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  • 1
    Publication Date: 2014-09-12
    Description: Gibbons are small arboreal apes that display an accelerated rate of evolutionary chromosomal rearrangement and occupy a key node in the primate phylogeny between Old World monkeys and great apes. Here we present the assembly and analysis of a northern white-cheeked gibbon (Nomascus leucogenys) genome. We describe the propensity for a gibbon-specific retrotransposon (LAVA) to insert into chromosome segregation genes and alter transcription by providing a premature termination site, suggesting a possible molecular mechanism for the genome plasticity of the gibbon lineage. We further show that the gibbon genera (Nomascus, Hylobates, Hoolock and Symphalangus) experienced a near-instantaneous radiation approximately 5 million years ago, coincident with major geographical changes in southeast Asia that caused cycles of habitat compression and expansion. Finally, we identify signatures of positive selection in genes important for forelimb development (TBX5) and connective tissues (COL1A1) that may have been involved in the adaptation of gibbons to their arboreal habitat.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4249732/" 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/PMC4249732/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carbone, Lucia -- Harris, R Alan -- Gnerre, Sante -- Veeramah, Krishna R -- Lorente-Galdos, Belen -- Huddleston, John -- Meyer, Thomas J -- Herrero, Javier -- Roos, Christian -- Aken, Bronwen -- Anaclerio, Fabio -- Archidiacono, Nicoletta -- Baker, Carl -- Barrell, Daniel -- Batzer, Mark A -- Beal, Kathryn -- Blancher, Antoine -- Bohrson, Craig L -- Brameier, Markus -- Campbell, Michael S -- Capozzi, Oronzo -- Casola, Claudio -- Chiatante, Giorgia -- Cree, Andrew -- Damert, Annette -- de Jong, Pieter J -- Dumas, Laura -- Fernandez-Callejo, Marcos -- Flicek, Paul -- Fuchs, Nina V -- Gut, Ivo -- Gut, Marta -- Hahn, Matthew W -- Hernandez-Rodriguez, Jessica -- Hillier, LaDeana W -- Hubley, Robert -- Ianc, Bianca -- Izsvak, Zsuzsanna -- Jablonski, Nina G -- Johnstone, Laurel M -- Karimpour-Fard, Anis -- Konkel, Miriam K -- Kostka, Dennis -- Lazar, Nathan H -- Lee, Sandra L -- Lewis, Lora R -- Liu, Yue -- Locke, Devin P -- Mallick, Swapan -- Mendez, Fernando L -- Muffato, Matthieu -- Nazareth, Lynne V -- Nevonen, Kimberly A -- O'Bleness, Majesta -- Ochis, Cornelia -- Odom, Duncan T -- Pollard, Katherine S -- Quilez, Javier -- Reich, David -- Rocchi, Mariano -- Schumann, Gerald G -- Searle, Stephen -- Sikela, James M -- Skollar, Gabriella -- Smit, Arian -- Sonmez, Kemal -- ten Hallers, Boudewijn -- Terhune, Elizabeth -- Thomas, Gregg W C -- Ullmer, Brygg -- Ventura, Mario -- Walker, Jerilyn A -- Wall, Jeffrey D -- Walter, Lutz -- Ward, Michelle C -- Wheelan, Sarah J -- Whelan, Christopher W -- White, Simon -- Wilhelm, Larry J -- Woerner, August E -- Yandell, Mark -- Zhu, Baoli -- Hammer, Michael F -- Marques-Bonet, Tomas -- Eichler, Evan E -- Fulton, Lucinda -- Fronick, Catrina -- Muzny, Donna M -- Warren, Wesley C -- Worley, Kim C -- Rogers, Jeffrey -- Wilson, Richard K -- Gibbs, Richard A -- 095908/Wellcome Trust/United Kingdom -- 15603/Cancer Research UK/United Kingdom -- 260372/European Research Council/International -- HG002385/HG/NHGRI NIH HHS/ -- P30 AA019355/AA/NIAAA NIH HHS/ -- P30CA006973/CA/NCI NIH HHS/ -- P51 RR000163/RR/NCRR NIH HHS/ -- R01 GM059290/GM/NIGMS NIH HHS/ -- R01 GM59290/GM/NIGMS NIH HHS/ -- R01 HG002385/HG/NHGRI NIH HHS/ -- R01 HG002939/HG/NHGRI NIH HHS/ -- R01 HG005226/HG/NHGRI NIH HHS/ -- R01 MH081203/MH/NIMH NIH HHS/ -- R01_HG005226/HG/NHGRI NIH HHS/ -- T15 LM007088/LM/NLM NIH HHS/ -- U41 HG007497/HG/NHGRI NIH HHS/ -- U41 HG007497-01/HG/NHGRI NIH HHS/ -- U41HG007234/HG/NHGRI NIH HHS/ -- U54 HG003079/HG/NHGRI NIH HHS/ -- U54 HG003273/HG/NHGRI NIH HHS/ -- U54HG003273/HG/NHGRI NIH HHS/ -- WT095908/Wellcome Trust/United Kingdom -- WT098051/Wellcome Trust/United Kingdom -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Sep 11;513(7517):195-201. doi: 10.1038/nature13679.