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  • 1
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    Cardiovascular evidence for an intermediate or higher metabolic rate in an ornithischian dinosaur (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-25
    Description: Computerized tomography scans of a ferruginous concretion within the chest region of an ornithischian dinosaur reveal structures that are suggestive of a four-chambered heart and a single systemic aorta. The apparently derived condition of the cardiovascular system in turn suggests the existence of intermediate-to-high metabolic rates among dinosaurs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fisher, P E -- Russell, D A -- Stoskopf, M K -- Barrick, R E -- Hammer, M -- Kuzmitz, A A -- New York, N.Y. -- Science. 2000 Apr 21;288(5465):503-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biomedical Imaging Facility, College of Veterinary Medicine, North Carolina State University, 4700 Hillsborough Street, Raleigh, NC 27606, USA. PaulvFisher@ncsu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10775107" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta/anatomy & histology ; Basal Metabolism ; Birds/anatomy & histology/metabolism ; Body Weight ; *Fossils ; Heart/*anatomy & histology/radiography ; Image Processing, Computer-Assisted ; Iron Compounds/analysis ; Minerals ; Paleontology ; Reptiles/*anatomy & histology/*metabolism ; Tomography Scanners, X-Ray Computed ; Tomography, X-Ray Computed ; X-Ray Diffraction
    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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  • 2
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    Sequence interpretation. Functional annotation of mouse genome sequences (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nadeau, J H -- Balling, R -- Barsh, G -- Beier, D -- Brown, S D -- Bucan, M -- Camper, S -- Carlson, G -- Copeland, N -- Eppig, J -- Fletcher, C -- Frankel, W N -- Ganten, D -- Goldowitz, D -- Goodnow, C -- Guenet, J L -- Hicks, G -- Hrabe de Angelis, M -- Jackson, I -- Jacob, H J -- Jenkins, N -- Johnson, D -- Justice, M -- Kay, S -- Kingsley, D -- Lehrach, H -- Magnuson, T -- Meisler, M -- Poustka, A -- Rinchik, E M -- Rossant, J -- Russell, L B -- Schimenti, J -- Shiroishi, T -- Skarnes, W C -- Soriano, P -- Stanford, W -- Takahashi, J S -- Wurst, W -- Zimmer, A -- International Mouse Mutagenesis Consortium -- New York, N.Y. -- Science. 2001 Feb 16;291(5507):1251-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, BRB 624, Case Western Reserve University School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA. jhn4@po.cwru.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11233449" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Mapping ; *Computational Biology ; Costs and Cost Analysis ; Genes/physiology ; Genetic Techniques ; *Genome ; *Genomics ; International Cooperation ; Mice/*genetics ; Mutagenesis ; Mutation ; Phenotype ; Private Sector ; Public Sector ; Research Support as Topic ; *Sequence Analysis, DNA
    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
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    Factors that alter rumen microbial ecology (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-16
    Description: Ruminant animals and ruminal microorganisms have a symbiotic relationship that facilitates fiber digestion, but domestic ruminants in developed countries are often fed an abundance of grain and little fiber. When ruminants are fed fiber-deficient rations, physiological mechanisms of homeostasis are disrupted, ruminal pH declines, microbial ecology is altered, and the animal becomes more susceptible to metabolic disorders and, in some cases, infectious disease. Some disorders can be counteracted by feed additives (for example, antibiotics and buffers), but these additives can alter the composition of the ruminal ecosystem even further.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Russell, J B -- Rychlik, J L -- New York, N.Y. -- Science. 2001 May 11;292(5519):1119-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Agricultural Research Service, U.S. Department of Agriculture, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11352069" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Domestic/anatomy & histology/microbiology/parasitology/physiology ; Bacteria/metabolism/pathogenicity ; Digestive System/anatomy & histology/*microbiology/parasitology/physiopathology ; *Digestive System Physiological Phenomena ; Drug Resistance, Microbial ; *Ecology ; Eukaryota/metabolism ; Fermentation ; Homeostasis ; Host-Parasite Interactions ; Humans ; Hydrogen-Ion Concentration ; Ruminants/anatomy & histology/*microbiology/parasitology/*physiology ; Symbiosis/physiology
    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
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    Cooperation, control, and concession in meerkat groups (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-13
    Description: "Limited control" models of reproductive skew in cooperative societies suggest that the frequency of breeding by subordinates is determined by the outcome of power struggles with dominants. In contrast, "optimal skew" models suggest that dominants have full control of subordinate reproduction and allow subordinates to breed only when this serves to retain subordinates' assistance with rearing dominants' own litters. The results of our 7-year field study of cooperative meerkats, Suricata suricatta, support the predictions of limited control models and provide no indication that dominant females grant reproductive concessions to subordinates to retain their assistance with future breeding attempts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clutton-Brock, T H -- Brotherton, P N -- Russell, A F -- O'Riain, M J -- Gaynor, D -- Kansky, R -- Griffin, A -- Manser, M -- Sharpe, L -- McIlrath, G M -- Small, T -- Moss, A -- Monfort, S -- New York, N.Y. -- Science. 2001 Jan 19;291(5503):478-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. thcb@hermes.cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11161200" target="_blank"〉PubMed〈/a〉
