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1

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Anomalous critical fields in quantum critical superconductors (2014)

C. Putzke; P. Walmsley; J. D. Fletcher; L. Malone; D. Vignolles; C. Proust; S. Badoux; P. See; H. E. Beere; D. A. Ritchie; S. Kasahara; Y. Mizukami; T. Shibauchi; Y. Matsuda; A. Carrington

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-07

Beschreibung: Article Superconductivity in the iron pnictides is believed to be related to quantum critical fluctuations. Putzke et al. observe unexpected anomalies in the critical fields of BaFe 2 (As 1−x P x ) 2 that emerge close to its magnetic critical point, which they argue is a generic feature of quantum critical superconductivity. Nature Communications doi: 10.1038/ncomms6679 Authors: C. Putzke, P. Walmsley, J. D. Fletcher, L. Malone, D. Vignolles, C. Proust, S. Badoux, P. See, H. E. Beere, D. A. Ritchie, S. Kasahara, Y. Mizukami, T. Shibauchi, Y. Matsuda, A. Carrington

Digitale ISSN: 2041-1723

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

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microTSS: accurate microRNA transcription start site identification reveals a significant number of divergent pri-miRNAs (2014)

Georgios Georgakilas; Ioannis S. Vlachos; Maria D. Paraskevopoulou; Peter Yang; Yuhong Zhang; Aris N. Economides; Artemis G. Hatzigeorgiou

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-12

Beschreibung: Article microRNAs are short non-coding RNAs that post-transcriptionally regulate gene expression for which the identification of promoter and primary transcripts (pri-miRNAs) has been difficult. Here the authors describe microTSS, an algorithm that supports the precise identification of intergenic pri-miRNA transcription start sites. Nature Communications doi: 10.1038/ncomms6700 Authors: Georgios Georgakilas, Ioannis S. Vlachos, Maria D. Paraskevopoulou, Peter Yang, Yuhong Zhang, Aris N. Economides, Artemis G. Hatzigeorgiou

Digitale ISSN: 2041-1723

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

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Transcriptome analysis reveals dysregulation of innate immune response genes and neuronal activity-dependent genes in autism (2014)

Simone Gupta; Shannon E. Ellis; Foram N. Ashar; Anna Moes; Joel S. Bader; Jianan Zhan; Andrew B. West; Dan E. Arking

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-12

Beschreibung: Article Autism spectrum disorder (ASD) is a common, highly heritable neurodevelopmental condition characterized by marked genetic heterogeneity. In this study, the authors use RNA sequencing analyses to characterize differences in the transcriptome between autistic and typically developing brains. Nature Communications doi: 10.1038/ncomms6748 Authors: Simone Gupta, Shannon E. Ellis, Foram N. Ashar, Anna Moes, Joel S. Bader, Jianan Zhan, Andrew B. West, Dan E. Arking

Digitale ISSN: 2041-1723

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

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4

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All-organic optoelectronic sensor for pulse oximetry (2014)

Claire M. Lochner; Yasser Khan; Adrien Pierre; Ana C. Arias

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-12

Beschreibung: Article Pulse oximetry is a non-invasive means for measuring blood oxygen saturation and pulse rate, with typical sensors based on rigid electronics. Here, the authors develop a pulse oximeter based solely on organic materials, allowing flexible devices and hence increasing the potential sensing locations on the body. Nature Communications doi: 10.1038/ncomms6745 Authors: Claire M. Lochner, Yasser Khan, Adrien Pierre, Ana C. Arias

Digitale ISSN: 2041-1723

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

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5

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Laser-induced porous graphene films from commercial polymers (2014)

Jian Lin; Zhiwei Peng; Yuanyue Liu; Francisco Ruiz-Zepeda; Ruquan Ye; Errol L. G. Samuel; Miguel Jose Yacaman; Boris I. Yakobson; James M. Tour

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-12

Beschreibung: Article The straightforward and scalable synthesis and patterning of graphene-based nanomaterials remains a technological challenge. Here, the authors use a CO 2 infrared laser, under ambient conditions, to directly produce and pattern porous graphene films with three-dimensional networks from commercial polymer films. Nature Communications doi: 10.1038/ncomms6714 Authors: Jian Lin, Zhiwei Peng, Yuanyue Liu, Francisco Ruiz-Zepeda, Ruquan Ye, Errol L. G. Samuel, Miguel Jose Yacaman, Boris I. Yakobson, James M. Tour

Digitale ISSN: 2041-1723

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

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6

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Exact results for models of multichannel quantum nonadiabatic transitions (2014)

N. A. Sinitsyn

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): N. A. Sinitsyn We consider nonadiabatic transitions in explicitly time-dependent systems with Hamiltonians of the form Ĥ(t)=Â+B̂t+Ĉ/t, where t is time and Â, B̂, Ĉ are Hermitian N×N matrices. We show that in any model of this type, scattering matrix elements satisfy nontrivial exact constraints that follow fr... [Phys. Rev. A 90, 062509] Published Thu Dec 11, 2014

Schlagwort(e): Atomic and molecular structure and dynamics

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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7

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Parameter estimation in memory-assisted noisy quantum interferometry (2014)

P. Szańkowski, M. Trippenbach, and J. Chwedeńczuk

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): P. Szańkowski, M. Trippenbach, and J. Chwedeńczuk We demonstrate that memory in an N-qubit system subjected to decoherence, is a potential resource for the slowdown of the entanglement decay. We show that this effect can be used to retain the sub-shot-noise sensitivity of the parameter estimation in quantum interferometry. We calculate quantum Fish... [Phys. Rev. A 90, 063619] Published Thu Dec 11, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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8

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Collisional trap losses of cold magnetically trapped Br atoms (2014)

J. Lam, C. J. Rennick, and T. P. Softley

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): J. Lam, C. J. Rennick, and T. P. Softley Near-threshold photodissociation of Br 2 from a supersonic beam produces slow bromine atoms that are trapped in the magnetic-field minimum formed between two opposing permanent magnets. Here we quantify the dominant trap-loss rate due to collisions with two sources of residual gas: the background lim... [Phys. Rev. A 90, 063419] Published Thu Dec 11, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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9

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Relative phase control over tunneling ionization of H_{2}^{+} with a synthesized ω-2ω laser pulse (2014)

Hongbin Yao, Wei Guo, Mark R. Hoffmann, and Keli Han

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): Hongbin Yao, Wei Guo, Mark R. Hoffmann, and Keli Han We demonstrate an efficient scheme for controlling the tunneling ionization of a H 2 + molecular ion. Our scheme is based on the idea that the tunneling ionization rate is highly dependent on the instantaneous magnitude of the electric field. By manipulating the relative phase of the synthesized 5-fs,... [Phys. Rev. A 90, 063418] Published Thu Dec 11, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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10

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Unitary evolution and the distinguishability of quantum states (2014)

Sam Morley-Short, Lawrence Rosenfeld, and Pieter Kok

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): Sam Morley-Short, Lawrence Rosenfeld, and Pieter Kok The study of quantum systems evolving from initial states to distinguishable, orthogonal final states is important for information processing applications such as quantum computing and quantum metrology. However, for most unitary evolutions and initial states the system does not evolve to an orthogo... [Phys. Rev. A 90, 062116] Published Thu Dec 11, 2014

Schlagwort(e): Fundamental concepts

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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11

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Markovian evolution of strongly coupled harmonic oscillators (2014)

Chaitanya Joshi, Patrik Öhberg, James D. Cresser, and Erika Andersson

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): Chaitanya Joshi, Patrik Öhberg, James D. Cresser, and Erika Andersson We investigate how to model Markovian evolution of coupled harmonic oscillators, each of them interacting with a local environment. When the coupling between the oscillators is weak, dissipation may be modeled using local Lindblad terms for each of the oscillators in the master equation, as is commo... [Phys. Rev. A 90, 063815] Published Thu Dec 11, 2014

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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12

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Superfluidity and solid order in a two-component Bose gas with dipolar interactions in an optical lattice (2014)

Yoshihito Kuno, Keita Suzuki, and Ikuo Ichinose

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): Yoshihito Kuno, Keita Suzuki, and Ikuo Ichinose In this paper, we study an extended bosonic t-J model in an optical lattice, which describes two-component hard-core bosons with nearest-neighbor pseudospin interactions and, also, inter- and intraspecies dipole-dipole interactions. In particular, we focus on the case in which two-component hard-cor... [Phys. Rev. A 90, 063620] Published Thu Dec 11, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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13

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Electrically tunable nonlinear plasmonics in graphene nanoislands (2014)

Joel D. Cox; F. Javier García de Abajo

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-13

Beschreibung: Article Plasmons in metallic nanostructures provide light enhancement that amplifies their nonlinear optical response. This study shows that graphene nanoislands also give rise to an amplified nonlinear polarizability that can be tuned electrically to surpass those of other nonlinear media by orders of magnitude. Nature Communications doi: 10.1038/ncomms6725 Authors: Joel D. Cox, F. Javier García de Abajo

Digitale ISSN: 2041-1723

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

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14

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Structural insights into 5′ flap DNA unwinding and incision by the human FAN1 dimer (2014)

