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  • Astrophysics  (56)
  • Female  (50)
  • Geophysics  (41)
  • Instrumentation and Photography  (37)
  • 2000-2004  (184)
  • 2002  (184)
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  • 2000-2004  (184)
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  • 1
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    No major schizophrenia locus detected on chromosome 1q in a large multicenter sample (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-27
    Description: Reports of substantial evidence for genetic linkage of schizophrenia to chromosome 1q were evaluated by genotyping 16 DNA markers across 107 centimorgans of this chromosome in a multicenter sample of 779 informative schizophrenia pedigrees. No significant evidence was observed for such linkage, nor for heterogeneity in allele sharing among the eight individual samples. Separate analyses of European-origin families, recessive models of inheritance, and families with larger numbers of affected cases also failed to produce significant evidence for linkage. If schizophrenia susceptibility genes are present on chromosome 1q, their population-wide genetic effects are likely to be small.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levinson, Douglas F -- Holmans, Peter A -- Laurent, Claudine -- Riley, Brien -- Pulver, Ann E -- Gejman, Pablo V -- Schwab, Sibylle G -- Williams, Nigel M -- Owen, Michael J -- Wildenauer, Dieter B -- Sanders, Alan R -- Nestadt, Gerald -- Mowry, Bryan J -- Wormley, Brandon -- Bauche, Stephanie -- Soubigou, Stephane -- Ribble, Robert -- Nertney, Deborah A -- Liang, Kung Yee -- Martinolich, Laura -- Maier, Wolfgang -- Norton, Nadine -- Williams, Hywel -- Albus, Margot -- Carpenter, Eric B -- DeMarchi, Nicola -- Ewen-White, Kelly R -- Walsh, Dermot -- Jay, Maurice -- Deleuze, Jean-Francois -- O'Neill, F Anthony -- Papadimitriou, George -- Weilbaecher, Ann -- Lerer, Bernard -- O'Donovan, Michael C -- Dikeos, Dimitris -- Silverman, Jeremy M -- Kendler, Kenneth S -- Mallet, Jacques -- Crowe, Raymond R -- Walters, Marilyn -- G9309834/Medical Research Council/United Kingdom -- G9810900/Medical Research Council/United Kingdom -- K24-MH64197/MH/NIMH NIH HHS/ -- KO2-01207/PHS HHS/ -- MH 41953/MH/NIMH NIH HHS/ -- MH 45390/MH/NIMH NIH HHS/ -- MH 52537/MH/NIMH NIH HHS/ -- MH61602/MH/NIMH NIH HHS/ -- R01-MH57314/MH/NIMH NIH HHS/ -- U01 MH46289/MH/NIMH NIH HHS/ -- U01 MH46318/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2002 Apr 26;296(5568):739-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104, USA. dfl@mail.med.upenn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11976456" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Alleles ; Australia ; Canada ; Chromosomes, Human, Pair 1/*genetics ; Europe ; Female ; Genes, Recessive ; *Genetic Linkage ; *Genetic Predisposition to Disease ; Genotype ; Humans ; Lod Score ; Male ; Microsatellite Repeats ; Pedigree ; Schizophrenia/ethnology/*genetics ; United States
    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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    Imaging interferometer using dual broadband quantum well infrared photodetectors (2002)
    In:  Other Sources
    Details
    Publication Date: 2018-06-08
    Description: The Jet Propulsion Laboratory is developing a new imaging interferometer that has double the efficiency of conventional interferometers and only a fraction of the mass and volume. The project is being funded as part of the Defense Advanced Research Projects Agency (DARPA) Photonic Wavelength And Spatial Signal Processing program (PWASSSP).
