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  • 11
    Electronic Resource
    Electronic Resource
    Growth and carotenoid production of Phaffia Rhodozyma in fed-batch cultures with different feeding methods (1999)
    Springer
    Biotechnology letters 21 (1999), S. 175-178 
    Details
    ISSN: 1573-6776
    Keywords: Phaffia rhodozyma ; carotenoid ; astaxanthin ; fed-batch culture ; fermentation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The growth and carotenoid production of Phaffia rhodozyma in fed-batch cultures with different feeding methods and grown at specific growth rates similar to the batch culture was compared. With constant feeding, exponential feeding, DO-stat and pH-stat fed-batch cultures of Phaffia rhodozyma, the highest biomass (17.4 g/l) and lowest carotenoid content (307 μg/g cell) of Phaffia rhodozyma was from the DO-stat fed-batch culture. The lowest biomass (14.7 g/l) and highest carotenoid content (412 μg/g cell) was from the exponential, fed-batch culture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005487709974
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  • 12
    Electronic Resource
    Electronic Resource
    A Contactless CCD Dilatometer for Foil Materials (1999)
    Springer
    International journal of thermophysics 20 (1999), S. 743-753 
    Details
    ISSN: 1572-9567
    Keywords: CCD ; contactless ; dilatometer ; foil ; thermal expansion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A contactless, compact, low-cost dilatometer based on a laser-pulse thermal-conductivity apparatus has been developed to measure the linear thermal expansion of foil materials. The two sample-edge images are projected onto the array of a charge-coupled device (CCD). Changes in sample length are determined from measurements of the corresponding displacements of the sample-edge images focused on the CCD. The dilalometer performance was tested by comparing results of measurements of the thermal expansion for pure copper with published data. The linear thermal expansion of an L-16-type foil of 20-μm thickness, which is a candidate material for thermocontrol layers (in engineering), was measured with the apparatus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022685927689
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  • 13
    Electronic Resource
    Electronic Resource
    Microstructural refinement in Al–Mg2Si in situ composites (1999)
    Springer
    Journal of materials science 18 (1999), S. 783-784 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006684916145
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  • 14
    Electronic Resource
    Electronic Resource
    Effects of two oil dispersants on phototaxis and swimming behaviour of barnacle larvae (1997)
    Springer
    Hydrobiologia 352 (1997), S. 9-16 
    Details
    ISSN: 1573-5117
    Keywords: Oil dispersant ; phototaxis ; swimming behaviour ; barnacle larvae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effects of two oil dispersants (Vecom B-1425 GL and Norchem OSD-570) mixed with diesel oil on the survival and behaviour of the stage II nauplii of the barnacle Balanus amphitrite were investigated. The24 and 48-hour LC50 values for Vecom B-1425 GL:diesel mixture were 514 and 48 mg l−1 respectively, while respective values for Norchem OSD-570:diesel mixture were 505 and 71 mg l−1. Under sublethal concentrations, increased levels of the dispersant:diesel mixtures caused a reduction in phototactic responses. Balanus amphitrite nauplii failed to exhibit phototactic responses when exposed to Vecom B-1425GL:diesel mixtures of 400 mg l−1 and higher for 24 hours. A longer exposure time of 48 hours further reduced the Lowest Observable Effect Concentrations (LOECs) to 60 mg l−1. The LOECs for Norchem OSD-570:diesel mixtures under exposure periods of 24 and 48 hours were 400and 80 mgl−1 respectively. The curvilinear velocities (VCL) and straight-line velocities (VSL) of the stage II nauplii ranged from 0.7–1.1and 0.2-0.4 mms−1 respectively. Increased concentrations of dispersant:diesel mixtures caused a significant change in the curvilinear and straight-line velocities. Both oil dispersants, dispersant:diesel mixtures of 20 to 40 mgl−1 caused significant increases in VCL, but no significant change in VSL. Dispersant:diesel mixtures of 100 mg l−1 and higher resulted in a reduction in VSL for both dispersants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003024500609
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  • 15
    Electronic Resource
    Electronic Resource
    Decomposition of Cyclohexyl-t-butyl-Dimethylammonium Tetraphenylborate: Synthesis and kinetics (1999)
    Springer
    Journal of thermal analysis and calorimetry 58 (1999), S. 487-493 
    Details
    ISSN: 1572-8943