Qi Zhao; Xiaoyu Xue; Simonne Longerich; Patrick Sung; Yong Xiong

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-13

Beschreibung: Article FAN1 is a structure-specific nuclease that plays a major role in eliminating highly cytotoxic interstrand DNA crosslinks. Here, Zhao et al . present several crystal structures of FAN1 in complex with DNA substrates and biochemical analyses that establish how FAN1 functions to resolve interstrand DNA crosslinks. Nature Communications doi: 10.1038/ncomms6726 Authors: Qi Zhao, Xiaoyu Xue, Simonne Longerich, Patrick Sung, Yong Xiong

Digitale ISSN: 2041-1723

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

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15

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Spartan deficiency causes genomic instability and progeroid phenotypes (2014)

Reeja S. Maskey; Myoung Shin Kim; Darren J. Baker; Bennett Childs; Liviu A. Malureanu; Karthik B. Jeganathan; Yuka Machida; Jan M. van Deursen; Yuichi J. Machida

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-13

Beschreibung: Article Spartan/DVC1 is a translesion synthesis regulator with important roles in cellular DNA damage tolerance. Here, the authors report that Spartan is essential for DNA lesion bypass and that Spartan insufficiency in mice causes chromosomal instability, cellular senescence and early onset of age-related phenotypes. Nature Communications doi: 10.1038/ncomms6744 Authors: Reeja S. Maskey, Myoung Shin Kim, Darren J. Baker, Bennett Childs, Liviu A. Malureanu, Karthik B. Jeganathan, Yuka Machida, Jan M. van Deursen, Yuichi J. Machida

Digitale ISSN: 2041-1723

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

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16

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Geochemistry of silicate-rich rocks can curtail spreading of carbon dioxide in subsurface aquifers (2014)

S. S. S. Cardoso; J. T. H. Andres

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-13

Beschreibung: Article Carbon sequestration will be vital in mitigating future climate change, and understanding how CO 2 behaves in aquifers is important for developing technologies. Here, the authors suggest that silicate-rich rocks inhibit the transport of CO 2 , which may have consequences for future engineered storage facilities. Nature Communications doi: 10.1038/ncomms6743 Authors: S. S. S. Cardoso, J. T. H. Andres

Digitale ISSN: 2041-1723

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

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17

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MORC1 represses transposable elements in the mouse male germline (2014)

William A. Pastor; Hume Stroud; Kevin Nee; Wanlu Liu; Dubravka Pezic; Sergei Manakov; Serena A. Lee; Guillaume Moissiard; Natasha Zamudio; Déborah Bourc’his; Alexei A. Aravin; Amander T. Clark; Steven E. Jacobsen

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-14

Beschreibung: Article The Microrchidia (Morc) family of GHKL ATPases are important repressors of transposons and other DNA-methylated and silent genes in A. thaliana . Here, the authors show that MORC1 is responsible for repression and methylation of specific classes of transposons in the mouse male germline. Nature Communications doi: 10.1038/ncomms6795 Authors: William A. Pastor, Hume Stroud, Kevin Nee, Wanlu Liu, Dubravka Pezic, Sergei Manakov, Serena A. Lee, Guillaume Moissiard, Natasha Zamudio, Déborah Bourc’his, Alexei A. Aravin, Amander T. Clark, Steven E. Jacobsen

Digitale ISSN: 2041-1723

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

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18

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Clusterin facilitates stress-induced lipidation of LC3 and autophagosome biogenesis to enhance cancer cell survival (2014)

Fan Zhang; Masafumi Kumano; Eliana Beraldi; Ladan Fazli; Caigan Du; Susan Moore; Poul Sorensen; Amina Zoubeidi; Martin E. Gleave

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-14

Beschreibung: Article The induction of autophagy under stress conditions such as chemotherapy is a contributing factor towards resistance to anticancer therapy. Here, Zhang et al . identify the molecular chaperone clusterin as an adaptor that facilitates lipidation of LC3 and autophagosome biogenesis. Nature Communications doi: 10.1038/ncomms6775 Authors: Fan Zhang, Masafumi Kumano, Eliana Beraldi, Ladan Fazli, Caigan Du, Susan Moore, Poul Sorensen, Amina Zoubeidi, Martin E. Gleave

Digitale ISSN: 2041-1723

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

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19

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Uncertainty relation for mutual information (2014)

James Schneeloch, Curtis J. Broadbent, and John C. Howell

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-16

Beschreibung: Author(s): James Schneeloch, Curtis J. Broadbent, and John C. Howell We postulate the existence of a universal uncertainty relation between the quantum and classical mutual informations between pairs of quantum systems. Specifically, we propose that the sum of the classical mutual information, determined by two mutually unbiased pairs of observables, never exceeds th... [Phys. Rev. A 90, 062119] Published Mon Dec 15, 2014

Schlagwort(e): Fundamental concepts

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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20

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Differential cross sections for single ionization of Li in collisions with fast protons and O^{8+} ions (2014)

L. Gulyás, S. Egri, and T. Kirchner

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-16

Beschreibung: Author(s): L. Gulyás, S. Egri, and T. Kirchner We study the process of single ionization of Li in collisions with H + and O 8+ projectile ions at 6-MeV and 1.5-MeV/amu impact energies, respectively. Using the frameworks of the independent-electron model and the impact parameter picture, fully (FDCS) and doubly (DDCS) differential cross sections ar... [Phys. Rev. A 90, 062710] Published Mon Dec 15, 2014

Schlagwort(e): Atomic and molecular collisions and interactions

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Propagation of nanofiber-guided light through an array of atoms (2014)

Fam Le Kien and A. Rauschenbeutel

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-16

Beschreibung: Author(s): Fam Le Kien and A. Rauschenbeutel We study the propagation of nanofiber-guided light through an array of atomic cesium, taking into account the transitions between the hyperfine levels 6S 1/2 F=4 and 6P 3/2 F ′ =5 of the D 2 line. We derive the coupled-mode propagation equation, the input-output equation, the scattering matrix, the transfe... [Phys. Rev. A 90, 063816] Published Mon Dec 15, 2014

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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Phosphorylation of LRRK2 by casein kinase 1α regulates trans-Golgi clustering via differential interaction with ARHGEF7 (2014)

Ruth Chia; Sara Haddock; Alexandra Beilina; Iakov N. Rudenko; Adamantios Mamais; Alice Kaganovich; Yan Li; Ravindran Kumaran; Michael A. Nalls; Mark R. Cookson

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-17

Beschreibung: Article The kinase LRRK2 is implicated in Parkinson’s disease progression and is known to be phosphorylated. Chia et al. show that this phosphorylation is mediated by the kinase CK1a, and is required for the recruitment of LRRK2 to Golgi-derived vesicles, suggesting a role for this protein in Golgi maintenance. Nature Communications doi: 10.1038/ncomms6827 Authors: Ruth Chia, Sara Haddock, Alexandra Beilina, Iakov N. Rudenko, Adamantios Mamais, Alice Kaganovich, Yan Li, Ravindran Kumaran, Michael A. Nalls, Mark R. Cookson

Digitale ISSN: 2041-1723

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

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23

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Control of membrane gaps by synaptotagmin-Ca2+ measured with a novel membrane distance ruler (2014)

Chao-Chen Lin; Jan Seikowski; Angel Pérez-Lara; Reinhard Jahn; Claudia Höbartner; Peter Jomo Walla

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-17

Beschreibung: Article Synaptotagmin-1 (syt-1) triggers fast synchronous neurotransmission mediated by fusion of synaptic vesicles with presynaptic membranes. Here Lin et al. use inter-membrane FRET combined with DNA rulers as calibration standards to quantify Ca 2+ -induced changes in membrane distances mediated by syt-1. Nature Communications doi: 10.1038/ncomms6859 Authors: Chao-Chen Lin, Jan Seikowski, Angel Pérez-Lara, Reinhard Jahn, Claudia Höbartner, Peter Jomo Walla

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

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24

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Direct evidence for BBSome-associated intraflagellar transport reveals distinct properties of native mammalian cilia (2014)

Corey L. Williams; Jeremy C. McIntyre; Stephen R. Norris; Paul M. Jenkins; Lian Zhang; Qinglin Pei; Kristen Verhey; Jeffrey R. Martens

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-17

Beschreibung: Article Loss of olfactory function is one of the many symptoms of the ciliopathy Bardet–Biedl syndrome. Williams et al . show that Bardet–Biedl proteins are components of intraflagellar transport particles within cilia, and directly visualize their trafficking in native mammalian olfactory neurons. Nature Communications doi: 10.1038/ncomms6813 Authors: Corey L. Williams, Jeremy C. McIntyre, Stephen R. Norris, Paul M. Jenkins, Lian Zhang, Qinglin Pei, Kristen Verhey, Jeffrey R. Martens

Digitale ISSN: 2041-1723

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

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A chromatin activity-based chemoproteomic approach reveals a transcriptional repressome for gene-specific silencing (2014)

Cui Liu; Yanbao Yu; Feng Liu; Xin Wei; John A. Wrobel; Harsha P. Gunawardena; Li Zhou; Jian Jin; Xian Chen

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-17

Beschreibung: Article Immune cell pro-inflammatory gene expression is suppressed following prolonged stimulation. Using a chemoproteomic approach, the authors show that methyltransferase G9a forms a protein complex that promotes the transcriptional repressor activity of c-Myc to repress inflammation-induced gene expression. Nature Communications doi: 10.1038/ncomms6733 Authors: Cui Liu, Yanbao Yu, Feng Liu, Xin Wei, John A. Wrobel, Harsha P. Gunawardena, Li Zhou, Jian Jin, Xian Chen

