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  • 1
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    Holocene thinning of the Greenland ice sheet (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-09-18
    Description: On entering an era of global warming, the stability of the Greenland ice sheet (GIS) is an important concern, especially in the light of new evidence of rapidly changing flow and melt conditions at the GIS margins. Studying the response of the GIS to past climatic change may help to advance our understanding of GIS dynamics. The previous interpretation of evidence from stable isotopes (delta(18)O) in water from GIS ice cores was that Holocene climate variability on the GIS differed spatially and that a consistent Holocene climate optimum-the unusually warm period from about 9,000 to 6,000 years ago found in many northern-latitude palaeoclimate records-did not exist. Here we extract both the Greenland Holocene temperature history and the evolution of GIS surface elevation at four GIS locations. We achieve this by comparing delta(18)O from GIS ice cores with delta(18)O from ice cores from small marginal icecaps. Contrary to the earlier interpretation of delta(18)O evidence from ice cores, our new temperature history reveals a pronounced Holocene climatic optimum in Greenland coinciding with maximum thinning near the GIS margins. Our delta(18)O-based results are corroborated by the air content of ice cores, a proxy for surface elevation. State-of-the-art ice sheet models are generally found to be underestimating the extent and changes in GIS elevation and area; our findings may help to improve the ability of models to reproduce the GIS response to Holocene climate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vinther, B M -- Buchardt, S L -- Clausen, H B -- Dahl-Jensen, D -- Johnsen, S J -- Fisher, D A -- Koerner, R M -- Raynaud, D -- Lipenkov, V -- Andersen, K K -- Blunier, T -- Rasmussen, S O -- Steffensen, J P -- Svensson, A M -- England -- Nature. 2009 Sep 17;461(7262):385-8. doi: 10.1038/nature08355.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen Oe, Denmark. bo@gfy.ku.dk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19759618" target="_blank"〉PubMed〈/a〉
    Keywords: Altitude ; *Greenhouse Effect ; Greenland ; History, Ancient ; *Ice Cover ; Oxygen/analysis ; Oxygen Isotopes ; Temperature
    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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  • 2
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    GOLPH3 modulates mTOR signalling and rapamycin sensitivity in cancer (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-06-26
    Description: Genome-wide copy number analyses of human cancers identified a frequent 5p13 amplification in several solid tumour types, including lung (56%), ovarian (38%), breast (32%), prostate (37%) and melanoma (32%). Here, using integrative analysis of a genomic profile of the region, we identify a Golgi protein, GOLPH3, as a candidate targeted for amplification. Gain- and loss-of-function studies in vitro and in vivo validated GOLPH3 as a potent oncogene. Physically, GOLPH3 localizes to the trans-Golgi network and interacts with components of the retromer complex, which in yeast has been linked to target of rapamycin (TOR) signalling. Mechanistically, GOLPH3 regulates cell size, enhances growth-factor-induced mTOR (also known as FRAP1) signalling in human cancer cells, and alters the response to an mTOR inhibitor in vivo. Thus, genomic and genetic, biological, functional and biochemical data in yeast and humans establishes GOLPH3 as a new oncogene that is commonly targeted for amplification in human cancer, and is capable of modulating the response to rapamycin, a cancer drug in clinical use.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2753613/" 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/PMC2753613/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scott, Kenneth L -- Kabbarah, Omar -- Liang, Mei-Chih -- Ivanova, Elena -- Anagnostou, Valsamo -- Wu, Joyce -- Dhakal, Sabin -- Wu, Min -- Chen, Shujuan -- Feinberg, Tamar -- Huang, Joseph -- Saci, Abdel -- Widlund, Hans R -- Fisher, David E -- Xiao, Yonghong -- Rimm, David L -- Protopopov, Alexei -- Wong, Kwok-Kin -- Chin, Lynda -- 5-T32-AR07098-31/AR/NIAMS NIH HHS/ -- P50 CA090578/CA/NCI NIH HHS/ -- P50 CA093683/CA/NCI NIH HHS/ -- P50 CA093683-06A20011/CA/NCI NIH HHS/ -- P50 CA93683/CA/NCI NIH HHS/ -- R0-1 CA 114277/CA/NCI NIH HHS/ -- R01 AG2400401/AG/NIA NIH HHS/ -- R01 CA093947/CA/NCI NIH HHS/ -- R01 CA093947-08/CA/NCI NIH HHS/ -- R01 CA114277/CA/NCI NIH HHS/ -- R01 CA114277-04/CA/NCI NIH HHS/ -- R01 CA122794/CA/NCI NIH HHS/ -- R01 CA122794-03/CA/NCI NIH HHS/ -- R01 CA93947/CA/NCI NIH HHS/ -- T32 AR007098/AR/NIAMS NIH HHS/ -- T32 AR007098-32/AR/NIAMS NIH HHS/ -- England -- Nature. 2009 Jun 25;459(7250):1085-90. doi: 10.1038/nature08109.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19553991" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibiotics, Antineoplastic/*pharmacology ; Cell Line, Tumor/drug effects ; DNA-Binding Proteins/genetics ; Female ; Gene Knockdown Techniques ; Humans ; Membrane Proteins/genetics/*metabolism ; Mice ; Mice, Nude ; Neoplasms/*physiopathology ; Protein Kinases/genetics/*metabolism ; Saccharomyces cerevisiae/genetics ; *Signal Transduction ; Sirolimus/*pharmacology ; TOR Serine-Threonine Kinases ; Transcription Factors/genetics
