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  • 1
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    Nature of charge density waves and superconductivity in 1T−TaSe_{2−x} Te_{x} (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-07-22
    Description: Author(s): Y. Liu (刘育), D. F. Shao (邵定夫), L. J. Li, W. J. Lu, X. D. Zhu, P. Tong, R. C. Xiao, L. S. Ling, C. Y. Xi, L. Pi, H. F. Tian, H. X. Yang, J. Q. Li, W. H. Song, X. B. Zhu, and Y. P. Sun Transition-metal dichalcogenides (TMDs) M X 2 ( M = Ti , Nb , Ta ; X = S , Se , Te ) exhibit a rich set of charge density wave (CDW) orders, which usually coexist and/or compete with superconductivity. The mechanisms of CDWs and superconductivity in TMDs are still under debate. Here we perform an investigation on a t… [Phys. Rev. B 94, 045131] Published Thu Jul 21, 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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    DNF4 is NCR211 [Plant Biology] (2015)
    National Academy of Sciences
    Details
    Publication Date: 2015-12-09
    Description: In the nitrogen-fixing symbiosis between legume hosts and rhizobia, the bacteria are engulfed by a plant cell membrane to become intracellular organelles. In the model legume Medicago truncatula, internalization and differentiation of Sinorhizobium (also known as Ensifer) meliloti is a prerequisite for nitrogen fixation. The host mechanisms that ensure the...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 3
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    Lsh, chromatin remodeling family member, modulates genome-wide cytosine methylation patterns at nonrepeat sequences [Cell Biology] (2011)
    National Academy of Sciences
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    Publication Date: 2011-04-06
    Description: DNA methylation is critical for normal development and plays important roles in genome organization and transcriptional regulation. Although DNA methyltransferases have been identified, the factors that establish and contribute to genome-wide methylation patterns remain elusive. Here, we report a high-resolution cytosine methylation map of the murine genome modulated by Lsh, a chromatin remodeling family member that has previously been shown to regulate CpG methylation at repetitive sequences. We provide evidence that Lsh also controls genome-wide cytosine methylation at nonrepeat sequences and relate those changes to alterations in H4K4me3 modification and gene expression. Deletion of Lsh alters the allocation of cytosine methylation in chromosomal regions of 50 kb to 2 Mb and, in addition, leads to changes in the methylation profile at the 5′ end of genes. Furthermore, we demonstrate that loss of Lsh promotes—as well as prevents—cytosine methylation. Our data indicate that Lsh is an epigenetic modulator that is critical for normal distribution of cytosine methylation throughout the murine genome.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 4
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    Generation and acceleration of electron bunches from a plasma photocathode (2019)
    Springer Nature
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    Publication Date: 2019
    Print ISSN: 1745-2473
    Electronic ISSN: 1745-2481
    Topics: Physics
    Published by Springer Nature
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  • 5
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    Distributed H{infty}-consensus filtering with sensor networks: a finite horizon solution (2014)
    Oxford University Press
    Details
    Publication Date: 2014-03-18
    Description: The distributed H -consensus filtering problem is investigated for a class of discrete time-varying non-linear systems on a finite horizon. The topology of the sensor networks is assumed to be Markovian switching and the missing measurements (packet dropouts) problem is also considered. Based on the recursive linear matrix inequalities, an effective distributed H -consensus filter is designed, which is suitable for online computation. A numerical example is given to verify the effectiveness of the obtained results.
    Print ISSN: 0265-0754
    Electronic ISSN: 1471-6887
    Topics: Mathematics
    Published by Oxford University Press
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  • 6
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    Planar Hall effect in the type-II Weyl semimetal ${T}_{d}\text{−}\mathrm{MoT}{\mathrm{e}}_{2}$ (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-07-31
    Description: Author(s): F. C. Chen, X. Luo, J. Yan, Y. Sun, H. Y. Lv, W. J. Lu, C. Y. Xi, P. Tong, Z. G. Sheng, X. B. Zhu, W. H. Song, and Y. P. Sun Topological Weyl semimetals (WSMs), a new quantum state of matter, provide the realization of relativistic Weyl fermions in solid-state physics. The appearance of the Weyl nodes will demonstrate novel transport phenomena related to the chiral anomaly. Theoretical prediction hints that the giant plan... [Phys. Rev. B 98, 041114(R)] Published Mon Jul 30, 2018