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Low MITF/AXL ratio predicts early resistance to multiple targeted drugs in melanoma (2014)

Judith Müller; Oscar Krijgsman; Jennifer Tsoi; Lidia Robert; Willy Hugo; Chunying Song; Xiangju Kong; Patricia A. Possik; Paulien D. M. Cornelissen-Steijger; Marnix H Geukes Foppen; Kristel Kemper; Colin R. Goding; Ultan McDermott; Christian Blank; John Haanen; Thomas G. Graeber; Antoni Ribas; Roger S. Lo; Daniel S. Peeper

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-17

Beschreibung: Article Increased expression of MITF transcription factor is thought to promote melanoma progression and kinase inhibitor resistance. Here Muller et al . show that MITF loss is also common in melanomas and confers kinase inhibitor resistance due to upregulation of AXL and other receptor tyrosine kinases. Nature Communications doi: 10.1038/ncomms6712 Authors: Judith Müller, Oscar Krijgsman, Jennifer Tsoi, Lidia Robert, Willy Hugo, Chunying Song, Xiangju Kong, Patricia A. Possik, Paulien D. M. Cornelissen-Steijger, Marnix H Geukes Foppen, Kristel Kemper, Colin R. Goding, Ultan McDermott, Christian Blank, John Haanen, Thomas G. Graeber, Antoni Ribas, Roger S. Lo, Daniel S. Peeper

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Measurement of the branching fractions and lifetime of the 5D_{5/2} level of Ba^{+} (2014)

Carolyn Auchter, Thomas W. Noel, Matthew R. Hoffman, Spencer R. Williams, and Boris B. Blinov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-18

Beschreibung: Author(s): Carolyn Auchter, Thomas W. Noel, Matthew R. Hoffman, Spencer R. Williams, and Boris B. Blinov We present a measurement of the branching fractions for decay from the long-lived 5D 5/2 level in 138 Ba + . The branching fraction for decay into the 6S 1/2 ground state was found to be 0.846(25) stat (4) sys . We also report an improved measurement of the 5D 5/2 lifetime, τ 5D 5/2 =31.2(0.9) s. Together these ... [Phys. Rev. A 90, 060501] Published Wed Dec 17, 2014

Schlagwort(e): Atomic and molecular structure and dynamics

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Thema: Physik

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Information-theoretical formulation of anyonic entanglement (2014)

Kohtaro Kato, Fabian Furrer, and Mio Murao

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-18

Beschreibung: Author(s): Kohtaro Kato, Fabian Furrer, and Mio Murao Anyonic systems are modeled by topologically protected Hilbert spaces which obey complex superselection rules restricting possible operations. These Hilbert spaces cannot be decomposed into tensor products of spatially localized subsystems, whereas the tensor product structure is a foundation of the... [Phys. Rev. A 90, 062325] Published Wed Dec 17, 2014

Schlagwort(e): Quantum information

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Propagation style controls lava–snow interactions (2014)

B. R. Edwards; A. Belousov; M. Belousova

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-18

Beschreibung: Article How volcanoes and the cryosphere interact is of interest for understanding hazard mitigation at ice-clad volcanoes and for paleoclimate studies. Here, the authors provide quantitative details from an eruption in Kamchatka, demonstrating that two kinds of lava, ′a′a and pahoehoe, produced different snowpack responses. Nature Communications doi: 10.1038/ncomms6666 Authors: B. R. Edwards, A. Belousov, M. Belousova

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Manifestation of unconventional biexciton states in quantum dots (2014)

Gerald Hönig; Gordon Callsen; Andrei Schliwa; Stefan Kalinowski; Christian Kindel; Satoshi Kako; Yasuhiko Arakawa; Dieter Bimberg; Axel Hoffmann

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-18

Beschreibung: Article Artificial atoms usually constitute an orbital structure for trapped charge carriers. Here, Hönig et al . demonstrate that polarization fields and large charge carrier masses can dilute the common orbital conception and find a hybrid-biexciton molecule that enables anomalous spin configurations. Nature Communications doi: 10.1038/ncomms6721 Authors: Gerald Hönig, Gordon Callsen, Andrei Schliwa, Stefan Kalinowski, Christian Kindel, Satoshi Kako, Yasuhiko Arakawa, Dieter Bimberg, Axel Hoffmann

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Bacteria can mobilize nematode-trapping fungi to kill nematodes (2014)

Xin Wang; Guo-Hong Li; Cheng-Gang Zou; Xing-Lai Ji; Tong Liu; Pei-Ji Zhao; Lian-Ming Liang; Jian-Ping Xu; Zhi-Qiang An; Xi Zheng; Yue-Ke Qin; Meng-Qing Tian; You-Yao Xu; Yi-Cheng Ma; Ze-Fen Yu; Xiao-Wei Huang; Shu-Qun Liu; Xue-Mei Niu; Jin-Kui Yang; Ying Huang; Ke-Qin Zhang

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In: Nature Communications

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Publikationsdatum: 2014-12-18

Beschreibung: Article Certain soil fungi form specialized cellular structures or 'traps' to feed on nematodes, which in turn eat bacteria. Here, the authors show that urea released from bacteria induces trap formation in the fungi and this promotes nematode elimination. Nature Communications doi: 10.1038/ncomms6776 Authors: Xin Wang, Guo-Hong Li, Cheng-Gang Zou, Xing-Lai Ji, Tong Liu, Pei-Ji Zhao, Lian-Ming Liang, Jian-Ping Xu, Zhi-Qiang An, Xi Zheng, Yue-Ke Qin, Meng-Qing Tian, You-Yao Xu, Yi-Cheng Ma, Ze-Fen Yu, Xiao-Wei Huang, Shu-Qun Liu, Xue-Mei Niu, Jin-Kui Yang, Ying Huang, Ke-Qin Zhang

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BMP signalling regulates the pre-implantation development of extra-embryonic cell lineages in the mouse embryo (2014)

Sarah J. L. Graham; Krzysztof B. Wicher; Agnieszka Jedrusik; Guoji Guo; Wishva Herath; Paul Robson; Magdalena Zernicka-Goetz

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In: Nature Communications

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Publikationsdatum: 2014-12-18

Beschreibung: Article BMP signalling is important in early post-implantation embryonic development. Here the authors perform mRNA sequencing of inside and outside cells of pre-implantation mouse embryos and show that BMP signalling is critical for the development of the two extra-embryonic lineages at this early stage. Nature Communications doi: 10.1038/ncomms6667 Authors: Sarah J. L. Graham, Krzysztof B. Wicher, Agnieszka Jedrusik, Guoji Guo, Wishva Herath, Paul Robson, Magdalena Zernicka-Goetz

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High quality-factor optical nanocavities in bulk single-crystal diamond (2014)

Michael J. Burek; Yiwen Chu; Madelaine S. Z. Liddy; Parth Patel; Jake Rochman; Srujan Meesala; Wooyoung Hong; Qimin Quan; Mikhail D. Lukin; Marko Lončar

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In: Nature Communications

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Publikationsdatum: 2014-12-18

Beschreibung: Article Single-crystal diamond is a promising material for applications in classical and quantum optics, but the lack of scalable fabrication remains an issue. Here, Burek et al . adapt angle-etching nanofabrication techniques to realize ring resonators and photonic crystal cavities in single crystal diamond with quality factors in excess of 10 5 . Nature Communications doi: 10.1038/ncomms6718 Authors: Michael J. Burek, Yiwen Chu, Madelaine S. Z. Liddy, Parth Patel, Jake Rochman, Srujan Meesala, Wooyoung Hong, Qimin Quan, Mikhail D. Lukin, Marko Lončar

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A dynamic supramolecular polymer with stimuli-responsive handedness for in situ probing of enzymatic ATP hydrolysis (2014)

Mohit Kumar; Patrick Brocorens; Claire TonneléDavid Beljonne; Mathieu Surin; Subi J. George

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-18

Beschreibung: Article Interesting changes in physical and optical properties can result from the binding of small molecules to supramolecular polymers. Here, the authors present an ATP assay, using a supramolecular helix to switch between left- and right-handed conformations on binding different adenosine phosphates. Nature Communications doi: 10.1038/ncomms6793 Authors: Mohit Kumar, Patrick Brocorens, Claire Tonnelé, David Beljonne, Mathieu Surin, Subi J. George

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Transposable element islands facilitate adaptation to novel environments in an invasive species (2014)

Lukas Schrader; Jay W. Kim; Daniel Ence; Aleksey Zimin; Antonia Klein; Katharina Wyschetzki; Tobias Weichselgartner; Carsten Kemena; Johannes Stökl; Eva Schultner; Yannick Wurm; Christopher D. Smith; Mark Yandell; Jürgen Heinze; Jürgen Gadau; Jan Oettler

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-18

Beschreibung: Article Genetic variation is key to species evolution. Here the authors sequence two phenotypically distinct populations of the ant Cardiocondyla obscurior , and find accumulations of transposable elements correlating with genetic variation that may have a role in differentiation, adaptation and speciation. Nature Communications doi: 10.1038/ncomms6495 Authors: Lukas Schrader, Jay W. Kim, Daniel Ence, Aleksey Zimin, Antonia Klein, Katharina Wyschetzki, Tobias Weichselgartner, Carsten Kemena, Johannes Stökl, Eva Schultner, Yannick Wurm, Christopher D. Smith, Mark Yandell, Jürgen Heinze, Jürgen Gadau, Jan Oettler