    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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  • 3
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    Microbiology. A proteomic snapshot of life at a vent (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-01-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fisher, Charles R -- Girguis, Peter -- New York, N.Y. -- Science. 2007 Jan 12;315(5809):198-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Pennsylvania State University, University Park, PA 16801, USA. cfisher@psu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17218516" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/analysis/*metabolism ; Carbon/metabolism ; Carbon Isotopes/analysis ; Chemoautotrophic Growth ; Citric Acid Cycle ; *Ecosystem ; Gammaproteobacteria/*metabolism ; Metabolic Networks and Pathways ; Oxidation-Reduction ; Pacific Ocean ; Polychaeta/*microbiology/*physiology ; Proteome ; *Proteomics ; Reproduction ; Sulfides/metabolism ; *Symbiosis ; Temperature
    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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  • 4
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    High-throughput sequencing of the zebrafish antibody repertoire (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-05-09
    Description: Despite tremendous progress in understanding the nature of the immune system, the full diversity of an organism's antibody repertoire is unknown. We used high-throughput sequencing of the variable domain of the antibody heavy chain from 14 zebrafish to analyze VDJ usage and antibody sequence. Zebrafish were found to use between 50 and 86% of all possible VDJ combinations and shared a similar frequency distribution, with some correlation of VDJ patterns between individuals. Zebrafish antibodies retained a few thousand unique heavy chains that also exhibited a shared frequency distribution. We found evidence of convergence, in which different individuals made the same antibody. This approach provides insight into the breadth of the expressed antibody repertoire and immunological diversity at the level of an individual organism.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3086368/" 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/PMC3086368/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weinstein, Joshua A -- Jiang, Ning -- White, Richard A 3rd -- Fisher, Daniel S -- Quake, Stephen R -- DP1 OD000251/OD/NIH HHS/ -- DP1 OD000251-04/OD/NIH HHS/ -- DP1 OD000251-05/OD/NIH HHS/ -- DP1 OD000251-06/OD/NIH HHS/ -- New York, N.Y. -- Science. 2009 May 8;324(5928):807-10. doi: 10.1126/science.1170020.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biophysics Program, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19423829" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/genetics ; Antibody Diversity ; Base Sequence ; Complementarity Determining Regions/*genetics ; Computational Biology ; Female ; Gene Library ; *Genes, Immunoglobulin Heavy Chain ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin Joining Region/genetics ; Immunoglobulin M/*genetics ; Male ; Molecular Sequence Data ; Recombination, Genetic ; Sequence Analysis, DNA ; VDJ Exons ; Zebrafish/genetics/*immunology
    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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    Mars water-ice clouds and precipitation (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-07-04
    Description: The light detection and ranging instrument on the Phoenix mission observed water-ice clouds in the atmosphere of Mars that were similar to cirrus clouds on Earth. Fall streaks in the cloud structure traced the precipitation of ice crystals toward the ground. Measurements of atmospheric dust indicated that the planetary boundary layer (PBL) on Mars was well mixed, up to heights of around 4 kilometers, by the summer daytime turbulence and convection. The water-ice clouds were detected at the top of the PBL and near the ground each night in late summer after the air temperature started decreasing. The interpretation is that water vapor mixed upward by daytime turbulence and convection forms ice crystal clouds at night that precipitate back toward the surface.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Whiteway, J A -- Komguem, L -- Dickinson, C -- Cook, C -- Illnicki, M -- Seabrook, J -- Popovici, V -- Duck, T J -- Davy, R -- Taylor, P A -- Pathak, J -- Fisher, D -- Carswell, A I -- Daly, M -- Hipkin, V -- Zent, A P -- Hecht, M H -- Wood, S E -- Tamppari, L K -- Renno, N -- Moores, J E -- Lemmon, M T -- Daerden, F -- Smith, P H -- New York, N.Y. -- Science. 2009 Jul 3;325(5936):68-70. doi: 10.1126/science.1172344.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth and Space Science and Engineering, York University, Toronto, Ontario, Canada. whiteway@yorku.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19574386" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Extraterrestrial Environment ; *Ice ; *Mars ; Spacecraft ; *Steam ; Temperature ; Time Factors