    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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  • 7
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    Lineage-negative progenitors mobilize to regenerate lung epithelium after major injury (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-12-24
    Description: Broadly, tissue regeneration is achieved in two ways: by proliferation of common differentiated cells and/or by deployment of specialized stem/progenitor cells. Which of these pathways applies is both organ- and injury-specific. Current models in the lung posit that epithelial repair can be attributed to cells expressing mature lineage markers. By contrast, here we define the regenerative role of previously uncharacterized, rare lineage-negative epithelial stem/progenitor (LNEP) cells present within normal distal lung. Quiescent LNEPs activate a DeltaNp63 (a p63 splice variant) and cytokeratin 5 remodelling program after influenza or bleomycin injury in mice. Activated cells proliferate and migrate widely to occupy heavily injured areas depleted of mature lineages, at which point they differentiate towards mature epithelium. Lineage tracing revealed scant contribution of pre-existing mature epithelial cells in such repair, whereas orthotopic transplantation of LNEPs, isolated by a definitive surface profile identified through single-cell sequencing, directly demonstrated the proliferative capacity and multipotency of this population. LNEPs require Notch signalling to activate the DeltaNp63 and cytokeratin 5 program, and subsequent Notch blockade promotes an alveolar cell fate. Persistent Notch signalling after injury led to parenchymal 'micro-honeycombing' (alveolar cysts), indicative of failed regeneration. Lungs from patients with fibrosis show analogous honeycomb cysts with evidence of hyperactive Notch signalling. Our findings indicate that distinct stem/progenitor cell pools repopulate injured tissue depending on the extent of the injury, and the outcomes of regeneration or fibrosis may depend in part on the dynamics of LNEP Notch signalling.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4312207/" 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/PMC4312207/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vaughan, Andrew E -- Brumwell, Alexis N -- Xi, Ying -- Gotts, Jeffrey E -- Brownfield, Doug G -- Treutlein, Barbara -- Tan, Kevin -- Tan, Victor -- Liu, Feng Chun -- Looney, Mark R -- Matthay, Michael A -- Rock, Jason R -- Chapman, Harold A -- F32 HL117600-01/HL/NHLBI NIH HHS/ -- R01 HL44712/HL/NHLBI NIH HHS/ -- U01 HL099995/HL/NHLBI NIH HHS/ -- U01 HL099999/HL/NHLBI NIH HHS/ -- U01 HL111054/HL/NHLBI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Jan 29;517(7536):621-5. doi: 10.1038/nature14112. Epub 2014 Dec 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Cardiovascular Research Institute, University of California, San Francisco (UCSF), San Francisco, California 94143, USA. ; Department of Biochemistry, Stanford University School of Medicine and Howard Hughes Medical Institute, Stanford, California 94305, USA. ; Max Planck Institute for Evolutionary Anthropology, Department of Evolutionary Genetics, Deutscher Platz 6, 04103 Leipzig, Germany. ; Department of Anatomy, School of Medicine, University of California, San Francisco (UCSF), San Francisco, California 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25533958" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bleomycin ; Cell Lineage ; Cell Proliferation ; Cell Separation ; Cysts/metabolism/pathology ; Epithelial Cells/*cytology/metabolism/*pathology ; Female ; Humans ; Keratin-5/metabolism ; Lung/*cytology/*pathology/physiology ; Lung Injury/chemically induced/*pathology/virology ; Male ; Mice ; Orthomyxoviridae Infections/pathology/virology ; Phosphoproteins/genetics/metabolism ; *Re-Epithelialization ; Receptors, Notch/metabolism ; Signal Transduction ; Stem Cell Transplantation ; Stem Cells/*cytology/metabolism ; Trans-Activators/genetics/metabolism
    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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    A draft sequence for the genome of the domesticated silkworm (Bombyx mori) (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-14
    Description: We report a draft sequence for the genome of the domesticated silkworm (Bombyx mori), covering 90.9% of all known silkworm genes. Our estimated gene count is 18,510, which exceeds the 13,379 genes reported for Drosophila melanogaster. Comparative analyses to fruitfly, mosquito, spider, and butterfly reveal both similarities and differences in gene content.