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A recoverable state of axon injury persists for hours after spinal cord contusion in vivo (2014)

Philip R. Williams; Bogdan-Nicolae Marincu; Catherine D. Sorbara; Christoph F. Mahler; Adrian-Minh Schumacher; Oliver Griesbeck; Martin Kerschensteiner; Thomas Misgeld

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In: Nature Communications

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Publikationsdatum: 2014-12-18

Beschreibung: Article A potential therapeutic strategy for spinal cord injury (SCI) is to maintain continuity of damaged axons after contusion, but the viability of such strategies depends on the degree to which initially injured axons can recover. Here the authors use morphological and molecular in vivo imaging after contusion SCI in mice, to show that injured axons persist in a metastable state for hours. Nature Communications doi: 10.1038/ncomms6683 Authors: Philip R. Williams, Bogdan-Nicolae Marincu, Catherine D. Sorbara, Christoph F. Mahler, Adrian-Minh Schumacher, Oliver Griesbeck, Martin Kerschensteiner, Thomas Misgeld

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An ecdysone-responsive nuclear receptor regulates circadian rhythms in Drosophila (2014)

Shailesh Kumar; Dechun Chen; Christopher Jang; Alexandra Nall; Xiangzhong Zheng; Amita Sehgal

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-18

Beschreibung: Article The mammalian circadian clock is influenced by nuclear receptors such as Rev-Erb. Here Kumar et al . show that ecdysone-induced protein 75 (E75), a fly homologue of Rev-Erb, regulates circadian rhythms in Drosophila , and demonstrate that E75 protects the clock against environmental stressors. Nature Communications doi: 10.1038/ncomms6697 Authors: Shailesh Kumar, Dechun Chen, Christopher Jang, Alexandra Nall, Xiangzhong Zheng, Amita Sehgal

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Trajectory-based analysis of low-energy electrons and photocurrents generated in strong-field ionization (2014)

Jinlei Liu, Wenbo Chen, Bin Zhang, Jing Zhao, Jianhua Wu, Jianmin Yuan, and Zengxiu Zhao

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-18

Beschreibung: Author(s): Jinlei Liu, Wenbo Chen, Bin Zhang, Jing Zhao, Jianhua Wu, Jianmin Yuan, and Zengxiu Zhao The three-dimensional classical-trajectory Monte Carlo method is employed to investigate low-energy photoelectron spectra in above-threshold ionization by strong laser fields. By connecting the tunneling coordinates with the final momentum-energy spectra, we identify the effects of the Coulomb poten... [Phys. Rev. A 90, 063420] Published Wed Dec 17, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Thema: Physik

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Nonequilibrium states of a quenched Bose gas (2014)

Ben Kain and Hong Y. Ling

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-18

Beschreibung: Author(s): Ben Kain and Hong Y. Ling Yin and Radzihovsky [X. Yin and L. Radzihovsky, Phys. Rev. A 88 , 063611 (2013)PLRAAN10.1103/PhysRevA.88.063611] recently developed a self-consistent extension of a Bogoliubov theory, in which the condensate number density n c is treated as a mean field that changes with time, in order to analyze a JI... [Phys. Rev. A 90, 063626] Published Wed Dec 17, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Thema: Physik

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An epigenetic switch induced by Shh signalling regulates gene activation during development and medulloblastoma growth (2014)

Xuanming Shi; Zilai Zhang; Xiaoming Zhan; Mou Cao; Takashi Satoh; Shizuo Akira; Karl Shpargel; Terry Magnuson; Qingtian Li; Rongfu Wang; Chaochen Wang; Kai Ge; Jiang Wu

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-07

Beschreibung: Article The Sonic hedgehog (Shh) signalling pathway plays important roles during development and its abnormal activation has been implicated in cancer. Here the authors uncover an epigenetic switch in the Shh pathway that involves the PRC2, Jmjd3/Kdm6b and Set1/MLL complexes in regulating signalling induced gene activation. Nature Communications doi: 10.1038/ncomms6425 Authors: Xuanming Shi, Zilai Zhang, Xiaoming Zhan, Mou Cao, Takashi Satoh, Shizuo Akira, Karl Shpargel, Terry Magnuson, Qingtian Li, Rongfu Wang, Chaochen Wang, Kai Ge, Jiang Wu

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Unravelling the multilayer growth of the fullerene C60 in real time (2014)

S. Bommel; N. Kleppmann; C. Weber; H. Spranger; P. Schäfer; J. Novak; S.V. Roth; F. Schreiber; S.H.L. Klapp; S. Kowarik

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In: Nature Communications

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Publikationsdatum: 2014-11-07

Beschreibung: Article Despite the technological relevance of molecular thin films, there is limited understanding of their growth on a molecular level. Here, the authors characterize the relevant processes in real time and determine energy parameters using a combination of X-ray techniques and kinetic Monte Carlo simulations. Nature Communications doi: 10.1038/ncomms6388 Authors: S. Bommel, N. Kleppmann, C. Weber, H. Spranger, P. Schäfer, J. Novak, S.V. Roth, F. Schreiber, S.H.L. Klapp, S. Kowarik

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ZBTB20 regulates nociception and pain sensation by modulating TRP channel expression in nociceptive sensory neurons (2014)

An-Jing Ren; Kai Wang; Huan Zhang; Anjun Liu; Xianhua Ma; Qing Liang; Dongmei Cao; John N. Wood; David Z. He; Yu-Qiang Ding; Wen-Jun Yuan; Zhifang Xie; Weiping J. Zhang

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-07

Beschreibung: Article The upregulation of TRP ion channels is implicated in pain processing. In this study, the authors show that the zinc-finger protein ZBTB20 is responsible for TRP channel upregulation, and eliminating ZBTB20 from pain-sensing neurons in mouse models of pain results in the reduction of pain-like sensation. Nature Communications doi: 10.1038/ncomms5984 Authors: An-Jing Ren, Kai Wang, Huan Zhang, Anjun Liu, Xianhua Ma, Qing Liang, Dongmei Cao, John N. Wood, David Z. He, Yu-Qiang Ding, Wen-Jun Yuan, Zhifang Xie, Weiping J. Zhang

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Quantum yield and excitation rate of single molecules close to metallic nanostructures (2014)

Phil Holzmeister; Enrico Pibiri; Jürgen J. Schmied; Tapasi Sen; Guillermo P. Acuna; Philip Tinnefeld

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-07

Beschreibung: Article Metal nanostructures strongly influence fluorescence of nearby molecules, ranging from significant enhancement to total quenching. To decode the precise interactions taking place, Holzmeister et al . present a method that distinguishes the contributions to excitation, radiative and non-radiative rates. Nature Communications doi: 10.1038/ncomms6356 Authors: Phil Holzmeister, Enrico Pibiri, Jürgen J. Schmied, Tapasi Sen, Guillermo P. Acuna, Philip Tinnefeld

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Fano resonance and dipolar relaxation in lead-free relaxors (2014)

D. Wang; J. Hlinka; A. A. Bokov; Z. -G. Ye; P. Ondrejkovic; J. Petzelt; L. Bellaiche

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-07

Beschreibung: Article Relaxor ferroelectrics are important materials that are used in electronic capacitors and other devices, although the origin of their unusual properties remains poorly understood. Here, the authors predict that Fano resonances between phonon modes could explain some properties of lead-free relaxors. Nature Communications doi: 10.1038/ncomms6100 Authors: D. Wang, J. Hlinka, A. A. Bokov, Z. -G. Ye, P. Ondrejkovic, J. Petzelt, L. Bellaiche

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Disproving the Peres conjecture by showing Bell nonlocality from bound entanglement (2014)

Tamás Vértesi; Nicolas Brunner

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In: Nature Communications

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Publikationsdatum: 2014-11-07

Beschreibung: Article A longstanding question in quantum information is the validity of the disputed Peres conjecture stating that bound entangled state can never lead to Bell inequality violation. Here Vértesi and Brunner prove that the Peres conjecture is false by providing an explicit counter example. Nature Communications doi: 10.1038/ncomms6297 Authors: Tamás Vértesi, Nicolas Brunner

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Cotton cytochrome P450 CYP82D regulates systemic cell death by modulating the octadecanoid pathway (2014)

Longqing Sun; Longfu Zhu; Li Xu; Daojun Yuan; Ling Min; Xianlong Zhang

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-07

Beschreibung: Article Oxylipin signalling is known to play important roles in plant growth, development and defence against pathogens. Here Sun et al. identify a novel cytochrome P450 in cotton and show that its suppression leads to activation of plant defence responses and alteration of oxylipin metabolism. Nature Communications doi: 10.1038/ncomms6372 Authors: Longqing Sun, Longfu Zhu, Li Xu, Daojun Yuan, Ling Min, Xianlong Zhang

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Fidelity of measurement-based quantum computation in a bosonic environment (2014)

Jian Wang, Ding Zhong, Liangzhu Mu, and Heng Fan

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): Jian Wang, Ding Zhong, Liangzhu Mu, and Heng Fan We investigate the fidelity of measurement-based quantum computation (MBQC) when it is coupled with a boson environment, by measuring the cluster-state fidelity and gate fidelity. Two schemes of cluster-state preparation are studied. In the controlled-Z (CZ) creation scheme, cluster states are prepa... [Phys. Rev. A 90, 052306] Published Thu Nov 06, 2014

