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  • 1
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    Synthesis and characterization of Fe-Ti-Sb intermetallic compounds: Discovery of a new Slater-Pauling phase (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-03-30
    Description: Author(s): N. Naghibolashrafi, S. Keshavarz, Vinay I. Hegde, A. Gupta, W. H. Butler, J. Romero, K. Munira, P. LeClair, D. Mazumdar, J. Ma, A. W. Ghosh, and C. Wolverton Compounds of Fe, Ti, and Sb were prepared using arc melting and vacuum annealing. Fe 2 TiSb , expected to be a full Heusler compound crystallizing in the L 2 1 structure, was shown by XRD and SEM analyses to be composed of weakly magnetic grains of nominal composition Fe 1.5 TiSb with iron-rich precipitate… [Phys. Rev. B 93, 104424] Published Tue Mar 29, 2016
    Keywords: Magnetism
    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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    Effect of Bloch wave electron propagation and momentum-resolved signal detection on the quantitative and site-specific electron magnetic chiral dichroism of magnetic spinel oxide thin films (2015)
    American Physical Society (APS)
    Details
    Publication Date: 2015-04-11
    Description: Author(s): B. Loukya, D. S. Negi, K. Dileep, N. Pachauri, A. Gupta, and R. Datta Electron magnetic chiral dichroism (EMCD) in a transmission electron microscope is an element-specific magnetic characterization technique and is extremely powerful for understanding magnetism of materials at the nanoscale. However, quantitative EMCD remains a challenge. In the present paper, we hav... [Phys. Rev. B 91, 134412] Published Fri Apr 10, 2015
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Electronic and magnetic structure of CrO_{2}-RuO_{2} interfaces (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-08-12
    Description: Author(s): K. B. Chetry, H. Sims, W. H. Butler, and A. Gupta CrO 2 and RuO 2 share the same (rutile) crystal structure and have similar lattice constants. We have used density functional theory (DFT) within the generalized gradient approximation (GGA) to calculate the electronic and magnetic structure of CrO 2 , RuO 2 , and their interfaces. We also used DFT-GGA to... [Phys. Rev. B 84, 054438] Published Thu Aug 11, 2011
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Field-induced spin reorientation in [Fe/Cr]_{n} multilayers studied by nuclear resonance reflectivity (2015)
    American Physical Society (APS)
    Details
    Publication Date: 2015-10-07
    Description: Author(s): M. Andreeva, A. Gupta, G. Sharma, S. Kamali, K. Okada, and Y. Yoda We present depth-resolved nuclear resonance reflectivity studies of the magnetization evolution in [ Fe 57 ( 3 nm ) / Cr ( 1.2 nm ) ] 10 multilayer under applied external field. The measurements have been performed at the station BL09XU of SPring-8 at different values of the external field (0–1500 Oe). We apply t… [Phys. Rev. B 92, 134403] Published Mon Oct 05, 2015
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
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  • 5
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    Cr magnetization reversal at the CrO_{2}/RuO_{2} interface: Origin of the reduced GMR effect (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-10-13
    Description: Author(s): K. Zafar, P. Audehm, G. Schütz, E. Goering, M. Pathak, K. B. Chetry, P. R. LeClair, and A. Gupta [Phys. Rev. B 84, 134412] Published Wed Oct 12, 2011
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 6
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    Draft genome sequence of the sexually transmitted pathogen Trichomonas vaginalis (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-01-16
    Description: We describe the genome sequence of the protist Trichomonas vaginalis, a sexually transmitted human pathogen. Repeats and transposable elements comprise about two-thirds of the approximately 160-megabase genome, reflecting a recent massive expansion of genetic material. This expansion, in conjunction with the shaping of metabolic pathways that likely transpired through lateral gene transfer from bacteria, and amplification of specific gene families implicated in pathogenesis and phagocytosis of host proteins may exemplify adaptations of the parasite during its transition to a urogenital environment. The genome sequence predicts previously unknown functions for the hydrogenosome, which support a common evolutionary origin of this unusual organelle with mitochondria.