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xia, Qingyou -- Zhou, Zeyang -- Lu, Cheng -- Cheng, Daojun -- Dai, Fangyin -- Li, Bin -- Zhao, Ping -- Zha, Xingfu -- Cheng, Tingcai -- Chai, Chunli -- Pan, Guoqing -- Xu, Jinshan -- Liu, Chun -- Lin, Ying -- Qian, Jifeng -- Hou, Yong -- Wu, Zhengli -- Li, Guanrong -- Pan, Minhui -- Li, Chunfeng -- Shen, Yihong -- Lan, Xiqian -- Yuan, Lianwei -- Li, Tian -- Xu, Hanfu -- Yang, Guangwei -- Wan, Yongji -- Zhu, Yong -- Yu, Maode -- Shen, Weide -- Wu, Dayang -- Xiang, Zhonghuai -- Yu, Jun -- Wang, Jun -- Li, Ruiqiang -- Shi, Jianping -- Li, Heng -- Li, Guangyuan -- Su, Jianning -- Wang, Xiaoling -- Li, Guoqing -- Zhang, Zengjin -- Wu, Qingfa -- Li, Jun -- Zhang, Qingpeng -- Wei, Ning -- Xu, Jianzhe -- Sun, Haibo -- Dong, Le -- Liu, Dongyuan -- Zhao, Shengli -- Zhao, Xiaolan -- Meng, Qingshun -- Lan, Fengdi -- Huang, Xiangang -- Li, Yuanzhe -- Fang, Lin -- Li, Changfeng -- Li, Dawei -- Sun, Yongqiao -- Zhang, Zhenpeng -- Yang, Zheng -- Huang, Yanqing -- Xi, Yan -- Qi, Qiuhui -- He, Dandan -- Huang, Haiyan -- Zhang, Xiaowei -- Wang, Zhiqiang -- Li, Wenjie -- Cao, Yuzhu -- Yu, Yingpu -- Yu, Hong -- Li, Jinhong -- Ye, Jiehua -- Chen, Huan -- Zhou, Yan -- Liu, Bin -- Wang, Jing -- Ye, Jia -- Ji, Hai -- Li, Shengting -- Ni, Peixiang -- Zhang, Jianguo -- Zhang, Yong -- Zheng, Hongkun -- Mao, Bingyu -- Wang, Wen -- Ye, Chen -- Li, Songgang -- Wang, Jian -- Wong, Gane Ka-Shu -- Yang, Huanming -- Biology Analysis Group -- 1 P50 HG02351/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2004 Dec 10;306(5703):1937-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Southwest Agricultural University, Chongqing Beibei, 400716, China. xiaqy@swau.cq.cn〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15591204" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; Anopheles/genetics ; Body Patterning/genetics ; Bombyx/*genetics/growth & development/metabolism ; Butterflies/genetics ; Computational Biology ; DNA Transposable Elements ; Drosophila melanogaster/genetics ; Exocrine Glands/metabolism ; Expressed Sequence Tags ; Female ; Genes, Homeobox ; *Genes, Insect ; *Genome ; Immunity, Innate/genetics ; Insect Hormones/genetics ; Insect Proteins/genetics ; Male ; Molecular Sequence Data ; *Sequence Analysis, DNA ; Sequence Homology, Nucleic Acid ; Sex Determination Processes ; Spiders/genetics ; Wings, Animal/growth & development
    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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  • 9
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    Design of Analog Front-end Circuit For Audio-frequency Magnetotelluric Instrument (2018)
    Environmental & Engineering Geophysical Society (EEGS)
    Details
    Publication Date: 2018
    Description: 〈span〉〈div〉ABSTRACT〈/div〉High-performance audio-frequency magnetotelluric (AMT) instrument is one means of obtaining high-quality electromagnetic (EM) data. To improve the ability of AMT system to obtain high-quality data, this paper presents a design for a high-performance analog front-end circuit for AMT instrument. It mainly consists of the input protection, preamplifier, passive high pass filter, power frequency notch filter, programmable amplifier, and active low pass filter. In addition, this paper proposes a design of low-noise, high-performance preamplifier, which improves the common-mode rejection ratio (CMRR) of analog front-end circuit and effectively enhances the signal-to-noise ratio (SNR) of the circuit. The front-end circuit utilized two-stage twin-T notch filter to effectively suppress the strong interference of fundamental component of power frequency. Also, it used signal relays to control circuit gain and selection of cutoff frequency of anti-aliasing filter, resulting in the improvement of the capability of the analog-to-digital Converter (ADC) to distinguish weak EM signal.The measured results of the electric field and magnetic field channel showed that: 1) The circuit works in frequency range of 1 Hz∼100 kHz; 2) The CMRR values of the preamplifier of electric field channel at low frequencies (1 Hz∼1 kHz) are 111 dB and 97 dB when the gains are 20 dB and 6 dB respectively; 3) The maximum attenuation fundamental power frequency can reach −39.46 dB and −39.04 dB respectively; 4) The total harmonic distortion rate at 1 kHz is 0.022% and 0.029% respectively; 5) The input noise levels of electric field channel are 12.67nV / @10Hz and 8.15V / @1kHz, while the input noise levels of magnetic field channel are 8.97nV / @10Hz and 6.16V / @1kHz; and 6) In conclusion, the analog front-end circuit is superior to meet the requirements of the AMT methods, and provides a useful reference for the development of AMT instrument. 〈/span〉
    Print ISSN: 1083-1363
    Electronic ISSN: 1943-2658
    Topics: Geosciences
    Published by Environmental & Engineering Geophysical Society (EEGS)
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  • 10
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    Knockout of Atg5 delays the maturation and reduces the survival of adult-generated neurons in the hippocampus (2016)
    Springer Nature
    Details
    Publication Date: 2016-03-04
    Description: Knockout of Atg5 delays the maturation and reduces the survival of adult-generated neurons in the hippocampus Cell Death and Disease 7, e2127 (March 2016). doi:10.1038/cddis.2015.406 Authors: Y Xi, J S Dhaliwal, M Ceizar, M Vaculik, K L Kumar & D C Lagace
    Electronic ISSN: 2041-4889
    Topics: Biology , Medicine
    Published by Springer Nature
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