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  • 1
    Publication Date: 2011-04-22
    Description: During the dry season, anthropogenic fires in tropical forests and peatlands of equatorial Asia produce regionally expansive smoke clouds that have important effects on atmospheric radiation and air quality. Here we estimated the height of smoke on Borneo and Sumatra and characterized its sensitivity to El Niño and regional drought. We used Multiangle Imaging Spectroradiometer (MISR) satellite data and the MISR Interactive Explorer (MINX) software to estimate the heights of 317 smoke plumes on Borneo and 139 plumes on Sumatra during 2001–2009. In addition, we estimated the altitudes of larger smoke regions (smoke clouds) over Borneo using data from MISR and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) products. Most smoke plumes on Borneo (83%) were observed during El Niño years. Annually averaged plume heights on Borneo were significantly higher during El Niño events. Mean MISR-derived plume heights were 709 ± 14 m on Borneo and 749 ± 24 m on Sumatra during 2001–2009, with 96% of all plumes confined to within 500 m of the atmospheric boundary layer. Smoke clouds on Borneo were observed at altitudes between 1000 and 2000 m as measured by both MISR and CALIPSO. The difference in height between individual plumes and longer-lived regional smoke clouds may be related to deeper planetary boundary layers and higher-intensity fires later in the afternoon or other atmospheric mixing processes that occur on synoptic time scales. Our measurements and analyses suggested that direct injection of smoke into the free troposphere within fire plumes was not an important mechanism for vertical mixing of aerosols in equatorial Asia.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 2
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    In:  Eos Trans. AGU, Darmstadt, Wissenschaftliche Buchgesellschaft, vol. 84, no. 5, pp. 37 & 43, pp. L11308, (ISSN: 1340-4202)
    Publication Date: 2003
    Keywords: Earthquake ; Gujarat ; India ; Jan. ; 26 ; 2001 ; Site amplification ; soil ; remote ; sensing ; Melin
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  • 3
    Publication Date: 2012-04-12
    Description: Fragile X-associated tremor/ataxia syndrome (FXTAS) is a progressive neurodegenerative disorder recognized in fragile X premutation carriers. Using Drosophila , we previously identified elongated non-coding CGG repeats in FMR1 allele as the pathogenic cause of FXTAS. Here, we use this same FXTAS Drosophila model to conduct a chemical screen that reveals small molecules that can ameliorate the toxic effects of fragile X premutation ribo-CGG (rCGG) repeats, among them several known phospholipase A 2 (PLA 2 ) inhibitors. We show that specific inhibition of PLA 2 activity could mitigate the neuronal deficits caused by fragile X premutation rCGG repeats, including lethality and locomotion deficits. Furthermore, through a genetic screen, we identified a PLA 2 Drosophila ortholog that specifically modulates rCGG repeat-mediated neuronal toxicity. Our results demonstrate the utility of Drosophila models for unbiased small molecule screens and point to PLA 2 as a possible therapeutic target to treat FXTAS.
    Print ISSN: 0964-6906
    Electronic ISSN: 1460-2083
    Topics: Biology , Medicine
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  • 4
    Publication Date: 2012-03-28
    Description: In the last twelve years, Mt. Etna, located in eastern Sicily, has produced a great number of explosive eruptions. Volcanic plumes have risen to several km above sea level and created problems for aviation and the communities living near the volcano. A reduction of hazards may be accomplished using remote sensing techniques to evaluate important features of volcanic plumes. Since 2000, the Multiangle Imaging SpectroRadiometer (MISR) on board NASA's Terra spacecraft has been extensively used to study aerosol dispersal and to extract the three-dimensional structure of plumes coming from anthropogenic or natural sources, including volcanoes. In the present work, MISR data from several explosive events occurring at Etna are analyzed using a program named MINX (MISR INteractive eXplorer). MINX uses stereo matching techniques to evaluate the height of the volcanic aerosol with a precision of a few hundred meters, and extracts aerosol properties from the MISR Standard products. We analyzed twenty volcanic plumes produced during the 2000, 2001, 2002–03, 2006 and 2008 Etna eruptions, finding that volcanic aerosol dispersal and column height obtained by this analysis is in good agreement with ground-based observations. MISR aerosol type retrievals: (1) clearly distinguish volcanic plumes that are sulphate and/or water vapor dominated from ash-dominated ones; (2) detect even low concentrations of volcanic ash in the atmosphere; (3) demonstrate that sulphate and/or water vapor dominated plumes consist of smaller-sized particles compared to ash plumes. This work highlights the potential of MISR to detect important volcanic plume characteristics that can be used to constrain the eruption source parameters in volcanic ash dispersion models. Further, the possibility of discriminating sulphate and/or water vapor dominated plumes from ash-dominated ones is important to better understand the atmospheric impact of these plumes.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 5
