Now showing items 1223-1242 of 2298

    • (n,m)-Specific Absorption Cross Sections of Single-Walled Carbon Nanotubes Measured by Variance Spectroscopy 

      Sanchez, Stephen R.; Bachilo, Sergei M.; Kadria-Vili, Yara; Lin, Ching-Wei; Weisman, R. Bruce (2016)
      A new method based on variance spectroscopy has enabled the determination of absolute absorption cross sections for the first electronic transition of 12 (n,m) structural species of semiconducting single-walled carbon ...
    • NAF-1 and mitoNEET are central to human breast cancer proliferation by maintaining mitochondrial homeostasis and promoting tumor growth 

      Sohn, Yang-Sung; Tamir, Sagi; Song, Luhua; Michaeli, Dorit; Matouk, Imad; Conlan, Andrea R.; Harir, Yael; Holt, Sarah H.; Shulaev, Vladimir; Paddock, Mark L.; Hochberg, Abraham; Cabanchick, Ioav Z.; Onuchic, José N.; Jennings, Patricia A.; Nechushtai, Rachel; Mittler, Ron (2013)
      Mitochondria are emerging as important players in the transformation process of cells, maintaining the biosynthetic and energetic capacities of cancer cells and serving as one of the primary sites of apoptosis and autophagy ...
    • NaFe0.56Cu0.44As: A Pnictide Insulating Phase Induced by On-Site Coulomb Interaction 

      Matt, C.E.; Xu, N.; Lv, Baiqing; Ma, Junzhang; Bisti, F.; Park, J.; Shang, T.; Cao, Chongde; Song, Yu; Nevidomskyy, Andriy H.; Dai, Pengcheng; Patthey, L.; Plumb, N.C.; Radovic, M.; Mesot, J.; Shi, M. (2016)
      In the studies of iron pnictides, a key question is whether their bad-metal state from which the superconductivity emerges lies in close proximity with a magnetically ordered insulating phase. Recently, it was found that ...
    • Nanofibrous peptide hydrogel elicits angiogenesis and neurogenesis without drugs, proteins, or cells 

      Moore, Amanda N.; Lopez Silva, Tania L.; Carrejo, Nicole C.; Origel Marmolejo, Carlos A.; Li, I-Che; Hartgerink, Jeffrey D. (2018)
      The design of materials for regenerative medicine has focused on delivery of small molecule drugs, proteins, and cells to help accelerate healing. Additionally, biomaterials have been designed with covalently attached ...
    • Nanofibrous Snake Venom Hemostat 

      Kumar, Vivek A.; Wickremasinghe, Navindee C.; Shi, Siyu; Hartgerink, Jeffrey D. (2015)
      Controlling perioperative bleeding is of critical importance to minimize hemorrhaging and fatality. Patients on anticoagulant therapy such as heparin have diminished clotting potential and are at risk for hemorrhaging. ...
    • Nanoparticles Heat through Light Localization 

      Hogan, Nathaniel J.; Urban, Alexander S.; Ayala-Orozco, Ciceron; Pimpinelli, Alberto; Nordlander, Peter; Halas, Naomi J. (2014)
      Aqueous solutions containing light-absorbing nanoparticles have recently been shown to produce steam at high efficiencies upon solar illumination, even when the temperature of the bulk fluid volume remains far below its ...
    • Nanoparticulate carbon black in cigarette smoke induces DNA cleavage and Th17-mediated emphysema 

      You, Ran; Lu, Wen; Shan, Ming; Berlin, Jacob M.; Samuel, Errol L.G.; Marcano, Daniela C.; Sun, Zhengzong; Sikkema, William K.A.; Yuan, Xiaoyi; Song, Lizhen; Hendrix, Amanda Y.; Tour, James M.; Corry, David B.; Kheradmand, Farrah (2015)
      Chronic inhalation of cigarette smoke is the major cause of sterile inflammation and pulmonary emphysema. The effect of carbon black (CB), a universal constituent of smoke derived from the incomplete combustion of organic ...
    • Nanoscale coupling of endocytic pit growth and stability 

      Lehmann, Martin; Lukonin, Ilya; Noé, Frank; Schmoranzer, Jan; Clementi, Cecilia; Loerke, Dinah; Haucke, Volker (2019)
      Clathrin-mediated endocytosis, an essential process for plasma membrane homeostasis and cell signaling, is characterized by stunning heterogeneity in the size and lifetime of clathrin-coated endocytic pits (CCPs). If and ...
    • NanoSIMS results from olivine-hosted melt embayments: Magma ascent rate during explosive basaltic eruptions 

