Now showing items 1756-1775 of 32066

    • B Cells Promote Pancreatic Tumorigenesis 

      Roghanian, Ali; Fraser, Christopher; Kleyman, Marianna; Chen, Jianzhu (American Association for Cancer Research (AACR), 2016-03)
      Summary: Three recent studies, approaching the question from different angles and using different and/or overlapping models, provide compelling evidence for the involvement of tumor-infiltrating B cells in the initiation ...
    • B meson decays to charmless meson pairs containing η or η' mesons 

      Cowan, Ray F; Dujmic, Denis; Fisher, Peter H; Henderson, Shawn Wesley; Sciolla, Gabriella; e.a. (American Physical Society (APS), 2009-12)
      We present updated measurements of the branching fractions for B[superscript 0] meson decays to ηK[superscript 0], ηη, ηφ, ηω, η′K[superscript 0], η′η′, η′φ, and η′ω, and branching fractions and CP-violating charge asymmetries ...
    • B-meson decays to eta′rho, eta′f0, and eta′K* 

      Fisher, Peter H.; Cowan, Ray Franklin; Dujmic, Denis; Sciolla, Gabriella; Zhao, M. (American Physical Society, 2010-07)
      We present measurements of B-meson decays to the final states eta′rho, eta′f0, and eta′K*, where K* stands for a vector, scalar, or tensor strange meson. We observe a significant signal or evidence for eta′rho+ and all the ...
    • A B12-dependent radical SAM enzyme involved in oxetanocin A biosynthesis 

      Zhong, Aoshu; Sun, He G.; Liu, Hung-wen; Rabb, Jennifer; Drennan, Catherine L. (Springer Nature, 2017-04)
      Oxetanocin A (OXT-A) is a potent antitumour, antiviral and antibacterial compound. Biosynthesis of OXT-A has been linked to a plasmid-borne Bacillus megaterium gene cluster that contains four genes: oxsA, oxsB, oxrA and ...
    • B2B relationship calculus: quantifying resource effects in service-dominant logic 

      deLeon, Anthony J.; Chatterjee, Sharmila C.; deLeon, Anthony (Springer Nature, 2015-12)
      Increasingly, knowledgeable business-to-business (B2B) customers and evolving customer needs are leading to seismic shifts in vendor–client interactions. Across industries, sellers are changing their business models from ...
    • B7-H5 costimulates human T cells via CD28H 

      Zhu, Yuwen; Yao, Sheng; Iliopoulou, Bettina P.; Han, Xue; Augustine, Mathew M.; e.a. (Nature Publishing Group, 2013-06)
      The B7/CD28 family has profound modulatory effects in immune responses and constitutes an important target for the development of novel therapeutic drugs against human diseases. Here we describe a new CD28 homologue (CD28H) ...
    • B[superscript 0] meson decays to ρ[superscript 0]K[superscript *0], f[subscript 0]K[superscript *0], and ρ[superscript -]K[superscript *+], including higher K[superscript *] resonances 

      Cowan, Ray Franklin; Dujmic, Denis; Sciolla, Gabriella (American Physical Society, 2012-04)
      We present branching fraction measurements for the decays B[superscript 0]→ρ[superscript 0]K[superscript *0], B[superscript 0]→f[subscript 0]K[superscript *0], and B[superscript 0]→ρ[superscript -]K[superscript *+], where ...
    • The BaBar detector: Upgrades, operation and performance 

      Cowan, Ray F; Dujmic, Denis; Fisher, Peter H; Henderson, Shawn Wesley; Koeneke, Karsten; e.a. (Elsevier BV, 2013-06)
      The BaBar detector operated successfully at the PEP-II asymmetric e⁺e⁻ collider at the SLAC National Accelerator Laboratory from 1999 to 2008. This report covers upgrades, operation, and performance of the collider and the ...
    • Bacillus subtilis Class Ib Ribonucleotide Reductase Is a Dimanganese(III)-Tyrosyl Radical Enzyme 

      Zhang, Yan; Stubbe, JoAnne (American Chemical Society (ACS), 2011-05)
      Bacillus subtilis class Ib ribonucleotide reductase (RNR) catalyzes the conversion of nucleotides to deoxynucleotides, providing the building blocks for DNA replication and repair. It is composed of two proteins: α (NrdE) ...
    • Bacillus Subtilis Class Ib Ribonucleotide Reductase: High Activity and Dynamic Subunit Interactions 