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Oregon Health &Science University, Department of Behavioral Neuroscience, 3181 SW Sam Jackson Park Road Portland, Oregon 97239, USA. [2] Oregon National Primate Research Center, Division of Neuroscience, 505 NW 185th Avenue, Beaverton, Oregon 97006, USA. [3] Oregon Health &Science University, Department of Molecular &Medical Genetics, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA. [4] Oregon Health &Science University, Bioinformatics and Computational Biology Division, Department of Medical Informatics &Clinical Epidemiology, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA. ; Baylor College of Medicine, Department of Molecular and Human Genetics, One Baylor Plaza, Houston, Texas 77030, USA. ; Nabsys, 60 Clifford Street, Providence, Rhode Island 02903, USA. ; 1] University of Arizona, ARL Division of Biotechnology, Tucson, Arizona 85721, USA. [2] Stony Brook University, Department of Ecology and Evolution, Stony Brook, New York 11790, USA. ; IBE, Institut de Biologia Evolutiva (UPF-CSIC), Universitat Pompeu Fabra, PRBB, Doctor Aiguader, 88, 08003 Barcelona, Spain. ; 1] Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA. [2] Howard Hughes Medical Institute, 1705 NE Pacific Street, Seattle, Washington 98195, USA. ; Oregon Health &Science University, Department of Behavioral Neuroscience, 3181 SW Sam Jackson Park Road Portland, Oregon 97239, USA. ; 1] European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. [2] The Genome Analysis Centre, Norwich Research Park, Norwich NR4 7UH, UK. [3] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; Leibniz Institute for Primate Research, Gene Bank of Primates, German Primate Center, Gottingen 37077, Germany. ; 1] European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. [2] European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. ; University of Bari, Department of Biology, Via Orabona 4, 70125, Bari, Italy. ; Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA. ; Louisiana State University, Department of Biological Sciences, Baton Rouge, Louisiana 70803, USA. ; European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. ; University of Paul Sabatier, Toulouse 31062, France. ; The Johns Hopkins University School of Medicine, Department of Oncology, Division of Biostatistics and Bioinformatics, Baltimore, Maryland 21205, USA. ; University of Utah, Salt Lake City, Utah 84112, USA. ; Texas A&M University, Department of Ecosystem Science and Management, College Station, Texas 77843, USA. ; Human Genome Sequencing Center, Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas 77030, USA. ; Babes-Bolyai-University, Institute for Interdisciplinary Research in Bio-Nano-Sciences, Molecular Biology Center, Cluj-Napoca 400084, Romania. ; Children's Hospital Oakland Research Institute, BACPAC Resources, Oakland, California 94609, USA. ; University of Colorado School of Medicine, Department of Biochemistry and Molecular Genetics, Aurora, Colorado 80045, USA. ; Max Delbruck Center for Molecular Medicine, Berlin 13125, Germany. ; Centro Nacional de Analisis Genomico (CNAG), Parc Cientific de Barcelona, Barcelona 08028, Spain. ; Indiana University, School of Informatics and Computing, Bloomington, Indiana 47408, USA. ; The Genome Center at Washington University, Washington University School of Medicine, 4444 Forest Park Avenue, Saint Louis, Missouri 63108, USA. ; Institute for Systems Biology, Seattle, Washington 98109-5234, USA. ; The Pennsylvania State University, Department of Anthropology, University Park, Pennsylvania 16802, USA. ; University of Arizona, ARL Division of Biotechnology, Tucson, Arizona 85721, USA. ; University of Pittsburgh School of Medicine, Department of Developmental Biology, Department of Computational and Systems Biology, Pittsburg, Pennsylvania 15261, USA. ; Oregon Health &Science University, Bioinformatics and Computational Biology Division, Department of Medical Informatics &Clinical Epidemiology, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA. ; 1] The Genome Center at Washington University, Washington University School of Medicine, 4444 Forest Park Avenue, Saint Louis, Missouri 63108, USA. