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  • 1
    Electronic Resource
    Electronic Resource
    Early Viral Proteins As Autoantigens (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 540 (1988), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1988.tb27206.x
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  • 2
    Electronic Resource
    Electronic Resource
    Book reviews (1988)
    Springer
    Colloid & polymer science 266 (1988), S. 97-99 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01451537
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  • 3
    Electronic Resource
    Electronic Resource
    Assignment of UV-absorption maxima of degraded PVC (1985)
    Springer
    Polymer bulletin 14 (1985), S. 39-43 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary UV-spectra of degraded PVC are put together in a complicated but surveyable way by superposition and deletion of the a-, b-, c-, and d-absorptions of individual polyenes. The existing conception according to which all maxima are based on the most intensive longest-wave d-absorption of a definite polyene sequence could not be confirmed. It has been established that all spectra are showing clearly two additional maxima resulting from a superposition of other polyene absorptions. Thus, counting all maxima for d-absorptions, in the literature a wrong assignment of the UV-maxima to the individual polyenes is reported. Furtheron, it is shown that the frequency distribution of the polyene sequence length is not influenced by the extent of PVC-degradation, but is mainly depending on the degradation temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00254913
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  • 4
    Electronic Resource
    Electronic Resource
    Relationship between directed visual attention and saccadic reaction times (1988)
    Springer
    Experimental brain research 73 (1988), S. 546-552 
    Details
    ISSN: 1432-1106
    Keywords: Attention ; Fixation ; Saccades ; Saccadic reaction times
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Saslow (1967) and Fischer and Ramsperger (1984) found that saccadic reaction time (SRT) depends on the interval between the fixation point offset and the target onset. Using a continuously visible fixation point, we asked whether a similar function would be obtained if subjects attended to a peripherally viewed point extinguished at variable intervals before or after the target onset. The interval was varied between -500ms (i.e., attention stimulus offset after saccade target onset = overlap trials) and 500ms (i.e., attention stimulus offset before saccade target onset = gap trials). The results show a constant mean SRT of about 240 ms for overlap trials, and a U-shaped function with a minimum of 140 ms, at a gap duration of 200 ms, for gap trials. These findings suggest that saccadic latencies do not depend on the cessation of fixation per se, but rather on the disengagement of attention from any location in the visual field. The time required for subjects to disengage their attention is approximately 100 ms. This disengaged state of attention — during which short latency (express) saccades can be made — can be sustained only for a gap duration of 300 ms. At longer gap durations mean SRTs increase again.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00406613
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  • 5
    Electronic Resource
    Electronic Resource
    ATR-FTIR spectroscopy as a tool for studies of polymer-polymer miscibility (1989)
    Springer
    Polymer bulletin 21 (1989), S. 63-68 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy is a useful technique for studies on specific interactions between polymers in miscible blends. The application of ATR-FTIR spectroscopy is demonstrated for blends of chlorine containing vinylpolymers of varying chlorine content with different polycarbonates. The miscibility is correlated to specific interactions between polar groups, leading to shifts of the infrared absorption bands.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00700270
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  • 6
    Electronic Resource
    Electronic Resource
    Free radical copolymerization of 1-vinyl naphthalene with styrene, methyl methacrylate, and acrylonitrile (1989)
    Springer
    Colloid & polymer science 267 (1989), S. 1096-1100 
    Details
    ISSN: 1435-1536
    Keywords: Freeradicalcopolymerization ; 1-vinyl-naphtalene ; styrene ; methylmetha-crylate ; acrylonitril ; relativereactivity ratios ; Q- ande-values
    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 Investigations on free radical copolymerization of 1-vinyl naphthalene (1-VNph, monomerM 2) with styrene (St), methyl methacrylate (MMA) and acrylonitrile (AN) (monomersm 1) in bulk at 60°C with AIBN as initiator are presented. Relative reactivity ratios were calculated by the Kelen-Tüdös method yielding:r st=0.70 ±0.23 andr 1−VNph=2.02 ±0.40 for system St/1-VNph;r MMA=0.32 ±0.10 andr 1−VNph=0.57 ±0.07 for system MMA/1-VNph andr AN=0.11 ±0.03 andr 1−VNph=0.45 ±0.09 for system AN/1-VNph.Q, e values for 1-VNph according to Alfrey, Price scheme were calculated toQ 1−VNph=1.02,e 1−VNph=−0.62.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01496929
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  • 7
    Electronic Resource
    Electronic Resource
    Radikalische Copolymerisation von p-Chlorstyrol und n-Butylmethacrylat (1986)
    Springer
    Colloid & polymer science 264 (1986), S. 494-497 
    Details