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2080659/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2080659/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carlton, Jane M -- Hirt, Robert P -- Silva, Joana C -- Delcher, Arthur L -- Schatz, Michael -- Zhao, Qi -- Wortman, Jennifer R -- Bidwell, Shelby L -- Alsmark, U Cecilia M -- Besteiro, Sebastien -- Sicheritz-Ponten, Thomas -- Noel, Christophe J -- Dacks, Joel B -- Foster, Peter G -- Simillion, Cedric -- Van de Peer, Yves -- Miranda-Saavedra, Diego -- Barton, Geoffrey J -- Westrop, Gareth D -- Muller, Sylke -- Dessi, Daniele -- Fiori, Pier Luigi -- Ren, Qinghu -- Paulsen, Ian -- Zhang, Hanbang -- Bastida-Corcuera, Felix D -- Simoes-Barbosa, Augusto -- Brown, Mark T -- Hayes, Richard D -- Mukherjee, Mandira -- Okumura, Cheryl Y -- Schneider, Rachel -- Smith, Alias J -- Vanacova, Stepanka -- Villalvazo, Maria -- Haas, Brian J -- Pertea, Mihaela -- Feldblyum, Tamara V -- Utterback, Terry R -- Shu, Chung-Li -- Osoegawa, Kazutoyo -- de Jong, Pieter J -- Hrdy, Ivan -- Horvathova, Lenka -- Zubacova, Zuzana -- Dolezal, Pavel -- Malik, Shehre-Banoo -- Logsdon, John M Jr -- Henze, Katrin -- Gupta, Arti -- Wang, Ching C -- Dunne, Rebecca L -- Upcroft, Jacqueline A -- Upcroft, Peter -- White, Owen -- Salzberg, Steven L -- Tang, Petrus -- Chiu, Cheng-Hsun -- Lee, Ying-Shiung -- Embley, T Martin -- Coombs, Graham H -- Mottram, Jeremy C -- Tachezy, Jan -- Fraser-Liggett, Claire M -- Johnson, Patricia J -- 072031/Wellcome Trust/United Kingdom -- G0000508/Medical Research Council/United Kingdom -- G0000508(56841)/Medical Research Council/United Kingdom -- G9722968/Medical Research Council/United Kingdom -- G9722968(65078)/Medical Research Council/United Kingdom -- R01 LM006845/LM/NLM NIH HHS/ -- R01 LM006845-08/LM/NLM NIH HHS/ -- R01 LM007938/LM/NLM NIH HHS/ -- R01 LM007938-04/LM/NLM NIH HHS/ -- U01 AI050913/AI/NIAID NIH HHS/ -- U01 AI050913-01A1/AI/NIAID NIH HHS/ -- U01 AI050913-02/AI/NIAID NIH HHS/ -- UO1 AI50913-01/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2007 Jan 12;315(5809):207-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Genomic Research, 9712 Medical Research Drive, Rockville, MD 20850, USA. jane.carlton@med.nyu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17218520" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport/genetics ; DNA Transposable Elements ; DNA, Protozoan/genetics ; Gene Transfer, Horizontal ; Genes, Protozoan ; *Genome, Protozoan ; Humans ; Hydrogen/metabolism ; Metabolic Networks and Pathways/genetics ; Molecular Sequence Data ; Multigene Family ; Organelles/metabolism ; Oxidative Stress/genetics ; Peptide Hydrolases/genetics/metabolism ; Protozoan Proteins/genetics/physiology ; RNA Processing, Post-Transcriptional ; Repetitive Sequences, Nucleic Acid ; *Sequence Analysis, DNA ; Sexually Transmitted Diseases/parasitology ; Trichomonas Infections/parasitology/transmission ; Trichomonas vaginalis/cytology/*genetics/metabolism/pathogenicity
    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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  • 7
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    A long noncoding RNA maintains active chromatin to coordinate homeotic gene expression (2011)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2011-03-23
    Description: The genome is extensively transcribed into long intergenic noncoding RNAs (lincRNAs), many of which are implicated in gene silencing. Potential roles of lincRNAs in gene activation are much less understood. Development and homeostasis require coordinate regulation of neighbouring genes through a process termed locus control. Some locus control elements and enhancers transcribe lincRNAs, hinting at possible roles in long-range control. In vertebrates, 39 Hox genes, encoding homeodomain transcription factors critical for positional identity, are clustered in four chromosomal loci; the Hox genes are expressed in nested anterior-posterior and proximal-distal patterns colinear with their genomic position from 3' to 5'of the cluster. Here we identify HOTTIP, a lincRNA transcribed from the 5' tip of the HOXA locus that coordinates the activation of several 5' HOXA genes in vivo. Chromosomal looping brings HOTTIP into close proximity to its target genes. HOTTIP RNA binds the adaptor protein WDR5 directly and targets WDR5/MLL complexes across HOXA, driving histone H3 lysine 4 trimethylation and gene transcription. Induced proximity is necessary and sufficient for HOTTIP RNA activation of its target genes. Thus, by serving as key intermediates that transmit information from higher order chromosomal looping into chromatin modifications, lincRNAs may organize chromatin domains to coordinate long-range gene activation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3670758/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3670758/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Kevin C -- Yang, Yul W -- Liu, Bo -- Sanyal, Amartya -- Corces-Zimmerman, Ryan -- Chen, Yong -- Lajoie, Bryan R -- Protacio, Angeline -- Flynn, Ryan A -- Gupta, Rajnish A -- Wysocka, Joanna -- Lei, Ming -- Dekker, Job -- Helms, Jill A -- Chang, Howard Y -- HG003143/HG/NHGRI NIH HHS/ -- R01 HG003143/HG/NHGRI NIH HHS/ -- R01 HG003143-06/HG/NHGRI NIH HHS/ -- R01 HG003143-06S1/HG/NHGRI NIH HHS/ -- R01 HG003143-06S2/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2011 Apr 7;472(7341):120-4. doi: 10.1038/nature09819. Epub 2011 Mar 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Program in Epithelial Biology, Stanford University School of Medicine, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21423168" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cells, Cultured ; Chromatin/*genetics/metabolism ; DNA, Intergenic/genetics ; Embryo, Mammalian/metabolism ; Fibroblasts/metabolism ; Gene Expression Regulation, Developmental/*genetics ; Gene Knockdown Techniques ; Genes, Homeobox/*genetics ; Histone-Lysine N-Methyltransferase/metabolism ; Histones/chemistry/metabolism ; Humans ; Lysine/metabolism ; Methylation ; Mice ; Molecular Sequence Data ; Multigene Family/genetics ; Organ Specificity ; RNA, Untranslated/*genetics ; Transcription, Genetic
