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  • 1
    Electronic Resource
    Electronic Resource
    Chemical Characterisation and Legal Classification of Sludges from Road Sweepings (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 14 (2000), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: The current legislation on the disposal of road sweeping sludges is anomalous because certain road sweeping sludges are exempt from the requirements of the Special Waste Regulations 1996 – not because of their chemical composition but rather as a result of the legal definitions applied by the Controlled Waste Regulations 1992. This has led to sweepings from trunk roads (under the control of the Secretary of State) being classified as ‘special’waste, but sweepings from roads vested in the local authorities classified as ‘household’waste. Although the chemical composition and potential health hazards associated with road dust have been studied, data on the chemical composition of road sweeping sludges are sparse. This study analyses twenty-four samples of road sweepings in order to chemically characterise the sludge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.2000.tb00234.x
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  • 2
    Electronic Resource
    Electronic Resource
    Electrical and thermal properties of a varistor at cryogenic temperatures (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 4223-4228 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A ZnO-based varistor composition has been found whose I-V characteristic is essentially unaffected by temperature (4.2–300 K) or intense magnetic fields at 4.2 K (up to 10 T). Electrical measurements are reported at various temperatures for current densities in the range 10−11–10−3 A/cm2 . Specific-heat and thermal conductivity data are reported at 1.7–300 K. The specific heat below 10 K and above 100 K is dominated by defect modes, and the data can be understood based on simple defect models. The thermal conductivity displays a broad maximum at about 80 K (0.65 W cm−1 K−1 ), and it is concluded that the defect modes do not carry heat. The small temperature dependence of the prebreakdown conductivity is found to be in excellent agreement with a variable-range-hopping model, suggesting that this composition is just above the percolation threshold.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341288
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  • 3
    Electronic Resource
    Electronic Resource
    Dielectric composites incorporating enthalpy stabilization for NbTi windings (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 2729-2735 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Composites of ceramic powders in epoxies appropriate for both insulating and impregnating NbTi windings are studied. Specific heat, thermal conductivity, thermal contraction, and magnetocaloric measurements on composites are presented. Thermal contractions well matched to copper are found, and thermal shock resistance is greatly enhanced. Enthalpies, 4.2–6 K, range up to 80 mJ cm−3 and are 20–50 times larger than that of the pure epoxies. The thermal group parameter, η=(κρC)1/2, is 2 1/2 –4 times larger than that for epoxy (data are given for magnetic field strengths up to 8 T). An interesting magnetocaloric stabilization mechanism is found: on up-ramp, a magnetocaloric enthalpy ≤7.6 mJ cm−3 is available for stabilization via adiabatic-magnetization cooling. Results are not specific to the epoxies used but apply to composites with any amorphous matrices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341615
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  • 4
    Electronic Resource
    Electronic Resource
    Continuous Production of Acrylonitrile-Starch Graft Copolymers by Ceric Ion Catalysis (1973)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 12 (1973), S. 62-67 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/i260045a012
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  • 5
    Electronic Resource
    Electronic Resource
    Calibration scheme for Allen–Bradley resistors, 4.2–100 K (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 2505-2507 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Based on measured R–T data for ten tempered Allen–Bradley resistors (BB, (1)/(8) W, 1 kΩ), a four-point-calibration scheme is described that yields ΔT/T≤0.5% (≤0.8%, 55–65 K) in the range 4.2–100 K. The procedure involves three successive approximations to the equation log R=A+BT−P.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139890
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  • 6
    Electronic Resource
    Electronic Resource
    Quantum-ferroelectric pressure sensor for use at low temperatures (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 1913-1916 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A small, multilayer capacitance sensor (∼70 mm3) for measuring pressure over a broad range at low temperatures is described. The dielectric material is a quantum ferroelectric in the (Cd, Pb)2(Nb, Ta)2 O7 ceramic system, and the reciprocal capacitance varies linearly with pressure into the kilobar region. The average sensitivity of the devices studied is 151 pF/kbar, and the sensor is essentially independent of both intense magnetic fields and temperature below 10 K. A calibration for the slight magnetic field effect is given, and the sensor is dielectrically stable at helium temperatures. A one-point pressure calibration is estimated to be reliable to 〈±0.1%, and pressure changes in the millibar range can be resolved if certain precautions are taken.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138444
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  • 7
    Electronic Resource
    Electronic Resource
    Low-temperature dielectric properties of SrTiO3 glass-ceramics (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 2069-2080 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The low-temperature dielectric properties of strontium titanate aluminosilicate glass-ceramics, in which perovskite SrTiO3 is the primary crystalline phase, have been investigated. These glass-ceramics exhibited dielectric constant peaks at temperatures below 100 K; the magnitude of these peaks, along with their frequency and temperature dependencies, were strongly dependent on the crystallization conditions. In heavily crystallized glass-ceramics, two low-temperature, relaxation-type loss mechanisms were identified, at temperature ranges near 50 and 100 K. The magnitude of the dielectric loss peak increased with increasing frequency for the lower temperature (50 K) mechanism and the magnitude of the loss peak decreased with increasing frequency for the higher temperature (100 K) mechanism. Arrhenius activation energies were calculated to be 0.054 and 0.17 eV for the lower and higher temperature loss mechanisms, respectively. The higher temperature loss mechanism was further analyzed by the Cole–Cole method, and a relaxation strength of 41 was calculated. It was proposed that the dielectric constant and loss peaks were related to ferroic phenomena occurring in the SrTiO3 phase, caused by interactions of the SrTiO3 with the glass-ceramic matrix.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337211
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  • 8
    Electronic Resource
    Electronic Resource
    Hydraulic Characteristics of Wet-Pulverised Municipal Waste (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 15 (2001), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Landfill technology must adapt to the changing demands of policy makers and waste regulators if it is to continue to deliver environmentally sound and efficient waste disposal. Among the more significant requirements that may fall to landfill designers is for the pretreatment of municipal solid waste and that the fill will rapidly stabilise. This paper reports on the key relationship between in-situ density and the hydraulic characteristics of pretreated municipal solid waste. The paper also considers the practical significance of the research in relation to current UK landfill practice, and examines the viability of the flushing bioreactor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.2001.tb00298.x
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  • 9
    Electronic Resource
    Electronic Resource
    Kontinuierliche Herstellung von Pfropfcopolymeren aus Acrylnitril und Stärke durch Ceriionen-Katalyse (1974)
    Springer
    Colloid & polymer science 252 (1974), S. 628-628 
    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/BF01558189
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  • 10
    Electronic Resource
    Electronic Resource
    The dielectric constant of H2, D2, and HD in the condensed phases (1975)
    Springer
    Journal of low temperature physics 21 (1975), S. 599-617 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Measurements have been made of the dielectric constant in the liquid and solid phases of H2, D2, and HD. Precise measurements were made in the liquid phase at saturated vapor pressure and compared with previous data. A study was made of the change in the dielectric constant upon solidification. Measurements were made in the solid phases of H2 and HD from the solidifition point to about 0.02 K. Both solids exhibited temperature-dependent dielectric constants which were rather similar. The magnitude of the temperature dependence was found to be related to the concentration of molecules in the rotationalJ=1 state. The dielectric constant of HD was found to change quite dramatically between 1 and 2 K, while H2 and D2 show no similar change.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01141613
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