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  • 1
    Electronic Resource
    Electronic Resource
    Solid state polymerization of cyanoacetylene into conjugated linear chains under pressure (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 778-782 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Cyanoacetylene underwent polymerization reaction in a solid phase at pressures above 1.5 GPa. The Raman study of the reaction product showed that the polymer had a conjugated linear backbone with CN pendant groups. The Raman spectra for this substituted polyacetylene demonstrated a resonance behavior similar to that reported for trans-polyacetylene. The optical gap associated with the π–π* transition in the conjugated system was smaller than that of trans-polyacetylene, probably due to the resonance interactions between the CN triple bonds and the conjugated double bonds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.457130
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  • 2
    Electronic Resource
    Electronic Resource
    Raman study of the solid-state polymerization of acetylene at high pressure (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 89 (1988), S. 529-534 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The mechanism and kinetics of the pressure-induced polymerization of acetylene were studied by Raman spectroscopy. The polymerization reaction occurred in the orthorhombic phase at room temperature and pressures above 3.5 GPa. Dominant formation of trans-polyacetylene suggested that the monomer underwent trans opening of the triple bond and polymerized along the diagonal of the bc plane of the unit cell. The reaction was described as an idealized one-step and one-dimensional growth process by an Avrami equation with an exponent 1.34.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455441
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  • 3
    Electronic Resource
    Electronic Resource
    High-pressure Raman study of liquid and crystalline C2H2 (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 88 (1988), S. 4565-4568 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Raman spectra were measured for liquid (0–0.7 GPa), crystalline cubic (0.7–0.9 GPa), and orthorhombic (0.9–3.5 GPa) phases in C2H2 at room temperature. For the orthorhombic phase, the high-pressure behavior of the librational and internal vibrations was obtained in a wide pressure range. The frequencies of all the librational modes increased monotonically with pressure, while those of the internal modes showed a variety of frequency shifts depending on vibrational mode. These high-pressure data will be of great use for the construction of theoretical models for the intermolecular interactions in crystalline C2H2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.453768
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  • 4
    Electronic Resource
    Electronic Resource
    High-pressure Raman study of a one-dimensional hydrogen-bonded crystal of cyanoacetylene (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 2814-2817 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: At room temperature, cyanoacetylene undergoes a liquid–solid transition at 70±30 MPa and further a polymerization reaction at 1.5 GPa. Raman spectra indicates that the crystal structure of the high-pressure phase is isomorphic with the monoclinic low-temperature structure (P21/m, Z=2), in which linear cyanoacetylene molecules are joined with CH NC hydrogen bonds to form infinite one-dimensional chains. The internal stretching frequency of the C–H proton donor decreases wtih increasing pressure, while that of the C 3/4 N proton acceptor increases. The librational modes associated with the rotational motions of the rigid molecules show large shifts to higher frequencies with pressure. The observed frequency shifts are attributed to the strengthening of the CH⋅⋅⋅NC hydrogen bond in the one-dimensional molecular chain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.456950
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  • 5
    Electronic Resource
    Electronic Resource
    Recent Advances in the Molecular Biology of HTLV-1: Trans-Activation of Viral and Cellular Genes (1987)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Immunology 5 (1987), S. 541-557 
    Details
    ISSN: 0732-0582
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.iy.05.040187.002545
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  • 6
    Electronic Resource
    Electronic Resource
    The dopaminergic innervation as observed by immunohistochemistry using anti-dopamine serum in the rat cerebral cortex (1988)
    Springer
    Cellular and molecular life sciences 44 (1988), S. 700-702 
    Details
    ISSN: 1420-9071
