Now showing items 21234-21253 of 34782

    • Norbornadiene End-Capping of Cross-Coupling Polymerizations: A Facile Route to Triblock Polymers 

      Swager, Timothy Manning; Cox, Jason R.; Kang, Hyun A.; Igarashi, Takeshi (American Chemical Society (ACS), 2012-02)
      The potential use of conjugated polymers in device applications is often limited by their less than optimal physicochemical properties. This work describes an efficient protocol to end-cap conjugated polymers synthesized ...
    • Normal aging induces A1-like astrocyte reactivity 

      Clarke, Laura E.; Liddelow, Shane A.; Chakraborty, Chandrani; Münch, Alexandra E.; Heiman, Myriam; e.a. (Proceedings of the National Academy of Sciences, 2018-02)
      The decline of cognitive function occurs with aging, but the mechanisms responsible are unknown. Astrocytes instruct the formation, maturation, and elimination of synapses, and impairment of these functions has been ...
    • Normal and neoplastic non-stem cells can spontaneously convert to a stem-like state 

      Su, Ying; Polyak, Kornelia; Arendt, Lisa M.; Kuperwasser, Charlotte; Bierie, Brian; e.a. (New York Academy of Sciences, 2011-04)
      Current models of stem cell biology assume that normal and neoplastic stem cells reside at the apices of hierarchies and differentiate into nonstem progeny in a unidirectional manner. Here we identify a subpopulation of ...
    • Normal Evoked Response to Rapid Sequences of Tactile Pulses in Autism Spectrum Disorders 

      Ganesan, Santosh; Khan, Sheraz; Garel, Keri-Lee A.; Hämäläinen, Matti S.; Kenet, Tal (Frontiers Research Foundation, 2016-09)
      Autism spectrum disorder (ASD) is a developmental disorder diagnosed behaviorally, with many documented neurophysiological abnormalities in cortical response properties. While abnormal sensory processing is not considered ...
    • Normal Midbrain Dopaminergic Neuron Development and Function in miR-133b Mutant Mice 

      Heyer, Mary P.; Pani, Amar K.; Smeyne, Richard J.; Kenny, Paul K.; Feng, Guoping (Society for Neuroscience, 2012-08)
      Midbrain dopaminergic (mDA) neurons control movement and emotion, and their degeneration leads to motor and cognitive defects in Parkinson's disease (PD). miR-133b is a conserved microRNA that is thought to regulate mDA ...
    • Normal modes and phase transition of the protein chain based on the Hamiltonian formalism 

      Leong, Hon-Wai; Chew, Lock Yue; Huang, Kerson (American Physical Society, 2010-07)
      We use the torsional angles of the protein chain as generalized coordinates in the canonical formalism, derive canonical equations of motion, and investigate the coordinate dependence of the kinetic energy expressed in ...
    • Normal modes of weak colloidal gels 

      Varga, Zsigmond; Swan, James W (American Physical Society, 2018-01)
      The normal modes and relaxation rates of weak colloidal gels are investigated in calculations using different models of the hydrodynamic interactions between suspended particles. The relaxation spectrum is computed for ...
    • Normal Wound Healing and Tumor Angiogenesis as a Game of Competitive Inhibition 

      Kareva, Irina; Abou-Slaybi, Abdo; Dashevsky, Olga; Klement, Giannoula Lakka; Dodd, Oliver B. (Public Library of Science, 2016-12)
      Both normal wound healing and tumor angiogenesis are mitigated by the sequential, carefully orchestrated release of growth stimulators and inhibitors. These regulators are released from platelet clots formed at the sites ...
    • The normal, the natural and the good: Generics and ideology 

      Haslanger, Sally (Societa Editrice il Mulino, 2014-09)
      The idea of "what's normal" has two importantly different uses. On one hand, "what's normal" is a statistical concept: what's normal is what is statistically probable. On the other hand, "what's normal," is a normative ...
    • Normal-to-topological insulator martensitic phase transition in group-IV monochalcogenides driven by light 

