Repository of Sequence, Structural and Mutagenesis Data for the LacI/GalR Transcription Regulators 

      Sousa, Filipa L.; Parente, Daniel J.; Shis, David L.; Hessman, Jacob A.; Chazelle, Allen; Bennett, Matthew R.; Teichmann, Sarah A.; Swint-Kruse, Liskin (2016)
      Protein families evolve functional variation by accumulating point mutations at functionally important amino acid positions. Homologs in the LacI/GalR family of transcription regulators have evolved to bind diverse DNA ...
    • Alpha-hemoglobin stabilizing protein (AHSP) markedly decreases the redox potential and reactivity of alpha subunits of human HbA with hydrogen peroxide 

      Mollan, Todd L.; Banerjee, Sambuddha; Wu, Gang; Siburt, Claire J. Parker; Tsai, Ah-Lim; Olson, John S.; Weiss, Mitchell J.; Crumbliss, Alvin L.; Alayash, Abdu I. (2012)
      Background: AHSP modifies redox properties of bound α subunits. Results: Isolated hemoglobin subunits exhibit significantly different redox properties compared to HbA. A significant decrease in the reduction potential of ...
    • Altered Backbone and Side-Chain Interactions Result in Route Heterogeneity during the Folding of Interleukin-1b (IL-1b) 

      Capraro, Dominique T.; Lammert, Heiko; Heidary, David K.; Roy, Melinda; Gross, Larry A.; Onuchic, José N.; Jennings, Patricia A. (2013-08)
      Deletion of the b-bulge trigger-loop results in both a switch in the preferred folding route, from the functional loop packing folding route to barrel closure, as well as conversion of the agonist activity of IL-1b into ...
    • An alternative formula for approximate extended Born inversion 

      Hou, Jie; Symes, William W. (2017)
      Various modifications of reverse time migration (RTM) provide asymptotic inverses to the subsurface offset extended Born modeling operator for constant-density acoustics. These approximate inverses have the same quality ...
    • Aluminum Nanocrystals 

      McClain, Michael J.; Schlather, Andrea E.; Ringe, Emilie; King, Nicholas S.; Liu, Lifei; Manjavacas, Alejandro; Knight, Mark W.; Kumar, Ish; Whitmire, Kenton; Everitt, Henry O.; Nordlander, Peter; Halas, Naomi J. (2015)
      We demonstrate the facile synthesis of high purity aluminum nanocrystals over a range of controlled sizes from 70 to 220 nm diameter with size control achieved through a simple modification of solvent ratios in the reaction ...
    • Alumoxane/ferroxane nanoparticles for the removal of viral pathogens: the importance of surface functionality to nanoparticle activity 

      Maguire-Boyle, Samuel J.; Liga, Michael V.; Li, Qilin; Barron, Andrew R. (2012)
      A bi-functional nano-composite coating has been created on a porous Nomex fabric support as a trap for aspirated virus contaminated water. Nomex fabric was successively dip-coated in solutions containing cysteic acid ...
    • Ambient solid-state mechano-chemical reactions between functionalized carbon nanotubes 

      Kabbani, Mohamad A.; Tiwary, Chandra Sekhar; Autreto, Pedro A.S.; Brunetto, Gustavo; Som, Anirban; Krishnadas, K.R.; Ozden, Sehmus; Hackenberg, Ken P.; Gong, Yongi; Galvao, Douglas S.; Vajtai, Robert; Kabbani, Ahmad T.; Pradeep, Thalappil; Ajayan, Pulickel M. (2015)
      Carbon nanotubes can be chemically modified by attaching various functionalities to their surfaces, although harsh chemical treatments can lead to their break-up into graphene nanostructures. On the other hand, direct ...