Schlagwort(e): Quantum information

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Relativistic effects in photoionization time delay near the Cooper minimum of noble-gas atoms (2014)

Soumyajit Saha, Ankur Mandal, Jobin Jose, Hari R. Varma, P. C. Deshmukh, A. S. Kheifets, V. K. Dolmatov, and S. T. Manson

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): Soumyajit Saha, Ankur Mandal, Jobin Jose, Hari R. Varma, P. C. Deshmukh, A. S. Kheifets, V. K. Dolmatov, and S. T. Manson The time delay of photoemission from noble-gas atoms is analyzed in the vicinity of a Cooper minimum, showing that the presence of the Cooper minimum in one channel has a strong effect on the time delay in other channels. [Phys. Rev. A 90, 053406] Published Thu Nov 06, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Quantum illumination in the presence of photon loss (2014)

Sheng; Li Zhang, Xu; Bo Zou, Jian; Hong Shi, Jian; Sheng Guo, and Guang; Can Guo

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): ShengLi Zhang, XuBo Zou, JianHong Shi, JianSheng Guo, and GuangCan Guo Quantum illumination can be used to detect the low-reflectivity target hidden in strong background noise. All known results are based on the assumption of ideal photon transmission and reception. In this paper, we investigate the impact of photon loss on the performance of quantum illumination in tw... [Phys. Rev. A 90, 052308] Published Thu Nov 06, 2014

Schlagwort(e): Quantum information

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Asymmetric quantum hypothesis testing with Gaussian states (2014)

Gaetana Spedalieri and Samuel L. Braunstein

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): Gaetana Spedalieri and Samuel L. Braunstein We consider the asymmetric formulation of quantum hypothesis testing, where two quantum hypotheses have different associated costs. In this problem, the aim is to minimize the probability of false negatives and the optimal performance is provided by the quantum Hoeffding bound. After a brief review ... [Phys. Rev. A 90, 052307] Published Thu Nov 06, 2014

Schlagwort(e): Quantum information

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Fast transport of mixed-species ion chains within a Paul trap (2014)

M. Palmero, R. Bowler, J. P. Gaebler, D. Leibfried, and J. G. Muga

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): M. Palmero, R. Bowler, J. P. Gaebler, D. Leibfried, and J. G. Muga We investigate the dynamics of mixed-species ion crystals during transport between spatially distinct locations in a linear Paul trap in the diabatic regime. In a general mixed-species crystal, all degrees of freedom along the direction of transport are excited by an accelerating well, so unlike the... [Phys. Rev. A 90, 053408] Published Thu Nov 06, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Thermally activated local collapse of a flattened dipolar condensate (2014)

E. B. Linscott and P. B. Blakie

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): E. B. Linscott and P. B. Blakie An analytical model that quantifies the energy barrier to local collapse of a flattened dipolar condensate is developed, and a stochastic Gross-Pitaevskii theory is used to perform finite-temperature simulations verifying the local collapse scenario. [Phys. Rev. A 90, 053605] Published Thu Nov 06, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Intrinsic anharmonic effects on the phonon frequencies and effective spin-spin interactions in a quantum simulator made from trapped ions in a linear Paul trap (2014)

M. McAneny and J. K. Freericks

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): M. McAneny and J. K. Freericks The Coulomb repulsion between ions in a linear Paul trap gives rise to anharmonic terms in the potential energy when expanded about the equilibrium positions. We examine the effect of these anharmonic terms on the accuracy of a quantum simulator made from trapped ions. To be concrete, we consider a ... [Phys. Rev. A 90, 053405] Published Thu Nov 06, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Dynamics of the effective mass and the anomalous velocity in two-dimensional lattices (2014)

Y. Fang, Federico Duque-Gomez, and J. E. Sipe

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): Y. Fang, Federico Duque-Gomez, and J. E. Sipe The dynamics of wave packets in periodic potentials and subject to a sudden external force is studied, and it is shown that the usual semiclassical description in terms of effective mass and anomalous velocity requires corrections in such a case. [Phys. Rev. A 90, 053407] Published Thu Nov 06, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Shaping topological properties of the band structures in a shaken optical lattice (2014)

Shao-Liang Zhang and Qi Zhou

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): Shao-Liang Zhang and Qi Zhou The realization of band structures with nontrivial topological properties in an optical lattice is an exciting topic in current studies of ultracold atoms. Here we point out that this lofty goal can be achieved by using a simple scheme of shaking an optical lattice, which is directly applicable in c... [Phys. Rev. A 90, 051601] Published Thu Nov 06, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Gold-promoted structurally ordered intermetallic palladium cobalt nanoparticles for the oxygen reduction reaction (2014)

Kurian A. Kuttiyiel; Kotaro Sasaki; Dong Su; Lijun Wu; Yimei Zhu; Radoslav R. Adzic

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-08

Beschreibung: Article There is substantial research into new catalysts for oxygen reduction. Here, the authors report a structurally ordered gold–palladium–cobalt intermetallic catalyst which exhibits comparable activity to platinum/carbon in both acid and alkaline media, and probe its structure-activity behaviour. Nature Communications doi: 10.1038/ncomms6185 Authors: Kurian A. Kuttiyiel, Kotaro Sasaki, Dong Su, Lijun Wu, Yimei Zhu, Radoslav R. Adzic

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Rectified directional sensing in long-range cell migration (2014)

Akihiko Nakajima; Shuji Ishihara; Daisuke Imoto; Satoshi Sawai

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-08

Beschreibung: Article Cell migration is regulated by spatial and temporal information, but how the two are integrated is not well understood. Here, Nakajima et al . use dynamic microfluidics gradients to show that Ras activation at the leading edge of Dictyostelium is suppressed when chemoattractant concentration decreases over time. Nature Communications doi: 10.1038/ncomms6367 Authors: Akihiko Nakajima, Shuji Ishihara, Daisuke Imoto, Satoshi Sawai

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Titania single crystals with a curved surface (2014)

Shuang Yang; Bing Xing Yang; Long Wu; Yu Hang Li; Porun Liu; Huijun Zhao; Yan Yan Yu; Xue Qing Gong; Hua Gui Yang

Springer Nature

In: Nature Communications

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Beschreibung: Article Thermodynamics typically favour the formation of crystals with flat facets. Here, the authors report an approach for the synthesis of curved boundaries in titania single crystals, composed of high index microfacets. Nature Communications doi: 10.1038/ncomms6355 Authors: Shuang Yang, Bing Xing Yang, Long Wu, Yu Hang Li, Porun Liu, Huijun Zhao, Yan Yan Yu, Xue Qing Gong, Hua Gui Yang

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Orbital Asian summer monsoon dynamics revealed using an isotope-enabled global climate model (2014)

Thibaut Caley; Didier M. Roche; Hans Renssen

Springer Nature

In: Nature Communications

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Beschreibung: Article Asian speleothem δ 18 O records are widely used as a proxy for summer monsoon intensity, but their validity has been questioned. Here, the authors evaluate their validity using a 150,000-year transient simulation from an isotope-enabled global climate model. Nature Communications doi: 10.1038/ncomms6371 Authors: Thibaut Caley, Didier M. Roche, Hans Renssen

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Synthesizing AND gate genetic circuits based on CRISPR-Cas9 for identification of bladder cancer cells (2014)

Yuchen Liu; Yayue Zeng; Li Liu; Chengle Zhuang; Xing Fu; Weiren Huang; Zhiming Cai

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-08

Beschreibung: Article Tools derived from synthetic biology offer powerful means to refine drug delivery and disease detection. Liu et al . engineer a logical AND gate using CRISPR-Cas9 to drive gene expression only cells in which two promoters are active, and use it to selectively inhibit the growth of bladder cancer cells in vitro . Nature Communications doi: 10.1038/ncomms6393 Authors: Yuchen Liu, Yayue Zeng, Li Liu, Chengle Zhuang, Xing Fu, Weiren Huang, Zhiming Cai

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Entanglement classification of pure symmetric states via spin coherent states (2014)

A. Mandilara, T. Coudreau, A. Keller, and P. Milman

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): A. Mandilara, T. Coudreau, A. Keller, and P. Milman We give explicit expressions for canonical states labeling the vast majority of entanglement equivalent classes of symmetric states of qubits and efficient algorithms for reducing a given state to the representative of the class it belongs. This way, we achieve an almost complete classification unde... [Phys. Rev. A 90, 050302] Published Fri Nov 07, 2014

Schlagwort(e): Quantum information

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Electrically controlled one-way photon flow in plasmonic nanostructures (2014)

Artur Davoyan; Nader Engheta

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-08

Beschreibung: Article If photonics and electronics are to form hybrid information processing systems, it will be necessary to manipulate and isolate light electrically, over short distances. Davoyan and Engheta propose a route to achieve this in plasmonic waveguides by exploiting the magnetic field induced by a direct current. Nature Communications doi: 10.1038/ncomms6250 Authors: Artur Davoyan, Nader Engheta

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Pulling extremely anisotropic lossy particles using light without intensity gradient (2014)