    Keywords: Instrumentation and Photography
    Type: QWIP 2002 Workshop; Torino; Italy
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  • 3
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    Dust impacts at Comet P/Borrelly (2002)
    In:  Other Sources
    Details
    Publication Date: 2018-06-08
    Keywords: Geophysics
    Type: European Geophysical Society; Nice; France
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  • 4
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    CHAMP Tracking and Accelerometer Data Analysis Results (2002)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: The CHAMP (Challenging Minisatellite Payload) mission's unique combination of sensors and orbit configuration will enable unprecedented improvements in modeling and understanding the Earth's static gravity field and its temporal variations. CHAMP is the first of two missions (GRACE (Gravity Recovery and Climate Experiment) to be launched in the later part of '01) that combine a new generation of GPS (Global Positioning System) receivers, a high precision three axis accelerometer, and star cameras for the precision attitude determination. In order to isolate the gravity signal for science investigations, it is necessary to perform a detailed reduction and analysis of the GPS and SLR tracking data in conjunction with the accelerometer and attitude data. Precision orbit determination based on the GPS and SLR (Satellite Laser Ranging) tracking data will isolate the orbit perturbations, while the accelerometer data will be used to distinguish the surface forces from those due to the geopotential (static, and time varying). In preparation for the CHAMP and GRACE missions, extensive modifications have been made to NASA/GSFC's GEODYN orbit determination software to enable the simultaneous reduction of spacecraft tracking (e.g. GPS and SLR), three axis accelerometer and precise attitude data. Several weeks of CHAMP tracking and accelerometer data have been analyzed and the results will be presented. Precision orbit determination analysis based on tracking data alone in addition to results based on the simultaneous reduction of tracking and accelerometer data will be discussed. Results from a calibration of the accelerometer will be presented along with the results from various orbit determination strategies. Gravity field modeling status and plans will be discussed.
    Keywords: Geophysics
    Type: 1st CHAMP Science Meeting; Jan 22, 2002 - Jan 25, 2002; Potsdam; Germany
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  • 5
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    An Assessment of Gravity Recovery with CHAMP Data (2002)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: The CHAMP mission, launched in July 2000, is the first in the series of mapping missions for the Earth's geopotential scheduled for the first decade of the new millenium. Its unique contributions compared to all the previous generation of satellites whose data have been included in Earth geopotential models are the precision global tracking with GPS data, and the availability of precision accelerometry data to model the nonconservative forces. Over the past year we have implemented extensive modifications to our GEODYN orbit determination processing code and ancillary data preprocessors to process the GPS and accelerometry data from missions such as CHAMP and GRACE. We report on the analysis of up to 60 days of CHAMP data and how these data contribute to Earth geopotential solutions where the base model is a derivative of EGM96. Preliminary results with only 12.5 days of data processed clearly show the ability of the CHAMP data to improve the modeling of the zonals (1=10 to 40), the m-dailies, the primary resonance terms, and the sectoral harmonics. We will detail the results of our calibrations of the CHAMP accelerometry and assess the quality of test solutions that include these CHAMP data.
    Keywords: Geophysics
    Type: European Geophysical Society (EGS) XXVII General Assembly; Apr 21, 2002 - Apr 26, 2002; Nice; France
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  • 6
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    Generation of an LFA-1 antagonist by the transfer of the ICAM-1 immunoregulatory epitope to a small molecule (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-09
    Description: The protein-protein interaction between leukocyte functional antigen-1 (LFA-1) and intercellular adhesion molecule-1 (ICAM-1) is critical to lymphocyte and immune system function. Here, we report on the transfer of the contiguous, nonlinear epitope of ICAM-1, responsible for its association with LFA-1, to a small-molecule framework. These LFA-1 antagonists bound LFA-1, blocked binding of ICAM-1, and inhibited a mixed lymphocyte reaction (MLR) with potency significantly greater than that of cyclosporine A. Furthermore, in comparison to an antibody to LFA-1, they exhibited significant anti-inflammatory effects in vivo. These results demonstrate the utility of small-molecule mimics of nonlinear protein epitopes and the protein epitopes themselves as leads in the identification of novel pharmaceutical agents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gadek, T R -- Burdick, D J -- McDowell, R S -- Stanley, M S -- Marsters, J C Jr -- Paris, K J -- Oare, D A -- Reynolds, M E -- Ladner, C -- Zioncheck, K A -- Lee, W P -- Gribling, P -- Dennis, M S -- Skelton, N J -- Tumas, D B -- Clark, K R -- Keating, S M -- Beresini, M H -- Tilley, J W -- Presta, L G -- Bodary, S C -- New York, N.Y. -- Science. 