    Publication Date: 2000-03-25
    Description: The fly Drosophila melanogaster is one of the most intensively studied organisms in biology and serves as a model system for the investigation of many developmental and cellular processes common to higher eukaryotes, including humans. We have determined the nucleotide sequence of nearly all of the approximately 120-megabase euchromatic portion of the Drosophila genome using a whole-genome shotgun sequencing strategy supported by extensive clone-based sequence and a high-quality bacterial artificial chromosome physical map. Efforts are under way to close the remaining gaps; however, the sequence is of sufficient accuracy and contiguity to be declared substantially complete and to support an initial analysis of genome structure and preliminary gene annotation and interpretation. The genome encodes approximately 13,600 genes, somewhat fewer than the smaller Caenorhabditis elegans genome, but with comparable functional diversity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, M D -- Celniker, S E -- Holt, R A -- Evans, C A -- Gocayne, J D -- Amanatides, P G -- Scherer, S E -- Li, P W -- Hoskins, R A -- Galle, R F -- George, R A -- Lewis, S E -- Richards, S -- Ashburner, M -- Henderson, S N -- Sutton, G G -- Wortman, J R -- Yandell, M D -- Zhang, Q -- Chen, L X -- Brandon, R C -- Rogers, Y H -- Blazej, R G -- Champe, M -- Pfeiffer, B D -- Wan, K H -- Doyle, C -- Baxter, E G -- Helt, G -- Nelson, C R -- Gabor, G L -- Abril, J F -- Agbayani, A -- An, H J -- Andrews-Pfannkoch, C -- Baldwin, D -- Ballew, R M -- Basu, A -- Baxendale, J -- Bayraktaroglu, L -- Beasley, E M -- Beeson, K Y -- Benos, P V -- Berman, B P -- Bhandari, D -- Bolshakov, S -- Borkova, D -- Botchan, M R -- Bouck, J -- Brokstein, P -- Brottier, P -- Burtis, K C -- Busam, D A -- Butler, H -- Cadieu, E -- Center, A -- Chandra, I -- Cherry, J M -- Cawley, S -- Dahlke, C -- Davenport, L B -- Davies, P -- de Pablos, B -- Delcher, A -- Deng, Z -- Mays, A D -- Dew, I -- Dietz, S M -- Dodson, K -- Doup, L E -- Downes, M -- Dugan-Rocha, S -- Dunkov, B C -- Dunn, P -- Durbin, K J -- Evangelista, C C -- Ferraz, C -- Ferriera, S -- Fleischmann, W -- Fosler, C -- Gabrielian, A E -- Garg, N S -- Gelbart, W M -- Glasser, K -- Glodek, A -- Gong, F -- Gorrell, J H -- Gu, Z -- Guan, P -- Harris, M -- Harris, N L -- Harvey, D -- Heiman, T J -- Hernandez, J R -- Houck, J -- Hostin, D -- Houston, K A -- Howland, T J -- Wei, M H -- Ibegwam, C -- Jalali, M -- Kalush, F -- Karpen, G H -- Ke, Z -- Kennison, J A -- Ketchum, K A -- Kimmel, B E -- Kodira, C D -- Kraft, C -- Kravitz, S -- Kulp, D -- Lai, Z -- Lasko, P -- Lei, Y -- Levitsky, A A -- Li, J -- Li, Z -- Liang, Y -- Lin, X -- Liu, X -- Mattei, B -- McIntosh, T C -- McLeod, M P -- McPherson, D -- Merkulov, G -- Milshina, N V -- Mobarry, C -- Morris, J -- Moshrefi, A -- Mount, S M -- Moy, M -- Murphy, B -- Murphy, L -- Muzny, D M -- Nelson, D L -- Nelson, D R -- Nelson, K A -- Nixon, K -- Nusskern, D R -- Pacleb, J M -- Palazzolo, M -- Pittman, G S -- Pan, S -- Pollard, J -- Puri, V -- Reese, M G -- Reinert, K -- Remington, K -- Saunders, R D -- Scheeler, F -- Shen, H -- Shue, B C -- Siden-Kiamos, I -- Simpson, M -- Skupski, M P -- Smith, T -- Spier, E -- Spradling, A C -- Stapleton, M -- Strong, R -- Sun, E -- Svirskas, R -- Tector, C -- Turner, R -- Venter, E -- Wang, A H -- Wang, X -- Wang, Z Y -- Wassarman, D A -- Weinstock, G M -- Weissenbach, J -- Williams, S M -- WoodageT -- Worley, K C -- Wu, D -- Yang, S -- Yao, Q A -- Ye, J -- Yeh, R F -- Zaveri, J S -- Zhan, M -- Zhang, G -- Zhao, Q -- Zheng, L -- Zheng, X H -- Zhong, F N -- Zhong, W -- Zhou, X -- Zhu, S -- Zhu, X -- Smith, H O -- Gibbs, R A -- Myers, E W -- Rubin, G M -- Venter, J C -- P50-HG00750/HG/NHGRI NIH HHS/ -- U54 HG003273/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2000 Mar 24;287(5461):2185-95.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Celera Genomics, 45 West Gude Drive, Rockville, MD 20850, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10731132" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport/genetics ; Chromatin/genetics ; Cloning, Molecular ; Computational Biology ; Contig Mapping ; Cytochrome P-450 Enzyme System/genetics ; DNA Repair/genetics ; DNA Replication/genetics ; Drosophila melanogaster/*genetics/metabolism ; Euchromatin ; Gene Library ; Genes, Insect ; *Genome ; Heterochromatin/genetics ; Insect Proteins/chemistry/genetics/physiology ; Nuclear Proteins/genetics ; Protein Biosynthesis ; *Sequence Analysis, DNA ; Transcription, 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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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1992-05-18