      Zhu, Xuling; Stubbe, JoAnne; Parker, Mackenzie James (American Chemical Society (ACS), 2014-01)
      The class Ib ribonucleotide reductase (RNR) isolated from Bacillus subtilis was recently purified as a 1:1 ratio of NrdE (α) and NrdF (β) subunits and determined to have a dimanganic-tyrosyl radical (Mn[superscript ...
    • The Bacillus subtilis conjugative transposon ICEBs1 mobilizes plasmids lacking dedicated mobilization functions 

      Lee, Catherine Ann; Thomas, Jacob; Grossman, Alan D. (American Society for Microbiology, 2012-04)
      Integrative and conjugative elements (ICEs, also known as conjugative transposons) are mobile elements that are found integrated in a host genome and can excise and transfer to recipient cells via conjugation. ICEs and ...
    • Bacillus Subtilis SMC Complexes Juxtapose Chromosome Arms as They Travel from Origin to Terminus 

      Wang, Xindan; Brandão, Hugo B.; Rudner, David Z.; Le, Tung; Laub, Michael T (American Association for the Advancement of Science (AAAS), 2017-02)
      Structural maintenance of chromosomes (SMC) complexes play critical roles in chromosome dynamics in virtually all organisms, but how they function remains poorly understood. In the bacterium Bacillus subtilis, SMC-condensin ...
    • Back pressure effect on three-way catalyst light-off 

      Baron, Jan H.; Cheng, Wai K. (Professional Engineering Pub., 2018-06-01)
      The effect of back pressure on the light-off of a modern spark ignition engine 3-way catalyst has been assessed by measuring The effect of back pressure on the light-off of a modern spark ignition engine 3-way catalyst ...
    • Back Story: Migration, Assimilation and Invasion in the Nineteenth Century [book chapter] 

      Ritvo, Harriet (2014)
      Research from a humanist perspective has much to offer in interrogating the social and cultural ramifications of invasion ecologies. The impossibility of securing national boundaries against accidental transfer and the ...
    • Background independent action for double field theory 

      Hohm, Olaf; Hull, Chris; Zwiebach, Barton (Springer Berlin / Heidelberg, 2010-07)
      Double field theory describes a massless subsector of closed string theory with both momentum and winding excitations. The gauge algebra is governed by the Courant bracket in certain subsectors of this double field theory. ...
    • Background rejection in the DMTPC dark matter search using charge signals 

      Ahlen, S.; Henderson, S.; Inglis, A.; Tomita, H.; Wellenstein, H.; e.a. (Elsevier, 2012-08)
      The Dark Matter Time Projection Chamber (DMTPC) collaboration is developing a low pressure gas TPC for detecting Weakly Interacting Massive Particle (WIMP)-nucleon interactions. Optical readout with CCD cameras allows for ...
    • A background-free direction-sensitive neutron detector 

      Roccaro, Alvaro; Tomita, H.; Ahlen, S.; Avery, D.; Inglis, A.; e.a. (Elsevier, 2009-07)
      We show data from a new type of detector that can be used to determine the neutron flux, the energy distribution, and the direction of motion neutron for both fast and thermal neutrons. Many neutron detectors are plagued ...
    • Background-independent measurement of θ[subscript 13] in Double Chooz 

      Conrad, Janet; Spitz, Joshua B.; Terao, K.; Winslow, Lindley (Elsevier, 2014-05)
      The oscillation results published by the Double Chooz Collaboration in 2011 and 2012 rely on background models substantiated by reactor-on data. In this analysis, we present a background-model-independent measurement of ...
    • The Backseat Control Architecture for Autonomous Robotic Vehicles: A Case Study with the Iver2 AUV 

      Brown, Scott R.; Eickstedt, Donald (Institute of Electrical and Electronics Engineers, 2010-03)
      In this paper, an innovative hybrid control architecture for real-time control of autonomous robotic vehicles is described as well as its implementation on a commercially available autonomous underwater vehicle (AUV). This ...
    • Backtracking Counterfactuals Revisited 

      Khoo, Justin Donald (Oxford University Press (OUP), 2016-10)
      I discuss three observations about backtracking counterfactuals not predicted by existing theories, and then motivate a theory of counterfactuals that does predict them. On my theory, counterfactuals quantify over a suitably ...