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11

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Active display and encoding by integrated plasmonic polarizer on light-emitting-diode (2013)

L. Wang; T. Li; R. Y. Guo; W. Xia; X. G. Xu; S. N. Zhu

Springer Nature

In: Scientific Reports

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Publikationsdatum: 2013-09-07

Beschreibung: An electrical pumped microscopic active display with integration of plasmonic polarizer and light-emitting-diode is proposed. Thanks to the strong polarized emission through the rectangular nanoholes, well designed pixels with respect to different polarizations are engineered, which give rise to flexible and controllable active display. As results, polarization multiplexed letter encoding, single and double gray-scale images and animation movies are successfully realized. Our results demonstrate a new strategy in electro-optical integration and indicate potential applications in designing new type of microscopic electro-optical devices. Scientific Reports 3 doi: 10.1038/srep02603

Digitale ISSN: 2045-2322

Thema: Allgemeine Naturwissenschaft

Publiziert von Springer Nature

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12

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Standardization of surface potential measurements of graphene domains (2013)

Vishal Panchal; Ruth Pearce; Rositza Yakimova; Alexander Tzalenchuk; Olga Kazakova

Springer Nature

In: Scientific Reports

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Publikationsdatum: 2013-09-07

Beschreibung: We compare the three most commonly used scanning probe techniques to obtain a reliable value of the work function in graphene domains of different thickness. The surface potential (SP) of graphene is directly measured in Hall bar geometry via a combination of electrical functional microscopy and spectroscopy techniques, which enables calibrated work function measurements of graphene domains in ambient conditions with values Φ1LG ~4.55 ± 0.02 eV and Φ2LG ~ 4.44 ± 0.02 eV for single- and bi-layer, respectively. We demonstrate that frequency-modulated Kelvin probe force microscopy (FM-KPFM) provides more accurate measurement of the SP than amplitude-modulated (AM)-KPFM. The discrepancy between experimental results obtained by different techniques is discussed. In addition, we use FM-KPFM for contactless measurements of the specific components of the device resistance. We show a strong non-Ohmic behavior of the electrode-graphene contact resistance and extract the graphene channel resistivity. Scientific Reports 3 doi: 10.1038/srep02597

Digitale ISSN: 2045-2322

Thema: Allgemeine Naturwissenschaft

Publiziert von Springer Nature

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13

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Involvement of A20 in the molecular switch that activates the non-canonical NF-кB pathway (2013)

Noritaka Yamaguchi; Masaaki Oyama; Hiroko Kozuka-Hata; Jun-ichiro Inoue

Springer Nature

In: Scientific Reports

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Publikationsdatum: 2013-09-07

Beschreibung: The non-canonical NF-κB pathway is crucial for the immune system. A critical event in activation of the non-canonical pathway is the attenuation of NF-κB-inducing kinase (NIK) degradation, which is promoted by continuous polyubiquitination of NIK catalyzed by the NIK ubiquitin-ligase complex composed of cellular inhibitor of apoptosis protein 1 and 2 (cIAP1/2), TNF receptor-associated factor 2 (TRAF2), and TRAF3. However, the molecular mechanism of stimulation-dependent NIK stabilization remains poorly understood. Here, we show that A20, a ubiquitin-editing enzyme, promotes efficient activation of the non-canonical pathway independent of its catalytic activity. A20 directly binds to cIAP1 through the seventh zinc finger of A20, resulting in dissociation of the TRAF2/TRAF3 interaction, thereby inactivating the ligase complex to stabilize NIK. Given that A20 negatively regulates the canonical pathway, A20 is likely involved in the molecular switch that promotes the transition from canonical to non-canonical activation for proper control of the immune system. Scientific Reports 3 doi: 10.1038/srep02568

Digitale ISSN: 2045-2322

Thema: Allgemeine Naturwissenschaft

Publiziert von Springer Nature

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14

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Single neurons in monkey prefrontal cortex encode volitional initiation of vocalizations (2013)

Steffen R. Hage; Andreas Nieder

Springer Nature

In: Nature Communications

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Publikationsdatum: 2013-09-08

Beschreibung: Article The Broca area is located in the human prefrontal cortex and is involved in voluntary speech. Hage and Nieder now show that a monkey homologue of Broca’s area is similarly responsible for monkey volitional vocalizations. Nature Communications doi: 10.1038/ncomms3409 Authors: Steffen R. Hage, Andreas Nieder

Digitale ISSN: 2041-1723

Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft , Physik

Publiziert von Springer Nature

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15

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Quantal and graded stimulation of B lymphocytes as alternative strategies for regulating adaptive immune responses (2013)

E.D. Hawkins; M.L. Turner; C.J. Wellard; J.H.S. Zhou; M.R. Dowling; P.D. Hodgkin

Springer Nature

In: Nature Communications

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Publikationsdatum: 2013-09-08