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; Harvard Medical School, Department of Genetics, Boston, Massachusetts 02115, USA. ; 1] University of Arizona, ARL Division of Biotechnology, Tucson, Arizona 85721, USA. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; Oregon National Primate Research Center, Division of Neuroscience, 505 NW 185th Avenue, Beaverton, Oregon 97006, USA. ; 1] European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. [2] University of Cambridge, Cancer Research UK-Cambridge Institute, Cambridge CB2 0RE, UK. ; 1] University of California, Gladstone Institutes, San Francisco, California 94158-226, USA. [2] Institute for Human Genetics, University of California, San Francisco, California 94143-0794, USA. [3] Division of Biostatistics, University of California, San Francisco, California 94143-0794, USA. ; Paul Ehrlich Institute, Division of Medical Biotechnology, 63225 Langen, Germany. ; European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. ; Gibbon Conservation Center, 19100 Esguerra Rd, Santa Clarita, California 91350, USA. ; 1] Oregon Health &Science University, Bioinformatics and Computational Biology Division, Department of Medical Informatics &Clinical Epidemiology, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA. [2] Oregon Health &Science University, Center for Spoken Language Understanding, Institute on Development and Disability, Portland, Oregon 97239, USA. ; 1] Children's Hospital Oakland Research Institute, BACPAC Resources, Oakland, California 94609, USA. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; Louisiana State University, School of Electrical Engineering and Computer Science, Baton Rouge, Louisiana 70803, USA. ; 1] Institute for Human Genetics, University of California, San Francisco, California 94143-0794, USA. [2] Division of Biostatistics, University of California, San Francisco, California 94143-0794, USA. ; 1] University of Cambridge, Cancer Research UK-Cambridge Institute, Cambridge CB2 0RE, UK. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; 1] Oregon Health &Science University, Center for Spoken Language Understanding, Institute on Development and Disability, Portland, Oregon 97239, USA. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; 1] IBE, Institut de Biologia Evolutiva (UPF-CSIC), Universitat Pompeu Fabra, PRBB, Doctor Aiguader, 88, 08003 Barcelona, Spain. [2] Centro Nacional de Analisis Genomico (CNAG), Parc Cientific de Barcelona, Barcelona 08028, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25209798" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Evolution, Molecular ; Genome/*genetics ; Hominidae/classification/genetics ; Humans ; Hylobates/*classification/*genetics ; *Karyotype ; Molecular Sequence Data ; *Phylogeny ; Retroelements/genetics ; Selection, Genetic ; Transcription Termination, Genetic
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2006-09-02
    Description: Extreme gene duplication is a major source of evolutionary novelty. A genome-wide survey of gene copy number variation among human and great ape lineages revealed that the most striking human lineage-specific amplification was due to an unknown gene, MGC8902, which is predicted to encode multiple copies of a protein domain of unknown function (DUF1220). Sequences encoding these domains are virtually all primate-specific, show signs of positive selection, and are increasingly amplified generally as a function of a species' evolutionary proximity to humans, where the greatest number of copies (212) is found. DUF1220 domains are highly expressed in brain regions associated with higher cognitive function, and in brain show neuron-specific expression preferentially in cell bodies and dendrites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Popesco, Magdalena C -- Maclaren, Erik J -- Hopkins, Janet -- Dumas, Laura -- Cox, Michael -- Meltesen, Lynne -- McGavran, Loris -- Wyckoff, Gerald J -- Sikela, James M -- AA11853/AA/NIAAA NIH HHS/ -- New York, N.Y. -- Science. 2006 Sep 1;313(5791):1304-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Human Medical Genetics, University of Colorado at Denver and Health Sciences Center, Aurora, CO 80045, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16946073" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Biological Evolution ; Brain/*metabolism ; Cognition ; Exons ; *Gene Amplification ; Gene Dosage ; Gene Duplication ; Gene Expression ; Genome, Human ; Humans ; Macaca mulatta/genetics ; Mice ; Molecular Sequence Data ; Neocortex/metabolism ; Neurons/*metabolism ; Pan troglodytes/genetics ; Phylogeny ; Polymerase Chain Reaction ; *Protein Structure, Tertiary ; Proteins/*chemistry/genetics ; Rats ; *Selection, Genetic
