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  • 1
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    On the combined use of GW approximation and cumulant expansion in the calculations of quasiparticle spectra: The paradigm of Si valence bands (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-07-06
    Description: Author(s): Branko Gumhalter, Vjekoslav Kovač, Fabio Caruso, Henry Lambert, and Feliciano Giustino Since the earliest implementations of the various GW approximations and cumulant expansion in the calculations of quasiparticle propagators and spectra, several attempts have been made to combine the advantageous properties and results of these two theoretical approaches. While the GW-plus-cumulant … [Phys. Rev. B 94, 035103] Published Tue Jul 05, 2016
    Keywords: Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Regenerative proliferation in inner ear sensory epithelia from adult guinea pigs and humans (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-12
    Description: Supporting cells in the vestibular sensory epithelia from the ears of mature guinea pigs and adult humans proliferate in vitro after treatments with aminoglycoside antibiotics that cause sensory hair cells to die. After 4 weeks in culture, the epithelia contained new cells with some characteristics of immature hair cells. These findings are in contrast to expectations based on previous studies, which had suggested that hair cell loss is irreversible in mammals. The loss of hair cells is responsible for hearing and balance deficits that affect millions of people.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Warchol, M E -- Lambert, P R -- Goldstein, B J -- Forge, A -- Corwin, J T -- New York, N.Y. -- Science. 1993 Mar 12;259(5101):1619-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Otolaryngology-Head and Neck Surgery, University of Virginia School of Medicine, Charlottesville 22908.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8456285" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aging/physiology ; Animals ; Autoradiography ; Bromodeoxyuridine ; Cell Division/drug effects ; Cells, Cultured/drug effects ; DNA Replication ; Epithelial Cells ; Epithelium/physiology ; Gentamicins/pharmacology ; Guinea Pigs ; Hair Cells, Auditory/*cytology/drug effects/*physiology ; Humans ; Neomycin/pharmacology ; Regeneration ; Saccule and Utricle/cytology/*physiology ; Thymidine/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Isolation of the cyclosporin-sensitive T cell transcription factor NFATp (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-29
    Description: Nuclear factor of activated T cells (NFAT) is a transcription factor that regulates expression of the cytokine interleukin-2 (IL-2) in activated T cells. The DNA-binding specificity of NFAT is conferred by NFATp, a phosphoprotein that is a target for the immunosuppressive compounds cyclosporin A and FK506. Here, the purification of NFATp from murine T cells and the isolation of a complementary DNA clone encoding NFATp are reported. A truncated form of NFATp, expressed as a recombinant protein in bacteria, binds specifically to the NFAT site of the murine IL-2 promoter and forms a transcriptionally active complex with recombinant protein fragment react with T cell NFATp. The molecular cloning of NFATp should allow detailed analysis of a T cell transcription factor that is central to initiation of the immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCaffrey, P G -- Luo, C -- Kerppola, T K -- Jain, J -- Badalian, T M -- Ho, A M -- Burgeon, E -- Lane, W S -- Lambert, J N -- Curran, T -- CA42471/CA/NCI NIH HHS/ -- GM46227/GM/NIGMS NIH HHS/ -- NS25078/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1993 Oct 29;262(5134):750-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Tumor Virology, Dana-Farber Cancer Institute, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8235597" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; DNA, Complementary ; DNA-Binding Proteins/genetics/*isolation & purification/physiology ; Immunosuppressive Agents/pharmacology ; Interleukin-2/genetics ; Mice ; Molecular Sequence Data ; NFATC Transcription Factors ; *Nuclear Proteins ; Phosphoproteins/genetics/isolation & purification/physiology ; Promoter Regions, Genetic ; Proto-Oncogene Proteins c-fos/physiology ; Proto-Oncogene Proteins c-jun/physiology ; RNA, Messenger/analysis ; Recombinant Proteins ; T-Lymphocytes/*chemistry ; Transcription Factors/genetics/*isolation & purification/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Neutrophil trails guide influenza-specific CD8(+) T cells in the airways (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-09-05