    Keywords: non-isothermal kinetics ; quaternary ammonium ; tetraphenylborate ; thermal decomposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A new compound cyclohexyl-t-butyldimethylammonium tetraphenylborate, [C6H11N(CH3)2(C(CH3)3)]BPh4 has been prepared, and its decomposition mechanism was studied by TG. The IR spectra of the products of thermal decomposition were examined at every stage. Kinetic analysis for the first stage of thermal decomposition process was obtained by TG and DTG curves, and kinetic parameters were obtained from the analysis of the TG-DTG curves with integral and differential equations. The most probable kinetic function was suggested by comparison of kinetic parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010184028318
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  • 16
    Electronic Resource
    Electronic Resource
    Constitutive Behavior of Epon 828/T-403 at Various Strain Rates (1998)
    Springer
    Mechanics of time-dependent materials 2 (1998), S. 103-111 
    Details
    ISSN: 1573-2738
    Keywords: dynamic response ; Epon 828 ; T-403 ; epoxy ; high-strain rate test ; Hopkinson bar ; material modeling ; strain-rate effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The uniaxial compressive mechanical response of an epoxy, Epon 828/T-403, was experimentally, measured over a strain-rate range of 1.1 × 10-4 to 5.2 × 103 s-1. A modified split Hopkinson pressure bar was employed to apply dynamic compressive loading over a very short time of ∼ 0.2 millisecond, whereas an MTS was used to conduct quasi-static experiments at a duration of 0.2 to 2,000 seconds to determine strain-rate sensitivity. The experimental results show that the compressive strength of the epoxy increases with increasing strain rate until adiabatic heating offsets the strain-rate hardening. A constitutive model based on the Johnson–Cook model was constructed to describe the stress-strain behavior of the epoxy at the strain rates tested. A Ludwig equation was modified to model the stress-strain behavior at a reference strain rate, which included elastic deformation, a yield-like peak, and a strain-softening region. A hyperbolic tangent function provided a good description of the strain-rate effect. The material constants in this proposed model were determined using the experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009866108965
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  • 17
    Electronic Resource
    Electronic Resource
    On the loss factor of wood during radio frequency heating (1999)
    Springer
    Wood science and technology 33 (1999), S. 299-310 
    Details
    ISSN: 0043-7719
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  The radial direction loss factor of full-size western hemlock sapwood and heartwood, as well as western red cedar heartwood timbers was measured using the direct calorimetric method with a laboratory-scale radio frequency/vacuum dryer at the frequency of 13.56 MHz, moisture content range between 10 and 80%, temperature range between 25 and 55 °C, and root mean square (rms) electrode voltages of 0.8 and 1.1 kV, respectively. The results indicated that the moisture content, temperature, electric field strength and wood type significantly affected the loss factor. Empirical regression equations were derived based on the experimental data that made possible the calculation of the loss factor and power density within wood during RF heating.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002260050117
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  • 18
    Electronic Resource
    Electronic Resource
    Reformed bamboo/glass fabric/aluminium composite as an ecomaterial (1998)
    Springer
    Journal of materials science 33 (1998), S. 2147-2152 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A super-hybrid (natural composite/fibre-reinforced composite/metal hybridization) ecomaterial, reformed bamboo/glass fabric/aluminium (RB/GF/Al) was developed. The addition of a sparse glass fabric/epoxy resin layer between reformed bamboo and aluminium proved to be effective in increasing the compressive, tensile strength of the composite material. In particular, the interfacial shear strength between the reformed bamboo and aluminium was improved, and was the transverse tensile strength. These were the major shortcomings of normal bamboo and reformed bamboo/aluminium composites. The good recyclability of reformed bamboo and aluminium make RB/GF/Al an environmentally friendly material. Extensive use of such an ecomaterial instead of wood would save natural forest resources. © 1998 Chapman & Hall
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004379405331
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  • 19
    Electronic Resource
    Electronic Resource
    Effects of fibre orientation on the vibration damping characteristics of virall laminates (1995)
    Springer
    Journal of materials science 14 (1995), S. 1218-1219 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: 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/BF00291811
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  • 20
    Electronic Resource
    Electronic Resource
    Reformed bamboo and reformed bamboo/aluminium composite Part II impact properties (1996)
    Springer
    Journal of materials science 15 (1996), S. 129-131 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: 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/BF00291445
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