Beschreibung: Article B lymphocytes respond to stimulation by proliferating and differentiating. Here the authors quantify and model the responses of B lymphocytes to TLR and CD40-dependent stimulation, and find that the latter induces a more complex response to signals of varying strength. Nature Communications doi: 10.1038/ncomms3406 Authors: E.D. Hawkins, M.L. Turner, C.J. Wellard, J.H.S. Zhou, M.R. Dowling, P.D. Hodgkin

Digitale ISSN: 2041-1723

Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft , Physik

Publiziert von Springer Nature

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16

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Erratum: TRF1 is a stem cell marker and is essential for the generation of induced pluripotent stem cells (2013)

Ralph P. Schneider; Ianire Garrobo; Miguel Foronda; Jose A. Palacios; Rosa M. Marión; Ignacio Flores; Sagrario Ortega; Maria A. Blasco

Springer Nature

In: Nature Communications

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Publikationsdatum: 2013-09-08

Beschreibung: Erratum Nature Communications doi: 10.1038/ncomms3309 Authors: Ralph P. Schneider, Ianire Garrobo, Miguel Foronda, Jose A. Palacios, Rosa M. Marión, Ignacio Flores, Sagrario Ortega, Maria A. Blasco

Digitale ISSN: 2041-1723

Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft , Physik

Publiziert von Springer Nature

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17

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Noble metal nanoclusters and nanoparticles precede mineral formation in magmatic sulphide melts (2013)

Hassan M. Helmy; Chris Ballhaus; Raúl O.C. Fonseca; Richard Wirth; Thorsten Nagel; Marian Tredoux

Springer Nature

In: Nature Communications

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Publikationsdatum: 2013-09-08

Beschreibung: Article It has long been suggested, but never shown, than nanometre-sized particles precede mineral formation in magmatic systems. Here, Helmy et al. demonstrate that platinum and arsenic self-organize to nanoparticle precursors in magmatic liquids before mineral crystallization. Nature Communications doi: 10.1038/ncomms3405 Authors: Hassan M. Helmy, Chris Ballhaus, Raúl O.C. Fonseca, Richard Wirth, Thorsten Nagel, Marian Tredoux

Digitale ISSN: 2041-1723

Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft , Physik

Publiziert von Springer Nature

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18

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High-resolution three-dimensional mapping of mRNA export through the nuclear pore (2013)

Jiong Ma; Zhen Liu; Nicole Michelotti; Sethuramasundaram Pitchiaya; Ram Veerapaneni; John R. Androsavich; Nils G. Walter; Weidong Yang

Springer Nature

In: Nature Communications

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Publikationsdatum: 2013-09-08

Beschreibung: Article Messenger RNAs and their associated proteins are transported from the nucleus through highly selective nuclear pore complexes. Using ultrahigh resolution single-molecule imaging, the authors visualise the path taken by each messenger RNA as it negotiates the pore’s selectivity filter. Nature Communications doi: 10.1038/ncomms3414 Authors: Jiong Ma, Zhen Liu, Nicole Michelotti, Sethuramasundaram Pitchiaya, Ram Veerapaneni, John R. Androsavich, Nils G. Walter, Weidong Yang

Digitale ISSN: 2041-1723

Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft , Physik

Publiziert von Springer Nature

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19

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Identification of a splice variant of mouse TRPA1 that regulates TRPA1 activity (2013)

Yiming Zhou; Yoshiro Suzuki; Kunitoshi Uchida; Makoto Tominaga

Springer Nature

In: Nature Communications

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Publikationsdatum: 2013-09-08

Beschreibung: Article TRPA1 is a transient receptor potential channel family member and is involved in the detection of nociceptive stimuli. Zhou et al. identify an alternative splice variant of TRPA1, which increases TRPA1 plasma expression and channel function, and enhances pain-like behaviour in mice. Nature Communications doi: 10.1038/ncomms3399 Authors: Yiming Zhou, Yoshiro Suzuki, Kunitoshi Uchida, Makoto Tominaga

Digitale ISSN: 2041-1723

Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft , Physik

Publiziert von Springer Nature

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Corrigendum: Delivery of therapeutic agents by nanoparticles made of grapefruit-derived lipids (2013)

Qilong Wang; Xiaoying Zhuang; Jingyao Mu; Zhong-Bin Deng; Hong Jiang; Lifeng Zhang; Xiaoyu Xiang; Baomei Wang; Jun Yan; Donald Miller; Huang-Ge Zhang

Springer Nature

In: Nature Communications

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Publikationsdatum: 2013-09-08

Beschreibung: Corrigendum Nature Communications doi: 10.1038/ncomms3358 Authors: Qilong Wang, Xiaoying Zhuang, Jingyao Mu, Zhong-Bin Deng, Hong Jiang, Lifeng Zhang, Xiaoyu Xiang, Baomei Wang, Jun Yan, Donald Miller, Huang-Ge Zhang

Digitale ISSN: 2041-1723

Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft , Physik

Publiziert von Springer Nature

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