    Description: During viral infections, chemokines guide activated effector T cells to infection sites. However, the cells responsible for producing these chemokines and how such chemokines recruit T cells are unknown. Here, we show that the early recruitment of neutrophils into influenza-infected trachea is essential for CD8(+) T cell-mediated immune protection in mice. We observed that migrating neutrophils leave behind long-lasting trails that are enriched in the chemokine CXCL12. Experiments with granulocyte-specific CXCL12 conditionally depleted mice and a CXCR4 antagonist revealed that CXCL12 derived from neutrophil trails is critical for virus-specific CD8(+) T cell recruitment and effector functions. Collectively, these results suggest that neutrophils deposit long-lasting, chemokine-containing trails, which may provide both chemotactic and haptotactic cues for efficient CD8(+) T cell migration and localization in influenza-infected tissues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lim, Kihong -- Hyun, Young-Min -- Lambert-Emo, Kris -- Capece, Tara -- Bae, Seyeon -- Miller, Richard -- Topham, David J -- Kim, Minsoo -- AI102851/AI/NIAID NIH HHS/ -- HHSN272201400005C/PHS HHS/ -- HL087088/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2015 Sep 4;349(6252):aaa4352. doi: 10.1126/science.aaa4352.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA. ; Department of Pharmacology, Northwestern University, Chicago, IL, USA. ; Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA. minsoo_kim@urmc.rochester.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26339033" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD8-Positive T-Lymphocytes/*immunology ; Chemokine CXCL12/*immunology/pharmacology ; Chemotaxis/*immunology ; Heterocyclic Compounds/pharmacology ; Influenza A virus/*immunology ; Lung/immunology/virology ; Male ; Matrix Metalloproteinase 2/immunology ; Matrix Metalloproteinase 9/immunology ; Mice ; Mice, Inbred C57BL ; Neutropenia/immunology ; Neutrophils/*immunology/virology ; Orthomyxoviridae Infections/*immunology ; Trachea/*immunology/virology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Quasiparticle interference from different impurities on the surface of pyrochlore iridates: Signatures of the Weyl phase (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-10-20
    Description: Author(s): F. Lambert, A. P. Schnyder, R. Moessner, and I. Eremin Weyl semimetals make up a novel three-dimensional topological phase of matter. Among their most fascinating properties is the existence of a very peculiar type of surface bound state. Contrary to common topological materials, the surface Fermi surface of a Weyl system consists of disconnected arcs – the so-called Fermi arcs – instead of a closed surface. These Fermi arcs connect the projected position of band crossings in their bulk band structure. The Weyl phase typically arises from a symmetry-protected topological insulator upon spontaneously breaking one of the protecting symmetries. In the case of the pyrochlores, the magnetic momenta inside the constituting Ir tetrahedra break time-reversal symmetry, so the pyrochlores are considered magnetic Weyl semimetals. Here, the authors show theoretically that the nontrivial spin polarization of the surface Fermi arcs of a magnetic Weyl semimetal provide characteristic feature observable via spin-resolved scanning tunneling microscopy (STM). They analyze the Fourier transform (FT) of Friedel oscillations in the local density of states occurring due to scattering by localized magnetic and nonmagnetic impurities. They note that the FT features inherit traces of the disconnected nature of the Fermi surface and the spin rotation happening on the Fermi arcs. [Phys. Rev. B 94, 165146] Published Wed Oct 19, 2016
    Keywords: Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
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  • 6
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    Electric current induced ultrafast demagnetization (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-07-08
    Description: Author(s): Richard B. Wilson, Yang Yang, Jon Gorchon, Charles-Henri Lambert, Sayeef Salahuddin, and Jeffrey Bokor We report the magnetic response of Co/Pt multilayers to picosecond electrical heating. Using photoconductive Auston switches, we generate electrical pulses with 5.5 ps duration and hundreds of pico-Joules to pass through Co/Pt multilayers. The electrical pulse heats the electrons in the Co/Pt multil... [Phys. Rev. B 96, 045105] Published Fri Jul 07, 2017
    Keywords: Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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