    Keywords: Africa, Southern ; Aging ; Animals ; Behavior, Animal ; Body Weight ; Carnivora/*physiology ; *Cooperative Behavior ; *Dominance-Subordination ; Female ; Male ; Models, Biological ; Rain ; *Reproduction ; Seasons ; *Sexual Behavior, Animal
    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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  • 5
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    Effects of helpers on juvenile development and survival in meerkats (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-29
    Description: Although breeding success is known to increase with group size in several cooperative mammals, the mechanisms underlying these relationships are uncertain. We show that in wild groups of cooperative meerkats, Suricata suricatta, reductions in the ratio of helpers to pups depress the daily weight gain and growth of pups and the daily weight gain of helpers. Increases in the daily weight gain of pups are associated with heavier weights at independence and at 1 year of age, as well as with improved foraging success as juveniles and higher survival rates through the first year of life. These results suggest that the effects of helpers on the fitness of pups extend beyond weaning and that helpers may gain direct as well as indirect benefits by feeding pups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clutton-Brock, T H -- Russell, A F -- Sharpe, L L -- Brotherton, P N -- McIlrath, G M -- White, S -- Cameron, E Z -- New York, N.Y. -- Science. 2001 Sep 28;293(5539):2446-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. thcb@hermes.cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11577235" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breeding ; Carnivora/growth & development/*physiology ; *Cooperative Behavior ; Feeding Behavior ; Female ; Male ; Survival Rate ; *Weight Gain
    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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    A single-molecule study of RNA catalysis and folding (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-06-17
    Description: Using fluorescence microscopy, we studied the catalysis by and folding of individual Tetrahymena thermophila ribozyme molecules. The dye-labeled and surface-immobilized ribozymes used were shown to be functionally indistinguishable from the unmodified free ribozyme in solution. A reversible local folding step in which a duplex docks and undocks from the ribozyme core was observed directly in single-molecule time trajectories, allowing the determination of the rate constants and characterization of the transition state. A rarely populated docked state, not measurable by ensemble methods, was observed. In the overall folding process, intermediate folding states and multiple folding pathways were observed. In addition to observing previously established folding pathways, a pathway with an observed folding rate constant of 1 per second was discovered. These results establish single-molecule fluorescence as a powerful tool for examining RNA folding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhuang, X -- Bartley, L E -- Babcock, H P -- Russell, R -- Ha, T -- Herschlag, D -- Chu, S -- GM49423/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Jun 16;288(5473):2048-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Stanford University, Stanford, CA 94305-4060, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10856219" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biotinylation ; Carbocyanines ; Catalysis ; Fluorescent Dyes ; Guanosine/metabolism ; Kinetics ; Microscopy, Fluorescence ; Models, Molecular ; *Nucleic Acid Conformation ; Oligoribonucleotides/metabolism ; RNA, Catalytic/*chemistry/*metabolism ; RNA, Protozoan/*chemistry/metabolism ; Tetrahymena thermophila
    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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    The structure and receptor binding properties of the 1918 influenza hemagglutinin (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-07
    Description: The 1918 influenza pandemic resulted in about 20 million deaths. This enormous impact, coupled with renewed interest in emerging infections, makes characterization of the virus involved a priority. Receptor binding, the initial event in virus infection, is a major determinant of virus transmissibility that, for influenza viruses, is mediated by the hemagglutinin (HA) membrane glycoprotein. We have determined the crystal structures of the HA from the 1918 virus and two closely related HAs in complex with receptor analogs. They explain how the 1918 HA, while retaining receptor binding site amino acids characteristic of an avian precursor HA, is able to bind human receptors and how, as a consequence, the virus was able to spread in the human population.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gamblin, S J -- Haire, L F -- Russell, R J -- Stevens, D J -- Xiao, B -- Ha, Y -- Vasisht, N -- Steinhauer, D A -- Daniels, R S -- Elliot, A -- Wiley, D C -- Skehel, J J -- AI-13654/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2004 Mar 19;303(5665):1838-42. Epub 2004 Feb 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council (MRC) National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14764886" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Birds ; Crystallography, X-Ray ; Hemagglutinin Glycoproteins, Influenza Virus/*chemistry/*metabolism ; History, 20th Century ; Humans ; Hydrogen Bonding ; Influenza A virus/*immunology/metabolism/pathogenicity ; Influenza, Human/epidemiology/history/*virology ; Membrane Glycoproteins/chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Structure, Tertiary ; Receptors, Virus/*metabolism ; Sequence Alignment ; Sialic Acids/metabolism ; Species Specificity ; Swine