      Lloyd, Alexander S.; Ruprecht, Philipp; Hauri, Erik H.; Rose, William; Gonnermann, Helge M.; Plank, Terry (2014)
      The explosivity of volcanic eruptions is governed in part by the rate at which magma ascends and degasses. Because the time scales of eruptive processes can be exceptionally fast relative to standard geochronometers, magma ...
    • Nanostructure investigations of nonlinear differential conductance in NdNiO3 thin films 

      Hardy, Will J.; Ji, Heng; Mikheev, Evgeny; Stemmer, Susanne; Natelson, Douglas (2014)
      Transport measurements on thin films of NdNiO3 reveal a crossover to a regime of pronounced nonlinear conduction below the well-known metal-insulator transition temperature. The evolution of the transport properties at ...
    • A Nanostructured Synthetic Collagen Mimic for Hemostasis 

      Kumar, Vivek A.; Taylor, Nichole L.; Jalan, Abhishek A.; Hwang, Lyahn K.; Wang, Benjamin K.; Hartgerink, Jeffrey D. (2014)
      Collagen is a major component of the extracellular matrix and plays a wide variety of important roles in blood clotting, healing, and tissue remodeling. Natural, animal derived, collagen is used in many clinical applications ...
    • A native plant competitor mediates the impact of above- and belowground damage on an invasive tree 

      Carrillo, Juli; Siemann, Evan (2016)
      Plant competition may mediate the impacts of herbivory on invasive plant species through effects on plant growth and defense. This may predictably depend on whether herbivory occurs above or below ground and on relative ...
    • Natural separation of the acyl-CoA ligase reaction results in a non-adenylating enzyme 

      Wang, Nan; Rudolf, Jeffrey D.; Dong, Liao-Bin; Osipiuk, Jerzy; Hatzos-Skintges, Catherine; Endres, Michael; Chang, Chin-Yuan; Babnigg, Gyorgy; Joachimiak, Andrzej; Phillips, George N.; Shen, Ben (2018)
      Acyl-coenzyme A (CoA) ligases catalyze the activation of carboxylic acids via a two-step reaction of adenylation followed by thioesterification. Here, we report the discovery of a non-adenylating acyl-CoA ligase PtmA2 and ...
    • Natural supersymmetry, muon g−2, and the last crevices for the top squark 

      Padley, B. Paul; Sinha, Kuver; Wang, Kechen (2015)
      We study the interplay of natural supersymmetry and a supersymmetric solution to the discrepancy observed in measurements of the muon magnetic moment. The strongest constraints on the parameter space currently come from ...
    • Nb/Ta systematics in arc magma differentiation and the role of arclogites in continent formation 

      Tang, Ming; Lee, Cin-Ty A.; Chen, Kang; Erdman, Monica; Costin, Gelu; Jiang, Hehe (2019)
      The surfaces of rocky planets are mostly covered by basaltic crust, but Earth is unique in that it also has extensive regions of felsic crust, manifested in the form of continents. Exactly how felsic crust forms when ...
    • Nb/Ta systematics in arc magma differentiation and the role of arclogites in continent formation 

      Tang, Ming; Lee, Cin-Ty A.; Chen, Kang; Erdman, Monica; Costin, Gelu; Jiang, Hehe (2019)
      The surfaces of rocky planets are mostly covered by basaltic crust, but Earth is unique in that it also has extensive regions of felsic crust, manifested in the form of continents. Exactly how felsic crust forms when ...
    • Near-equilibrium growth from borophene edges on silver 

      Zhang, Zhuhua; Mannix, Andrew J.; Liu, Xiaolong; Hu, Zhili; Guisinger, Nathan P.; Hersam, Mark C.; Yakobson, Boris I. (2019)
      Two-dimensional boron, borophene, was realized in recent experiments but still lacks an adequate growth theory for guiding its controlled synthesis. Combining ab initio calculations and experimental characterization, we ...
    • Negative scattering length of ultracold Li7 gas 

      Moerdijk, A.J.; Stwalley, W.C.; Hulet, R.G.; Verhaar, B.J. (1994)
      We have improved the theoretical triplet ground-state potential of Li27 by means of an inverse perturbation analysis, and find that the diatomic scattering length for Li7 atoms in the F=2, mF=2 ground-state hyperfine level ...
    • Nematic Crossover in BaFe2As2 under Uniaxial Stress 

      Ren, Xiao; Duan, Lian; Hu, Yuwen; Li, Jiarui; Zhang, Rui; Luo, Huiqian; Dai, Pengcheng; Li, Yuan (2015)
      Raman scattering can detect spontaneous point-group symmetry breaking without resorting to single-domain samples. Here, we use this technique to study BaFe2As2, the parent compound of the “122” Fe-based superconductors. ...