    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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    An aneuploid mouse strain carrying human chromosome 21 with Down syndrome phenotypes (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-09-24
    Description: Aneuploidies are common chromosomal defects that result in growth and developmental deficits and high levels of lethality in humans. To gain insight into the biology of aneuploidies, we manipulated mouse embryonic stem cells and generated a trans-species aneuploid mouse line that stably transmits a freely segregating, almost complete human chromosome 21 (Hsa21). This "transchromosomic" mouse line, Tc1, is a model of trisomy 21, which manifests as Down syndrome (DS) in humans, and has phenotypic alterations in behavior, synaptic plasticity, cerebellar neuronal number, heart development, and mandible size that relate to human DS. Transchromosomic mouse lines such as Tc1 may represent useful genetic tools for dissecting other human aneuploidies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1378183/" 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/PMC1378183/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Doherty, Aideen -- Ruf, Sandra -- Mulligan, Claire -- Hildreth, Victoria -- Errington, Mick L -- Cooke, Sam -- Sesay, Abdul -- Modino, Sonie -- Vanes, Lesley -- Hernandez, Diana -- Linehan, Jacqueline M -- Sharpe, Paul T -- Brandner, Sebastian -- Bliss, Timothy V P -- Henderson, Deborah J -- Nizetic, Dean -- Tybulewicz, Victor L J -- Fisher, Elizabeth M C -- 076700/Wellcome Trust/United Kingdom -- MC_U117512674/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2005 Sep 23;309(5743):2033-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurodegenerative Disease, Institute of Neurology, Queen Square, London WC1N 3BG, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16179473" target="_blank"〉PubMed〈/a〉
    Keywords: *Aneuploidy ; Animals ; Behavior, Animal ; Brain/pathology ; Cell Count ; Cell Line ; Chimera ; *Chromosomes, Human, Pair 21 ; *Disease Models, Animal ; *Down Syndrome/genetics/physiopathology ; Embryo, Mammalian/cytology ; Facial Bones/pathology ; Female ; Gene Expression ; *Genetic Engineering ; Genetic Markers ; Heart Defects, Congenital/embryology ; Hippocampus/physiopathology ; Humans ; Long-Term Potentiation ; Lymphocyte Activation ; Male ; Maze Learning ; Memory ; Mice ; Mice, Inbred Strains ; *Mice, Transgenic ; Neurons/cytology ; Oligonucleotide Array Sequence Analysis ; Phenotype ; Skull/pathology ; Stem Cells ; Synaptic Transmission ; T-Lymphocytes/immunology
    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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    H2O at the Phoenix landing site (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-07-04
    Description: The Phoenix mission investigated patterned ground and weather in the northern arctic region of Mars for 5 months starting 25 May 2008 (solar longitude between 76.5 degrees and 148 degrees ). A shallow ice table was uncovered by the robotic arm in the center and edge of a nearby polygon at depths of 5 to 18 centimeters. In late summer, snowfall and frost blanketed the surface at night; H(2)O ice and vapor constantly interacted with the soil. The soil was alkaline (pH = 7.7) and contained CaCO(3), aqueous minerals, and salts up to several weight percent in the indurated surface soil. Their formation likely required the presence of water.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, P H -- Tamppari, L K -- Arvidson, R E -- Bass, D -- Blaney, D -- Boynton, W V -- Carswell, A -- Catling, D C -- Clark, B C -- Duck, T -- Dejong, E -- Fisher, D -- Goetz, W -- Gunnlaugsson, H P -- Hecht, M H -- Hipkin, V -- Hoffman, J -- Hviid, S F -- Keller, H U -- Kounaves, S P -- Lange, C F -- Lemmon, M T -- Madsen, M B -- Markiewicz, W J -- Marshall, J -- McKay, C P -- Mellon, M T -- Ming, D W -- Morris, R V -- Pike, W T -- Renno, N -- Staufer, U -- Stoker, C -- Taylor, P -- Whiteway, J A -- Zent, A P -- New York, N.Y. -- Science. 2009 Jul 3;325(5936):58-61. doi: 10.1126/science.1172339.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA. psmith@lpl.arizona.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19574383" target="_blank"〉PubMed〈/a〉
    Keywords: Calcium Carbonate ; Extraterrestrial Environment ; Hydrogen-Ion Concentration ; *Ice ; *Mars ; Robotics ; Spacecraft ; Temperature ; *Water
    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