    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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  • 3
    Publication Date: 2011-07-23
    Description: Microglia are highly motile phagocytic cells that infiltrate and take up residence in the developing brain, where they are thought to provide a surveillance and scavenging function. However, although microglia have been shown to engulf and clear damaged cellular debris after brain insult, it remains less clear what role microglia play in the uninjured brain. Here, we show that microglia actively engulf synaptic material and play a major role in synaptic pruning during postnatal development in mice. These findings link microglia surveillance to synaptic maturation and suggest that deficits in microglia function may contribute to synaptic abnormalities seen in some neurodevelopmental disorders.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paolicelli, Rosa C -- Bolasco, Giulia -- Pagani, Francesca -- Maggi, Laura -- Scianni, Maria -- Panzanelli, Patrizia -- Giustetto, Maurizio -- Ferreira, Tiago Alves -- Guiducci, Eva -- Dumas, Laura -- Ragozzino, Davide -- Gross, Cornelius T -- New York, N.Y. -- Science. 2011 Sep 9;333(6048):1456-8. doi: 10.1126/science.1202529. Epub 2011 Jul 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Mouse Biology Unit, European Molecular Biology Laboratory (EMBL), Via Ramarini 32, 00015 Monterotondo, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21778362" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*growth & development/physiology ; Chemokine CX3CL1/metabolism ; Dendritic Spines/physiology/ultrastructure ; Excitatory Postsynaptic Potentials ; Guanylate Kinase/analysis ; Hippocampus/*growth & development/*physiology ; Long-Term Synaptic Depression ; Membrane Proteins/analysis ; Mice ; Mice, Knockout ; Microglia/*physiology ; Miniature Postsynaptic Potentials ; Neuronal Plasticity ; Patch-Clamp Techniques ; Pyramidal Cells/physiology ; Receptors, Chemokine/genetics/metabolism ; Receptors, Cytokine/genetics/metabolism ; Receptors, HIV/genetics/metabolism ; Signal Transduction ; Synapses/*physiology ; Synaptosomal-Associated Protein 25/analysis
    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
    Publication Date: 2019
    Description: 〈p〉The mechanistic basis for the biogenesis of peptide hormones and growth factors is poorly understood. Here, we show that the conserved endoplasmic reticulum membrane translocon-associated protein α (TRAPα), also known as signal sequence receptor 1, plays a critical role in the biosynthesis of insulin. Genetic analysis in the nematode 〈i〉Caenorhabditis elegans〈/i〉 and biochemical studies in pancreatic β cells reveal that TRAPα deletion impairs preproinsulin translocation while unexpectedly disrupting distal steps in insulin biogenesis including proinsulin processing and secretion. The association of common intronic single-nucleotide variants in the human TRAPα gene with susceptibility to type 2 diabetes and pancreatic β cell dysfunction suggests that impairment of preproinsulin translocation and proinsulin trafficking may contribute to the pathogenesis of type 2 diabetes.〈/p〉
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 5 (1901), S. 148-149 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 287-288 (Aug. 1998), p. 255-258 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 103-104 (Apr. 2005), p. 361-364 
