Now showing items 21-40 of 768

    • Mode of Action of Antimicrobial Peptides on E. coli Spheroplasts 

      Sun, Yen; Sun, Tzu-Lin; Huang, Huey W. (2016)
      We investigated the phenomena of antimicrobial peptides (AMPs) directly attacking the cytoplasmic membranes of Escherichia coli spheroplasts. We developed a procedure for fluorescence recovery after photobleaching to examine ...
    • Phenotypic plasticity in prostate cancer: role of intrinsically disordered proteins 

      Mooney, Steven M.; Jolly, Mohit Kumar; Levine, Herbert; Kulkarni, Prakash (2016)
      A striking characteristic of cancer cells is their remarkable phenotypic plasticity, which is the ability to switch states or phenotypes in response to environmental fluctuations. Phenotypic changes such as a partial or ...
    • Singlet-paired coupled cluster theory for open shells 

      Gomez, John A.; Henderson, Thomas M.; Scuseria, Gustavo E. (2016)
      Restricted single-reference coupled cluster theory truncated to single and double excitations accurately describes weakly correlated systems, but often breaks down in the presence of static or strongcorrelation. Good coupled ...
    • Comparison study of ring current simulations with and without bubble injections 

      Yang, Jian; Toffoletto, Frank R.; Wolf, Richard A. (2016)
      For many years, stand-alone ring current models have been successfully producing storm time ring current enhancements without specifying explicit localized transient injections along their outer boundaries. However, both ...
    • Magnetic and Ising quantum phase transitions in a model for isoelectronically tuned iron pnictides 

      Wu, Jianda; Si, Qimiao; Abrahams, Elihu (2016)
      Considerations of the observed bad-metal behavior in Fe-based superconductors led to an early proposal for quantum criticality induced by isoelectronic P for As doping in iron arsenides, which has since been experimentally ...
    • Single-molecule force measurements of the polymerizing dimeric subunit of von Willebrand factor 

      Wijeratne, Sithara S.; Li, Jingqiang; Yeh, Hui-Chun; Nolasco, Leticia; Zhou, Zhou; Bergeron, Angela; Frey, Eric W.; Moake, Joel L.; Dong, Jing-fei; Kiang, Ching-Hwa (2016)
      Von Willebrand factor (VWF) multimers are large adhesive proteins that are essential to the initiation of hemostatic plugs at sites of vascular injury. The binding of VWF multimers to platelets, as well as VWF proteolysis, ...
    • Single molecule targeted sequencing for cancer gene mutation detection 

      Gao, Yan; Deng, Liwei; Yan, Qin; Gao, Yongqian; Wu, Zengding; Cai, Jinsen; Ji, Daorui; Li, Gailing; Wu, Ping; Jin, Huan; Zhao, Luyang; Liu, Song; Ge, Liangjin; Deem, Michael W.; He, Jiankui (2016)
      With the rapid decline in cost of sequencing, it is now affordable to examine multiple genes in a single disease-targeted clinical test using next generation sequencing. Current targeted sequencing methods require a separate ...
    • Spin excitations in optimally P-dopedᅠBaFe2(As0.7P0.3)2 superconductor 

      Hu, Ding; Yin, Zhiping; Zhang, Wenliang; Ewings, R.A.; Ikeuchi, Kazuhiko; Nakamura, Mitsutaka; Roessli, Bertrand; Wei, Yuan; Zhao, Lingxiao; Chen, Genfu; Li, Shiliang; Luo, Huiqian; Haule, Kristjan; Kotliar, Gabriel; Dai, Pengcheng (2016)
      We use inelastic neutron scattering to study the temperature and energy dependence of spin excitations in an optimally P-doped BaFe2(As0.7P0.3)2 superconductor (Tc=30 K) throughout the Brillouin zone. In the undoped state, ...
    • Photo-induced force mapping of plasmonic nanostructures 

      Tumkur, Thejaswi U.; Yang, Xiao; Cerjan, Benjamin; Halas, Naomi J.; Nordlander, Peter; Thomann, Isabell (2016)
      The ability to image the optical near-fields of nanoscale structures, map their morphology and concurrently obtain spectroscopic information, all with high spatiotemporal resolution, is a highly sought-after technique in ...
    • Modulated magnetism and anomalous electronic transport in Ce3Cu4As4O2 