Andrey Novitsky and Cheng-Wei Qiu

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): Andrey Novitsky and Cheng-Wei Qiu We study the effect of pulling optical force acting on a nonmagnetic anisotropic bead in electromagnetic fields without intensity gradient. Extreme anisotropy can be realized by a hyperbolic metamaterial made of metal-dielectric multilayers. We find that a passive anisotropic Rayleigh particle canno... [Phys. Rev. A 90, 053815] Published Fri Nov 07, 2014

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Generation of harmonics via multiphoton resonant excitation of hydrogenlike ions in an x-ray free-electron-laser field (2014)

H. K. Avetissian, B. R. Avchyan, and G. F. Mkrtchian

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): H. K. Avetissian, B. R. Avchyan, and G. F. Mkrtchian The coherent radiation spectrum of highly charged hydrogenlike ions in an intense x-ray free-electron-laser field is considered. The spectrum corresponding to harmonic generation in the resonant multiphoton excitation regime is investigated both analytically and numerically, arising from the Dirac H... [Phys. Rev. A 90, 053812] Published Fri Nov 07, 2014

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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n-type chalcogenides by ion implantation (2014)

Mark A. Hughes; Yanina Fedorenko; Behrad Gholipour; Jin Yao; Tae-Hoon Lee; Russell M. Gwilliam; Kevin P. Homewood; Steven Hinder; Daniel W. Hewak; Stephen R. Elliott; Richard J. Curry

Springer Nature

In: Nature Communications

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Beschreibung: Article The use of chalcogenide glasses in simple electronic devices, such as a p-n junction, is hindered by the lack of n-type material. Here, Hughes et al. demonstrate n-type doping of GeTe and GaLaSO amorphous films using bismuth-ion implantation. Nature Communications doi: 10.1038/ncomms6346 Authors: Mark A. Hughes, Yanina Fedorenko, Behrad Gholipour, Jin Yao, Tae-Hoon Lee, Russell M. Gwilliam, Kevin P. Homewood, Steven Hinder, Daniel W. Hewak, Stephen R. Elliott, Richard J. Curry

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An extremely low-density human population exterminated New Zealand moa (2014)

Richard N. Holdaway; Morten E. Allentoft; Christopher Jacomb; Charlotte L. Oskam; Nancy R. Beavan; Michael Bunce

Springer Nature

In: Nature Communications

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Beschreibung: Article It is generally accepted that Polynesian settlers were directly responsible for the extinction of New Zealand moa. Here, the authors present three series of radiocarbon ages that define the brief period of interaction between Polynesians and moa, and show that high human population densities are not a prerequisite for the extinction of megafauna populations. Nature Communications doi: 10.1038/ncomms6436 Authors: Richard N. Holdaway, Morten E. Allentoft, Christopher Jacomb, Charlotte L. Oskam, Nancy R. Beavan, Michael Bunce

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Genomic identification and characterization of the pseudoautosomal region in highly differentiated avian sex chromosomes (2014)

Linnéa Smeds; Takeshi Kawakami; Reto Burri; Paulina Bolivar; Arild Husby; Anna Qvarnström; Severin Uebbing; Hans Ellegren

Springer Nature

In: Nature Communications

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Beschreibung: Article The genetic basis of sex chromosome pseudoautosomal regions (PAR) in organisms with female heterogamety is largely unknown. Smeds et al. provide the first molecular characterization of the PAR in birds with differentiated sex chromosomes and show a potential recombination hotspot and no evidence for strong sexual antagonism in this region. Nature Communications doi: 10.1038/ncomms6448 Authors: Linnéa Smeds, Takeshi Kawakami, Reto Burri, Paulina Bolivar, Arild Husby, Anna Qvarnström, Severin Uebbing, Hans Ellegren

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Spin–orbital dynamics in a system of polar molecules (2014)

Sergey V. Syzranov; Michael L. Wall; Victor Gurarie; Ana Maria Rey

Springer Nature

In: Nature Communications

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Beschreibung: Article Spin–orbit coupling gives rise to a plethora of rich phenomena in many condensed matter and atomic systems. Syzranov et al. study the role of dipole–dipole interactions in ultracold polar molecule gases and show that they produce an effective spin–orbit coupling that generates chiral excitations. Nature Communications doi: 10.1038/ncomms6391 Authors: Sergey V. Syzranov, Michael L. Wall, Victor Gurarie, Ana Maria Rey

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Origin of the unique ventilatory apparatus of turtles (2014)

Tyler R. Lyson; Emma R. Schachner; Jennifer Botha-Brink; Torsten M. Scheyer; Markus Lambertz; G. S. Bever; Bruce S. Rubidge; Kevin de Queiroz

Springer Nature

In: Nature Communications

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Beschreibung: Article The origin of the unique turtle lung ventilatory apparatus is poorly understood. Here the authors show an increase in body wall rigidity early in evolution that allowed the abdominal muscles to become specialized for breathing and the ribs to eventually form the iconic turtle shell. Nature Communications doi: 10.1038/ncomms6211 Authors: Tyler R. Lyson, Emma R. Schachner, Jennifer Botha-Brink, Torsten M. Scheyer, Markus Lambertz, G. S. Bever, Bruce S. Rubidge, Kevin de Queiroz

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Mechanistic determinants of the directionality and energetics of active export by a heterodimeric ABC transporter (2014)

Nina Grossmann; Ahmet S. Vakkasoglu; Sabine Hulpke; Rupert Abele; Rachelle Gaudet; Robert Tampé

Springer Nature

In: Nature Communications

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Beschreibung: Article ABC systems are an important class of transporters involved in human pathologies for which the basis for transport remains poorly understood. Here the authors suggest a molecular basis for ATP-powered vectorial peptide export by the human transporter associated with antigen processing (TAP). Nature Communications doi: 10.1038/ncomms6419 Authors: Nina Grossmann, Ahmet S. Vakkasoglu, Sabine Hulpke, Rupert Abele, Rachelle Gaudet, Robert Tampé

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Large surface relaxation in the organic semiconductor tetracene (2014)

Hazuki Morisaki; Takashi Koretsune; Chisa Hotta; Jun Takeya; Tsuyoshi Kimura; Yusuke Wakabayashi

Springer Nature

In: Nature Communications

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Beschreibung: Article Interfacial charge transport determines the performance of organic semiconductors, yet the surface influence is poorly understood. Here, Morisaki et al. observe surface relaxation and its resulting transport properties in the first monolayer of tetracene, which are dissimilar to those of the bulk. Nature Communications doi: 10.1038/ncomms6400 Authors: Hazuki Morisaki, Takashi Koretsune, Chisa Hotta, Jun Takeya, Tsuyoshi Kimura, Yusuke Wakabayashi

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Cooperative dual palladium/silver catalyst for direct difluoromethylation of aryl bromides and iodides (2014)

Yang Gu; Xuebing Leng; Qilong Shen

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-09

Beschreibung: Article Difluoromethylation of organic molecules typically requires stoichiometric metal salts or harsh conditions. Here, the authors report a dual metal catalytic system for difluoromethylation allowing mild and direct functionalization of aryl halides, including highly functionalized molecules. Nature Communications doi: 10.1038/ncomms6405 Authors: Yang Gu, Xuebing Leng, Qilong Shen

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

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The molecular structure of the left-handed supra-molecular helix of eukaryotic polyribosomes (2014)

Alexander G. Myasnikov; Zhanna A. Afonina; Jean-François Ménétret; Vladimir A. Shirokov; Alexander S. Spirin; Bruno P. Klaholz

Springer Nature

In: Nature Communications

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Beschreibung: Article During translation, several ribosomes assemble on an mRNA strand to form polyribosomes. Here the authors describe—using cryo electron tomography—a compact state of the eukaryotic polysome where individual ribosomes contact each other and form a tight helical assembly that creates a continuous inner channel for the mRNA. Nature Communications doi: 10.1038/ncomms6294 Authors: Alexander G. Myasnikov, Zhanna A. Afonina, Jean-François Ménétret, Vladimir A. Shirokov, Alexander S. Spirin, Bruno P. Klaholz

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NAA10 controls osteoblast differentiation and bone formation as a feedback regulator of Runx2 (2014)

Haejin Yoon; Hye-Lim Kim; Yang-Sook Chun; Dong Hoon Shin; Kyoung-Hwa Lee; Chan Soo Shin; Dong Yeon Lee; Hong-Hee Kim; Zang Hee Lee; Hyun-Mo Ryoo; Mi-Ni Lee; Goo Taeg Oh; Jong-Wan Park

Springer Nature

In: Nature Communications

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Beschreibung: Article N -alpha-acetyltransferase 10 (NAA10) regulates cell growth and proliferation. Here the authors show that NAA10 also has a role in osteogenesis, by fine-tuning the activity of the osteogenic transcription factor Runx2. Nature Communications doi: 10.1038/ncomms6176 Authors: Haejin Yoon, Hye-Lim Kim, Yang-Sook Chun, Dong Hoon Shin, Kyoung-Hwa Lee, Chan Soo Shin, Dong Yeon Lee, Hong-Hee Kim, Zang Hee Lee, Hyun-Mo Ryoo, Mi-Ni Lee, Goo Taeg Oh, Jong-Wan Park

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

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Bond competition and phase evolution on the IrTe2 surface (2014)

Qing Li; Wenzhi Lin; Jiaqiang Yan; Xin Chen; Anthony G. Gianfrancesco; David J. Singh; David Mandrus; Sergei V. Kalinin; Minghu Pan