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: This paper summarizes the process development of TiN barrier etching in presence of copper, for a thick copper level in BICMOS technology. In an industrial context, we have chosen to use a SC1 chemistry in a spin etch single wafer tool. The SC1 composition and therefore the pH level allows - the barrier to be etched with no metallic residues, ( if not clear this can be a source for shorts) - control of the selectivity between copper and TiN - control of lateral etching under copperlines, the possible source of open chains by W attack during TiN etch. The electrical results show a robust process according to current specifications, in terms of leakage and via resistance with a fresh chemistry approach. In fact, the recirculation of SC1 is not possible due to substantial concentration changes during processing, high evaporation rate of Ammonia and high decomposition rate of Peroxide in the presence of copper on surface wafer
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of statistical physics 82 (1996), S. 1385-1407 
    ISSN: 1572-9613
    Keywords: Lorentz gas ; kinetic theory ; mean free path ; continued fractions ; ergodization rate ; small divisors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We prove theorems pertaining to periodic arrays of spherical, obstacles which show how the macroscopic limit of the mean free path depends on the scaling of the size of the obstacles. We treat separately the cases where the obstacles are totally and partially absorbing, and we also distinguish between two-dimensional arrays, where our results are optimal, and higher dimensional arrays, where they are not. The cubically symmetric arrays to which these results apply do not have finite horizon.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of statistical physics 87 (1997), S. 943-950 
    ISSN: 1572-9613
    Keywords: Mean free path ; dispersive billiards ; periodic Lorentz gas ; kinetic theory ; ext time ; homogenization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this note, we explain in detail how the notion of mean free path is related to the mathematical results obtained in our previous paper.
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  • 10
    Publication Date: 2012-09-06
    Description: DUF1220 protein domains exhibit the most extreme human lineage–specific (HLS) copy number increase of any protein coding region in the human genome and have recently been linked to evolutionary and pathological changes in brain size ( e.g. , 1q21-associated microcephaly). These findings lend support to the view that DUF1220 domain dosage is a key factor in the determination of primate (and human) brain size. Here we analyze 41 animal genomes and present the most complete account to date of the evolutionary history and genome organization of DUF1220 domains and the gene family that encodes them ( NBPF ). Included among the novel features identified by this analysis is a DUF1220 domain precursor in nonmammalian vertebrates, a unique predicted promoter common to all mammalian NBPF genes, six distinct clades into which DUF1220 sequences can be subdivided, and a previously unknown member of the NBPF gene family ( NBPF 25). Most importantly, we show that the exceptional HLS increase in DUF1220 copy number (from 102 in our last common ancestor with chimp to 272 in human; an average HLS increase of ~28 copies every million years since the Homo/Pan split) was driven by intragenic domain hyperamplification. This increase primarily involved a 4.7 kb, tandemly repeated three DUF1220 domain unit we have named the HLS DUF1220 triplet , a motif that is a likely candidate to underlie key properties unique to the Homo sapiens brain. Interestingly, all copies of the HLS DUF1220 triplet lie within a human-specific pericentric inversion that also includes the 1q12 C-band, a polymorphic heterochromatin expansion that is unique to the human genome. Both cytogenetic features likely played key roles in the rapid HLS DUF1220 triplet hyperamplification, which is among the most striking genomic changes specific to the human lineage.
    Electronic ISSN: 2160-1836
    Topics: Biology
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