      Wang, Jiakui K.; Wu, Shan; Qiu, Yiming; Rodriguez-Rivera, Jose A.; Huang, Qingzhen; Broholm, C.; Morosan, E. (2016)
      The complex magnetism and transport properties of tetragonal Ce3Cu4As4O2 were examined through neutron scattering and physical property measurements on polycrystalline samples. The lamellar structure consists of alternating ...
    • Molecular stripping, targets and decoys as modulators of oscillations in the NF-κB/IκBα/DNA genetic network 

      Wang, Zhipeng; Potoyan, Davit A.; Wolynes, Peter G. (2016)
      Eukaryotic transcription factors in the NF-κB family are central components of an extensive genetic network that activates cellular responses to inflammation and to a host of other external stressors. This network consists ...
    • Stability of High-Density Two-Dimensional Excitons against a Mott Transition in High Magnetic Fields Probed by Coherent Terahertz Spectroscopy 

      Zhang, Qi; Wang, Yongrui; Gao, Weilu; Long, Zhongqu; Watson, John D.; Manfra, Michael J.; Belyanin, Alexey; Kono, Junichiro (2016)
      We have performed time-resolved terahertz absorption measurements on photoexcited electron-hole pairs in undoped GaAs quantum wells in magnetic fields. We probed both unbound- and bound-carrier responses via cyclotron ...
    • Modularity enhances the rate of evolution in a rugged fitness landscape 

      Park, Jeong-Man; Chen, Man; Wang, Dong; Deem, Michael W. (2015)
      Biological systems are modular, and this modularity affects the evolution of biological systems over time and in different environments. We here develop a theory for the dynamics of evolution in a rugged, modular fitness ...
    • On the contribution of plasma sheet bubbles to the storm time ring current 

      Yang, Jian; Toffoletto, Frank R.; Wolf, Richard A.; Sazykin, Stanislav (2015)
      Particle injections occur frequently inside 10 Re during geomagnetic storms. They are commonly associated with bursty bulk flows or plasma sheet bubbles transported from the tail to the inner magnetosphere. Although ...
    • Testing the estimated hypothetical response of a major CME impact on Earth and its implications to space weather 

      Bala, Ramkumar; Reiff, Patricia; Russell, C.T. (2015)
      The high-speed coronal mass ejection (CME), ejected on 23 July 2012, observed by STEREO-A on the same day as the leading edge of the CME arrived at 1AU was unique both in respect to the observed plasma and magnetic structure ...
    • Gas density drops inside dust cavities of transitional disks around young stars observed with ALMA 

      van der Marel, N.; van Dishoeck, E.F.; Bruderer, S.; Pérez, L.; Isella, A. (2015)
      Context. Transitional disks with large dust cavities are important laboratories in which to study planet formation and disk evolution. Cold gas may still be present inside these cavities, but quantying this gas is challenging. ...
    • Magnetic field topology and chemical spot distributions in the extreme Ap star HD 75049 

      Kochukhov, O.; Rusomarov, N.; Valenti, J.A.; Stempels, H.C.; Snik, F.; Rodenhuis, M.; Piskunov, N.; Makaganiuk, V.; Keller, C.U.; Johns-Krull, C.M. (2015)
      Context. Intermediate-mass, magnetic chemically peculiar (Ap) stars provide a unique opportunity to study the topology of stellar magnetic fields in detail and to investigate magnetically driven processes of spot formation. ...
    • Quasispecies theory for evolution of modularity 

      Park, Jeong-Man; Niestemski, Liang Ren; Deem, Michael W. (2015)
      Biological systems are modular, and this modularity evolves over time and in different environments. A number of observations have been made of increased modularity in biological systems under increased environmental ...
    • Neutron spin resonance as a probe of superconducting gap anisotropy in partially detwinned electron underdoped NaFe0.985Co0.015As 

      Zhang, Chenglin; Park, J.T.; Lu, Xingye; Yu, Rong; Li, Yu; Zhang, Wenliang; Zhao, Yang; Lynn, J.W.; Si, Qimiao; Dai, Pengcheng (2015)
      We use inelastic neutron scattering (INS) to study the spin excitations in partially detwinned NaFe0.985Co0.015As which has coexisting static antiferromagnetic (AF) order and superconductivity (Tc=15 K, TN=30 K). In previous ...
    • Depinning transition of bubble phases in a high Landau level 

      Wang, Xuebin; Fu, Hailong; Du, Lingjie; Liu, Xiaoxue; Wang, Pengjie; Pfeiffer, L.N.; West, K.W.; Du, Rui-Rui; Lin, Xi (2015)
      In the higher Landau levels (N>0) a reentrant integer quantum Hall effect (RIQHE) state, which resides at fractional filling factors but exhibits integer Hall plateaus, has been previously observed and studied extensively. ...