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  • 1
    Electronic Resource
    Electronic Resource
    Microvelocity sensor for instantaneous velocity determination (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 3692-3697 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new microvelocity sensor unit was developed to measure the instantaneous velocity of a high velocity impactor during the penetration process. The concept of this device is based on the induced current generated in a coil due to the passage of a magnet. A special digital circuit was designed to yield a spatial resolution of better than 0.05 in. by eliminating the problem of signal overlap. The precise time delays obtained from these signals can be used to determine the slowing down or energy loss of a high-velocity projectile. The details of this sensor unit will be described and its resolution will be demonstrated. A light gas gun was used to propel aluminum projectiles to velocities up to 320 m/s. Energy loss of these high-velocity projectiles in composites reinforced with polyethylene, polyester, and graphite fabrics as well as pure Kevlar fabric was measured using this system. Results show that this microvelocity sensor is capable of identifying various energy-loss processes during the impact of high-velocity projectiles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140476
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  • 2
    Electronic Resource
    Electronic Resource
    Polarization and dipole moments of Co-doped potassium sodium strontium barium niobate crystals (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 82 (1997), S. 4465-4468 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Single crystals of potassium sodium strontium barium niobate (KNSBN) and cobalt-modified KNSBN were prepared using the Czochralski technique. The ferroelectric hysteresis loops and the infrared reflectivity spectra were collected. Compared with the undoped KNSBN crystals, the cobalt-modified crystals have stable hysteresis loops, whose spontaneous polarization is about 0.17 C/m2 and coercive field strength is about 670 V/mm, but those of the undoped KNSBN crystals are about 0.04 C/m2 and 530 V/mm, respectively. The measured infrared reflectivities vary with the orientations of the dipole moments owing to the Co doping. The c axis becomes the most stable orientation of the dipole moments, and the polarization can be locked and does not recede when the cobalt-modified crystals are polarized into a single domain. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.366178
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  • 3
    Electronic Resource
    Electronic Resource
    Energy state of Nd3+ doped in barium sodium niobate crystals (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 2560-2562 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nd-doped barium sodium niobate (Ba2Na)1−xNdxNb5O15 (BNN:Nd), with x=0.025 and a Curie temperature of 537±2 °C, crystallizes with a filled tungsten bronze-type structure in the tetragonal system. The lattice constants are a=b=1.2446(1) and c=0.3991(1) nm at room temperature. There are two formulas per unit cell. The five typical deep energy levels, formed by the Nd3+ ions doped in the A1 and A2 sites, are 2.36, 2.12, 1.68, 1.55, and 1.43 eV. Investigating the green and yellow second-harmonic generation shows that the BNN:Nd crystal can be expected as a useful material for the green, especially for the yellow laser radiation at room temperature. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.367016
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  • 4
    Electronic Resource
    Electronic Resource
    A competitive enzyme immunoassay for the direct determination of mometasone furoate (SCH 32088) in human plasma
    Amsterdam : Elsevier
    Journal of Pharmaceutical and Biomedical Analysis 10 (1992), S. 473-479 
    Details
    ISSN: 0731-7085
    Keywords: Enzyme immunoassay ; anti-inflammatory steroid ; clinical analysis. ; drug analysis ; mometasone furoate
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0731-7085(92)80067-W
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  • 5
    Electronic Resource
    Electronic Resource
    A sensitive enzyme immunoassay (EIA) for quantitation of the topical anti-inflammatory agent SCH 40120 in unextracted human plasma
    Amsterdam : Elsevier
    Journal of Pharmaceutical and Biomedical Analysis 11 (1993), S. 871-879 
    Details
    ISSN: 0731-7085
    Keywords: 5-lipoxygenase inhibitor ; SCH 40120 ; clinical analysis. ; drug analysis ; enzyme immunoassay ; topical anti-inflammatory agent
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0731-7085(93)80043-Z