2002 Feb 8;295(5557):1086-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bioorganic Chemistry, Genentech, One DNA Way, South San Francisco, CA 94080, USA. trg@gene.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11834839" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Anti-Inflammatory Agents, Non-Steroidal/chemical ; synthesis/chemistry/metabolism/pharmacology ; Cyclosporine/pharmacology ; Dermatitis, Irritant/drug therapy ; Dinitrofluorobenzene ; Drug Design ; Enzyme-Linked Immunosorbent Assay ; Epitopes ; Female ; Humans ; Immunoglobulin Fab Fragments/immunology/pharmacology ; Immunosuppressive Agents/chemical synthesis/chemistry/metabolism/*pharmacology ; Intercellular Adhesion Molecule-1/chemistry/*immunology/*metabolism ; Lymphocyte Culture Test, Mixed ; Lymphocyte Function-Associated Antigen-1/immunology/*metabolism ; Mice ; Mice, Inbred BALB C ; Molecular Mimicry ; Mutagenesis ; Protein Structure, Secondary ; Structure-Activity Relationship ; Thiophenes/*chemical synthesis/chemistry/metabolism/*pharmacology ; beta-Alanine/analogs & derivatives/*chemical ; synthesis/chemistry/metabolism/*pharmacology
    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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    Production of alpha 1,3-galactosyltransferase-deficient pigs (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-21
    Description: The enzyme alpha1,3-galactosyltransferase (alpha1,3GT or GGTA1) synthesizes alpha1,3-galactose (alpha1,3Gal) epitopes (Galalpha1,3Galbeta1,4GlcNAc-R), which are the major xenoantigens causing hyperacute rejection in pig-to-human xenotransplantation. Complete removal of alpha1,3Gal from pig organs is the critical step toward the success of xenotransplantation. We reported earlier the targeted disruption of one allele of the alpha1,3GT gene in cloned pigs. A selection procedure based on a bacterial toxin was used to select for cells in which the second allele of the gene was knocked out. Sequencing analysis demonstrated that knockout of the second allele of the alpha1,3GT gene was caused by a T-to-G single point mutation at the second base of exon 9, which resulted in inactivation of the alpha1,3GT protein. Four healthy alpha1,3GT double-knockout female piglets were produced by three consecutive rounds of cloning. The piglets carrying a point mutation in the alpha1,3GT gene hold significant value, as they would allow production of alpha1,3Gal-deficient pigs free of antibiotic-resistance genes and thus have the potential to make a safer product for human use.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3154759/" 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/PMC3154759/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phelps, Carol J -- Koike, Chihiro -- Vaught, Todd D -- Boone, Jeremy -- Wells, Kevin D -- Chen, Shu-Hung -- Ball, Suyapa -- Specht, Susan M -- Polejaeva, Irina A -- Monahan, Jeff A -- Jobst, Pete M -- Sharma, Sugandha B -- Lamborn, Ashley E -- Garst, Amy S -- Moore, Marilyn -- Demetris, Anthony J -- Rudert, William A -- Bottino, Rita -- Bertera, Suzanne -- Trucco, Massimo -- Starzl, Thomas E -- Dai, Yifan -- Ayares, David L -- DK29961/DK/NIDDK NIH HHS/ -- R01 AM007772/AM/NIADDK NIH HHS/ -- R01 DK029961-19/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2003 Jan 17;299(5605):411-4. Epub 2002 Dec 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉PPL Therapeutics Inc., 1700 Kraft Drive, Blacksburg, VA 24060, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12493821" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Bacterial Toxins/pharmacology ; Cell Line ; Cloning, Molecular ; Cloning, Organism ; DNA, Complementary ; Embryo Transfer ; Enterotoxins/pharmacology ; Female ; Fibroblasts ; Galactosyltransferases/*deficiency/*genetics ; *Gene Targeting ; Genetic Vectors ; HeLa Cells ; Humans ; Immunoglobulin M/blood ; Islets of Langerhans Transplantation ; Mice ; Mice, Knockout ; *Point Mutation ; Pregnancy ; Swine/*genetics ; Transfection ; Transplantation, Heterologous ; Trisaccharides/*analysis/biosynthesis/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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  • 8
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    Tidal Models In A New Era of Satellite Gravimetry (2002)
    In:  CASI
    Details
    Publication Date: 2013-08-29
    Description: The high precision gravity measurements to be made by recently launched (and recently approved) satellites place new demands on models of Earth, atmospheric, and oceanic tides. The latter is the most problematic. The ocean tides induce variations in the Earth's geoid by amounts that far exceed the new satellite sensitivities, and tidal models must be used to correct for this. Two methods are used here to determine the standard errors in current ocean tide models. At long wavelengths these errors exceed the sensitivity of the GRACE mission. Tidal errors will not prevent the new satellite missions from improving our knowledge of the geopotential by orders of magnitude, but the errors may well contaminate GRACE estimates of temporal variations in gravity. Solar tides are especially problematic because of their long alias periods. The satellite data may be used to improve tidal models once a sufficiently long time series is obtained. Improvements in the long-wavelength components of lunar tides are especially promising.