      Zhou, Jian; Zhang, Shunhong; Li, Ju (Springer Science and Business Media LLC, 2020-01)
      © 2020, The Author(s). A material potentially exhibiting multiple crystalline phases with distinct optoelectronic properties can serve as a phase-change memory material. The sensitivity and kinetics can be enhanced when ...
    • Normalization and Statistical Analysis of Multiplexed Bead-Based Immunoassay Data Using Mixed-Effects Modeling 

      Clarke, David C.; Morris, Melody Kay; Lauffenburger, Douglas A. (American Society for Biochemistry and Molecular Biology (ASBMB), 2012-10)
      Multiplexed bead-based flow cytometric immunoassays are a powerful experimental tool for investigating cellular communication networks, yet their widespread adoption is limited in part by challenges in robust quantitative ...
    • Normalization of Plasma 25-Hydroxy Vitamin D Is Associated with Reduced Risk of Surgery in Crohn’s Disease 

      Ananthakrishnan, Ashwin N.; Cagan, Andrew; Gainer, Vivian; Cai, Tianxi; Cheng, Su-Chun; e.a. (Lippincott Williams & Wilkins, 2013-06)
      AB Background: Vitamin D may have an immunologic role in Crohn's disease (CD) and ulcerative colitis (UC). Retrospective studies suggested a weak association between vitamin D status and disease activity but have significant ...
    • Normalization of tumour blood vessels improves the delivery of nanomedicines in a size-dependent manner 

      Chauhan, Vikash P.; Stylianopoulos, Triantafyllos; Chen, Ou; Kamoun, Walid S.; Bawendi, Moungi G.; e.a. (Nature Publishing Group, 2012-04)
      The blood vessels of cancerous tumours are leaky and poorly organized. This can increase the interstitial fluid pressure inside tumours and reduce blood supply to them, which impairs drug delivery. Anti-angiogenic ...
    • Normalized ghost imaging 

      Sun, Baoqing; Welsh, Stephen S.; Edgar, Matthew P.; Shapiro, Jeffrey H.; Padgett, Miles J. (Optical Society of America, 2012-07)
      We present an experimental comparison between different iterative ghost imaging algorithms. Our experimental setup utilizes a spatial light modulator for generating known random light fields to illuminate a partially-transmissive ...
    • Normative and image motivations for transportation policy compliance 

      Gao, Jingkang; Zhao, Jinhua (Sage Publications, 2016-09)
      Compliance with laws and regulations intended to protect common pool resources in the urban context is essential in tackling problems such as pollution and congestion. A high level of non-compliance necessitates investigation ...
    • Norms and the Knobe effect 

      Holton, Richard (Oxford University Press, 2010-05)
      In a justly famous study, Joshua Knobe found an asymmetry in the way we ascribe intentional action (Knobe 2003). Consider an executive who, motivated entirely by the goal of maximizing profit, embarks on a policy that he ...
    • Norms-Based Intellectual Property Systems: The Case of French Chefs 

      Fauchart, Emmanuelle; von Hippel, Eric A. (Institute for Operations Research and the Management Sciences (INFORMS), 2008-03)
      In this paper we propose that norms-based intellectual property (IP) systems exist today and are an important complement to or substitute for law-based IP systems. Norms-based IP systems, as we define them, operate entirely ...
    • North American Aerospace Project-Adaptable Design/Build Projects for Aerospace Education 

      Niewoehner, Robert; Gray, Peter; Koster, Jean; Crawley, Edward F (American Institute of Aeronautics and Astronautics (AIAA), 2011-01)
      The North American Aerospace Project (NAAP) is a NASA/industry sponsored effort to accelerate penetration of the project-based educational concept of “Conceiving, Designing, Implementing, and Operating” (CDIO) into US ...
    • North China Plain threatened by deadly heatwaves due to climate change and irrigation 

      Kang, Suchul; Eltahir, Elfatih A. B. (Nature Publishing Group, 2018-07)
      North China Plain is the heartland of modern China. This fertile plain has experienced vast expansion of irrigated agriculture which cools surface temperature and moistens surface air, but boosts integrated measures of ...
    • North Korean disarmament: build technology and trust 

      Kemp, R. Scott; Kemp, Ronald S. (Nature Publishing Group, 2018-06)