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 8
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    Magnetic field tunability of spin-polarized excitations in a high-temperature magnet (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-09-23
    Description: Author(s): B. S. Holinsworth, H. Sims, J. G. Cherian, D. Mazumdar, N. C. Harms, B. C. L. Chapman, A. Gupta, S. A. McGill, and J. L. Musfeldt We bring together magnetic circular dichroism, photoconductivity, and complementary first-principles calculations in order to unravel spin-charge interactions in the high Curie temperature magnet NiFe 2 O 4 . Analysis uncovers a massive set of well-isolated spin-down states, a metamagnetic transition in... [Phys. Rev. B 96, 094427] Published Thu Sep 21, 2017
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
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  • 9
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    Long non-coding RNA HOTAIR reprograms chromatin state to promote cancer metastasis (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-04-16
    Description: Large intervening non-coding RNAs (lincRNAs) are pervasively transcribed in the genome yet their potential involvement in human disease is not well understood. Recent studies of dosage compensation, imprinting, and homeotic gene expression suggest that individual lincRNAs can function as the interface between DNA and specific chromatin remodelling activities. Here we show that lincRNAs in the HOX loci become systematically dysregulated during breast cancer progression. The lincRNA termed HOTAIR is increased in expression in primary breast tumours and metastases, and HOTAIR expression level in primary tumours is a powerful predictor of eventual metastasis and death. Enforced expression of HOTAIR in epithelial cancer cells induced genome-wide re-targeting of Polycomb repressive complex 2 (PRC2) to an occupancy pattern more resembling embryonic fibroblasts, leading to altered histone H3 lysine 27 methylation, gene expression, and increased cancer invasiveness and metastasis in a manner dependent on PRC2. Conversely, loss of HOTAIR can inhibit cancer invasiveness, particularly in cells that possess excessive PRC2 activity. These findings indicate that lincRNAs have active roles in modulating the cancer epigenome and may be important targets for cancer diagnosis and therapy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3049919/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3049919/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gupta, Rajnish A -- Shah, Nilay -- Wang, Kevin C -- Kim, Jeewon -- Horlings, Hugo M -- Wong, David J -- Tsai, Miao-Chih -- Hung, Tiffany -- Argani, Pedram -- Rinn, John L -- Wang, Yulei -- Brzoska, Pius -- Kong, Benjamin -- Li, Rui -- West, Robert B -- van de Vijver, Marc J -- Sukumar, Saraswati -- Chang, Howard Y -- R01 CA118750/CA/NCI NIH HHS/ -- R01 CA118750-03/CA/NCI NIH HHS/ -- R01 HG004361/HG/NHGRI NIH HHS/ -- R01 HG004361-03/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Apr 15;464(7291):1071-6. doi: 10.1038/nature08975.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Program in Epithelial Biology, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20393566" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breast Neoplasms/genetics/pathology ; Cell Line, Tumor ; Cell Proliferation ; Chromatin/*genetics ; Chromatin Assembly and Disassembly/*genetics ; Disease Progression ; Epigenesis, Genetic ; Female ; Gene Expression Regulation, Neoplastic ; Genes, Homeobox/genetics ; Genome, Human/genetics ; Histones/metabolism ; Humans ; Methylation ; Mice ; Mice, Nude ; Mice, SCID ; Middle Aged ; Neoplasm Invasiveness ; Neoplasm Metastasis/*genetics ; Neoplasm Transplantation ; Polycomb-Group Proteins ; Prognosis ; RNA Interference ; RNA, Untranslated/biosynthesis/*genetics ; Repressor Proteins/analysis/metabolism ; Survival Rate
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 10
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    Thermally driven spin and charge currents in thin NiFe_{2}O_{4}/Pt films (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-02-20
    Description: Author(s): D. Meier, T. Kuschel, L. Shen, A. Gupta, T. Kikkawa, K. Uchida, E. Saitoh, J.-M. Schmalhorst, and G. Reiss We present results on the longitudinal spin Seebeck effect (LSSE) shown by semiconducting ferrimagnetic NiFe 2 O 4 /Pt films from room temperature down to 50 K base temperature. The temperature dependence of the conductivity has been studied in parallel to obtain information about the origin of the elec... [Phys. Rev. B 87, 054421] Published Tue Feb 19, 2013
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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