    Keywords: Geophysics
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  • 9
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    Laboratory Studies of the Optical Properties and Condensation Processes of Cosmic Dust Grains (2002)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: A laboratory facility for conducting a variety of experiments on single isolated dust particles of astrophysical interest levitated in an electrodynamics balance has been developed at NASA/Marshall Space Flight Center. The objective of the research is to employ this experimental technique for studies of the physical and optical properties of individual cosmic dust grains of 0.1-100 micron size in controlled pressure/temperatures environments simulating astrophysical conditions. The physical and optical properties of the analogs of interstellar and interplanetary dust grains of known composition and size distribution will be investigated by this facility. In particular, we will carry out three classes of experiments to study the micro-physics of cosmic dust grains. (1) Charge characteristics of micron size single dust grains to determine the photoelectric efficiencies, yields, and equilibrium potentials when exposed to UV radiation. (2) Infrared optical properties of dust particles (extinction coefficients and scattering phase functions) in the 1-30 micron region using infrared diode lasers and measuring the scattered radiation. (3) Condensation experiments to investigate the condensation of volatile gases on colder nucleated particles in dense interstellar clouds and lower planetary atmospheres. The condensation experiments will involve levitated nucleus dust grains of known composition and initial mass (or m/q ratio), cooled to a temperature and pressure (or scaled pressure) simulating the astrophysical conditions, and injection of a volatile gas at a higher temperature from a controlled port. The increase in the mass due to condensation on the particle will be monitored as a function of the dust particle temperature and the partial pressure of the injected volatile gas. The measured data will permit determination of the sticking coefficients of volatile gases and growth rates of dust particles of astrophysical interest. Some preliminary results based on measurements of photoelectric emission and radiation pressure on single isolated 0.2 to 6.6 micron size silica particles exposed to UV radiation at 120-200 nm and green laser light at 532 nm are presented.
    Keywords: Astrophysics
    Type: Proceedings of the NASA Laboratory Astrophysics Workshop; 180-184; NASA/CP-2002-211863
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  • 10
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    Measurements of Oxygenated Organic Chemicals In the Pacific Troposphere During TRACE-P: Higher Aldehydes (less than C(sub 1)), Their Sources, and Potential Role In Atmospheric Oxidation (2002)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: Airborne measurements of a large number of oxygenated organics were carried out in the Pacific troposphere (to 12 km) in the Spring of 2001 (Feb. 24-April 10). Specifically these measurements included acetaldehyde, propanaldehyde, acetone, methylethyl ketone, methanol, ethanol, PAM and organic nitrates. Independent measurements of formaldehyde, peroxides, and tracers were also available. Highly polluted as well as pristine air masses were sampled. Oxygenated organics were abundant in the clean In troposphere and were greatly enhanced in the outflow regions from Asia. Extremely high concentrations of aldehydes could be measured in the troposphere. It is not possible to explain the large abundances of aldehydes in the background troposphere without invoking significant oceanic sources. A strong correlation between the observed mixing ratios of formaldehyde and acetaldehyde is present. We infer that higher aldehydes (such as acetaldehyde and propanaldehyde) may provide a large source of formaldehyde and sequester Cox throughout the troposphere. The atmospheric behavior of acetone, methylethyl ketone, and methanol is generally indicative of their common terrestrial sources with a Image contribution from biomass/biofuel burning. A vast body of data has been collected and it is being analyzed both statistically and with the help of models to better understand the role that oxygenated organics play in the atmosphere and to unravel their sources and sinks. These results will be presented.
    Keywords: Geophysics
    Type: 7th Scientific Conference of the International Global Atmospheric Chemistry Project; Sep 18, 2002 - Sep 25, 2002; Crete; Greece
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