    Keywords: Dopamine ; cerebral neocortex ; immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary By using an antiserum raised against dopamine bound to bovine serum albumin, thinner dopamine-labeled nerve terminals were visualized immunohistochemically within neocortical areas, in addition to well-documented dopaminergic innervation into the prefrontal and limbic cortices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01941033
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  • 7
    Electronic Resource
    Electronic Resource
    Carnosine-like immunoreactivity in the primary olfactory neuron of the rat (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 298-300 
    Details
    ISSN: 1420-9071
    Keywords: Carnosine ; neurotransmitter ; olfactory bulb ; primary olfactory neuron ; immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Using the peroxidase-antiperoxidase immunohistochemical technique, carnosine-like immunoreactivity was demonstrated to localize specifically within the primary olfactory neuron.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01945557
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  • 8
    Electronic Resource
    Electronic Resource
    Molecular gene mapping of human aldolase A (ALDOA) gene to chromosome 16 (1987)
    Springer
    Human genetics 〈Berlin〉 76 (1987), S. 20-26 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Mapping of human aldolase A (ALDOA) gene was performed by molecular hybridization techniques using a panel of human-mouse cell hybrids and sorted fractions of human metaphase chromosomes besides in situ hybridization. For the purpose, three kinds of DNA probes derived from the coding region (probe-1), the 3′ noncoding region (probe-2), and the coding and 3′ noncoding regions (probe-3) of human aldolase A cDNA clone, pHAAL116-3, were selectively employed. The results of RNA and DNA blot analyses indicated that the human ALDOA gene is located on chromosome 16. The in situ hybridization experiment also indicated that the ALDOA gene was localized to 16q22–q24.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00283044
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  • 9
    Electronic Resource
    Electronic Resource
    Formation of monodisperse poly(1-methacryloxybenzotriazole) particles by radiation-induced dispersion polymerization (1989)
    Springer
    Colloid & polymer science 267 (1989), S. 986-991 
    Details
    ISSN: 1435-1536
    Keywords: Radiation-inducedpolymerization ; dispersionpolymerization ; polymerparticles ; 1-methacryloxybenzotriazole ; activebenzotriazolegroups
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Radiation-induced dispersion polymerization of 1-methacryloxybenzotriazole (MABt) in ethyl propionate starts as homogeneous mixture and the resulting polymer precipitates as spherical particles. Formation, size, and shape of polymer particles are strongly dependent on the initial monomer concentration. Three regions can be distinguished: formation of deformed particles at concentrations of ≦15 w/v-% MABt; formation of spherical particles at concentrations from 18 to 35 w/v-% MABt; no precipitation of polymer at concentrations of ≧ 40 w/v-% MABt. The spherical particles at 20 w/v-% MABt had a diameter of 0.54 ± 0.31 μm for 3 kGy irradiation and 2.93±0.68 μm for 30 kGy. The number distribution of the microspheres shows that the spherical particles with small sizes formed at low irradiation dose (low conversion) disappears with increasing irradiation dose because of multi-coating by newly produced polymer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410159
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  • 10
    Electronic Resource
    Electronic Resource
    New functional microspheres with active succinimide groups (1987)
    Springer
    Colloid & polymer science 265 (1987), S. 916-921 
    Details
    ISSN: 1435-1536
    Keywords: Radiation-inducedpolymerization ; ethyl propionate ; N-methacryloxysuccinimide ; activesuccinimide group ; ethylene glycol dimethacrylate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Radiation-induced polymerization of monomers, for example N-methacryl-oxysuccinimide (MASu) and diethylene glycol dimethacrylate (2G), in ethyl propionate, was performed from +25°C to −78°C. The copoly (MASu/2G) microspheres were obtained in MASu monomer compositions of 30 wt % or below. The average particle diameter of copoly(MASu/2G, 20/80 wt %) microspheres obtained at irradiation temperatures of 25°, 0°, and −43 °C were 0.81±0.29, 0.63±0.26, and 0.90±0.43 μm, respectively. No microspheres were formed when irradiated at −78 °C. The reactivity of the succinimide groups on the surface of copoly(MASu/2G, 20/80 wt%) microspheres was checked by reacting with ethylene diamine. The maximal amount of reacting succinimide groups was 9.4±0.5 μnol/g, which corresponds to about 1 % of the total number of succinimide groups in the microsphere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01421822
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