    ISSN: 1435-1536
    Keywords: Radikalische Massecopolymerisation ; Copolymerisationsparameter ; Fineman-Ross ; Kelen-Tüdös ; Run Number
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Abstract The radical copolymerization of p-chlorostyrene (1) with n-butylmethacrylate (2) was studied at low conversions in bulk at 60
    Notes: Zusammenfassung Die Copolymerisation von p-Chlorstyrol (1) mit n-Butylmethacrylat (2) wurde in Masse bei 60
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01422002
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  • 8
    Electronic Resource
    Electronic Resource
    Monocyte functional studies in asymptomatic, human immunodeficiency disease virus (HIV)-infected individuals (1988)
    Springer
    Journal of clinical immunology 8 (1988), S. 486-494 
    Details
    ISSN: 1573-2592
    Keywords: Monocytes ; human immunodeficiency disease virus (HIV) ; lymphokine-activated killer (LAK) cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Various aspects of monocyte-associated function were evaluated in the peripheral blood mononuclear cells of male homosexuals who were infected with the human immunodeficiency disease virus (HIV). The functional assessments included indomethacin-sensitive regulation of blastogenesis and lymphokine-activated killer (LAK)-cell induction, chemiluminescent responses of mononu-clear leukocytes to opsonized zymosan, and the expression of HLA-DR antigen on CD-14-positive monocytes. The results obtained demonstrate that each of these functions is abnormal in asymptomatic individuals who have HIV core antigen (p24) in their circulation. These results suggest that monocyte abnormalities which could contribute to immune dysfunction in HIV-infected patients can be detected early during the course of HIV infection and are associated with the expression of serum HIV antigen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00916955
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  • 9
    Electronic Resource
    Electronic Resource
    Alternierende copolymerisation mit lewissäuren. Copolymerisation von p-chlorstyrol und n-butylmethacrylat mit ethylaluminiumsesquichloridVortrag anläßlich der Tagung der Fachgruppe “Makromolekulare Chemie” der Gesellschaft Deutscher Chemiker über “Neue Polymere-Spezielle Eigenschaften-Moderne Technologien” in Bad Nauheim am 14. und 15. April 1986. (1986)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 145 (1986), S. 101-124 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: After a survey of the present knowledge of the alternating copolymerization with Lewis acids the copolymerization of p-chlorostyrene and n-butyl methacrylate with ethylaluminium sesquichloride in homogeneous toluene solution is investigated (copolymerization diagram, composition of the copolymers as a function of the conversion and of the polymerization temperature, dependence of the intrinsic viscosities on the polymerization time, conversion-time-diagram). The 1H NMR spectrum of a copolymer with approximately equimolar composition confirms the alternating structure and the possibility of a mixture of an equimolar copolymer and a homopolymer is ruled out.
    Notes: Nach einem Überblick über die alternierende Copolymerisation mit Lewissäuren wird die Copolymerisation von p-Chlorstyrol und n-Butylmethacrylat mit Ethylaluminiumsesquichlorid in Toluol untersucht (Copolymerisationsdiagramm, Zusammensetzung der Copolymeren als Funktion des Umsatzes und der Polymerisationstemperatur, Abhängigkeit der Grenzviskositäten von der Polymerisationszeit, Zeit-Umsatz-Diagramm). Das 1H-NMR-Spektrum eines annähernd äquimolaren Copolymeren bestätigt die alternierende Struktur und schließt die Möglichkeit einer Mischung aus äquimolaren Co- und Homopolymeren aus.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1986.051450106
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  • 10
    Electronic Resource
    Electronic Resource
    Methode zur Extraktion der niedermolekularen Anteile von PVC (1987)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 147 (1987), S. 49-61 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: A new method for the separation of low molecular PVC-parts from PVC is described. This method was developed by solvent extraction of the material at first with chloroform and finally with carbontetrachloride. The low molecular extracts were analysed both by gelpermeation chromatography and viscometric and spectrometric methods (IR and NMR). It was found that they are very low molecular and contain more structural defects than the total PVC. The thermal stability of these extracts is up to 8 times less than that of PVC. The removal of those low molecular parts from PVC involves a considerable lowering of the necessary amount of stabilizer for processing.
    Notes: Es wurde eine neue Methode zur Abtrennung der niedermolekularen Anteile aus PVC entwickelt. Sie beruht auf einer Löseextraktion mit Chloroform und anschließend mit Tetrachlorkohlenstoff. Die extrahierten niedermolekularen Anteile wurden viskosimetrisch, gelpermeationschromatographisch und spektroskopisch (IR und NMR) analysiert. Es wurde festgestellt, daß sie sehr niedermolekular sind und viel mehr strukturelle Defekte als das Gesamt-PVC enthalten. Die thermische Stabilität ist bis zu achtmal geringer als die von PVC. Die Entfernung dieser niedermolekularen Anteile aus PVC ermöglicht eine erhebliche Herabsetzung der notwendigen Stabilisatormenge.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1987.051470105
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