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  • 1
    Electronic Resource
    Electronic Resource
    Anomalous rearrangement in the hydrolysis of diazotized syn-4-amino[2.2](1,4)naphthalenoparacyclophane (1984)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 106 (1984), S. 6115-6117 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00332a079
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  • 2
    Electronic Resource
    Electronic Resource
    Cloning and expression of the chicken immunoglobulin joining (J)-chain cDNA (2000)
    Springer
    Immunogenetics 51 (2000), S. 85-91 
    Details
    ISSN: 1432-1211
    Keywords: Key words J chain ; Polymeric immunoglobulin ; Ontogeny ; Evolution ; Comparative immunology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  The J chain is a component of polymeric immunoglobulin (Ig) molecules and may play an important role in their polymerization and the transport of polymeric Ig across epithelial cells. In this study, the primary structure of the chicken J chain was determined by sequencing cDNA clones. The cDNA had an open reading frame of 476 nucleotides encoding a putative protein of 158 amino acid residues including the signal sequence. The 3′ untranslated region consisted of 1216 nucleotides and a poly(A) tail. The deduced amino acid sequence of the chicken J chain had a high degree of homology to that of human, cow, rabbit, mouse, frog, and earthworm, with eight conserved Cys residues identical to the mammalian J chains. Northern blot hybridization performed with total RNA from various chicken tissues revealed high levels of J-chain mRNA expression in spleen, intestine, Harderian gland, and bursa of Fabricius, and low levels in the thymus. The J chain was expressed in the bursa as early as day 15 of embryogenesis. These data indicated that the chicken J-chain gene displays a high degree of homology with that of other species, and is expressed at an early stage of development of the chicken immune system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002510050016
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  • 3
    Electronic Resource
    Electronic Resource
    Laser Truing and Dressing of Small Vitrified CBN Grinding Wheel (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 329 (Jan. 2007), p. 163-168 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper aims at the development of an alterative technique for truing and dressing asmall vitrified CBN grinding wheel used for the internal finishing of small holes measuring severalmillimeters in diameter. In conventional truing and dressing, a single-tip diamond dresser or a rotaryGC cup wheel dresser is employed. This levels off the improvement in the wheel truing accuracybecause the stiffness of the grinding wheel shaft with an open-sided structure is low, and the shaft isthus deformed easily due to the truing force. In the present work, a new truing and dressing techniqueis proposed in which a Nd:YAG laser beam is employed as the dresser. Experiments were carried outwith respect to the effects of the laser beam conditions (amplitude, width and frequency of pulse, andfocus offset) and the relative motion between the laser beam and CBN wheel. It was found that therun-out of the CBN wheel was decreased significantly, and the wheel surface condition was improvedgreatly after laser truing and dressing
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.329.163.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Active recombinant C3a of human anaphylatoxin produced in Escherichia coli
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 175 (1991), S. 1131-1138 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0006-291X(91)91683-4
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  • 5
    Electronic Resource
    Electronic Resource
    Semi-empirical method for estimating the β-strength function
    Amsterdam : Elsevier
    Nuclear Physics, Section A 395 (1983), S. 235-247 
    Details
    ISSN: 0375-9474
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0375-9474(83)90098-2
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  • 6
    Electronic Resource
    Electronic Resource
    Empirical mass formula with proton-neutron interaction
    Amsterdam : Elsevier
    Atomic Data and Nuclear Data Tables 39 (1988), S. 251-258 
    Details
    ISSN: 0092-640X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0092-640X(88)90026-5
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  • 7
    Electronic Resource
    Electronic Resource
    Surface gelation of ovalbumin monolayers at the air-water interface
    Amsterdam : Elsevier
    BBA - Biochimica et Biophysica Acta 24 (1957), S. 174-177 
    Details
    ISSN: 0006-3002
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0006-3002(57)90160-9
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  • 8
    Electronic Resource
    Electronic Resource