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  • 6
    Electronic Resource
    Electronic Resource
    Diffuse cavity formation in soft rot of pine (1994)
    Springer
    Wood science and technology 28 (1994), S. 199-208 
    Details
    ISSN: 1432-5225
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary A new type of soft rot of southern pine longitudinal tracheids is described. In this type, soft-rot cavities form by diffuse degradation of the S2 cell wall layer by hyphae growing within the cell wall. Cavity formation is diffuse and irregular as opposed to the restricted, periodic cavity formation typical of type 1 soft rot. Proboscis hyphae are small (diameter 0.6 to 0.9 μm) and rapidly autolyse. These proboscis hyphae are not easily recognizable with light microscopy, especially at later stages of decay, but require transmission electron microscopy to confirm their presence. This may be an alternative interpretation of the type 2 soft rot of softwoods described previously as being caused by lumenal hyphae through an intact S3. Chemical analysis of pine test blocks revealed a greater loss of glucose and an increase of galactose with diffuse type 1 species compared to typical type 1 soft rot species. The term “diffuse type 1” is suggested to describe this soft rot.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00193328
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  • 7
    Electronic Resource
    Electronic Resource
    The pachytene chromosomes of maize as revealed by fluorescence in situ hybridization with repetitive DNA sequences (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 30-36 
    Details
    ISSN: 1432-2242
    Keywords: Key words Zea mays ; Pachytene chromosome ; Karyotype ; Repetitive DNA sequence ; Fluorescence in situ hybridization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A repetitive DNA sequence, ZmCR2.6c, was isolated from maize based on centromeric sequence CCS1 of the wild grass Brachypodium sylvaticum. ZmCR2.6c is 309 bp in length and shares 65% homology to bases 421–721 of the sorghum centromeric sequence pSau3A9. Fluorescence in situ hybridization (FISH) localized ZmCR2.6c to the primary constrictions of pachytene bivalents and to the stretched regions of MI/AI chromosomes, indicating that ZmCR2.6c is an important part of the centromere. Based on measurements of chromosome lengths and the positions of FISH signals of several cells, a pachytene karyotype was constructed for maize inbred line KYS. The karyotype agrees well with those derived from traditional analyses. Four classes of tandemly repeated sequences were mapped to the karyotype by FISH. Repeats 180 bp long are present in cytologically detectable knobs on 5L, 6S, 6L, 7L, and 9S, as well as at the termini and in the interstitial regions of many chromosomes not reported previously. A most interesting finding is the presence of 180-bp repeats in the NOR-secondary constriction. TR-1 elements co-exist with 180-bp repeats in the knob on 6S and form alone a small cluster in 4L. 26S and 5S rRNA genes are located in the NOR and at 2L.88, respectively. The combination of chromosome length, centromere position, and distribution of the tandem repeats allows all chromosomes to be identified unambiguously. The results presented form an important basis for using FISH for physical mapping and for investigating genome organization in maize.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051445
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  • 8
    Electronic Resource
    Electronic Resource
    Structure of 3,3-di(o-tolyl)phthalide (1980)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 36 (1980), S. 1956-1958 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567740880007637
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  • 9
    Electronic Resource
    Electronic Resource
    A facile synthesis of an aldehydic analog of platelet activating factor and its use in the production of specific antibodies
    Amsterdam : Elsevier
    Chemistry and Physics of Lipids 55 (1990), S. 265-273 
    Details
    ISSN: 0009-3084
    Keywords: PAF ; antibodies ; radioimmunoassay
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-3084(90)90164-M
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  • 10
    Electronic Resource
    Electronic Resource
    Concurrent and vectorized Monte Carlo simulation of the evolution of an assembly of particles increasing in number
    Amsterdam : Elsevier
    Computer Physics Communications 58 (1990), S. 63-70 
    Details
    ISSN: 0010-4655
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Computer Science , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0010-4655(90)90135-N
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