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    ABM Drag_Pass Report Generator (2008)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: dragREPORT software was developed in parallel with abmREPORT, which is described in the preceding article. Both programs were built on the capabilities created during that process. This tool generates a drag_pass report that summarizes vital information from the MRO aerobreaking drag_pass build process to facilitate both sequence reviews and provide a high-level summarization of the sequence for mission management. The script extracts information from the ENV, SSF, FRF, SCMFmax, and OPTG files, presenting them in a single, easy-to-check report providing the majority of parameters needed for cross check and verification as part of the sequence review process. Prior to dragReport, all the needed information was spread across a number of different files, each in a different format. This software is a Perl script that extracts vital summarization information and build-process details from a number of source files into a single, concise report format used to aid the MPST sequence review process and to provide a high-level summarization of the sequence for mission management reference. This software could be adapted for future aerobraking missions to provide similar reports, review and summarization information.
    Keywords: Computer Programming and Software
    Type: NPO-44384 , NASA Tech Briefs, June 2008; 15
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  • 9
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    Aerobraking Maneuver (ABM) Report Generator (2008)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: abmREPORT Version 3.1 is a Perl script that extracts vital summarization information from the Mars Reconnaissance Orbiter (MRO) aerobraking ABM build process. This information facilitates sequence reviews, and provides a high-level summarization of the sequence for mission management. The script extracts information from the ENV, SSF, FRF, SCMFmax, and OPTG files and burn magnitude configuration files and presents them in a single, easy-to-check report that provides the majority of the parameters necessary for cross check and verification during the sequence review process. This means that needed information, formerly spread across a number of different files and each in a different format, is all available in this one application. This program is built on the capabilities developed in dragReport and then the scripts evolved as the two tools continued to be developed in parallel.
    Keywords: Computer Programming and Software
    Type: NPO-44382 , NASA Tech Briefs, June 2008; 15
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  • 10
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    Mars Reconnaissance Orbiter Uplink Analysis Tool (2008)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: This software analyzes Mars Reconnaissance Orbiter (MRO) orbital geometry with respect to Mars Exploration Rover (MER) contact windows, and is the first tool of its kind designed specifically to support MRO-MER interface coordination. Prior to this automated tool, this analysis was done manually with Excel and the UNIX command line. In total, the process would take approximately 30 minutes for each analysis. The current automated analysis takes less than 30 seconds. This tool resides on the flight machine and uses a PHP interface that does the entire analysis of the input files and takes into account one-way light time from another input file. Input flies are copied over to the proper directories and are dynamically read into the tool s interface. The user can then choose the corresponding input files based on the time frame desired for analysis. After submission of the Web form, the tool merges the two files into a single, time-ordered listing of events for both spacecraft. The times are converted to the same reference time (Earth Transmit Time) by reading in a light time file and performing the calculations necessary to shift the time formats. The program also has the ability to vary the size of the keep-out window on the main page of the analysis tool by inputting a custom time for padding each MRO event time. The parameters on the form are read in and passed to the second page for analysis. Everything is fully coded in PHP and can be accessed by anyone with access to the machine via Web page. This uplink tool will continue to be used for the duration of the MER mission's needs for X-band uplinks. Future missions also can use the tools to check overflight times as well as potential site observation times. Adaptation of the input files to the proper format, and the window keep-out times, would allow for other analyses. Any operations task that uses the idea of keep-out windows will have a use for this program.
    Keywords: Computer Programming and Software
    Type: NPO-44222 , NASA Tech Briefs, June 2008; 16
    Format: application/pdf
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