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  • 1
    Electronic Resource
    Electronic Resource
    Approximate mean continuous intecgral (1994)
    Springer
    Acta mathematica hungarica 64 (1994), S. 247-267 
    Details
    ISSN: 1588-2632
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01874253
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  • 2
    Electronic Resource
    Electronic Resource
    Flexible thermomechanical analysis of polymeric fibers (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 1947-1955 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new microcomputer-controlled instrument has been developed for making measurements of thermomechanical behavior of polymeric fibers and yarns under conditions relevant to high-speed industrial fiber processing. The instrument can apply extension and/or twist, and rapid heating or cooling in the temperature range 20–300 °C, while tension and torque are measured. Particular novel features are: a temperature control device providing heating or cooling at rates up to 103 K/s; a new form of high-sensitivity torque transducer with resolution of 10−9 Nm; and computer integration of extension, twist, and temperature. The instrument provides an unprecedented degree of flexibility in the design of thermomechanical tests. It is suitable not only as a versatile research tool for material property measurements relevant to processes such as spinning, heat setting, and thermobonding of fibers, but also as a convenient tester for use in quality control on fibers and yarns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143981
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  • 3
    Electronic Resource
    Electronic Resource
    Characterization of copper phthalocyanine Langmuir-Blodgett films (1990)
    Springer
    Journal of materials science 1 (1990), S. 110-114 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Asymetrically substituted copper phthalocyanine (as-CuPc) Langmuir-Blodgett (LB) films are prepared on metal-coated quartz substrates and the electronic behaviour of sandwich structures of metal/CuPc LB film/metal are studied under normal laboratory ambients. The results show that CuPc films are very stable and reproducible. D.c. measurements produce ohmicI(V) characteristics while the a.c. conductance shows a power-law dependence on the frequency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694918
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  • 4
    Electronic Resource
    Electronic Resource
    Experimental studies on substituted copper phthalocyanine Langmuir-Blodgett films (1992)
    Springer
    Journal of materials science 3 (1992), S. 139-143 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Using the Langmuir-Blodgett (LB) technique, novel copper bis(3-hydroxypropyloxy-hexaisopentyloxy)phthalocyanine molecules were deposited on quartz substrates. It is argued on the basis of pressure-area isotherms that films are deposited as monolayers. Optical absorption spectroscopy suggests that the deposited films were uniform. A.c. measurements were performed on LB films in a planar configuration at different temperatures. The power-law dependence of the conductivity on frequency is explained in terms of electronic conduction through hopping over a coulombic barrier 0.66 eV high. The Debye relaxation time is estimated to be of the order 811 µs at room temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695509
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  • 5
    Electronic Resource
    Electronic Resource
    Room temperature toluene sensing using phthalocyanine Langmuir-Blodgett films (1994)
    Springer
    Journal of materials science 5 (1994), S. 321-323 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Organic thin films, produced by the Langmuir-Blodgett (LB) technique were used to sense toluene gas at levels of 5–9 p.p.m.(parts per million). The interaction of the gas with the surface of the thin films led to significant changes in the electrical conductivity of the film. Since surface reaction is vital in these sensors, it is expected that films produced by the LB technique would provide the necessary surface uniformity to improve the performances of these devices. Most thin film sensors are operated at elevated temperatures to obtain higher efficiencies. A major problem associated with the use of LB films at elevated temperatures is the probability of disintegration and distortion of the layered structure. Thin films (thickness ≈ 100–120 nm) of specially substituted phthalocyanine molecules were investigated as possible sensors of toluene gas for room-temperature operation. The preliminary results indicated instantaneous response and recovery times, and the saturation value was reached within 2–3 s when the film was exposed to the gas at intervals of 2 min. The results thus offer potential for using such versatile organic materials as microsensors, even at room temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00215566
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  • 6
    Electronic Resource
    Electronic Resource
    Chromosome number and DNA content in callus culture ofCostus speciosus (Koen.) Sm. (1990)
    Springer
    Genetica 80 (1990), S. 109-114 
    Details
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Karyological changes in the callus tissue ofCostus speciosus (Koen.) Sm. at different ages have been analysed both by counting chromosome number and quantitating DNA content through cytophotometry. The cultures had been established from the tuber and maintained in modified Murashige and Skoog's basal medium (Physiol. Plant. 15: 473–497, 1962) supplemented with 2,4-D, NAA and BAP. Abnormality in chromosome behaviour leading to the formation of hypo- and hyperdiploid cells along with the diploid cells was observed. The abnormalities reached an optimum at different ages of the callus followed by a decline which varied amongst three populations. The frequency of hyperdiploid cells was higher than that of the hypodiploids. The role of endomitotic replication as well as non-disjunction of chromosomes resulting in the variation in chromosome number has been suggested. This was supported by the nuclear DNA value in successive passages. A difference in average amount of nuclear DNA with increase in age of the callus was recorded and the value also differed amongst these populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00127131
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  • 7
    Electronic Resource
    Electronic Resource
    The Cesàro-Denjoy-Bochner scale of almost periodicity (1991)
    Springer
    Analysis mathematica 17 (1991), S. 307-331 
    Details
    ISSN: 1588-273X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract После введения соотв етствующей метрики в классе всех функций, интегрируем ых по Чезаро—Данжуа—Бохн еру, определяется пон ятие почти периодичности для фу нкций этого класса. Доказано, что р яд Фурье любой функци иf, почти периодической по Чез аро—Данжуа—Бохнеру, в упомянутой метрике суммируем в смысле Бохнера—Фейера. Изуч ается также поточечная сум мируемость рядов Фур ье таких почти периодических функций.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01905936
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  • 8
    Electronic Resource
    Electronic Resource
    Generalised smooth functions. II (1990)
    Springer
    Acta mathematica hungarica 55 (1990), S. 47-56 
    Details
    ISSN: 1588-2632
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01951386
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  • 9
    Electronic Resource
    Electronic Resource
    Thermodynamics of processing synthetic fibers (1994)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 34 (1994), S. 371-376 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: This paper deals with a new approach to nonlinear and nonequilibrium thermodynamics. The new concept, developed by P. H. Lindenmeyer, states that in a heat-setting process, with the same average processing temperature, the addition of a sinusoidal fluctuation (approximately) can produce two opposite changes depending upon the frequency and amplitude of the temperature fluctuation. Preliminary experimental results obtained on nylon 6 monofilaments using a flexible thermomechanical analyzer have clearly shown that the physical properties (in this case torque-twist modulus) depend not only upon the average temperature but also upon its time rate of change.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760340419
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  • 10
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    Unknown
    Large-Solid-Angle Study of Pion Absorption onHe3 (1994)
    American Physical Society
    Details
    Publication Date: 1994-09-05
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society
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