    Palaeomagnetism and chronology of the central Taupo Volcanic Zone, New Zealand (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 124 (1996), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The central Taupo Volcanic Zone (TVZ) of New Zealand is a region of intense Quaternary silicic volcanism, active since 1.6 Ma. We report palaeomagnetic measurements from 59 distinct volcanic units sampled at 98 sites in the TVZ. These are mainly rhyolitic ignimbrites and lava domes, with a few basaltic, andesitic, and dacitic lavas. Most have new K/Ar or 40Ar/39 Ar ages. The remanent magnetizations are generally stable to both thermal and alternating-field demagnetization, and well-determined mean palaeodirections were obtained for all sites.Our findings suggest that the Taupo, Whakamaru, Maroa, Reporoa, Rotorua, and Okataina volcanic centres were magnetized during the Brunhes normal chron. Kapenga is an older volcanic centre, where activity commenced around 0.89 Ma and extended into the Brunhes. Mangakino volcanic centre is significantly older and was active from 1.6 to 0.95 Ma.Transitional or intermediate palaeodirections were obtained from Ahuroa ignimbrite (1.18 ± 0.02 Ma) and Mamaku ignimbrite (0.22 ± 0.01 Ma). The former almost certainly corresponds to the Cobb Mountain Event. The latter is significantly older than the Blake Event, and probably corresponds to the recently reported Pringle Falls/Summer Lake magnetic episode.Multiple sites from the Whakamaru ignimbrite have indistinguishable 40Ar/39 Ar ages (0.33 ± 0.01 Ma) and glass composition, but divergent palaeomagnetic directions. This contrast suggests that either (1) the different sites were formed during a phase of extremely violent activity, lasting up to a few hundred years, during which geomagnetic secular variation was recorded; or (2) that they were formed in a single eruption, and rotation during subsequent extensional tectonism has caused divergence of the palaeodirections. 40Ar/39Ar ages of 0.77 ± 0.03 Ma for the reversely magnetized Rahopeka ignimbrite and 0.71 ± 0.06 Ma for the overlying normally magnetized Waiotapu ignimbrite bracket and constrain the age of the Maluyama-Brunhes transition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1996.tb05645.x
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of surface hydrogen on metal-diamond interface properties (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 835-842 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Schottky barrier formation of metal contacts deposited on diamond (111) and (100) surfaces was investigated. Three different metals (Au, Al, and Ti) were studied because of their different chemical reactivity with C, i.e., Au being a nonreactive metal, Al a weak carbide-forming metal, and Ti a strong carbide former. Both fully H-terminated, unreconstruted (1×1) surfaces and H-desorbed, reconstructed (2×2)/(2×1) surfaces with higher density of surface states were examined. Surface structures were determined via low-energy electron diffraction, and the change of surface band bending (SBB) and the interface chemistry during the contact formation were monitored using x-ray photoelectron spectroscopy. On the reconstructed surfaces, the SBB was independent of metal thicknesses. This was attributed primarily to Fermi-level pinning by the high density of surface states on the reconstructed surfaces. On the other hand, the surface-state densities were much lower on the unreconstructed surfaces and thus the Fermi level was not as strongly pinned as that on the reconstructed surfaces. When the metal coverage became large ((approximately-greater-than)0.5 monolayer) on these unreconstructed surfaces, the charge transferred from the metal contacts to the diamond, the Fermi level moved upward in the band gap and the SBB increased. However, even on the unreconstructed surfaces where the density of pinning states were low, the SBB for thick metal contacts did not correlate to metal properties such as work function and/or electronegativity. Regardless of the state of the diamond surfaces, it was also important to consider the interface chemistry (chemical reactivity of the metal on diamond) to understand the change of the SBB after annealing the metal contacts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353322
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  • 10
    Electronic Resource
    Electronic Resource
    Effects of argon presputtering on the formation of aluminum contacts on polycrystalline diamond (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 5912-5918 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The results of in vacuo x-ray photoelectron spectroscopy and Auger electron spectroscopy of Al-diamond interfaces for Al overlayer thicknesses up to 10 A(ring) are presented. Postdeposition annealing effects up to 430 °C are also discussed. Ex situ current-voltage (I-V) measurements were also made on thick (∼1500 A(ring)) Al contacts on diamonds. The as-grown diamond surface, on which Al was a rectifying contact, did not chemically interact with Al, even after annealing. An Ar+-sputtered diamond surface, on the other hand, did react with Al to form Al—C bonds upon annealing at temperatures as low as 430 °C. Al on the sputtered surface resulted in an ohmic contact. The distortion of the diamond network and formation of vacancies and unsatisfied bonds via Ar+ sputtering of the diamond surface change the I-V characteristics of the Al contact and also facilitate the solid state interdiffusion of Al and C as well as interface reactions at elevated temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.351899
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