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-09

Beschreibung: Article Understanding the structural relationship and electronic states between incommensurate/commensurate phases remains an ongoing challenge. Here, the authors report incommensurate structures and electronic roughness on the surface of cleaved IrTe 2 . Nature Communications doi: 10.1038/ncomms6358 Authors: Qing Li, Wenzhi Lin, Jiaqiang Yan, Xin Chen, Anthony G. Gianfrancesco, David J. Singh, David Mandrus, Sergei V. Kalinin, Minghu Pan

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

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Two-step procedure to discriminate discordant from classical correlated or factorized states (2014)

Simone Cialdi, Andrea Smirne, Matteo G. A. Paris, Stefano Olivares, and Bassano Vacchini

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-05

Beschreibung: Author(s): Simone Cialdi, Andrea Smirne, Matteo G. A. Paris, Stefano Olivares, and Bassano Vacchini We devise and experimentally realize a procedure capable of detecting and distinguishing quantum discord and classical correlations as well the presence of factorized states in a joint system-environment setting. Our scheme builds on recent theoretical results showing how the distinguishability betw... [Phys. Rev. A 90, 050301] Published Tue Nov 04, 2014

Schlagwort(e): Quantum information

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Remote creation of a one-qubit mixed state through a short homogeneous spin-1/2 chain (2014)

A. I. Zenchuk

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): A. I. Zenchuk We consider a method of remote mixed state creation of a one-qubit subsystem (receiver) in a spin-1/2 chain governed by the nearest-neighbor XY Hamiltonian. Owing to the evolution of the chain along with the variable local unitary transformation of the one- or two-qubit sender, a large variety of re... [Phys. Rev. A 90, 052302] Published Tue Nov 04, 2014

Schlagwort(e): Quantum information

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Coffman-Kundu-Wootters inequality for fermions (2014)

Gábor Sárosi and Péter Lévay

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Gábor Sárosi and Péter Lévay We derive an inequality for three fermions with six single-particle states which reduces to the sum of the famous Coffman-Kundu-Wootters inequalities when an embedded three-qubit system is considered. We identify the quantities which are playing the role of the concurrence, the three-tangle and the ... [Phys. Rev. A 90, 052303] Published Tue Nov 04, 2014

Schlagwort(e): Quantum information

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Single-scan quantum process tomography (2014)

Abhishek Shukla and T. S. Mahesh

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-05

Beschreibung: Author(s): Abhishek Shukla and T. S. Mahesh The standard procedure for quantum process tomography (QPT) requires a series of experiments. Each experiment involves initialization of the system to a particular basis state, applying the quantum process ɛ on the system, and finally characterizing the output state by quantum state tomography (QST)... [Phys. Rev. A 90, 052301] Published Tue Nov 04, 2014

Schlagwort(e): Quantum information

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Internal decoherence of a Gaussian wave packet in a harmonic potential (2014)

A. Cidrim, F. E. A. dos Santos, and A. O. Caldeira

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-04

Beschreibung: Author(s): A. Cidrim, F. E. A. dos Santos, and A. O. Caldeira We have studied the quantum dissipative problem of a Gaussian wave packet under the influence of a harmonic potential. A phenomenological approach to dissipation is adopted in the light of the well-known model in which the environment is composed of a bath of noninteracting harmonic oscillators. As ... [Phys. Rev. A 90, 052102] Published Mon Nov 03, 2014

Schlagwort(e): Fundamental concepts

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Structural transitions of nearly second order in classical dipolar gases (2014)

Florian Cartarius, Giovanna Morigi, and Anna Minguzzi

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Florian Cartarius, Giovanna Morigi, and Anna Minguzzi Particles with repulsive power-law interactions undergo a transition from a single to a double chain (zigzag) by decreasing the confinement in the transverse direction. We theoretically characterize this transition when the particles are classical dipoles, polarized perpendicularly to the plane in w... [Phys. Rev. A 90, 053601] Published Mon Nov 03, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Scattering resonances and bound states for strongly interacting Rydberg polaritons (2014)

P. Bienias, S. Choi, O. Firstenberg, M. F. Maghrebi, M. Gullans, M. D. Lukin, A. V. Gorshkov, and H. P. Büchler

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): P. Bienias, S. Choi, O. Firstenberg, M. F. Maghrebi, M. Gullans, M. D. Lukin, A. V. Gorshkov, and H. P. Büchler We provide a theoretical framework describing slow-light polaritons interacting via atomic Rydberg states. The method allows us to analytically derive the scattering properties of two polaritons. We identify parameter regimes where polariton-polariton interactions are repulsive. Furthermore, in the ... [Phys. Rev. A 90, 053804] Published Mon Nov 03, 2014

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Optimal control of high-harmonic generation by intense few-cycle pulses (2014)

J. Solanpää, J. A. Budagosky, N. I. Shvetsov-Shilovski, A. Castro, A. Rubio, and E. Räsänen

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): J. Solanpää, J. A. Budagosky, N. I. Shvetsov-Shilovski, A. Castro, A. Rubio, and E. Räsänen At the core of attosecond science lies the ability to generate laser pulses of subfemtosecond duration. In tabletop devices the process relies on high-harmonic generation, where a major challenge is to obtain high yields and high cutoff energies required for the generation of attosecond pulses. We d... [Phys. Rev. A 90, 053402] Published Mon Nov 03, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Electron-spin dynamics in elliptically polarized light waves (2014)

Heiko Bauke, Sven Ahrens, and Rainer Grobe

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Heiko Bauke, Sven Ahrens, and Rainer Grobe We investigate the coupling of the spin angular momentum of light beams with elliptical polarization to the spin degree of freedom of free electrons. It is shown that this coupling, which is of similar origin as the well-known spin-orbit coupling, can lead to spin precession. The spin-precession fre... [Phys. Rev. A 90, 052101] Published Mon Nov 03, 2014

Schlagwort(e): Fundamental concepts

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Bloch bound states in the radiation continuum in a periodic array of dielectric rods (2014)

Evgeny N. Bulgakov and Almas F. Sadreev

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Evgeny N. Bulgakov and Almas F. Sadreev We consider an infinite periodic array of dielectric rods in vacuum with the aim to demonstrate three types of Bloch bound states in the continuum (BSCs): symmetry protected with a zero Bloch vector, embedded in one diffraction channel with nonzero Bloch vector, and embedded in two and three diffrac... [Phys. Rev. A 90, 053801] Published Mon Nov 03, 2014

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Single-photon modulation by the collective emission of an atomic chain (2014)

Zeyang Liao and M. Suhail Zubairy

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Zeyang Liao and M. Suhail Zubairy We study the collective spontaneous emission of a linear atomic chain excited by a single photon. The interaction between the atoms and the common vacuum field can significantly change the eigenenergy and the spontaneous emission rate of the system. Due to the dipole-dipole interactions, the system ... [Phys. Rev. A 90, 053805] Published Mon Nov 03, 2014

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Five-photon sequential double ionization of He in intense extreme-ultraviolet free-electron laser fields (2014)

Y. Hikosaka, M. Fushitani, A. Matsuda, T. Endo, Y. Toida, E. Shigemasa, M. Nagasono, K. Tono, T. Togashi, M. Yabashi, T. Ishikawa, and A. Hishikawa

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-04

Beschreibung: Author(s): Y. Hikosaka, M. Fushitani, A. Matsuda, T. Endo, Y. Toida, E. Shigemasa, M. Nagasono, K. Tono, T. Togashi, M. Yabashi, T. Ishikawa, and A. Hishikawa A multiphoton ionization process of He in intense extreme ultraviolet free-electron laser fields is investigated in a photon energy range of hv=20.1−20.8eV using shot-by-shot photoelectron spectroscopy. A photoelectron peak resulting from sequential double ionization of He due to five-photon absorpt... [Phys. Rev. A 90, 053403] Published Mon Nov 03, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Three-dimensional plasmonic stereoscopic prints in full colour (2014)

Xiao Ming Goh; Yihan Zheng; Shawn J. Tan; Lei Zhang; Karthik Kumar; Cheng-Wei Qiu; Joel K. W. Yang

Springer Nature

In: Nature Communications

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Beschreibung: Article Plasmonic nanostructures enable control over the spatial and spectral dependence of scattered light. Here, the authors use pixels formed of nanoellipse or nanosquare dimers to show polarization-dependent full-colour scattering in reflection, and build 3D stereoscopic colour microprints from them. Nature Communications doi: 10.1038/ncomms6361 Authors: Xiao Ming Goh, Yihan Zheng, Shawn J. Tan, Lei Zhang, Karthik Kumar, Cheng-Wei Qiu, Joel K. W. Yang

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

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Swimming by reciprocal motion at low Reynolds number (2014)

Tian Qiu; Tung-Chun Lee; Andrew G. Mark; Konstantin I. Morozov; Raphael Münster; Otto Mierka; Stefan Turek; Alexander M. Leshansky; Peer Fischer

Springer Nature

In: Nature Communications

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Beschreibung: Article Operating devices that can navigate biomedical fluids and tissues is one of the ultimate goals of microrobotics. Whilst the current designs are restricted to non-reciprocal actuations, Qiu et al . report swimming via simple reciprocal motion by exploiting the non-Newtonian rheology of viscous fluids. Nature Communications doi: 10.1038/ncomms6119 Authors: Tian Qiu, Tung-Chun Lee, Andrew G. Mark, Konstantin I. Morozov, Raphael Münster, Otto Mierka, Stefan Turek, Alexander M. Leshansky, Peer Fischer