    Description: Triplet repeats are the sites of mutation in three human heritable disorders, spinal and bulbar muscular atrophy (SBMA), fragile X syndrome, and myotonic dystrophy (DM). These repeats are GC-rich and highly polymorphic in the normal population. Fragile X syndrome and DM are examples of diseases in which premutation alleles cause little or no disease in the individual, but give rise to significantly amplified repeats in affected progeny. This newly identified mechanism of mutation has, so far, been identified in two of the most common heritable disorders, fragile X syndrome and DM, and one rare disease, SBMA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Caskey, C T -- Pizzuti, A -- Fu, Y H -- Fenwick, R G Jr -- Nelson, D L -- 1R01HD29256/HD/NICHD NIH HHS/ -- P30-HG00210/HG/NHGRI NIH HHS/ -- P30HD24064/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1992 May 8;256(5058):784-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Molecular Genetics, Baylor College of Medicine, Houston, TX 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1589758" target="_blank"〉PubMed〈/a〉
    Keywords: Female ; Fragile X Syndrome/*genetics/physiopathology ; Genetic Diseases, Inborn/*genetics/physiopathology ; Humans ; Male ; Muscular Atrophy, Spinal/*genetics/physiopathology ; *Mutation ; Myotonic Dystrophy/*genetics/physiopathology ; Pedigree ; Repetitive Sequences, Nucleic Acid
    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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  • 7
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1992-10-02
    Description: A unified genetic, physical, and functional map of the human X chromosome is being built through a concerted, international effort. About 40 percent of the 160 million base pairs of the X chromosome DNA have been cloned in overlapping, ordered contigs derived from yeast artificial chromosomes. This rapid progress toward a physical map is accelerating the identification of inherited disease genes, 26 of which are already cloned and more than 50 others regionally localized by linkage analysis. This article summarizes the mapping strategies now used and the impact of genome research on the understanding of X chromosome inactivation and X-linked diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mandel, J L -- Monaco, A P -- Nelson, D L -- Schlessinger, D -- Willard, H -- New York, N.Y. -- Science. 1992 Oct 2;258(5079):103-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de Genetique Moleculaire des Eucaryotes du CNRS, INSERM, Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1439756" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Chromosome Mapping ; Dosage Compensation, Genetic ; Female ; *Genome, Human ; Humans ; Macropodidae ; Male ; Mice ; Mutation ; Sex Chromosome Aberrations ; *X Chromosome
    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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  • 8
    Publication Date: 1992-10-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mandel, J L -- Monaco, A P -- Nelson, D L -- Schlessinger, D -- Willard, H F -- Chipperfield, M -- Pearson, P -- Gilna, P -- Cinkosky, M -- New York, N.Y. -- Science. 1992 Oct 2;258(5079):87-102.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉INSERM, Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1439771" target="_blank"〉PubMed〈/a〉
    Keywords: *Chromosome Mapping ; Chromosomes, Human ; Female ; Genetic Linkage ; Genetic Markers ; *Genome, Human ; Humans ; Sex Chromosome Aberrations ; X Chromosome
    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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  • 9
    Publication Date: 1990-08-10
    Description: A library of human-derived complementary DNA from a human-hamster hybrid cell line containing the Xq24-qter region has been constructed. Complementary DNA synthesis was primed from heterogeneous nuclear (hn) RNA by oligonucleotides derived from conserved regions of human Alu repeats. At least 80% of these cloned sequences were of human origin, providing an enrichment of at least two orders of magnitude. Two clones, one containing a fragment of the primary transcript of the human hypoxanthine-guanine phosphoribosyltransferase (HPRT) gene at Xq26 and another recognizing a family of human genes mapping to two regions of Xq24-qter, were characterized. Additional hncDNA clones mapped to a variety of sites in the Xq24-qter region, demonstrating the isolation of many transcriptionally active loci. These clones provide probes for identification of genetic loci on the terminal region of the X chromosome long arm, which is the location of a number of inherited disorders.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Corbo, L -- Maley, J A -- Nelson, D L -- Caskey, C T -- New York, N.Y. -- Science. 1990 Aug 10;249(4969):652-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Molecular Genetics, Baylor College of Medicine, Houston, TX 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2382140" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; Chromosome Mapping ; Cloning, Molecular/methods ; Cricetinae ; DNA, Single-Stranded/genetics/isolation & purification ; Deoxyribonuclease EcoRI ; Humans ; Hybrid Cells/cytology ; Molecular Sequence Data ; Molecular Weight ; Nucleic Acid Hybridization ; Oligonucleotide Probes ; RNA, Heterogeneous Nuclear/*genetics ; Restriction Mapping ; *Transcription, Genetic ; *X Chromosome
    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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  • 10
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