    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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    Gene targeting in stem cells from individuals with osteogenesis imperfecta (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-21
    Description: Adult stem cells offer the potential to treat many diseases through a combination of ex vivo genetic manipulation and autologous transplantation. Mesenchymal stem cells (MSCs, also referred to as marrow stromal cells) are adult stem cells that can be isolated as proliferating, adherent cells from bones. MSCs can differentiate into multiple cell types present in several tissues, including bone, fat, cartilage, and muscle, making them ideal candidates for a variety of cell-based therapies. Here, we have used adeno-associated virus vectors to disrupt dominant-negative mutant COL1A1 collagen genes in MSCs from individuals with the brittle bone disorder osteogenesis imperfecta, demonstrating successful gene targeting in adult human stem cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chamberlain, Joel R -- Schwarze, Ulrike -- Wang, Pei-Rong -- Hirata, Roli K -- Hankenson, Kurt D -- Pace, James M -- Underwood, Robert A -- Song, Kit M -- Sussman, Michael -- Byers, Peter H -- Russell, David W -- New York, N.Y. -- Science. 2004 Feb 20;303(5661):1198-201.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Washington, Seattle, WA 98195-7720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14976317" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Bone Marrow Cells/physiology ; Cell Differentiation ; Cells, Cultured ; Collagen Type I/chemistry/*genetics/metabolism ; Dependovirus/genetics ; *Gene Targeting ; Genetic Therapy ; Genetic Vectors ; Humans ; Kanamycin Kinase/genetics ; Male ; Mesenchymal Stromal Cells/*physiology ; Mice ; Osteogenesis ; Osteogenesis Imperfecta/*genetics/*therapy ; Point Mutation ; Recombination, Genetic ; Stem Cell Transplantation
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Evolution and development of sex differences in cooperative behavior in meerkats (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-13
    Description: In cooperatively breeding birds, where helpers of both sexes assist with the provisioning and upbringing of offspring who are not their own, males tend to contribute more than females to rearing young. This sex difference has been attributed to paternity uncertainty, but could also occur because males contribute more where they are likely to remain and breed in their group of origin. In contrast to most birds, female meerkats (Suricata suricatta) are more likely to breed in their natal group than males. We show that female meerkat helpers contribute more to rearing young than males and that female helpers feed female pups more frequently than males. Our results suggest that sex differences in cooperative behavior are generated by sex differences in philopatry and occur because females derive greater direct benefits than males from raising recruits to their natal group. These findings support the view that direct, mutualistic benefits are important in the evolution of specialized cooperative behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clutton-Brock, T H -- Russell, A F -- Sharpe, L L -- Young, A J -- Balmforth, Z -- McIlrath, G M -- New York, N.Y. -- Science. 2002 Jul 12;297(5579):253-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. thcb@hermes.cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12114627" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; *Behavior, Animal ; *Biological Evolution ; Body Weight ; Carnivora/*physiology ; *Cooperative Behavior ; Female ; Food ; Male ; *Sex Characteristics ; Social Behavior
    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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    Thermographic Inspection of Aerospace Tankage (2003)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: Thermography has been shown to be the ideal technical and economic inspection method for two applications - post-machining evaluations and for field inspections of damage and repair. For most manufacturing applications ultrasonic inspections are already available and established. There is no question about the detectability or cost when inspecting hardware out of the autoclave. But when the part is too large to bring to the scanning inspection system or you do not want to remove the hardware from its current setup then a more portable or field applicable inspection is required. This paper will describe two applications of thermography on composite inspections. The NASA NDE Team and Lockheed Martin conducted the work at NASA s George C. Marshall Space Flight Center (MSFC). The first application was inspecting machined hardware. The technique and example data will be presented along with the advantages of thermography. Examples of drilling holes and trimming the edges will be discussed. The second application will be the evaluation of damage in a composite part and the subsequent repair of the region will be presented. The technique, data, and benefits of this application will also be presented along with the follow-up inspection of the post- repaired hardware.
    Keywords: Instrumentation and Photography
    Type: American Society for Nondestructive Testing 12th Annual Research Symposium; Mar 01, 2003; Orlando, FL; United States
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