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CD95 and CD95L promote and protect cancer stem cells (2014)

Paolo Ceppi; Abbas Hadji; Frederick J. Kohlhapp; Abhinandan Pattanayak; Annika Hau; Xia Liu; Huiping Liu; Andrea E. Murmann; Marcus E. Peter

Springer Nature

In: Nature Communications

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Beschreibung: Article The death receptor CD95/Fas induces apoptosis of many normal cells but prevents necrotic death of cancer cells. Here the authors demonstrate that CD95 activation promotes a cancer stem cell (CSC) phenotype, and that CSCs but not differentiated cancer cells are resistant to CD95-mediated apoptosis and depend on CD95 signalling to prevent necrosis. Nature Communications doi: 10.1038/ncomms6238 Authors: Paolo Ceppi, Abbas Hadji, Frederick J. Kohlhapp, Abhinandan Pattanayak, Annika Hau, Xia Liu, Huiping Liu, Andrea E. Murmann, Marcus E. Peter

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Exact non-Markovian master equations for multiple qubit systems: Quantum-trajectory approach (2014)

Yusui Chen, J. Q. You, and Ting Yu

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Yusui Chen, J. Q. You, and Ting Yu A wide class of exact master equations for a multiple qubit system can be explicitly constructed by using the corresponding exact non-Markovian quantum-state diffusion equations. These exact master equations arise naturally from the quantum decoherence dynamics of qubit system as a quantum memory co... [Phys. Rev. A 90, 052104] Published Wed Nov 05, 2014

Schlagwort(e): Fundamental concepts

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PAR-CLIP analysis uncovers AUF1 impact on target RNA fate and genome integrity (2014)

Je-Hyun Yoon; Supriyo De; Subramanya Srikantan; Kotb Abdelmohsen; Ioannis Grammatikakis; Jiyoung Kim; Kyoung Mi Kim; Ji Heon Noh; Elizabeth J. F. White; Jennifer L. Martindale; Xiaoling Yang; Min-Ju Kang; William H. Wood 3rd; Nicole Noren Hooten; Michele K. Evans; Kevin G. Becker; Vidisha Tripathi; Kannanganattu V. Prasanth; Gerald M. Wilson; Thomas Tuschl; Nicholas T. Ingolia; Markus Hafner; Myriam Gorospe

Springer Nature

In: Nature Communications

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Beschreibung: Article AUF1 is an RNA-binding protein believed to function mostly by regulating the decay of its target transcripts. Here, Yoon et al. systematically identify the targets of AUF1 and provide insights into how AUF1 functions to regulate various cellular processes by enhancing the decay, stability or translation of specific RNAs. Nature Communications doi: 10.1038/ncomms6248 Authors: Je-Hyun Yoon, Supriyo De, Subramanya Srikantan, Kotb Abdelmohsen, Ioannis Grammatikakis, Jiyoung Kim, Kyoung Mi Kim, Ji Heon Noh, Elizabeth J. F. White, Jennifer L. Martindale, Xiaoling Yang, Min-Ju Kang, William H. Wood 3rd, Nicole Noren Hooten, Michele K. Evans, Kevin G. Becker, Vidisha Tripathi, Kannanganattu V. Prasanth, Gerald M. Wilson, Thomas Tuschl, Nicholas T. Ingolia, Markus Hafner, Myriam Gorospe

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Observation of Dicke superradiance for two artificial atoms in a cavity with high decay rate (2014)

J. A. Mlynek; A. A. Abdumalikov; C. Eichler; A. Wallraff

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-11-06

Beschreibung: Article Individual emitters of light in close proximity, such as atoms, can couple together via the light they create leading to a concentrated burst of radiation. Here Mlynek et al. experminetally explore the fundamental origin of this superradiance by studying two superconducting qubits coupled to a microwave cavity. Nature Communications doi: 10.1038/ncomms6186 Authors: J. A. Mlynek, A. A. Abdumalikov, C. Eichler, A. Wallraff

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The quantum nature of skyrmions and half-skyrmions in Cu2OSeO3 (2014)

Oleg Janson; Ioannis Rousochatzakis; Alexander A. Tsirlin; Marilena Belesi; Andrei A. Leonov; Ulrich K. Rößler; Jeroen van den Brink; Helge Rosner

Springer Nature

In: Nature Communications

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Beschreibung: Article In chiral helimagnets, the Dzyaloshinskii–Moriya interaction is known to stabilize skyrmions, but the microscopic roots remain enigmatic. Here, Janson et al. apply a multi-scale approach to Cu 2 OSeO 3 and show that its skyrmions can be traced back to magnetic tetrahedra of a quantum nature. Nature Communications doi: 10.1038/ncomms6376 Authors: Oleg Janson, Ioannis Rousochatzakis, Alexander A. Tsirlin, Marilena Belesi, Andrei A. Leonov, Ulrich K. Rößler, Jeroen van den Brink, Helge Rosner

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Cold magnetically trapped 2Dg scandium atoms. II. Scattering dynamics (2014)

Tijs Karman and Gerrit C. Groenenboom

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-06

Beschreibung: Author(s): Tijs Karman and Gerrit C. Groenenboom The binary collision dynamics of 2Dg,3/2 ground state scandium atoms is studied from first principles. We employ 30 coupled diabatic ab initio potentials in a coupled-channels study of the scattering dynamics of cold and ultracold scandium atoms in external magnetic fields. Due to the long-ranged ma... [Phys. Rev. A 90, 052702] Published Wed Nov 05, 2014

Schlagwort(e): Atomic and molecular collisions and interactions

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Condensation phenomena in plasmonics (2014)

J.-P. Martikainen, M. O. J. Heikkinen, and P. Törmä

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-06

Beschreibung: Author(s): J.-P. Martikainen, M. O. J. Heikkinen, and P. Törmä We study arrays of plasmonic nanoparticles combined with quantum emitters, quantum plasmonic lattices, as a platform for room-temperature studies of quantum many-body physics. We outline a theory to describe surface plasmon-polariton distributions when they are coupled to externally pumped molecules... [Phys. Rev. A 90, 053604] Published Wed Nov 05, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Optomechanical Ramsey interferometry (2014)

Kenan Qu, Chunhua Dong, Hailin Wang, and G. S. Agarwal

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-06

Beschreibung: Author(s): Kenan Qu, Chunhua Dong, Hailin Wang, and G. S. Agarwal We adopt Ramsey's method of separated oscillatory fields to study coherences of the mechanical system in an optomechanical resonator. The high-resolution Ramsey fringes are observed in the emission optical field, when two pulses separated in time are applied. We develop a theory to describe the tran... [Phys. Rev. A 90, 053809] Published Wed Nov 05, 2014

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Cold atomic media with ultrahigh optical depths (2014)

Ya-Fen Hsiao, Hung-Shiue Chen, Pin-Ju Tsai, and Ying-Cheng Chen

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-06

Beschreibung: Author(s): Ya-Fen Hsiao, Hung-Shiue Chen, Pin-Ju Tsai, and Ying-Cheng Chen We present an experimental study to achieve ultrahigh optical depths for cold atomic media with a two-dimensional magneto-optical trap (MOT) of cesium. By combining large atom number, a temporally dark and compressed MOT, and Zeeman-state optical pumping, we achieve an optical depth of up to 1306 fo... [Phys. Rev. A 90, 055401] Published Wed Nov 05, 2014

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Oncogenic Kit signals on endolysosomes and endoplasmic reticulum are essential for neoplastic mast cell proliferation (2014)

Yuuki Obata; Shota Toyoshima; Ei Wakamatsu; Shunichi Suzuki; Shuhei Ogawa; Hiroyasu Esumi; Ryo Abe

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-12

Beschreibung: Article Activating mutations of the tyrosine kinase Kit are commonly found in mast cell neoplasms and gastrointestinal stromal tumours. Here the authors show that mutant Kit, through the activation of PI3K and STAT3 pathways, elicits proliferative and survival signals from endolysosomes and from the endoplasmic reticulum. Nature Communications doi: 10.1038/ncomms6715 Authors: Yuuki Obata, Shota Toyoshima, Ei Wakamatsu, Shunichi Suzuki, Shuhei Ogawa, Hiroyasu Esumi, Ryo Abe

Digitale ISSN: 2041-1723

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

Publiziert von Springer Nature

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Atomic-scale structure and properties of highly stable antiphase boundary defects in Fe3O4 (2014)

Keith P. McKenna; Florian Hofer; Daniel Gilks; Vlado K. Lazarov; Chunlin Chen; Zhongchang Wang; Yuichi Ikuhara

Springer Nature

In: Nature Communications

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Publikationsdatum: 2014-12-12

Beschreibung: Article Although Fe 3 O 4 is widely investigated for a variety of applications, the relation between some defects and its properties remains poorly understood. Here, the authors use high-resolution transmission electron microscopy and simulations to determine the atomic structure of the common antiphase boundary defects. Nature Communications doi: 10.1038/ncomms6740 Authors: Keith P. McKenna, Florian Hofer, Daniel Gilks, Vlado K. Lazarov, Chunlin Chen, Zhongchang Wang, Yuichi Ikuhara

Digitale ISSN: 2041-1723

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

Publiziert von Springer Nature

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